Mercurial > hg > xemacs-beta
annotate src/redisplay.c @ 5047:07dcc7000bbf
put width before height consistently, fix a real bug found in the process
-------------------- ChangeLog entries follow: --------------------
src/ChangeLog addition:
2010-02-20 Ben Wing <ben@xemacs.org>
* EmacsFrame.c (EmacsFrameRecomputeCellSize):
* faces.c (default_face_font_info):
* faces.c (default_face_width_and_height):
* faces.c (Fface_list):
* faces.h:
* frame-gtk.c (gtk_set_initial_frame_size):
* frame-gtk.c (gtk_set_frame_size):
* frame-gtk.c (gtk_recompute_cell_sizes):
* frame.c:
* frame.c (frame_conversion_internal_1):
* frame.c (change_frame_size_1):
* frame.c (change_frame_size):
* glyphs-msw.c (mswindows_combo_box_instantiate):
* glyphs-widget.c (widget_instantiate):
* glyphs-widget.c (tree_view_query_geometry):
* glyphs-widget.c (Fwidget_logical_to_character_width):
* glyphs-widget.c (Fwidget_logical_to_character_height):
* indent.c (vmotion_pixels):
* redisplay-output.c (get_cursor_size_and_location):
* redisplay-xlike-inc.c (XLIKE_output_eol_cursor):
* redisplay-xlike-inc.c (XLIKE_flash):
* redisplay.c (calculate_baseline):
* redisplay.c (start_with_point_on_display_line):
* redisplay.c (glyph_to_pixel_translation):
* redisplay.c (pixel_to_glyph_translation):
* window.c (margin_width_internal):
* window.c (frame_size_valid_p):
* window.c (frame_pixsize_valid_p):
* window.c (check_frame_size):
* window.c (set_window_pixsize):
* window.c (window_pixel_height_to_char_height):
* window.c (window_char_height_to_pixel_height):
* window.c (window_displayed_height):
* window.c (window_pixel_width_to_char_width):
* window.c (window_char_width_to_pixel_width):
* window.c (change_window_height):
* window.c (window_scroll):
* window.h:
IMPORTANT: Aidan and Carbon Repo, please pay attention and fix
appropriately!
Rename: default_face_height_and_width -> default_face_width_and_height
and reverse width/height arguments.
Reverse width/height arguments to the following functions:
-- default_face_font_info
-- default_face_height_and_width (see above)
-- check_frame_size
-- frame_size_valid_p (made into a static function)
Fix a redisplay bug where args to default_face_height_and_width
were in the wrong order.
| author | Ben Wing <ben@xemacs.org> |
|---|---|
| date | Sat, 20 Feb 2010 18:56:01 -0600 |
| parents | d0c14ea98592 |
| children | 548f1f47eb82 |
| rev | line source |
|---|---|
| 428 | 1 /* Display generation from window structure and buffer text. |
| 2 Copyright (C) 1994, 1995, 1996 Board of Trustees, University of Illinois. | |
| 3 Copyright (C) 1995 Free Software Foundation, Inc. | |
|
4928
ea701c23ed84
change text_width method to take a window, in preparation for unicode-internal changes
Ben Wing <ben@xemacs.org>
parents:
4844
diff
changeset
|
4 Copyright (C) 1995, 1996, 2000, 2001, 2002, 2003, 2005, 2010 Ben Wing. |
| 428 | 5 Copyright (C) 1995 Sun Microsystems, Inc. |
| 6 Copyright (C) 1996 Chuck Thompson. | |
| 7 | |
| 8 This file is part of XEmacs. | |
| 9 | |
| 10 XEmacs is free software; you can redistribute it and/or modify it | |
| 11 under the terms of the GNU General Public License as published by the | |
| 12 Free Software Foundation; either version 2, or (at your option) any | |
| 13 later version. | |
| 14 | |
| 15 XEmacs is distributed in the hope that it will be useful, but WITHOUT | |
| 16 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 17 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 18 for more details. | |
| 19 | |
| 20 You should have received a copy of the GNU General Public License | |
| 21 along with XEmacs; see the file COPYING. If not, write to | |
| 22 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
| 23 Boston, MA 02111-1307, USA. */ | |
| 24 | |
| 25 /* Synched up with: Not in FSF. */ | |
| 26 | |
| 27 /* Author: Chuck Thompson */ | |
| 28 | |
| 29 /* Fixed up by Ben Wing for Mule */ | |
| 30 | |
| 31 /* This file has been Mule-ized. */ | |
| 32 | |
| 33 /***************************************************************************** | |
| 34 The Golden Rules of Redisplay | |
| 35 | |
| 853 | 36 First: It Is Better To Be Correct Than Fast |
| 37 Second: Thou Shalt Use Due Caution When Running Elisp From Within Redisplay | |
| 38 Third: It Is Better To Be Fast Than Not To Be | |
| 428 | 39 ****************************************************************************/ |
| 40 | |
| 1318 | 41 /* Note: The second rule used to prohibit running Elisp from within |
| 42 redisplay, but that's not correct any more -- use | |
| 43 call*_trapping_problems() or call_with_suspended_errors() instead. | |
| 853 | 44 |
| 45 --ben | |
| 46 */ | |
| 47 | |
| 428 | 48 #include <config.h> |
| 49 #include "lisp.h" | |
| 50 | |
| 51 #include "buffer.h" | |
| 52 #include "commands.h" | |
| 53 #include "debug.h" | |
| 872 | 54 #include "device-impl.h" |
| 428 | 55 #include "elhash.h" |
| 853 | 56 #include "events.h" |
| 872 | 57 #include "extents-impl.h" |
| 428 | 58 #include "faces.h" |
| 872 | 59 #include "frame-impl.h" |
| 428 | 60 #include "glyphs.h" |
| 61 #include "gutter.h" | |
| 62 #include "insdel.h" | |
| 63 #include "menubar.h" | |
| 872 | 64 #include "objects-impl.h" |
| 1318 | 65 #include "opaque.h" |
| 428 | 66 #include "process.h" |
| 1292 | 67 #include "profile.h" |
| 428 | 68 #include "redisplay.h" |
| 69 #include "toolbar.h" | |
| 872 | 70 #include "window-impl.h" |
| 428 | 71 #include "line-number.h" |
| 72 #include "file-coding.h" | |
| 73 | |
| 442 | 74 #include "sysfile.h" |
| 75 | |
| 428 | 76 #ifdef HAVE_TTY |
| 77 #include "console-tty.h" | |
| 78 #endif /* HAVE_TTY */ | |
| 79 | |
| 80 /* Note: We have to be careful throughout this code to properly handle | |
| 867 | 81 and differentiate between Ibytes and Ichars. |
| 82 | |
| 83 Since strings are generally composed of Ibytes, I've taken the tack | |
| 84 that any contiguous set of Ibytes is called a "string", while | |
| 85 any contiguous set of Ichars is called an "array". */ | |
| 428 | 86 |
| 87 /* Return value to indicate a failure by an add_*_rune routine to add | |
| 88 a rune, but no propagation information needs to be returned. */ | |
| 89 #define ADD_FAILED (prop_block_dynarr *) 1 | |
| 90 | |
| 91 #define BEGIN_GLYPHS 0 | |
| 92 #define END_GLYPHS 1 | |
| 93 #define LEFT_GLYPHS 2 | |
| 94 #define RIGHT_GLYPHS 3 | |
| 95 | |
| 96 #define VERTICAL_CLIP(w, display) \ | |
| 442 | 97 ((WINDOW_TTY_P (w) | (!display && scroll_on_clipped_lines)) \ |
| 428 | 98 ? INT_MAX \ |
| 442 | 99 : vertical_clip) |
| 428 | 100 |
| 101 /* The following structures are completely private to redisplay.c so | |
| 102 we put them here instead of in a header file, for modularity. */ | |
| 103 | |
| 826 | 104 /* NOTE: Bytexpos's not Charxpos's in this structure. */ |
| 428 | 105 |
| 106 typedef struct position_redisplay_data_type | |
| 107 { | |
| 108 /* This information is normally filled in by the create_*_block | |
| 109 routines and is used by the add_*_rune routines. */ | |
| 110 Lisp_Object window; | |
| 111 /* if we are working with strings rather than buffers we need a | |
| 112 handle to the string */ | |
| 113 Lisp_Object string; | |
| 114 struct device *d; | |
| 115 struct display_block *db; | |
| 116 struct display_line *dl; | |
| 867 | 117 Ichar ch; /* Character that is to be added. This is |
| 428 | 118 used to communicate this information to |
| 867 | 119 add_ichar_rune(). */ |
| 428 | 120 Lisp_Object last_charset; /* The charset of the previous character. |
| 121 Used to optimize some lookups -- we | |
| 122 only have to do some things when | |
| 123 the charset changes. */ | |
| 124 face_index last_findex; /* The face index of the previous character. | |
| 125 Needed to ensure the validity of the | |
| 126 last_charset optimization. */ | |
| 127 | |
| 128 int last_char_width; /* The width of the previous character. */ | |
| 129 int font_is_bogus; /* If true, it means we couldn't instantiate | |
| 130 the font for this charset, so we substitute | |
| 131 ~'s from the ASCII charset. */ | |
| 826 | 132 Bytexpos byte_charpos; /* Position of character we are processing. This |
| 133 is a Bytexpos, meaning it refers to bytes (not | |
| 134 chars) and can refer to either buffers (1-based) | |
| 135 or strings (0-based). We need to be careful | |
| 136 when doing anything that references the text in | |
| 137 the buffer or string. */ | |
| 138 Bytexpos byte_endpos; /* ????? Unknown, under-used. */ | |
| 428 | 139 int pixpos; |
| 140 int max_pixpos; | |
| 141 int blank_width; /* Width of the blank that is to be added. | |
| 142 This is used to communicate this information | |
| 143 to add_blank_rune(). | |
| 144 | |
| 145 This is also used rather cheesily to | |
| 146 communicate the width of the eol-cursor-size | |
| 147 blank that exists at the end of the line. | |
| 867 | 148 add_ichar_rune() is called cheesily with |
| 428 | 149 the non-printing char '\n', which is stuck |
| 150 in the output routines with its width being | |
| 151 BLANK_WIDTH. */ | |
| 826 | 152 Bytexpos byte_cursor_charpos; /* This stores the buffer position of the |
| 153 cursor. */ | |
| 428 | 154 unsigned int cursor_type :3; |
| 155 int cursor_x; /* rune block cursor is at */ | |
| 156 int start_col; /* Number of character columns (each column has | |
| 157 a width of the default char width) that still | |
| 158 need to be skipped. This is used for horizontal | |
| 159 scrolling, where a certain number of columns | |
| 160 (those off the left side of the screen) need | |
| 161 to be skipped before anything is displayed. */ | |
| 826 | 162 Bytexpos byte_start_col_enabled; |
| 428 | 163 int start_col_xoffset; /* Number of pixels that still need to |
| 4187 | 164 be skipped. This is used for |
| 165 horizontal scrolling of glyphs, where we want | |
| 166 to be able to scroll over part of the glyph. */ | |
| 428 | 167 |
| 168 int hscroll_glyph_width_adjust; /* how much the width of the hscroll | |
| 169 glyph differs from space_width (w). | |
| 170 0 if no hscroll glyph was used, | |
| 171 i.e. the window is not scrolled | |
| 172 horizontally. Used in tab | |
| 173 calculations. */ | |
| 174 | |
| 175 /* Information about the face the text should be displayed in and | |
| 176 any begin-glyphs and end-glyphs. */ | |
| 177 struct extent_fragment *ef; | |
| 178 face_index findex; | |
| 179 | |
| 819 | 180 /* The height of a pixmap may either be predetermined if the user has set a |
| 181 baseline value, or it may be dependent on whatever the line ascent and | |
| 182 descent values end up being, based just on font and pixmap-ascent | |
| 183 information. In the first case we can immediately update the values, thus | |
| 184 their inclusion here. In the last case we cannot determine the actual | |
| 185 contribution to the line height until we have finished laying out all text | |
| 186 on the line. Thus we propagate the max height of such pixmaps and do a | |
| 187 final calculation (in calculate_baseline()) after all text has been added | |
| 188 to the line. */ | |
| 428 | 189 int new_ascent; |
| 190 int new_descent; | |
| 191 int max_pixmap_height; | |
| 819 | 192 int need_baseline_computation; |
| 193 int end_glyph_width; /* Well, it is the kitchen sink after all ... */ | |
| 428 | 194 |
| 195 Lisp_Object result_str; /* String where we put the result of | |
| 196 generating a formatted string in the modeline. */ | |
| 197 int is_modeline; /* Non-zero if we're generating the modeline. */ | |
| 198 Charcount modeline_charpos; /* Number of chars used in result_str so far; | |
| 199 corresponds to bytepos. */ | |
| 200 Bytecount bytepos; /* Number of bytes used in result_str so far. | |
| 4187 | 201 We don't actually copy the bytes into result_str |
| 428 | 202 until the end because we don't know how big the |
| 203 string is going to be until then. */ | |
| 204 } pos_data; | |
| 205 | |
| 206 enum prop_type | |
| 207 { | |
| 208 PROP_STRING, | |
| 209 PROP_CHAR, | |
| 210 PROP_MINIBUF_PROMPT, | |
| 819 | 211 PROP_BLANK, |
| 212 PROP_GLYPH | |
| 428 | 213 }; |
| 214 | |
| 215 /* Data that should be propagated to the next line. Either a single | |
| 867 | 216 Ichar, a string of Ibyte's or a glyph. |
| 428 | 217 |
| 218 The actual data that is propagated ends up as a Dynarr of these | |
| 219 blocks. | |
| 220 | |
| 819 | 221 prop_blocks are used to indicate that data that was supposed to go |
| 222 on the previous line couldn't actually be displayed. Generally this | |
| 223 shouldn't happen if we are clipping the end of lines. If we are | |
| 224 wrapping then we need to display the propagation data before moving | |
| 225 on. Its questionable whether we should wrap or clip glyphs in this | |
| 226 instance. Most e-lisp relies on clipping so we preserve this | |
| 227 behavior. | |
| 228 | |
| 867 | 229 #### It's unclean that both Ichars and Ibytes are here. |
| 428 | 230 */ |
| 231 | |
| 232 typedef struct prop_block prop_block; | |
| 233 struct prop_block | |
| 234 { | |
| 235 enum prop_type type; | |
| 236 | |
| 237 union data | |
| 238 { | |
| 239 struct | |
| 240 { | |
| 867 | 241 Ibyte *str; |
| 428 | 242 Bytecount len; /* length of the string. */ |
| 243 } p_string; | |
| 244 | |
| 245 struct | |
| 246 { | |
| 867 | 247 Ichar ch; |
| 826 | 248 Bytebpos byte_cursor_charpos; /* NOTE: is in Bytebpos's */ |
| 428 | 249 unsigned int cursor_type :3; |
| 250 } p_char; | |
| 251 | |
| 252 struct | |
| 253 { | |
| 254 int width; | |
| 255 face_index findex; | |
| 256 } p_blank; | |
| 819 | 257 |
| 258 struct | |
| 259 { | |
| 260 /* Not used as yet, but could be used to wrap rather than clip glyphs. */ | |
| 4187 | 261 int width; |
| 819 | 262 Lisp_Object glyph; |
| 263 } p_glyph; | |
| 264 | |
| 428 | 265 } data; |
| 266 }; | |
| 267 | |
| 268 typedef struct | |
| 269 { | |
| 270 Dynarr_declare (prop_block); | |
| 271 } prop_block_dynarr; | |
| 272 | |
| 273 | |
| 274 static Charcount generate_fstring_runes (struct window *w, pos_data *data, | |
| 275 Charcount pos, Charcount min_pos, | |
| 276 Charcount max_pos, Lisp_Object elt, | |
| 277 int depth, int max_pixsize, | |
| 438 | 278 face_index findex, int type, |
| 279 Charcount *offset, | |
| 280 Lisp_Object cur_ext); | |
| 428 | 281 static prop_block_dynarr *add_glyph_rune (pos_data *data, |
| 282 struct glyph_block *gb, | |
| 283 int pos_type, int allow_cursor, | |
| 284 struct glyph_cachel *cachel); | |
| 665 | 285 static Bytebpos create_text_block (struct window *w, struct display_line *dl, |
| 826 | 286 Bytebpos byte_start_pos, |
| 287 prop_block_dynarr **prop, | |
| 288 int type); | |
| 428 | 289 static int create_overlay_glyph_block (struct window *w, |
| 290 struct display_line *dl); | |
| 291 static void create_left_glyph_block (struct window *w, | |
| 292 struct display_line *dl, | |
| 293 int overlay_width); | |
| 294 static void create_right_glyph_block (struct window *w, | |
| 295 struct display_line *dl); | |
| 296 static void redisplay_windows (Lisp_Object window, int skip_selected); | |
| 867 | 297 static void decode_mode_spec (struct window *w, Ichar spec, int type); |
| 428 | 298 static void free_display_line (struct display_line *dl); |
| 826 | 299 static void update_line_start_cache (struct window *w, Charbpos from, |
| 300 Charbpos to, Charbpos point, | |
| 301 int no_regen); | |
| 665 | 302 static int point_visible (struct window *w, Charbpos point, int type); |
| 819 | 303 static void calculate_yoffset (struct display_line *dl, |
| 4187 | 304 struct display_block *fixup); |
| 819 | 305 static void calculate_baseline (pos_data *data); |
| 428 | 306 |
| 1204 | 307 #ifdef ERROR_CHECK_DISPLAY |
| 800 | 308 static void sledgehammer_check_redisplay_structs (void); |
| 1204 | 309 #endif /* ERROR_CHECK_DISPLAY */ |
| 800 | 310 |
| 428 | 311 /* This used to be 10 but 30 seems to give much better performance. */ |
| 312 #define INIT_MAX_PREEMPTS 30 | |
| 1268 | 313 static Fixnum max_preempts; |
| 314 | |
| 315 #define QUEUED_EVENTS_REQUIRED_FOR_PREEMPTION 4 | |
| 428 | 316 |
| 1318 | 317 /* Note that doing this can call Lisp. */ |
| 428 | 318 #define REDISPLAY_PREEMPTION_CHECK \ |
| 319 ((void) \ | |
| 320 (preempted = \ | |
| 321 (!disable_preemption && \ | |
| 322 ((preemption_count < max_preempts) || !NILP (Vexecuting_macro)) && \ | |
| 4187 | 323 (!INTERACTIVE || \ |
| 1268 | 324 detect_input_pending (QUEUED_EVENTS_REQUIRED_FOR_PREEMPTION))))) |
| 428 | 325 |
| 326 /* | |
| 327 * Redisplay global variables. | |
| 328 */ | |
| 329 | |
| 330 /* We need a third set of display structures for the cursor motion | |
| 331 routines. We used to just give each window a third set. However, | |
| 332 we always fully regenerate the structures when needed so there | |
| 333 isn't any reason we need more than a single set. */ | |
| 334 display_line_dynarr *cmotion_display_lines; | |
| 335 | |
| 336 /* We store the extents that we need to generate in a Dynarr and then | |
| 337 frob them all on at the end of generating the string. We do it | |
| 338 this way rather than adding them as we generate the string because | |
| 339 we don't store the text into the resulting string until we're done | |
| 340 (to avoid having to resize the string multiple times), and we don't | |
| 341 want to go around adding extents to a string when the extents might | |
| 342 stretch off the end of the string. */ | |
| 343 static EXTENT_dynarr *formatted_string_extent_dynarr; | |
| 344 static Bytecount_dynarr *formatted_string_extent_start_dynarr; | |
| 345 static Bytecount_dynarr *formatted_string_extent_end_dynarr; | |
| 346 | |
| 347 | |
| 348 /* #### probably temporary */ | |
| 458 | 349 Fixnum cache_adjustment; |
| 428 | 350 |
| 351 /* This holds a string representing the text corresponding to a single | |
| 352 modeline % spec. */ | |
| 867 | 353 static Ibyte_dynarr *mode_spec_ibyte_string; |
| 428 | 354 |
| 355 int in_display; /* 1 if in redisplay. */ | |
| 356 | |
| 1318 | 357 /* Whether we should delay size changes. Broken out of |
| 358 enter_redisplay_critical_section(). */ | |
| 359 int hold_frame_size_changes; | |
| 360 | |
| 428 | 361 int disable_preemption; /* Used for debugging redisplay and for |
| 362 force-redisplay. */ | |
| 363 | |
| 364 /* We only allow max_preempts preemptions before we force a redisplay. */ | |
| 365 static int preemption_count; | |
| 366 | |
| 367 /* Minimum pixel height of clipped bottom display line. */ | |
| 458 | 368 Fixnum vertical_clip; |
| 428 | 369 |
| 370 /* Minimum visible pixel width of clipped glyphs at right margin. */ | |
| 458 | 371 Fixnum horizontal_clip; |
| 428 | 372 |
| 373 /* Nonzero means reading single-character input with prompt | |
| 374 so put cursor on minibuffer after the prompt. */ | |
| 375 int cursor_in_echo_area; | |
| 376 Lisp_Object Qcursor_in_echo_area; | |
| 377 | |
| 378 /* Nonzero means truncate lines in all windows less wide than the frame */ | |
| 379 int truncate_partial_width_windows; | |
| 380 | |
| 381 /* non-nil if a buffer has changed since the last time redisplay completed */ | |
| 382 int buffers_changed; | |
| 383 int buffers_changed_set; | |
| 384 | |
| 385 /* non-nil if hscroll has changed somewhere or a buffer has been | |
| 386 narrowed or widened */ | |
| 387 int clip_changed; | |
| 388 int clip_changed_set; | |
| 389 | |
| 390 /* non-nil if any extent has changed since the last time redisplay completed */ | |
| 391 int extents_changed; | |
| 392 int extents_changed_set; | |
| 393 | |
| 394 /* non-nil if any face has changed since the last time redisplay completed */ | |
| 395 int faces_changed; | |
| 396 | |
| 397 /* Nonzero means some frames have been marked as garbaged */ | |
| 398 int frame_changed; | |
| 399 | |
| 400 /* non-zero if any of the builtin display glyphs (continuation, | |
| 401 hscroll, control-arrow, etc) is in need of updating | |
| 402 somewhere. */ | |
| 403 int glyphs_changed; | |
| 404 int glyphs_changed_set; | |
| 405 | |
| 442 | 406 /* non-zero if any subwindow has been deleted. */ |
| 428 | 407 int subwindows_changed; |
| 408 int subwindows_changed_set; | |
| 409 | |
| 410 /* non-zero if any displayed subwindow is in need of updating | |
| 411 somewhere. */ | |
| 412 int subwindows_state_changed; | |
| 413 int subwindows_state_changed_set; | |
| 414 | |
| 415 /* This variable is 1 if the icon has to be updated. | |
| 416 It is set to 1 when `frame-icon-glyph' changes. */ | |
| 417 int icon_changed; | |
| 418 int icon_changed_set; | |
| 419 | |
| 420 /* This variable is 1 if the menubar widget has to be updated. | |
| 421 It is set to 1 by set-menubar-dirty-flag and cleared when the widget | |
| 422 has been updated. */ | |
| 423 int menubar_changed; | |
| 424 int menubar_changed_set; | |
| 425 | |
| 426 /* true iff we should redraw the modelines on the next redisplay */ | |
| 427 int modeline_changed; | |
| 428 int modeline_changed_set; | |
| 429 | |
| 430 /* non-nil if point has changed in some buffer since the last time | |
| 431 redisplay completed */ | |
| 432 int point_changed; | |
| 433 int point_changed_set; | |
| 434 | |
| 435 /* non-nil if some frame has changed its size */ | |
| 436 int size_changed; | |
| 437 | |
| 438 /* non-nil if some device has signaled that it wants to change size */ | |
| 439 int asynch_device_change_pending; | |
| 440 | |
| 441 /* non-nil if any toolbar has changed */ | |
| 442 int toolbar_changed; | |
| 443 int toolbar_changed_set; | |
| 444 | |
| 905 | 445 /* Nonzero if some frame has changed the layout of internal elements |
| 446 (gutters or toolbars). */ | |
| 447 int frame_layout_changed; | |
| 448 | |
| 428 | 449 /* non-nil if any gutter has changed */ |
| 450 int gutter_changed; | |
| 451 int gutter_changed_set; | |
| 452 | |
| 453 /* non-nil if any window has changed since the last time redisplay completed */ | |
| 454 int windows_changed; | |
| 455 | |
| 456 /* non-nil if any frame's window structure has changed since the last | |
| 457 time redisplay completed */ | |
| 458 int windows_structure_changed; | |
| 459 | |
| 460 /* If non-nil, use vertical bar cursor. */ | |
| 461 Lisp_Object Vbar_cursor; | |
| 462 Lisp_Object Qbar_cursor; | |
| 463 | |
| 442 | 464 Lisp_Object Vvisible_bell; /* If true and the terminal will support it |
| 465 then the frame will flash instead of | |
| 466 beeping when an error occurs */ | |
| 428 | 467 |
| 468 /* Nonzero means no need to redraw the entire frame on resuming | |
| 469 a suspended Emacs. This is useful on terminals with multiple pages, | |
| 470 where one page is used for Emacs and another for all else. */ | |
| 471 int no_redraw_on_reenter; | |
| 472 | |
| 3360 | 473 Lisp_Object Vwindow_system; /* #### this variable is deprecated |
| 474 nil or a symbol naming the window system | |
| 428 | 475 under which emacs is running |
| 3360 | 476 (`x', `gtk', `mswindows', and `tty' are |
| 477 supported -- yes, TTYs are window systems | |
| 478 for this purpose. */ | |
|
4477
e34711681f30
Don't determine whether to call general device-type code at startup,
Aidan Kehoe <kehoea@parhasard.net>
parents:
4418
diff
changeset
|
479 Lisp_Object Vinitial_device_type; |
| 428 | 480 |
| 481 Lisp_Object Vglobal_mode_string; | |
| 482 | |
| 483 /* The number of lines scroll a window by when point leaves the window; if | |
| 484 it is <=0 then point is centered in the window */ | |
| 458 | 485 Fixnum scroll_step; |
| 428 | 486 |
| 487 /* Scroll up to this many lines, to bring point back on screen. */ | |
| 458 | 488 Fixnum scroll_conservatively; |
| 428 | 489 |
| 490 /* Marker for where to display an arrow on top of the buffer text. */ | |
| 491 Lisp_Object Voverlay_arrow_position; | |
| 492 /* String to display for the arrow. */ | |
| 493 Lisp_Object Voverlay_arrow_string; | |
| 494 | |
| 442 | 495 Lisp_Object Qbuffer_list_changed_hook, Vbuffer_list_changed_hook; |
| 496 | |
| 458 | 497 static Fixnum last_display_warning_tick; |
| 498 static Fixnum display_warning_tick; | |
| 428 | 499 Lisp_Object Qdisplay_warning_buffer; |
| 500 int inhibit_warning_display; | |
| 501 | |
| 502 Lisp_Object Vleft_margin_width, Vright_margin_width; | |
| 503 Lisp_Object Vminimum_line_ascent, Vminimum_line_descent; | |
| 504 Lisp_Object Vuse_left_overflow, Vuse_right_overflow; | |
| 505 Lisp_Object Vtext_cursor_visible_p; | |
| 506 | |
| 1292 | 507 static Lisp_Object QSin_redisplay; |
| 508 | |
| 1318 | 509 static Lisp_Object Vpost_redisplay_actions; |
| 510 | |
| 428 | 511 int column_number_start_at_one; |
| 512 | |
| 442 | 513 Lisp_Object Qtop_bottom; |
| 514 | |
| 444 | 515 #define WINDOW_SCROLLED(w) ((w)->hscroll > 0 || (w)->left_xoffset) |
| 428 | 516 |
| 1204 | 517 static const struct memory_description rune_dglyph_description_1[] = { |
| 518 { XD_LISP_OBJECT, offsetof (struct rune_dglyph, glyph) }, | |
| 519 { XD_LISP_OBJECT, offsetof (struct rune_dglyph, extent) }, | |
| 520 { XD_END } | |
| 521 }; | |
| 522 | |
| 523 static const struct sized_memory_description rune_dglyph_description = { | |
| 524 sizeof (struct rune_dglyph), rune_dglyph_description_1 | |
| 525 }; | |
| 526 | |
| 527 static const struct memory_description rune_object_description_1[] = { | |
| 2551 | 528 { XD_BLOCK_ARRAY, RUNE_DGLYPH, 1, { &rune_dglyph_description } }, |
| 1204 | 529 { XD_END } |
| 530 }; | |
| 531 | |
| 532 static const struct sized_memory_description rune_object_description = { | |
| 533 0, rune_object_description_1 | |
| 534 }; | |
| 535 | |
| 536 static const struct memory_description rune_description_1[] = { | |
| 537 { XD_INT, offsetof (rune, type) }, | |
| 538 { XD_UNION, offsetof (rune, object), | |
| 2551 | 539 XD_INDIRECT (0, 0), { &rune_object_description } }, |
| 1204 | 540 { XD_END } |
| 541 }; | |
| 542 | |
| 543 static const struct sized_memory_description rune_description = { | |
| 544 sizeof (rune), | |
| 545 rune_description_1 | |
| 546 }; | |
| 547 | |
| 548 static const struct memory_description rune_dynarr_description_1[] = { | |
| 549 XD_DYNARR_DESC (rune_dynarr, &rune_description), | |
| 550 { XD_END } | |
| 551 }; | |
| 552 | |
| 553 static const struct sized_memory_description rune_dynarr_description = { | |
| 554 sizeof (rune_dynarr), | |
| 555 rune_dynarr_description_1 | |
| 556 }; | |
| 557 | |
| 558 static const struct memory_description display_block_description_1[] = { | |
| 2367 | 559 { XD_BLOCK_PTR, offsetof (display_block, runes), |
| 2551 | 560 1, { &rune_dynarr_description } }, |
| 1204 | 561 { XD_END } |
| 562 }; | |
| 563 | |
| 564 static const struct sized_memory_description display_block_description = { | |
| 565 sizeof (display_block), | |
| 566 display_block_description_1 | |
| 567 }; | |
| 568 | |
| 569 static const struct memory_description display_block_dynarr_description_1[] = { | |
| 570 XD_DYNARR_DESC (display_block_dynarr, &display_block_description), | |
| 571 { XD_END } | |
| 572 }; | |
| 573 | |
| 574 static const struct sized_memory_description display_block_dynarr_description = { | |
| 575 sizeof (display_block_dynarr), | |
| 576 display_block_dynarr_description_1 | |
| 577 }; | |
| 578 | |
| 579 static const struct memory_description glyph_block_description_1[] = { | |
| 580 { XD_LISP_OBJECT, offsetof (glyph_block, glyph) }, | |
| 581 { XD_LISP_OBJECT, offsetof (glyph_block, extent) }, | |
| 582 { XD_END } | |
| 583 }; | |
| 584 | |
| 585 static const struct sized_memory_description glyph_block_description = { | |
| 586 sizeof (glyph_block), | |
| 587 glyph_block_description_1 | |
| 588 }; | |
| 589 | |
| 590 static const struct memory_description glyph_block_dynarr_description_1[] = { | |
| 591 XD_DYNARR_DESC (glyph_block_dynarr, &glyph_block_description), | |
| 592 { XD_END } | |
| 593 }; | |
| 594 | |
| 595 static const struct sized_memory_description glyph_block_dynarr_description = { | |
| 596 sizeof (glyph_block_dynarr), | |
| 597 glyph_block_dynarr_description_1 | |
| 598 }; | |
| 599 | |
| 600 static const struct memory_description display_line_description_1[] = { | |
| 2367 | 601 { XD_BLOCK_PTR, offsetof (display_line, display_blocks), |
| 2551 | 602 1, { &display_block_dynarr_description } }, |
| 2367 | 603 { XD_BLOCK_PTR, offsetof (display_line, left_glyphs), |
| 2551 | 604 1, { &glyph_block_dynarr_description } }, |
| 2367 | 605 { XD_BLOCK_PTR, offsetof (display_line, right_glyphs), |
| 2551 | 606 1, { &glyph_block_dynarr_description } }, |
| 1204 | 607 { XD_END } |
| 608 }; | |
| 609 | |
| 610 static const struct sized_memory_description display_line_description = { | |
| 611 sizeof (display_line), | |
| 612 display_line_description_1 | |
| 613 }; | |
| 614 | |
| 615 static const struct memory_description display_line_dynarr_description_1[] = { | |
| 616 XD_DYNARR_DESC (display_line_dynarr, &display_line_description), | |
| 617 { XD_END } | |
| 618 }; | |
| 619 | |
| 620 const struct sized_memory_description display_line_dynarr_description = { | |
| 621 sizeof (display_line_dynarr), | |
| 622 display_line_dynarr_description_1 | |
| 623 }; | |
| 624 | |
| 428 | 625 |
| 626 /***************************************************************************/ | |
| 627 /* */ | |
| 628 /* low-level interfaces onto device routines */ | |
| 629 /* */ | |
| 630 /***************************************************************************/ | |
| 631 | |
| 632 static int | |
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633 redisplay_window_text_width_ichar_string (struct window *w, int findex, |
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634 Ichar *str, Charcount len) |
| 428 | 635 { |
| 636 unsigned char charsets[NUM_LEADING_BYTES]; | |
| 637 Lisp_Object window; | |
| 638 | |
| 867 | 639 find_charsets_in_ichar_string (charsets, str, len); |
| 793 | 640 window = wrap_window (w); |
| 428 | 641 ensure_face_cachel_complete (WINDOW_FACE_CACHEL (w, findex), window, |
| 642 charsets); | |
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643 return DEVMETH (WINDOW_XDEVICE (w), |
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644 text_width, (w, WINDOW_FACE_CACHEL (w, findex), str, |
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645 len)); |
| 428 | 646 } |
| 647 | |
| 867 | 648 static Ichar_dynarr *rtw_ichar_dynarr; |
| 428 | 649 |
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650 static int |
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651 redisplay_window_text_width_string (struct window *w, int findex, |
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652 Ibyte *nonreloc, Lisp_Object reloc, |
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653 Bytecount offset, Bytecount len) |
| 428 | 654 { |
| 867 | 655 if (!rtw_ichar_dynarr) |
| 656 rtw_ichar_dynarr = Dynarr_new (Ichar); | |
| 657 Dynarr_reset (rtw_ichar_dynarr); | |
| 428 | 658 |
| 659 fixup_internal_substring (nonreloc, reloc, offset, &len); | |
| 660 if (STRINGP (reloc)) | |
| 661 nonreloc = XSTRING_DATA (reloc); | |
| 867 | 662 convert_ibyte_string_into_ichar_dynarr (nonreloc, len, rtw_ichar_dynarr); |
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663 return redisplay_window_text_width_ichar_string |
| 4967 | 664 (w, findex, Dynarr_begin (rtw_ichar_dynarr), |
| 867 | 665 Dynarr_length (rtw_ichar_dynarr)); |
| 428 | 666 } |
| 667 | |
| 668 int | |
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669 redisplay_text_width_string (Lisp_Object domain, Lisp_Object face, |
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670 Ibyte *nonreloc, Lisp_Object reloc, |
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671 Bytecount offset, Bytecount len) |
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672 { |
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673 Lisp_Object window = DOMAIN_WINDOW (domain); |
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674 Lisp_Object frame = DOMAIN_FRAME (domain); |
| 428 | 675 unsigned char charsets[NUM_LEADING_BYTES]; |
| 676 struct face_cachel cachel; | |
| 677 | |
| 867 | 678 if (!rtw_ichar_dynarr) |
| 679 rtw_ichar_dynarr = Dynarr_new (Ichar); | |
| 680 Dynarr_reset (rtw_ichar_dynarr); | |
| 428 | 681 |
| 682 fixup_internal_substring (nonreloc, reloc, offset, &len); | |
| 683 if (STRINGP (reloc)) | |
| 684 nonreloc = XSTRING_DATA (reloc); | |
| 867 | 685 convert_ibyte_string_into_ichar_dynarr (nonreloc, len, rtw_ichar_dynarr); |
| 686 find_charsets_in_ibyte_string (charsets, nonreloc, len); | |
| 428 | 687 reset_face_cachel (&cachel); |
| 688 cachel.face = face; | |
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689 ensure_face_cachel_complete (&cachel, |
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690 NILP (window) ? frame : window, |
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691 charsets); |
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692 return DEVMETH (XDEVICE (FRAME_DEVICE (XFRAME (frame))), |
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693 /* #### Not clear if we're always passed a window, but |
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694 I think so. If not, we will get an abort here, |
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695 and then we need to either fix the callers to pass in |
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696 a window, or change *text_width() to take a domain |
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697 argument. */ |
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698 text_width, (XWINDOW (window), |
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699 &cachel, |
| 4967 | 700 Dynarr_begin (rtw_ichar_dynarr), |
| 867 | 701 Dynarr_length (rtw_ichar_dynarr))); |
| 428 | 702 } |
| 703 | |
| 704 /* Return the display block from DL of the given TYPE. A display line | |
| 705 can have only one display block of each possible type. If DL does | |
| 706 not have a block of type TYPE, one will be created and added to DL. */ | |
| 707 | |
| 708 struct display_block * | |
| 709 get_display_block_from_line (struct display_line *dl, enum display_type type) | |
| 710 { | |
| 711 int elt; | |
| 712 struct display_block db; | |
| 713 | |
| 714 /* Check if this display line already has a block of the desired type and | |
| 715 if so, return it. */ | |
| 716 if (dl->display_blocks) | |
| 717 { | |
| 718 for (elt = 0; elt < Dynarr_length (dl->display_blocks); elt++) | |
| 719 { | |
| 720 if (Dynarr_at (dl->display_blocks, elt).type == type) | |
| 721 return Dynarr_atp (dl->display_blocks, elt); | |
| 722 } | |
| 723 | |
| 724 /* There isn't an active block of the desired type, but there | |
| 4187 | 725 might still be allocated blocks we need to reuse. */ |
| 428 | 726 if (elt < Dynarr_largest (dl->display_blocks)) |
| 727 { | |
| 728 struct display_block *dbp = Dynarr_atp (dl->display_blocks, elt); | |
| 729 | |
| 3025 | 730 /* "add" the block to the list */ |
| 428 | 731 Dynarr_increment (dl->display_blocks); |
| 732 | |
| 733 /* initialize and return */ | |
| 734 dbp->type = type; | |
| 735 return dbp; | |
| 736 } | |
| 737 } | |
| 738 else | |
| 739 { | |
| 740 /* This line doesn't have any display blocks, so initialize the display | |
| 4187 | 741 bock array. */ |
| 428 | 742 dl->display_blocks = Dynarr_new (display_block); |
| 743 } | |
| 744 | |
| 745 /* The line doesn't have a block of the desired type so go ahead and create | |
| 746 one and add it to the line. */ | |
| 747 xzero (db); | |
| 748 db.type = type; | |
| 749 db.runes = Dynarr_new (rune); | |
| 750 Dynarr_add (dl->display_blocks, db); | |
| 751 | |
| 752 /* Return the newly added display block. */ | |
| 753 elt = Dynarr_length (dl->display_blocks) - 1; | |
| 754 | |
| 755 return Dynarr_atp (dl->display_blocks, elt); | |
| 756 } | |
| 757 | |
| 758 static int | |
| 759 tab_char_width (struct window *w) | |
| 760 { | |
| 761 struct buffer *b = XBUFFER (w->buffer); | |
| 762 int char_tab_width = XINT (b->tab_width); | |
| 763 | |
| 764 if (char_tab_width <= 0 || char_tab_width > 1000) char_tab_width = 8; | |
| 765 | |
| 766 return char_tab_width; | |
| 767 } | |
| 768 | |
| 769 static int | |
| 770 space_width (struct window *w) | |
| 771 { | |
| 3659 | 772 /* While tabs are traditionally composed of spaces, for variable-width |
| 428 | 773 fonts the space character tends to give too narrow a value. So |
| 774 we use 'n' instead. Except that we don't. We use the default | |
| 775 character width for the default face. If this is actually | |
| 776 defined by the font then it is probably the best thing to | |
| 777 actually use. If it isn't, we have assumed it is 'n' and have | |
| 778 already calculated its width. Thus we can avoid a call to | |
| 779 XTextWidth on X frames by just querying the default width. */ | |
| 780 return XFONT_INSTANCE | |
| 781 (WINDOW_FACE_CACHEL_FONT (w, DEFAULT_INDEX, Vcharset_ascii))->width; | |
| 782 } | |
| 783 | |
| 784 static int | |
| 785 tab_pix_width (struct window *w) | |
| 786 { | |
| 787 return space_width (w) * tab_char_width (w); | |
| 788 } | |
| 789 | |
| 790 /* Given a pixel position in a window, return the pixel location of | |
| 791 the next tabstop. Tabs are calculated from the left window edge in | |
| 792 terms of spaces displayed in the default face. Formerly the space | |
| 793 width was determined using the currently active face. That method | |
| 794 leads to tabstops which do not line up. */ | |
| 795 | |
| 796 static int | |
| 797 next_tab_position (struct window *w, int start_pixpos, int left_pixpos) | |
| 798 { | |
| 799 int n_pos = left_pixpos; | |
| 800 int pix_tab_width = tab_pix_width (w); | |
| 801 | |
| 802 /* Adjust n_pos for any hscrolling which has happened. */ | |
| 803 if (WINDOW_SCROLLED (w)) | |
| 804 n_pos -= space_width (w) * (w->hscroll - 1) + w->left_xoffset; | |
| 805 | |
| 806 while (n_pos <= start_pixpos) | |
| 807 n_pos += pix_tab_width; | |
| 808 | |
| 809 return n_pos; | |
| 810 } | |
| 811 | |
| 812 /* For the given window, calculate the outside and margin boundaries for a | |
| 813 display line. The whitespace boundaries must be calculated by the text | |
| 814 layout routines. */ | |
| 815 | |
| 816 layout_bounds | |
| 817 calculate_display_line_boundaries (struct window *w, int modeline) | |
| 818 { | |
| 819 layout_bounds bounds; | |
| 820 | |
| 821 /* Set the outermost boundaries which are the boundaries of the | |
| 822 window itself minus the gutters (and minus the scrollbars if this | |
| 823 is for the modeline). */ | |
| 824 if (!modeline) | |
| 825 { | |
| 826 bounds.left_out = WINDOW_TEXT_LEFT (w); | |
| 827 bounds.right_out = WINDOW_TEXT_RIGHT (w); | |
| 828 } | |
| 829 else | |
| 830 { | |
| 831 bounds.left_out = WINDOW_MODELINE_LEFT (w); | |
| 832 bounds.right_out = WINDOW_MODELINE_RIGHT (w); | |
| 833 } | |
| 834 | |
| 835 /* The inner boundaries mark where the glyph margins are located. */ | |
| 836 bounds.left_in = bounds.left_out + window_left_margin_width (w); | |
| 837 bounds.right_in = bounds.right_out - window_right_margin_width (w); | |
| 838 | |
| 839 /* We cannot fully calculate the whitespace boundaries as they | |
| 840 depend on the contents of the line being displayed. */ | |
| 841 bounds.left_white = bounds.left_in; | |
| 842 bounds.right_white = bounds.right_in; | |
| 843 | |
| 844 return bounds; | |
| 845 } | |
| 846 | |
| 819 | 847 /* This takes a display_block and its containing line and corrects the yoffset |
| 848 of each glyph in the block to cater for the ascent of the line as a | |
| 849 whole. Must be called *after* the line-ascent is known! */ | |
| 850 | |
| 851 static void | |
| 852 calculate_yoffset (struct display_line *dl, struct display_block *fixup) | |
| 853 { | |
| 854 int i; | |
| 855 for (i=0; i<Dynarr_length (fixup->runes); i++) | |
| 856 { | |
| 857 struct rune *r = Dynarr_atp (fixup->runes,i); | |
| 858 if (r->type == RUNE_DGLYPH) | |
| 4187 | 859 { |
| 860 if (r->object.dglyph.ascent < dl->ascent) | |
| 861 r->object.dglyph.yoffset = dl->ascent - r->object.dglyph.ascent + | |
| 819 | 862 r->object.dglyph.descent; |
| 4187 | 863 } |
| 819 | 864 } |
| 865 } | |
| 866 | |
| 867 /* Calculate the textual baseline (the ascent and descent values for the | |
| 868 display_line as a whole). | |
| 869 | |
| 870 If the baseline is completely blank, or contains no manually positioned | |
| 871 glyphs, then the textual baseline is simply the baseline of the default font. | |
| 872 (The `contains no manually positioned glyphs' part is actually done for | |
| 867 | 873 us by `add_ichar_rune'.) |
| 819 | 874 |
| 875 If the baseline contains pixmaps, and they're all manually positioned, then | |
| 876 the textual baseline location is constrained that way, and we need do no | |
| 877 work. | |
| 878 | |
| 879 If the baseline contains pixmaps, and at least one is automatically | |
| 880 positioned, then the textual ascent is the largest ascent on the line, and | |
| 881 the textual descent is the largest descent (which is how things are set up at | |
| 882 entry to this function anyway): except that if the max_ascent + max_descent | |
| 883 is too small for the height of the line (say you've adjusted the baseline of | |
| 884 a short glyph, and there's a tall one next to it), then take the ascent and | |
| 885 descent for the line individually from the largest of the explicitly set | |
| 886 ascent/descent, and the rescaled ascent/descent of the default font, scaled | |
| 887 such that the largest glyph will fit. | |
| 888 | |
| 889 This means that if you have a short glyph (but taller than the default | |
| 890 font's descent) forced right under the baseline, and a really tall | |
| 891 automatically positioned glyph, that the descent for the line is just big | |
| 892 enough for the manually positioned short glyph, and the tall one uses as | |
| 893 much of that space as the default font would were it as tall as the tall | |
| 894 glyph; but that the ascent is big enough for the tall glyph to fit. | |
| 895 | |
| 896 This behaviour means that under no circumstances will changing the baseline | |
| 897 of a short glyph cause a tall glyph to move around; nor will it move the | |
| 898 textual baseline more than necessary. (Changing a tall glyph's baseline | |
| 899 might move the text's baseline arbitrarily, of course.) */ | |
| 900 | |
| 901 static void | |
| 902 calculate_baseline (pos_data *data) | |
| 903 { | |
| 904 /* Blank line: baseline is default font's baseline. */ | |
| 905 | |
| 906 if (!data->new_ascent && !data->new_descent) | |
| 907 { | |
| 908 /* We've got a blank line so initialize these values from the default | |
| 4187 | 909 face. */ |
| 819 | 910 default_face_font_info (data->window, &data->new_ascent, |
| 911 &data->new_descent, 0, 0, 0); | |
| 912 } | |
| 4187 | 913 |
| 819 | 914 /* No automatically positioned glyphs? Return at once. */ |
| 915 if (!data->need_baseline_computation) | |
| 916 return; | |
| 917 | |
| 918 /* Is the tallest glyph on the line automatically positioned? | |
| 919 If it's manually positioned, or it's automatically positioned | |
| 920 and there's enough room for it anyway, we need do no more work. */ | |
| 921 if (data->max_pixmap_height > data->new_ascent + data->new_descent) | |
| 922 { | |
| 923 int default_font_ascent, default_font_descent, default_font_height; | |
| 924 int scaled_default_font_ascent, scaled_default_font_descent; | |
| 4187 | 925 |
| 819 | 926 default_face_font_info (data->window, &default_font_ascent, |
|
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diff
changeset
|
927 &default_font_descent, 0, &default_font_height, |
|
07dcc7000bbf
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changeset
|
928 0); |
| 819 | 929 |
| 930 scaled_default_font_ascent = data->max_pixmap_height * | |
| 931 default_font_ascent / default_font_height; | |
| 932 | |
| 933 data->new_ascent = max (data->new_ascent, scaled_default_font_ascent); | |
| 934 | |
| 935 /* The ascent may have expanded now. Do we still need to grow the descent, | |
| 4187 | 936 or are things big enough? |
| 937 | |
| 938 The +1 caters for the baseline row itself. */ | |
| 819 | 939 if (data->max_pixmap_height > data->new_ascent + data->new_descent) |
| 4187 | 940 { |
| 941 scaled_default_font_descent = (data->max_pixmap_height * | |
| 819 | 942 default_font_descent / default_font_height) + 1; |
| 943 | |
| 4187 | 944 data->new_descent = max (data->new_descent, scaled_default_font_descent); |
| 945 } | |
| 819 | 946 } |
| 947 } | |
| 948 | |
| 428 | 949 /* Given a display line and a starting position, ensure that the |
| 950 contents of the display line accurately represent the visual | |
| 951 representation of the buffer contents starting from the given | |
| 952 position when displayed in the given window. The display line ends | |
| 953 when the contents of the line reach the right boundary of the given | |
| 954 window. */ | |
| 955 | |
| 665 | 956 static Charbpos |
| 428 | 957 generate_display_line (struct window *w, struct display_line *dl, int bounds, |
| 665 | 958 Charbpos start_pos, prop_block_dynarr **prop, |
| 428 | 959 int type) |
| 960 { | |
| 826 | 961 Charbpos ret_charpos; |
| 428 | 962 int overlay_width; |
| 963 struct buffer *b = XBUFFER (WINDOW_BUFFER (w)); | |
| 964 | |
| 965 /* If our caller hasn't already set the boundaries, then do so now. */ | |
| 966 if (!bounds) | |
| 967 dl->bounds = calculate_display_line_boundaries (w, 0); | |
| 968 | |
| 969 /* Reset what this line is using. */ | |
| 970 if (dl->display_blocks) | |
| 971 Dynarr_reset (dl->display_blocks); | |
| 972 if (dl->left_glyphs) | |
| 973 { | |
| 974 Dynarr_free (dl->left_glyphs); | |
| 975 dl->left_glyphs = 0; | |
| 976 } | |
| 977 if (dl->right_glyphs) | |
| 978 { | |
| 979 Dynarr_free (dl->right_glyphs); | |
| 980 dl->right_glyphs = 0; | |
| 981 } | |
| 982 | |
| 983 /* We aren't generating a modeline at the moment. */ | |
| 984 dl->modeline = 0; | |
| 985 | |
| 986 /* Create a display block for the text region of the line. */ | |
| 987 { | |
| 988 /* #### urk urk urk!!! Chuck fix this shit! */ | |
| 665 | 989 Bytebpos hacked_up_bytebpos = |
| 990 create_text_block (w, dl, charbpos_to_bytebpos (b, start_pos), | |
| 428 | 991 prop, type); |
| 826 | 992 if (hacked_up_bytebpos > BYTE_BUF_ZV (b)) |
| 993 ret_charpos = BUF_ZV (b) + 1; | |
| 428 | 994 else |
| 826 | 995 ret_charpos = bytebpos_to_charbpos (b, hacked_up_bytebpos); |
| 428 | 996 } |
| 826 | 997 dl->charpos = start_pos; |
| 998 if (dl->end_charpos < dl->charpos) | |
| 999 dl->end_charpos = dl->charpos; | |
| 428 | 1000 |
| 1001 if (MARKERP (Voverlay_arrow_position) | |
| 1002 && EQ (w->buffer, Fmarker_buffer (Voverlay_arrow_position)) | |
| 1003 && start_pos == marker_position (Voverlay_arrow_position) | |
| 1004 && (STRINGP (Voverlay_arrow_string) | |
| 1005 || GLYPHP (Voverlay_arrow_string))) | |
| 1006 { | |
| 1007 overlay_width = create_overlay_glyph_block (w, dl); | |
| 1008 } | |
| 1009 else | |
| 1010 overlay_width = 0; | |
| 1011 | |
| 1012 /* If there are left glyphs associated with any character in the | |
| 1013 text block, then create a display block to handle them. */ | |
| 1014 if (dl->left_glyphs != NULL && Dynarr_length (dl->left_glyphs)) | |
| 1015 create_left_glyph_block (w, dl, overlay_width); | |
| 1016 | |
| 1017 /* If there are right glyphs associated with any character in the | |
| 1018 text block, then create a display block to handle them. */ | |
| 1019 if (dl->right_glyphs != NULL && Dynarr_length (dl->right_glyphs)) | |
| 1020 create_right_glyph_block (w, dl); | |
| 1021 | |
| 1022 /* In the future additional types of display blocks may be generated | |
| 1023 here. */ | |
| 1024 | |
| 826 | 1025 w->last_redisplay_pos = ret_charpos; |
| 1026 | |
| 1027 return ret_charpos; | |
| 428 | 1028 } |
| 1029 | |
| 1030 /* Adds an hscroll glyph to a display block. If this is called, then | |
| 1031 the block had better be empty. | |
| 1032 | |
| 1033 Yes, there are multiple places where this function is called but | |
| 1034 that is the way it has to be. Each calling function has to deal | |
| 826 | 1035 with byte_start_col_enabled a little differently depending on the |
| 428 | 1036 object being worked with. */ |
| 1037 | |
| 1038 static prop_block_dynarr * | |
| 1039 add_hscroll_rune (pos_data *data) | |
| 1040 { | |
| 1041 struct glyph_block gb; | |
| 1042 prop_block_dynarr *retval; | |
| 826 | 1043 Bytebpos byte_old_cursor_charpos = data->byte_cursor_charpos; |
| 647 | 1044 int old_cursor_type = data->cursor_type; |
| 826 | 1045 Bytebpos byte_old_charpos = data->byte_charpos; |
| 428 | 1046 |
| 1047 if (data->cursor_type == CURSOR_ON | |
| 826 | 1048 && data->byte_cursor_charpos >= data->byte_start_col_enabled |
| 1049 && data->byte_cursor_charpos <= data->byte_charpos) | |
| 1050 { | |
| 1051 data->byte_cursor_charpos = data->byte_start_col_enabled; | |
| 428 | 1052 } |
| 1053 else | |
| 1054 { | |
| 1055 data->cursor_type = NO_CURSOR; | |
| 1056 } | |
| 1057 | |
| 826 | 1058 data->byte_endpos = data->byte_charpos; |
| 1059 data->byte_charpos = data->byte_start_col_enabled; | |
| 428 | 1060 |
| 1061 gb.extent = Qnil; | |
| 1062 gb.glyph = Vhscroll_glyph; | |
| 1063 { | |
| 1064 int oldpixpos = data->pixpos; | |
| 442 | 1065 retval = add_glyph_rune (data, &gb, BEGIN_GLYPHS, 0, |
| 428 | 1066 GLYPH_CACHEL (XWINDOW (data->window), |
| 1067 HSCROLL_GLYPH_INDEX)); | |
| 1068 data->hscroll_glyph_width_adjust = | |
| 1069 data->pixpos - oldpixpos - space_width (XWINDOW (data->window)); | |
| 1070 } | |
| 826 | 1071 data->byte_endpos = 0; |
| 1072 data->byte_cursor_charpos = byte_old_cursor_charpos; | |
| 428 | 1073 data->cursor_type = old_cursor_type; |
| 826 | 1074 data->byte_charpos = byte_old_charpos; |
| 1075 | |
| 1076 data->byte_start_col_enabled = 0; | |
| 428 | 1077 return retval; |
| 1078 } | |
| 1079 | |
| 793 | 1080 /* Adds a character rune to a display block. If there is not enough room |
| 1081 to fit the rune on the display block (as determined by the MAX_PIXPOS) | |
| 1082 then it adds nothing and returns ADD_FAILED. If | |
| 1083 NO_CONTRIBUTE_TO_LINE_HEIGHT is non-zero, don't allow the char's height | |
| 867 | 1084 to affect the total line height. (See add_ibyte_string_runes()). */ |
| 428 | 1085 |
| 1086 static prop_block_dynarr * | |
| 867 | 1087 add_ichar_rune_1 (pos_data *data, int no_contribute_to_line_height) |
| 428 | 1088 { |
| 1089 struct rune rb, *crb; | |
| 1090 int width, local; | |
| 1091 | |
| 1092 if (data->start_col) | |
| 1093 { | |
| 1094 data->start_col--; | |
| 1095 | |
| 1096 if (data->start_col) | |
| 1097 return NULL; | |
| 1098 } | |
| 1099 | |
| 826 | 1100 if (data->byte_start_col_enabled) |
| 428 | 1101 { |
| 1102 return add_hscroll_rune (data); | |
| 1103 } | |
| 1104 | |
| 1105 if (data->ch == '\n') | |
| 1106 { | |
| 1107 data->font_is_bogus = 0; | |
| 1108 /* Cheesy end-of-line pseudo-character. */ | |
| 1109 width = data->blank_width; | |
| 1110 } | |
| 1111 else | |
| 1112 { | |
| 867 | 1113 Lisp_Object charset = ichar_charset (data->ch); |
| 428 | 1114 if (!EQ (charset, data->last_charset) || |
| 1115 data->findex != data->last_findex) | |
| 1116 { | |
| 1117 /* OK, we need to do things the hard way. */ | |
| 1118 struct window *w = XWINDOW (data->window); | |
| 1119 struct face_cachel *cachel = WINDOW_FACE_CACHEL (w, data->findex); | |
| 1120 Lisp_Object font_instance = | |
| 1121 ensure_face_cachel_contains_charset (cachel, data->window, | |
| 1122 charset); | |
| 440 | 1123 Lisp_Font_Instance *fi; |
| 428 | 1124 |
| 1125 if (EQ (font_instance, Vthe_null_font_instance)) | |
| 1126 { | |
| 1127 font_instance = FACE_CACHEL_FONT (cachel, Vcharset_ascii); | |
| 1128 data->font_is_bogus = 1; | |
| 1129 } | |
| 1130 else | |
| 1131 data->font_is_bogus = 0; | |
| 1132 | |
| 1133 fi = XFONT_INSTANCE (font_instance); | |
| 771 | 1134 if (!fi->proportional_p || data->font_is_bogus) |
| 1135 { | |
| 867 | 1136 Ichar ch = data->font_is_bogus ? '~' : data->ch; |
| 771 | 1137 |
| 1138 data->last_char_width = | |
|
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parents:
4528
diff
changeset
|
1139 redisplay_window_text_width_ichar_string |
|
6540302eedf5
Fix query_string_geometry lookup domain
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parents:
4528
diff
changeset
|
1140 (XWINDOW (data->window), data->findex, &ch, 1); |
| 771 | 1141 } |
| 428 | 1142 else |
| 1143 data->last_char_width = -1; | |
| 819 | 1144 |
| 793 | 1145 if (!no_contribute_to_line_height) |
| 1146 { | |
| 1147 data->new_ascent = max (data->new_ascent, (int) fi->ascent); | |
| 1148 data->new_descent = max (data->new_descent, (int) fi->descent); | |
| 1149 } | |
| 819 | 1150 |
| 428 | 1151 data->last_charset = charset; |
| 1152 data->last_findex = data->findex; | |
| 1153 } | |
| 1154 | |
| 1155 width = data->last_char_width; | |
| 771 | 1156 if (width < 0) /* proportional fonts */ |
|
4815
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parents:
4528
diff
changeset
|
1157 width = redisplay_window_text_width_ichar_string |
|
6540302eedf5
Fix query_string_geometry lookup domain
Didier Verna <didier@lrde.epita.fr>
parents:
4528
diff
changeset
|
1158 (XWINDOW (data->window), data->findex, &data->ch, 1); |
| 428 | 1159 } |
| 1160 | |
| 1161 if (data->max_pixpos != -1 && (data->pixpos + width > data->max_pixpos)) | |
| 1162 { | |
| 1163 return ADD_FAILED; | |
| 1164 } | |
| 1165 | |
| 1166 if (Dynarr_length (data->db->runes) < Dynarr_largest (data->db->runes)) | |
| 1167 { | |
|
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Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
1168 crb = Dynarr_past_lastp (data->db->runes); |
| 428 | 1169 local = 0; |
| 1170 } | |
| 1171 else | |
| 1172 { | |
| 1173 crb = &rb; | |
| 1174 local = 1; | |
| 1175 } | |
| 1176 | |
| 1177 crb->findex = data->findex; | |
| 1178 crb->xpos = data->pixpos; | |
| 1179 crb->width = width; | |
| 826 | 1180 if (data->byte_charpos) |
| 428 | 1181 { |
| 1182 if (NILP (data->string)) | |
| 826 | 1183 crb->charpos = |
| 793 | 1184 bytebpos_to_charbpos (XBUFFER (WINDOW_BUFFER |
| 1185 (XWINDOW (data->window))), | |
| 826 | 1186 data->byte_charpos); |
| 428 | 1187 else |
| 826 | 1188 crb->charpos = |
| 1189 string_index_byte_to_char (data->string, data->byte_charpos); | |
| 428 | 1190 } |
| 1191 else if (data->is_modeline) | |
| 826 | 1192 crb->charpos = data->modeline_charpos; |
| 428 | 1193 else |
| 442 | 1194 /* Text but not in buffer */ |
| 826 | 1195 crb->charpos = 0; |
| 428 | 1196 crb->type = RUNE_CHAR; |
| 1197 crb->object.chr.ch = data->font_is_bogus ? '~' : data->ch; | |
| 1198 crb->endpos = 0; | |
| 1199 | |
| 1200 if (data->cursor_type == CURSOR_ON) | |
| 1201 { | |
| 826 | 1202 if (data->byte_charpos == data->byte_cursor_charpos) |
| 428 | 1203 { |
| 1204 crb->cursor_type = CURSOR_ON; | |
| 1205 data->cursor_x = Dynarr_length (data->db->runes); | |
| 1206 } | |
| 1207 else | |
| 1208 crb->cursor_type = CURSOR_OFF; | |
| 1209 } | |
| 1210 else if (data->cursor_type == NEXT_CURSOR) | |
| 1211 { | |
| 1212 crb->cursor_type = CURSOR_ON; | |
| 1213 data->cursor_x = Dynarr_length (data->db->runes); | |
| 1214 data->cursor_type = NO_CURSOR; | |
| 1215 } | |
| 1216 else if (data->cursor_type == IGNORE_CURSOR) | |
| 1217 crb->cursor_type = IGNORE_CURSOR; | |
| 1218 else | |
| 1219 crb->cursor_type = CURSOR_OFF; | |
| 1220 | |
| 1221 if (local) | |
| 1222 Dynarr_add (data->db->runes, *crb); | |
| 1223 else | |
| 1224 Dynarr_increment (data->db->runes); | |
| 1225 | |
| 1226 data->pixpos += width; | |
| 1227 | |
| 1228 return NULL; | |
| 1229 } | |
| 1230 | |
| 793 | 1231 static prop_block_dynarr * |
| 867 | 1232 add_ichar_rune (pos_data *data) |
| 1233 { | |
| 1234 return add_ichar_rune_1 (data, 0); | |
| 1235 } | |
| 1236 | |
| 1237 /* Given a string C_STRING of length C_LENGTH, call add_ichar_rune for | |
| 793 | 1238 each character in the string. Propagate any left-over data unless |
| 1239 NO_PROP is non-zero. If NO_CONTRIBUTE_TO_LINE_HEIGHT is non-zero, don't | |
| 1240 allow this character to increase the total height of the line. (This is | |
| 1241 used when the character is part of a text glyph. In that case, the | |
| 1242 glyph code itself adjusts the line height as necessary, depending on | |
| 1243 whether glyph-contrib-p is true.) */ | |
| 428 | 1244 |
| 1245 static prop_block_dynarr * | |
| 867 | 1246 add_ibyte_string_runes (pos_data *data, Ibyte *c_string, |
| 793 | 1247 Bytecount c_length, int no_prop, |
| 1248 int no_contribute_to_line_height) | |
| 428 | 1249 { |
| 867 | 1250 Ibyte *pos, *end = c_string + c_length; |
| 428 | 1251 prop_block_dynarr *prop; |
| 1252 | |
| 1253 /* #### This function is too simplistic. It needs to do the same | |
| 1254 sort of character interpretation (display-table lookup, | |
| 1255 ctl-arrow checking), etc. that create_text_block() does. | |
| 1256 The functionality to do this in that routine needs to be | |
| 1257 modularized. */ | |
| 1258 | |
| 1259 for (pos = c_string; pos < end;) | |
| 1260 { | |
| 867 | 1261 Ibyte *old_pos = pos; |
| 1262 | |
| 1263 data->ch = itext_ichar (pos); | |
| 1264 | |
| 1265 prop = add_ichar_rune_1 (data, no_contribute_to_line_height); | |
| 428 | 1266 |
| 1267 if (prop) | |
| 1268 { | |
| 1269 if (no_prop) | |
| 1270 return ADD_FAILED; | |
| 1271 else | |
| 1272 { | |
| 1273 struct prop_block pb; | |
| 1274 Bytecount len = end - pos; | |
| 1275 prop = Dynarr_new (prop_block); | |
| 1276 | |
| 1277 pb.type = PROP_STRING; | |
| 867 | 1278 pb.data.p_string.str = xnew_array (Ibyte, len); |
| 4970 | 1279 qxestrncpy (pb.data.p_string.str, pos, len); |
| 428 | 1280 pb.data.p_string.len = len; |
| 1281 | |
| 1282 Dynarr_add (prop, pb); | |
| 1283 return prop; | |
| 1284 } | |
| 1285 } | |
| 867 | 1286 INC_IBYTEPTR (pos); |
| 428 | 1287 assert (pos <= end); |
| 464 | 1288 /* #### Duplicate code from add_string_to_fstring_db_runes |
| 1289 should we do more?*/ | |
| 1290 data->bytepos += pos - old_pos; | |
| 428 | 1291 } |
| 1292 | |
| 1293 return NULL; | |
| 1294 } | |
| 1295 | |
| 1296 /* Add a single rune of the specified width. The area covered by this | |
| 1297 rune will be displayed in the foreground color of the associated | |
| 1298 face. */ | |
| 1299 | |
| 1300 static prop_block_dynarr * | |
| 1301 add_blank_rune (pos_data *data, struct window *w, int char_tab_width) | |
| 1302 { | |
| 1303 struct rune rb; | |
| 1304 | |
| 1305 /* If data->start_col is not 0 then this call to add_blank_rune must have | |
| 1306 been to add it as a tab. */ | |
| 1307 if (data->start_col) | |
| 1308 { | |
| 1309 /* assert (w != NULL) */ | |
| 1310 prop_block_dynarr *retval; | |
| 1311 | |
| 1312 /* If we have still not fully scrolled horizontally, subtract | |
| 4187 | 1313 the width of this tab and return. */ |
| 428 | 1314 if (char_tab_width < data->start_col) |
| 1315 { | |
| 1316 data->start_col -= char_tab_width; | |
| 1317 return NULL; | |
| 1318 } | |
| 1319 else if (char_tab_width == data->start_col) | |
| 1320 data->blank_width = 0; | |
| 1321 else | |
| 1322 { | |
| 1323 int spcwid = space_width (w); | |
| 1324 | |
| 1325 if (spcwid >= data->blank_width) | |
| 1326 data->blank_width = 0; | |
| 1327 else | |
| 1328 data->blank_width -= spcwid; | |
| 1329 } | |
| 1330 | |
| 1331 data->start_col = 0; | |
| 1332 retval = add_hscroll_rune (data); | |
| 1333 | |
| 1334 /* Could be caused by the handling of the hscroll rune. */ | |
| 1335 if (retval != NULL || !data->blank_width) | |
| 1336 return retval; | |
| 1337 } | |
| 1338 | |
| 1339 /* Blank runes are always calculated to fit. */ | |
| 1340 assert (data->pixpos + data->blank_width <= data->max_pixpos); | |
| 1341 | |
| 1342 rb.findex = data->findex; | |
| 1343 rb.xpos = data->pixpos; | |
| 1344 rb.width = data->blank_width; | |
| 826 | 1345 if (data->byte_charpos) |
| 1346 rb.charpos = | |
| 665 | 1347 bytebpos_to_charbpos (XBUFFER (WINDOW_BUFFER (XWINDOW (data->window))), |
| 826 | 1348 data->byte_charpos); |
| 428 | 1349 else |
| 1350 /* #### and this is really correct too? */ | |
| 826 | 1351 rb.charpos = 0; |
| 428 | 1352 rb.endpos = 0; |
| 1353 rb.type = RUNE_BLANK; | |
| 1354 | |
| 1355 if (data->cursor_type == CURSOR_ON) | |
| 1356 { | |
| 826 | 1357 if (data->byte_charpos == data->byte_cursor_charpos) |
| 428 | 1358 { |
| 1359 rb.cursor_type = CURSOR_ON; | |
| 1360 data->cursor_x = Dynarr_length (data->db->runes); | |
| 1361 } | |
| 1362 else | |
| 1363 rb.cursor_type = CURSOR_OFF; | |
| 1364 } | |
| 1365 else if (data->cursor_type == NEXT_CURSOR) | |
| 1366 { | |
| 1367 rb.cursor_type = CURSOR_ON; | |
| 1368 data->cursor_x = Dynarr_length (data->db->runes); | |
| 1369 data->cursor_type = NO_CURSOR; | |
| 1370 } | |
| 1371 else | |
| 1372 rb.cursor_type = CURSOR_OFF; | |
| 1373 | |
| 1374 Dynarr_add (data->db->runes, rb); | |
| 1375 data->pixpos += data->blank_width; | |
| 1376 | |
| 1377 return NULL; | |
| 1378 } | |
| 1379 | |
| 1380 /* Add runes representing a character in octal. */ | |
| 1381 | |
| 1382 #define ADD_NEXT_OCTAL_RUNE_CHAR do \ | |
| 1383 { \ | |
| 867 | 1384 if (add_failed || (add_failed = add_ichar_rune (data))) \ |
| 428 | 1385 { \ |
| 1386 struct prop_block pb; \ | |
| 1387 if (!prop) \ | |
| 1388 prop = Dynarr_new (prop_block); \ | |
| 1389 \ | |
| 1390 pb.type = PROP_CHAR; \ | |
| 1391 pb.data.p_char.ch = data->ch; \ | |
| 1392 pb.data.p_char.cursor_type = data->cursor_type; \ | |
| 1393 Dynarr_add (prop, pb); \ | |
| 1394 } \ | |
| 1395 } while (0) | |
| 1396 | |
| 1397 static prop_block_dynarr * | |
| 1398 add_octal_runes (pos_data *data) | |
| 1399 { | |
| 819 | 1400 prop_block_dynarr *add_failed, *prop = 0; |
| 867 | 1401 Ichar orig_char = data->ch; |
| 647 | 1402 int orig_cursor_type = data->cursor_type; |
| 428 | 1403 |
| 1404 /* Initialize */ | |
| 1405 add_failed = NULL; | |
| 1406 | |
| 1407 if (data->start_col) | |
| 1408 data->start_col--; | |
| 1409 | |
| 1410 if (!data->start_col) | |
| 1411 { | |
| 826 | 1412 if (data->byte_start_col_enabled) |
| 428 | 1413 { |
| 1414 add_failed = add_hscroll_rune (data); | |
| 1415 } | |
| 1416 else | |
| 1417 { | |
| 1418 struct glyph_block gb; | |
| 1419 struct window *w = XWINDOW (data->window); | |
| 1420 | |
| 1421 gb.extent = Qnil; | |
| 1422 gb.glyph = Voctal_escape_glyph; | |
| 1423 add_failed = | |
| 1424 add_glyph_rune (data, &gb, BEGIN_GLYPHS, 1, | |
| 1425 GLYPH_CACHEL (w, OCT_ESC_GLYPH_INDEX)); | |
| 1426 } | |
| 1427 } | |
| 1428 | |
| 1429 /* We only propagate information if the glyph was partially | |
| 1430 added. */ | |
| 1431 if (add_failed) | |
| 1432 return add_failed; | |
| 1433 | |
| 1434 data->cursor_type = IGNORE_CURSOR; | |
| 1435 | |
| 1436 if (data->ch >= 0x100) | |
| 1437 { | |
| 1438 /* If the character is an extended Mule character, it could have | |
| 3498 | 1439 up to 21 bits. For the moment, we treat it as a seven-digit |
| 428 | 1440 octal number. This is not that pretty, but whatever. */ |
| 1441 data->ch = (7 & (orig_char >> 18)) + '0'; | |
| 1442 ADD_NEXT_OCTAL_RUNE_CHAR; | |
| 1443 | |
| 1444 data->ch = (7 & (orig_char >> 15)) + '0'; | |
| 1445 ADD_NEXT_OCTAL_RUNE_CHAR; | |
| 1446 | |
| 1447 data->ch = (7 & (orig_char >> 12)) + '0'; | |
| 1448 ADD_NEXT_OCTAL_RUNE_CHAR; | |
| 1449 | |
| 1450 data->ch = (7 & (orig_char >> 9)) + '0'; | |
| 1451 ADD_NEXT_OCTAL_RUNE_CHAR; | |
| 1452 } | |
| 1453 | |
| 1454 data->ch = (7 & (orig_char >> 6)) + '0'; | |
| 1455 ADD_NEXT_OCTAL_RUNE_CHAR; | |
| 1456 | |
| 1457 data->ch = (7 & (orig_char >> 3)) + '0'; | |
| 1458 ADD_NEXT_OCTAL_RUNE_CHAR; | |
| 1459 | |
| 1460 data->ch = (7 & orig_char) + '0'; | |
| 1461 ADD_NEXT_OCTAL_RUNE_CHAR; | |
| 1462 | |
| 1463 data->cursor_type = orig_cursor_type; | |
| 819 | 1464 return NULL; |
| 428 | 1465 } |
| 1466 | |
| 1467 #undef ADD_NEXT_OCTAL_RUNE_CHAR | |
| 1468 | |
| 1469 /* Add runes representing a control character to a display block. */ | |
| 1470 | |
| 1471 static prop_block_dynarr * | |
| 1472 add_control_char_runes (pos_data *data, struct buffer *b) | |
| 1473 { | |
| 1474 if (!NILP (b->ctl_arrow)) | |
| 1475 { | |
| 1476 prop_block_dynarr *prop; | |
| 867 | 1477 Ichar orig_char = data->ch; |
| 647 | 1478 int old_cursor_type = data->cursor_type; |
| 428 | 1479 |
| 1480 /* Initialize */ | |
| 1481 prop = NULL; | |
| 1482 | |
| 1483 if (data->start_col) | |
| 1484 data->start_col--; | |
| 1485 | |
| 1486 if (!data->start_col) | |
| 1487 { | |
| 826 | 1488 if (data->byte_start_col_enabled) |
| 428 | 1489 { |
| 1490 prop_block_dynarr *retval; | |
| 1491 | |
| 1492 retval = add_hscroll_rune (data); | |
| 1493 if (retval) | |
| 1494 return retval; | |
| 1495 } | |
| 1496 else | |
| 1497 { | |
| 1498 struct glyph_block gb; | |
| 1499 struct window *w = XWINDOW (data->window); | |
| 1500 | |
| 1501 gb.extent = Qnil; | |
| 1502 gb.glyph = Vcontrol_arrow_glyph; | |
| 1503 | |
| 1504 /* We only propagate information if the glyph was partially | |
| 1505 added. */ | |
| 1506 if (add_glyph_rune (data, &gb, BEGIN_GLYPHS, 1, | |
| 1507 GLYPH_CACHEL (w, CONTROL_GLYPH_INDEX))) | |
| 1508 return ADD_FAILED; | |
| 1509 } | |
| 1510 } | |
| 1511 | |
| 1512 if (orig_char == 0177) | |
| 1513 data->ch = '?'; | |
| 1514 else | |
| 1515 data->ch = orig_char ^ 0100; | |
| 1516 data->cursor_type = IGNORE_CURSOR; | |
| 1517 | |
| 867 | 1518 if (add_ichar_rune (data)) |
| 428 | 1519 { |
| 1520 struct prop_block pb; | |
| 1521 if (!prop) | |
| 1522 prop = Dynarr_new (prop_block); | |
| 1523 | |
| 1524 pb.type = PROP_CHAR; | |
| 1525 pb.data.p_char.ch = data->ch; | |
| 1526 pb.data.p_char.cursor_type = data->cursor_type; | |
| 1527 Dynarr_add (prop, pb); | |
| 1528 } | |
| 1529 | |
| 1530 data->cursor_type = old_cursor_type; | |
| 1531 return prop; | |
| 1532 } | |
| 1533 else | |
| 1534 { | |
| 1535 return add_octal_runes (data); | |
| 1536 } | |
| 1537 } | |
| 1538 | |
| 1539 static prop_block_dynarr * | |
| 1540 add_disp_table_entry_runes_1 (pos_data *data, Lisp_Object entry) | |
| 1541 { | |
| 1542 prop_block_dynarr *prop = NULL; | |
| 1543 | |
| 1544 if (STRINGP (entry)) | |
| 1545 { | |
| 867 | 1546 prop = add_ibyte_string_runes (data, |
| 428 | 1547 XSTRING_DATA (entry), |
| 1548 XSTRING_LENGTH (entry), | |
| 793 | 1549 0, 0); |
| 428 | 1550 } |
| 1551 else if (GLYPHP (entry)) | |
| 1552 { | |
| 1553 if (data->start_col) | |
| 1554 data->start_col--; | |
| 1555 | |
| 826 | 1556 if (!data->start_col && data->byte_start_col_enabled) |
| 428 | 1557 { |
| 1558 prop = add_hscroll_rune (data); | |
| 1559 } | |
| 1560 else | |
| 1561 { | |
| 1562 struct glyph_block gb; | |
| 1563 | |
| 1564 gb.glyph = entry; | |
| 1565 gb.extent = Qnil; | |
| 1566 prop = add_glyph_rune (data, &gb, BEGIN_GLYPHS, 0, 0); | |
| 1567 } | |
| 1568 } | |
| 1569 else if (CHAR_OR_CHAR_INTP (entry)) | |
| 1570 { | |
| 1571 data->ch = XCHAR_OR_CHAR_INT (entry); | |
| 867 | 1572 prop = add_ichar_rune (data); |
| 428 | 1573 } |
| 1574 else if (CONSP (entry)) | |
| 1575 { | |
| 1576 if (EQ (XCAR (entry), Qformat) | |
| 1577 && CONSP (XCDR (entry)) | |
| 1578 && STRINGP (XCAR (XCDR (entry)))) | |
| 1579 { | |
| 1580 Lisp_Object format = XCAR (XCDR (entry)); | |
| 665 | 1581 Bytebpos len = XSTRING_LENGTH (format); |
| 867 | 1582 Ibyte *src = XSTRING_DATA (format), *end = src + len; |
| 2367 | 1583 Ibyte *result = alloca_ibytes (len); |
| 867 | 1584 Ibyte *dst = result; |
| 428 | 1585 |
| 1586 while (src < end) | |
| 1587 { | |
| 867 | 1588 Ichar c = itext_ichar (src); |
| 1589 INC_IBYTEPTR (src); | |
| 428 | 1590 if (c != '%' || src == end) |
| 867 | 1591 dst += set_itext_ichar (dst, c); |
| 428 | 1592 else |
| 1593 { | |
| 867 | 1594 c = itext_ichar (src); |
| 1595 INC_IBYTEPTR (src); | |
| 428 | 1596 switch (c) |
| 1597 { | |
| 1598 /*case 'x': | |
| 1599 dst += long_to_string_base ((char *)dst, data->ch, 16); | |
| 1600 break;*/ | |
| 1601 case '%': | |
| 867 | 1602 dst += set_itext_ichar (dst, '%'); |
| 428 | 1603 break; |
| 442 | 1604 /* #### unimplemented */ |
| 428 | 1605 } |
| 1606 } | |
| 1607 } | |
| 867 | 1608 prop = add_ibyte_string_runes (data, result, dst - result, 0, 0); |
| 428 | 1609 } |
| 1610 } | |
| 1611 | |
| 1612 /* Else blow it off because someone added a bad entry and we don't | |
| 1613 have any safe way of signaling an error. */ | |
| 1614 return prop; | |
| 1615 } | |
| 1616 | |
| 1617 /* Given a display table entry, call the appropriate functions to | |
| 1618 display each element of the entry. */ | |
| 1619 | |
| 1620 static prop_block_dynarr * | |
| 1621 add_disp_table_entry_runes (pos_data *data, Lisp_Object entry) | |
| 1622 { | |
| 1623 prop_block_dynarr *prop = NULL; | |
| 1624 if (VECTORP (entry)) | |
| 1625 { | |
| 440 | 1626 Lisp_Vector *de = XVECTOR (entry); |
| 428 | 1627 EMACS_INT len = vector_length (de); |
| 1628 int elt; | |
| 1629 | |
| 1630 for (elt = 0; elt < len; elt++) | |
| 1631 { | |
| 1632 if (NILP (vector_data (de)[elt])) | |
| 1633 continue; | |
| 1634 else | |
| 1635 prop = add_disp_table_entry_runes_1 (data, vector_data (de)[elt]); | |
| 1636 /* Else blow it off because someone added a bad entry and we | |
| 1637 don't have any safe way of signaling an error. Hey, this | |
| 1638 comment sounds familiar. */ | |
| 1639 | |
| 1640 /* #### Still need to add any remaining elements to the | |
| 4187 | 1641 propagation information. */ |
| 428 | 1642 if (prop) |
| 1643 return prop; | |
| 1644 } | |
| 1645 } | |
| 1646 else | |
| 1647 prop = add_disp_table_entry_runes_1 (data, entry); | |
| 1648 return prop; | |
| 1649 } | |
| 1650 | |
| 1651 /* Add runes which were propagated from the previous line. */ | |
| 1652 | |
| 1653 static prop_block_dynarr * | |
| 1654 add_propagation_runes (prop_block_dynarr **prop, pos_data *data) | |
| 1655 { | |
| 1656 /* #### Remember to handle start_col parameter of data when the rest of | |
| 1657 this is finished. */ | |
| 1658 /* #### Chuck -- I've redone this function a bit. It looked like the | |
| 1659 case of not all the propagation blocks being added was not handled | |
| 1660 well. */ | |
| 1661 /* #### Chuck -- I also think the double indirection of PROP is kind | |
| 1662 of bogus. A cleaner solution is just to check for | |
| 1663 Dynarr_length (prop) > 0. */ | |
| 1664 /* #### This function also doesn't even pay attention to ADD_FAILED! | |
| 1665 This is seriously fucked! Seven ####'s in 130 lines -- is that a | |
| 1666 record? */ | |
| 1667 int elt; | |
| 1668 prop_block_dynarr *add_failed; | |
| 826 | 1669 Bytebpos byte_old_cursor_charpos = data->byte_cursor_charpos; |
| 647 | 1670 int old_cursor_type = data->cursor_type; |
| 428 | 1671 |
| 1672 for (elt = 0; elt < Dynarr_length (*prop); elt++) | |
| 1673 { | |
| 1674 struct prop_block *pb = Dynarr_atp (*prop, elt); | |
| 1675 | |
| 1676 switch (pb->type) | |
| 1677 { | |
| 1678 case PROP_CHAR: | |
| 1679 data->ch = pb->data.p_char.ch; | |
| 826 | 1680 data->byte_cursor_charpos = pb->data.p_char.byte_cursor_charpos; |
| 428 | 1681 data->cursor_type = pb->data.p_char.cursor_type; |
| 867 | 1682 add_failed = add_ichar_rune (data); |
| 428 | 1683 |
| 1684 if (add_failed) | |
| 1685 goto oops_no_more_space; | |
| 1686 break; | |
| 1687 case PROP_STRING: | |
| 1688 if (pb->data.p_string.str) | |
|
4976
16112448d484
Rename xfree(FOO, TYPE) -> xfree(FOO)
Ben Wing <ben@xemacs.org>
parents:
4970
diff
changeset
|
1689 xfree (pb->data.p_string.str); |
| 428 | 1690 /* #### bogus bogus -- this doesn't do anything! |
| 867 | 1691 Should probably call add_ibyte_string_runes(), |
| 428 | 1692 once that function is fixed. */ |
| 1693 break; | |
| 1694 case PROP_MINIBUF_PROMPT: | |
| 1695 { | |
| 1696 face_index old_findex = data->findex; | |
| 826 | 1697 Bytebpos byte_old_charpos = data->byte_charpos; |
| 428 | 1698 |
| 1699 data->findex = DEFAULT_INDEX; | |
| 826 | 1700 data->byte_charpos = 0; |
| 428 | 1701 data->cursor_type = NO_CURSOR; |
| 1702 | |
| 1703 while (pb->data.p_string.len > 0) | |
| 1704 { | |
| 867 | 1705 data->ch = itext_ichar (pb->data.p_string.str); |
| 1706 add_failed = add_ichar_rune (data); | |
| 428 | 1707 |
| 1708 if (add_failed) | |
| 1709 { | |
| 1710 data->findex = old_findex; | |
| 826 | 1711 data->byte_charpos = byte_old_charpos; |
| 428 | 1712 goto oops_no_more_space; |
| 1713 } | |
| 1714 else | |
| 1715 { | |
| 1716 /* Complicated equivalent of ptr++, len-- */ | |
| 867 | 1717 Ibyte *oldpos = pb->data.p_string.str; |
| 1718 INC_IBYTEPTR (pb->data.p_string.str); | |
| 428 | 1719 pb->data.p_string.len -= pb->data.p_string.str - oldpos; |
| 1720 } | |
| 1721 } | |
| 1722 | |
| 1723 data->findex = old_findex; | |
| 1724 /* ##### FIXME FIXME FIXME -- Upon successful return from | |
| 826 | 1725 this function, data->byte_charpos is automatically incremented. |
| 428 | 1726 However, we don't want that to happen if we were adding |
| 1727 the minibuffer prompt. */ | |
| 1728 { | |
| 1729 struct buffer *buf = | |
| 1730 XBUFFER (WINDOW_BUFFER (XWINDOW (data->window))); | |
| 1731 /* #### Chuck fix this shit or I'm gonna scream! */ | |
| 826 | 1732 if (byte_old_charpos > BYTE_BUF_BEGV (buf)) |
| 4187 | 1733 data->byte_charpos = prev_bytebpos (buf, byte_old_charpos); |
| 1734 else | |
| 428 | 1735 /* #### is this correct? Does anyone know? |
| 1736 Does anyone care? Is this a cheesy hack or what? */ | |
| 4187 | 1737 data->byte_charpos = BYTE_BUF_BEGV (buf) - 1; |
| 428 | 1738 } |
| 1739 } | |
| 1740 break; | |
| 1741 case PROP_BLANK: | |
| 1742 { | |
| 1743 /* #### I think it's unnecessary and misleading to preserve | |
| 1744 the blank_width, as it implies that the value carries | |
| 1745 over from one rune to the next, which is wrong. */ | |
| 1746 int old_width = data->blank_width; | |
| 1747 face_index old_findex = data->findex; | |
| 1748 | |
| 1749 data->findex = pb->data.p_blank.findex; | |
| 1750 data->blank_width = pb->data.p_blank.width; | |
| 826 | 1751 data->byte_cursor_charpos = 0; |
| 428 | 1752 data->cursor_type = IGNORE_CURSOR; |
| 1753 | |
| 1754 if (data->pixpos + data->blank_width > data->max_pixpos) | |
| 1755 data->blank_width = data->max_pixpos - data->pixpos; | |
| 1756 | |
| 1757 /* We pass a bogus value of char_tab_width. It shouldn't | |
| 4187 | 1758 matter because unless something is really screwed up |
| 1759 this call won't cause that arg to be used. */ | |
| 428 | 1760 add_failed = add_blank_rune (data, XWINDOW (data->window), 0); |
| 1761 | |
| 1762 /* This can happen in the case where we have a tab which | |
| 4187 | 1763 is wider than the window. */ |
| 428 | 1764 if (data->blank_width != pb->data.p_blank.width) |
| 1765 { | |
| 1766 pb->data.p_blank.width -= data->blank_width; | |
| 1767 add_failed = ADD_FAILED; | |
| 1768 } | |
| 1769 | |
| 1770 data->findex = old_findex; | |
| 1771 data->blank_width = old_width; | |
| 1772 | |
| 1773 if (add_failed) | |
| 1774 goto oops_no_more_space; | |
| 1775 } | |
| 1776 break; | |
| 1777 default: | |
| 2500 | 1778 ABORT (); |
| 428 | 1779 } |
| 1780 } | |
| 1781 | |
| 1782 oops_no_more_space: | |
| 1783 | |
| 826 | 1784 data->byte_cursor_charpos = byte_old_cursor_charpos; |
| 428 | 1785 data->cursor_type = old_cursor_type; |
| 1786 if (elt < Dynarr_length (*prop)) | |
| 1787 { | |
| 1788 Dynarr_delete_many (*prop, 0, elt); | |
| 1789 return *prop; | |
| 1790 } | |
| 1791 else | |
| 1792 { | |
| 1793 Dynarr_free (*prop); | |
| 1794 return NULL; | |
| 1795 } | |
| 1796 } | |
| 1797 | |
| 3025 | 1798 /* Add `text' layout glyphs at position POS_TYPE that are contained to |
| 428 | 1799 the display block, but add all other types to the appropriate list |
| 1800 of the display line. They will be added later by different | |
| 1801 routines. */ | |
| 1802 | |
| 1803 static prop_block_dynarr * | |
| 1804 add_glyph_rune (pos_data *data, struct glyph_block *gb, int pos_type, | |
| 1805 int allow_cursor, struct glyph_cachel *cachel) | |
| 1806 { | |
| 1807 struct window *w = XWINDOW (data->window); | |
| 1808 | |
| 440 | 1809 /* If window faces changed, and glyph instance is text, then |
| 1810 glyph sizes might have changed too */ | |
| 1811 invalidate_glyph_geometry_maybe (gb->glyph, w); | |
| 1812 | |
| 442 | 1813 /* This makes sure the glyph is in the cachels. |
| 1814 | |
| 1815 #### We do this to make sure the glyph is in the glyph cachels, | |
| 1816 so that the dirty flag can be reset after redisplay has | |
| 1817 finished. We should do this some other way, maybe by iterating | |
| 1818 over the window cache of subwindows. */ | |
| 1819 get_glyph_cachel_index (w, gb->glyph); | |
| 1820 | |
| 428 | 1821 /* A nil extent indicates a special glyph (ex. truncator). */ |
| 1822 if (NILP (gb->extent) | |
| 1823 || (pos_type == BEGIN_GLYPHS && | |
| 1824 extent_begin_glyph_layout (XEXTENT (gb->extent)) == GL_TEXT) | |
| 1825 || (pos_type == END_GLYPHS && | |
| 442 | 1826 extent_end_glyph_layout (XEXTENT (gb->extent)) == GL_TEXT) |
| 1827 || pos_type == LEFT_GLYPHS || pos_type == RIGHT_GLYPHS) | |
| 428 | 1828 { |
| 1829 struct rune rb; | |
| 1830 int width; | |
| 1831 int xoffset = 0; | |
| 1832 int ascent, descent; | |
| 1833 Lisp_Object baseline; | |
| 1834 Lisp_Object face; | |
| 442 | 1835 Lisp_Object instance; |
| 1836 face_index findex; | |
| 819 | 1837 prop_block_dynarr *retval = 0; |
| 428 | 1838 |
| 1839 if (cachel) | |
| 1840 width = cachel->width; | |
| 1841 else | |
| 438 | 1842 width = glyph_width (gb->glyph, data->window); |
| 428 | 1843 |
| 1844 if (!width) | |
| 1845 return NULL; | |
| 1846 | |
| 1847 if (data->start_col || data->start_col_xoffset) | |
| 1848 { | |
| 1849 int glyph_char_width = width / space_width (w); | |
| 1850 | |
| 1851 /* If we still have not fully scrolled horizontally after | |
| 4187 | 1852 taking into account the width of the glyph, subtract its |
| 1853 width and return. */ | |
| 428 | 1854 if (glyph_char_width < data->start_col) |
| 1855 { | |
| 1856 data->start_col -= glyph_char_width; | |
| 1857 return NULL; | |
| 1858 } | |
| 1859 else if (glyph_char_width == data->start_col) | |
| 1860 width = 0; | |
| 1861 else | |
| 1862 { | |
| 1863 xoffset = space_width (w) * data->start_col; | |
| 1864 width -= xoffset; | |
| 1865 | |
| 1866 /* #### Can this happen? */ | |
| 1867 if (width < 0) | |
| 1868 width = 0; | |
| 1869 } | |
| 1870 | |
| 1871 data->start_col = 0; | |
| 1872 retval = add_hscroll_rune (data); | |
| 1873 | |
| 1874 /* Could be caused by the handling of the hscroll rune. */ | |
| 1875 if (retval != NULL || !width) | |
| 1876 return retval; | |
| 1877 } | |
| 1878 else | |
| 1879 xoffset = 0; | |
| 1880 | |
| 1881 if (data->pixpos + width > data->max_pixpos) | |
| 1882 { | |
| 1883 /* If this is the first object we are attempting to add to | |
| 819 | 1884 the line then we ignore the horizontal_clip threshold. |
| 1885 Otherwise we will loop until the bottom of the window | |
| 1886 continually failing to add this glyph because it is wider | |
| 1887 than the window. We could alternatively just completely | |
| 1888 ignore the glyph and proceed from there but I think that | |
| 1889 this is a better solution. | |
| 4187 | 1890 |
| 819 | 1891 This does, however, create a different problem in that we |
| 1892 can end up adding the object to every single line, never | |
| 1893 getting any further - for instance an extent with a long | |
| 1894 start-glyph that covers multitple following | |
| 1895 characters. */ | |
| 428 | 1896 if (Dynarr_length (data->db->runes) |
| 1897 && data->max_pixpos - data->pixpos < horizontal_clip) | |
| 1898 return ADD_FAILED; | |
| 819 | 1899 else { |
| 1900 struct prop_block pb; | |
| 1901 | |
| 1902 /* We need to account for the width of the end-of-line | |
| 1903 glyph if there is nothing more in the line to display, | |
| 1904 since we will not display it in this instance. It seems | |
| 1905 kind of gross doing it here, but otherwise we have to | |
| 1906 search the runes in create_text_block(). */ | |
| 1907 if (data->ch == '\n') | |
| 1908 data->max_pixpos += data->end_glyph_width; | |
| 428 | 1909 width = data->max_pixpos - data->pixpos; |
| 819 | 1910 /* Add the glyph we are displaying, but clipping, to the |
| 1911 propagation data so that we don't try and do it | |
| 4187 | 1912 again. */ |
| 819 | 1913 retval = Dynarr_new (prop_block); |
| 1914 pb.type = PROP_GLYPH; | |
| 1915 pb.data.p_glyph.glyph = gb->glyph; | |
| 1916 pb.data.p_glyph.width = width; | |
| 1917 Dynarr_add (retval, pb); | |
| 1918 } | |
| 428 | 1919 } |
| 1920 | |
| 1921 if (cachel) | |
| 1922 { | |
| 1923 ascent = cachel->ascent; | |
| 1924 descent = cachel->descent; | |
| 1925 } | |
| 1926 else | |
| 1927 { | |
| 438 | 1928 ascent = glyph_ascent (gb->glyph, data->window); |
| 1929 descent = glyph_descent (gb->glyph, data->window); | |
| 428 | 1930 } |
| 1931 | |
| 1932 baseline = glyph_baseline (gb->glyph, data->window); | |
| 1933 | |
| 819 | 1934 rb.object.dglyph.descent = 0; /* Gets reset lower down, if it is known. */ |
| 1935 | |
| 428 | 1936 if (glyph_contrib_p (gb->glyph, data->window)) |
| 1937 { | |
| 1938 /* A pixmap that has not had a baseline explicitly set. Its | |
| 1939 contribution will be determined later. */ | |
| 1940 if (NILP (baseline)) | |
| 1941 { | |
| 1942 int height = ascent + descent; | |
| 819 | 1943 data->need_baseline_computation = 1; |
| 428 | 1944 data->max_pixmap_height = max (data->max_pixmap_height, height); |
| 1945 } | |
| 1946 | |
| 1947 /* A string so determine contribution normally. */ | |
| 1948 else if (EQ (baseline, Qt)) | |
| 1949 { | |
| 1950 data->new_ascent = max (data->new_ascent, ascent); | |
| 1951 data->new_descent = max (data->new_descent, descent); | |
| 1952 } | |
| 1953 | |
| 1954 /* A pixmap with an explicitly set baseline. We determine the | |
| 1955 contribution here. */ | |
| 1956 else if (INTP (baseline)) | |
| 1957 { | |
| 1958 int height = ascent + descent; | |
| 1959 int pix_ascent, pix_descent; | |
| 1960 | |
| 1961 pix_ascent = height * XINT (baseline) / 100; | |
| 1962 pix_descent = height - pix_ascent; | |
| 1963 | |
| 1964 data->new_ascent = max (data->new_ascent, pix_ascent); | |
| 1965 data->new_descent = max (data->new_descent, pix_descent); | |
| 819 | 1966 data->max_pixmap_height = max (data->max_pixmap_height, height); |
| 4187 | 1967 |
| 819 | 1968 rb.object.dglyph.descent = pix_descent; |
| 428 | 1969 } |
| 1970 | |
| 1971 /* Otherwise something is screwed up. */ | |
| 1972 else | |
| 2500 | 1973 ABORT (); |
| 428 | 1974 } |
| 1975 | |
| 1976 face = glyph_face (gb->glyph, data->window); | |
| 1977 if (NILP (face)) | |
| 442 | 1978 findex = data->findex; |
| 428 | 1979 else |
| 442 | 1980 findex = get_builtin_face_cache_index (w, face); |
| 1981 | |
| 1982 instance = glyph_image_instance (gb->glyph, data->window, | |
| 793 | 1983 ERROR_ME_DEBUG_WARN, 1); |
| 442 | 1984 if (TEXT_IMAGE_INSTANCEP (instance)) |
| 1985 { | |
| 1986 Lisp_Object string = XIMAGE_INSTANCE_TEXT_STRING (instance); | |
| 1987 face_index orig_findex = data->findex; | |
| 826 | 1988 Bytebpos orig_charpos = data->byte_charpos; |
| 1989 Bytebpos orig_start_col_enabled = data->byte_start_col_enabled; | |
| 442 | 1990 |
| 1991 data->findex = findex; | |
| 826 | 1992 data->byte_start_col_enabled = 0; |
| 442 | 1993 if (!allow_cursor) |
| 826 | 1994 data->byte_charpos = 0; |
| 867 | 1995 add_ibyte_string_runes (data, XSTRING_DATA (string), |
| 793 | 1996 XSTRING_LENGTH (string), 0, 1); |
| 442 | 1997 data->findex = orig_findex; |
| 826 | 1998 data->byte_charpos = orig_charpos; |
| 1999 data->byte_start_col_enabled = orig_start_col_enabled; | |
| 819 | 2000 return retval; |
| 442 | 2001 } |
| 2002 | |
| 2003 rb.findex = findex; | |
| 428 | 2004 rb.xpos = data->pixpos; |
| 2005 rb.width = width; | |
| 826 | 2006 rb.charpos = 0; /* glyphs are never "at" anywhere */ |
| 2007 if (data->byte_endpos) | |
| 428 | 2008 /* #### is this necessary at all? */ |
| 665 | 2009 rb.endpos = bytebpos_to_charbpos (XBUFFER (WINDOW_BUFFER (w)), |
| 826 | 2010 data->byte_endpos); |
| 428 | 2011 else |
| 4187 | 2012 rb.endpos = 0; |
| 428 | 2013 rb.type = RUNE_DGLYPH; |
| 2014 rb.object.dglyph.glyph = gb->glyph; | |
| 2015 rb.object.dglyph.extent = gb->extent; | |
| 2016 rb.object.dglyph.xoffset = xoffset; | |
| 819 | 2017 rb.object.dglyph.ascent = ascent; |
| 2018 rb.object.dglyph.yoffset = 0; /* Until we know better, assume that it has | |
| 2019 a normal (textual) baseline. */ | |
| 428 | 2020 |
| 2021 if (allow_cursor) | |
| 2022 { | |
| 826 | 2023 rb.charpos = bytebpos_to_charbpos (XBUFFER (WINDOW_BUFFER (w)), |
| 2024 data->byte_charpos); | |
| 428 | 2025 |
| 2026 if (data->cursor_type == CURSOR_ON) | |
| 2027 { | |
| 826 | 2028 if (data->byte_charpos == data->byte_cursor_charpos) |
| 428 | 2029 { |
| 2030 rb.cursor_type = CURSOR_ON; | |
| 2031 data->cursor_x = Dynarr_length (data->db->runes); | |
| 2032 } | |
| 2033 else | |
| 2034 rb.cursor_type = CURSOR_OFF; | |
| 2035 } | |
| 2036 else if (data->cursor_type == NEXT_CURSOR) | |
| 2037 { | |
| 2038 rb.cursor_type = CURSOR_ON; | |
| 2039 data->cursor_x = Dynarr_length (data->db->runes); | |
| 2040 data->cursor_type = NO_CURSOR; | |
| 2041 } | |
| 2042 else if (data->cursor_type == IGNORE_CURSOR) | |
| 2043 rb.cursor_type = IGNORE_CURSOR; | |
| 2044 else if (data->cursor_type == NO_CURSOR) | |
| 2045 rb.cursor_type = NO_CURSOR; | |
| 2046 else | |
| 2047 rb.cursor_type = CURSOR_OFF; | |
| 2048 } | |
| 2049 else | |
| 2050 rb.cursor_type = CURSOR_OFF; | |
| 2051 | |
| 2052 Dynarr_add (data->db->runes, rb); | |
| 2053 data->pixpos += width; | |
| 2054 | |
| 819 | 2055 return retval; |
| 428 | 2056 } |
| 2057 else | |
| 2058 { | |
| 2059 if (!NILP (glyph_face (gb->glyph, data->window))) | |
| 2060 gb->findex = | |
| 2061 get_builtin_face_cache_index (w, glyph_face (gb->glyph, | |
| 2062 data->window)); | |
| 2063 else | |
| 2064 gb->findex = data->findex; | |
| 2065 | |
| 2066 if (pos_type == BEGIN_GLYPHS) | |
| 2067 { | |
| 2068 if (!data->dl->left_glyphs) | |
| 2069 data->dl->left_glyphs = Dynarr_new (glyph_block); | |
| 2070 Dynarr_add (data->dl->left_glyphs, *gb); | |
| 2071 return NULL; | |
| 2072 } | |
| 2073 else if (pos_type == END_GLYPHS) | |
| 2074 { | |
| 2075 if (!data->dl->right_glyphs) | |
| 2076 data->dl->right_glyphs = Dynarr_new (glyph_block); | |
| 2077 Dynarr_add (data->dl->right_glyphs, *gb); | |
| 2078 return NULL; | |
| 2079 } | |
| 2080 else | |
| 2500 | 2081 ABORT (); /* there are no unknown types */ |
| 428 | 2082 } |
| 2083 | |
| 819 | 2084 return NULL; |
| 428 | 2085 } |
| 2086 | |
| 2087 /* Add all glyphs at position POS_TYPE that are contained in the given | |
| 2088 data. */ | |
| 2089 | |
| 2090 static prop_block_dynarr * | |
| 2091 add_glyph_runes (pos_data *data, int pos_type) | |
| 2092 { | |
| 2093 /* #### This still needs to handle the start_col parameter. Duh, Chuck, | |
| 2094 why didn't you just modify add_glyph_rune in the first place? */ | |
| 2095 int elt; | |
| 2096 glyph_block_dynarr *glyph_arr = (pos_type == BEGIN_GLYPHS | |
| 2097 ? data->ef->begin_glyphs | |
| 2098 : data->ef->end_glyphs); | |
| 2099 prop_block_dynarr *prop; | |
| 2100 | |
| 2101 for (elt = 0; elt < Dynarr_length (glyph_arr); elt++) | |
| 2102 { | |
| 2103 prop = add_glyph_rune (data, Dynarr_atp (glyph_arr, elt), pos_type, 0, | |
| 2104 0); | |
| 2105 | |
| 2106 if (prop) | |
| 2107 { | |
| 2108 /* #### Add some propagation information. */ | |
| 2109 return prop; | |
| 2110 } | |
| 2111 } | |
| 2112 | |
| 2113 Dynarr_reset (glyph_arr); | |
| 2114 | |
| 2115 return NULL; | |
| 2116 } | |
| 2117 | |
| 2118 /* Given a position for a buffer in a window, ensure that the given | |
| 2119 display line DL accurately represents the text on a line starting | |
| 2120 at the given position. | |
| 2121 | |
| 826 | 2122 NOTE NOTE NOTE NOTE: This function works with and returns Bytebpos's. |
| 428 | 2123 You must do appropriate conversion. */ |
| 2124 | |
| 665 | 2125 static Bytebpos |
| 428 | 2126 create_text_block (struct window *w, struct display_line *dl, |
| 826 | 2127 Bytebpos byte_start_pos, prop_block_dynarr **prop, |
| 428 | 2128 int type) |
| 2129 { | |
| 2130 struct frame *f = XFRAME (w->frame); | |
| 2131 struct buffer *b = XBUFFER (w->buffer); | |
| 2132 struct device *d = XDEVICE (f->device); | |
| 2133 | |
| 2134 pos_data data; | |
| 2135 | |
| 2136 /* Don't display anything in the minibuffer if this window is not on | |
| 2137 a selected frame. We consider all other windows to be active | |
| 2138 minibuffers as it simplifies the coding. */ | |
| 2139 int active_minibuffer = (!MINI_WINDOW_P (w) || | |
| 2140 (f == device_selected_frame (d)) || | |
| 2141 is_surrogate_for_selected_frame (f)); | |
| 2142 | |
| 2143 int truncate_win = window_truncation_on (w); | |
| 2144 | |
| 2145 /* If the buffer's value of selective_display is an integer then | |
| 2146 only lines that start with less than selective_display columns of | |
| 2147 space will be displayed. If selective_display is t then all text | |
| 2148 after a ^M is invisible. */ | |
| 2149 int selective = (INTP (b->selective_display) | |
| 2150 ? XINT (b->selective_display) | |
| 434 | 2151 : (!NILP (b->selective_display) ? -1 : 0)); |
| 428 | 2152 |
| 2153 /* The variable ctl-arrow allows the user to specify what characters | |
| 2154 can actually be displayed and which octal should be used for. | |
| 2155 #### This variable should probably have some rethought done to | |
| 2156 it. | |
| 2157 | |
| 2367 | 2158 See also |
| 2159 | |
| 2160 (Info-goto-node "(internals)Future Work -- Display Tables") | |
| 2161 | |
| 2162 */ | |
| 867 | 2163 Ichar printable_min = (CHAR_OR_CHAR_INTP (b->ctl_arrow) |
| 428 | 2164 ? XCHAR_OR_CHAR_INT (b->ctl_arrow) |
| 2165 : ((EQ (b->ctl_arrow, Qt) || EQ (b->ctl_arrow, Qnil)) | |
| 2166 ? 255 : 160)); | |
| 2167 | |
| 2168 Lisp_Object face_dt, window_dt; | |
| 2169 | |
| 2170 /* The text display block for this display line. */ | |
| 2171 struct display_block *db = get_display_block_from_line (dl, TEXT); | |
| 2172 | |
| 2173 /* The first time through the main loop we need to force the glyph | |
| 2174 data to be updated. */ | |
| 2175 int initial = 1; | |
| 2176 | |
| 2177 /* Apparently the new extent_fragment_update returns an end position | |
| 2178 equal to the position passed in if there are no more runs to be | |
| 2179 displayed. */ | |
| 2180 int no_more_frags = 0; | |
| 2181 | |
| 2182 Lisp_Object synch_minibuffers_value = | |
| 2183 symbol_value_in_buffer (Qsynchronize_minibuffers, w->buffer); | |
| 2184 | |
| 2185 dl->used_prop_data = 0; | |
| 2186 dl->num_chars = 0; | |
| 442 | 2187 dl->line_continuation = 0; |
| 428 | 2188 |
| 2189 xzero (data); | |
| 2190 data.ef = extent_fragment_new (w->buffer, f); | |
| 2191 | |
| 2192 /* These values are used by all of the rune addition routines. We add | |
| 2193 them to this structure for ease of passing. */ | |
| 2194 data.d = d; | |
| 793 | 2195 data.window = wrap_window (w); |
| 428 | 2196 data.string = Qnil; |
| 2197 data.db = db; | |
| 2198 data.dl = dl; | |
| 2199 | |
| 826 | 2200 data.byte_charpos = byte_start_pos; |
| 428 | 2201 data.pixpos = dl->bounds.left_in; |
| 2202 data.last_charset = Qunbound; | |
| 2203 data.last_findex = DEFAULT_INDEX; | |
| 2204 data.result_str = Qnil; | |
| 2205 | |
| 2206 /* Set the right boundary adjusting it to take into account any end | |
| 2207 glyph. Save the width of the end glyph for later use. */ | |
| 2208 data.max_pixpos = dl->bounds.right_in; | |
| 2209 if (truncate_win) | |
| 819 | 2210 data.end_glyph_width = GLYPH_CACHEL_WIDTH (w, TRUN_GLYPH_INDEX); |
| 428 | 2211 else |
| 819 | 2212 data.end_glyph_width = GLYPH_CACHEL_WIDTH (w, CONT_GLYPH_INDEX); |
| 2213 data.max_pixpos -= data.end_glyph_width; | |
| 428 | 2214 |
| 2215 if (cursor_in_echo_area && MINI_WINDOW_P (w) && echo_area_active (f)) | |
| 2216 { | |
| 826 | 2217 data.byte_cursor_charpos = BYTE_BUF_ZV (b); |
| 428 | 2218 data.cursor_type = CURSOR_ON; |
| 2219 } | |
| 2220 else if (MINI_WINDOW_P (w) && !active_minibuffer) | |
| 2221 data.cursor_type = NO_CURSOR; | |
| 2222 else if (w == XWINDOW (FRAME_SELECTED_WINDOW (f)) && | |
| 2223 EQ(DEVICE_CONSOLE(d), Vselected_console) && | |
| 2224 d == XDEVICE(CONSOLE_SELECTED_DEVICE(XCONSOLE(DEVICE_CONSOLE(d))))&& | |
| 2225 f == XFRAME(DEVICE_SELECTED_FRAME(d))) | |
| 2226 { | |
| 826 | 2227 data.byte_cursor_charpos = BYTE_BUF_PT (b); |
| 428 | 2228 data.cursor_type = CURSOR_ON; |
| 2229 } | |
| 2230 else if (w == XWINDOW (FRAME_SELECTED_WINDOW (f))) | |
| 2231 { | |
| 826 | 2232 data.byte_cursor_charpos = byte_marker_position (w->pointm[type]); |
| 428 | 2233 data.cursor_type = CURSOR_ON; |
| 2234 } | |
| 2235 else | |
| 2236 data.cursor_type = NO_CURSOR; | |
| 2237 data.cursor_x = -1; | |
| 2238 | |
| 2239 data.start_col = w->hscroll; | |
| 2240 data.start_col_xoffset = w->left_xoffset; | |
| 826 | 2241 data.byte_start_col_enabled = (w->hscroll ? byte_start_pos : 0); |
| 428 | 2242 data.hscroll_glyph_width_adjust = 0; |
| 2243 | |
| 2244 /* We regenerate the line from the very beginning. */ | |
| 2245 Dynarr_reset (db->runes); | |
| 2246 | |
| 2247 /* Why is this less than or equal and not just less than? If the | |
| 2248 starting position is already equal to the maximum we can't add | |
| 2249 anything else, right? Wrong. We might still have a newline to | |
| 2250 add. A newline can use the room allocated for an end glyph since | |
| 2251 if we add it we know we aren't going to be adding any end | |
| 2252 glyph. */ | |
| 2253 | |
| 2254 /* #### Chuck -- I think this condition should be while (1). | |
| 2255 Otherwise if (e.g.) there is one begin-glyph and one end-glyph | |
| 2256 and the begin-glyph ends exactly at the end of the window, the | |
| 2257 end-glyph and text might not be displayed. while (1) ensures | |
| 2258 that the loop terminates only when either (a) there is | |
| 2259 propagation data or (b) the end-of-line or end-of-buffer is hit. | |
| 2260 | |
| 2261 #### Also I think you need to ensure that the operation | |
| 2262 "add begin glyphs; add end glyphs; add text" is atomic and | |
| 2263 can't get interrupted in the middle. If you run off the end | |
| 2264 of the line during that operation, then you keep accumulating | |
| 2265 propagation data until you're done. Otherwise, if the (e.g.) | |
| 2266 there's a begin glyph at a particular position and attempting | |
| 2267 to display that glyph results in window-end being hit and | |
| 2268 propagation data being generated, then the character at that | |
| 2269 position won't be displayed. | |
| 2270 | |
| 2271 #### See also the comment after the end of this loop, below. | |
| 2272 */ | |
| 2273 while (data.pixpos <= data.max_pixpos | |
| 2274 && (active_minibuffer || !NILP (synch_minibuffers_value))) | |
| 2275 { | |
| 2276 /* #### This check probably should not be necessary. */ | |
| 826 | 2277 if (data.byte_charpos > BYTE_BUF_ZV (b)) |
| 428 | 2278 { |
| 2279 /* #### urk! More of this lossage! */ | |
| 826 | 2280 data.byte_charpos--; |
| 428 | 2281 goto done; |
| 2282 } | |
| 2283 | |
| 2284 /* If selective display was an integer and we aren't working on | |
| 4187 | 2285 a continuation line then find the next line we are actually |
| 2286 supposed to display. */ | |
| 428 | 2287 if (selective > 0 |
| 826 | 2288 && (data.byte_charpos == BYTE_BUF_BEGV (b) |
| 2289 || BUF_FETCH_CHAR (b, prev_bytebpos (b, data.byte_charpos)) == '\n')) | |
| 2290 { | |
| 2291 while (byte_spaces_at_point (b, data.byte_charpos) >= selective) | |
| 428 | 2292 { |
| 826 | 2293 data.byte_charpos = |
| 2294 byte_find_next_newline_no_quit (b, data.byte_charpos, 1); | |
| 2295 if (data.byte_charpos >= BYTE_BUF_ZV (b)) | |
| 428 | 2296 { |
| 826 | 2297 data.byte_charpos = BYTE_BUF_ZV (b); |
| 428 | 2298 goto done; |
| 2299 } | |
| 2300 } | |
| 2301 } | |
| 2302 | |
| 2303 /* Check for face changes. */ | |
| 826 | 2304 if (initial || (!no_more_frags && data.byte_charpos == data.ef->end)) |
| 428 | 2305 { |
| 819 | 2306 Lisp_Object last_glyph = Qnil; |
| 2307 | |
| 2308 /* Deal with glyphs that we have already displayed. The | |
| 2309 theory is that if we end up with a PROP_GLYPH in the | |
| 2310 propagation data then we are clipping the glyph and there | |
| 2311 can be no propagation data before that point. The theory | |
| 2312 works because we always recalculate the extent-fragments | |
| 2313 for propagated data, we never actually propagate the | |
| 2314 fragments that still need to be displayed. */ | |
| 4967 | 2315 if (*prop && Dynarr_begin (*prop)->type == PROP_GLYPH) |
| 2316 { | |
| 2317 last_glyph = Dynarr_begin (*prop)->data.p_glyph.glyph; | |
| 819 | 2318 Dynarr_free (*prop); |
| 2319 *prop = 0; | |
| 2320 } | |
| 428 | 2321 /* Now compute the face and begin/end-glyph information. */ |
| 2322 data.findex = | |
| 665 | 2323 /* Remember that the extent-fragment routines deal in Bytebpos's. */ |
| 826 | 2324 extent_fragment_update (w, data.ef, data.byte_charpos, last_glyph); |
| 428 | 2325 |
| 2326 get_display_tables (w, data.findex, &face_dt, &window_dt); | |
| 2327 | |
| 826 | 2328 if (data.byte_charpos == data.ef->end) |
| 428 | 2329 no_more_frags = 1; |
| 2330 } | |
| 2331 initial = 0; | |
| 2332 | |
| 2333 /* Determine what is next to be displayed. We first handle any | |
| 4187 | 2334 glyphs returned by glyphs_at_charbpos. If there are no glyphs to |
| 2335 display then we determine what to do based on the character at the | |
| 2336 current buffer position. */ | |
| 428 | 2337 |
| 2338 /* If the current position is covered by an invisible extent, do | |
| 4187 | 2339 nothing (except maybe add some ellipses). |
| 428 | 2340 |
| 2341 #### The behavior of begin and end-glyphs at the edge of an | |
| 2342 invisible extent should be investigated further. This is | |
| 2343 fairly low priority though. */ | |
| 2344 if (data.ef->invisible) | |
| 2345 { | |
| 2346 /* #### Chuck, perhaps you could look at this code? I don't | |
| 2347 really know what I'm doing. */ | |
| 2348 if (*prop) | |
| 2349 { | |
| 2350 Dynarr_free (*prop); | |
| 2351 *prop = 0; | |
| 2352 } | |
| 2353 | |
| 2354 /* The extent fragment code only sets this when we should | |
| 2355 really display the ellipses. It makes sure the ellipses | |
| 2356 don't get displayed more than once in a row. */ | |
| 2357 if (data.ef->invisible_ellipses) | |
| 2358 { | |
| 2359 struct glyph_block gb; | |
| 2360 | |
| 2361 data.ef->invisible_ellipses_already_displayed = 1; | |
| 2362 data.ef->invisible_ellipses = 0; | |
| 2363 gb.extent = Qnil; | |
| 2364 gb.glyph = Vinvisible_text_glyph; | |
| 2365 *prop = add_glyph_rune (&data, &gb, BEGIN_GLYPHS, 0, | |
| 2366 GLYPH_CACHEL (w, INVIS_GLYPH_INDEX)); | |
| 2367 /* Perhaps they shouldn't propagate if the very next thing | |
| 2368 is to display a newline (for compatibility with | |
| 2369 selective-display-ellipses)? Maybe that's too | |
| 2370 abstruse. */ | |
| 2371 if (*prop) | |
| 2372 goto done; | |
| 2373 } | |
| 2374 | |
| 2375 /* If point is in an invisible region we place it on the | |
| 4187 | 2376 next visible character. */ |
| 428 | 2377 if (data.cursor_type == CURSOR_ON |
| 826 | 2378 && data.byte_charpos == data.byte_cursor_charpos) |
| 428 | 2379 { |
| 2380 data.cursor_type = NEXT_CURSOR; | |
| 2381 } | |
| 2382 | |
| 2383 /* #### What if we we're dealing with a display table? */ | |
| 2384 if (data.start_col) | |
| 2385 data.start_col--; | |
| 2386 | |
| 826 | 2387 if (data.byte_charpos == BYTE_BUF_ZV (b)) |
| 428 | 2388 goto done; |
| 2389 else | |
| 826 | 2390 INC_BYTEBPOS (b, data.byte_charpos); |
| 428 | 2391 } |
| 2392 | |
| 2393 /* If there is propagation data, then it represents the current | |
| 819 | 2394 buffer position being displayed. Add them and advance the |
| 2395 position counter. This might also add the minibuffer | |
| 2396 prompt. */ | |
| 428 | 2397 else if (*prop) |
| 2398 { | |
| 2399 dl->used_prop_data = 1; | |
| 2400 *prop = add_propagation_runes (prop, &data); | |
| 2401 | |
| 2402 if (*prop) | |
| 2403 goto done; /* gee, a really narrow window */ | |
| 826 | 2404 else if (data.byte_charpos == BYTE_BUF_ZV (b)) |
| 428 | 2405 goto done; |
| 826 | 2406 else if (data.byte_charpos < BYTE_BUF_BEGV (b)) |
| 428 | 2407 /* #### urk urk urk! Aborts are not very fun! Fix this please! */ |
| 826 | 2408 data.byte_charpos = BYTE_BUF_BEGV (b); |
| 428 | 2409 else |
| 826 | 2410 INC_BYTEBPOS (b, data.byte_charpos); |
| 428 | 2411 } |
| 2412 | |
| 2413 /* If there are end glyphs, add them to the line. These are | |
| 2414 the end glyphs for the previous run of text. We add them | |
| 2415 here rather than doing them at the end of handling the | |
| 2416 previous run so that glyphs at the beginning and end of | |
| 2417 a line are handled correctly. */ | |
| 819 | 2418 else if (Dynarr_length (data.ef->end_glyphs) > 0 |
| 2419 || Dynarr_length (data.ef->begin_glyphs) > 0) | |
| 2420 { | |
| 2421 glyph_block_dynarr* tmpglyphs = 0; | |
| 2422 /* #### I think this is safe, but could be wrong. */ | |
| 826 | 2423 data.ch = BYTE_BUF_FETCH_CHAR (b, data.byte_charpos); |
| 819 | 2424 |
| 4187 | 2425 if (Dynarr_length (data.ef->end_glyphs) > 0) |
| 819 | 2426 { |
| 2427 *prop = add_glyph_runes (&data, END_GLYPHS); | |
| 2428 tmpglyphs = data.ef->end_glyphs; | |
| 2429 } | |
| 2430 | |
| 2431 /* If there are begin glyphs, add them to the line. */ | |
| 4187 | 2432 if (!*prop && Dynarr_length (data.ef->begin_glyphs) > 0) |
| 819 | 2433 { |
| 2434 *prop = add_glyph_runes (&data, BEGIN_GLYPHS); | |
| 2435 tmpglyphs = data.ef->begin_glyphs; | |
| 2436 } | |
| 2437 | |
| 4187 | 2438 if (*prop) |
| 819 | 2439 { |
| 2440 /* If we just clipped a glyph and we are at the end of a | |
| 2441 line and there are more glyphs to display then do | |
| 2442 appropriate processing to not get a continuation | |
| 2443 glyph. */ | |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
2444 if (*prop != ADD_FAILED |
|
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
2445 && Dynarr_begin (*prop)->type == PROP_GLYPH |
| 819 | 2446 && data.ch == '\n') |
| 4187 | 2447 { |
| 819 | 2448 /* If there are no more glyphs then do the normal |
| 4187 | 2449 processing. |
| 819 | 2450 |
| 2451 #### This doesn't actually work if the same glyph is | |
| 2452 present more than once in the block. To solve | |
| 2453 this we would have to carry the index around | |
| 2454 which might be problematic since the fragment is | |
| 2455 recalculated for each line. */ | |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
2456 if (EQ (Dynarr_lastp (tmpglyphs)->glyph, |
|
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
2457 Dynarr_begin (*prop)->data.p_glyph.glyph)) |
| 819 | 2458 { |
| 2459 Dynarr_free (*prop); | |
| 2460 *prop = 0; | |
| 2461 } | |
| 2462 else { | |
| 2463 data.blank_width = DEVMETH (d, eol_cursor_width, ()); | |
| 867 | 2464 add_ichar_rune (&data); /* discard prop data. */ |
| 819 | 2465 goto done; |
| 2466 } | |
| 2467 } | |
| 2468 else | |
| 2469 goto done; | |
| 2470 } | |
| 428 | 2471 } |
| 2472 | |
| 2473 /* If at end-of-buffer, we've already processed begin and | |
| 2474 end-glyphs at this point and there's no text to process, | |
| 2475 so we're done. */ | |
| 826 | 2476 else if (data.byte_charpos == BYTE_BUF_ZV (b)) |
| 428 | 2477 goto done; |
| 2478 | |
| 2479 else | |
| 2480 { | |
| 2481 Lisp_Object entry = Qnil; | |
| 2482 /* Get the character at the current buffer position. */ | |
| 826 | 2483 data.ch = BYTE_BUF_FETCH_CHAR (b, data.byte_charpos); |
| 428 | 2484 if (!NILP (face_dt) || !NILP (window_dt)) |
| 2485 entry = display_table_entry (data.ch, face_dt, window_dt); | |
| 2486 | |
| 2487 /* If there is a display table entry for it, hand it off to | |
| 4187 | 2488 add_disp_table_entry_runes and let it worry about it. */ |
| 428 | 2489 if (!NILP (entry) && !EQ (entry, make_char (data.ch))) |
| 2490 { | |
| 2491 *prop = add_disp_table_entry_runes (&data, entry); | |
| 2492 | |
| 2493 if (*prop) | |
| 2494 goto done; | |
| 2495 } | |
| 2496 | |
| 2497 /* Check if we have hit a newline character. If so, add a marker | |
| 4187 | 2498 to the line and end this loop. */ |
| 428 | 2499 else if (data.ch == '\n') |
| 2500 { | |
| 2501 /* We aren't going to be adding an end glyph so give its | |
| 4187 | 2502 space back in order to make sure that the cursor can |
| 2503 fit. */ | |
| 819 | 2504 data.max_pixpos += data.end_glyph_width; |
| 428 | 2505 |
| 2506 if (selective > 0 | |
| 826 | 2507 && (byte_spaces_at_point |
| 2508 (b, next_bytebpos (b, data.byte_charpos)) | |
| 428 | 2509 >= selective)) |
| 2510 { | |
| 2511 if (!NILP (b->selective_display_ellipses)) | |
| 2512 { | |
| 2513 struct glyph_block gb; | |
| 2514 | |
| 2515 gb.extent = Qnil; | |
| 2516 gb.glyph = Vinvisible_text_glyph; | |
| 2517 add_glyph_rune (&data, &gb, BEGIN_GLYPHS, 0, | |
| 2518 GLYPH_CACHEL (w, INVIS_GLYPH_INDEX)); | |
| 2519 } | |
| 2520 else | |
| 2521 { | |
| 2522 /* Cheesy, cheesy, cheesy. We mark the end of the | |
| 2523 line with a special "character rune" whose width | |
| 2524 is the EOL cursor width and whose character is | |
| 2525 the non-printing character '\n'. */ | |
| 2526 data.blank_width = DEVMETH (d, eol_cursor_width, ()); | |
| 867 | 2527 *prop = add_ichar_rune (&data); |
| 428 | 2528 } |
| 2529 | |
| 826 | 2530 /* We need to set data.byte_charpos to the start of the |
| 4187 | 2531 next visible region in order to make this line |
| 2532 appear to contain all of the invisible area. | |
| 2533 Otherwise, the line cache won't work | |
| 2534 correctly. */ | |
| 826 | 2535 INC_BYTEBPOS (b, data.byte_charpos); |
| 2536 while (byte_spaces_at_point (b, data.byte_charpos) >= selective) | |
| 428 | 2537 { |
| 826 | 2538 data.byte_charpos = |
| 2539 byte_find_next_newline_no_quit (b, data.byte_charpos, 1); | |
| 2540 if (data.byte_charpos >= BYTE_BUF_ZV (b)) | |
| 428 | 2541 { |
| 826 | 2542 data.byte_charpos = BYTE_BUF_ZV (b); |
| 428 | 2543 break; |
| 2544 } | |
| 2545 } | |
| 826 | 2546 if (BYTE_BUF_FETCH_CHAR |
| 2547 (b, prev_bytebpos (b, data.byte_charpos)) == '\n') | |
| 2548 DEC_BYTEBPOS (b, data.byte_charpos); | |
| 428 | 2549 } |
| 2550 else | |
| 2551 { | |
| 2552 data.blank_width = DEVMETH (d, eol_cursor_width, ()); | |
| 867 | 2553 *prop = add_ichar_rune (&data); |
| 428 | 2554 } |
| 2555 | |
| 2556 goto done; | |
| 2557 } | |
| 2558 | |
| 2559 /* If the current character is ^M, and selective display is | |
| 4187 | 2560 enabled, then add the invisible-text-glyph if |
| 2561 selective-display-ellipses is set. In any case, this | |
| 2562 line is done. */ | |
| 428 | 2563 else if (data.ch == (('M' & 037)) && selective == -1) |
| 2564 { | |
| 826 | 2565 Bytebpos byte_next_charpos; |
| 428 | 2566 |
| 2567 /* Find the buffer position at the end of the line. */ | |
| 826 | 2568 byte_next_charpos = |
| 2569 byte_find_next_newline_no_quit (b, data.byte_charpos, 1); | |
| 2570 if (BYTE_BUF_FETCH_CHAR (b, prev_bytebpos (b, byte_next_charpos)) | |
| 428 | 2571 == '\n') |
| 826 | 2572 DEC_BYTEBPOS (b, byte_next_charpos); |
| 428 | 2573 |
| 2574 /* If the cursor is somewhere in the elided text make | |
| 4187 | 2575 sure that the cursor gets drawn appropriately. */ |
| 428 | 2576 if (data.cursor_type == CURSOR_ON |
| 826 | 2577 && (data.byte_cursor_charpos >= data.byte_charpos && |
| 2578 data.byte_cursor_charpos < byte_next_charpos)) | |
| 428 | 2579 { |
| 2580 data.cursor_type = NEXT_CURSOR; | |
| 2581 } | |
| 2582 | |
| 2583 /* We won't be adding a truncation or continuation glyph | |
| 4187 | 2584 so give up the room allocated for them. */ |
| 819 | 2585 data.max_pixpos += data.end_glyph_width; |
| 428 | 2586 |
| 2587 if (!NILP (b->selective_display_ellipses)) | |
| 2588 { | |
| 2589 /* We don't propagate anything from the invisible | |
| 4187 | 2590 text glyph if it fails to fit. This is |
| 2591 intentional. */ | |
| 428 | 2592 struct glyph_block gb; |
| 2593 | |
| 2594 gb.extent = Qnil; | |
| 2595 gb.glyph = Vinvisible_text_glyph; | |
| 2596 add_glyph_rune (&data, &gb, BEGIN_GLYPHS, 1, | |
| 2597 GLYPH_CACHEL (w, INVIS_GLYPH_INDEX)); | |
| 2598 } | |
| 2599 | |
| 2600 /* Set the buffer position to the end of the line. We | |
| 4187 | 2601 need to do this before potentially adding a newline |
| 2602 so that the cursor flag will get set correctly (if | |
| 2603 needed). */ | |
| 826 | 2604 data.byte_charpos = byte_next_charpos; |
| 428 | 2605 |
| 2606 if (NILP (b->selective_display_ellipses) | |
| 826 | 2607 || data.byte_cursor_charpos == byte_next_charpos) |
| 428 | 2608 { |
| 2609 /* We have to at least add a newline character so | |
| 4187 | 2610 that the cursor shows up properly. */ |
| 428 | 2611 data.ch = '\n'; |
| 2612 data.blank_width = DEVMETH (d, eol_cursor_width, ()); | |
| 2613 data.findex = DEFAULT_INDEX; | |
| 2614 data.start_col = 0; | |
| 2615 data.start_col_xoffset = 0; | |
| 826 | 2616 data.byte_start_col_enabled = 0; |
| 428 | 2617 |
| 867 | 2618 add_ichar_rune (&data); |
| 428 | 2619 } |
| 2620 | |
| 2621 /* This had better be a newline but doing it this way | |
| 4187 | 2622 we'll see obvious incorrect results if it isn't. No |
| 2623 need to abort here. */ | |
| 826 | 2624 data.ch = BYTE_BUF_FETCH_CHAR (b, data.byte_charpos); |
| 428 | 2625 |
| 2626 goto done; | |
| 2627 } | |
| 2628 | |
| 2629 /* If the current character is considered to be printable, then | |
| 4187 | 2630 just add it. */ |
| 428 | 2631 else if (data.ch >= printable_min) |
| 2632 { | |
| 867 | 2633 *prop = add_ichar_rune (&data); |
| 428 | 2634 if (*prop) |
| 2635 goto done; | |
| 2636 } | |
| 2637 | |
| 2638 /* If the current character is a tab, determine the next tab | |
| 4187 | 2639 starting position and add a blank rune which extends from the |
| 2640 current pixel position to that starting position. */ | |
| 428 | 2641 else if (data.ch == '\t') |
| 2642 { | |
| 2643 int tab_start_pixpos = data.pixpos; | |
| 2644 int next_tab_start; | |
| 2645 int char_tab_width; | |
| 2646 int prop_width = 0; | |
| 2647 | |
| 2648 if (data.start_col > 1) | |
| 434 | 2649 tab_start_pixpos -= (space_width (w) * (data.start_col - 1)) |
| 428 | 2650 + data.start_col_xoffset; |
| 2651 | |
| 2652 next_tab_start = | |
| 2653 next_tab_position (w, tab_start_pixpos, | |
| 2654 dl->bounds.left_in + | |
| 2655 data.hscroll_glyph_width_adjust); | |
| 2656 if (next_tab_start > data.max_pixpos) | |
| 2657 { | |
| 2658 prop_width = next_tab_start - data.max_pixpos; | |
| 2659 next_tab_start = data.max_pixpos; | |
| 2660 } | |
| 2661 data.blank_width = next_tab_start - data.pixpos; | |
| 2662 char_tab_width = | |
| 2663 (next_tab_start - tab_start_pixpos) / space_width (w); | |
| 2664 | |
| 2665 *prop = add_blank_rune (&data, w, char_tab_width); | |
| 2666 | |
| 2667 /* add_blank_rune is only supposed to be called with | |
| 4187 | 2668 sizes guaranteed to fit in the available space. */ |
| 428 | 2669 assert (!(*prop)); |
| 2670 | |
| 2671 if (prop_width) | |
| 2672 { | |
| 2673 struct prop_block pb; | |
| 2674 *prop = Dynarr_new (prop_block); | |
| 2675 | |
| 2676 pb.type = PROP_BLANK; | |
| 2677 pb.data.p_blank.width = prop_width; | |
| 2678 pb.data.p_blank.findex = data.findex; | |
| 2679 Dynarr_add (*prop, pb); | |
| 2680 | |
| 2681 goto done; | |
| 2682 } | |
| 2683 } | |
| 2684 | |
| 2685 /* If character is a control character, pass it off to | |
| 4187 | 2686 add_control_char_runes. |
| 428 | 2687 |
| 2688 The is_*() routines have undefined results on | |
| 2689 arguments outside of the range [-1, 255]. (This | |
| 2690 often bites people who carelessly use `char' instead | |
| 2691 of `unsigned char'.) | |
| 2692 */ | |
| 867 | 2693 else if (data.ch < 0x100 && iscntrl ((Ibyte) data.ch)) |
| 428 | 2694 { |
| 2695 *prop = add_control_char_runes (&data, b); | |
| 2696 | |
| 2697 if (*prop) | |
| 2698 goto done; | |
| 2699 } | |
| 2700 | |
| 2701 /* If the character is above the ASCII range and we have not | |
| 4187 | 2702 already handled it, then print it as an octal number. */ |
| 428 | 2703 else if (data.ch >= 0200) |
| 2704 { | |
| 2705 *prop = add_octal_runes (&data); | |
| 2706 | |
| 2707 if (*prop) | |
| 2708 goto done; | |
| 2709 } | |
| 2710 | |
| 2711 /* Assume the current character is considered to be printable, | |
| 4187 | 2712 then just add it. */ |
| 428 | 2713 else |
| 2714 { | |
| 867 | 2715 *prop = add_ichar_rune (&data); |
| 428 | 2716 if (*prop) |
| 2717 goto done; | |
| 2718 } | |
| 2719 | |
| 826 | 2720 INC_BYTEBPOS (b, data.byte_charpos); |
| 428 | 2721 } |
| 2722 } | |
| 2723 | |
| 2724 done: | |
| 2725 | |
| 2726 /* Determine the starting point of the next line if we did not hit the | |
| 2727 end of the buffer. */ | |
| 826 | 2728 if (data.byte_charpos < BYTE_BUF_ZV (b) |
| 428 | 2729 && (active_minibuffer || !NILP (synch_minibuffers_value))) |
| 2730 { | |
| 2731 /* #### This check is not correct. If the line terminated | |
| 2732 due to a begin-glyph or end-glyph hitting window-end, then | |
| 826 | 2733 data.ch will not point to the character at data.byte_charpos. If |
| 428 | 2734 you make the two changes mentioned at the top of this loop, |
| 2735 you should be able to say '(if (*prop))'. That should also | |
| 826 | 2736 make it possible to eliminate the data.byte_charpos < BYTE_BUF_ZV (b) |
| 428 | 2737 check. */ |
| 2738 | |
| 2739 /* The common case is that the line ended because we hit a newline. | |
| 4187 | 2740 In that case, the next character is just the next buffer |
| 2741 position. */ | |
| 428 | 2742 if (data.ch == '\n') |
| 2743 { | |
| 2744 /* If data.start_col_enabled is still true, then the window is | |
| 4187 | 2745 scrolled far enough so that nothing on this line is visible. |
| 2746 We need to stick a truncation glyph at the beginning of the | |
| 2747 line in that case unless the line is completely blank. */ | |
| 826 | 2748 if (data.byte_start_col_enabled) |
| 428 | 2749 { |
| 2750 if (data.cursor_type == CURSOR_ON) | |
| 2751 { | |
| 826 | 2752 if (data.byte_cursor_charpos >= byte_start_pos |
| 2753 && data.byte_cursor_charpos <= data.byte_charpos) | |
| 2754 data.byte_cursor_charpos = data.byte_charpos; | |
| 428 | 2755 } |
| 2756 data.findex = DEFAULT_INDEX; | |
| 2757 data.start_col = 0; | |
| 826 | 2758 data.byte_start_col_enabled = 0; |
| 2759 | |
| 2760 if (data.byte_charpos != byte_start_pos) | |
| 428 | 2761 { |
| 2762 struct glyph_block gb; | |
| 2763 | |
| 2764 gb.extent = Qnil; | |
| 2765 gb.glyph = Vhscroll_glyph; | |
| 2766 add_glyph_rune (&data, &gb, BEGIN_GLYPHS, 0, | |
| 2767 GLYPH_CACHEL (w, HSCROLL_GLYPH_INDEX)); | |
| 2768 } | |
| 2769 else | |
| 2770 { | |
| 2771 /* This duplicates code down below to add a newline to | |
| 4187 | 2772 the end of an otherwise empty line.*/ |
| 428 | 2773 data.ch = '\n'; |
| 2774 data.blank_width = DEVMETH (d, eol_cursor_width, ()); | |
| 2775 | |
| 867 | 2776 add_ichar_rune (&data); |
| 428 | 2777 } |
| 2778 } | |
| 2779 | |
| 826 | 2780 INC_BYTEBPOS (b, data.byte_charpos); |
| 428 | 2781 } |
| 2782 | |
| 2783 /* Otherwise we have a buffer line which cannot fit on one display | |
| 4187 | 2784 line. */ |
| 428 | 2785 else |
| 2786 { | |
| 2787 struct glyph_block gb; | |
| 2788 struct glyph_cachel *cachel; | |
| 2789 | |
| 2790 /* If the line is to be truncated then we actually have to look | |
| 4187 | 2791 for the next newline. We also add the end-of-line glyph which |
| 2792 we know will fit because we adjusted the right border before | |
| 2793 we starting laying out the line. */ | |
| 819 | 2794 data.max_pixpos += data.end_glyph_width; |
| 428 | 2795 data.findex = DEFAULT_INDEX; |
| 2796 gb.extent = Qnil; | |
| 2797 | |
| 2798 if (truncate_win) | |
| 2799 { | |
| 826 | 2800 Bytebpos byte_pos; |
| 428 | 2801 |
| 2802 /* Now find the start of the next line. */ | |
| 826 | 2803 byte_pos = byte_find_next_newline_no_quit (b, data.byte_charpos, 1); |
| 428 | 2804 |
| 2805 /* If the cursor is past the truncation line then we | |
| 4187 | 2806 make it appear on the truncation glyph. If we've hit |
| 2807 the end of the buffer then we also make the cursor | |
| 2808 appear unless eob is immediately preceded by a | |
| 2809 newline. In that case the cursor should actually | |
| 2810 appear on the next line. */ | |
| 428 | 2811 if (data.cursor_type == CURSOR_ON |
| 826 | 2812 && data.byte_cursor_charpos >= data.byte_charpos |
| 2813 && (data.byte_cursor_charpos < byte_pos || | |
| 2814 (byte_pos == BYTE_BUF_ZV (b) | |
| 2815 && (byte_pos == BYTE_BUF_BEGV (b) | |
| 2816 || (BYTE_BUF_FETCH_CHAR (b, prev_bytebpos (b, byte_pos)) | |
| 428 | 2817 != '\n'))))) |
| 826 | 2818 data.byte_cursor_charpos = byte_pos; |
| 428 | 2819 else |
| 2820 data.cursor_type = NO_CURSOR; | |
| 2821 | |
| 826 | 2822 data.byte_charpos = byte_pos; |
| 428 | 2823 gb.glyph = Vtruncation_glyph; |
| 2824 cachel = GLYPH_CACHEL (w, TRUN_GLYPH_INDEX); | |
| 2825 } | |
| 2826 else | |
| 2827 { | |
| 2828 /* The cursor can never be on the continuation glyph. */ | |
| 2829 data.cursor_type = NO_CURSOR; | |
| 2830 | |
| 826 | 2831 /* data.byte_charpos is already at the start of the next line. */ |
| 428 | 2832 |
| 442 | 2833 dl->line_continuation = 1; |
| 428 | 2834 gb.glyph = Vcontinuation_glyph; |
| 2835 cachel = GLYPH_CACHEL (w, CONT_GLYPH_INDEX); | |
| 2836 } | |
| 2837 | |
| 442 | 2838 add_glyph_rune (&data, &gb, BEGIN_GLYPHS, 0, cachel); |
| 428 | 2839 |
| 826 | 2840 if (truncate_win && data.byte_charpos == BYTE_BUF_ZV (b) |
| 2841 && BYTE_BUF_FETCH_CHAR (b, prev_bytebpos (b, BYTE_BUF_ZV (b))) != '\n') | |
| 428 | 2842 /* #### Damn this losing shit. */ |
| 826 | 2843 data.byte_charpos++; |
| 428 | 2844 } |
| 2845 } | |
| 2846 else if ((active_minibuffer || !NILP (synch_minibuffers_value)) | |
| 826 | 2847 && (!echo_area_active (f) || data.byte_charpos == BYTE_BUF_ZV (b))) |
| 428 | 2848 { |
| 2849 /* We need to add a marker to the end of the line since there is no | |
| 4187 | 2850 newline character in order for the cursor to get drawn. We label |
| 2851 it as a newline so that it gets handled correctly by the | |
| 2852 whitespace routines below. */ | |
| 428 | 2853 |
| 2854 data.ch = '\n'; | |
| 2855 data.blank_width = DEVMETH (d, eol_cursor_width, ()); | |
| 2856 data.findex = DEFAULT_INDEX; | |
| 2857 data.start_col = 0; | |
| 2858 data.start_col_xoffset = 0; | |
| 826 | 2859 data.byte_start_col_enabled = 0; |
| 428 | 2860 |
| 2861 data.max_pixpos += data.blank_width; | |
| 867 | 2862 add_ichar_rune (&data); |
| 428 | 2863 data.max_pixpos -= data.blank_width; |
| 2864 | |
| 2865 /* #### urk! Chuck, this shit is bad news. Going around | |
| 2866 manipulating invalid positions is guaranteed to result in | |
| 2867 trouble sooner or later. */ | |
| 826 | 2868 data.byte_charpos = BYTE_BUF_ZV (b) + 1; |
| 428 | 2869 } |
| 2870 | |
| 2871 /* Calculate left whitespace boundary. */ | |
| 2872 { | |
| 2873 int elt = 0; | |
| 2874 | |
| 2875 /* Whitespace past a newline is considered right whitespace. */ | |
| 2876 while (elt < Dynarr_length (db->runes)) | |
| 2877 { | |
| 2878 struct rune *rb = Dynarr_atp (db->runes, elt); | |
| 2879 | |
| 2880 if ((rb->type == RUNE_CHAR && rb->object.chr.ch == ' ') | |
| 2881 || rb->type == RUNE_BLANK) | |
| 2882 { | |
| 2883 dl->bounds.left_white += rb->width; | |
| 2884 elt++; | |
| 2885 } | |
| 2886 else | |
| 2887 elt = Dynarr_length (db->runes); | |
| 2888 } | |
| 2889 } | |
| 2890 | |
| 2891 /* Calculate right whitespace boundary. */ | |
| 2892 { | |
| 2893 int elt = Dynarr_length (db->runes) - 1; | |
| 2894 int done = 0; | |
| 2895 | |
| 2896 while (!done && elt >= 0) | |
| 2897 { | |
| 2898 struct rune *rb = Dynarr_atp (db->runes, elt); | |
| 2899 | |
| 2900 if (!(rb->type == RUNE_CHAR && rb->object.chr.ch < 0x100 | |
| 2901 && isspace (rb->object.chr.ch)) | |
| 2902 && !rb->type == RUNE_BLANK) | |
| 2903 { | |
| 2904 dl->bounds.right_white = rb->xpos + rb->width; | |
| 2905 done = 1; | |
| 2906 } | |
| 2907 | |
| 2908 elt--; | |
| 2909 | |
| 2910 } | |
| 2911 | |
| 2912 /* The line is blank so everything is considered to be right | |
| 2913 whitespace. */ | |
| 2914 if (!done) | |
| 2915 dl->bounds.right_white = dl->bounds.left_in; | |
| 2916 } | |
| 2917 | |
| 2918 /* Set the display blocks bounds. */ | |
| 2919 db->start_pos = dl->bounds.left_in; | |
| 2920 if (Dynarr_length (db->runes)) | |
| 2921 { | |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
2922 struct rune *rb = Dynarr_lastp (db->runes); |
| 428 | 2923 |
| 2924 db->end_pos = rb->xpos + rb->width; | |
| 2925 } | |
| 2926 else | |
| 2927 db->end_pos = dl->bounds.right_white; | |
| 2928 | |
| 819 | 2929 calculate_baseline (&data); |
| 428 | 2930 |
| 2931 dl->ascent = data.new_ascent; | |
| 2932 dl->descent = data.new_descent; | |
| 2933 | |
| 2934 { | |
| 2935 unsigned short ascent = (unsigned short) XINT (w->minimum_line_ascent); | |
| 2936 | |
| 2937 if (dl->ascent < ascent) | |
| 2938 dl->ascent = ascent; | |
| 2939 } | |
| 2940 { | |
| 2941 unsigned short descent = (unsigned short) XINT (w->minimum_line_descent); | |
| 2942 | |
| 2943 if (dl->descent < descent) | |
| 2944 dl->descent = descent; | |
| 2945 } | |
| 2946 | |
| 819 | 2947 calculate_yoffset (dl, db); |
| 2948 | |
| 428 | 2949 dl->cursor_elt = data.cursor_x; |
| 2950 /* #### lossage lossage lossage! Fix this shit! */ | |
| 826 | 2951 if (data.byte_charpos > BYTE_BUF_ZV (b)) |
| 2952 dl->end_charpos = BUF_ZV (b); | |
| 428 | 2953 else |
| 826 | 2954 dl->end_charpos = bytebpos_to_charbpos (b, data.byte_charpos) - 1; |
| 428 | 2955 if (truncate_win) |
| 826 | 2956 data.dl->num_chars = column_at_point (b, dl->end_charpos, 0); |
| 428 | 2957 else |
| 2958 /* This doesn't correctly take into account tabs and control | |
| 2959 characters but if the window isn't being truncated then this | |
| 2960 value isn't going to end up being used anyhow. */ | |
| 826 | 2961 data.dl->num_chars = dl->end_charpos - dl->charpos; |
| 428 | 2962 |
| 2963 /* #### handle horizontally scrolled line with text none of which | |
| 2964 was actually laid out. */ | |
| 2965 | |
| 2966 /* #### handle any remainder of overlay arrow */ | |
| 2967 | |
| 2968 if (*prop == ADD_FAILED) | |
| 2969 *prop = NULL; | |
| 2970 | |
| 2971 if (truncate_win && *prop) | |
| 2972 { | |
| 2973 Dynarr_free (*prop); | |
| 2974 *prop = NULL; | |
| 2975 } | |
| 2976 | |
| 2977 extent_fragment_delete (data.ef); | |
| 2978 | |
| 2979 /* #### If we started at EOB, then make sure we return a value past | |
| 2980 it so that regenerate_window will exit properly. This is bogus. | |
| 2981 The main loop should get fixed so that it isn't necessary to call | |
| 2982 this function if we are already at EOB. */ | |
| 2983 | |
| 826 | 2984 if (data.byte_charpos == BYTE_BUF_ZV (b) && byte_start_pos == BYTE_BUF_ZV (b)) |
| 2985 return data.byte_charpos + 1; /* Yuck! */ | |
| 428 | 2986 else |
| 826 | 2987 return data.byte_charpos; |
| 428 | 2988 } |
| 2989 | |
| 2990 /* Display the overlay arrow at the beginning of the given line. */ | |
| 2991 | |
| 2992 static int | |
| 2993 create_overlay_glyph_block (struct window *w, struct display_line *dl) | |
| 2994 { | |
| 2995 struct frame *f = XFRAME (w->frame); | |
| 2996 struct device *d = XDEVICE (f->device); | |
| 2997 pos_data data; | |
| 2998 | |
| 2999 /* If Voverlay_arrow_string isn't valid then just fail silently. */ | |
| 3000 if (!STRINGP (Voverlay_arrow_string) && !GLYPHP (Voverlay_arrow_string)) | |
| 3001 return 0; | |
| 3002 | |
| 3003 xzero (data); | |
| 3004 data.ef = NULL; | |
| 3005 data.d = d; | |
| 793 | 3006 data.window = wrap_window (w); |
| 428 | 3007 data.db = get_display_block_from_line (dl, OVERWRITE); |
| 3008 data.dl = dl; | |
| 3009 data.pixpos = dl->bounds.left_in; | |
| 3010 data.max_pixpos = dl->bounds.right_in; | |
| 3011 data.cursor_type = NO_CURSOR; | |
| 3012 data.cursor_x = -1; | |
| 3013 data.findex = DEFAULT_INDEX; | |
| 3014 data.last_charset = Qunbound; | |
| 3015 data.last_findex = DEFAULT_INDEX; | |
| 3016 data.result_str = Qnil; | |
| 3017 data.string = Qnil; | |
| 3018 | |
| 3019 Dynarr_reset (data.db->runes); | |
| 3020 | |
| 3021 if (STRINGP (Voverlay_arrow_string)) | |
| 3022 { | |
| 867 | 3023 add_ibyte_string_runes |
| 428 | 3024 (&data, |
| 3025 XSTRING_DATA (Voverlay_arrow_string), | |
| 3026 XSTRING_LENGTH (Voverlay_arrow_string), | |
| 793 | 3027 1, 0); |
| 428 | 3028 } |
| 3029 else if (GLYPHP (Voverlay_arrow_string)) | |
| 3030 { | |
| 3031 struct glyph_block gb; | |
| 3032 | |
| 3033 gb.glyph = Voverlay_arrow_string; | |
| 3034 gb.extent = Qnil; | |
| 3035 add_glyph_rune (&data, &gb, BEGIN_GLYPHS, 0, 0); | |
| 3036 } | |
| 4187 | 3037 |
| 428 | 3038 if (data.max_pixmap_height) |
| 3039 { | |
| 3040 int height = data.new_ascent + data.new_descent; | |
| 3041 int pix_ascent, pix_descent; | |
| 4187 | 3042 |
| 428 | 3043 pix_descent = data.max_pixmap_height * data.new_descent / height; |
| 3044 pix_ascent = data.max_pixmap_height - pix_descent; | |
| 819 | 3045 calculate_baseline (&data); |
| 428 | 3046 |
| 3047 data.new_ascent = max (data.new_ascent, pix_ascent); | |
| 3048 data.new_descent = max (data.new_descent, pix_descent); | |
| 3049 } | |
| 3050 | |
| 3051 dl->ascent = data.new_ascent; | |
| 3052 dl->descent = data.new_descent; | |
| 3053 | |
| 3054 data.db->start_pos = dl->bounds.left_in; | |
| 3055 data.db->end_pos = data.pixpos; | |
| 3056 | |
| 819 | 3057 calculate_yoffset (dl, data.db); |
| 3058 | |
| 428 | 3059 return data.pixpos - dl->bounds.left_in; |
| 3060 } | |
| 3061 | |
| 3062 /* Add a type of glyph to a margin display block. */ | |
| 3063 | |
| 3064 static int | |
| 3065 add_margin_runes (struct display_line *dl, struct display_block *db, int start, | |
| 3066 int count, enum glyph_layout layout, int side, Lisp_Object window) | |
| 3067 { | |
| 3068 glyph_block_dynarr *gbd = (side == LEFT_GLYPHS | |
| 3069 ? dl->left_glyphs | |
| 3070 : dl->right_glyphs); | |
| 3071 int elt, end; | |
| 3072 int reverse; | |
| 442 | 3073 struct window *w = XWINDOW (window); |
| 3074 struct frame *f = XFRAME (w->frame); | |
| 3075 struct device *d = XDEVICE (f->device); | |
| 3076 pos_data data; | |
| 3077 | |
| 3078 xzero (data); | |
| 3079 data.d = d; | |
| 3080 data.window = window; | |
| 3081 data.db = db; | |
| 3082 data.dl = dl; | |
| 3083 data.pixpos = start; | |
| 3084 data.cursor_type = NO_CURSOR; | |
| 3085 data.cursor_x = -1; | |
| 3086 data.last_charset = Qunbound; | |
| 3087 data.last_findex = DEFAULT_INDEX; | |
| 3088 data.result_str = Qnil; | |
| 3089 data.string = Qnil; | |
| 3090 data.new_ascent = dl->ascent; | |
| 3091 data.new_descent = dl->descent; | |
| 428 | 3092 |
| 3093 if ((layout == GL_WHITESPACE && side == LEFT_GLYPHS) | |
| 3094 || (layout == GL_INSIDE_MARGIN && side == RIGHT_GLYPHS)) | |
| 3095 { | |
| 3096 reverse = 1; | |
| 3097 elt = Dynarr_length (gbd) - 1; | |
| 3098 end = 0; | |
| 3099 } | |
| 3100 else | |
| 3101 { | |
| 3102 reverse = 0; | |
| 3103 elt = 0; | |
| 3104 end = Dynarr_length (gbd); | |
| 3105 } | |
| 3106 | |
| 3107 while (count && ((!reverse && elt < end) || (reverse && elt >= end))) | |
| 3108 { | |
| 3109 struct glyph_block *gb = Dynarr_atp (gbd, elt); | |
| 3110 | |
| 3111 if (NILP (gb->extent)) | |
| 2500 | 3112 ABORT (); /* these should have been handled in add_glyph_rune */ |
| 428 | 3113 |
| 3114 if (gb->active && | |
| 3115 ((side == LEFT_GLYPHS && | |
| 3116 extent_begin_glyph_layout (XEXTENT (gb->extent)) == layout) | |
| 3117 || (side == RIGHT_GLYPHS && | |
| 3118 extent_end_glyph_layout (XEXTENT (gb->extent)) == layout))) | |
| 3119 { | |
| 442 | 3120 data.findex = gb->findex; |
| 3121 data.max_pixpos = data.pixpos + gb->width; | |
| 3122 add_glyph_rune (&data, gb, side, 0, NULL); | |
| 428 | 3123 count--; |
| 3124 gb->active = 0; | |
| 3125 } | |
| 3126 | |
| 3127 (reverse ? elt-- : elt++); | |
| 3128 } | |
| 3129 | |
| 819 | 3130 calculate_baseline (&data); |
| 442 | 3131 |
| 3132 dl->ascent = data.new_ascent; | |
| 3133 dl->descent = data.new_descent; | |
| 3134 | |
| 819 | 3135 calculate_yoffset (dl, data.db); |
| 3136 | |
| 442 | 3137 return data.pixpos; |
| 428 | 3138 } |
| 3139 | |
| 3140 /* Add a blank to a margin display block. */ | |
| 3141 | |
| 3142 static void | |
| 2286 | 3143 add_margin_blank (struct display_line *UNUSED (dl), struct display_block *db, |
| 428 | 3144 struct window *w, int xpos, int width, int side) |
| 3145 { | |
| 3146 struct rune rb; | |
| 3147 | |
| 3148 rb.findex = (side == LEFT_GLYPHS | |
| 3149 ? get_builtin_face_cache_index (w, Vleft_margin_face) | |
| 3150 : get_builtin_face_cache_index (w, Vright_margin_face)); | |
| 3151 rb.xpos = xpos; | |
| 3152 rb.width = width; | |
| 826 | 3153 rb.charpos = -1; |
| 428 | 3154 rb.endpos = 0; |
| 3155 rb.type = RUNE_BLANK; | |
| 3156 rb.cursor_type = CURSOR_OFF; | |
| 3157 | |
| 3158 Dynarr_add (db->runes, rb); | |
| 3159 } | |
| 3160 | |
| 3161 /* Display glyphs in the left outside margin, left inside margin and | |
| 3162 left whitespace area. */ | |
| 3163 | |
| 3164 static void | |
| 3165 create_left_glyph_block (struct window *w, struct display_line *dl, | |
| 3166 int overlay_width) | |
| 3167 { | |
| 3168 Lisp_Object window; | |
| 3169 | |
| 3170 int use_overflow = (NILP (w->use_left_overflow) ? 0 : 1); | |
| 3171 int elt, end_xpos; | |
| 3172 int out_end, in_out_start, in_in_end, white_out_start, white_in_start; | |
| 3173 int out_cnt, in_out_cnt, in_in_cnt, white_out_cnt, white_in_cnt; | |
| 3174 int left_in_start = dl->bounds.left_in; | |
| 3175 int left_in_end = dl->bounds.left_in + overlay_width; | |
| 3176 | |
| 3177 struct display_block *odb, *idb; | |
| 3178 | |
| 793 | 3179 window = wrap_window (w); |
| 428 | 3180 |
| 3181 /* We have to add the glyphs to the line in the order outside, | |
| 3182 inside, whitespace. However the precedence dictates that we | |
| 3183 determine how many will fit in the reverse order. */ | |
| 3184 | |
| 3185 /* Determine how many whitespace glyphs we can display and where | |
| 3186 they should start. */ | |
| 3187 white_in_start = dl->bounds.left_white; | |
| 3188 white_out_start = left_in_start; | |
| 3189 white_out_cnt = white_in_cnt = 0; | |
| 3190 elt = 0; | |
| 3191 | |
| 3192 while (elt < Dynarr_length (dl->left_glyphs)) | |
| 3193 { | |
| 3194 struct glyph_block *gb = Dynarr_atp (dl->left_glyphs, elt); | |
| 3195 | |
| 3196 if (NILP (gb->extent)) | |
| 2500 | 3197 ABORT (); /* these should have been handled in add_glyph_rune */ |
| 428 | 3198 |
| 3199 if (extent_begin_glyph_layout (XEXTENT (gb->extent)) == GL_WHITESPACE) | |
| 3200 { | |
| 3201 int width; | |
| 3202 | |
| 438 | 3203 width = glyph_width (gb->glyph, window); |
| 428 | 3204 |
| 3205 if (white_in_start - width >= left_in_end) | |
| 3206 { | |
| 3207 white_in_cnt++; | |
| 3208 white_in_start -= width; | |
| 3209 gb->width = width; | |
| 3210 gb->active = 1; | |
| 3211 } | |
| 3212 else if (use_overflow | |
| 3213 && (white_out_start - width > dl->bounds.left_out)) | |
| 3214 { | |
| 3215 white_out_cnt++; | |
| 3216 white_out_start -= width; | |
| 3217 gb->width = width; | |
| 3218 gb->active = 1; | |
| 3219 } | |
| 3220 else | |
| 3221 gb->active = 0; | |
| 3222 } | |
| 3223 | |
| 3224 elt++; | |
| 3225 } | |
| 3226 | |
| 3227 /* Determine how many inside margin glyphs we can display and where | |
| 3228 they should start. The inside margin glyphs get whatever space | |
| 3229 is left after the whitespace glyphs have been displayed. These | |
| 3230 are tricky to calculate since if we decide to use the overflow | |
| 3231 area we basically have to start over. So for these we build up a | |
| 3232 list of just the inside margin glyphs and manipulate it to | |
| 3233 determine the needed info. */ | |
| 3234 { | |
| 3235 glyph_block_dynarr *ib; | |
| 3236 int avail_in, avail_out; | |
| 3237 int done = 0; | |
| 3238 int marker = 0; | |
| 3239 int used_in, used_out; | |
| 3240 | |
| 3241 elt = 0; | |
| 3242 used_in = used_out = 0; | |
| 3243 ib = Dynarr_new (glyph_block); | |
| 3244 while (elt < Dynarr_length (dl->left_glyphs)) | |
| 3245 { | |
| 3246 struct glyph_block *gb = Dynarr_atp (dl->left_glyphs, elt); | |
| 3247 | |
| 3248 if (NILP (gb->extent)) | |
| 2500 | 3249 ABORT (); /* these should have been handled in add_glyph_rune */ |
| 428 | 3250 |
| 3251 if (extent_begin_glyph_layout (XEXTENT (gb->extent)) == | |
| 3252 GL_INSIDE_MARGIN) | |
| 3253 { | |
| 438 | 3254 gb->width = glyph_width (gb->glyph, window); |
| 428 | 3255 used_in += gb->width; |
| 3256 Dynarr_add (ib, *gb); | |
| 3257 } | |
| 3258 | |
| 3259 elt++; | |
| 3260 } | |
| 3261 | |
| 3262 if (white_out_cnt) | |
| 3263 avail_in = 0; | |
| 3264 else | |
| 3265 { | |
| 3266 avail_in = white_in_start - left_in_end; | |
| 3267 if (avail_in < 0) | |
| 3268 avail_in = 0; | |
| 3269 } | |
| 3270 | |
| 3271 if (!use_overflow) | |
| 3272 avail_out = 0; | |
| 3273 else | |
| 3274 avail_out = white_out_start - dl->bounds.left_out; | |
| 3275 | |
| 3276 marker = 0; | |
| 3277 while (!done && marker < Dynarr_length (ib)) | |
| 3278 { | |
| 3279 int width = Dynarr_atp (ib, marker)->width; | |
| 3280 | |
| 3281 /* If everything now fits in the available inside margin | |
| 4187 | 3282 space, we're done. */ |
| 428 | 3283 if (used_in <= avail_in) |
| 3284 done = 1; | |
| 3285 else | |
| 3286 { | |
| 3287 /* Otherwise see if we have room to move a glyph to the | |
| 4187 | 3288 outside. */ |
| 428 | 3289 if (used_out + width <= avail_out) |
| 3290 { | |
| 3291 used_out += width; | |
| 3292 used_in -= width; | |
| 3293 } | |
| 3294 else | |
| 3295 done = 1; | |
| 3296 } | |
| 3297 | |
| 3298 if (!done) | |
| 3299 marker++; | |
| 3300 } | |
| 3301 | |
| 3302 /* At this point we now know that everything from marker on goes in | |
| 3303 the inside margin and everything before it goes in the outside | |
| 3304 margin. The stuff going into the outside margin is guaranteed | |
| 3305 to fit, but we may have to trim some stuff from the inside. */ | |
| 3306 | |
| 3307 in_in_end = left_in_end; | |
| 3308 in_out_start = white_out_start; | |
| 3309 in_out_cnt = in_in_cnt = 0; | |
| 3310 | |
| 3311 Dynarr_free (ib); | |
| 3312 elt = 0; | |
| 3313 while (elt < Dynarr_length (dl->left_glyphs)) | |
| 3314 { | |
| 3315 struct glyph_block *gb = Dynarr_atp (dl->left_glyphs, elt); | |
| 3316 | |
| 3317 if (NILP (gb->extent)) | |
| 2500 | 3318 ABORT (); /* these should have been handled in add_glyph_rune */ |
| 428 | 3319 |
| 3320 if (extent_begin_glyph_layout (XEXTENT (gb->extent)) == | |
| 3321 GL_INSIDE_MARGIN) | |
| 3322 { | |
| 438 | 3323 int width = glyph_width (gb->glyph, window); |
| 428 | 3324 |
| 3325 if (used_out) | |
| 3326 { | |
| 3327 in_out_cnt++; | |
| 3328 in_out_start -= width; | |
| 3329 gb->width = width; | |
| 3330 gb->active = 1; | |
| 3331 used_out -= width; | |
| 3332 } | |
| 3333 else if (in_in_end + width < white_in_start) | |
| 3334 { | |
| 3335 in_in_cnt++; | |
| 3336 in_in_end += width; | |
| 3337 gb->width = width; | |
| 3338 gb->active = 1; | |
| 3339 } | |
| 3340 else | |
| 3341 gb->active = 0; | |
| 3342 } | |
| 3343 | |
| 3344 elt++; | |
| 3345 } | |
| 3346 } | |
| 3347 | |
| 3348 /* Determine how many outside margin glyphs we can display. They | |
| 3349 always start at the left outside margin and can only use the | |
| 3350 outside margin space. */ | |
| 3351 out_end = dl->bounds.left_out; | |
| 3352 out_cnt = 0; | |
| 3353 elt = 0; | |
| 3354 | |
| 3355 while (elt < Dynarr_length (dl->left_glyphs)) | |
| 3356 { | |
| 3357 struct glyph_block *gb = Dynarr_atp (dl->left_glyphs, elt); | |
| 3358 | |
| 3359 if (NILP (gb->extent)) | |
| 2500 | 3360 ABORT (); /* these should have been handled in add_glyph_rune */ |
| 428 | 3361 |
| 3362 if (extent_begin_glyph_layout (XEXTENT (gb->extent)) == | |
| 3363 GL_OUTSIDE_MARGIN) | |
| 3364 { | |
| 438 | 3365 int width = glyph_width (gb->glyph, window); |
| 428 | 3366 |
| 3367 if (out_end + width <= in_out_start) | |
| 3368 { | |
| 3369 out_cnt++; | |
| 3370 out_end += width; | |
| 3371 gb->width = width; | |
| 3372 gb->active = 1; | |
| 3373 } | |
| 3374 else | |
| 3375 gb->active = 0; | |
| 3376 } | |
| 3377 | |
| 3378 elt++; | |
| 3379 } | |
| 3380 | |
| 3381 /* Now that we know where everything goes, we add the glyphs as | |
| 3382 runes to the appropriate display blocks. */ | |
| 3383 if (out_cnt || in_out_cnt || white_out_cnt) | |
| 3384 { | |
| 3385 odb = get_display_block_from_line (dl, LEFT_OUTSIDE_MARGIN); | |
| 3386 odb->start_pos = dl->bounds.left_out; | |
| 3387 /* #### We should stop adding a blank to account for the space | |
| 4187 | 3388 between the end of the glyphs and the margin and instead set |
| 3389 this accordingly. */ | |
| 428 | 3390 odb->end_pos = dl->bounds.left_in; |
| 3391 Dynarr_reset (odb->runes); | |
| 3392 } | |
| 3393 else | |
| 3394 odb = 0; | |
| 3395 | |
| 3396 if (in_in_cnt || white_in_cnt) | |
| 3397 { | |
| 3398 idb = get_display_block_from_line (dl, LEFT_INSIDE_MARGIN); | |
| 3399 idb->start_pos = dl->bounds.left_in; | |
| 3400 /* #### See above comment for odb->end_pos */ | |
| 3401 idb->end_pos = dl->bounds.left_white; | |
| 3402 Dynarr_reset (idb->runes); | |
| 3403 } | |
| 3404 else | |
| 3405 idb = 0; | |
| 3406 | |
| 3407 /* First add the outside margin glyphs. */ | |
| 3408 if (out_cnt) | |
| 3409 end_xpos = add_margin_runes (dl, odb, dl->bounds.left_out, out_cnt, | |
| 3410 GL_OUTSIDE_MARGIN, LEFT_GLYPHS, window); | |
| 3411 else | |
| 3412 end_xpos = dl->bounds.left_out; | |
| 3413 | |
| 3414 /* There may be blank space between the outside margin glyphs and | |
| 3415 the inside margin glyphs. If so, add a blank. */ | |
| 3416 if (in_out_cnt && (in_out_start - end_xpos)) | |
| 3417 { | |
| 3418 add_margin_blank (dl, odb, w, end_xpos, in_out_start - end_xpos, | |
| 3419 LEFT_GLYPHS); | |
| 3420 } | |
| 3421 | |
| 3422 /* Next add the inside margin glyphs which are actually in the | |
| 3423 outside margin. */ | |
| 3424 if (in_out_cnt) | |
| 3425 { | |
| 3426 end_xpos = add_margin_runes (dl, odb, in_out_start, in_out_cnt, | |
| 3427 GL_INSIDE_MARGIN, LEFT_GLYPHS, window); | |
| 3428 } | |
| 3429 | |
| 3430 /* If we didn't add any inside margin glyphs to the outside margin, | |
| 3431 but are adding whitespace glyphs, then we need to add a blank | |
| 3432 here. */ | |
| 3433 if (!in_out_cnt && white_out_cnt && (white_out_start - end_xpos)) | |
| 3434 { | |
| 3435 add_margin_blank (dl, odb, w, end_xpos, white_out_start - end_xpos, | |
| 3436 LEFT_GLYPHS); | |
| 3437 } | |
| 3438 | |
| 3439 /* Next add the whitespace margin glyphs which are actually in the | |
| 3440 outside margin. */ | |
| 3441 if (white_out_cnt) | |
| 3442 { | |
| 3443 end_xpos = add_margin_runes (dl, odb, white_out_start, white_out_cnt, | |
| 3444 GL_WHITESPACE, LEFT_GLYPHS, window); | |
| 3445 } | |
| 3446 | |
| 3447 /* We take care of clearing between the end of the glyphs and the | |
| 3448 start of the inside margin for lines which have glyphs. */ | |
| 3449 if (odb && (left_in_start - end_xpos)) | |
| 3450 { | |
| 3451 add_margin_blank (dl, odb, w, end_xpos, left_in_start - end_xpos, | |
| 3452 LEFT_GLYPHS); | |
| 3453 } | |
| 3454 | |
| 3455 /* Next add the inside margin glyphs which are actually in the | |
| 3456 inside margin. */ | |
| 3457 if (in_in_cnt) | |
| 3458 { | |
| 3459 end_xpos = add_margin_runes (dl, idb, left_in_end, in_in_cnt, | |
| 3460 GL_INSIDE_MARGIN, LEFT_GLYPHS, window); | |
| 3461 } | |
| 3462 else | |
| 3463 end_xpos = left_in_end; | |
| 3464 | |
| 3465 /* Make sure that the area between the end of the inside margin | |
| 3466 glyphs and the whitespace glyphs is cleared. */ | |
| 3467 if (idb && (white_in_start - end_xpos > 0)) | |
| 3468 { | |
| 3469 add_margin_blank (dl, idb, w, end_xpos, white_in_start - end_xpos, | |
| 3470 LEFT_GLYPHS); | |
| 3471 } | |
| 3472 | |
| 3473 /* Next add the whitespace margin glyphs which are actually in the | |
| 3474 inside margin. */ | |
| 3475 if (white_in_cnt) | |
| 3476 { | |
| 3477 add_margin_runes (dl, idb, white_in_start, white_in_cnt, GL_WHITESPACE, | |
| 3478 LEFT_GLYPHS, window); | |
| 3479 } | |
| 3480 | |
| 3481 /* Whitespace glyphs always end right next to the text block so | |
| 3482 there is nothing we have to make sure is cleared after them. */ | |
| 3483 } | |
| 3484 | |
| 3485 /* Display glyphs in the right outside margin, right inside margin and | |
| 3486 right whitespace area. */ | |
| 3487 | |
| 3488 static void | |
| 3489 create_right_glyph_block (struct window *w, struct display_line *dl) | |
| 3490 { | |
| 3491 Lisp_Object window; | |
| 3492 | |
| 3493 int use_overflow = (NILP (w->use_right_overflow) ? 0 : 1); | |
| 3494 int elt, end_xpos; | |
| 3495 int out_start, in_out_end, in_in_start, white_out_end, white_in_end; | |
| 3496 int out_cnt, in_out_cnt, in_in_cnt, white_out_cnt, white_in_cnt; | |
| 3497 | |
| 3498 struct display_block *odb, *idb; | |
| 3499 | |
| 793 | 3500 window = wrap_window (w); |
| 428 | 3501 |
| 3502 /* We have to add the glyphs to the line in the order outside, | |
| 3503 inside, whitespace. However the precedence dictates that we | |
| 3504 determine how many will fit in the reverse order. */ | |
| 3505 | |
| 3506 /* Determine how many whitespace glyphs we can display and where | |
| 3507 they should start. */ | |
| 3508 white_in_end = dl->bounds.right_white; | |
| 3509 white_out_end = dl->bounds.right_in; | |
| 3510 white_out_cnt = white_in_cnt = 0; | |
| 3511 elt = 0; | |
| 3512 | |
| 3513 while (elt < Dynarr_length (dl->right_glyphs)) | |
| 3514 { | |
| 3515 struct glyph_block *gb = Dynarr_atp (dl->right_glyphs, elt); | |
| 3516 | |
| 3517 if (NILP (gb->extent)) | |
| 2500 | 3518 ABORT (); /* these should have been handled in add_glyph_rune */ |
| 428 | 3519 |
| 3520 if (extent_end_glyph_layout (XEXTENT (gb->extent)) == GL_WHITESPACE) | |
| 3521 { | |
| 438 | 3522 int width = glyph_width (gb->glyph, window); |
| 428 | 3523 |
| 3524 if (white_in_end + width <= dl->bounds.right_in) | |
| 3525 { | |
| 3526 white_in_cnt++; | |
| 3527 white_in_end += width; | |
| 3528 gb->width = width; | |
| 3529 gb->active = 1; | |
| 3530 } | |
| 3531 else if (use_overflow | |
| 3532 && (white_out_end + width <= dl->bounds.right_out)) | |
| 3533 { | |
| 3534 white_out_cnt++; | |
| 3535 white_out_end += width; | |
| 3536 gb->width = width; | |
| 3537 gb->active = 1; | |
| 3538 } | |
| 3539 else | |
| 3540 gb->active = 0; | |
| 3541 } | |
| 3542 | |
| 3543 elt++; | |
| 3544 } | |
| 3545 | |
| 3546 /* Determine how many inside margin glyphs we can display and where | |
| 3547 they should start. The inside margin glyphs get whatever space | |
| 3548 is left after the whitespace glyphs have been displayed. These | |
| 3549 are tricky to calculate since if we decide to use the overflow | |
| 3550 area we basically have to start over. So for these we build up a | |
| 3551 list of just the inside margin glyphs and manipulate it to | |
| 3552 determine the needed info. */ | |
| 3553 { | |
| 3554 glyph_block_dynarr *ib; | |
| 3555 int avail_in, avail_out; | |
| 3556 int done = 0; | |
| 3557 int marker = 0; | |
| 3558 int used_in, used_out; | |
| 3559 | |
| 3560 elt = 0; | |
| 3561 used_in = used_out = 0; | |
| 3562 ib = Dynarr_new (glyph_block); | |
| 3563 while (elt < Dynarr_length (dl->right_glyphs)) | |
| 3564 { | |
| 3565 struct glyph_block *gb = Dynarr_atp (dl->right_glyphs, elt); | |
| 3566 | |
| 3567 if (NILP (gb->extent)) | |
| 2500 | 3568 ABORT (); /* these should have been handled in add_glyph_rune */ |
| 428 | 3569 |
| 3570 if (extent_end_glyph_layout (XEXTENT (gb->extent)) == GL_INSIDE_MARGIN) | |
| 3571 { | |
| 438 | 3572 gb->width = glyph_width (gb->glyph, window); |
| 428 | 3573 used_in += gb->width; |
| 3574 Dynarr_add (ib, *gb); | |
| 3575 } | |
| 3576 | |
| 3577 elt++; | |
| 3578 } | |
| 3579 | |
| 3580 if (white_out_cnt) | |
| 3581 avail_in = 0; | |
| 3582 else | |
| 3583 avail_in = dl->bounds.right_in - white_in_end; | |
| 3584 | |
| 3585 if (!use_overflow) | |
| 3586 avail_out = 0; | |
| 3587 else | |
| 3588 avail_out = dl->bounds.right_out - white_out_end; | |
| 3589 | |
| 3590 marker = 0; | |
| 3591 while (!done && marker < Dynarr_length (ib)) | |
| 3592 { | |
| 3593 int width = Dynarr_atp (ib, marker)->width; | |
| 3594 | |
| 3595 /* If everything now fits in the available inside margin | |
| 4187 | 3596 space, we're done. */ |
| 428 | 3597 if (used_in <= avail_in) |
| 3598 done = 1; | |
| 3599 else | |
| 3600 { | |
| 3601 /* Otherwise see if we have room to move a glyph to the | |
| 4187 | 3602 outside. */ |
| 428 | 3603 if (used_out + width <= avail_out) |
| 3604 { | |
| 3605 used_out += width; | |
| 3606 used_in -= width; | |
| 3607 } | |
| 3608 else | |
| 3609 done = 1; | |
| 3610 } | |
| 3611 | |
| 3612 if (!done) | |
| 3613 marker++; | |
| 3614 } | |
| 3615 | |
| 3616 /* At this point we now know that everything from marker on goes in | |
| 3617 the inside margin and everything before it goes in the outside | |
| 3618 margin. The stuff going into the outside margin is guaranteed | |
| 3619 to fit, but we may have to trim some stuff from the inside. */ | |
| 3620 | |
| 3621 in_in_start = dl->bounds.right_in; | |
| 3622 in_out_end = dl->bounds.right_in; | |
| 3623 in_out_cnt = in_in_cnt = 0; | |
| 3624 | |
| 3625 Dynarr_free (ib); | |
| 3626 elt = 0; | |
| 3627 while (elt < Dynarr_length (dl->right_glyphs)) | |
| 3628 { | |
| 3629 struct glyph_block *gb = Dynarr_atp (dl->right_glyphs, elt); | |
| 3630 | |
| 3631 if (NILP (gb->extent)) | |
| 2500 | 3632 ABORT (); /* these should have been handled in add_glyph_rune */ |
| 428 | 3633 |
| 3634 if (extent_end_glyph_layout (XEXTENT (gb->extent)) == GL_INSIDE_MARGIN) | |
| 3635 { | |
| 438 | 3636 int width = glyph_width (gb->glyph, window); |
| 428 | 3637 |
| 3638 if (used_out) | |
| 3639 { | |
| 3640 in_out_cnt++; | |
| 3641 in_out_end += width; | |
| 3642 gb->width = width; | |
| 3643 gb->active = 1; | |
| 3644 used_out -= width; | |
| 3645 } | |
| 3646 else if (in_in_start - width >= white_in_end) | |
| 3647 { | |
| 3648 in_in_cnt++; | |
| 3649 in_in_start -= width; | |
| 3650 gb->width = width; | |
| 3651 gb->active = 1; | |
| 3652 } | |
| 3653 else | |
| 3654 gb->active = 0; | |
| 3655 } | |
| 3656 | |
| 3657 elt++; | |
| 3658 } | |
| 3659 } | |
| 3660 | |
| 3661 /* Determine how many outside margin glyphs we can display. They | |
| 3662 always start at the right outside margin and can only use the | |
| 3663 outside margin space. */ | |
| 3664 out_start = dl->bounds.right_out; | |
| 3665 out_cnt = 0; | |
| 3666 elt = 0; | |
| 3667 | |
| 3668 while (elt < Dynarr_length (dl->right_glyphs)) | |
| 3669 { | |
| 3670 struct glyph_block *gb = Dynarr_atp (dl->right_glyphs, elt); | |
| 3671 | |
| 3672 if (NILP (gb->extent)) | |
| 2500 | 3673 ABORT (); /* these should have been handled in add_glyph_rune */ |
| 428 | 3674 |
| 3675 if (extent_end_glyph_layout (XEXTENT (gb->extent)) == GL_OUTSIDE_MARGIN) | |
| 3676 { | |
| 438 | 3677 int width = glyph_width (gb->glyph, window); |
| 428 | 3678 |
| 3679 if (out_start - width >= in_out_end) | |
| 3680 { | |
| 3681 out_cnt++; | |
| 3682 out_start -= width; | |
| 3683 gb->width = width; | |
| 3684 gb->active = 1; | |
| 3685 } | |
| 3686 else | |
| 3687 gb->active = 0; | |
| 3688 } | |
| 3689 | |
| 3690 elt++; | |
| 3691 } | |
| 3692 | |
| 3693 /* Now that we now where everything goes, we add the glyphs as runes | |
| 3694 to the appropriate display blocks. */ | |
| 3695 if (out_cnt || in_out_cnt || white_out_cnt) | |
| 3696 { | |
| 3697 odb = get_display_block_from_line (dl, RIGHT_OUTSIDE_MARGIN); | |
| 3698 /* #### See comments before odb->start_pos init in | |
| 4187 | 3699 create_left_glyph_block */ |
| 428 | 3700 odb->start_pos = dl->bounds.right_in; |
| 3701 odb->end_pos = dl->bounds.right_out; | |
| 3702 Dynarr_reset (odb->runes); | |
| 3703 } | |
| 3704 else | |
| 3705 odb = 0; | |
| 3706 | |
| 3707 if (in_in_cnt || white_in_cnt) | |
| 3708 { | |
| 3709 idb = get_display_block_from_line (dl, RIGHT_INSIDE_MARGIN); | |
| 3710 idb->start_pos = dl->bounds.right_white; | |
| 3711 /* #### See comments before odb->start_pos init in | |
| 4187 | 3712 create_left_glyph_block */ |
| 428 | 3713 idb->end_pos = dl->bounds.right_in; |
| 3714 Dynarr_reset (idb->runes); | |
| 3715 } | |
| 3716 else | |
| 3717 idb = 0; | |
| 3718 | |
| 3719 /* First add the whitespace margin glyphs which are actually in the | |
| 3720 inside margin. */ | |
| 3721 if (white_in_cnt) | |
| 3722 { | |
| 3723 end_xpos = add_margin_runes (dl, idb, dl->bounds.right_white, | |
| 3724 white_in_cnt, GL_WHITESPACE, RIGHT_GLYPHS, | |
| 3725 window); | |
| 3726 } | |
| 3727 else | |
| 3728 end_xpos = dl->bounds.right_white; | |
| 3729 | |
| 3730 /* Make sure that the area between the end of the whitespace glyphs | |
| 3731 and the inside margin glyphs is cleared. */ | |
| 3732 if (in_in_cnt && (in_in_start - end_xpos)) | |
| 3733 { | |
| 3734 add_margin_blank (dl, idb, w, end_xpos, in_in_start - end_xpos, | |
| 3735 RIGHT_GLYPHS); | |
| 3736 } | |
| 3737 | |
| 3738 /* Next add the inside margin glyphs which are actually in the | |
| 3739 inside margin. */ | |
| 3740 if (in_in_cnt) | |
| 3741 { | |
| 3742 end_xpos = add_margin_runes (dl, idb, in_in_start, in_in_cnt, | |
| 3743 GL_INSIDE_MARGIN, RIGHT_GLYPHS, window); | |
| 3744 } | |
| 3745 | |
| 3746 /* If we didn't add any inside margin glyphs then make sure the rest | |
| 3747 of the inside margin area gets cleared. */ | |
| 3748 if (idb && (dl->bounds.right_in - end_xpos)) | |
| 3749 { | |
| 3750 add_margin_blank (dl, idb, w, end_xpos, dl->bounds.right_in - end_xpos, | |
| 3751 RIGHT_GLYPHS); | |
| 3752 } | |
| 3753 | |
| 3754 /* Next add any whitespace glyphs in the outside margin. */ | |
| 3755 if (white_out_cnt) | |
| 3756 { | |
| 3757 end_xpos = add_margin_runes (dl, odb, dl->bounds.right_in, white_out_cnt, | |
| 3758 GL_WHITESPACE, RIGHT_GLYPHS, window); | |
| 3759 } | |
| 3760 else | |
| 3761 end_xpos = dl->bounds.right_in; | |
| 3762 | |
| 3763 /* Next add any inside margin glyphs in the outside margin. */ | |
| 3764 if (in_out_cnt) | |
| 3765 { | |
| 3766 end_xpos = add_margin_runes (dl, odb, end_xpos, in_out_cnt, | |
| 3767 GL_INSIDE_MARGIN, RIGHT_GLYPHS, window); | |
| 3768 } | |
| 3769 | |
| 3770 /* There may be space between any whitespace or inside margin glyphs | |
| 3771 in the outside margin and the actual outside margin glyphs. */ | |
| 3772 if (odb && (out_start - end_xpos)) | |
| 3773 { | |
| 3774 add_margin_blank (dl, odb, w, end_xpos, out_start - end_xpos, | |
| 3775 RIGHT_GLYPHS); | |
| 3776 } | |
| 3777 | |
| 3778 /* Finally, add the outside margin glyphs. */ | |
| 3779 if (out_cnt) | |
| 3780 { | |
| 3781 add_margin_runes (dl, odb, out_start, out_cnt, GL_OUTSIDE_MARGIN, | |
| 3782 RIGHT_GLYPHS, window); | |
| 3783 } | |
| 3784 } | |
| 3785 | |
| 3786 | |
| 3787 /***************************************************************************/ | |
| 3788 /* */ | |
| 3789 /* modeline routines */ | |
| 3790 /* */ | |
| 3791 /***************************************************************************/ | |
| 3792 | |
| 438 | 3793 /* This function is also used in frame.c by `generate_title_string' */ |
| 3794 void | |
| 3795 generate_formatted_string_db (Lisp_Object format_str, Lisp_Object result_str, | |
| 4187 | 3796 struct window *w, struct display_line *dl, |
| 3797 struct display_block *db, face_index findex, | |
| 3798 int min_pixpos, int max_pixpos, int type) | |
| 438 | 3799 { |
| 3800 struct frame *f = XFRAME (w->frame); | |
| 3801 struct device *d = XDEVICE (f->device); | |
| 3802 | |
| 3803 pos_data data; | |
| 3804 int c_pixpos; | |
| 3805 Charcount offset = 0; | |
| 3806 | |
| 3807 xzero (data); | |
| 3808 data.d = d; | |
| 3809 data.db = db; | |
| 3810 data.dl = dl; | |
| 3811 data.findex = findex; | |
| 3812 data.pixpos = min_pixpos; | |
| 3813 data.max_pixpos = max_pixpos; | |
| 3814 data.cursor_type = NO_CURSOR; | |
| 3815 data.last_charset = Qunbound; | |
| 3816 data.last_findex = DEFAULT_INDEX; | |
| 3817 data.result_str = result_str; | |
| 3818 data.is_modeline = 1; | |
| 3819 data.string = Qnil; | |
| 793 | 3820 data.window = wrap_window (w); |
| 438 | 3821 |
| 3822 Dynarr_reset (formatted_string_extent_dynarr); | |
| 3823 Dynarr_reset (formatted_string_extent_start_dynarr); | |
| 3824 Dynarr_reset (formatted_string_extent_end_dynarr); | |
| 3825 | |
| 3826 /* result_str is nil when we're building a frame or icon title. Otherwise, | |
| 3827 we're building a modeline, so the offset starts at the modeline | |
| 442 | 3828 horizontal scrolling amount */ |
| 438 | 3829 if (! NILP (result_str)) |
| 3830 offset = w->modeline_hscroll; | |
| 3831 generate_fstring_runes (w, &data, 0, 0, -1, format_str, 0, | |
| 4187 | 3832 max_pixpos - min_pixpos, findex, type, &offset, |
| 438 | 3833 Qnil); |
| 3834 | |
| 3835 if (Dynarr_length (db->runes)) | |
| 3836 { | |
|
4844
91b3d00e717f
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Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
3837 struct rune *rb = Dynarr_lastp (db->runes); |
| 438 | 3838 c_pixpos = rb->xpos + rb->width; |
| 3839 } | |
| 3840 else | |
| 3841 c_pixpos = min_pixpos; | |
| 3842 | |
| 3843 /* If we don't reach the right side of the window, add a blank rune | |
| 3844 to make up the difference. This usually only occurs if the | |
| 3845 modeline face is using a proportional width font or a fixed width | |
| 3846 font of a different size from the default face font. */ | |
| 3847 | |
| 3848 if (c_pixpos < max_pixpos) | |
| 3849 { | |
| 3850 data.pixpos = c_pixpos; | |
| 3851 data.blank_width = max_pixpos - data.pixpos; | |
| 3852 | |
| 3853 add_blank_rune (&data, NULL, 0); | |
| 3854 } | |
| 3855 | |
| 3856 /* Now create the result string and frob the extents into it. */ | |
| 3857 if (!NILP (result_str)) | |
| 3858 { | |
| 3859 int elt; | |
| 3860 Bytecount len; | |
| 867 | 3861 Ibyte *strdata; |
| 438 | 3862 struct buffer *buf = XBUFFER (WINDOW_BUFFER (w)); |
| 3863 | |
| 442 | 3864 in_modeline_generation = 1; |
| 3865 | |
| 771 | 3866 sledgehammer_check_ascii_begin (result_str); |
| 438 | 3867 detach_all_extents (result_str); |
| 793 | 3868 resize_string (result_str, -1, |
| 4187 | 3869 data.bytepos - XSTRING_LENGTH (result_str)); |
| 438 | 3870 |
| 3871 strdata = XSTRING_DATA (result_str); | |
| 3872 | |
| 3873 for (elt = 0, len = 0; elt < Dynarr_length (db->runes); elt++) | |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
3874 { |
|
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
3875 if (Dynarr_atp (db->runes, elt)->type == RUNE_CHAR) |
|
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
3876 { |
|
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
3877 len += (set_itext_ichar |
|
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
3878 (strdata + len, Dynarr_atp (db->runes, |
|
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
3879 elt)->object.chr.ch)); |
|
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
3880 } |
|
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
3881 } |
| 438 | 3882 |
| 771 | 3883 init_string_ascii_begin (result_str); |
| 3884 bump_string_modiff (result_str); | |
| 3885 sledgehammer_check_ascii_begin (result_str); | |
| 3886 | |
| 438 | 3887 for (elt = 0; elt < Dynarr_length (formatted_string_extent_dynarr); |
| 4187 | 3888 elt++) |
| 3889 { | |
| 3890 Lisp_Object extent = Qnil; | |
| 3891 Lisp_Object child; | |
| 3892 | |
| 3893 extent = wrap_extent (Dynarr_at (formatted_string_extent_dynarr, elt)); | |
| 3894 child = Fgethash (extent, buf->modeline_extent_table, Qnil); | |
| 3895 if (NILP (child)) | |
| 3896 { | |
| 3897 child = Fmake_extent (Qnil, Qnil, result_str); | |
| 3898 Fputhash (extent, child, buf->modeline_extent_table); | |
| 3899 } | |
| 3900 Fset_extent_parent (child, extent); | |
| 3901 set_extent_endpoints | |
| 3902 (XEXTENT (child), | |
| 3903 Dynarr_at (formatted_string_extent_start_dynarr, elt), | |
| 3904 Dynarr_at (formatted_string_extent_end_dynarr, elt), | |
| 3905 result_str); | |
| 3906 } | |
| 442 | 3907 |
| 3908 in_modeline_generation = 0; | |
| 438 | 3909 } |
| 3910 } | |
| 3911 | |
| 428 | 3912 /* Ensure that the given display line DL accurately represents the |
| 3913 modeline for the given window. */ | |
| 3914 static void | |
| 3915 generate_modeline (struct window *w, struct display_line *dl, int type) | |
| 3916 { | |
| 3917 struct buffer *b = XBUFFER (w->buffer); | |
| 3918 struct frame *f = XFRAME (w->frame); | |
| 3919 struct device *d = XDEVICE (f->device); | |
| 3920 | |
| 3921 /* Unlike display line and rune pointers, this one can't change underneath | |
| 3922 our feet. */ | |
| 3923 struct display_block *db = get_display_block_from_line (dl, TEXT); | |
| 3924 int max_pixpos, min_pixpos, ypos_adj; | |
| 3925 Lisp_Object font_inst; | |
| 3926 | |
| 3927 /* This will actually determine incorrect inside boundaries for the | |
| 3928 modeline since it ignores the margins. However being aware of this fact | |
| 3929 we never use those values anywhere so it doesn't matter. */ | |
| 3930 dl->bounds = calculate_display_line_boundaries (w, 1); | |
| 3931 | |
| 3932 /* We are generating a modeline. */ | |
| 3933 dl->modeline = 1; | |
| 3934 dl->cursor_elt = -1; | |
| 3935 | |
| 3936 /* Reset the runes on the modeline. */ | |
| 3937 Dynarr_reset (db->runes); | |
| 3938 | |
| 3939 if (!WINDOW_HAS_MODELINE_P (w)) | |
| 3940 { | |
| 3941 struct rune rb; | |
| 3942 | |
| 3943 /* If there is a horizontal scrollbar, don't add anything. */ | |
| 3944 if (window_scrollbar_height (w)) | |
| 3945 return; | |
| 3946 | |
| 3947 dl->ascent = DEVMETH (d, divider_height, ()); | |
| 3948 dl->descent = 0; | |
| 3949 /* The modeline is at the bottom of the gutters. */ | |
| 3950 dl->ypos = WINDOW_BOTTOM (w); | |
| 3951 | |
| 3952 rb.findex = MODELINE_INDEX; | |
| 3953 rb.xpos = dl->bounds.left_out; | |
| 3954 rb.width = dl->bounds.right_out - dl->bounds.left_out; | |
| 826 | 3955 rb.charpos = 0; |
| 428 | 3956 rb.endpos = 0; |
| 3957 rb.type = RUNE_HLINE; | |
| 3958 rb.object.hline.thickness = 1; | |
| 3959 rb.object.hline.yoffset = 0; | |
| 3960 rb.cursor_type = NO_CURSOR; | |
| 3961 | |
| 3962 if (!EQ (Qzero, w->modeline_shadow_thickness) | |
| 3963 && FRAME_WIN_P (f)) | |
| 3964 { | |
| 3965 int shadow_thickness = MODELINE_SHADOW_THICKNESS (w); | |
| 3966 | |
| 3967 dl->ypos -= shadow_thickness; | |
| 3968 rb.xpos += shadow_thickness; | |
| 3969 rb.width -= 2 * shadow_thickness; | |
| 3970 } | |
| 3971 | |
| 3972 Dynarr_add (db->runes, rb); | |
| 3973 return; | |
| 3974 } | |
| 3975 | |
| 3976 /* !!#### not right; needs to compute the max height of | |
| 3977 all the charsets */ | |
| 3978 font_inst = WINDOW_FACE_CACHEL_FONT (w, MODELINE_INDEX, Vcharset_ascii); | |
| 3979 | |
| 3980 dl->ascent = XFONT_INSTANCE (font_inst)->ascent; | |
| 3981 dl->descent = XFONT_INSTANCE (font_inst)->descent; | |
| 3982 | |
| 3983 min_pixpos = dl->bounds.left_out; | |
| 3984 max_pixpos = dl->bounds.right_out; | |
| 3985 | |
| 3986 if (!EQ (Qzero, w->modeline_shadow_thickness) && FRAME_WIN_P (f)) | |
| 3987 { | |
| 3988 int shadow_thickness = MODELINE_SHADOW_THICKNESS (w); | |
| 3989 | |
| 3990 ypos_adj = shadow_thickness; | |
| 3991 min_pixpos += shadow_thickness; | |
| 3992 max_pixpos -= shadow_thickness; | |
| 3993 } | |
| 3994 else | |
| 3995 ypos_adj = 0; | |
| 3996 | |
| 3997 generate_formatted_string_db (b->modeline_format, | |
| 3998 b->generated_modeline_string, w, dl, db, | |
| 3999 MODELINE_INDEX, min_pixpos, max_pixpos, type); | |
| 4000 | |
| 4001 /* The modeline is at the bottom of the gutters. We have to wait to | |
| 4002 set this until we've generated the modeline in order to account | |
| 4003 for any embedded faces. */ | |
| 4004 dl->ypos = WINDOW_BOTTOM (w) - dl->descent - ypos_adj; | |
| 4005 } | |
| 4006 | |
| 4007 static Charcount | |
| 867 | 4008 add_string_to_fstring_db_runes (pos_data *data, const Ibyte *str, |
| 4187 | 4009 Charcount pos, Charcount min_pos, |
| 771 | 4010 Charcount max_pos) |
| 428 | 4011 { |
| 4012 /* This function has been Mule-ized. */ | |
| 4013 Charcount end; | |
| 867 | 4014 const Ibyte *cur_pos = str; |
| 428 | 4015 struct display_block *db = data->db; |
| 4016 | |
| 4017 data->blank_width = space_width (XWINDOW (data->window)); | |
| 4018 while (Dynarr_length (db->runes) < pos) | |
| 4019 add_blank_rune (data, NULL, 0); | |
| 4020 | |
| 4021 end = (Dynarr_length (db->runes) + | |
| 4970 | 4022 bytecount_to_charcount (str, qxestrlen (str))); |
| 428 | 4023 if (max_pos != -1) |
| 4024 end = min (max_pos, end); | |
| 4025 | |
| 4026 while (pos < end && *cur_pos) | |
| 4027 { | |
| 867 | 4028 const Ibyte *old_cur_pos = cur_pos; |
| 428 | 4029 int succeeded; |
| 4030 | |
| 867 | 4031 data->ch = itext_ichar (cur_pos); |
| 4032 succeeded = (add_ichar_rune (data) != ADD_FAILED); | |
| 4033 INC_IBYTEPTR (cur_pos); | |
| 428 | 4034 if (succeeded) |
| 4187 | 4035 { |
| 4036 pos++; | |
| 4037 data->modeline_charpos++; | |
| 4038 data->bytepos += cur_pos - old_cur_pos; | |
| 4039 } | |
| 428 | 4040 } |
| 4041 | |
| 4042 while (Dynarr_length (db->runes) < min_pos && | |
| 4187 | 4043 (data->pixpos + data->blank_width <= data->max_pixpos)) |
| 428 | 4044 add_blank_rune (data, NULL, 0); |
| 4045 | |
| 4046 return Dynarr_length (db->runes); | |
| 4047 } | |
| 4048 | |
| 4049 /* #### Urk! Should also handle begin-glyphs and end-glyphs in | |
| 4050 modeline extents. */ | |
| 4051 static Charcount | |
| 4052 add_glyph_to_fstring_db_runes (pos_data *data, Lisp_Object glyph, | |
| 4187 | 4053 Charcount pos, Charcount UNUSED (min_pos), |
| 438 | 4054 Charcount max_pos, Lisp_Object extent) |
| 428 | 4055 { |
| 4056 /* This function has been Mule-ized. */ | |
| 4057 Charcount end; | |
| 4058 struct display_block *db = data->db; | |
| 4059 struct glyph_block gb; | |
| 4060 | |
| 4061 data->blank_width = space_width (XWINDOW (data->window)); | |
| 4062 while (Dynarr_length (db->runes) < pos) | |
| 4063 add_blank_rune (data, NULL, 0); | |
| 4064 | |
| 4065 end = Dynarr_length (db->runes) + 1; | |
| 4066 if (max_pos != -1) | |
| 4067 end = min (max_pos, end); | |
| 4068 | |
| 4069 gb.glyph = glyph; | |
| 438 | 4070 gb.extent = extent; |
| 428 | 4071 add_glyph_rune (data, &gb, BEGIN_GLYPHS, 0, 0); |
| 4072 pos++; | |
| 4073 | |
| 4074 while (Dynarr_length (db->runes) < pos && | |
| 4187 | 4075 (data->pixpos + data->blank_width <= data->max_pixpos)) |
| 428 | 4076 add_blank_rune (data, NULL, 0); |
| 4077 | |
| 4078 return Dynarr_length (db->runes); | |
| 4079 } | |
| 4080 | |
| 4081 /* If max_pos is == -1, it is considered to be infinite. The same is | |
| 4082 true of max_pixsize. */ | |
| 4083 #define SET_CURRENT_MODE_CHARS_PIXSIZE \ | |
| 4084 if (Dynarr_length (data->db->runes)) \ | |
| 4967 | 4085 cur_pixsize = data->pixpos - Dynarr_begin (data->db->runes)->xpos; \ |
| 428 | 4086 else \ |
| 4087 cur_pixsize = 0; | |
| 4088 | |
| 4089 /* Note that this function does "positions" in terms of characters and | |
| 4090 not in terms of columns. This is necessary to make the formatting | |
| 4091 work correctly when proportional width fonts are used in the | |
| 4092 modeline. */ | |
| 4093 static Charcount | |
| 4094 generate_fstring_runes (struct window *w, pos_data *data, Charcount pos, | |
| 4187 | 4095 Charcount min_pos, Charcount max_pos, |
| 4096 Lisp_Object elt, int depth, int max_pixsize, | |
| 4097 face_index findex, int type, Charcount *offset, | |
| 438 | 4098 Lisp_Object cur_ext) |
| 428 | 4099 { |
| 4100 /* This function has been Mule-ized. */ | |
| 4101 /* #### The other losing things in this function are: | |
| 4102 | |
| 4103 -- C zero-terminated-string lossage. | |
| 4104 -- Non-printable characters should be converted into something | |
| 4187 | 4105 appropriate (e.g. ^F) instead of blindly being printed anyway. |
| 428 | 4106 */ |
| 4107 | |
| 4108 tail_recurse: | |
| 4109 if (depth > 10) | |
| 4110 goto invalid; | |
| 4111 | |
| 4112 depth++; | |
| 4113 | |
| 4114 if (STRINGP (elt)) | |
| 4115 { | |
| 4116 /* A string. Add to the display line and check for %-constructs | |
| 4187 | 4117 within it. */ |
| 428 | 4118 |
| 2552 | 4119 Ibyte *this_str = XSTRING_DATA (elt); |
| 4120 | |
| 4121 while ((pos < max_pos || max_pos == -1) && *this_str) | |
| 4187 | 4122 { |
| 4123 Ibyte *last = this_str; | |
| 4124 | |
| 4125 while (*this_str && *this_str != '%') | |
| 4126 this_str++; | |
| 4127 | |
| 4128 if (this_str != last) | |
| 4129 { | |
| 4130 /* No %-construct */ | |
| 4131 Charcount size = | |
| 2552 | 4132 bytecount_to_charcount (last, this_str - last); |
| 438 | 4133 |
| 4134 if (size <= *offset) | |
| 4135 *offset -= size; | |
| 4136 else | |
| 4137 { | |
| 4138 Charcount tmp_max = (max_pos == -1 ? pos + size - *offset : | |
| 4139 min (pos + size - *offset, max_pos)); | |
| 867 | 4140 const Ibyte *tmp_last = itext_n_addr (last, *offset); |
| 438 | 4141 |
| 4142 pos = add_string_to_fstring_db_runes (data, tmp_last, | |
| 4143 pos, pos, tmp_max); | |
| 4144 *offset = 0; | |
| 4145 } | |
| 4187 | 4146 } |
| 4147 else /* *this_str == '%' */ | |
| 4148 { | |
| 4149 Charcount spec_width = 0; | |
| 4150 | |
| 4151 this_str++; /* skip over '%' */ | |
| 4152 | |
| 4153 /* We can't allow -ve args due to the "%-" construct. | |
| 4154 * Argument specifies minwidth but not maxwidth | |
| 4155 * (maxwidth can be specified by | |
| 4156 * (<negative-number> . <stuff>) modeline elements) | |
| 4157 */ | |
| 4158 while (isdigit (*this_str)) | |
| 4159 { | |
| 4160 spec_width = spec_width * 10 + (*this_str - '0'); | |
| 4161 this_str++; | |
| 4162 } | |
| 4163 spec_width += pos; | |
| 4164 | |
| 4165 if (*this_str == 'M') | |
| 4166 { | |
| 4167 pos = generate_fstring_runes (w, data, pos, spec_width, | |
| 4168 max_pos, Vglobal_mode_string, | |
| 4169 depth, max_pixsize, findex, | |
| 4170 type, offset, cur_ext); | |
| 4171 } | |
| 4172 else if (*this_str == '-') | |
| 4173 { | |
| 4174 Charcount num_to_add; | |
| 4175 | |
| 4176 if (max_pixsize < 0) | |
| 4177 num_to_add = 0; | |
| 4178 else if (max_pos != -1) | |
| 4179 num_to_add = max_pos - pos; | |
| 4180 else | |
| 4181 { | |
| 4182 int cur_pixsize; | |
| 4183 int dash_pixsize; | |
| 4184 Ibyte ch = '-'; | |
| 4185 SET_CURRENT_MODE_CHARS_PIXSIZE; | |
| 4186 | |
| 4187 dash_pixsize = | |
|
4815
6540302eedf5
Fix query_string_geometry lookup domain
Didier Verna <didier@lrde.epita.fr>
parents:
4528
diff
changeset
|
4188 redisplay_window_text_width_string |
|
6540302eedf5
Fix query_string_geometry lookup domain
Didier Verna <didier@lrde.epita.fr>
parents:
4528
diff
changeset
|
4189 (w, findex, &ch, Qnil, 0, 1); |
| 4187 | 4190 |
| 4191 if (dash_pixsize == 0) | |
| 3094 | 4192 num_to_add = 0; |
| 4193 else { | |
| 4194 num_to_add = (max_pixsize - cur_pixsize) / dash_pixsize; | |
| 4195 num_to_add++; | |
| 4196 } | |
| 4187 | 4197 } |
| 4198 | |
| 4199 while (num_to_add--) | |
| 4200 pos = add_string_to_fstring_db_runes | |
| 4201 (data, (const Ibyte *) "-", pos, pos, max_pos); | |
| 4202 } | |
| 4203 else if (*this_str != 0) | |
| 4204 { | |
| 4205 Ichar ch = itext_ichar (this_str); | |
| 4206 Ibyte *str; | |
| 438 | 4207 Charcount size; |
| 4208 | |
| 4187 | 4209 decode_mode_spec (w, ch, type); |
| 4210 | |
| 4967 | 4211 str = Dynarr_begin (mode_spec_ibyte_string); |
| 438 | 4212 size = bytecount_to_charcount |
| 4213 /* Skip the null character added by `decode_mode_spec' */ | |
| 867 | 4214 (str, Dynarr_length (mode_spec_ibyte_string)) - 1; |
| 438 | 4215 |
| 4216 if (size <= *offset) | |
| 4217 *offset -= size; | |
| 4218 else | |
| 4219 { | |
| 867 | 4220 const Ibyte *tmp_str = itext_n_addr (str, *offset); |
| 438 | 4221 |
| 440 | 4222 /* #### NOTE: I don't understand why a tmp_max is not |
| 438 | 4223 computed and used here as in the plain string case |
| 4224 above. -- dv */ | |
| 4225 pos = add_string_to_fstring_db_runes (data, tmp_str, | |
| 4226 pos, pos, | |
| 4227 max_pos); | |
| 4228 *offset = 0; | |
| 4229 } | |
| 4187 | 4230 } |
| 4231 | |
| 4232 /* NOT this_str++. There could be any sort of character at | |
| 4233 the current position. */ | |
| 4234 INC_IBYTEPTR (this_str); | |
| 4235 } | |
| 4236 | |
| 4237 if (max_pixsize > 0) | |
| 4238 { | |
| 4239 int cur_pixsize; | |
| 4240 SET_CURRENT_MODE_CHARS_PIXSIZE; | |
| 4241 | |
| 4242 if (cur_pixsize >= max_pixsize) | |
| 4243 break; | |
| 4244 } | |
| 4245 } | |
| 428 | 4246 } |
| 4247 else if (SYMBOLP (elt)) | |
| 4248 { | |
| 4249 /* A symbol: process the value of the symbol recursively | |
| 4187 | 4250 as if it appeared here directly. */ |
| 428 | 4251 Lisp_Object tem = symbol_value_in_buffer (elt, w->buffer); |
| 4252 | |
| 4253 if (!UNBOUNDP (tem)) | |
| 4187 | 4254 { |
| 438 | 4255 /* If value is a string, output that string literally: |
| 4187 | 4256 don't check for % within it. */ |
| 4257 if (STRINGP (tem)) | |
| 4258 { | |
| 867 | 4259 Ibyte *str = XSTRING_DATA (tem); |
| 826 | 4260 Charcount size = string_char_length (tem); |
| 438 | 4261 |
| 4262 if (size <= *offset) | |
| 4263 *offset -= size; | |
| 4264 else | |
| 4265 { | |
| 867 | 4266 const Ibyte *tmp_str = itext_n_addr (str, *offset); |
| 438 | 4267 |
| 440 | 4268 /* #### NOTE: I don't understand why a tmp_max is not |
| 438 | 4269 computed and used here as in the plain string case |
| 4270 above. -- dv */ | |
| 4271 pos = add_string_to_fstring_db_runes (data, tmp_str, pos, | |
| 4272 min_pos, max_pos); | |
| 4273 *offset = 0; | |
| 4274 } | |
| 4187 | 4275 } |
| 4276 /* Give up right away for nil or t. */ | |
| 4277 else if (!EQ (tem, elt)) | |
| 4278 { | |
| 4279 elt = tem; | |
| 4280 goto tail_recurse; | |
| 4281 } | |
| 4282 } | |
| 428 | 4283 } |
| 4284 else if (GENERIC_SPECIFIERP (elt)) | |
| 4285 { | |
| 4286 Lisp_Object window, tem; | |
| 793 | 4287 window = wrap_window (w); |
| 428 | 4288 tem = specifier_instance_no_quit (elt, Qunbound, window, |
| 793 | 4289 ERROR_ME_DEBUG_WARN, 0, Qzero); |
| 428 | 4290 if (!UNBOUNDP (tem)) |
| 4291 { | |
| 4292 elt = tem; | |
| 4293 goto tail_recurse; | |
| 4294 } | |
| 4295 } | |
| 4296 else if (CONSP (elt)) | |
| 4297 { | |
| 4298 /* A cons cell: four distinct cases. | |
| 438 | 4299 * - If first element is a string or a cons, process all the elements |
| 4300 * and effectively concatenate them. | |
| 4301 * - If first element is a negative number, truncate displaying cdr to | |
| 4302 * at most that many characters. If positive, pad (with spaces) | |
| 4303 * to at least that many characters. | |
| 771 | 4304 * - If first element is another symbol or a boolean specifier, process |
| 4305 * the cadr or caddr recursively according to whether the symbol's | |
| 4306 * value or specifier's instance is non-nil or nil. | |
| 4307 * - If first element is , process the cadr or caddr | |
| 4308 * recursively according to whether the instance of the specifier in | |
| 4309 * the modeline's window is non-nil or nil. | |
| 442 | 4310 * - If first element is an extent, process the cdr recursively |
| 4311 * and handle the extent's face. | |
| 428 | 4312 */ |
| 438 | 4313 |
| 428 | 4314 Lisp_Object car, tem; |
| 4315 | |
| 4316 car = XCAR (elt); | |
| 771 | 4317 if (SYMBOLP (car) || BOOLEAN_SPECIFIERP (car)) |
| 438 | 4318 { |
| 4319 elt = XCDR (elt); | |
| 4320 if (!CONSP (elt)) | |
| 4321 goto invalid; | |
| 4322 | |
| 771 | 4323 if (SYMBOLP (car)) |
| 4324 tem = symbol_value_in_buffer (car, w->buffer); | |
| 4325 else | |
| 4326 tem = specifier_instance_no_quit (car, Qunbound, wrap_window (w), | |
| 793 | 4327 ERROR_ME_DEBUG_WARN, 0, Qzero); |
| 438 | 4328 /* elt is now the cdr, and we know it is a cons cell. |
| 4329 Use its car if CAR has a non-nil value. */ | |
| 771 | 4330 if (!UNBOUNDP (tem) && !NILP (tem)) |
| 438 | 4331 { |
| 771 | 4332 elt = XCAR (elt); |
| 4333 goto tail_recurse; | |
| 438 | 4334 } |
| 771 | 4335 /* Symbol's value or specifier's instance is nil or unbound |
| 438 | 4336 * Get the cddr of the original list |
| 4337 * and if possible find the caddr and use that. | |
| 4338 */ | |
| 4339 elt = XCDR (elt); | |
| 4340 if (NILP (elt)) | |
| 4341 ; | |
| 4342 else if (!CONSP (elt)) | |
| 4343 goto invalid; | |
| 4344 else | |
| 4345 { | |
| 4346 elt = XCAR (elt); | |
| 4347 goto tail_recurse; | |
| 4348 } | |
| 4349 } | |
| 428 | 4350 else if (INTP (car)) |
| 4187 | 4351 { |
| 4352 Charcount lim = XINT (car); | |
| 4353 | |
| 4354 elt = XCDR (elt); | |
| 4355 | |
| 4356 if (lim < 0) | |
| 4357 { | |
| 4358 /* Negative int means reduce maximum width. | |
| 4359 * DO NOT change MIN_PIXPOS here! | |
| 4360 * (20 -10 . foo) should truncate foo to 10 col | |
| 4361 * and then pad to 20. | |
| 4362 */ | |
| 4363 if (max_pos == -1) | |
| 4364 max_pos = pos - lim; | |
| 4365 else | |
| 4366 max_pos = min (max_pos, pos - lim); | |
| 4367 } | |
| 4368 else if (lim > 0) | |
| 4369 { | |
| 4370 /* Padding specified. Don't let it be more than | |
| 4371 * current maximum. | |
| 4372 */ | |
| 4373 lim += pos; | |
| 4374 if (max_pos != -1 && lim > max_pos) | |
| 4375 lim = max_pos; | |
| 4376 /* If that's more padding than already wanted, queue it. | |
| 4377 * But don't reduce padding already specified even if | |
| 4378 * that is beyond the current truncation point. | |
| 4379 */ | |
| 4380 if (lim > min_pos) | |
| 4381 min_pos = lim; | |
| 4382 } | |
| 4383 goto tail_recurse; | |
| 4384 } | |
| 428 | 4385 else if (STRINGP (car) || CONSP (car)) |
| 4187 | 4386 { |
| 4387 int limit = 50; | |
| 4388 | |
| 4389 /* LIMIT is to protect against circular lists. */ | |
| 4390 while (CONSP (elt) && --limit > 0 | |
| 4391 && (pos < max_pos || max_pos == -1)) | |
| 4392 { | |
| 4393 pos = generate_fstring_runes (w, data, pos, pos, max_pos, | |
| 4394 XCAR (elt), depth, max_pixsize, | |
| 438 | 4395 findex, type, offset, cur_ext); |
| 4187 | 4396 elt = XCDR (elt); |
| 4397 } | |
| 4398 } | |
| 428 | 4399 else if (EXTENTP (car)) |
| 4187 | 4400 { |
| 4401 struct extent *ext = XEXTENT (car); | |
| 4402 | |
| 4403 if (EXTENT_LIVE_P (ext)) | |
| 4404 { | |
| 4405 face_index old_findex = data->findex; | |
| 4406 Lisp_Object face; | |
| 4407 Lisp_Object font_inst; | |
| 4408 face_index new_findex; | |
| 4409 Bytecount start = data->bytepos; | |
| 4410 | |
| 4411 face = extent_face (ext); | |
| 4412 if (FACEP (face)) | |
| 4413 { | |
| 4414 /* #### needs to merge faces, sigh */ | |
| 4415 /* #### needs to handle list of faces */ | |
| 4416 new_findex = get_builtin_face_cache_index (w, face); | |
| 4417 /* !!#### not right; needs to compute the max height of | |
| 4418 all the charsets */ | |
| 4419 font_inst = WINDOW_FACE_CACHEL_FONT (w, new_findex, | |
| 4420 Vcharset_ascii); | |
| 4421 | |
| 4422 data->dl->ascent = max (data->dl->ascent, | |
| 4423 XFONT_INSTANCE (font_inst)->ascent); | |
| 4424 data->dl->descent = max (data->dl->descent, | |
| 4425 XFONT_INSTANCE (font_inst)-> | |
| 4426 descent); | |
| 4427 } | |
| 4428 else | |
| 4429 new_findex = old_findex; | |
| 4430 | |
| 4431 data->findex = new_findex; | |
| 4432 pos = generate_fstring_runes (w, data, pos, pos, max_pos, | |
| 4433 XCDR (elt), depth - 1, | |
| 438 | 4434 max_pixsize, new_findex, type, |
| 4435 offset, car); | |
| 4187 | 4436 data->findex = old_findex; |
| 4437 Dynarr_add (formatted_string_extent_dynarr, ext); | |
| 4438 Dynarr_add (formatted_string_extent_start_dynarr, start); | |
| 4439 Dynarr_add (formatted_string_extent_end_dynarr, data->bytepos); | |
| 4440 } | |
| 4441 } | |
| 428 | 4442 } |
| 4443 else if (GLYPHP (elt)) | |
| 4444 { | |
| 438 | 4445 /* Glyphs are considered as one character with respect to the modeline |
| 4446 horizontal scrolling facility. -- dv */ | |
| 4447 if (*offset > 0) | |
| 4448 *offset -= 1; | |
| 4449 else | |
| 4450 pos = add_glyph_to_fstring_db_runes (data, elt, pos, pos, max_pos, | |
| 4451 cur_ext); | |
| 428 | 4452 } |
| 4453 else | |
| 4454 { | |
| 4455 invalid: | |
| 438 | 4456 { |
| 4970 | 4457 const Ascbyte *str = GETTEXT ("*invalid*"); |
| 438 | 4458 Charcount size = (Charcount) strlen (str); /* is this ok ?? -- dv */ |
| 4459 | |
| 4460 if (size <= *offset) | |
| 4461 *offset -= size; | |
| 4462 else | |
| 4463 { | |
| 867 | 4464 const Ibyte *tmp_str = |
| 4465 itext_n_addr ((const Ibyte *) str, *offset); | |
| 438 | 4466 |
| 440 | 4467 /* #### NOTE: I don't understand why a tmp_max is not computed and |
| 438 | 4468 used here as in the plain string case above. -- dv */ |
| 4469 pos = add_string_to_fstring_db_runes (data, tmp_str, pos, | |
| 4470 min_pos, max_pos); | |
| 4471 *offset = 0; | |
| 4472 } | |
| 4473 } | |
| 428 | 4474 } |
| 4475 | |
| 4476 if (min_pos > pos) | |
| 4477 { | |
| 867 | 4478 add_string_to_fstring_db_runes (data, (const Ibyte *) "", pos, |
| 438 | 4479 min_pos, -1); |
| 428 | 4480 } |
| 4481 | |
| 4482 return pos; | |
| 4483 } | |
| 4484 | |
| 4485 /* Update just the modeline. Assumes the desired display structs. If | |
| 4486 they do not have a modeline block, it does nothing. */ | |
| 4487 static void | |
| 4488 regenerate_modeline (struct window *w) | |
| 4489 { | |
| 4490 display_line_dynarr *dla = window_display_lines (w, DESIRED_DISP); | |
| 4491 | |
| 4967 | 4492 if (!Dynarr_length (dla) || !Dynarr_begin (dla)->modeline) |
| 428 | 4493 return; |
| 4494 else | |
| 4495 { | |
| 4967 | 4496 generate_modeline (w, Dynarr_begin (dla), DESIRED_DISP); |
| 428 | 4497 redisplay_update_line (w, 0, 0, 0); |
| 4498 } | |
| 4499 } | |
| 4500 | |
| 4501 /* Make sure that modeline display line is present in the given | |
| 4502 display structs if the window has a modeline and update that | |
| 4503 line. Returns true if a modeline was needed. */ | |
| 4504 static int | |
| 4505 ensure_modeline_generated (struct window *w, int type) | |
| 4506 { | |
| 4507 int need_modeline; | |
| 4508 | |
| 4509 /* minibuffer windows don't have modelines */ | |
| 4510 if (MINI_WINDOW_P (w)) | |
| 4511 need_modeline = 0; | |
| 4512 /* windows which haven't had it turned off do */ | |
| 4513 else if (WINDOW_HAS_MODELINE_P (w)) | |
| 4514 need_modeline = 1; | |
| 4515 /* windows which have it turned off don't have a divider if there is | |
| 4516 a horizontal scrollbar */ | |
| 4517 else if (window_scrollbar_height (w)) | |
| 4518 need_modeline = 0; | |
| 4519 /* and in this case there is none */ | |
| 4520 else | |
| 4521 need_modeline = 1; | |
| 4522 | |
| 4523 if (need_modeline) | |
| 4524 { | |
| 4525 display_line_dynarr *dla; | |
| 4526 | |
| 4527 dla = window_display_lines (w, type); | |
| 4528 | |
| 4529 /* We don't care if there is a display line which is not | |
| 4187 | 4530 currently a modeline because it is definitely going to become |
| 4531 one if we have gotten to this point. */ | |
| 428 | 4532 if (Dynarr_length (dla) == 0) |
| 4533 { | |
| 4534 if (Dynarr_largest (dla) > 0) | |
| 800 | 4535 Dynarr_increment (dla); |
| 428 | 4536 else |
| 4537 { | |
| 4538 struct display_line modeline; | |
| 4207 | 4539 |
| 4540 DISPLAY_LINE_INIT (modeline); | |
| 428 | 4541 Dynarr_add (dla, modeline); |
| 4542 } | |
| 4543 } | |
| 4544 | |
| 4545 /* If we're adding a new place marker go ahead and generate the | |
| 4187 | 4546 modeline so that it is available for use by |
| 4547 window_modeline_height. */ | |
| 4967 | 4548 generate_modeline (w, Dynarr_begin (dla), type); |
| 428 | 4549 } |
| 4550 | |
| 4551 return need_modeline; | |
| 4552 } | |
| 4553 | |
| 4554 /* #### Kludge or not a kludge. I tend towards the former. */ | |
| 4555 int | |
| 4556 real_current_modeline_height (struct window *w) | |
| 4557 { | |
| 4558 Fset_marker (w->start[CMOTION_DISP], w->start[CURRENT_DISP], w->buffer); | |
| 4559 Fset_marker (w->pointm[CMOTION_DISP], w->pointm[CURRENT_DISP], w->buffer); | |
| 4560 | |
| 4561 if (ensure_modeline_generated (w, CMOTION_DISP)) | |
| 4562 { | |
| 4563 display_line_dynarr *dla = window_display_lines (w, CMOTION_DISP); | |
| 4564 | |
| 4565 if (Dynarr_length (dla)) | |
| 4566 { | |
| 4967 | 4567 if (Dynarr_begin (dla)->modeline) |
| 4568 return (Dynarr_begin (dla)->ascent + | |
| 4569 Dynarr_begin (dla)->descent); | |
| 428 | 4570 } |
| 4571 } | |
| 4572 return 0; | |
| 4573 } | |
| 4574 | |
| 4575 | |
| 4576 /***************************************************************************/ | |
| 819 | 4577 /* */ |
| 826 | 4578 /* displayable string routines */ |
| 819 | 4579 /* */ |
| 428 | 4580 /***************************************************************************/ |
| 4581 | |
| 4582 /* Given a position for a string in a window, ensure that the given | |
| 4583 display line DL accurately represents the text on a line starting | |
| 4584 at the given position. | |
| 4585 | |
| 4586 Yes, this is duplicating the code of create_text_block, but it | |
| 4587 looked just too hard to change create_text_block to handle strings | |
| 4588 *and* buffers. We already make a distinction between the two | |
| 4589 elsewhere in the code so I think unifying them would require a | |
| 4590 complete MULE rewrite. Besides, the other distinction is that these | |
| 4591 functions cover text that the user *cannot edit* so we can remove | |
| 4592 everything to do with cursors, minibuffers etc. Eventually the | |
| 4593 modeline routines should be modified to use this code as it copes | |
| 4594 with many more types of display situation. */ | |
| 4595 | |
| 665 | 4596 static Charbpos |
| 428 | 4597 create_string_text_block (struct window *w, Lisp_Object disp_string, |
| 4598 struct display_line *dl, | |
| 826 | 4599 Charcount start_pos, |
| 428 | 4600 prop_block_dynarr **prop, |
| 4601 face_index default_face) | |
| 4602 { | |
| 4603 struct frame *f = XFRAME (w->frame); | |
| 4604 /* Note that a lot of the buffer controlled stuff has been left in | |
| 4605 because you might well want to make use of it (selective display | |
| 4606 etc), its just the buffer text that we do not use. However, it | |
| 4607 seems to be possible for buffer to be nil sometimes so protect | |
| 4608 against this case. */ | |
| 4609 struct buffer *b = BUFFERP (w->buffer) ? XBUFFER (w->buffer) : 0; | |
| 4610 struct device *d = XDEVICE (f->device); | |
| 4611 | |
| 4612 /* we're working with these a lot so precalculate them */ | |
| 4613 Bytecount slen = XSTRING_LENGTH (disp_string); | |
| 826 | 4614 Bytecount byte_string_zv = slen; |
| 4615 Bytecount byte_start_pos = string_index_char_to_byte (disp_string, start_pos); | |
| 428 | 4616 |
| 4617 pos_data data; | |
| 4618 | |
| 4619 int truncate_win = b ? window_truncation_on (w) : 0; | |
| 4620 | |
| 442 | 4621 /* We're going to ditch selective display for static text, it's an |
| 4622 FSF thing and invisible extents are the way to go here. | |
| 4623 Implementing it also relies on a number of buffer-specific | |
| 428 | 4624 functions that we don't have the luxury of being able to use |
| 4625 here. */ | |
| 4626 | |
| 4627 /* The variable ctl-arrow allows the user to specify what characters | |
| 4628 can actually be displayed and which octal should be used for. | |
| 4629 #### This variable should probably have some rethought done to | |
| 4630 it. | |
| 4631 | |
| 4632 #### It would also be really nice if you could specify that | |
| 4633 the characters come out in hex instead of in octal. Mule | |
| 4634 does that by adding a ctl-hexa variable similar to ctl-arrow, | |
| 4635 but that's bogus -- we need a more general solution. I | |
| 4636 think you need to extend the concept of display tables | |
| 4637 into a more general conversion mechanism. Ideally you | |
| 4638 could specify a Lisp function that converts characters, | |
| 4639 but this violates the Second Golden Rule and besides would | |
| 4640 make things way way way way slow. | |
| 4641 | |
| 4642 So instead, we extend the display-table concept, which was | |
| 4643 historically limited to 256-byte vectors, to one of the | |
| 4644 following: | |
| 4645 | |
| 4646 a) A 256-entry vector, for backward compatibility; | |
| 4647 b) char-table, mapping characters to values; | |
| 4648 c) range-table, mapping ranges of characters to values; | |
| 4649 d) a list of the above. | |
| 4650 | |
| 4651 The (d) option allows you to specify multiple display tables | |
| 4652 instead of just one. Each display table can specify conversions | |
| 4653 for some characters and leave others unchanged. The way the | |
| 4654 character gets displayed is determined by the first display table | |
| 4655 with a binding for that character. This way, you could call a | |
| 4656 function `enable-hex-display' that adds a hex display-table to | |
| 4657 the list of display tables for the current buffer. | |
| 4658 | |
| 4659 #### ...not yet implemented... Also, we extend the concept of | |
| 4660 "mapping" to include a printf-like spec. Thus you can make all | |
| 4661 extended characters show up as hex with a display table like | |
| 4662 this: | |
| 4663 | |
| 4187 | 4664 #s(range-table data ((256 524288) (format "%x"))) |
| 428 | 4665 |
| 4666 Since more than one display table is possible, you have | |
| 4667 great flexibility in mapping ranges of characters. */ | |
| 867 | 4668 Ichar printable_min = b ? (CHAR_OR_CHAR_INTP (b->ctl_arrow) |
| 428 | 4669 ? XCHAR_OR_CHAR_INT (b->ctl_arrow) |
| 4670 : ((EQ (b->ctl_arrow, Qt) || EQ (b->ctl_arrow, Qnil)) | |
| 4671 ? 255 : 160)) : 255; | |
| 4672 | |
| 4673 Lisp_Object face_dt, window_dt; | |
| 4674 | |
| 4675 /* The text display block for this display line. */ | |
| 4676 struct display_block *db = get_display_block_from_line (dl, TEXT); | |
| 4677 | |
| 4678 /* The first time through the main loop we need to force the glyph | |
| 4679 data to be updated. */ | |
| 4680 int initial = 1; | |
| 4681 | |
| 4682 /* Apparently the new extent_fragment_update returns an end position | |
| 4683 equal to the position passed in if there are no more runs to be | |
| 4684 displayed. */ | |
| 4685 int no_more_frags = 0; | |
| 4686 | |
| 4687 dl->used_prop_data = 0; | |
| 4688 dl->num_chars = 0; | |
| 442 | 4689 dl->line_continuation = 0; |
| 428 | 4690 |
| 4187 | 4691 /* Set up faces to use for clearing areas, used by output_display_line. */ |
| 428 | 4692 dl->default_findex = default_face; |
| 4187 | 4693 if (default_face > DEFAULT_INDEX) |
| 428 | 4694 { |
| 4695 dl->left_margin_findex = default_face; | |
| 4696 dl->right_margin_findex = default_face; | |
| 4697 } | |
| 4698 else | |
| 4699 { | |
| 434 | 4700 dl->left_margin_findex = |
| 428 | 4701 get_builtin_face_cache_index (w, Vleft_margin_face); |
| 434 | 4702 dl->right_margin_findex = |
| 428 | 4703 get_builtin_face_cache_index (w, Vright_margin_face); |
| 4704 } | |
| 4705 | |
| 4706 xzero (data); | |
| 4707 data.ef = extent_fragment_new (disp_string, f); | |
| 4708 | |
| 4709 /* These values are used by all of the rune addition routines. We add | |
| 4710 them to this structure for ease of passing. */ | |
| 4711 data.d = d; | |
| 793 | 4712 data.window = wrap_window (w); |
| 428 | 4713 data.db = db; |
| 4714 data.dl = dl; | |
| 4715 | |
| 826 | 4716 data.byte_charpos = byte_start_pos; |
| 428 | 4717 data.pixpos = dl->bounds.left_in; |
| 4718 data.last_charset = Qunbound; | |
| 4719 data.last_findex = default_face; | |
| 4720 data.result_str = Qnil; | |
| 4721 data.string = disp_string; | |
| 4722 | |
| 4723 /* Set the right boundary adjusting it to take into account any end | |
| 4724 glyph. Save the width of the end glyph for later use. */ | |
| 4725 data.max_pixpos = dl->bounds.right_in; | |
| 819 | 4726 data.max_pixpos -= data.end_glyph_width; |
| 428 | 4727 |
| 4728 data.cursor_type = NO_CURSOR; | |
| 4729 data.cursor_x = -1; | |
| 4730 | |
| 4731 data.start_col = 0; | |
| 4732 /* I don't think we want this, string areas should not scroll with | |
| 434 | 4733 the window |
| 428 | 4734 data.start_col = w->hscroll; |
| 826 | 4735 data.byte_start_col_enabled = (w->hscroll ? byte_start_pos : 0); |
| 428 | 4736 */ |
| 826 | 4737 data.byte_start_col_enabled = 0; |
| 428 | 4738 data.hscroll_glyph_width_adjust = 0; |
| 4739 | |
| 4740 /* We regenerate the line from the very beginning. */ | |
| 4741 Dynarr_reset (db->runes); | |
| 4742 | |
| 4743 /* Why is this less than or equal and not just less than? If the | |
| 4744 starting position is already equal to the maximum we can't add | |
| 4745 anything else, right? Wrong. We might still have a newline to | |
| 4746 add. A newline can use the room allocated for an end glyph since | |
| 4747 if we add it we know we aren't going to be adding any end | |
| 4748 glyph. */ | |
| 4749 | |
| 4750 /* #### Chuck -- I think this condition should be while (1). | |
| 4751 Otherwise if (e.g.) there is one begin-glyph and one end-glyph | |
| 4752 and the begin-glyph ends exactly at the end of the window, the | |
| 4753 end-glyph and text might not be displayed. while (1) ensures | |
| 4754 that the loop terminates only when either (a) there is | |
| 4755 propagation data or (b) the end-of-line or end-of-buffer is hit. | |
| 4756 | |
| 4757 #### Also I think you need to ensure that the operation | |
| 4758 "add begin glyphs; add end glyphs; add text" is atomic and | |
| 4759 can't get interrupted in the middle. If you run off the end | |
| 4760 of the line during that operation, then you keep accumulating | |
| 4761 propagation data until you're done. Otherwise, if the (e.g.) | |
| 4762 there's a begin glyph at a particular position and attempting | |
| 4763 to display that glyph results in window-end being hit and | |
| 4764 propagation data being generated, then the character at that | |
| 4765 position won't be displayed. | |
| 4766 | |
| 4767 #### See also the comment after the end of this loop, below. | |
| 4768 */ | |
| 4769 while (data.pixpos <= data.max_pixpos) | |
| 4770 { | |
| 4771 /* #### This check probably should not be necessary. */ | |
| 826 | 4772 if (data.byte_charpos > byte_string_zv) |
| 428 | 4773 { |
| 4774 /* #### urk! More of this lossage! */ | |
| 826 | 4775 data.byte_charpos--; |
| 428 | 4776 goto done; |
| 4777 } | |
| 4778 | |
| 4779 /* Check for face changes. */ | |
| 826 | 4780 if (initial || (!no_more_frags && data.byte_charpos == data.ef->end)) |
| 428 | 4781 { |
| 819 | 4782 Lisp_Object last_glyph = Qnil; |
| 4783 /* Deal with clipped glyphs that we have already displayed. */ | |
| 4967 | 4784 if (*prop && Dynarr_begin (*prop)->type == PROP_GLYPH) |
| 4785 { | |
| 4786 last_glyph = Dynarr_begin (*prop)->data.p_glyph.glyph; | |
| 819 | 4787 Dynarr_free (*prop); |
| 4788 *prop = 0; | |
| 4789 } | |
| 428 | 4790 /* Now compute the face and begin/end-glyph information. */ |
| 4791 data.findex = | |
| 793 | 4792 /* Remember that the extent-fragment routines deal in |
| 4187 | 4793 Bytexpos's. */ |
| 826 | 4794 extent_fragment_update (w, data.ef, data.byte_charpos, last_glyph); |
| 428 | 4795 /* This is somewhat cheesy but the alternative is to |
| 4187 | 4796 propagate default_face into extent_fragment_update. */ |
| 428 | 4797 if (data.findex == DEFAULT_INDEX) |
| 4798 data.findex = default_face; | |
| 4799 | |
| 4800 get_display_tables (w, data.findex, &face_dt, &window_dt); | |
| 4801 | |
| 826 | 4802 if (data.byte_charpos == data.ef->end) |
| 428 | 4803 no_more_frags = 1; |
| 4804 } | |
| 4805 initial = 0; | |
| 4806 | |
| 4807 /* Determine what is next to be displayed. We first handle any | |
| 4187 | 4808 glyphs returned by glyphs_at_charbpos. If there are no glyphs to |
| 4809 display then we determine what to do based on the character at the | |
| 4810 current buffer position. */ | |
| 428 | 4811 |
| 4812 /* If the current position is covered by an invisible extent, do | |
| 4187 | 4813 nothing (except maybe add some ellipses). |
| 428 | 4814 |
| 4815 #### The behavior of begin and end-glyphs at the edge of an | |
| 4816 invisible extent should be investigated further. This is | |
| 4817 fairly low priority though. */ | |
| 4818 if (data.ef->invisible) | |
| 4819 { | |
| 4820 /* #### Chuck, perhaps you could look at this code? I don't | |
| 4821 really know what I'm doing. */ | |
| 4822 if (*prop) | |
| 4823 { | |
| 4824 Dynarr_free (*prop); | |
| 4825 *prop = 0; | |
| 4826 } | |
| 4827 | |
| 4828 /* The extent fragment code only sets this when we should | |
| 4829 really display the ellipses. It makes sure the ellipses | |
| 4830 don't get displayed more than once in a row. */ | |
| 4831 if (data.ef->invisible_ellipses) | |
| 4832 { | |
| 4833 struct glyph_block gb; | |
| 4834 | |
| 4835 data.ef->invisible_ellipses_already_displayed = 1; | |
| 4836 data.ef->invisible_ellipses = 0; | |
| 4837 gb.extent = Qnil; | |
| 4838 gb.glyph = Vinvisible_text_glyph; | |
| 4839 *prop = add_glyph_rune (&data, &gb, BEGIN_GLYPHS, 0, | |
| 4840 GLYPH_CACHEL (w, INVIS_GLYPH_INDEX)); | |
| 4841 /* Perhaps they shouldn't propagate if the very next thing | |
| 4842 is to display a newline (for compatibility with | |
| 4843 selective-display-ellipses)? Maybe that's too | |
| 4844 abstruse. */ | |
| 4845 if (*prop) | |
| 4846 goto done; | |
| 4847 } | |
| 4848 | |
| 638 | 4849 /* #### What if we're dealing with a display table? */ |
| 428 | 4850 if (data.start_col) |
| 4851 data.start_col--; | |
| 4852 | |
| 826 | 4853 if (data.byte_charpos == byte_string_zv) |
| 428 | 4854 goto done; |
| 4855 else | |
| 826 | 4856 INC_BYTECOUNT (XSTRING_DATA (disp_string), data.byte_charpos); |
| 428 | 4857 } |
| 4858 | |
| 4859 /* If there is propagation data, then it represents the current | |
| 4187 | 4860 buffer position being displayed. Add them and advance the |
| 4861 position counter. This might also add the minibuffer | |
| 4862 prompt. */ | |
| 428 | 4863 else if (*prop) |
| 4864 { | |
| 4865 dl->used_prop_data = 1; | |
| 4866 *prop = add_propagation_runes (prop, &data); | |
| 4867 | |
| 4868 if (*prop) | |
| 4869 goto done; /* gee, a really narrow window */ | |
| 826 | 4870 else if (data.byte_charpos == byte_string_zv) |
| 428 | 4871 goto done; |
| 826 | 4872 else if (data.byte_charpos < 0) |
| 428 | 4873 /* #### urk urk urk! Aborts are not very fun! Fix this please! */ |
| 826 | 4874 data.byte_charpos = 0; |
| 428 | 4875 else |
| 826 | 4876 INC_BYTECOUNT (XSTRING_DATA (disp_string), data.byte_charpos); |
| 428 | 4877 } |
| 4878 | |
| 4879 /* If there are end glyphs, add them to the line. These are | |
| 4880 the end glyphs for the previous run of text. We add them | |
| 4881 here rather than doing them at the end of handling the | |
| 4882 previous run so that glyphs at the beginning and end of | |
| 4883 a line are handled correctly. */ | |
| 4884 else if (Dynarr_length (data.ef->end_glyphs) > 0) | |
| 4885 { | |
| 867 | 4886 data.ch = string_ichar (disp_string, data.byte_charpos); |
| 428 | 4887 *prop = add_glyph_runes (&data, END_GLYPHS); |
| 819 | 4888 |
| 4889 if (*prop) { | |
| 428 | 4890 goto done; |
| 819 | 4891 } |
| 428 | 4892 } |
| 4893 | |
| 4894 /* If there are begin glyphs, add them to the line. */ | |
| 4895 else if (Dynarr_length (data.ef->begin_glyphs) > 0) | |
| 4896 { | |
| 867 | 4897 data.ch = string_ichar (disp_string, data.byte_charpos); |
| 428 | 4898 *prop = add_glyph_runes (&data, BEGIN_GLYPHS); |
| 819 | 4899 |
| 4900 if (*prop) { | |
| 428 | 4901 goto done; |
| 819 | 4902 } |
| 428 | 4903 } |
| 4904 | |
| 4905 /* If at end-of-buffer, we've already processed begin and | |
| 4906 end-glyphs at this point and there's no text to process, | |
| 4907 so we're done. */ | |
| 826 | 4908 else if (data.byte_charpos == byte_string_zv) |
| 428 | 4909 goto done; |
| 4910 | |
| 4911 else | |
| 4912 { | |
| 4913 Lisp_Object entry = Qnil; | |
| 4914 /* Get the character at the current buffer position. */ | |
| 867 | 4915 data.ch = string_ichar (disp_string, data.byte_charpos); |
| 428 | 4916 if (!NILP (face_dt) || !NILP (window_dt)) |
| 4917 entry = display_table_entry (data.ch, face_dt, window_dt); | |
| 4918 | |
| 4919 /* If there is a display table entry for it, hand it off to | |
| 4187 | 4920 add_disp_table_entry_runes and let it worry about it. */ |
| 428 | 4921 if (!NILP (entry) && !EQ (entry, make_char (data.ch))) |
| 4922 { | |
| 4923 *prop = add_disp_table_entry_runes (&data, entry); | |
| 4924 | |
| 4925 if (*prop) | |
| 4926 goto done; | |
| 4927 } | |
| 4928 | |
| 4929 /* Check if we have hit a newline character. If so, add a marker | |
| 4187 | 4930 to the line and end this loop. */ |
| 428 | 4931 else if (data.ch == '\n') |
| 4932 { | |
| 4933 /* We aren't going to be adding an end glyph so give its | |
| 4187 | 4934 space back in order to make sure that the cursor can |
| 4935 fit. */ | |
| 819 | 4936 data.max_pixpos += data.end_glyph_width; |
| 428 | 4937 goto done; |
| 4938 } | |
| 4939 | |
| 4940 /* If the current character is considered to be printable, then | |
| 4187 | 4941 just add it. */ |
| 428 | 4942 else if (data.ch >= printable_min) |
| 4943 { | |
| 867 | 4944 *prop = add_ichar_rune (&data); |
| 428 | 4945 if (*prop) |
| 4946 goto done; | |
| 4947 } | |
| 4948 | |
| 4949 /* If the current character is a tab, determine the next tab | |
| 4187 | 4950 starting position and add a blank rune which extends from the |
| 4951 current pixel position to that starting position. */ | |
| 428 | 4952 else if (data.ch == '\t') |
| 4953 { | |
| 4954 int tab_start_pixpos = data.pixpos; | |
| 4955 int next_tab_start; | |
| 4956 int char_tab_width; | |
| 4957 int prop_width = 0; | |
| 4958 | |
| 4959 if (data.start_col > 1) | |
| 4960 tab_start_pixpos -= (space_width (w) * (data.start_col - 1)); | |
| 4961 | |
| 4962 next_tab_start = | |
| 4963 next_tab_position (w, tab_start_pixpos, | |
| 4964 dl->bounds.left_in + | |
| 4965 data.hscroll_glyph_width_adjust); | |
| 4966 if (next_tab_start > data.max_pixpos) | |
| 4967 { | |
| 4968 prop_width = next_tab_start - data.max_pixpos; | |
| 4969 next_tab_start = data.max_pixpos; | |
| 4970 } | |
| 4971 data.blank_width = next_tab_start - data.pixpos; | |
| 4972 char_tab_width = | |
| 4973 (next_tab_start - tab_start_pixpos) / space_width (w); | |
| 4974 | |
| 4975 *prop = add_blank_rune (&data, w, char_tab_width); | |
| 4976 | |
| 4977 /* add_blank_rune is only supposed to be called with | |
| 819 | 4978 sizes guaranteed to fit in the available space. */ |
| 428 | 4979 assert (!(*prop)); |
| 4980 | |
| 4981 if (prop_width) | |
| 4982 { | |
| 4983 struct prop_block pb; | |
| 4984 *prop = Dynarr_new (prop_block); | |
| 4985 | |
| 4986 pb.type = PROP_BLANK; | |
| 4987 pb.data.p_blank.width = prop_width; | |
| 4988 pb.data.p_blank.findex = data.findex; | |
| 4989 Dynarr_add (*prop, pb); | |
| 4990 | |
| 4991 goto done; | |
| 4992 } | |
| 4993 } | |
| 4994 | |
| 4995 /* If character is a control character, pass it off to | |
| 4187 | 4996 add_control_char_runes. |
| 428 | 4997 |
| 4998 The is_*() routines have undefined results on | |
| 4999 arguments outside of the range [-1, 255]. (This | |
| 5000 often bites people who carelessly use `char' instead | |
| 5001 of `unsigned char'.) | |
| 5002 */ | |
| 867 | 5003 else if (data.ch < 0x100 && iscntrl ((Ibyte) data.ch)) |
| 428 | 5004 { |
| 5005 *prop = add_control_char_runes (&data, b); | |
| 5006 | |
| 5007 if (*prop) | |
| 5008 goto done; | |
| 5009 } | |
| 5010 | |
| 5011 /* If the character is above the ASCII range and we have not | |
| 4187 | 5012 already handled it, then print it as an octal number. */ |
| 428 | 5013 else if (data.ch >= 0200) |
| 5014 { | |
| 5015 *prop = add_octal_runes (&data); | |
| 5016 | |
| 5017 if (*prop) | |
| 5018 goto done; | |
| 5019 } | |
| 5020 | |
| 5021 /* Assume the current character is considered to be printable, | |
| 4187 | 5022 then just add it. */ |
| 428 | 5023 else |
| 5024 { | |
| 867 | 5025 *prop = add_ichar_rune (&data); |
| 428 | 5026 if (*prop) |
| 5027 goto done; | |
| 5028 } | |
| 5029 | |
| 826 | 5030 INC_BYTECOUNT (XSTRING_DATA (disp_string), data.byte_charpos); |
| 428 | 5031 } |
| 5032 } | |
| 5033 | |
| 819 | 5034 done: |
| 428 | 5035 |
| 5036 /* Determine the starting point of the next line if we did not hit the | |
| 5037 end of the buffer. */ | |
| 826 | 5038 if (data.byte_charpos < byte_string_zv) |
| 428 | 5039 { |
| 5040 /* #### This check is not correct. If the line terminated | |
| 5041 due to a begin-glyph or end-glyph hitting window-end, then | |
| 826 | 5042 data.ch will not point to the character at data.byte_charpos. If |
| 428 | 5043 you make the two changes mentioned at the top of this loop, |
| 5044 you should be able to say '(if (*prop))'. That should also | |
| 826 | 5045 make it possible to eliminate the data.byte_charpos < BYTE_BUF_ZV (b) |
| 428 | 5046 check. */ |
| 5047 | |
| 5048 /* The common case is that the line ended because we hit a newline. | |
| 4187 | 5049 In that case, the next character is just the next buffer |
| 5050 position. */ | |
| 428 | 5051 if (data.ch == '\n') |
| 5052 { | |
| 826 | 5053 INC_BYTECOUNT (XSTRING_DATA (disp_string), data.byte_charpos); |
| 428 | 5054 } |
| 5055 | |
| 5056 /* Otherwise we have a buffer line which cannot fit on one display | |
| 4187 | 5057 line. */ |
| 428 | 5058 else |
| 5059 { | |
| 5060 struct glyph_block gb; | |
| 5061 struct glyph_cachel *cachel; | |
| 5062 | |
| 5063 /* If the line is to be truncated then we actually have to look | |
| 4187 | 5064 for the next newline. We also add the end-of-line glyph which |
| 5065 we know will fit because we adjusted the right border before | |
| 5066 we starting laying out the line. */ | |
| 819 | 5067 data.max_pixpos += data.end_glyph_width; |
| 428 | 5068 data.findex = default_face; |
| 5069 gb.extent = Qnil; | |
| 5070 | |
| 5071 if (truncate_win) | |
| 5072 { | |
| 826 | 5073 Bytecount byte_pos; |
| 428 | 5074 |
| 5075 /* Now find the start of the next line. */ | |
| 867 | 5076 byte_pos = byte_find_next_ichar_in_string (disp_string, '\n', |
| 826 | 5077 data.byte_charpos, 1); |
| 428 | 5078 |
| 5079 data.cursor_type = NO_CURSOR; | |
| 826 | 5080 data.byte_charpos = byte_pos; |
| 428 | 5081 gb.glyph = Vtruncation_glyph; |
| 5082 cachel = GLYPH_CACHEL (w, TRUN_GLYPH_INDEX); | |
| 5083 } | |
| 5084 else | |
| 5085 { | |
| 5086 /* The cursor can never be on the continuation glyph. */ | |
| 5087 data.cursor_type = NO_CURSOR; | |
| 5088 | |
| 826 | 5089 /* data.byte_charpos is already at the start of the next line. */ |
| 428 | 5090 |
| 442 | 5091 dl->line_continuation = 1; |
| 428 | 5092 gb.glyph = Vcontinuation_glyph; |
| 5093 cachel = GLYPH_CACHEL (w, CONT_GLYPH_INDEX); | |
| 5094 } | |
| 5095 | |
| 819 | 5096 if (data.end_glyph_width) |
| 428 | 5097 add_glyph_rune (&data, &gb, BEGIN_GLYPHS, 0, cachel); |
| 5098 | |
| 826 | 5099 if (truncate_win && data.byte_charpos == byte_string_zv) |
| 428 | 5100 { |
| 867 | 5101 const Ibyte *endb = itext_n_addr (XSTRING_DATA (disp_string), |
| 826 | 5102 byte_string_zv); |
| 867 | 5103 DEC_IBYTEPTR (endb); |
| 5104 if (itext_ichar (endb) != '\n') | |
| 428 | 5105 { |
| 5106 /* #### Damn this losing shit. */ | |
| 826 | 5107 data.byte_charpos++; |
| 428 | 5108 } |
| 5109 } | |
| 5110 } | |
| 5111 } | |
| 826 | 5112 else if (data.byte_charpos == byte_string_zv) |
| 428 | 5113 { |
| 5114 /* create_text_block () adds a bogus \n marker here which screws | |
| 5115 up subwindow display. Since we never have a cursor in the | |
| 5116 gutter we can safely ignore it. */ | |
| 5117 } | |
| 5118 /* Calculate left whitespace boundary. */ | |
| 5119 { | |
| 5120 int elt = 0; | |
| 5121 | |
| 5122 /* Whitespace past a newline is considered right whitespace. */ | |
| 5123 while (elt < Dynarr_length (db->runes)) | |
| 5124 { | |
| 5125 struct rune *rb = Dynarr_atp (db->runes, elt); | |
| 5126 | |
| 5127 if ((rb->type == RUNE_CHAR && rb->object.chr.ch == ' ') | |
| 5128 || rb->type == RUNE_BLANK) | |
| 5129 { | |
| 5130 dl->bounds.left_white += rb->width; | |
| 5131 elt++; | |
| 5132 } | |
| 5133 else | |
| 5134 elt = Dynarr_length (db->runes); | |
| 5135 } | |
| 5136 } | |
| 5137 | |
| 5138 /* Calculate right whitespace boundary. */ | |
| 5139 { | |
| 5140 int elt = Dynarr_length (db->runes) - 1; | |
| 5141 int done = 0; | |
| 5142 | |
| 5143 while (!done && elt >= 0) | |
| 5144 { | |
| 5145 struct rune *rb = Dynarr_atp (db->runes, elt); | |
| 5146 | |
| 5147 if (!(rb->type == RUNE_CHAR && rb->object.chr.ch < 0x100 | |
| 5148 && isspace (rb->object.chr.ch)) | |
| 5149 && !rb->type == RUNE_BLANK) | |
| 5150 { | |
| 5151 dl->bounds.right_white = rb->xpos + rb->width; | |
| 5152 done = 1; | |
| 5153 } | |
| 5154 | |
| 5155 elt--; | |
| 5156 | |
| 5157 } | |
| 5158 | |
| 5159 /* The line is blank so everything is considered to be right | |
| 5160 whitespace. */ | |
| 5161 if (!done) | |
| 5162 dl->bounds.right_white = dl->bounds.left_in; | |
| 5163 } | |
| 5164 | |
| 5165 /* Set the display blocks bounds. */ | |
| 5166 db->start_pos = dl->bounds.left_in; | |
| 5167 if (Dynarr_length (db->runes)) | |
| 5168 { | |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
5169 struct rune *rb = Dynarr_lastp (db->runes); |
| 428 | 5170 |
| 5171 db->end_pos = rb->xpos + rb->width; | |
| 5172 } | |
| 5173 else | |
| 5174 db->end_pos = dl->bounds.right_white; | |
| 5175 | |
| 819 | 5176 calculate_baseline (&data); |
| 428 | 5177 |
| 5178 dl->ascent = data.new_ascent; | |
| 5179 dl->descent = data.new_descent; | |
| 5180 | |
| 5181 { | |
| 5182 unsigned short ascent = (unsigned short) XINT (w->minimum_line_ascent); | |
| 5183 | |
| 5184 if (dl->ascent < ascent) | |
| 5185 dl->ascent = ascent; | |
| 5186 } | |
| 5187 { | |
| 5188 unsigned short descent = (unsigned short) XINT (w->minimum_line_descent); | |
| 5189 | |
| 5190 if (dl->descent < descent) | |
| 5191 dl->descent = descent; | |
| 5192 } | |
| 5193 | |
| 819 | 5194 calculate_yoffset (dl, db); |
| 5195 | |
| 428 | 5196 dl->cursor_elt = data.cursor_x; |
| 5197 /* #### lossage lossage lossage! Fix this shit! */ | |
| 826 | 5198 if (data.byte_charpos > byte_string_zv) |
| 5199 dl->end_charpos = buffer_or_string_bytexpos_to_charxpos (disp_string, | |
| 5200 byte_string_zv); | |
| 428 | 5201 else |
| 826 | 5202 dl->end_charpos = |
| 5203 buffer_or_string_bytexpos_to_charxpos (disp_string, | |
| 5204 data.byte_charpos) - 1; | |
| 428 | 5205 if (truncate_win) |
| 434 | 5206 data.dl->num_chars = |
| 826 | 5207 string_column_at_point (disp_string, dl->end_charpos, |
| 793 | 5208 b ? XINT (b->tab_width) : 8); |
| 428 | 5209 else |
| 5210 /* This doesn't correctly take into account tabs and control | |
| 5211 characters but if the window isn't being truncated then this | |
| 5212 value isn't going to end up being used anyhow. */ | |
| 826 | 5213 data.dl->num_chars = dl->end_charpos - dl->charpos; |
| 428 | 5214 |
| 5215 /* #### handle horizontally scrolled line with text none of which | |
| 5216 was actually laid out. */ | |
| 5217 | |
| 5218 /* #### handle any remainder of overlay arrow */ | |
| 5219 | |
| 5220 if (*prop == ADD_FAILED) | |
| 5221 *prop = NULL; | |
| 5222 | |
| 5223 if (truncate_win && *prop) | |
| 5224 { | |
| 5225 Dynarr_free (*prop); | |
| 5226 *prop = NULL; | |
| 5227 } | |
| 5228 | |
| 5229 extent_fragment_delete (data.ef); | |
| 5230 | |
| 5231 /* #### If we started at EOB, then make sure we return a value past | |
| 5232 it so that regenerate_window will exit properly. This is bogus. | |
| 5233 The main loop should get fixed so that it isn't necessary to call | |
| 5234 this function if we are already at EOB. */ | |
| 5235 | |
| 826 | 5236 if (data.byte_charpos == byte_string_zv && byte_start_pos == byte_string_zv) |
| 793 | 5237 return string_index_byte_to_char (disp_string, |
| 826 | 5238 data.byte_charpos) + 1; /* Yuck! */ |
| 428 | 5239 else |
| 826 | 5240 return string_index_byte_to_char (disp_string, data.byte_charpos); |
| 428 | 5241 } |
| 5242 | |
| 5243 /* Given a display line and a starting position, ensure that the | |
| 5244 contents of the display line accurately represent the visual | |
| 5245 representation of the buffer contents starting from the given | |
| 5246 position when displayed in the given window. The display line ends | |
| 5247 when the contents of the line reach the right boundary of the given | |
| 434 | 5248 window. |
| 5249 | |
| 428 | 5250 This is very similar to generate_display_line but with the same |
| 5251 limitations as create_string_text_block. I have taken the liberty | |
| 665 | 5252 of fixing the bytebpos stuff though.*/ |
| 5253 | |
| 5254 static Charbpos | |
| 428 | 5255 generate_string_display_line (struct window *w, Lisp_Object disp_string, |
| 5256 struct display_line *dl, | |
| 826 | 5257 Charcount start_pos, |
| 428 | 5258 prop_block_dynarr **prop, |
| 5259 face_index default_face) | |
| 5260 { | |
| 826 | 5261 Charcount ret_charcount; |
| 428 | 5262 |
| 5263 /* you must set bounds before calling this. */ | |
| 434 | 5264 |
| 428 | 5265 /* Reset what this line is using. */ |
| 5266 if (dl->display_blocks) | |
| 5267 Dynarr_reset (dl->display_blocks); | |
| 5268 if (dl->left_glyphs) | |
| 5269 { | |
| 5270 Dynarr_free (dl->left_glyphs); | |
| 5271 dl->left_glyphs = 0; | |
| 5272 } | |
| 5273 if (dl->right_glyphs) | |
| 5274 { | |
| 5275 Dynarr_free (dl->right_glyphs); | |
| 5276 dl->right_glyphs = 0; | |
| 5277 } | |
| 5278 | |
| 5279 /* We aren't generating a modeline at the moment. */ | |
| 5280 dl->modeline = 0; | |
| 5281 | |
| 5282 /* Create a display block for the text region of the line. */ | |
| 826 | 5283 ret_charcount = create_string_text_block (w, disp_string, dl, start_pos, |
| 5284 prop, default_face); | |
| 5285 dl->charpos = start_pos; | |
| 5286 if (dl->end_charpos < dl->charpos) | |
| 5287 dl->end_charpos = dl->charpos; | |
| 428 | 5288 |
| 5289 /* If there are left glyphs associated with any character in the | |
| 5290 text block, then create a display block to handle them. */ | |
| 5291 if (dl->left_glyphs != NULL && Dynarr_length (dl->left_glyphs)) | |
| 5292 create_left_glyph_block (w, dl, 0); | |
| 5293 | |
| 5294 /* If there are right glyphs associated with any character in the | |
| 5295 text block, then create a display block to handle them. */ | |
| 5296 if (dl->right_glyphs != NULL && Dynarr_length (dl->right_glyphs)) | |
| 5297 create_right_glyph_block (w, dl); | |
| 5298 | |
| 826 | 5299 return ret_charcount; |
| 428 | 5300 } |
| 5301 | |
| 2518 | 5302 /* |
| 5303 | |
| 5304 Info on Re-entrancy crashes, with backtraces given: | |
| 5305 | |
| 5306 (Info-goto-node "(internals)Nasty Bugs due to Reentrancy in Redisplay Structures handling QUIT") | |
| 1318 | 5307 */ |
| 5308 | |
| 5309 | |
| 428 | 5310 /* This is ripped off from regenerate_window. All we want to do is |
| 5311 loop through elements in the string creating display lines until we | |
| 5312 have covered the provided area. Simple really. */ | |
| 5313 void | |
| 5314 generate_displayable_area (struct window *w, Lisp_Object disp_string, | |
| 5315 int xpos, int ypos, int width, int height, | |
| 5316 display_line_dynarr* dla, | |
| 826 | 5317 Charcount start_pos, |
| 428 | 5318 face_index default_face) |
| 5319 { | |
| 5320 int yend = ypos + height; | |
| 5321 Charcount s_zv; | |
| 5322 prop_block_dynarr *prop = 0; | |
| 5323 layout_bounds bounds; | |
| 2518 | 5324 int depth = -1; |
| 5325 | |
| 428 | 5326 /* if there's nothing to do then do nothing. code after this assumes |
| 5327 there is something to do. */ | |
| 5328 if (NILP (disp_string)) | |
| 5329 return; | |
| 5330 | |
| 2518 | 5331 /* See comment in regenerate_window() */ |
| 5332 if (!in_display) | |
| 5333 depth = enter_redisplay_critical_section (); | |
| 5334 | |
| 5335 assert (dla); | |
| 5336 Dynarr_reset (dla); | |
| 5337 | |
| 826 | 5338 s_zv = string_char_length (disp_string); |
| 428 | 5339 |
| 5340 bounds.left_out = xpos; | |
| 5341 bounds.right_out = xpos + width; | |
| 5342 /* The inner boundaries mark where the glyph margins are located. */ | |
| 5343 bounds.left_in = bounds.left_out + window_left_margin_width (w); | |
| 5344 bounds.right_in = bounds.right_out - window_right_margin_width (w); | |
| 5345 /* We cannot fully calculate the whitespace boundaries as they | |
| 5346 depend on the contents of the line being displayed. */ | |
| 5347 bounds.left_white = bounds.left_in; | |
| 5348 bounds.right_white = bounds.right_in; | |
| 5349 | |
| 5350 while (ypos < yend) | |
| 5351 { | |
| 5352 struct display_line dl; | |
| 5353 struct display_line *dlp; | |
| 826 | 5354 Charcount next_pos; |
| 428 | 5355 int local; |
| 851 | 5356 int pos_of_dlp = -1; |
| 428 | 5357 |
| 5358 if (Dynarr_length (dla) < Dynarr_largest (dla)) | |
| 5359 { | |
| 851 | 5360 pos_of_dlp = Dynarr_length (dla); |
| 5361 dlp = Dynarr_atp (dla, pos_of_dlp); | |
| 428 | 5362 local = 0; |
| 5363 } | |
| 5364 else | |
| 5365 { | |
| 4207 | 5366 DISPLAY_LINE_INIT (dl); |
| 428 | 5367 dlp = &dl; |
| 5368 local = 1; | |
| 5369 } | |
| 5370 | |
| 5371 dlp->bounds = bounds; | |
| 5372 dlp->offset = 0; | |
| 1318 | 5373 Dynarr_lock (dla); |
| 428 | 5374 next_pos = generate_string_display_line (w, disp_string, dlp, start_pos, |
| 5375 &prop, default_face); | |
| 1318 | 5376 Dynarr_unlock (dla); |
| 428 | 5377 /* we need to make sure that we continue along the line if there |
| 4187 | 5378 is more left to display otherwise we just end up redisplaying |
| 5379 the same chunk over and over again. */ | |
| 428 | 5380 if (next_pos == start_pos && next_pos < s_zv) |
| 5381 start_pos++; | |
| 5382 else | |
| 5383 start_pos = next_pos; | |
| 5384 | |
| 5385 dlp->ypos = ypos + dlp->ascent; | |
| 5386 ypos = dlp->ypos + dlp->descent; | |
| 5387 | |
| 5388 if (ypos > yend) | |
| 5389 { | |
| 5390 int visible_height = dlp->ascent + dlp->descent; | |
| 5391 | |
| 5392 dlp->clip = (ypos - yend); | |
| 5393 visible_height -= dlp->clip; | |
| 5394 | |
| 5395 if (visible_height < VERTICAL_CLIP (w, 1)) | |
| 5396 { | |
| 5397 if (local) | |
| 5398 free_display_line (dlp); | |
| 5399 break; | |
| 5400 } | |
| 5401 } | |
| 5402 else | |
| 5403 dlp->clip = 0; | |
| 5404 | |
|
4418
9bcdf9a3a783
Use Dynarr_increment instead of Dynarr_add when building a line in place.
Jerry James <james@xemacs.org>
parents:
4207
diff
changeset
|
5405 if (pos_of_dlp < 0) |
|
9bcdf9a3a783
Use Dynarr_increment instead of Dynarr_add when building a line in place.
Jerry James <james@xemacs.org>
parents:
4207
diff
changeset
|
5406 Dynarr_add (dla, *dlp); |
|
9bcdf9a3a783
Use Dynarr_increment instead of Dynarr_add when building a line in place.
Jerry James <james@xemacs.org>
parents:
4207
diff
changeset
|
5407 else if (pos_of_dlp == Dynarr_length (dla)) |
|
9bcdf9a3a783
Use Dynarr_increment instead of Dynarr_add when building a line in place.
Jerry James <james@xemacs.org>
parents:
4207
diff
changeset
|
5408 Dynarr_increment (dla); |
|
9bcdf9a3a783
Use Dynarr_increment instead of Dynarr_add when building a line in place.
Jerry James <james@xemacs.org>
parents:
4207
diff
changeset
|
5409 else |
|
9bcdf9a3a783
Use Dynarr_increment instead of Dynarr_add when building a line in place.
Jerry James <james@xemacs.org>
parents:
4207
diff
changeset
|
5410 ABORT (); |
| 428 | 5411 |
| 5412 /* #### This type of check needs to be done down in the | |
| 5413 generate_display_line call. */ | |
| 5414 if (start_pos >= s_zv) | |
| 5415 break; | |
| 5416 } | |
| 5417 | |
| 5418 if (prop) | |
| 5419 Dynarr_free (prop); | |
| 2518 | 5420 |
| 5421 if (depth >= 0) | |
| 5422 exit_redisplay_critical_section (depth); | |
| 428 | 5423 } |
| 5424 | |
| 5425 | |
| 5426 /***************************************************************************/ | |
| 5427 /* */ | |
| 5428 /* window-regeneration routines */ | |
| 5429 /* */ | |
| 5430 /***************************************************************************/ | |
| 5431 | |
| 5432 /* For a given window and starting position in the buffer it contains, | |
| 5433 ensure that the TYPE display lines accurately represent the | |
| 5434 presentation of the window. We pass the buffer instead of getting | |
| 5435 it from the window since redisplay_window may have temporarily | |
| 5436 changed it to the echo area buffer. */ | |
| 5437 | |
| 5438 static void | |
| 2518 | 5439 regenerate_window (struct window *w, Charbpos start_pos, Charbpos point, |
| 5440 int type) | |
| 428 | 5441 { |
| 5442 struct frame *f = XFRAME (w->frame); | |
| 5443 struct buffer *b = XBUFFER (w->buffer); | |
| 5444 int ypos = WINDOW_TEXT_TOP (w); | |
| 5445 int yend; /* set farther down */ | |
| 5446 int yclip = WINDOW_TEXT_TOP_CLIP (w); | |
| 442 | 5447 int force; |
| 2518 | 5448 int depth = -1; |
| 428 | 5449 |
| 5450 prop_block_dynarr *prop; | |
| 5451 layout_bounds bounds; | |
| 5452 display_line_dynarr *dla; | |
| 5453 int need_modeline; | |
| 5454 | |
| 5455 /* The lines had better exist by this point. */ | |
| 5456 if (!(dla = window_display_lines (w, type))) | |
| 2500 | 5457 ABORT (); |
| 2518 | 5458 |
| 5459 if (!in_display) | |
| 5460 depth = enter_redisplay_critical_section (); | |
| 5461 | |
| 5462 /* This is one spot where a re-entrancy crash will occur, due to a check | |
| 5463 in the dynarr to make sure it isn't "locked" */ | |
| 5464 /* | |
| 5465 | |
| 5466 Info on Re-entrancy crashes, with backtraces given: | |
| 5467 | |
| 5468 (Info-goto-node "(internals)Nasty Bugs due to Reentrancy in Redisplay Structures handling QUIT") | |
| 5469 */ | |
| 5470 | |
| 428 | 5471 Dynarr_reset (dla); |
| 5472 w->max_line_len = 0; | |
| 5473 | |
| 4968 | 5474 /* Added 2-1-10 -- we should never have empty face or glyph cachels |
| 5475 because we initialized them at startup and the only way to reduce | |
| 5476 their number is through calling reset_face_cachels() or | |
| 5477 reset_glyph_cachels(), which as a side effect sets up a number of | |
| 5478 standard entries */ | |
| 5479 assert (Dynarr_length (w->face_cachels)); | |
| 5480 assert (Dynarr_length (w->glyph_cachels)); | |
| 5481 | |
| 5482 #if 0 | |
| 5483 /* #### Delete this code sometime later than 2-1-10 when we're sure it's | |
| 5484 not needed */ | |
| 428 | 5485 /* Normally these get updated in redisplay_window but it is possible |
| 5486 for this function to get called from some other points where that | |
| 5487 update may not have occurred. This acts as a safety check. */ | |
| 5488 if (!Dynarr_length (w->face_cachels)) | |
| 5489 reset_face_cachels (w); | |
| 5490 if (!Dynarr_length (w->glyph_cachels)) | |
| 5491 reset_glyph_cachels (w); | |
| 4968 | 5492 #endif |
| 428 | 5493 |
| 5494 Fset_marker (w->start[type], make_int (start_pos), w->buffer); | |
| 5495 Fset_marker (w->pointm[type], make_int (point), w->buffer); | |
| 5496 w->last_point_x[type] = -1; | |
| 5497 w->last_point_y[type] = -1; | |
| 5498 | |
| 5499 /* Make sure a modeline is in the structs if needed. */ | |
| 5500 need_modeline = ensure_modeline_generated (w, type); | |
| 5501 | |
| 5502 /* Wait until here to set this so that the structs have a modeline | |
| 5503 generated in the case where one didn't exist. */ | |
| 5504 yend = WINDOW_TEXT_BOTTOM (w); | |
| 5505 | |
| 5506 bounds = calculate_display_line_boundaries (w, 0); | |
| 5507 | |
| 5508 /* 97/3/14 jhod: stuff added here to support pre-prompts (used for input systems) */ | |
| 5509 if (MINI_WINDOW_P (w) | |
| 5510 && (!NILP (Vminibuf_prompt) || !NILP (Vminibuf_preprompt)) | |
| 5511 && !echo_area_active (f) | |
| 5512 && start_pos == BUF_BEGV (b)) | |
| 5513 { | |
| 5514 struct prop_block pb; | |
| 5515 Lisp_Object string; | |
| 5516 prop = Dynarr_new (prop_block); | |
| 5517 | |
| 5518 string = concat2(Vminibuf_preprompt, Vminibuf_prompt); | |
| 5519 pb.type = PROP_MINIBUF_PROMPT; | |
| 5520 pb.data.p_string.str = XSTRING_DATA(string); | |
| 5521 pb.data.p_string.len = XSTRING_LENGTH(string); | |
| 5522 Dynarr_add (prop, pb); | |
| 5523 } | |
| 5524 else | |
| 5525 prop = 0; | |
| 5526 | |
| 442 | 5527 /* When we are computing things for scrolling purposes, make |
| 5528 sure at least one line is always generated */ | |
| 5529 force = (type == CMOTION_DISP); | |
| 5530 | |
| 5531 /* Make sure this is set always */ | |
| 5532 /* Note the conversion at end */ | |
| 5533 w->window_end_pos[type] = start_pos; | |
| 5534 while (ypos < yend || force) | |
| 428 | 5535 { |
| 5536 struct display_line dl; | |
| 5537 struct display_line *dlp; | |
| 5538 int local; | |
| 851 | 5539 int pos_of_dlp = -1; |
| 428 | 5540 |
| 5541 if (Dynarr_length (dla) < Dynarr_largest (dla)) | |
| 5542 { | |
| 851 | 5543 pos_of_dlp = Dynarr_length (dla); |
| 5544 dlp = Dynarr_atp (dla, pos_of_dlp); | |
| 428 | 5545 local = 0; |
| 5546 } | |
| 5547 else | |
| 5548 { | |
| 4207 | 5549 DISPLAY_LINE_INIT (dl); |
| 428 | 5550 dlp = &dl; |
| 5551 local = 1; | |
| 5552 } | |
| 5553 | |
| 5554 dlp->bounds = bounds; | |
| 5555 dlp->offset = 0; | |
| 1318 | 5556 Dynarr_lock (dla); |
| 428 | 5557 start_pos = generate_display_line (w, dlp, 1, start_pos, &prop, type); |
| 1318 | 5558 Dynarr_unlock (dla); |
| 428 | 5559 |
| 5560 if (yclip > dlp->ascent) | |
| 5561 { | |
| 5562 /* this should never happen, but if it does just display the | |
| 5563 whole line */ | |
| 5564 yclip = 0; | |
| 5565 } | |
| 5566 | |
| 5567 dlp->ypos = (ypos + dlp->ascent) - yclip; | |
| 5568 ypos = dlp->ypos + dlp->descent; | |
| 5569 | |
| 5570 /* See if we've been asked to start midway through a line, for | |
| 4187 | 5571 partial display line scrolling. */ |
| 434 | 5572 if (yclip) |
| 428 | 5573 { |
| 5574 dlp->top_clip = yclip; | |
| 5575 yclip = 0; | |
| 5576 } | |
| 5577 else | |
| 5578 dlp->top_clip = 0; | |
| 5579 | |
| 5580 if (ypos > yend) | |
| 5581 { | |
| 5582 int visible_height = dlp->ascent + dlp->descent; | |
| 5583 | |
| 5584 dlp->clip = (ypos - yend); | |
| 5585 /* Although this seems strange we could have a single very | |
| 5586 tall line visible for which we need to account for both | |
| 5587 the top clip and the bottom clip. */ | |
| 5588 visible_height -= (dlp->clip + dlp->top_clip); | |
| 5589 | |
| 442 | 5590 if (visible_height < VERTICAL_CLIP (w, 1) && !force) |
| 428 | 5591 { |
| 5592 if (local) | |
| 5593 free_display_line (dlp); | |
| 5594 break; | |
| 5595 } | |
| 5596 } | |
| 5597 else | |
| 5598 dlp->clip = 0; | |
| 5599 | |
| 5600 if (dlp->cursor_elt != -1) | |
| 5601 { | |
| 5602 /* #### This check is steaming crap. Have to get things | |
| 4187 | 5603 fixed so when create_text_block hits EOB, we're done, |
| 5604 period. */ | |
| 428 | 5605 if (w->last_point_x[type] == -1) |
| 5606 { | |
| 5607 w->last_point_x[type] = dlp->cursor_elt; | |
| 5608 w->last_point_y[type] = Dynarr_length (dla); | |
| 5609 } | |
| 5610 else | |
| 5611 { | |
| 5612 /* #### This means that we've added a cursor at EOB | |
| 4187 | 5613 twice. Yuck oh yuck. */ |
| 1318 | 5614 struct display_block *db; |
| 5615 | |
| 5616 Dynarr_lock (dla); | |
| 5617 db = get_display_block_from_line (dlp, TEXT); | |
| 5618 Dynarr_unlock (dla); | |
| 428 | 5619 |
| 5620 Dynarr_atp (db->runes, dlp->cursor_elt)->cursor_type = NO_CURSOR; | |
| 5621 dlp->cursor_elt = -1; | |
| 5622 } | |
| 5623 } | |
| 5624 | |
| 5625 if (dlp->num_chars > w->max_line_len) | |
| 5626 w->max_line_len = dlp->num_chars; | |
| 5627 | |
|
4418
9bcdf9a3a783
Use Dynarr_increment instead of Dynarr_add when building a line in place.
Jerry James <james@xemacs.org>
parents:
4207
diff
changeset
|
5628 if (pos_of_dlp < 0) |
|
9bcdf9a3a783
Use Dynarr_increment instead of Dynarr_add when building a line in place.
Jerry James <james@xemacs.org>
parents:
4207
diff
changeset
|
5629 Dynarr_add (dla, *dlp); |
|
9bcdf9a3a783
Use Dynarr_increment instead of Dynarr_add when building a line in place.
Jerry James <james@xemacs.org>
parents:
4207
diff
changeset
|
5630 else if (pos_of_dlp == Dynarr_length (dla)) |
|
9bcdf9a3a783
Use Dynarr_increment instead of Dynarr_add when building a line in place.
Jerry James <james@xemacs.org>
parents:
4207
diff
changeset
|
5631 Dynarr_increment (dla); |
|
9bcdf9a3a783
Use Dynarr_increment instead of Dynarr_add when building a line in place.
Jerry James <james@xemacs.org>
parents:
4207
diff
changeset
|
5632 else |
|
9bcdf9a3a783
Use Dynarr_increment instead of Dynarr_add when building a line in place.
Jerry James <james@xemacs.org>
parents:
4207
diff
changeset
|
5633 ABORT (); |
| 428 | 5634 |
| 5635 /* #### This isn't right, but it is close enough for now. */ | |
| 5636 w->window_end_pos[type] = start_pos; | |
| 5637 | |
| 5638 /* #### This type of check needs to be done down in the | |
| 5639 generate_display_line call. */ | |
| 5640 if (start_pos > BUF_ZV (b)) | |
| 5641 break; | |
| 442 | 5642 |
| 5643 force = 0; | |
| 428 | 5644 } |
| 5645 | |
| 5646 if (prop) | |
| 5647 Dynarr_free (prop); | |
| 5648 | |
| 5649 /* #### More not quite right, but close enough. */ | |
| 442 | 5650 /* Ben sez: apparently window_end_pos[] is measured |
| 428 | 5651 as the number of characters between the window end and the |
| 5652 end of the buffer? This seems rather weirdo. What's | |
| 442 | 5653 the justification for this? |
| 5654 | |
| 5655 JV sez: Because BUF_Z (b) would be a good initial value, however | |
| 5656 that can change. This representation allows initalizing with 0. | |
| 5657 */ | |
| 428 | 5658 w->window_end_pos[type] = BUF_Z (b) - w->window_end_pos[type]; |
| 5659 | |
| 5660 if (need_modeline) | |
| 5661 { | |
| 5662 /* We know that this is the right thing to use because we put it | |
| 4187 | 5663 there when we first started working in this function. */ |
| 4967 | 5664 generate_modeline (w, Dynarr_begin (dla), type); |
| 428 | 5665 } |
| 2518 | 5666 |
| 5667 if (depth >= 0) | |
| 5668 exit_redisplay_critical_section (depth); | |
| 428 | 5669 } |
| 5670 | |
| 826 | 5671 #define REGEN_INC_FIND_START_END \ |
| 5672 do { \ | |
| 5673 /* Determine start and end of lines. */ \ | |
| 5674 if (!Dynarr_length (cdla)) \ | |
| 5675 return 0; \ | |
| 5676 else \ | |
| 5677 { \ | |
| 4967 | 5678 if (Dynarr_begin (cdla)->modeline && Dynarr_begin (ddla)->modeline) \ |
| 826 | 5679 { \ |
| 5680 dla_start = 1; \ | |
| 5681 } \ | |
| 4967 | 5682 else if (!Dynarr_begin (cdla)->modeline \ |
| 5683 && !Dynarr_begin (ddla)->modeline) \ | |
| 826 | 5684 { \ |
| 5685 dla_start = 0; \ | |
| 5686 } \ | |
| 5687 else \ | |
| 2500 | 5688 ABORT (); /* structs differ */ \ |
| 826 | 5689 \ |
| 5690 dla_end = Dynarr_length (cdla) - 1; \ | |
| 5691 } \ | |
| 5692 \ | |
| 5693 start_pos = (Dynarr_atp (cdla, dla_start)->charpos \ | |
| 5694 + Dynarr_atp (cdla, dla_start)->offset); \ | |
| 5695 /* If this isn't true, then startp has changed and we need to do a \ | |
| 5696 full regen. */ \ | |
| 5697 if (startp != start_pos) \ | |
| 5698 return 0; \ | |
| 5699 \ | |
| 5700 /* Point is outside the visible region so give up. */ \ | |
| 5701 if (pointm < start_pos) \ | |
| 5702 return 0; \ | |
| 5703 \ | |
| 428 | 5704 } while (0) |
| 5705 | |
| 5706 /* This attempts to incrementally update the display structures. It | |
| 5707 returns a boolean indicating success or failure. This function is | |
| 5708 very similar to regenerate_window_incrementally and is in fact only | |
| 5709 called from that function. However, because of the nature of the | |
| 5710 changes it deals with it sometimes makes different assumptions | |
| 5711 which can lead to success which are much more difficult to make | |
| 5712 when dealing with buffer changes. */ | |
| 5713 | |
| 5714 static int | |
| 665 | 5715 regenerate_window_extents_only_changed (struct window *w, Charbpos startp, |
| 5716 Charbpos pointm, | |
| 428 | 5717 Charcount beg_unchanged, |
| 5718 Charcount end_unchanged) | |
| 5719 { | |
| 5720 struct buffer *b = XBUFFER (w->buffer); | |
| 5721 display_line_dynarr *cdla = window_display_lines (w, CURRENT_DISP); | |
| 5722 display_line_dynarr *ddla = window_display_lines (w, DESIRED_DISP); | |
| 5723 | |
| 5724 int dla_start = 0; | |
| 5725 int dla_end, line; | |
| 5726 int first_line, last_line; | |
| 665 | 5727 Charbpos start_pos; |
| 428 | 5728 /* Don't define this in the loop where it is used because we |
| 5729 definitely want its value to survive between passes. */ | |
| 5730 prop_block_dynarr *prop = NULL; | |
| 5731 | |
| 5732 /* If we don't have any buffer change recorded but the modiff flag has | |
| 5733 been incremented, then fail. I'm not sure of the exact circumstances | |
| 5734 under which this can happen, but I believe that it is probably a | |
| 5735 reasonable happening. */ | |
| 5736 if (!point_visible (w, pointm, CURRENT_DISP) | |
| 5737 || XINT (w->last_modified[CURRENT_DISP]) < BUF_MODIFF (b)) | |
| 5738 return 0; | |
| 5739 | |
| 5740 /* If the cursor is moved we attempt to update it. If we succeed we | |
| 5741 go ahead and proceed with the optimization attempt. */ | |
| 5742 if (!EQ (Fmarker_buffer (w->last_point[CURRENT_DISP]), w->buffer) | |
| 5743 || pointm != marker_position (w->last_point[CURRENT_DISP])) | |
| 5744 { | |
| 5745 struct frame *f = XFRAME (w->frame); | |
| 5746 struct device *d = XDEVICE (f->device); | |
| 5747 struct frame *sel_f = device_selected_frame (d); | |
| 5748 int success = 0; | |
| 5749 | |
| 5750 if (w->last_point_x[CURRENT_DISP] != -1 | |
| 5751 && w->last_point_y[CURRENT_DISP] != -1) | |
| 5752 { | |
| 5753 | |
| 5754 if (redisplay_move_cursor (w, pointm, WINDOW_TTY_P (w))) | |
| 5755 { | |
| 5756 /* Always regenerate the modeline in case it is | |
| 4187 | 5757 displaying the current line or column. */ |
| 428 | 5758 regenerate_modeline (w); |
| 5759 success = 1; | |
| 5760 } | |
| 5761 } | |
| 5762 else if (w != XWINDOW (FRAME_SELECTED_WINDOW (sel_f))) | |
| 5763 { | |
| 5764 if (f->modeline_changed) | |
| 5765 regenerate_modeline (w); | |
| 5766 success = 1; | |
| 5767 } | |
| 5768 | |
| 5769 if (!success) | |
| 5770 return 0; | |
| 5771 } | |
| 5772 | |
| 5773 if (beg_unchanged == -1 && end_unchanged == -1) | |
| 5774 return 1; | |
| 5775 | |
| 5776 /* assert: There are no buffer modifications or they are all below the | |
| 5777 visible region. We assume that regenerate_window_incrementally has | |
| 5778 not called us unless this is true. */ | |
| 5779 | |
| 5780 REGEN_INC_FIND_START_END; | |
| 5781 | |
| 5782 /* If the changed are starts before the visible area, give up. */ | |
| 5783 if (beg_unchanged < startp) | |
| 5784 return 0; | |
| 5785 | |
| 5786 /* Find what display line the extent changes first affect. */ | |
| 5787 line = dla_start; | |
| 5788 while (line <= dla_end) | |
| 5789 { | |
| 5790 struct display_line *dl = Dynarr_atp (cdla, line); | |
| 826 | 5791 Charbpos lstart = dl->charpos + dl->offset; |
| 5792 Charbpos lend = dl->end_charpos + dl->offset; | |
| 428 | 5793 |
| 5794 if (beg_unchanged >= lstart && beg_unchanged <= lend) | |
| 5795 break; | |
| 5796 | |
| 5797 line++; | |
| 5798 } | |
| 5799 | |
| 5800 /* If the changes are below the visible area then if point hasn't | |
| 5801 moved return success otherwise fail in order to be safe. */ | |
| 5802 if (line > dla_end) | |
| 5803 { | |
| 5804 if (EQ (Fmarker_buffer (w->last_point[CURRENT_DISP]), w->buffer) | |
| 5805 && pointm == marker_position (w->last_point[CURRENT_DISP])) | |
| 5806 return 1; | |
| 5807 else | |
| 5808 return 0; | |
| 5809 } | |
| 5810 | |
| 5811 /* At this point we know what line the changes first affect. We now | |
| 5812 begin redrawing lines as long as we are still in the affected | |
| 5813 region and the line's size and positioning don't change. | |
| 5814 Otherwise we fail. If we fail we will have altered the desired | |
| 5815 structs which could lead to an assertion failure. However, if we | |
| 5816 fail the next thing that is going to happen is a full regen so we | |
| 5817 will actually end up being safe. */ | |
| 5818 w->last_modified[DESIRED_DISP] = make_int (BUF_MODIFF (b)); | |
| 5819 w->last_facechange[DESIRED_DISP] = make_int (BUF_FACECHANGE (b)); | |
| 5820 Fset_marker (w->last_start[DESIRED_DISP], make_int (startp), w->buffer); | |
| 5821 Fset_marker (w->last_point[DESIRED_DISP], make_int (pointm), w->buffer); | |
| 5822 | |
| 5823 first_line = last_line = line; | |
| 5824 while (line <= dla_end) | |
| 5825 { | |
| 2286 | 5826 Charbpos old_start, old_end; |
| 428 | 5827 struct display_line *cdl = Dynarr_atp (cdla, line); |
| 5828 struct display_line *ddl = Dynarr_atp (ddla, line); | |
| 5829 struct display_block *db; | |
| 5830 int initial_size; | |
| 5831 | |
| 826 | 5832 assert (cdl->charpos == ddl->charpos); |
| 5833 assert (cdl->end_charpos == ddl->end_charpos); | |
| 428 | 5834 assert (cdl->offset == ddl->offset); |
| 5835 | |
| 5836 db = get_display_block_from_line (ddl, TEXT); | |
| 5837 initial_size = Dynarr_length (db->runes); | |
| 826 | 5838 old_start = ddl->charpos + ddl->offset; |
| 5839 old_end = ddl->end_charpos + ddl->offset; | |
| 428 | 5840 |
| 5841 /* If this is the first line being updated and it used | |
| 4187 | 5842 propagation data, fail. Otherwise we'll be okay because |
| 5843 we'll have the necessary propagation data. */ | |
| 428 | 5844 if (line == first_line && ddl->used_prop_data) |
| 5845 return 0; | |
| 5846 | |
| 2286 | 5847 generate_display_line (w, ddl, 0, ddl->charpos + ddl->offset, |
| 5848 &prop, DESIRED_DISP); | |
| 428 | 5849 ddl->offset = 0; |
| 5850 | |
| 5851 /* #### If there is propagated stuff the fail. We could | |
| 4187 | 5852 probably actually deal with this if the line had propagated |
| 5853 information when originally created by a full | |
| 5854 regeneration. */ | |
| 428 | 5855 if (prop) |
| 5856 { | |
| 5857 Dynarr_free (prop); | |
| 5858 return 0; | |
| 5859 } | |
| 5860 | |
| 5861 /* If any line position parameters have changed or a | |
| 4187 | 5862 cursor has disappeared or disappeared, fail. */ |
| 428 | 5863 db = get_display_block_from_line (ddl, TEXT); |
| 5864 if (cdl->ypos != ddl->ypos | |
| 5865 || cdl->ascent != ddl->ascent | |
| 5866 || cdl->descent != ddl->descent | |
| 5867 || cdl->top_clip != ddl->top_clip | |
| 5868 || (cdl->cursor_elt != -1 && ddl->cursor_elt == -1) | |
| 5869 || (cdl->cursor_elt == -1 && ddl->cursor_elt != -1) | |
| 826 | 5870 || old_start != ddl->charpos |
| 5871 || old_end != ddl->end_charpos | |
| 428 | 5872 || initial_size != Dynarr_length (db->runes)) |
| 5873 { | |
| 5874 return 0; | |
| 5875 } | |
| 5876 | |
| 5877 if (ddl->cursor_elt != -1) | |
| 5878 { | |
| 5879 w->last_point_x[DESIRED_DISP] = ddl->cursor_elt; | |
| 5880 w->last_point_y[DESIRED_DISP] = line; | |
| 5881 } | |
| 5882 | |
| 5883 last_line = line; | |
| 5884 | |
| 5885 /* If the extent changes end on the line we just updated then | |
| 4187 | 5886 we're done. Otherwise go on to the next line. */ |
| 826 | 5887 if (end_unchanged <= ddl->end_charpos) |
| 428 | 5888 break; |
| 5889 else | |
| 5890 line++; | |
| 5891 } | |
| 5892 | |
| 5893 redisplay_update_line (w, first_line, last_line, 1); | |
| 5894 return 1; | |
| 5895 } | |
| 5896 | |
| 5897 /* Attempt to update the display data structures based on knowledge of | |
| 5898 the changed region in the buffer. Returns a boolean indicating | |
| 5899 success or failure. If this function returns a failure then a | |
| 5900 regenerate_window _must_ be performed next in order to maintain | |
| 5901 invariants located here. */ | |
| 5902 | |
| 5903 static int | |
| 665 | 5904 regenerate_window_incrementally (struct window *w, Charbpos startp, |
| 5905 Charbpos pointm) | |
| 428 | 5906 { |
| 5907 struct buffer *b = XBUFFER (w->buffer); | |
| 5908 display_line_dynarr *cdla = window_display_lines (w, CURRENT_DISP); | |
| 5909 display_line_dynarr *ddla = window_display_lines (w, DESIRED_DISP); | |
| 5910 Charcount beg_unchanged, end_unchanged; | |
| 5911 Charcount extent_beg_unchanged, extent_end_unchanged; | |
| 5912 | |
| 5913 int dla_start = 0; | |
| 5914 int dla_end, line; | |
| 665 | 5915 Charbpos start_pos; |
| 428 | 5916 |
| 5917 /* If this function is called, the current and desired structures | |
| 5918 had better be identical. If they are not, then that is a bug. */ | |
| 5919 assert (Dynarr_length (cdla) == Dynarr_length (ddla)); | |
| 5920 | |
| 5921 /* We don't handle minibuffer windows yet. The minibuffer prompt | |
| 5922 screws us up. */ | |
| 5923 if (MINI_WINDOW_P (w)) | |
| 5924 return 0; | |
| 5925 | |
| 5926 extent_beg_unchanged = BUF_EXTENT_BEGIN_UNCHANGED (b); | |
| 5927 extent_end_unchanged = (BUF_EXTENT_END_UNCHANGED (b) == -1 | |
| 5928 ? -1 | |
| 5929 : BUF_Z (b) - BUF_EXTENT_END_UNCHANGED (b)); | |
| 5930 | |
| 5931 /* If nothing has changed in the buffer, then make sure point is ok | |
| 5932 and succeed. */ | |
| 5933 if (BUF_BEGIN_UNCHANGED (b) == -1 && BUF_END_UNCHANGED (b) == -1) | |
| 5934 return regenerate_window_extents_only_changed (w, startp, pointm, | |
| 5935 extent_beg_unchanged, | |
| 5936 extent_end_unchanged); | |
| 5937 | |
| 5938 /* We can't deal with deleted newlines. */ | |
| 5939 if (BUF_NEWLINE_WAS_DELETED (b)) | |
| 5940 return 0; | |
| 5941 | |
| 5942 beg_unchanged = BUF_BEGIN_UNCHANGED (b); | |
| 5943 end_unchanged = (BUF_END_UNCHANGED (b) == -1 | |
| 5944 ? -1 | |
| 5945 : BUF_Z (b) - BUF_END_UNCHANGED (b)); | |
| 5946 | |
| 5947 REGEN_INC_FIND_START_END; | |
| 5948 | |
| 5949 /* If the changed area starts before the visible area, give up. */ | |
| 5950 if (beg_unchanged < startp) | |
| 5951 return 0; | |
| 5952 | |
| 5953 /* Find what display line the buffer changes first affect. */ | |
| 5954 line = dla_start; | |
| 5955 while (line <= dla_end) | |
| 5956 { | |
| 5957 struct display_line *dl = Dynarr_atp (cdla, line); | |
| 826 | 5958 Charbpos lstart = dl->charpos + dl->offset; |
| 5959 Charbpos lend = dl->end_charpos + dl->offset; | |
| 428 | 5960 |
| 5961 if (beg_unchanged >= lstart && beg_unchanged <= lend) | |
| 5962 break; | |
| 5963 | |
| 5964 line++; | |
| 5965 } | |
| 5966 | |
| 5967 /* If the changes are below the visible area then if point hasn't | |
| 5968 moved return success otherwise fail in order to be safe. */ | |
| 5969 if (line > dla_end) | |
| 5970 return regenerate_window_extents_only_changed (w, startp, pointm, | |
| 5971 extent_beg_unchanged, | |
| 5972 extent_end_unchanged); | |
| 5973 else | |
| 5974 /* At this point we know what line the changes first affect. We | |
| 5975 now redraw that line. If the changes are contained within it | |
| 5976 we are going to succeed and can update just that one line. | |
| 5977 Otherwise we fail. If we fail we will have altered the desired | |
| 5978 structs which could lead to an assertion failure. However, if | |
| 5979 we fail the next thing that is going to happen is a full regen | |
| 5980 so we will actually end up being safe. */ | |
| 5981 { | |
| 5982 prop_block_dynarr *prop = NULL; | |
| 5983 struct display_line *cdl = Dynarr_atp (cdla, line); | |
| 5984 struct display_line *ddl = Dynarr_atp (ddla, line); | |
| 5985 | |
| 826 | 5986 assert (cdl->charpos == ddl->charpos); |
| 5987 assert (cdl->end_charpos == ddl->end_charpos); | |
| 428 | 5988 assert (cdl->offset == ddl->offset); |
| 5989 | |
| 442 | 5990 /* If the line continues to next display line, fail. */ |
| 5991 if (ddl->line_continuation) | |
| 5992 return 0; | |
| 428 | 5993 |
| 5994 /* If the line was generated using propagation data, fail. */ | |
| 5995 if (ddl->used_prop_data) | |
| 5996 return 0; | |
| 5997 | |
| 2286 | 5998 generate_display_line (w, ddl, 0, ddl->charpos + ddl->offset, |
| 5999 &prop, DESIRED_DISP); | |
| 428 | 6000 ddl->offset = 0; |
| 6001 | |
| 6002 /* If there is propagated stuff then it is pretty much a | |
| 4187 | 6003 guarantee that more than just the one line is affected. */ |
| 428 | 6004 if (prop) |
| 6005 { | |
| 6006 Dynarr_free (prop); | |
| 6007 return 0; | |
| 6008 } | |
| 6009 | |
| 442 | 6010 /* If the line continues to next display line, fail. */ |
| 6011 if (ddl->line_continuation) | |
| 6012 return 0; | |
| 428 | 6013 |
| 6014 /* If any line position parameters have changed or a | |
| 4187 | 6015 cursor has disappeared or disappeared, fail. */ |
| 428 | 6016 if (cdl->ypos != ddl->ypos |
| 6017 || cdl->ascent != ddl->ascent | |
| 6018 || cdl->descent != ddl->descent | |
| 6019 || cdl->top_clip != ddl->top_clip | |
| 6020 || (cdl->cursor_elt != -1 && ddl->cursor_elt == -1) | |
| 6021 || (cdl->cursor_elt == -1 && ddl->cursor_elt != -1)) | |
| 6022 { | |
| 6023 return 0; | |
| 6024 } | |
| 6025 | |
| 6026 /* If the changed area also ends on this line, then we may be in | |
| 4187 | 6027 business. Update everything and return success. */ |
| 826 | 6028 if (end_unchanged >= ddl->charpos && end_unchanged <= ddl->end_charpos) |
| 428 | 6029 { |
| 6030 w->last_modified[DESIRED_DISP] = make_int (BUF_MODIFF (b)); | |
| 6031 w->last_facechange[DESIRED_DISP] = make_int (BUF_FACECHANGE (b)); | |
| 6032 Fset_marker (w->last_start[DESIRED_DISP], make_int (startp), | |
| 6033 w->buffer); | |
| 6034 Fset_marker (w->last_point[DESIRED_DISP], make_int (pointm), | |
| 6035 w->buffer); | |
| 6036 | |
| 6037 if (ddl->cursor_elt != -1) | |
| 6038 { | |
| 6039 w->last_point_x[DESIRED_DISP] = ddl->cursor_elt; | |
| 6040 w->last_point_y[DESIRED_DISP] = line; | |
| 6041 } | |
| 6042 | |
| 6043 redisplay_update_line (w, line, line, 1); | |
| 6044 regenerate_modeline (w); | |
| 6045 | |
| 6046 /* #### For now we just flush the cache until this has been | |
| 4187 | 6047 tested. After that is done, this should correct the |
| 6048 cache directly. */ | |
| 428 | 6049 Dynarr_reset (w->line_start_cache); |
| 6050 | |
| 6051 /* Adjust the extent changed boundaries to remove any | |
| 4187 | 6052 overlap with the buffer changes since we've just |
| 6053 successfully updated that area. */ | |
| 428 | 6054 if (extent_beg_unchanged != -1 |
| 6055 && extent_beg_unchanged >= beg_unchanged | |
| 6056 && extent_beg_unchanged < end_unchanged) | |
| 6057 extent_beg_unchanged = end_unchanged; | |
| 6058 | |
| 6059 if (extent_end_unchanged != -1 | |
| 6060 && extent_end_unchanged >= beg_unchanged | |
| 6061 && extent_end_unchanged < end_unchanged) | |
| 6062 extent_end_unchanged = beg_unchanged - 1; | |
| 6063 | |
| 6064 if (extent_end_unchanged <= extent_beg_unchanged) | |
| 6065 extent_beg_unchanged = extent_end_unchanged = -1; | |
| 6066 | |
| 6067 /* This could lead to odd results if it fails, but since the | |
| 4187 | 6068 buffer changes update succeeded this probably will to. |
| 6069 We already know that the extent changes start at or after | |
| 6070 the line because we checked before entering the loop. */ | |
| 428 | 6071 if (extent_beg_unchanged != -1 |
| 6072 && extent_end_unchanged != -1 | |
| 826 | 6073 && ((extent_beg_unchanged < ddl->charpos) |
| 6074 || (extent_end_unchanged > ddl->end_charpos))) | |
| 428 | 6075 return regenerate_window_extents_only_changed (w, startp, pointm, |
| 6076 extent_beg_unchanged, | |
| 6077 extent_end_unchanged); | |
| 6078 else | |
| 6079 return 1; | |
| 6080 } | |
| 6081 } | |
| 6082 | |
| 6083 /* Oh, well. */ | |
| 6084 return 0; | |
| 6085 } | |
| 6086 | |
| 6087 /* Given a window and a point, update the given display lines such | |
| 6088 that point is displayed in the middle of the window. | |
| 6089 Return the window's new start position. */ | |
| 6090 | |
| 665 | 6091 static Charbpos |
| 6092 regenerate_window_point_center (struct window *w, Charbpos point, int type) | |
| 428 | 6093 { |
| 665 | 6094 Charbpos startp; |
| 428 | 6095 |
| 6096 /* We need to make sure that the modeline is generated so that the | |
| 6097 window height can be calculated correctly. */ | |
| 6098 ensure_modeline_generated (w, type); | |
| 6099 | |
| 6100 startp = start_with_line_at_pixpos (w, point, window_half_pixpos (w)); | |
| 6101 regenerate_window (w, startp, point, type); | |
| 6102 Fset_marker (w->start[type], make_int (startp), w->buffer); | |
| 6103 | |
| 6104 return startp; | |
| 6105 } | |
| 6106 | |
| 6107 /* Given a window and a set of display lines, return a boolean | |
| 6108 indicating whether the given point is contained within. */ | |
| 6109 | |
| 6110 static int | |
| 665 | 6111 point_visible (struct window *w, Charbpos point, int type) |
| 428 | 6112 { |
| 6113 struct buffer *b = XBUFFER (w->buffer); | |
| 6114 display_line_dynarr *dla = window_display_lines (w, type); | |
| 6115 int first_line; | |
| 6116 | |
| 4967 | 6117 if (Dynarr_length (dla) && Dynarr_begin (dla)->modeline) |
| 428 | 6118 first_line = 1; |
| 6119 else | |
| 6120 first_line = 0; | |
| 6121 | |
| 6122 if (Dynarr_length (dla) > first_line) | |
| 6123 { | |
| 665 | 6124 Charbpos start, end; |
| 428 | 6125 struct display_line *dl = Dynarr_atp (dla, first_line); |
| 6126 | |
| 826 | 6127 start = dl->charpos; |
| 428 | 6128 end = BUF_Z (b) - w->window_end_pos[type] - 1; |
| 6129 | |
| 6130 if (point >= start && point <= end) | |
| 6131 { | |
| 6132 if (!MINI_WINDOW_P (w) && scroll_on_clipped_lines) | |
| 6133 { | |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
6134 dl = Dynarr_lastp (dla); |
| 428 | 6135 |
| 826 | 6136 if (point >= (dl->charpos + dl->offset) |
| 6137 && point <= (dl->end_charpos + dl->offset)) | |
| 428 | 6138 return !dl->clip; |
| 6139 else | |
| 6140 return 1; | |
| 6141 } | |
| 6142 else | |
| 6143 return 1; | |
| 6144 } | |
| 6145 else | |
| 6146 return 0; | |
| 6147 } | |
| 6148 else | |
| 6149 return 0; | |
| 6150 } | |
| 6151 | |
| 6152 /* Return pixel position the middle of the window, not including the | |
| 6153 modeline and any potential horizontal scrollbar. */ | |
| 6154 | |
| 6155 int | |
| 6156 window_half_pixpos (struct window *w) | |
| 6157 { | |
| 6158 return WINDOW_TEXT_TOP (w) + (WINDOW_TEXT_HEIGHT (w) >> 1); | |
| 6159 } | |
| 6160 | |
| 6161 /* Return the display line which is currently in the middle of the | |
| 6162 window W for display lines TYPE. */ | |
| 6163 | |
| 6164 int | |
| 665 | 6165 line_at_center (struct window *w, int type, Charbpos start, Charbpos point) |
| 428 | 6166 { |
| 6167 display_line_dynarr *dla; | |
| 6168 int half; | |
| 6169 int elt; | |
| 6170 int first_elt = (MINI_WINDOW_P (w) ? 0 : 1); | |
| 6171 | |
| 6172 if (type == CMOTION_DISP) | |
| 6173 regenerate_window (w, start, point, type); | |
| 6174 | |
| 6175 dla = window_display_lines (w, type); | |
| 6176 half = window_half_pixpos (w); | |
| 6177 | |
| 6178 for (elt = first_elt; elt < Dynarr_length (dla); elt++) | |
| 6179 { | |
| 6180 struct display_line *dl = Dynarr_atp (dla, elt); | |
| 6181 int line_bot = dl->ypos + dl->descent; | |
| 6182 | |
| 6183 if (line_bot > half) | |
| 6184 return elt; | |
| 6185 } | |
| 6186 | |
| 6187 /* We may not have a line at the middle if the end of the buffer is | |
| 6188 being displayed. */ | |
| 6189 return -1; | |
| 6190 } | |
| 6191 | |
| 6192 /* Return a value for point that would place it at the beginning of | |
| 6193 the line which is in the middle of the window. */ | |
| 6194 | |
| 665 | 6195 Charbpos |
| 6196 point_at_center (struct window *w, int type, Charbpos start, Charbpos point) | |
| 428 | 6197 { |
| 6198 /* line_at_center will regenerate the display structures, if necessary. */ | |
| 6199 int line = line_at_center (w, type, start, point); | |
| 6200 | |
| 6201 if (line == -1) | |
| 6202 return BUF_ZV (XBUFFER (w->buffer)); | |
| 6203 else | |
| 6204 { | |
| 6205 display_line_dynarr *dla = window_display_lines (w, type); | |
| 6206 struct display_line *dl = Dynarr_atp (dla, line); | |
| 6207 | |
| 826 | 6208 return dl->charpos; |
| 428 | 6209 } |
| 6210 } | |
| 6211 | |
| 6212 /* For a given window, ensure that the current visual representation | |
| 6213 is accurate. */ | |
| 6214 | |
| 6215 static void | |
| 6216 redisplay_window (Lisp_Object window, int skip_selected) | |
| 6217 { | |
| 6218 struct window *w = XWINDOW (window); | |
| 6219 struct frame *f = XFRAME (w->frame); | |
| 6220 struct device *d = XDEVICE (f->device); | |
| 6221 Lisp_Object old_buffer = w->buffer; | |
| 6222 Lisp_Object the_buffer = w->buffer; | |
| 6223 struct buffer *b; | |
| 6224 int echo_active = 0; | |
| 6225 int startp = 1; | |
| 6226 int pointm; | |
| 6227 int old_startp = 1; | |
| 6228 int old_pointm = 1; | |
| 6229 int selected_in_its_frame; | |
| 6230 int selected_globally; | |
| 6231 int skip_output = 0; | |
| 6232 int truncation_changed; | |
| 6233 int inactive_minibuffer = | |
| 6234 (MINI_WINDOW_P (w) && | |
| 6235 (f != device_selected_frame (d)) && | |
| 6236 !is_surrogate_for_selected_frame (f)); | |
| 6237 | |
| 6238 /* #### In the new world this function actually does a bunch of | |
| 6239 optimizations such as buffer-based scrolling, but none of that is | |
| 6240 implemented yet. */ | |
| 6241 | |
| 6242 /* If this is a combination window, do its children; that's all. | |
| 6243 The selected window is always a leaf so we don't check for | |
| 6244 skip_selected here. */ | |
| 6245 if (!NILP (w->vchild)) | |
| 6246 { | |
| 6247 redisplay_windows (w->vchild, skip_selected); | |
| 6248 return; | |
| 6249 } | |
| 6250 if (!NILP (w->hchild)) | |
| 6251 { | |
| 6252 redisplay_windows (w->hchild, skip_selected); | |
| 6253 return; | |
| 6254 } | |
| 6255 | |
| 6256 /* Is this window the selected window on its frame? */ | |
| 6257 selected_in_its_frame = (w == XWINDOW (FRAME_SELECTED_WINDOW (f))); | |
| 6258 selected_globally = | |
| 6259 selected_in_its_frame && | |
| 6260 EQ(DEVICE_CONSOLE(d), Vselected_console) && | |
| 6261 XDEVICE(CONSOLE_SELECTED_DEVICE(XCONSOLE(DEVICE_CONSOLE(d)))) == d && | |
| 6262 XFRAME(DEVICE_SELECTED_FRAME(d)) == f; | |
| 6263 if (skip_selected && selected_in_its_frame) | |
| 6264 return; | |
| 6265 | |
| 6266 /* It is possible that the window is not fully initialized yet. */ | |
| 6267 if (NILP (w->buffer)) | |
| 6268 return; | |
| 6269 | |
| 6270 if (MINI_WINDOW_P (w) && echo_area_active (f)) | |
| 6271 { | |
| 6272 w->buffer = the_buffer = Vecho_area_buffer; | |
| 6273 echo_active = 1; | |
| 6274 } | |
| 6275 | |
| 6276 b = XBUFFER (w->buffer); | |
| 6277 | |
| 6278 if (echo_active) | |
| 6279 { | |
| 6280 old_pointm = selected_globally | |
| 4187 | 6281 ? BUF_PT (b) |
| 6282 : marker_position (w->pointm[CURRENT_DISP]); | |
| 428 | 6283 pointm = 1; |
| 6284 } | |
| 6285 else | |
| 6286 { | |
| 6287 if (selected_globally) | |
| 6288 { | |
| 6289 pointm = BUF_PT (b); | |
| 6290 } | |
| 6291 else | |
| 6292 { | |
| 6293 pointm = marker_position (w->pointm[CURRENT_DISP]); | |
| 6294 | |
| 6295 if (pointm < BUF_BEGV (b)) | |
| 6296 pointm = BUF_BEGV (b); | |
| 6297 else if (pointm > BUF_ZV (b)) | |
| 6298 pointm = BUF_ZV (b); | |
| 6299 } | |
| 6300 } | |
| 6301 Fset_marker (w->pointm[DESIRED_DISP], make_int (pointm), the_buffer); | |
| 6302 | |
| 4968 | 6303 /* Added 2-1-10 -- we should never have empty face or glyph cachels |
| 6304 because we initialized them at startup and the only way to reduce | |
| 6305 their number is through calling reset_face_cachels() or | |
| 6306 reset_glyph_cachels(), which as a side effect sets up a number of | |
| 6307 standard entries */ | |
| 6308 assert (Dynarr_length (w->face_cachels)); | |
| 6309 assert (Dynarr_length (w->glyph_cachels)); | |
| 6310 | |
| 428 | 6311 /* If the buffer has changed we have to invalidate all of our face |
| 6312 cache elements. */ | |
| 6313 if ((!echo_active && b != window_display_buffer (w)) | |
| 4968 | 6314 #if 0 |
| 6315 /* #### Delete this code sometime later than 2-1-10 when we're sure it's | |
| 6316 not needed */ | |
| 428 | 6317 || !Dynarr_length (w->face_cachels) |
| 4968 | 6318 #endif |
| 428 | 6319 || f->faces_changed) |
| 6320 reset_face_cachels (w); | |
| 6321 else | |
| 6322 mark_face_cachels_as_not_updated (w); | |
| 6323 | |
| 6324 /* Ditto the glyph cache elements, although we do *not* invalidate | |
| 6325 the cache purely because glyphs have changed - this is now | |
| 6326 handled by the dirty flag.*/ | |
| 6327 if ((!echo_active && b != window_display_buffer (w)) | |
| 4968 | 6328 #if 0 |
| 6329 /* #### Delete this code sometime later than 2-1-10 when we're sure it's | |
| 6330 not needed */ | |
| 6331 || !Dynarr_length (w->glyph_cachels) | |
| 6332 #endif | |
| 6333 || f->faces_changed) | |
| 428 | 6334 reset_glyph_cachels (w); |
| 6335 else | |
| 6336 mark_glyph_cachels_as_not_updated (w); | |
| 6337 | |
| 6338 /* If the marker's buffer is not the window's buffer, then we need | |
| 6339 to find a new starting position. */ | |
| 6340 if (!MINI_WINDOW_P (w) | |
| 6341 && !EQ (Fmarker_buffer (w->start[CURRENT_DISP]), w->buffer)) | |
| 6342 { | |
| 6343 startp = regenerate_window_point_center (w, pointm, DESIRED_DISP); | |
| 6344 | |
| 6345 goto regeneration_done; | |
| 6346 } | |
| 6347 | |
| 6348 if (echo_active) | |
| 6349 { | |
| 6350 old_startp = marker_position (w->start[CURRENT_DISP]); | |
| 6351 startp = 1; | |
| 6352 } | |
| 6353 else | |
| 6354 { | |
| 6355 startp = marker_position (w->start[CURRENT_DISP]); | |
| 6356 if (startp < BUF_BEGV (b)) | |
| 6357 startp = BUF_BEGV (b); | |
| 6358 else if (startp > BUF_ZV (b)) | |
| 6359 startp = BUF_ZV (b); | |
| 6360 } | |
| 6361 Fset_marker (w->start[DESIRED_DISP], make_int (startp), the_buffer); | |
| 6362 | |
| 6363 truncation_changed = (find_window_mirror (w)->truncate_win != | |
| 647 | 6364 (unsigned int) window_truncation_on (w)); |
| 428 | 6365 |
| 6366 /* If w->force_start is set, then some function set w->start and we | |
| 6367 should display from there and change point, if necessary, to | |
| 6368 ensure that it is visible. */ | |
| 6369 if (w->force_start || inactive_minibuffer) | |
| 6370 { | |
| 6371 w->force_start = 0; | |
| 6372 w->last_modified[DESIRED_DISP] = Qzero; | |
| 6373 w->last_facechange[DESIRED_DISP] = Qzero; | |
| 6374 | |
| 6375 regenerate_window (w, startp, pointm, DESIRED_DISP); | |
| 6376 | |
| 6377 if (!point_visible (w, pointm, DESIRED_DISP) && !inactive_minibuffer) | |
| 6378 { | |
| 6379 pointm = point_at_center (w, DESIRED_DISP, 0, 0); | |
| 6380 | |
| 6381 if (selected_globally) | |
| 6382 BUF_SET_PT (b, pointm); | |
| 6383 | |
| 6384 Fset_marker (w->pointm[DESIRED_DISP], make_int (pointm), | |
| 6385 the_buffer); | |
| 6386 | |
| 6387 /* #### BUFU amounts of overkill just to get the cursor | |
| 4187 | 6388 location marked properly. FIX ME FIX ME FIX ME */ |
| 428 | 6389 regenerate_window (w, startp, pointm, DESIRED_DISP); |
| 6390 } | |
| 6391 | |
| 6392 goto regeneration_done; | |
| 6393 } | |
| 6394 | |
| 6395 /* If nothing has changed since the last redisplay, then we just | |
| 6396 need to make sure that point is still visible. */ | |
| 6397 if (XINT (w->last_modified[CURRENT_DISP]) >= BUF_MODIFF (b) | |
| 6398 && XINT (w->last_facechange[CURRENT_DISP]) >= BUF_FACECHANGE (b) | |
| 6399 && pointm >= startp | |
| 6400 /* This check is to make sure we restore the minibuffer after a | |
| 4187 | 6401 temporary change to the echo area. */ |
| 428 | 6402 && !(MINI_WINDOW_P (w) && f->buffers_changed) |
| 6403 && !f->frame_changed | |
| 6404 && !truncation_changed | |
| 442 | 6405 /* check whether start is really at the beginning of a line GE */ |
| 428 | 6406 && (!w->start_at_line_beg || beginning_of_line_p (b, startp)) |
| 6407 ) | |
| 6408 { | |
| 6409 /* Check if the cursor has actually moved. */ | |
| 6410 if (EQ (Fmarker_buffer (w->last_point[CURRENT_DISP]), w->buffer) | |
| 6411 && pointm == marker_position (w->last_point[CURRENT_DISP]) | |
| 6412 && selected_globally | |
| 6413 && !w->windows_changed | |
| 6414 && !f->clip_changed | |
| 6415 && !f->extents_changed | |
| 6416 && !f->faces_changed | |
| 6417 && !f->glyphs_changed | |
| 6418 && !f->subwindows_changed | |
| 442 | 6419 /* && !f->subwindows_state_changed*/ |
| 428 | 6420 && !f->point_changed |
| 6421 && !f->windows_structure_changed) | |
| 6422 { | |
| 6423 /* If not, we're done. */ | |
| 6424 if (f->modeline_changed) | |
| 6425 regenerate_modeline (w); | |
| 6426 | |
| 6427 skip_output = 1; | |
| 6428 goto regeneration_done; | |
| 6429 } | |
| 6430 else | |
| 6431 { | |
| 6432 /* If the new point is visible in the redisplay structures, | |
| 4187 | 6433 then let the output update routines handle it, otherwise |
| 6434 do things the hard way. */ | |
| 428 | 6435 if (!w->windows_changed |
| 6436 && !f->clip_changed | |
| 6437 && !f->extents_changed | |
| 6438 && !f->faces_changed | |
| 6439 && !f->glyphs_changed | |
| 6440 && !f->subwindows_changed | |
| 442 | 6441 /* && !f->subwindows_state_changed*/ |
| 428 | 6442 && !f->windows_structure_changed) |
| 6443 { | |
| 6444 if (point_visible (w, pointm, CURRENT_DISP) | |
| 6445 && w->last_point_x[CURRENT_DISP] != -1 | |
| 6446 && w->last_point_y[CURRENT_DISP] != -1) | |
| 6447 { | |
| 6448 if (redisplay_move_cursor (w, pointm, FRAME_TTY_P (f))) | |
| 6449 { | |
| 6450 /* Always regenerate in case it is displaying | |
| 4187 | 6451 the current line or column. */ |
| 428 | 6452 regenerate_modeline (w); |
| 6453 | |
| 6454 skip_output = 1; | |
| 6455 goto regeneration_done; | |
| 6456 } | |
| 6457 } | |
| 6458 else if (!selected_in_its_frame && !f->point_changed) | |
| 6459 { | |
| 6460 if (f->modeline_changed) | |
| 6461 regenerate_modeline (w); | |
| 6462 | |
| 6463 skip_output = 1; | |
| 6464 goto regeneration_done; | |
| 6465 } | |
| 6466 } | |
| 6467 | |
| 6468 /* If we weren't able to take the shortcut method, then use | |
| 4187 | 6469 the brute force method. */ |
| 428 | 6470 regenerate_window (w, startp, pointm, DESIRED_DISP); |
| 6471 | |
| 6472 if (point_visible (w, pointm, DESIRED_DISP)) | |
| 6473 goto regeneration_done; | |
| 6474 } | |
| 6475 } | |
| 6476 | |
| 6477 /* Check if the starting point is no longer at the beginning of a | |
| 6478 line, in which case find a new starting point. We also recenter | |
| 6479 if our start position is equal to point-max. Otherwise we'll end | |
| 6480 up with a blank window. */ | |
| 6481 else if (((w->start_at_line_beg || MINI_WINDOW_P (w)) | |
| 6482 && !(startp == BUF_BEGV (b) | |
| 6483 || BUF_FETCH_CHAR (b, startp - 1) == '\n')) | |
| 6484 || (pointm == startp && | |
| 6485 EQ (Fmarker_buffer (w->last_start[CURRENT_DISP]), w->buffer) && | |
| 6486 startp < marker_position (w->last_start[CURRENT_DISP])) | |
| 6487 || (startp == BUF_ZV (b))) | |
| 6488 { | |
| 6489 startp = regenerate_window_point_center (w, pointm, DESIRED_DISP); | |
| 6490 | |
| 6491 goto regeneration_done; | |
| 6492 } | |
| 6493 /* See if we can update the data structures locally based on | |
| 6494 knowledge of what changed in the buffer. */ | |
| 6495 else if (!w->windows_changed | |
| 6496 && !f->clip_changed | |
| 6497 && !f->faces_changed | |
| 6498 && !f->glyphs_changed | |
| 6499 && !f->subwindows_changed | |
| 442 | 6500 /* && !f->subwindows_state_changed*/ |
| 428 | 6501 && !f->windows_structure_changed |
| 6502 && !f->frame_changed | |
| 6503 && !truncation_changed | |
| 6504 && pointm >= startp | |
| 6505 && regenerate_window_incrementally (w, startp, pointm)) | |
| 6506 { | |
| 6507 if (f->modeline_changed | |
| 6508 || XINT (w->last_modified[CURRENT_DISP]) < BUF_MODIFF (b) | |
| 6509 || XINT (w->last_facechange[CURRENT_DISP]) < BUF_FACECHANGE (b)) | |
| 6510 regenerate_modeline (w); | |
| 6511 | |
| 6512 skip_output = 1; | |
| 6513 goto regeneration_done; | |
| 6514 } | |
| 6515 /* #### This is where a check for structure based scrolling would go. */ | |
| 6516 /* If all else fails, try just regenerating and see what happens. */ | |
| 6517 else | |
| 6518 { | |
| 6519 regenerate_window (w, startp, pointm, DESIRED_DISP); | |
| 6520 | |
| 6521 if (point_visible (w, pointm, DESIRED_DISP)) | |
| 6522 goto regeneration_done; | |
| 6523 } | |
| 6524 | |
| 6525 /* We still haven't gotten the window regenerated with point | |
| 6526 visible. Next we try scrolling a little and see if point comes | |
| 6527 back onto the screen. */ | |
| 6528 if (scroll_step > 0) | |
| 6529 { | |
| 6530 int scrolled = scroll_conservatively; | |
| 6531 for (; scrolled >= 0; scrolled -= scroll_step) | |
| 6532 { | |
| 6533 startp = vmotion (w, startp, | |
| 6534 (pointm < startp) ? -scroll_step : scroll_step, 0); | |
| 6535 regenerate_window (w, startp, pointm, DESIRED_DISP); | |
| 6536 | |
| 6537 if (point_visible (w, pointm, DESIRED_DISP)) | |
| 6538 goto regeneration_done; | |
| 6539 } | |
| 6540 } | |
| 6541 | |
| 6542 /* We still haven't managed to get the screen drawn with point on | |
| 6543 the screen, so just center it and be done with it. */ | |
| 6544 startp = regenerate_window_point_center (w, pointm, DESIRED_DISP); | |
| 6545 | |
| 6546 | |
| 6547 regeneration_done: | |
| 6548 | |
| 6549 /* If the window's frame is changed then reset the current display | |
| 6550 lines in order to force a full repaint. */ | |
| 6551 if (f->frame_changed) | |
| 6552 { | |
| 6553 display_line_dynarr *cla = window_display_lines (w, CURRENT_DISP); | |
| 6554 | |
| 6555 Dynarr_reset (cla); | |
| 6556 } | |
| 6557 | |
| 6558 /* Must do this before calling redisplay_output_window because it | |
| 6559 sets some markers on the window. */ | |
| 6560 if (echo_active) | |
| 6561 { | |
| 6562 w->buffer = old_buffer; | |
| 6563 Fset_marker (w->pointm[DESIRED_DISP], make_int (old_pointm), old_buffer); | |
| 6564 Fset_marker (w->start[DESIRED_DISP], make_int (old_startp), old_buffer); | |
| 6565 } | |
| 6566 | |
| 6567 /* These also have to be set before calling redisplay_output_window | |
| 6568 since it sets the CURRENT_DISP values based on them. */ | |
| 6569 w->last_modified[DESIRED_DISP] = make_int (BUF_MODIFF (b)); | |
| 6570 w->last_facechange[DESIRED_DISP] = make_int (BUF_FACECHANGE (b)); | |
| 6571 Fset_marker (w->last_start[DESIRED_DISP], make_int (startp), w->buffer); | |
| 6572 Fset_marker (w->last_point[DESIRED_DISP], make_int (pointm), w->buffer); | |
| 6573 | |
| 6574 if (!skip_output) | |
| 6575 { | |
| 665 | 6576 Charbpos start = marker_position (w->start[DESIRED_DISP]); |
| 6577 Charbpos end = (w->window_end_pos[DESIRED_DISP] == -1 | |
| 428 | 6578 ? BUF_ZV (b) |
| 6579 : BUF_Z (b) - w->window_end_pos[DESIRED_DISP] - 1); | |
| 6580 /* Don't pollute the cache if not sure if we are correct */ | |
| 6581 if (w->start_at_line_beg) | |
| 6582 update_line_start_cache (w, start, end, pointm, 1); | |
| 6583 redisplay_output_window (w); | |
| 6584 /* | |
| 6585 * If we just displayed the echo area, the line start cache is | |
| 6586 * no longer valid, because the minibuffer window is associated | |
| 6587 * with the window now. | |
| 6588 */ | |
| 6589 if (echo_active) | |
| 6590 w->line_cache_last_updated = make_int (-1); | |
| 6591 } | |
| 6592 | |
| 6593 /* #### This should be dependent on face changes and will need to be | |
| 6594 somewhere else once tty updates occur on a per-frame basis. */ | |
| 6595 mark_face_cachels_as_clean (w); | |
| 6596 | |
| 438 | 6597 /* The glyph cachels only get dirty if someone changed something. |
| 6598 Since redisplay has now effectively ended we can reset the dirty | |
| 6599 flag since everything must be up-to-date. */ | |
| 428 | 6600 if (glyphs_changed) |
| 6601 mark_glyph_cachels_as_clean (w); | |
| 6602 | |
| 6603 w->windows_changed = 0; | |
| 6604 } | |
| 6605 | |
| 6606 /* Call buffer_reset_changes for all buffers present in any window | |
| 6607 currently visible in all frames on all devices. #### There has to | |
| 6608 be a better way to do this. */ | |
| 6609 | |
| 6610 static int | |
| 2286 | 6611 reset_buffer_changes_mapfun (struct window *w, void *UNUSED (closure)) |
| 428 | 6612 { |
| 6613 buffer_reset_changes (XBUFFER (w->buffer)); | |
| 6614 return 0; | |
| 6615 } | |
| 6616 | |
| 6617 static void | |
| 6618 reset_buffer_changes (void) | |
| 6619 { | |
| 6620 Lisp_Object frmcons, devcons, concons; | |
| 6621 | |
| 6622 FRAME_LOOP_NO_BREAK (frmcons, devcons, concons) | |
| 6623 { | |
| 6624 struct frame *f = XFRAME (XCAR (frmcons)); | |
| 6625 | |
| 6626 if (FRAME_REPAINT_P (f)) | |
| 6627 map_windows (f, reset_buffer_changes_mapfun, 0); | |
| 6628 } | |
| 6629 } | |
| 6630 | |
| 6631 /* Ensure that all windows underneath the given window in the window | |
| 6632 hierarchy are correctly displayed. */ | |
| 6633 | |
| 6634 static void | |
| 6635 redisplay_windows (Lisp_Object window, int skip_selected) | |
| 6636 { | |
| 6637 for (; !NILP (window) ; window = XWINDOW (window)->next) | |
| 6638 { | |
| 6639 redisplay_window (window, skip_selected); | |
| 6640 } | |
| 6641 } | |
| 6642 | |
| 1318 | 6643 /* Register an action to be called at the end of redisplay. |
| 6644 in_display is 0 when this is called. | |
| 6645 This is used when it is discovered that an action needs to be taken, | |
| 6646 but it's during redisplay, so it's not safe. (Typically, it's an action | |
| 6647 that needs to enter redisplay, which can't happen reentrantly.) | |
| 6648 | |
| 6649 NEVER signal an error in these functions. | |
| 6650 */ | |
| 6651 | |
| 6652 void | |
| 6653 register_post_redisplay_action (void (*fun) (Lisp_Object), Lisp_Object arg) | |
| 6654 { | |
| 6655 Vpost_redisplay_actions = nconc2 (Vpost_redisplay_actions, | |
| 6656 list1 (Fcons (make_opaque_ptr | |
| 6657 ((void *) fun), arg))); | |
| 6658 } | |
| 6659 | |
| 1320 | 6660 static int running_post_redisplay_actions; |
| 6661 | |
| 1318 | 6662 static void |
| 6663 run_post_redisplay_actions (void) | |
| 6664 { | |
| 1320 | 6665 int depth; |
| 6666 | |
| 6667 if (running_post_redisplay_actions) | |
| 6668 return; | |
| 6669 | |
| 6670 depth = internal_bind_int (&running_post_redisplay_actions, 1); | |
| 6671 /* If the function pushes further actions, they will be tacked onto | |
| 6672 the end of the list, and we'll run them when we're done with the | |
| 6673 current ones. */ | |
| 1318 | 6674 while (!NILP (Vpost_redisplay_actions)) |
| 6675 { | |
| 6676 Lisp_Object car = XCAR (Vpost_redisplay_actions); | |
| 6677 void (*fun) (Lisp_Object) = | |
| 6678 (void (*)(Lisp_Object)) get_opaque_ptr (XCAR (car)); | |
| 6679 (*fun) (XCDR (car)); | |
| 6680 free_opaque_ptr (XCAR (car)); | |
| 6681 free_cons (car); | |
| 6682 Vpost_redisplay_actions = XCDR (Vpost_redisplay_actions); | |
| 6683 } | |
| 1320 | 6684 unbind_to (depth); |
| 1318 | 6685 } |
| 6686 | |
| 6687 #ifdef ERROR_CHECK_TRAPPING_PROBLEMS | |
| 6688 | |
| 6689 static Lisp_Object | |
| 2286 | 6690 commit_ritual_suicide (Lisp_Object UNUSED (ceci_nest_pas_une_pipe)) |
| 1318 | 6691 { |
| 6692 assert (!in_display); | |
| 6693 return Qnil; | |
| 6694 } | |
| 6695 | |
| 6696 #endif | |
| 6697 | |
| 6698 /* Within the guts of redisplay, we are defenseless and cannot allow any of | |
| 6699 the following to happen: | |
| 6700 | |
| 6701 1) garbage collection | |
| 6702 2) QUIT | |
| 6703 3) any non-local exits | |
| 6704 4) frame size changes | |
| 6705 5) deletion of any buffers, windows, frames, etc. | |
| 6706 6) modification of buffer text | |
| 6707 7) reentrant entry of redisplay (see the stack trace above | |
| 6708 generate_displayable_area()) | |
| 6709 | |
| 6710 The general reason is that the redisplay code is written to assume that | |
| 6711 it is the only code running, and thus (a) cannot tolerate structures | |
| 6712 changed out from under it (hence 1, 4, 5, 6, 7) and (b) at various points | |
| 6713 within redisplay the redisplay structures may be in an inconsistent | |
| 6714 state and there are no unwind-protects to clean the structures up in | |
| 6715 case of non-local exit (hence 2, 3). Fixing redisplay to address these | |
| 6716 issues is hard and perhaps not worth it (and might slow things down a | |
| 6717 fair amount). We address 1, 4, 5 and 6 ourselves inside of | |
| 6718 enter_redisplay_critical_section() by simply inhibiting them, but we | |
| 6719 cannot handle 2 and 3, which must be handled at the actual point where | |
| 6720 they may occur (especially, internal_equal() or any place that may call | |
| 6721 Lisp), by wrapping the code in call_trapping_problems() or | |
| 6722 call_with_suspended_errors(). [[ NOTE: We could address QUIT by inhibiting | |
| 6723 it but this would be anti-social because it would prevent the user from | |
| 6724 interrupting any Lisp code called within the critical section. With the | |
| 6725 call_*() wrapping, C-g will interrupt the Lisp code and throw back to | |
| 6726 the innermost wrapping. ]] In fact we do turn off QUIT handling, since | |
| 6727 it's just too dangerous otherwise. See below. | |
| 6728 | |
| 6729 Code calling enter_redisplay_critical_section() must check for reentrancy | |
| 6730 (#7) and take appropriate corrective action. | |
| 6731 | |
| 6732 To help debug potential problems, we arrange (when | |
| 6733 ERROR_CHECK_TRAPPING_PROBLEMS is set) to crash automatically every time | |
| 6734 we execute QUIT or call Lisp code unless proper wrapping is in place, as | |
| 6735 well as further checks when we actually Fsignal(), Fthrow(), | |
| 6736 garbage_collect_1(). | |
| 6737 | |
| 6738 #### If a frame-size change does occur we should probably actually be | |
| 6739 preempting redisplay. */ | |
| 6740 | |
| 6741 /* Count of number of recursive times we call | |
| 6742 enter_redisplay_critical_section() or | |
| 6743 enter_redisplay_critical_section_maybe(). | |
| 6744 enter_redisplay_critical_section() cannot occur reentrantly but we have | |
| 6745 to know in the *maybe() version whether to exit the section when we're | |
| 6746 done. */ | |
| 6747 static int in_display_nesting; | |
| 6748 | |
| 6749 static Lisp_Object | |
| 2286 | 6750 end_hold_frame_size_changes (Lisp_Object UNUSED (obj)) |
| 1318 | 6751 { |
| 6752 if (!hold_frame_size_changes) | |
| 6753 { | |
| 6754 /* we used to have a function to do this for only one frame, and | |
| 6755 it was typical to call it at the end of a critical section | |
| 6756 (which occurs once per frame); but what then happens if multiple | |
| 6757 frames have frame changes held up? | |
| 4187 | 6758 |
| 1318 | 6759 This means we are O(N^2) over frames. I seriously doubt it matters. |
| 6760 --ben */ | |
| 6761 Lisp_Object frmcons, devcons, concons; | |
| 4187 | 6762 |
| 1318 | 6763 FRAME_LOOP_NO_BREAK (frmcons, devcons, concons) |
| 6764 { | |
| 6765 struct frame *f = XFRAME (XCAR (frmcons)); | |
| 6766 if (f->size_change_pending) | |
| 5043 | 6767 change_frame_size (f, f->new_width, f->new_height, 0); |
| 1318 | 6768 } |
| 6769 } | |
| 6770 return Qnil; | |
| 6771 } | |
| 6772 | |
| 6773 /* Call this to temporarily prevent frame-size changes from being processed. | |
| 6774 To undo, use unbind_to(), passing it the value returned by this function. | |
| 6775 */ | |
| 6776 | |
| 6777 int | |
| 6778 begin_hold_frame_size_changes (void) | |
| 6779 { | |
| 6780 int depth = specpdl_depth (); | |
| 6781 record_unwind_protect (end_hold_frame_size_changes, Qnil); | |
| 6782 internal_bind_int (&hold_frame_size_changes, 1 + hold_frame_size_changes); | |
| 6783 return depth; | |
| 6784 } | |
| 6785 | |
| 6786 int | |
| 6787 enter_redisplay_critical_section (void) | |
| 6788 { | |
| 6789 int depth = specpdl_depth (); | |
| 6790 | |
| 6791 /* Reentrant entry is deadly. The calling function must check for this. */ | |
| 6792 assert (!in_display); | |
| 6793 begin_hold_frame_size_changes (); | |
| 6794 /* Make sure in_display gets reset, but don't set it yet so that | |
| 6795 commit_ritual_suicide() can be used. */ | |
| 6796 internal_bind_int (&in_display, 0); | |
| 6797 internal_bind_int (&in_display_nesting, 1 + in_display_nesting); | |
| 6798 #ifdef ERROR_CHECK_TRAPPING_PROBLEMS | |
| 6799 /* Force every call to QUIT to check for in_displayness. This will | |
| 6800 verify proper wrapping, as in the previous comment, aborting if not. */ | |
| 6801 something_happened++; | |
| 6802 /* Verify that no nonlocal exits blow past us. */ | |
| 6803 record_unwind_protect (commit_ritual_suicide, Qnil); | |
| 6804 #endif | |
| 6805 in_display++; | |
| 6806 | |
| 6807 set_trapping_problems_flags (INHIBIT_ANY_CHANGE_AFFECTING_REDISPLAY); | |
| 6808 /* Even checking for QUIT can cause arbitrary Lisp code to be executed, | |
| 6809 e.g. through a menu handler. We really don't want that happening | |
| 6810 inside of redisplay. Code that we `eval' is at least written with the | |
| 6811 expectation that it's inside of redisplay, and shouldn't try anything | |
| 6812 weird; but that's not the case for menu code (e.g. custom loads huge | |
| 6813 amounts of LISP FILES from a menu handler! FMH!). Safest just to turn | |
| 6814 this off. We could turn it on using UNINHIBIT_QUIT or | |
| 6815 begin_do_check_for_quit() in certain places if we want, if we know | |
| 6816 it's not in an especially tricky place. */ | |
| 6817 begin_dont_check_for_quit (); | |
| 6818 return depth; | |
| 6819 } | |
| 6820 | |
| 6821 void | |
| 6822 exit_redisplay_critical_section (int depth) | |
| 6823 { | |
| 6824 in_display--; | |
| 6825 assert (!in_display); | |
| 6826 unbind_to (depth); | |
| 6827 | |
| 6828 run_post_redisplay_actions (); | |
| 6829 } | |
| 6830 | |
| 6831 /* Enter the redisplay critical section if we're not already in it. This | |
| 6832 is for code that needs frame changes held up and other protections from | |
| 6833 being inside, but doesn't modify the redisplay structures, and doesn't | |
| 6834 look at them in a way that they will be confused by inconsistencies. */ | |
| 6835 | |
| 6836 int | |
| 6837 enter_redisplay_critical_section_maybe (void) | |
| 6838 { | |
| 6839 if (!in_display) | |
| 6840 return enter_redisplay_critical_section (); | |
| 6841 else | |
| 6842 return internal_bind_int (&in_display_nesting, 1 + in_display_nesting); | |
| 6843 } | |
| 6844 | |
| 6845 void | |
| 6846 exit_redisplay_critical_section_maybe (int depth) | |
| 6847 { | |
| 6848 if (in_display_nesting == 1) | |
| 6849 exit_redisplay_critical_section (depth); | |
| 6850 else | |
| 6851 unbind_to (depth); | |
| 6852 } | |
| 6853 | |
| 1279 | 6854 /* Ensure that all windows on the given frame are correctly displayed. |
| 6855 Return non-zero if pre-empted. */ | |
| 428 | 6856 |
| 442 | 6857 int |
| 428 | 6858 redisplay_frame (struct frame *f, int preemption_check) |
| 6859 { | |
| 6860 struct device *d = XDEVICE (f->device); | |
| 853 | 6861 int depth; |
| 428 | 6862 |
| 1279 | 6863 assert (f->init_finished); |
| 6864 | |
| 1318 | 6865 /* NOTE: Without sufficient checks for stream frames, we got weird |
| 6866 crashes in pdump. These came and went very easily -- adding the | |
| 6867 critical-section code for redisplay was enough to trigger them. | |
| 6868 Perhaps I should have debugged them but there didn't seem to be any | |
| 6869 point. --ben */ | |
| 1279 | 6870 if (FRAME_STREAM_P (f)) /* nothing to do */ |
| 6871 return 0; | |
| 6872 | |
| 1318 | 6873 /* Reentrancy into redisplay can be deadly. See stack trace above |
| 6874 generate_displayable_area(). */ | |
| 6875 if (in_display) | |
| 6876 return 1; | |
| 6877 | |
| 545 | 6878 if (preemption_check |
| 6879 && !DEVICE_IMPL_FLAG (d, XDEVIMPF_DONT_PREEMPT_REDISPLAY)) | |
| 428 | 6880 { |
| 6881 /* The preemption check itself takes a lot of time, | |
| 6882 so normally don't do it here. We do it if called | |
| 6883 from Lisp, though (`redisplay-frame'). */ | |
| 6884 int preempted; | |
| 6885 | |
| 6886 REDISPLAY_PREEMPTION_CHECK; | |
| 6887 if (preempted) | |
| 6888 return 1; | |
| 6889 } | |
| 6890 | |
| 442 | 6891 if (!internal_equal (f->old_buffer_alist, f->buffer_alist, 0)) |
| 6892 { | |
| 6893 Lisp_Object frame; | |
| 6894 | |
| 6895 f->old_buffer_alist = Freplace_list (f->old_buffer_alist, | |
| 6896 f->buffer_alist); | |
| 793 | 6897 frame = wrap_frame (f); |
| 442 | 6898 va_run_hook_with_args (Qbuffer_list_changed_hook, 1, frame); |
| 6899 } | |
| 6900 | |
| 428 | 6901 /* Before we put a hold on frame size changes, attempt to process |
| 6902 any which are already pending. */ | |
| 6903 if (f->size_change_pending) | |
| 5043 | 6904 change_frame_size (f, f->new_width, f->new_height, 0); |
| 428 | 6905 |
| 6906 /* If frame size might need to be changed, due to changed size | |
| 6907 of toolbars, scrollbars etc, change it now */ | |
| 6908 if (f->size_slipped) | |
| 6909 { | |
| 6910 adjust_frame_size (f); | |
| 6911 assert (!f->size_slipped); | |
| 6912 } | |
| 6913 | |
| 1318 | 6914 /* The menubar, toolbar, and icon updates should be done before |
| 853 | 6915 enter_redisplay_critical_section is called and we are officially |
| 3025 | 6916 `in_display'. They is because they tend to eval Lisp code, which |
| 1318 | 6917 needs to be carefully wrapped within the critical section (and hence |
| 6918 is difficult to debug). */ | |
| 428 | 6919 |
| 6920 #ifdef HAVE_MENUBARS | |
| 6921 /* Update the menubar. It is done first since it could change | |
| 6922 the menubar's visibility. This way we avoid having flashing | |
| 6923 caused by an Expose event generated by the visibility change | |
| 6924 being handled. */ | |
| 6925 update_frame_menubars (f); | |
| 6926 #endif /* HAVE_MENUBARS */ | |
| 6927 #ifdef HAVE_TOOLBARS | |
| 905 | 6928 /* Update the toolbars geometry. We don't update the toolbars |
| 6929 themselves at this point since the space they are trying to | |
| 6930 occupy may currently by occupied by gutter elements. Instead we | |
| 6931 update the geometry, then update the gutter geometry, then update | |
| 6932 the gutters - which will cause mapped windows to be repositioned | |
| 6933 - and finally update the toolbars. */ | |
| 6934 update_frame_toolbars_geometry (f); | |
| 428 | 6935 #endif /* HAVE_TOOLBARS */ |
| 442 | 6936 /* Gutter update proper has to be done inside display when no frame |
| 6937 size changes can occur, thus we separately update the gutter | |
| 6938 geometry here if it needs it. */ | |
| 6939 update_frame_gutter_geometry (f); | |
| 428 | 6940 |
| 6941 /* If we clear the frame we have to force its contents to be redrawn. */ | |
| 6942 if (f->clear) | |
| 6943 f->frame_changed = 1; | |
| 6944 | |
| 442 | 6945 /* Invalidate the subwindow caches. We use subwindows_changed here |
| 6946 to cause subwindows to get instantiated. This is because | |
| 428 | 6947 subwindows_state_changed is less strict - dealing with things |
| 6948 like the clicked state of button. We have to do this before | |
| 6949 redisplaying the gutters as subwindows get unmapped in the | |
| 6950 process.*/ | |
| 442 | 6951 if (f->frame_changed) |
| 6952 reset_frame_subwindow_instance_cache (f); | |
| 6953 | |
| 6954 if (f->frame_changed || f->subwindows_changed) | |
| 6955 { | |
| 428 | 6956 /* we have to do this so the gutter gets regenerated. */ |
| 6957 reset_gutter_display_lines (f); | |
| 6958 } | |
| 6959 | |
| 853 | 6960 depth = enter_redisplay_critical_section (); |
| 428 | 6961 |
| 6962 /* ----------------- BEGIN CRITICAL REDISPLAY SECTION ---------------- */ | |
| 1318 | 6963 |
| 6964 /* See comments in enter_redisplay_critical_section() */ | |
| 428 | 6965 |
| 442 | 6966 MAYBE_DEVMETH (d, frame_output_begin, (f)); |
| 6967 | |
| 6968 /* We can now update the gutters, safe in the knowledge that our | |
| 6969 efforts won't get undone. */ | |
| 6970 | |
| 6971 /* This can call lisp, but redisplay is protected by binding | |
| 6972 inhibit_quit. More importantly the code involving display lines | |
| 6973 *assumes* that GC will not happen and so does not GCPRO | |
| 6974 anything. Since we use this code the whole time with the gutters | |
| 1318 | 6975 we cannot allow GC to happen when manipulating the gutters. |
| 6976 | |
| 6977 This must be inside of the critical section for various reasons. | |
| 6978 For example, it messes with display structures, which be left in | |
| 6979 an inconsistent state. */ | |
| 442 | 6980 update_frame_gutters (f); |
| 6981 | |
| 428 | 6982 /* Erase the frame before outputting its contents. */ |
| 6983 if (f->clear) | |
| 6984 { | |
| 442 | 6985 MAYBE_DEVMETH (d, clear_frame, (f)); |
| 428 | 6986 } |
| 6987 | |
| 6988 /* Do the selected window first. */ | |
| 6989 redisplay_window (FRAME_SELECTED_WINDOW (f), 0); | |
| 6990 | |
| 6991 /* Then do the rest. */ | |
| 6992 redisplay_windows (f->root_window, 1); | |
| 6993 | |
| 442 | 6994 MAYBE_DEVMETH (d, frame_output_end, (f)); |
| 428 | 6995 |
| 6996 update_frame_title (f); | |
| 6997 | |
| 905 | 6998 #ifdef HAVE_TOOLBARS |
| 6999 /* Finally update the toolbars. It seems its possible to get in a | |
| 7000 cycle between updating the gutter and the toolbars. Basically we | |
| 7001 want to end up with both being up-to-date and this doesn't seem | |
| 7002 possible in a single pass. */ | |
| 7003 update_frame_toolbars (f); | |
| 7004 #endif /* HAVE_TOOLBARS */ | |
| 7005 | |
| 428 | 7006 CLASS_RESET_CHANGED_FLAGS (f); |
| 7007 f->window_face_cache_reset = 0; | |
| 7008 f->echo_area_garbaged = 0; | |
| 7009 f->clear = 0; | |
| 7010 | |
| 7011 if (!f->size_change_pending) | |
| 7012 f->size_changed = 0; | |
| 7013 | |
| 7014 /* ----------------- END CRITICAL REDISPLAY SECTION ---------------- */ | |
| 7015 | |
| 853 | 7016 /* Allow frame size changes to occur again. */ |
| 7017 exit_redisplay_critical_section (depth); | |
| 428 | 7018 |
| 7019 return 0; | |
| 7020 } | |
| 7021 | |
| 440 | 7022 /* Ensure that all frames on the given device are correctly displayed. |
| 7023 If AUTOMATIC is non-zero, and the device implementation indicates | |
| 7024 no automatic redisplay, as printers do, then the device is not | |
| 7025 redisplayed. AUTOMATIC is set to zero when called from lisp | |
| 7026 functions (redraw-device) and (redisplay-device), and to non-zero | |
| 7027 when called from "lazy" redisplay(); | |
| 7028 */ | |
| 428 | 7029 |
| 7030 static int | |
| 440 | 7031 redisplay_device (struct device *d, int automatic) |
| 428 | 7032 { |
| 7033 Lisp_Object frame, frmcons; | |
| 7034 int size_change_failed = 0; | |
| 7035 struct frame *f; | |
| 7036 | |
| 545 | 7037 if (automatic && DEVICE_IMPL_FLAG (d, XDEVIMPF_NO_AUTO_REDISPLAY)) |
| 440 | 7038 return 0; |
| 7039 | |
| 428 | 7040 if (DEVICE_STREAM_P (d)) /* nothing to do */ |
| 7041 return 0; | |
| 7042 | |
| 7043 /* It is possible that redisplay has been called before the | |
| 545 | 7044 device is fully initialized, or that the console implementation |
| 7045 allows frameless devices. If so then continue with the next | |
| 7046 device. */ | |
| 428 | 7047 if (NILP (DEVICE_SELECTED_FRAME (d))) |
| 7048 return 0; | |
| 7049 | |
| 545 | 7050 if (!DEVICE_IMPL_FLAG (d, XDEVIMPF_DONT_PREEMPT_REDISPLAY)) |
| 7051 { | |
| 7052 int preempted; | |
| 7053 REDISPLAY_PREEMPTION_CHECK; | |
| 7054 if (preempted) | |
| 7055 return 1; | |
| 7056 } | |
| 428 | 7057 |
| 7058 /* Always do the selected frame first. */ | |
| 7059 frame = DEVICE_SELECTED_FRAME (d); | |
| 7060 | |
| 7061 f = XFRAME (frame); | |
| 7062 | |
| 7063 if (f->icon_changed || f->windows_changed) | |
| 7064 update_frame_icon (f); | |
| 7065 | |
| 7066 if (FRAME_REPAINT_P (f)) | |
| 7067 { | |
| 7068 if (CLASS_REDISPLAY_FLAGS_CHANGEDP(f)) | |
| 7069 { | |
| 588 | 7070 int preempted = redisplay_frame (f, 1); |
| 545 | 7071 if (preempted) |
| 7072 return 1; | |
| 7073 } | |
| 428 | 7074 |
| 7075 /* If the frame redisplay did not get preempted, then this flag | |
| 4187 | 7076 should have gotten set to 0. It might be possible for that |
| 7077 not to happen if a size change event were to occur at an odd | |
| 7078 time. To make sure we don't miss anything we simply don't | |
| 7079 reset the top level flags until the condition ends up being | |
| 7080 in the right state. */ | |
| 428 | 7081 if (f->size_changed) |
| 7082 size_change_failed = 1; | |
| 7083 } | |
| 7084 | |
| 7085 DEVICE_FRAME_LOOP (frmcons, d) | |
| 7086 { | |
| 7087 f = XFRAME (XCAR (frmcons)); | |
| 7088 | |
| 7089 if (f == XFRAME (DEVICE_SELECTED_FRAME (d))) | |
| 7090 continue; | |
| 7091 | |
| 7092 if (f->icon_changed || f->windows_changed) | |
| 7093 update_frame_icon (f); | |
| 7094 | |
| 7095 if (FRAME_REPAINT_P (f)) | |
| 7096 { | |
| 430 | 7097 if (CLASS_REDISPLAY_FLAGS_CHANGEDP (f)) |
| 428 | 7098 { |
| 588 | 7099 int preempted = redisplay_frame (f, 1); |
| 545 | 7100 if (preempted) |
| 7101 return 1; | |
| 428 | 7102 } |
| 7103 | |
| 7104 if (f->size_change_pending) | |
| 7105 size_change_failed = 1; | |
| 7106 } | |
| 7107 } | |
| 7108 | |
| 7109 /* If we get here then we redisplayed all of our frames without | |
| 7110 getting preempted so mark ourselves as clean. */ | |
| 7111 CLASS_RESET_CHANGED_FLAGS (d); | |
| 7112 | |
| 7113 if (!size_change_failed) | |
| 7114 d->size_changed = 0; | |
| 7115 | |
| 7116 return 0; | |
| 7117 } | |
| 7118 | |
| 7119 /* Ensure that all windows on all frames on all devices are displaying | |
| 7120 the current contents of their respective buffers. */ | |
| 7121 | |
| 7122 static void | |
| 7123 redisplay_without_hooks (void) | |
| 7124 { | |
| 7125 Lisp_Object devcons, concons; | |
| 7126 int size_change_failed = 0; | |
| 1292 | 7127 PROFILE_DECLARE (); |
| 7128 | |
| 7129 PROFILE_RECORD_ENTERING_SECTION (QSin_redisplay); | |
| 428 | 7130 |
| 7131 if (asynch_device_change_pending) | |
| 7132 handle_asynch_device_change (); | |
| 7133 | |
| 7134 if (!GLOBAL_REDISPLAY_FLAGS_CHANGEDP && | |
| 430 | 7135 !disable_preemption && preemption_count < max_preempts) |
| 428 | 7136 goto done; |
| 7137 | |
| 7138 DEVICE_LOOP_NO_BREAK (devcons, concons) | |
| 7139 { | |
| 7140 struct device *d = XDEVICE (XCAR (devcons)); | |
| 7141 int preempted; | |
| 7142 | |
| 430 | 7143 if (CLASS_REDISPLAY_FLAGS_CHANGEDP (d)) |
| 428 | 7144 { |
| 440 | 7145 preempted = redisplay_device (d, 1); |
| 428 | 7146 |
| 7147 if (preempted) | |
| 7148 { | |
| 7149 preemption_count++; | |
| 7150 RESET_CHANGED_SET_FLAGS; | |
| 7151 goto done; | |
| 7152 } | |
| 7153 | |
| 7154 /* See comment in redisplay_device. */ | |
| 7155 if (d->size_changed) | |
| 7156 size_change_failed = 1; | |
| 7157 } | |
| 7158 } | |
| 7159 preemption_count = 0; | |
| 7160 | |
| 7161 /* Mark redisplay as accurate */ | |
| 7162 GLOBAL_RESET_CHANGED_FLAGS; | |
| 7163 RESET_CHANGED_SET_FLAGS; | |
| 7164 | |
| 7165 if (faces_changed) | |
| 7166 { | |
| 7167 mark_all_faces_as_clean (); | |
| 7168 faces_changed = 0; | |
| 7169 } | |
| 7170 | |
| 7171 if (!size_change_failed) | |
| 7172 size_changed = 0; | |
| 7173 | |
| 7174 reset_buffer_changes (); | |
| 7175 | |
| 7176 done: | |
| 800 | 7177 #ifdef ERROR_CHECK_DISPLAY |
| 7178 sledgehammer_check_redisplay_structs (); | |
| 7179 #endif /* ERROR_CHECK_DISPLAY */ | |
| 1292 | 7180 |
| 7181 PROFILE_RECORD_EXITING_SECTION (QSin_redisplay); | |
| 428 | 7182 } |
| 7183 | |
| 1318 | 7184 /* Note: All places in the C code that call redisplay() are prepared to |
| 7185 handle GCing, which can happen from run_pre_idle_hook(). However, we | |
| 7186 can't currently handle GC inside the guts of redisplay; see | |
| 7187 enter_redisplay_critical_section(). | |
| 853 | 7188 |
| 7189 (#### What about other external entry points to the redisplay code? | |
| 7190 Someone should go through and make sure that all callers can handle | |
| 7191 GC there, too.) | |
| 7192 */ | |
| 7193 | |
| 428 | 7194 void |
| 7195 redisplay (void) | |
| 7196 { | |
| 853 | 7197 run_pre_idle_hook (); |
| 7198 redisplay_no_pre_idle_hook (); | |
| 7199 } | |
| 7200 | |
| 7201 void | |
| 7202 redisplay_no_pre_idle_hook (void) | |
| 7203 { | |
| 428 | 7204 if (last_display_warning_tick != display_warning_tick && |
| 7205 !inhibit_warning_display) | |
| 7206 { | |
| 7207 /* If an error occurs during this function, oh well. | |
| 4187 | 7208 If we report another warning, we could get stuck in an |
| 428 | 7209 infinite loop reporting warnings. */ |
| 853 | 7210 call0_trapping_problems |
| 7211 (0, Qdisplay_warning_buffer, | |
| 7212 INHIBIT_EXISTING_PERMANENT_DISPLAY_OBJECT_DELETION); | |
| 428 | 7213 last_display_warning_tick = display_warning_tick; |
| 7214 } | |
| 7215 | |
| 7216 redisplay_without_hooks (); | |
| 7217 } | |
| 7218 | |
| 853 | 7219 Lisp_Object |
| 7220 eval_within_redisplay (Lisp_Object dont_trust_this_damn_sucker) | |
| 7221 { | |
| 7222 return | |
| 7223 eval_in_buffer_trapping_problems | |
| 7224 ("Error calling function within redisplay", current_buffer, | |
| 1318 | 7225 dont_trust_this_damn_sucker, 0); |
| 853 | 7226 } |
| 428 | 7227 |
| 7228 /* Efficiently determine the window line number, and return a pointer | |
| 7229 to its printed representation. Do this regardless of whether | |
| 7230 line-number-mode is on. The first line in the buffer is counted as | |
| 7231 1. If narrowing is in effect, the lines are counted from the | |
| 7232 beginning of the visible portion of the buffer. */ | |
| 4970 | 7233 static Ascbyte * |
| 428 | 7234 window_line_number (struct window *w, int type) |
| 7235 { | |
| 7236 struct device *d = XDEVICE (XFRAME (w->frame)->device); | |
| 7237 struct buffer *b = XBUFFER (w->buffer); | |
| 7238 /* Be careful in the order of these tests. The first clause will | |
| 7239 fail if DEVICE_SELECTED_FRAME == Qnil (since w->frame cannot be). | |
| 7240 This can occur when the frame title is computed really early */ | |
| 665 | 7241 Charbpos pos = |
| 428 | 7242 ((EQ(DEVICE_SELECTED_FRAME(d), w->frame) && |
| 7243 (w == XWINDOW (FRAME_SELECTED_WINDOW (device_selected_frame(d)))) && | |
| 7244 EQ(DEVICE_CONSOLE(d), Vselected_console) && | |
| 7245 XDEVICE(CONSOLE_SELECTED_DEVICE(XCONSOLE(DEVICE_CONSOLE(d)))) == d ) | |
| 7246 ? BUF_PT (b) | |
| 7247 : marker_position (w->pointm[type])); | |
| 7248 EMACS_INT line; | |
| 7249 | |
| 7250 line = buffer_line_number (b, pos, 1); | |
| 7251 | |
| 603 | 7252 { |
| 4970 | 7253 static Ascbyte window_line_number_buf[DECIMAL_PRINT_SIZE (long)]; |
| 603 | 7254 |
| 7255 long_to_string (window_line_number_buf, line + 1); | |
| 7256 | |
| 7257 return window_line_number_buf; | |
| 7258 } | |
| 428 | 7259 } |
| 7260 | |
| 7261 | |
| 7262 /* Given a character representing an object in a modeline | |
| 7263 specification, return a string (stored into the global array | |
| 867 | 7264 `mode_spec_ibyte_string') with the information that object |
| 428 | 7265 represents. |
| 7266 | |
| 7267 This function is largely unchanged from previous versions of the | |
| 7268 redisplay engine. | |
| 7269 | |
| 7270 Warning! This code is also used for frame titles and can be called | |
| 7271 very early in the device/frame update process! JV | |
| 7272 */ | |
| 7273 | |
| 7274 static void | |
| 867 | 7275 decode_mode_spec (struct window *w, Ichar spec, int type) |
| 428 | 7276 { |
| 7277 Lisp_Object obj = Qnil; | |
| 4970 | 7278 const Ascbyte *str = NULL; |
| 428 | 7279 struct buffer *b = XBUFFER (w->buffer); |
| 7280 | |
| 867 | 7281 Dynarr_reset (mode_spec_ibyte_string); |
| 428 | 7282 |
| 7283 switch (spec) | |
| 7284 { | |
| 7285 /* print buffer name */ | |
| 7286 case 'b': | |
| 7287 obj = b->name; | |
| 7288 break; | |
| 7289 | |
| 7290 /* print visited file name */ | |
| 7291 case 'f': | |
| 7292 obj = b->filename; | |
| 7293 break; | |
| 7294 | |
| 7295 /* print the current column */ | |
| 7296 case 'c': | |
| 7297 { | |
| 4187 | 7298 Charbpos pt = (w == XWINDOW (Fselected_window (Qnil))) |
| 7299 ? BUF_PT (b) | |
| 7300 : marker_position (w->pointm[type]); | |
| 428 | 7301 int col = column_at_point (b, pt, 1) + !!column_number_start_at_one; |
| 4970 | 7302 Ascbyte buf[DECIMAL_PRINT_SIZE (long)]; |
| 428 | 7303 |
| 7304 long_to_string (buf, col); | |
| 7305 | |
| 867 | 7306 Dynarr_add_many (mode_spec_ibyte_string, |
| 7307 (const Ibyte *) buf, strlen (buf)); | |
| 428 | 7308 |
| 7309 goto decode_mode_spec_done; | |
| 7310 } | |
| 7311 /* print the file coding system */ | |
| 7312 case 'C': | |
| 7313 { | |
| 4187 | 7314 Lisp_Object codesys = b->buffer_file_coding_system; |
| 7315 /* Be very careful here not to get an error. */ | |
| 428 | 7316 if (NILP (codesys) || SYMBOLP (codesys) || CODING_SYSTEMP (codesys)) |
| 4187 | 7317 { |
| 7318 codesys = find_coding_system_for_text_file (codesys, 0); | |
| 428 | 7319 if (CODING_SYSTEMP (codesys)) |
| 4187 | 7320 obj = XCODING_SYSTEM_MNEMONIC (codesys); |
| 7321 } | |
| 428 | 7322 } |
| 7323 break; | |
| 7324 | |
| 7325 /* print the current line number */ | |
| 7326 case 'l': | |
| 7327 str = window_line_number (w, type); | |
| 7328 break; | |
| 7329 | |
| 7330 /* print value of mode-name (obsolete) */ | |
| 7331 case 'm': | |
| 7332 obj = b->mode_name; | |
| 7333 break; | |
| 7334 | |
| 7335 /* print hyphen and frame number, if != 1 */ | |
| 7336 case 'N': | |
| 7337 #ifdef HAVE_TTY | |
| 7338 { | |
| 7339 struct frame *f = XFRAME (w->frame); | |
| 7340 if (FRAME_TTY_P (f) && f->order_count > 1 && f->order_count <= 99999999) | |
| 7341 { | |
| 7342 /* Naughty, naughty */ | |
| 4970 | 7343 Ascbyte *writable_str = alloca_array (Ascbyte, 10); |
| 428 | 7344 sprintf (writable_str, "-%d", f->order_count); |
| 7345 str = writable_str; | |
| 7346 } | |
| 7347 } | |
| 7348 #endif /* HAVE_TTY */ | |
| 7349 break; | |
| 7350 | |
| 7351 /* print Narrow if appropriate */ | |
| 7352 case 'n': | |
| 7353 if (BUF_BEGV (b) > BUF_BEG (b) | |
| 7354 || BUF_ZV (b) < BUF_Z (b)) | |
| 7355 str = " Narrow"; | |
| 7356 break; | |
| 7357 | |
| 7358 /* print %, * or hyphen, if buffer is read-only, modified or neither */ | |
| 7359 case '*': | |
| 7360 str = (!NILP (b->read_only) | |
| 7361 ? "%" | |
| 7362 : ((BUF_MODIFF (b) > BUF_SAVE_MODIFF (b)) | |
| 7363 ? "*" | |
| 7364 : "-")); | |
| 7365 break; | |
| 7366 | |
| 7367 /* print * or hyphen -- XEmacs change to allow a buffer to be | |
| 4187 | 7368 read-only but still indicate whether it is modified. */ |
| 428 | 7369 case '+': |
| 7370 str = ((BUF_MODIFF (b) > BUF_SAVE_MODIFF (b)) | |
| 7371 ? "*" | |
| 7372 : (!NILP (b->read_only) | |
| 7373 ? "%" | |
| 7374 : "-")); | |
| 7375 break; | |
| 7376 | |
| 7377 /* #### defined in 19.29 decode_mode_spec, but not in | |
| 4187 | 7378 modeline-format doc string. */ |
| 428 | 7379 /* This differs from %* in that it ignores read-only-ness. */ |
| 7380 case '&': | |
| 7381 str = ((BUF_MODIFF (b) > BUF_SAVE_MODIFF (b)) | |
| 7382 ? "*" | |
| 7383 : "-"); | |
| 7384 break; | |
| 7385 | |
| 7386 /* print process status */ | |
| 7387 case 's': | |
| 7388 obj = Fget_buffer_process (w->buffer); | |
| 7389 if (NILP (obj)) | |
| 7390 str = GETTEXT ("no process"); | |
| 7391 else | |
| 7392 obj = Fsymbol_name (Fprocess_status (obj)); | |
| 7393 break; | |
| 7394 | |
| 7395 /* Print name of selected frame. */ | |
| 7396 case 'S': | |
| 7397 obj = XFRAME (w->frame)->name; | |
| 7398 break; | |
| 7399 | |
| 7400 /* indicate TEXT or BINARY */ | |
| 7401 case 't': | |
| 7402 /* #### NT does not use this any more. Now what? */ | |
| 7403 str = "T"; | |
| 7404 break; | |
| 7405 | |
| 7406 /* print percent of buffer above top of window, or Top, Bot or All */ | |
| 7407 case 'p': | |
| 7408 { | |
| 665 | 7409 Charbpos pos = marker_position (w->start[type]); |
| 428 | 7410 |
| 7411 /* This had better be while the desired lines are being done. */ | |
| 7412 if (w->window_end_pos[type] <= BUF_Z (b) - BUF_ZV (b)) | |
| 7413 { | |
| 7414 if (pos <= BUF_BEGV (b)) | |
| 7415 str = "All"; | |
| 7416 else | |
| 7417 str = "Bottom"; | |
| 7418 } | |
| 7419 else if (pos <= BUF_BEGV (b)) | |
| 7420 str = "Top"; | |
| 7421 else | |
| 7422 { | |
| 7423 /* This hard limit is ok since the string it will hold has a | |
| 4187 | 7424 fixed maximum length of 3. But just to be safe... */ |
| 4970 | 7425 Ascbyte buf[10]; |
| 428 | 7426 Charcount chars = pos - BUF_BEGV (b); |
| 7427 Charcount total = BUF_ZV (b) - BUF_BEGV (b); | |
| 7428 | |
| 7429 /* Avoid overflow on big buffers */ | |
| 7430 int percent = total > LONG_MAX/200 ? | |
| 7431 (chars + total/200) / (total / 100) : | |
| 7432 (chars * 100 + total/2) / total; | |
| 7433 | |
| 7434 /* We can't normally display a 3-digit number, so get us a | |
| 4187 | 7435 2-digit number that is close. */ |
| 428 | 7436 if (percent == 100) |
| 7437 percent = 99; | |
| 7438 | |
| 7439 sprintf (buf, "%d%%", percent); | |
| 867 | 7440 Dynarr_add_many (mode_spec_ibyte_string, (Ibyte *) buf, |
| 428 | 7441 strlen (buf)); |
| 7442 | |
| 7443 goto decode_mode_spec_done; | |
| 7444 } | |
| 7445 break; | |
| 7446 } | |
| 7447 | |
| 7448 /* print percent of buffer above bottom of window, perhaps plus | |
| 7449 Top, or print Bottom or All */ | |
| 7450 case 'P': | |
| 7451 { | |
| 665 | 7452 Charbpos toppos = marker_position (w->start[type]); |
| 7453 Charbpos botpos = BUF_Z (b) - w->window_end_pos[type]; | |
| 428 | 7454 |
| 7455 /* botpos is only accurate as of the last redisplay, so we can | |
| 4187 | 7456 only treat it as a hint. In particular, after erase-buffer, |
| 7457 botpos may be negative. */ | |
| 428 | 7458 if (botpos < toppos) |
| 7459 botpos = toppos; | |
| 7460 | |
| 7461 if (botpos >= BUF_ZV (b)) | |
| 7462 { | |
| 7463 if (toppos <= BUF_BEGV (b)) | |
| 7464 str = "All"; | |
| 7465 else | |
| 7466 str = "Bottom"; | |
| 7467 } | |
| 7468 else | |
| 7469 { | |
| 7470 /* This hard limit is ok since the string it will hold has a | |
| 4187 | 7471 fixed maximum length of around 6. But just to be safe... */ |
| 4970 | 7472 Ascbyte buf[10]; |
| 428 | 7473 Charcount chars = botpos - BUF_BEGV (b); |
| 7474 Charcount total = BUF_ZV (b) - BUF_BEGV (b); | |
| 7475 | |
| 7476 /* Avoid overflow on big buffers */ | |
| 7477 int percent = total > LONG_MAX/200 ? | |
| 7478 (chars + total/200) / (total / 100) : | |
| 7479 (chars * 100 + total/2) / max (total, 1); | |
| 7480 | |
| 7481 /* We can't normally display a 3-digit number, so get us a | |
| 4187 | 7482 2-digit number that is close. */ |
| 428 | 7483 if (percent == 100) |
| 7484 percent = 99; | |
| 7485 | |
| 7486 if (toppos <= BUF_BEGV (b)) | |
| 7487 sprintf (buf, "Top%d%%", percent); | |
| 7488 else | |
| 7489 sprintf (buf, "%d%%", percent); | |
| 7490 | |
| 867 | 7491 Dynarr_add_many (mode_spec_ibyte_string, (Ibyte *) buf, |
| 428 | 7492 strlen (buf)); |
| 7493 | |
| 7494 goto decode_mode_spec_done; | |
| 7495 } | |
| 7496 break; | |
| 7497 } | |
| 7498 | |
| 7499 /* print % */ | |
| 7500 case '%': | |
| 7501 str = "%"; | |
| 7502 break; | |
| 7503 | |
| 7504 /* print one [ for each recursive editing level. */ | |
| 7505 case '[': | |
| 7506 { | |
| 7507 int i; | |
| 7508 | |
| 7509 if (command_loop_level > 5) | |
| 7510 { | |
| 7511 str = "[[[... "; | |
| 7512 break; | |
| 7513 } | |
| 7514 | |
| 7515 for (i = 0; i < command_loop_level; i++) | |
| 867 | 7516 Dynarr_add (mode_spec_ibyte_string, '['); |
| 428 | 7517 |
| 7518 goto decode_mode_spec_done; | |
| 7519 } | |
| 7520 | |
| 7521 /* print one ] for each recursive editing level. */ | |
| 7522 case ']': | |
| 7523 { | |
| 7524 int i; | |
| 7525 | |
| 7526 if (command_loop_level > 5) | |
| 7527 { | |
| 7528 str = "...]]]"; | |
| 7529 break; | |
| 7530 } | |
| 7531 | |
| 7532 for (i = 0; i < command_loop_level; i++) | |
| 867 | 7533 Dynarr_add (mode_spec_ibyte_string, ']'); |
| 428 | 7534 |
| 7535 goto decode_mode_spec_done; | |
| 7536 } | |
| 7537 | |
| 7538 /* print infinitely many dashes -- handle at top level now */ | |
| 7539 case '-': | |
| 7540 break; | |
| 7541 | |
| 7542 } | |
| 7543 | |
| 7544 if (STRINGP (obj)) | |
| 867 | 7545 Dynarr_add_many (mode_spec_ibyte_string, |
| 428 | 7546 XSTRING_DATA (obj), |
| 7547 XSTRING_LENGTH (obj)); | |
| 7548 else if (str) | |
| 867 | 7549 Dynarr_add_many (mode_spec_ibyte_string, (Ibyte *) str, strlen (str)); |
| 428 | 7550 |
| 7551 decode_mode_spec_done: | |
| 867 | 7552 Dynarr_add (mode_spec_ibyte_string, '\0'); |
| 428 | 7553 } |
| 7554 | |
| 7555 /* Given a display line, free all of its data structures. */ | |
| 7556 | |
| 7557 static void | |
| 7558 free_display_line (struct display_line *dl) | |
| 7559 { | |
| 7560 int block; | |
| 7561 | |
| 7562 if (dl->display_blocks) | |
| 7563 { | |
| 7564 for (block = 0; block < Dynarr_largest (dl->display_blocks); block++) | |
| 4187 | 7565 { |
| 428 | 7566 struct display_block *db = Dynarr_atp (dl->display_blocks, block); |
| 7567 | |
| 7568 Dynarr_free (db->runes); | |
| 7569 } | |
| 7570 | |
| 7571 Dynarr_free (dl->display_blocks); | |
| 7572 dl->display_blocks = NULL; | |
| 7573 } | |
| 7574 | |
| 7575 if (dl->left_glyphs) | |
| 7576 { | |
| 7577 Dynarr_free (dl->left_glyphs); | |
| 7578 dl->left_glyphs = NULL; | |
| 7579 } | |
| 7580 | |
| 7581 if (dl->right_glyphs) | |
| 7582 { | |
| 7583 Dynarr_free (dl->right_glyphs); | |
| 7584 dl->right_glyphs = NULL; | |
| 7585 } | |
| 7586 } | |
| 7587 | |
| 7588 | |
| 7589 /* Given an array of display lines, free them and all data structures | |
| 7590 contained within them. */ | |
| 7591 | |
| 7592 void | |
| 7593 free_display_lines (display_line_dynarr *dla) | |
| 7594 { | |
| 7595 int line; | |
| 7596 | |
| 7597 for (line = 0; line < Dynarr_largest (dla); line++) | |
| 7598 { | |
| 7599 free_display_line (Dynarr_atp (dla, line)); | |
| 7600 } | |
| 7601 | |
| 7602 Dynarr_free (dla); | |
| 7603 } | |
| 7604 | |
| 7605 /* Call internal free routine for each set of display lines. */ | |
| 7606 | |
| 7607 void | |
| 7608 free_display_structs (struct window_mirror *mir) | |
| 7609 { | |
| 7610 if (mir->current_display_lines) | |
| 7611 { | |
| 7612 free_display_lines (mir->current_display_lines); | |
| 7613 mir->current_display_lines = 0; | |
| 7614 } | |
| 7615 | |
| 7616 if (mir->desired_display_lines) | |
| 7617 { | |
| 7618 free_display_lines (mir->desired_display_lines); | |
| 7619 mir->desired_display_lines = 0; | |
| 7620 } | |
| 7621 } | |
| 7622 | |
| 7623 | |
| 7624 static void | |
| 7625 mark_glyph_block_dynarr (glyph_block_dynarr *gba) | |
| 7626 { | |
| 7627 if (gba) | |
| 7628 { | |
| 4967 | 7629 glyph_block *gb = Dynarr_begin (gba); |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
7630 glyph_block *gb_last = Dynarr_past_lastp (gba); |
| 428 | 7631 |
| 7632 for (; gb < gb_last; gb++) | |
| 7633 { | |
| 7634 if (!NILP (gb->glyph)) | |
| 7635 mark_object (gb->glyph); | |
| 7636 if (!NILP (gb->extent)) | |
| 7637 mark_object (gb->extent); | |
| 7638 } | |
| 7639 } | |
| 7640 } | |
| 7641 | |
| 442 | 7642 /* See the comment in image_instantiate_cache_result as to why marking |
| 7643 the glyph will also mark the image_instance. */ | |
| 7644 void | |
| 428 | 7645 mark_redisplay_structs (display_line_dynarr *dla) |
| 7646 { | |
|
4844
91b3d00e717f
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Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
7647 display_line *dl = Dynarr_begin (dla); |
|
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
7648 display_line *dl_last = Dynarr_past_lastp (dla); |
| 428 | 7649 |
| 7650 for (; dl < dl_last; dl++) | |
| 7651 { | |
| 7652 display_block_dynarr *dba = dl->display_blocks; | |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
7653 display_block *db = Dynarr_begin (dba); |
|
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
7654 display_block *db_last = Dynarr_past_lastp (dba); |
| 428 | 7655 |
| 7656 for (; db < db_last; db++) | |
| 7657 { | |
| 7658 rune_dynarr *ra = db->runes; | |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
7659 rune *r = Dynarr_begin (ra); |
|
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
7660 rune *r_last = Dynarr_past_lastp (ra); |
| 428 | 7661 |
| 7662 for (; r < r_last; r++) | |
| 7663 { | |
| 7664 if (r->type == RUNE_DGLYPH) | |
| 7665 { | |
| 7666 if (!NILP (r->object.dglyph.glyph)) | |
| 7667 mark_object (r->object.dglyph.glyph); | |
| 7668 if (!NILP (r->object.dglyph.extent)) | |
| 7669 mark_object (r->object.dglyph.extent); | |
| 7670 } | |
| 7671 } | |
| 7672 } | |
| 7673 | |
| 7674 mark_glyph_block_dynarr (dl->left_glyphs); | |
| 7675 mark_glyph_block_dynarr (dl->right_glyphs); | |
| 7676 } | |
| 7677 } | |
| 7678 | |
| 7679 | |
| 2367 | 7680 |
| 7681 /* | |
| 7682 | |
| 7683 Info on line-start cache: | |
| 7684 | |
| 7685 (Info-goto-node "(internals)Line Start Cache") | |
| 7686 */ | |
| 428 | 7687 |
| 7688 /* This will get used quite a bit so we don't want to be constantly | |
| 7689 allocating and freeing it. */ | |
| 7690 static line_start_cache_dynarr *internal_cache; | |
| 7691 | |
| 7692 /* Makes internal_cache represent the TYPE display structs and only | |
| 7693 the TYPE display structs. */ | |
| 7694 | |
| 7695 static void | |
| 7696 update_internal_cache_list (struct window *w, int type) | |
| 7697 { | |
| 7698 int line; | |
| 7699 display_line_dynarr *dla = window_display_lines (w, type); | |
| 7700 | |
| 7701 Dynarr_reset (internal_cache); | |
| 7702 for (line = 0; line < Dynarr_length (dla); line++) | |
| 7703 { | |
| 7704 struct display_line *dl = Dynarr_atp (dla, line); | |
| 7705 | |
| 7706 if (dl->modeline) | |
| 7707 continue; | |
| 7708 else | |
| 7709 { | |
| 7710 struct line_start_cache lsc; | |
| 434 | 7711 |
| 826 | 7712 lsc.start = dl->charpos; |
| 7713 lsc.end = dl->end_charpos; | |
| 428 | 7714 lsc.height = dl->ascent + dl->descent; |
| 7715 | |
| 7716 Dynarr_add (internal_cache, lsc); | |
| 7717 } | |
| 7718 } | |
| 7719 } | |
| 7720 | |
| 7721 /* Reset the line cache if necessary. This should be run at the | |
| 7722 beginning of any function which access the cache. */ | |
| 7723 | |
| 7724 static void | |
| 7725 validate_line_start_cache (struct window *w) | |
| 7726 { | |
| 7727 struct buffer *b = XBUFFER (w->buffer); | |
| 7728 struct frame *f = XFRAME (w->frame); | |
| 7729 | |
| 7730 if (!w->line_cache_validation_override) | |
| 7731 { | |
| 7732 /* f->extents_changed used to be in here because extent face and | |
| 4187 | 7733 size changes can cause text shifting. However, the extent |
| 7734 covering the region is constantly having its face set and | |
| 7735 priority altered by the mouse code. This means that the line | |
| 7736 start cache is constantly being invalidated. This is bad | |
| 7737 since the mouse code also triggers heavy usage of the cache. | |
| 7738 Since it is an unlikely that f->extents being changed | |
| 7739 indicates that the cache really needs to be updated and if it | |
| 7740 does redisplay will catch it pretty quickly we no longer | |
| 7741 invalidate the cache if it is set. This greatly speeds up | |
| 7742 dragging out regions with the mouse. */ | |
| 428 | 7743 if (XINT (w->line_cache_last_updated) < BUF_MODIFF (b) |
| 7744 || f->faces_changed | |
| 7745 || f->clip_changed) | |
| 7746 { | |
| 7747 Dynarr_reset (w->line_start_cache); | |
| 7748 } | |
| 7749 } | |
| 7750 } | |
| 7751 | |
| 7752 /* Return the very first buffer position contained in the given | |
| 7753 window's cache, or -1 if the cache is empty. Assumes that the | |
| 7754 cache is valid. */ | |
| 7755 | |
| 665 | 7756 static Charbpos |
| 428 | 7757 line_start_cache_start (struct window *w) |
| 7758 { | |
| 7759 line_start_cache_dynarr *cache = w->line_start_cache; | |
| 7760 | |
| 7761 if (!Dynarr_length (cache)) | |
| 7762 return -1; | |
| 7763 else | |
| 4967 | 7764 return Dynarr_begin (cache)->start; |
| 428 | 7765 } |
| 7766 | |
| 7767 /* Return the very last buffer position contained in the given | |
| 7768 window's cache, or -1 if the cache is empty. Assumes that the | |
| 7769 cache is valid. */ | |
| 7770 | |
| 665 | 7771 static Charbpos |
| 428 | 7772 line_start_cache_end (struct window *w) |
| 7773 { | |
| 7774 line_start_cache_dynarr *cache = w->line_start_cache; | |
| 7775 | |
| 7776 if (!Dynarr_length (cache)) | |
| 7777 return -1; | |
| 7778 else | |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
7779 return Dynarr_lastp (cache)->end; |
| 428 | 7780 } |
| 7781 | |
| 7782 /* Return the index of the line POINT is contained within in window | |
| 7783 W's line start cache. It will enlarge the cache or move the cache | |
| 7784 window in order to have POINT be present in the cache. MIN_PAST is | |
| 7785 a guarantee of the number of entries in the cache present on either | |
| 7786 side of POINT (unless a buffer boundary is hit). If MIN_PAST is -1 | |
| 7787 then it will be treated as 0, but the cache window will not be | |
| 7788 allowed to shift. Returns -1 if POINT cannot be found in the cache | |
| 7789 for any reason. */ | |
| 7790 | |
| 7791 int | |
| 665 | 7792 point_in_line_start_cache (struct window *w, Charbpos point, int min_past) |
| 428 | 7793 { |
| 7794 struct buffer *b = XBUFFER (w->buffer); | |
| 7795 line_start_cache_dynarr *cache = w->line_start_cache; | |
| 647 | 7796 int top, bottom, pos; |
| 428 | 7797 |
| 7798 validate_line_start_cache (w); | |
| 7799 w->line_cache_validation_override++; | |
| 7800 | |
| 7801 /* Let functions pass in negative values, but we still treat -1 | |
| 7802 specially. */ | |
| 7803 /* #### bogosity alert */ | |
| 7804 if (min_past < 0 && min_past != -1) | |
| 7805 min_past = -min_past; | |
| 7806 | |
| 7807 if (!Dynarr_length (cache) || line_start_cache_start (w) > point | |
| 7808 || line_start_cache_end (w) < point) | |
| 7809 { | |
| 7810 int loop; | |
| 7811 int win_char_height = window_char_height (w, 1); | |
| 7812 | |
| 7813 /* Occasionally we get here with a 0 height | |
| 4187 | 7814 window. find_next_newline_no_quit will abort if we pass it a |
| 7815 count of 0 so handle that case. */ | |
| 428 | 7816 if (!win_char_height) |
| 7817 win_char_height = 1; | |
| 7818 | |
| 7819 if (!Dynarr_length (cache)) | |
| 7820 { | |
| 665 | 7821 Charbpos from = find_next_newline_no_quit (b, point, -1); |
| 7822 Charbpos to = find_next_newline_no_quit (b, from, win_char_height); | |
| 428 | 7823 |
| 7824 update_line_start_cache (w, from, to, point, 0); | |
| 7825 | |
| 7826 if (!Dynarr_length (cache)) | |
| 7827 { | |
| 7828 w->line_cache_validation_override--; | |
| 7829 return -1; | |
| 7830 } | |
| 7831 } | |
| 7832 | |
| 7833 assert (Dynarr_length (cache)); | |
| 7834 | |
| 7835 loop = 0; | |
| 7836 while (line_start_cache_start (w) > point | |
| 7837 && (loop < cache_adjustment || min_past == -1)) | |
| 7838 { | |
| 665 | 7839 Charbpos from, to; |
| 428 | 7840 |
| 7841 from = line_start_cache_start (w); | |
| 7842 if (from <= BUF_BEGV (b)) | |
| 7843 break; | |
| 7844 | |
| 7845 from = find_next_newline_no_quit (b, from, -win_char_height); | |
| 7846 to = line_start_cache_end (w); | |
| 7847 | |
| 7848 update_line_start_cache (w, from, to, point, 0); | |
| 7849 loop++; | |
| 7850 } | |
| 7851 | |
| 7852 if (line_start_cache_start (w) > point) | |
| 7853 { | |
| 665 | 7854 Charbpos from, to; |
| 428 | 7855 |
| 7856 from = find_next_newline_no_quit (b, point, -1); | |
| 7857 if (from >= BUF_ZV (b)) | |
| 7858 { | |
| 7859 to = find_next_newline_no_quit (b, from, -win_char_height); | |
| 7860 from = to; | |
| 7861 to = BUF_ZV (b); | |
| 7862 } | |
| 7863 else | |
| 7864 to = find_next_newline_no_quit (b, from, win_char_height); | |
| 7865 | |
| 7866 update_line_start_cache (w, from, to, point, 0); | |
| 7867 } | |
| 7868 | |
| 7869 loop = 0; | |
| 7870 while (line_start_cache_end (w) < point | |
| 7871 && (loop < cache_adjustment || min_past == -1)) | |
| 7872 { | |
| 665 | 7873 Charbpos from, to; |
| 428 | 7874 |
| 7875 to = line_start_cache_end (w); | |
| 7876 if (to >= BUF_ZV (b)) | |
| 7877 break; | |
| 7878 | |
| 7879 from = line_start_cache_end (w); | |
| 7880 to = find_next_newline_no_quit (b, from, win_char_height); | |
| 7881 | |
| 7882 update_line_start_cache (w, from, to, point, 0); | |
| 7883 loop++; | |
| 7884 } | |
| 7885 | |
| 7886 if (line_start_cache_end (w) < point) | |
| 7887 { | |
| 665 | 7888 Charbpos from, to; |
| 428 | 7889 |
| 7890 from = find_next_newline_no_quit (b, point, -1); | |
| 7891 if (from >= BUF_ZV (b)) | |
| 7892 { | |
| 7893 to = find_next_newline_no_quit (b, from, -win_char_height); | |
| 7894 from = to; | |
| 7895 to = BUF_ZV (b); | |
| 7896 } | |
| 7897 else | |
| 7898 to = find_next_newline_no_quit (b, from, win_char_height); | |
| 7899 | |
| 7900 update_line_start_cache (w, from, to, point, 0); | |
| 7901 } | |
| 7902 } | |
| 7903 | |
| 7904 assert (Dynarr_length (cache)); | |
| 7905 | |
| 7906 if (min_past == -1) | |
| 7907 min_past = 0; | |
| 7908 | |
| 7909 /* This could happen if the buffer is narrowed. */ | |
| 7910 if (line_start_cache_start (w) > point | |
| 7911 || line_start_cache_end (w) < point) | |
| 7912 { | |
| 7913 w->line_cache_validation_override--; | |
| 7914 return -1; | |
| 7915 } | |
| 7916 | |
| 7917 find_point_loop: | |
| 7918 | |
| 7919 top = Dynarr_length (cache) - 1; | |
| 7920 bottom = 0; | |
| 7921 | |
| 7922 while (1) | |
| 7923 { | |
| 647 | 7924 int new_pos; |
| 665 | 7925 Charbpos start, end; |
| 428 | 7926 |
| 7927 pos = (bottom + top + 1) >> 1; | |
| 7928 start = Dynarr_atp (cache, pos)->start; | |
| 7929 end = Dynarr_atp (cache, pos)->end; | |
| 7930 | |
| 7931 if (point >= start && point <= end) | |
| 7932 { | |
| 7933 if (pos < min_past && line_start_cache_start (w) > BUF_BEGV (b)) | |
| 7934 { | |
| 665 | 7935 Charbpos from = |
| 428 | 7936 find_next_newline_no_quit (b, line_start_cache_start (w), |
| 7937 -min_past - 1); | |
| 665 | 7938 Charbpos to = line_start_cache_end (w); |
| 428 | 7939 |
| 7940 update_line_start_cache (w, from, to, point, 0); | |
| 7941 goto find_point_loop; | |
| 7942 } | |
| 7943 else if ((Dynarr_length (cache) - pos - 1) < min_past | |
| 7944 && line_start_cache_end (w) < BUF_ZV (b)) | |
| 7945 { | |
| 665 | 7946 Charbpos from = line_start_cache_end (w); |
| 7947 Charbpos to = find_next_newline_no_quit (b, from, | |
| 428 | 7948 (min_past |
| 7949 ? min_past | |
| 7950 : 1)); | |
| 7951 | |
| 7952 update_line_start_cache (w, from, to, point, 0); | |
| 7953 goto find_point_loop; | |
| 7954 } | |
| 7955 else | |
| 7956 { | |
| 7957 w->line_cache_validation_override--; | |
| 7958 return pos; | |
| 7959 } | |
| 7960 } | |
| 7961 else if (point > end) | |
| 7962 bottom = pos + 1; | |
| 7963 else if (point < start) | |
| 7964 top = pos - 1; | |
| 7965 else | |
| 2500 | 7966 ABORT (); |
| 428 | 7967 |
| 7968 new_pos = (bottom + top + 1) >> 1; | |
| 7969 if (pos == new_pos) | |
| 7970 { | |
| 7971 w->line_cache_validation_override--; | |
| 7972 return -1; | |
| 7973 } | |
| 7974 } | |
| 7975 } | |
| 7976 | |
| 7977 /* Return a boolean indicating if POINT would be visible in window W | |
| 1708 | 7978 if display of the window was to begin at STARTP. If PARTIALLY is |
| 7979 zero, then if POINT has fewer visible pixels than the window clip, | |
| 7980 0 is returned; otherwise, 1 is returned if POINT has any visible | |
| 7981 pixels. */ | |
| 428 | 7982 int |
| 1708 | 7983 point_would_be_visible (struct window *w, Charbpos startp, Charbpos point, |
| 7984 int partially) | |
| 428 | 7985 { |
| 7986 struct buffer *b = XBUFFER (w->buffer); | |
| 430 | 7987 int pixpos = -WINDOW_TEXT_TOP_CLIP(w); |
| 428 | 7988 int bottom = WINDOW_TEXT_HEIGHT (w); |
| 7989 int start_elt; | |
| 7990 | |
| 7991 /* If point is before the intended start it obviously can't be visible. */ | |
| 7992 if (point < startp) | |
| 7993 return 0; | |
| 7994 | |
| 7995 /* If point or start are not in the accessible buffer range, then | |
| 7996 fail. */ | |
| 7997 if (startp < BUF_BEGV (b) || startp > BUF_ZV (b) | |
| 7998 || point < BUF_BEGV (b) || point > BUF_ZV (b)) | |
| 7999 return 0; | |
| 8000 | |
| 8001 validate_line_start_cache (w); | |
| 8002 w->line_cache_validation_override++; | |
| 8003 | |
| 8004 start_elt = point_in_line_start_cache (w, startp, 0); | |
| 8005 if (start_elt == -1) | |
| 8006 { | |
| 8007 w->line_cache_validation_override--; | |
| 8008 return 0; | |
| 8009 } | |
| 8010 | |
| 8011 assert (line_start_cache_start (w) <= startp | |
| 8012 && line_start_cache_end (w) >= startp); | |
| 8013 | |
| 8014 while (1) | |
| 8015 { | |
| 8016 int height; | |
| 8017 | |
| 8018 /* Expand the cache if necessary. */ | |
| 8019 if (start_elt == Dynarr_length (w->line_start_cache)) | |
| 8020 { | |
| 665 | 8021 Charbpos old_startp = |
| 428 | 8022 Dynarr_atp (w->line_start_cache, start_elt - 1)->start; |
| 8023 | |
| 8024 start_elt = point_in_line_start_cache (w, old_startp, | |
| 8025 window_char_height (w, 0)); | |
| 8026 | |
| 8027 /* We've already actually processed old_startp, so increment | |
| 4187 | 8028 immediately. */ |
| 428 | 8029 start_elt++; |
| 8030 | |
| 8031 /* If this happens we didn't add any extra elements. Bummer. */ | |
| 8032 if (start_elt == Dynarr_length (w->line_start_cache)) | |
| 8033 { | |
| 8034 w->line_cache_validation_override--; | |
| 8035 return 0; | |
| 8036 } | |
| 8037 } | |
| 8038 | |
| 8039 height = Dynarr_atp (w->line_start_cache, start_elt)->height; | |
| 8040 | |
| 8041 if (pixpos + height > bottom) | |
| 8042 { | |
| 1708 | 8043 if (bottom - pixpos < (partially ? 0 : VERTICAL_CLIP (w, 0))) |
| 428 | 8044 { |
| 8045 w->line_cache_validation_override--; | |
| 8046 return 0; | |
| 8047 } | |
| 8048 } | |
| 8049 | |
| 8050 pixpos += height; | |
| 8051 if (point <= Dynarr_atp (w->line_start_cache, start_elt)->end) | |
| 8052 { | |
| 8053 w->line_cache_validation_override--; | |
| 8054 return 1; | |
| 8055 } | |
| 8056 | |
| 8057 start_elt++; | |
| 8058 } | |
| 8059 } | |
| 8060 | |
| 8061 /* For the given window W, if display starts at STARTP, what will be | |
| 8062 the buffer position at the beginning or end of the last line | |
| 8063 displayed. The end of the last line is also know as the window end | |
| 8064 position. | |
| 8065 | |
| 442 | 8066 WARNING: It is possible that redisplay failed to layout any lines for the |
| 8067 windows. Under normal circumstances this is rare. However it seems that it | |
| 8068 does occur in the following situation: A mouse event has come in and we | |
| 8069 need to compute its location in a window. That code (in | |
| 8070 pixel_to_glyph_translation) already can handle 0 as an error return value. | |
| 8071 | |
| 428 | 8072 #### With a little work this could probably be reworked as just a |
| 8073 call to start_with_line_at_pixpos. */ | |
| 8074 | |
| 665 | 8075 static Charbpos |
| 8076 start_end_of_last_line (struct window *w, Charbpos startp, int end, | |
| 4187 | 8077 int may_error) |
| 428 | 8078 { |
| 8079 struct buffer *b = XBUFFER (w->buffer); | |
| 8080 line_start_cache_dynarr *cache = w->line_start_cache; | |
| 8081 int pixpos = 0; | |
| 8082 int bottom = WINDOW_TEXT_HEIGHT (w); | |
| 665 | 8083 Charbpos cur_start; |
| 428 | 8084 int start_elt; |
| 8085 | |
| 8086 validate_line_start_cache (w); | |
| 8087 w->line_cache_validation_override++; | |
| 8088 | |
| 8089 if (startp < BUF_BEGV (b)) | |
| 8090 startp = BUF_BEGV (b); | |
| 8091 else if (startp > BUF_ZV (b)) | |
| 8092 startp = BUF_ZV (b); | |
| 8093 cur_start = startp; | |
| 8094 | |
| 8095 start_elt = point_in_line_start_cache (w, cur_start, 0); | |
| 8096 if (start_elt == -1) | |
| 442 | 8097 return may_error ? 0 : startp; |
| 428 | 8098 |
| 8099 while (1) | |
| 8100 { | |
| 8101 int height = Dynarr_atp (cache, start_elt)->height; | |
| 8102 | |
| 8103 cur_start = Dynarr_atp (cache, start_elt)->start; | |
| 8104 | |
| 8105 if (pixpos + height > bottom) | |
| 8106 { | |
| 8107 /* Adjust for any possible clip. */ | |
| 8108 if (bottom - pixpos < VERTICAL_CLIP (w, 0)) | |
| 8109 start_elt--; | |
| 8110 | |
| 8111 if (start_elt < 0) | |
| 8112 { | |
| 8113 w->line_cache_validation_override--; | |
| 8114 if (end) | |
| 8115 return BUF_ZV (b); | |
| 8116 else | |
| 8117 return BUF_BEGV (b); | |
| 8118 } | |
| 8119 else | |
| 8120 { | |
| 8121 w->line_cache_validation_override--; | |
| 8122 if (end) | |
| 8123 return Dynarr_atp (cache, start_elt)->end; | |
| 8124 else | |
| 8125 return Dynarr_atp (cache, start_elt)->start; | |
| 8126 } | |
| 8127 } | |
| 8128 | |
| 8129 pixpos += height; | |
| 8130 start_elt++; | |
| 8131 if (start_elt == Dynarr_length (cache)) | |
| 8132 { | |
| 665 | 8133 Charbpos from = line_start_cache_end (w); |
| 428 | 8134 int win_char_height = window_char_height (w, 0); |
| 665 | 8135 Charbpos to = find_next_newline_no_quit (b, from, |
| 428 | 8136 (win_char_height |
| 8137 ? win_char_height | |
| 8138 : 1)); | |
| 8139 | |
| 8140 /* We've hit the end of the bottom so that's what it is. */ | |
| 8141 if (from >= BUF_ZV (b)) | |
| 8142 { | |
| 8143 w->line_cache_validation_override--; | |
| 8144 return BUF_ZV (b); | |
| 8145 } | |
| 8146 | |
| 8147 update_line_start_cache (w, from, to, BUF_PT (b), 0); | |
| 8148 | |
| 8149 /* Updating the cache invalidates any current indexes. */ | |
| 8150 start_elt = point_in_line_start_cache (w, cur_start, -1) + 1; | |
| 8151 } | |
| 8152 } | |
| 8153 } | |
| 8154 | |
| 8155 /* For the given window W, if display starts at STARTP, what will be | |
| 8156 the buffer position at the beginning of the last line displayed. */ | |
| 8157 | |
| 665 | 8158 Charbpos |
| 8159 start_of_last_line (struct window *w, Charbpos startp) | |
| 428 | 8160 { |
| 442 | 8161 return start_end_of_last_line (w, startp, 0 , 0); |
| 428 | 8162 } |
| 8163 | |
| 8164 /* For the given window W, if display starts at STARTP, what will be | |
| 8165 the buffer position at the end of the last line displayed. This is | |
| 8166 also know as the window end position. */ | |
| 8167 | |
| 665 | 8168 Charbpos |
| 8169 end_of_last_line (struct window *w, Charbpos startp) | |
| 428 | 8170 { |
| 442 | 8171 return start_end_of_last_line (w, startp, 1, 0); |
| 428 | 8172 } |
| 8173 | |
| 665 | 8174 static Charbpos |
| 8175 end_of_last_line_may_error (struct window *w, Charbpos startp) | |
| 442 | 8176 { |
| 8177 return start_end_of_last_line (w, startp, 1, 1); | |
| 8178 } | |
| 8179 | |
| 8180 | |
| 428 | 8181 /* For window W, what does the starting position have to be so that |
| 8182 the line containing POINT will cover pixel position PIXPOS. */ | |
| 8183 | |
| 665 | 8184 Charbpos |
| 8185 start_with_line_at_pixpos (struct window *w, Charbpos point, int pixpos) | |
| 428 | 8186 { |
| 8187 struct buffer *b = XBUFFER (w->buffer); | |
| 8188 int cur_elt; | |
| 665 | 8189 Charbpos cur_pos, prev_pos = point; |
| 428 | 8190 int point_line_height; |
| 8191 int pixheight = pixpos - WINDOW_TEXT_TOP (w); | |
| 8192 | |
| 8193 validate_line_start_cache (w); | |
| 8194 w->line_cache_validation_override++; | |
| 8195 | |
| 8196 cur_elt = point_in_line_start_cache (w, point, 0); | |
| 8197 /* #### See comment in update_line_start_cache about big minibuffers. */ | |
| 8198 if (cur_elt < 0) | |
| 8199 { | |
| 8200 w->line_cache_validation_override--; | |
| 8201 return point; | |
| 8202 } | |
| 8203 | |
| 8204 point_line_height = Dynarr_atp (w->line_start_cache, cur_elt)->height; | |
| 8205 | |
| 8206 while (1) | |
| 8207 { | |
| 8208 cur_pos = Dynarr_atp (w->line_start_cache, cur_elt)->start; | |
| 8209 | |
| 8210 pixheight -= Dynarr_atp (w->line_start_cache, cur_elt)->height; | |
| 8211 | |
| 8212 /* Do not take into account the value of vertical_clip here. | |
| 4187 | 8213 That is the responsibility of the calling functions. */ |
| 428 | 8214 if (pixheight < 0) |
| 8215 { | |
| 8216 w->line_cache_validation_override--; | |
| 8217 if (-pixheight > point_line_height) | |
| 8218 /* We can't make the target line cover pixpos, so put it | |
| 8219 above pixpos. That way it will at least be visible. */ | |
| 8220 return prev_pos; | |
| 8221 else | |
| 8222 return cur_pos; | |
| 8223 } | |
| 8224 | |
| 8225 cur_elt--; | |
| 8226 while (cur_elt < 0) | |
| 8227 { | |
| 665 | 8228 Charbpos from, to; |
| 428 | 8229 int win_char_height; |
| 8230 | |
| 8231 if (cur_pos <= BUF_BEGV (b)) | |
| 8232 { | |
| 8233 w->line_cache_validation_override--; | |
| 8234 return BUF_BEGV (b); | |
| 8235 } | |
| 8236 | |
| 8237 win_char_height = window_char_height (w, 0); | |
| 8238 if (!win_char_height) | |
| 8239 win_char_height = 1; | |
| 8240 | |
| 8241 from = find_next_newline_no_quit (b, cur_pos, -win_char_height); | |
| 8242 to = line_start_cache_end (w); | |
| 8243 update_line_start_cache (w, from, to, point, 0); | |
| 8244 | |
| 8245 cur_elt = point_in_line_start_cache (w, cur_pos, 2) - 1; | |
| 8246 assert (cur_elt >= -1); | |
| 8247 /* This used to be cur_elt>=0 under the assumption that if | |
| 8248 point is in the top line and not at BUF_BEGV, then | |
| 434 | 8249 setting the window_start to a newline before the start of |
| 428 | 8250 the first line will always cause scrolling. |
| 8251 | |
| 8252 However in my (jv) opinion this is wrong. That new line | |
| 8253 can be hidden in various ways: invisible extents, an | |
| 8254 explicit window-start not at a newline character etc. | |
| 8255 The existence of those are indeed known to create crashes | |
| 8256 on that assert. So we have no option but to continue the | |
| 8257 search if we found point at the top of the line_start_cache | |
| 8258 again. */ | |
| 4967 | 8259 cur_pos = Dynarr_begin (w->line_start_cache)->start; |
| 428 | 8260 } |
| 8261 prev_pos = cur_pos; | |
| 8262 } | |
| 8263 } | |
| 8264 | |
| 8265 /* For window W, what does the starting position have to be so that | |
| 8266 the line containing point is on display line LINE. If LINE is | |
| 8267 positive it is considered to be the number of lines from the top of | |
| 8268 the window (0 is the top line). If it is negative the number is | |
| 8269 considered to be the number of lines from the bottom (-1 is the | |
| 8270 bottom line). */ | |
| 8271 | |
| 665 | 8272 Charbpos |
| 8273 start_with_point_on_display_line (struct window *w, Charbpos point, int line) | |
| 428 | 8274 { |
| 8275 validate_line_start_cache (w); | |
| 8276 w->line_cache_validation_override++; | |
| 8277 | |
| 8278 if (line >= 0) | |
| 8279 { | |
| 8280 int cur_elt = point_in_line_start_cache (w, point, line); | |
| 8281 | |
| 8282 if (cur_elt - line < 0) | |
| 8283 cur_elt = 0; /* Hit the top */ | |
| 8284 else | |
| 8285 cur_elt -= line; | |
| 8286 | |
| 8287 w->line_cache_validation_override--; | |
| 8288 return Dynarr_atp (w->line_start_cache, cur_elt)->start; | |
| 8289 } | |
| 8290 else | |
| 8291 { | |
| 8292 /* The calculated value of pixpos is correct for the bottom line | |
| 4187 | 8293 or what we want when line is -1. Therefore we subtract one |
| 8294 because we have already handled one line. */ | |
| 428 | 8295 int new_line = -line - 1; |
| 8296 int cur_elt = point_in_line_start_cache (w, point, new_line); | |
| 8297 int pixpos = WINDOW_TEXT_BOTTOM (w); | |
| 665 | 8298 Charbpos retval, search_point; |
| 428 | 8299 |
| 8300 /* If scroll_on_clipped_lines is false, the last "visible" line of | |
| 4187 | 8301 the window covers the pixel at WINDOW_TEXT_BOTTOM (w) - 1. |
| 8302 If s_o_c_l is true, then we don't want to count a clipped | |
| 8303 line, so back up from the bottom by the height of the line | |
| 8304 containing point. */ | |
| 428 | 8305 if (scroll_on_clipped_lines) |
| 8306 pixpos -= Dynarr_atp (w->line_start_cache, cur_elt)->height; | |
| 8307 else | |
| 8308 pixpos -= 1; | |
| 8309 | |
| 8310 if (cur_elt + new_line >= Dynarr_length (w->line_start_cache)) | |
| 8311 { | |
| 8312 /* Hit the bottom of the buffer. */ | |
| 8313 int adjustment = | |
| 8314 (cur_elt + new_line) - Dynarr_length (w->line_start_cache) + 1; | |
| 8315 Lisp_Object window; | |
| 8316 int defheight; | |
| 8317 | |
| 793 | 8318 window = wrap_window (w); |
|
5047
07dcc7000bbf
put width before height consistently, fix a real bug found in the process
Ben Wing <ben@xemacs.org>
parents:
5043
diff
changeset
|
8319 default_face_width_and_height (window, 0, &defheight); |
| 428 | 8320 |
| 8321 cur_elt = Dynarr_length (w->line_start_cache) - 1; | |
| 8322 | |
| 8323 pixpos -= (adjustment * defheight); | |
| 8324 if (pixpos < WINDOW_TEXT_TOP (w)) | |
| 8325 pixpos = WINDOW_TEXT_TOP (w); | |
| 8326 } | |
| 8327 else | |
| 8328 cur_elt = cur_elt + new_line; | |
| 8329 | |
| 8330 search_point = Dynarr_atp (w->line_start_cache, cur_elt)->start; | |
| 8331 | |
| 8332 retval = start_with_line_at_pixpos (w, search_point, pixpos); | |
| 8333 w->line_cache_validation_override--; | |
| 8334 return retval; | |
| 8335 } | |
| 8336 } | |
| 8337 | |
| 8338 /* This is used to speed up vertical scrolling by caching the known | |
| 8339 buffer starting positions for display lines. This allows the | |
| 8340 scrolling routines to avoid costly calls to regenerate_window. If | |
| 8341 NO_REGEN is true then it will only add the values in the DESIRED | |
| 8342 display structs which are in the given range. | |
| 8343 | |
| 8344 Note also that the FROM/TO values are minimums. It is possible | |
| 8345 that this function will actually add information outside of the | |
| 8346 lines containing those positions. This can't hurt but it could | |
| 8347 possibly help. | |
| 8348 | |
| 8349 #### We currently force the cache to have only 1 contiguous region. | |
| 8350 It might help to make the cache a dynarr of caches so that we can | |
| 8351 cover more areas. This might, however, turn out to be a lot of | |
| 8352 overhead for too little gain. */ | |
| 8353 | |
| 8354 static void | |
| 665 | 8355 update_line_start_cache (struct window *w, Charbpos from, Charbpos to, |
| 8356 Charbpos point, int no_regen) | |
| 428 | 8357 { |
| 8358 struct buffer *b = XBUFFER (w->buffer); | |
| 8359 line_start_cache_dynarr *cache = w->line_start_cache; | |
| 665 | 8360 Charbpos low_bound, high_bound; |
| 428 | 8361 |
| 8362 validate_line_start_cache (w); | |
| 8363 w->line_cache_validation_override++; | |
| 8364 | |
| 8365 if (from < BUF_BEGV (b)) | |
| 8366 from = BUF_BEGV (b); | |
| 8367 if (to > BUF_ZV (b)) | |
| 8368 to = BUF_ZV (b); | |
| 8369 | |
| 8370 if (from > to) | |
| 8371 { | |
| 8372 w->line_cache_validation_override--; | |
| 8373 return; | |
| 8374 } | |
| 8375 | |
| 8376 if (Dynarr_length (cache)) | |
| 8377 { | |
| 8378 low_bound = line_start_cache_start (w); | |
| 8379 high_bound = line_start_cache_end (w); | |
| 8380 | |
| 8381 /* Check to see if the desired range is already in the cache. */ | |
| 8382 if (from >= low_bound && to <= high_bound) | |
| 8383 { | |
| 8384 w->line_cache_validation_override--; | |
| 8385 return; | |
| 8386 } | |
| 8387 | |
| 8388 /* Check to make sure that the desired range is adjacent to the | |
| 8389 current cache. If not, invalidate the cache. */ | |
| 8390 if (to < low_bound || from > high_bound) | |
| 8391 { | |
| 8392 Dynarr_reset (cache); | |
| 8393 low_bound = high_bound = -1; | |
| 8394 } | |
| 8395 } | |
| 8396 else | |
| 8397 { | |
| 8398 low_bound = high_bound = -1; | |
| 8399 } | |
| 8400 | |
| 8401 w->line_cache_last_updated = make_int (BUF_MODIFF (b)); | |
| 8402 | |
| 8403 /* This could be integrated into the next two sections, but it is easier | |
| 8404 to follow what's going on by having it separate. */ | |
| 8405 if (no_regen) | |
| 8406 { | |
| 665 | 8407 Charbpos start, end; |
| 428 | 8408 |
| 8409 update_internal_cache_list (w, DESIRED_DISP); | |
| 8410 if (!Dynarr_length (internal_cache)) | |
| 8411 { | |
| 8412 w->line_cache_validation_override--; | |
| 8413 return; | |
| 8414 } | |
| 8415 | |
|
4844
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Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
8416 start = Dynarr_begin (internal_cache)->start; |
|
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
8417 end = Dynarr_lastp (internal_cache)->end; |
| 428 | 8418 |
| 8419 /* We aren't allowed to generate additional information to fill in | |
| 4187 | 8420 gaps, so if the DESIRED structs don't overlap the cache, reset the |
| 8421 cache. */ | |
| 428 | 8422 if (Dynarr_length (cache)) |
| 8423 { | |
| 8424 if (end < low_bound || start > high_bound) | |
| 8425 Dynarr_reset (cache); | |
| 8426 | |
| 8427 /* #### What should really happen if what we are doing is | |
| 4187 | 8428 extending a line (the last line)? */ |
| 428 | 8429 if (Dynarr_length (cache) == 1 |
| 8430 && Dynarr_length (internal_cache) == 1) | |
| 8431 Dynarr_reset (cache); | |
| 8432 } | |
| 8433 | |
| 8434 if (!Dynarr_length (cache)) | |
| 8435 { | |
| 4967 | 8436 Dynarr_add_many (cache, Dynarr_begin (internal_cache), |
| 428 | 8437 Dynarr_length (internal_cache)); |
| 8438 w->line_cache_validation_override--; | |
| 8439 return; | |
| 8440 } | |
| 8441 | |
| 8442 /* An extra check just in case the calling function didn't pass in | |
| 4187 | 8443 the bounds of the DESIRED structs in the first place. */ |
| 428 | 8444 if (start >= low_bound && end <= high_bound) |
| 8445 { | |
| 8446 w->line_cache_validation_override--; | |
| 8447 return; | |
| 8448 } | |
| 8449 | |
| 8450 /* At this point we know that the internal cache partially overlaps | |
| 4187 | 8451 the main cache. */ |
| 428 | 8452 if (start < low_bound) |
| 8453 { | |
| 8454 int ic_elt = Dynarr_length (internal_cache) - 1; | |
| 8455 while (ic_elt >= 0) | |
| 8456 { | |
| 8457 if (Dynarr_atp (internal_cache, ic_elt)->start < low_bound) | |
| 8458 break; | |
| 8459 else | |
| 8460 ic_elt--; | |
| 8461 } | |
| 8462 | |
| 8463 if (!(ic_elt >= 0)) | |
| 8464 { | |
| 8465 Dynarr_reset (cache); | |
| 4967 | 8466 Dynarr_add_many (cache, Dynarr_begin (internal_cache), |
| 428 | 8467 Dynarr_length (internal_cache)); |
| 8468 w->line_cache_validation_override--; | |
| 8469 return; | |
| 8470 } | |
| 8471 | |
| 4967 | 8472 Dynarr_insert_many_at_start (cache, Dynarr_begin (internal_cache), |
| 428 | 8473 ic_elt + 1); |
| 8474 } | |
| 8475 | |
| 8476 if (end > high_bound) | |
| 8477 { | |
| 8478 int ic_elt = 0; | |
| 8479 | |
| 8480 while (ic_elt < Dynarr_length (internal_cache)) | |
| 8481 { | |
| 8482 if (Dynarr_atp (internal_cache, ic_elt)->start > high_bound) | |
| 8483 break; | |
| 8484 else | |
| 8485 ic_elt++; | |
| 8486 } | |
| 8487 | |
| 8488 if (!(ic_elt < Dynarr_length (internal_cache))) | |
| 8489 { | |
| 8490 Dynarr_reset (cache); | |
| 4967 | 8491 Dynarr_add_many (cache, Dynarr_begin (internal_cache), |
| 428 | 8492 Dynarr_length (internal_cache)); |
| 8493 w->line_cache_validation_override--; | |
| 8494 return; | |
| 8495 } | |
| 8496 | |
| 8497 Dynarr_add_many (cache, Dynarr_atp (internal_cache, ic_elt), | |
| 8498 Dynarr_length (internal_cache) - ic_elt); | |
| 8499 } | |
| 8500 | |
| 8501 w->line_cache_validation_override--; | |
| 8502 return; | |
| 8503 } | |
| 8504 | |
| 8505 if (!Dynarr_length (cache) || from < low_bound) | |
| 8506 { | |
| 665 | 8507 Charbpos startp = find_next_newline_no_quit (b, from, -1); |
| 428 | 8508 int marker = 0; |
| 8509 int old_lb = low_bound; | |
| 8510 | |
| 8511 while (startp < old_lb || low_bound == -1) | |
| 8512 { | |
| 8513 int ic_elt; | |
| 4187 | 8514 Charbpos new_startp; |
| 428 | 8515 |
| 8516 regenerate_window (w, startp, point, CMOTION_DISP); | |
| 8517 update_internal_cache_list (w, CMOTION_DISP); | |
| 8518 | |
| 8519 /* If this assert is triggered then regenerate_window failed | |
| 4187 | 8520 to layout a single line. This is not possible since we |
| 442 | 8521 force at least a single line to be layout for CMOTION_DISP */ |
| 8522 assert (Dynarr_length (internal_cache)); | |
| 4967 | 8523 assert (startp == Dynarr_begin (internal_cache)->start); |
| 428 | 8524 |
| 8525 ic_elt = Dynarr_length (internal_cache) - 1; | |
| 8526 if (low_bound != -1) | |
| 8527 { | |
| 8528 while (ic_elt >= 0) | |
| 8529 { | |
| 8530 if (Dynarr_atp (internal_cache, ic_elt)->start < old_lb) | |
| 8531 break; | |
| 8532 else | |
| 8533 ic_elt--; | |
| 8534 } | |
| 8535 } | |
| 8536 assert (ic_elt >= 0); | |
| 8537 | |
| 8538 new_startp = Dynarr_atp (internal_cache, ic_elt)->end + 1; | |
| 8539 | |
| 4187 | 8540 /* |
| 8541 * Handle invisible text properly: | |
| 8542 * If the last line we're inserting has the same end as the | |
| 8543 * line before which it will be added, merge the two lines. | |
| 8544 */ | |
| 8545 if (Dynarr_length (cache) && | |
| 8546 Dynarr_atp (internal_cache, ic_elt)->end == | |
| 8547 Dynarr_atp (cache, marker)->end) | |
| 8548 { | |
| 8549 Dynarr_atp (cache, marker)->start | |
| 8550 = Dynarr_atp (internal_cache, ic_elt)->start; | |
| 8551 Dynarr_atp (cache, marker)->height | |
| 8552 = Dynarr_atp (internal_cache, ic_elt)->height; | |
| 8553 ic_elt--; | |
| 8554 } | |
| 8555 | |
| 8556 if (ic_elt >= 0) /* we still have lines to add.. */ | |
| 8557 { | |
| 4967 | 8558 Dynarr_insert_many (cache, Dynarr_begin (internal_cache), |
| 4187 | 8559 ic_elt + 1, marker); |
| 8560 marker += (ic_elt + 1); | |
| 8561 } | |
| 428 | 8562 |
| 8563 if (startp < low_bound || low_bound == -1) | |
| 8564 low_bound = startp; | |
| 8565 startp = new_startp; | |
| 8566 if (startp > BUF_ZV (b)) | |
| 8567 { | |
| 8568 w->line_cache_validation_override--; | |
| 8569 return; | |
| 8570 } | |
| 8571 } | |
| 8572 } | |
| 8573 | |
| 8574 assert (Dynarr_length (cache)); | |
| 8575 assert (from >= low_bound); | |
| 8576 | |
| 8577 /* Readjust the high_bound to account for any changes made while | |
| 8578 correcting the low_bound. */ | |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
8579 high_bound = Dynarr_lastp (cache)->end; |
| 428 | 8580 |
| 8581 if (to > high_bound) | |
| 8582 { | |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
8583 Charbpos startp = Dynarr_lastp (cache)->end + 1; |
| 428 | 8584 |
| 8585 do | |
| 8586 { | |
| 8587 regenerate_window (w, startp, point, CMOTION_DISP); | |
| 8588 update_internal_cache_list (w, CMOTION_DISP); | |
| 8589 | |
| 8590 /* See comment above about regenerate_window failing. */ | |
| 8591 assert (Dynarr_length (internal_cache)); | |
| 8592 | |
| 4967 | 8593 Dynarr_add_many (cache, Dynarr_begin (internal_cache), |
| 428 | 8594 Dynarr_length (internal_cache)); |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
8595 high_bound = Dynarr_lastp (cache)->end; |
| 428 | 8596 startp = high_bound + 1; |
| 8597 } | |
| 8598 while (to > high_bound); | |
| 8599 } | |
| 8600 | |
| 8601 w->line_cache_validation_override--; | |
| 8602 assert (to <= high_bound); | |
| 8603 } | |
| 8604 | |
| 8605 | |
| 8606 /* Given x and y coordinates in characters, relative to a window, | |
| 8607 return the pixel location corresponding to those coordinates. The | |
| 8608 pixel location returned is the center of the given character | |
| 8609 position. The pixel values are generated relative to the window, | |
| 8610 not the frame. | |
| 8611 | |
| 8612 The modeline is considered to be part of the window. */ | |
| 8613 | |
| 8614 void | |
| 8615 glyph_to_pixel_translation (struct window *w, int char_x, int char_y, | |
| 8616 int *pix_x, int *pix_y) | |
| 8617 { | |
| 8618 display_line_dynarr *dla = window_display_lines (w, CURRENT_DISP); | |
| 8619 int num_disp_lines, modeline; | |
| 8620 Lisp_Object window; | |
| 8621 int defheight, defwidth; | |
| 8622 | |
| 793 | 8623 window = wrap_window (w); |
|
5047
07dcc7000bbf
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Ben Wing <ben@xemacs.org>
parents:
5043
diff
changeset
|
8624 default_face_width_and_height (window, &defwidth, &defheight); |
| 428 | 8625 |
| 8626 /* If we get a bogus value indicating somewhere above or to the left of | |
| 8627 the window, use the first window line or character position | |
| 8628 instead. */ | |
| 8629 if (char_y < 0) | |
| 8630 char_y = 0; | |
| 8631 if (char_x < 0) | |
| 8632 char_x = 0; | |
| 8633 | |
| 8634 num_disp_lines = Dynarr_length (dla); | |
| 8635 modeline = 0; | |
| 8636 if (num_disp_lines) | |
| 8637 { | |
| 4967 | 8638 if (Dynarr_begin (dla)->modeline) |
| 428 | 8639 { |
| 8640 num_disp_lines--; | |
| 8641 modeline = 1; | |
| 8642 } | |
| 8643 } | |
| 8644 | |
| 8645 /* First check if the y position intersects the display lines. */ | |
| 8646 if (char_y < num_disp_lines) | |
| 8647 { | |
| 8648 struct display_line *dl = Dynarr_atp (dla, char_y + modeline); | |
| 8649 struct display_block *db = get_display_block_from_line (dl, TEXT); | |
| 8650 | |
| 8651 *pix_y = (dl->ypos - dl->ascent + | |
| 647 | 8652 ((dl->ascent + dl->descent - dl->clip) >> 1)); |
| 428 | 8653 |
| 8654 if (char_x < Dynarr_length (db->runes)) | |
| 8655 { | |
| 8656 struct rune *rb = Dynarr_atp (db->runes, char_x); | |
| 8657 | |
| 8658 *pix_x = rb->xpos + (rb->width >> 1); | |
| 8659 } | |
| 8660 else | |
| 8661 { | |
| 8662 int last_rune = Dynarr_length (db->runes) - 1; | |
| 8663 struct rune *rb = Dynarr_atp (db->runes, last_rune); | |
| 8664 | |
| 8665 char_x -= last_rune; | |
| 8666 | |
| 8667 *pix_x = rb->xpos + rb->width; | |
| 8668 *pix_x += ((char_x - 1) * defwidth); | |
| 8669 *pix_x += (defwidth >> 1); | |
| 8670 } | |
| 8671 } | |
| 8672 else | |
| 8673 { | |
| 8674 /* It didn't intersect, so extrapolate. #### For now, we include the | |
| 8675 modeline in this since we don't have true character positions in | |
| 8676 it. */ | |
| 8677 | |
| 8678 if (!Dynarr_length (w->face_cachels)) | |
| 8679 reset_face_cachels (w); | |
| 8680 | |
| 8681 char_y -= num_disp_lines; | |
| 8682 | |
| 8683 if (Dynarr_length (dla)) | |
| 8684 { | |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
8685 struct display_line *dl = Dynarr_lastp (dla); |
| 428 | 8686 *pix_y = dl->ypos + dl->descent - dl->clip; |
| 8687 } | |
| 8688 else | |
| 8689 *pix_y = WINDOW_TEXT_TOP (w); | |
| 8690 | |
| 8691 *pix_y += (char_y * defheight); | |
| 8692 *pix_y += (defheight >> 1); | |
| 8693 | |
| 8694 *pix_x = WINDOW_TEXT_LEFT (w); | |
| 8695 /* Don't adjust by one because this is still the unadjusted value. */ | |
| 8696 *pix_x += (char_x * defwidth); | |
| 8697 *pix_x += (defwidth >> 1); | |
| 8698 } | |
| 8699 | |
| 8700 if (*pix_x > w->pixel_left + w->pixel_width) | |
| 8701 *pix_x = w->pixel_left + w->pixel_width; | |
| 8702 if (*pix_y > w->pixel_top + w->pixel_height) | |
| 8703 *pix_y = w->pixel_top + w->pixel_height; | |
| 8704 | |
| 8705 *pix_x -= w->pixel_left; | |
| 8706 *pix_y -= w->pixel_top; | |
| 8707 } | |
| 8708 | |
| 8709 /* Given a display line and a position, determine if there is a glyph | |
| 8710 there and return information about it if there is. */ | |
| 8711 | |
| 8712 static void | |
| 8713 get_position_object (struct display_line *dl, Lisp_Object *obj1, | |
| 8714 Lisp_Object *obj2, int x_coord, int *low_x_coord, | |
| 8715 int *high_x_coord) | |
| 8716 { | |
| 8717 struct display_block *db; | |
| 8718 int elt; | |
| 8719 int block = | |
| 8720 get_next_display_block (dl->bounds, dl->display_blocks, x_coord, 0); | |
| 8721 | |
| 8722 /* We use get_next_display_block to get the actual display block | |
| 8723 that would be displayed at x_coord. */ | |
| 8724 | |
| 8725 if (block == NO_BLOCK) | |
| 8726 return; | |
| 8727 else | |
| 8728 db = Dynarr_atp (dl->display_blocks, block); | |
| 8729 | |
| 8730 for (elt = 0; elt < Dynarr_length (db->runes); elt++) | |
| 8731 { | |
| 8732 struct rune *rb = Dynarr_atp (db->runes, elt); | |
| 8733 | |
| 8734 if (rb->xpos <= x_coord && x_coord < (rb->xpos + rb->width)) | |
| 8735 { | |
| 8736 if (rb->type == RUNE_DGLYPH) | |
| 8737 { | |
| 8738 *obj1 = rb->object.dglyph.glyph; | |
| 8739 *obj2 = rb->object.dglyph.extent; | |
| 8740 } | |
| 8741 else | |
| 8742 { | |
| 8743 *obj1 = Qnil; | |
| 8744 *obj2 = Qnil; | |
| 8745 } | |
| 8746 | |
| 8747 if (low_x_coord) | |
| 8748 *low_x_coord = rb->xpos; | |
| 8749 if (high_x_coord) | |
| 8750 *high_x_coord = rb->xpos + rb->width; | |
| 8751 | |
| 8752 return; | |
| 8753 } | |
| 8754 } | |
| 8755 } | |
| 8756 | |
| 8757 #define UPDATE_CACHE_RETURN \ | |
| 8758 do { \ | |
| 8759 d->pixel_to_glyph_cache.valid = 1; \ | |
| 8760 d->pixel_to_glyph_cache.low_x_coord = low_x_coord; \ | |
| 8761 d->pixel_to_glyph_cache.high_x_coord = high_x_coord; \ | |
| 8762 d->pixel_to_glyph_cache.low_y_coord = low_y_coord; \ | |
| 8763 d->pixel_to_glyph_cache.high_y_coord = high_y_coord; \ | |
| 8764 d->pixel_to_glyph_cache.frame = f; \ | |
| 8765 d->pixel_to_glyph_cache.col = *col; \ | |
| 8766 d->pixel_to_glyph_cache.row = *row; \ | |
| 8767 d->pixel_to_glyph_cache.obj_x = *obj_x; \ | |
| 8768 d->pixel_to_glyph_cache.obj_y = *obj_y; \ | |
| 8769 d->pixel_to_glyph_cache.w = *w; \ | |
| 826 | 8770 d->pixel_to_glyph_cache.charpos = *charpos; \ |
| 428 | 8771 d->pixel_to_glyph_cache.closest = *closest; \ |
| 8772 d->pixel_to_glyph_cache.modeline_closest = *modeline_closest; \ | |
| 8773 d->pixel_to_glyph_cache.obj1 = *obj1; \ | |
| 8774 d->pixel_to_glyph_cache.obj2 = *obj2; \ | |
| 8775 d->pixel_to_glyph_cache.retval = position; \ | |
| 8776 RETURN_SANS_WARNINGS position; \ | |
| 8777 } while (0) | |
| 8778 | |
| 8779 /* Given x and y coordinates in pixels relative to a frame, return | |
| 8780 information about what is located under those coordinates. | |
| 8781 | |
| 8782 The return value will be one of: | |
| 8783 | |
| 8784 OVER_TOOLBAR: over one of the 4 frame toolbars | |
| 8785 OVER_MODELINE: over a modeline | |
| 8786 OVER_BORDER: over an internal border | |
| 8787 OVER_NOTHING: over the text area, but not over text | |
| 8788 OVER_OUTSIDE: outside of the frame border | |
| 8789 OVER_TEXT: over text in the text area | |
| 8790 | |
| 8791 OBJ1 is one of | |
| 8792 | |
| 8793 -- a toolbar button | |
| 8794 -- a glyph | |
| 8795 -- nil if the coordinates are not over a glyph or a toolbar button. | |
| 8796 | |
| 8797 OBJ2 is one of | |
| 8798 | |
| 8799 -- an extent, if the coordinates are over a glyph in the text area | |
| 8800 -- nil otherwise. | |
| 8801 | |
| 8802 If the coordinates are over a glyph, OBJ_X and OBJ_Y give the | |
| 8803 equivalent coordinates relative to the upper-left corner of the glyph. | |
| 8804 | |
| 8805 If the coordinates are over a character, OBJ_X and OBJ_Y give the | |
| 8806 equivalent coordinates relative to the upper-left corner of the character. | |
| 8807 | |
| 8808 Otherwise, OBJ_X and OBJ_Y are undefined. | |
| 8809 */ | |
| 8810 | |
| 8811 int | |
| 8812 pixel_to_glyph_translation (struct frame *f, int x_coord, int y_coord, | |
| 8813 int *col, int *row, int *obj_x, int *obj_y, | |
| 826 | 8814 struct window **w, Charbpos *charpos, |
| 665 | 8815 Charbpos *closest, Charcount *modeline_closest, |
| 428 | 8816 Lisp_Object *obj1, Lisp_Object *obj2) |
| 8817 { | |
| 8818 struct device *d; | |
| 8819 struct pixel_to_glyph_translation_cache *cache; | |
| 8820 Lisp_Object window; | |
| 8821 int frm_left, frm_right, frm_top, frm_bottom; | |
| 8822 int low_x_coord, high_x_coord, low_y_coord, high_y_coord; | |
| 8823 int position = OVER_NOTHING; | |
| 8824 int device_check_failed = 0; | |
| 8825 display_line_dynarr *dla; | |
| 8826 | |
| 8827 /* This is a safety valve in case this got called with a frame in | |
| 8828 the middle of being deleted. */ | |
| 8829 if (!DEVICEP (f->device) || !DEVICE_LIVE_P (XDEVICE (f->device))) | |
| 8830 { | |
| 8831 device_check_failed = 1; | |
| 8832 d = NULL, cache = NULL; /* Warning suppression */ | |
| 8833 } | |
| 8834 else | |
| 8835 { | |
| 8836 d = XDEVICE (f->device); | |
| 8837 cache = &d->pixel_to_glyph_cache; | |
| 8838 } | |
| 8839 | |
| 8840 if (!device_check_failed | |
| 8841 && cache->valid | |
| 8842 && cache->frame == f | |
| 8843 && cache->low_x_coord <= x_coord | |
| 8844 && cache->high_x_coord > x_coord | |
| 8845 && cache->low_y_coord <= y_coord | |
| 8846 && cache->high_y_coord > y_coord) | |
| 8847 { | |
| 8848 *col = cache->col; | |
| 8849 *row = cache->row; | |
| 8850 *obj_x = cache->obj_x; | |
| 8851 *obj_y = cache->obj_y; | |
| 8852 *w = cache->w; | |
| 826 | 8853 *charpos = cache->charpos; |
| 428 | 8854 *closest = cache->closest; |
| 8855 *modeline_closest = cache->modeline_closest; | |
| 8856 *obj1 = cache->obj1; | |
| 8857 *obj2 = cache->obj2; | |
| 8858 | |
| 8859 return cache->retval; | |
| 8860 } | |
| 8861 else | |
| 8862 { | |
| 8863 *col = 0; | |
| 8864 *row = 0; | |
| 8865 *obj_x = 0; | |
| 8866 *obj_y = 0; | |
| 8867 *w = 0; | |
| 826 | 8868 *charpos = 0; |
| 428 | 8869 *closest = 0; |
| 8870 *modeline_closest = -1; | |
| 8871 *obj1 = Qnil; | |
| 8872 *obj2 = Qnil; | |
| 8873 | |
| 8874 low_x_coord = x_coord; | |
| 8875 high_x_coord = x_coord + 1; | |
| 8876 low_y_coord = y_coord; | |
| 8877 high_y_coord = y_coord + 1; | |
| 8878 } | |
| 8879 | |
| 8880 if (device_check_failed) | |
| 8881 return OVER_NOTHING; | |
| 8882 | |
| 8883 frm_left = FRAME_LEFT_BORDER_END (f); | |
| 8884 frm_right = FRAME_RIGHT_BORDER_START (f); | |
| 8885 frm_top = FRAME_TOP_BORDER_END (f); | |
| 8886 frm_bottom = FRAME_BOTTOM_BORDER_START (f); | |
| 8887 | |
| 8888 /* Check if the mouse is outside of the text area actually used by | |
| 8889 redisplay. */ | |
| 8890 if (y_coord < frm_top) | |
| 8891 { | |
| 8892 if (y_coord >= FRAME_TOP_BORDER_START (f)) | |
| 8893 { | |
| 8894 low_y_coord = FRAME_TOP_BORDER_START (f); | |
| 8895 high_y_coord = frm_top; | |
| 8896 position = OVER_BORDER; | |
| 8897 } | |
| 8898 else if (y_coord >= 0) | |
| 8899 { | |
| 8900 low_y_coord = 0; | |
| 8901 high_y_coord = FRAME_TOP_BORDER_START (f); | |
| 8902 position = OVER_TOOLBAR; | |
| 8903 } | |
| 8904 else | |
| 8905 { | |
| 8906 low_y_coord = y_coord; | |
| 8907 high_y_coord = 0; | |
| 8908 position = OVER_OUTSIDE; | |
| 8909 } | |
| 8910 } | |
| 8911 else if (y_coord >= frm_bottom) | |
| 8912 { | |
| 8913 if (y_coord < FRAME_BOTTOM_BORDER_END (f)) | |
| 8914 { | |
| 8915 low_y_coord = frm_bottom; | |
| 8916 high_y_coord = FRAME_BOTTOM_BORDER_END (f); | |
| 8917 position = OVER_BORDER; | |
| 8918 } | |
| 8919 else if (y_coord < FRAME_PIXHEIGHT (f)) | |
| 8920 { | |
| 8921 low_y_coord = FRAME_BOTTOM_BORDER_END (f); | |
| 8922 high_y_coord = FRAME_PIXHEIGHT (f); | |
| 8923 position = OVER_TOOLBAR; | |
| 8924 } | |
| 8925 else | |
| 8926 { | |
| 8927 low_y_coord = FRAME_PIXHEIGHT (f); | |
| 8928 high_y_coord = y_coord; | |
| 8929 position = OVER_OUTSIDE; | |
| 8930 } | |
| 8931 } | |
| 8932 | |
| 8933 if (position != OVER_TOOLBAR && position != OVER_BORDER) | |
| 8934 { | |
| 8935 if (x_coord < frm_left) | |
| 8936 { | |
| 8937 if (x_coord >= FRAME_LEFT_BORDER_START (f)) | |
| 8938 { | |
| 8939 low_x_coord = FRAME_LEFT_BORDER_START (f); | |
| 8940 high_x_coord = frm_left; | |
| 8941 position = OVER_BORDER; | |
| 8942 } | |
| 8943 else if (x_coord >= 0) | |
| 8944 { | |
| 8945 low_x_coord = 0; | |
| 8946 high_x_coord = FRAME_LEFT_BORDER_START (f); | |
| 8947 position = OVER_TOOLBAR; | |
| 8948 } | |
| 8949 else | |
| 8950 { | |
| 8951 low_x_coord = x_coord; | |
| 8952 high_x_coord = 0; | |
| 8953 position = OVER_OUTSIDE; | |
| 8954 } | |
| 8955 } | |
| 8956 else if (x_coord >= frm_right) | |
| 8957 { | |
| 8958 if (x_coord < FRAME_RIGHT_BORDER_END (f)) | |
| 8959 { | |
| 8960 low_x_coord = frm_right; | |
| 8961 high_x_coord = FRAME_RIGHT_BORDER_END (f); | |
| 8962 position = OVER_BORDER; | |
| 8963 } | |
| 8964 else if (x_coord < FRAME_PIXWIDTH (f)) | |
| 8965 { | |
| 8966 low_x_coord = FRAME_RIGHT_BORDER_END (f); | |
| 8967 high_x_coord = FRAME_PIXWIDTH (f); | |
| 8968 position = OVER_TOOLBAR; | |
| 8969 } | |
| 8970 else | |
| 8971 { | |
| 8972 low_x_coord = FRAME_PIXWIDTH (f); | |
| 8973 high_x_coord = x_coord; | |
| 8974 position = OVER_OUTSIDE; | |
| 8975 } | |
| 8976 } | |
| 8977 } | |
| 8978 | |
| 8979 #ifdef HAVE_TOOLBARS | |
| 8980 if (position == OVER_TOOLBAR) | |
| 8981 { | |
| 8982 *obj1 = toolbar_button_at_pixpos (f, x_coord, y_coord); | |
| 8983 *obj2 = Qnil; | |
| 8984 *w = 0; | |
| 8985 UPDATE_CACHE_RETURN; | |
| 8986 } | |
| 8987 #endif /* HAVE_TOOLBARS */ | |
| 8988 | |
| 8989 /* We still have to return the window the pointer is next to and its | |
| 8990 relative y position even if it is outside the x boundary. */ | |
| 8991 if (x_coord < frm_left) | |
| 8992 x_coord = frm_left; | |
| 8993 else if (x_coord > frm_right) | |
| 8994 x_coord = frm_right; | |
| 8995 | |
| 8996 /* Same in reverse. */ | |
| 8997 if (y_coord < frm_top) | |
| 8998 y_coord = frm_top; | |
| 8999 else if (y_coord > frm_bottom) | |
| 9000 y_coord = frm_bottom; | |
| 9001 | |
| 9002 /* Find what window the given coordinates are actually in. */ | |
| 9003 window = f->root_window; | |
| 9004 *w = find_window_by_pixel_pos (x_coord, y_coord, window); | |
| 9005 | |
| 9006 /* If we didn't find a window, we're done. */ | |
| 9007 if (!*w) | |
| 9008 { | |
| 9009 UPDATE_CACHE_RETURN; | |
| 9010 } | |
| 9011 else if (position != OVER_NOTHING) | |
| 9012 { | |
| 9013 *closest = 0; | |
| 9014 *modeline_closest = -1; | |
| 9015 | |
| 9016 if (high_y_coord <= frm_top || high_y_coord >= frm_bottom) | |
| 9017 { | |
| 9018 *w = 0; | |
| 9019 UPDATE_CACHE_RETURN; | |
| 9020 } | |
| 9021 } | |
| 9022 | |
| 9023 /* Check if the window is a minibuffer but isn't active. */ | |
| 9024 if (MINI_WINDOW_P (*w) && !minibuf_level) | |
| 9025 { | |
| 9026 /* Must reset the window value since some callers will ignore | |
| 4187 | 9027 the return value if it is set. */ |
| 428 | 9028 *w = 0; |
| 9029 UPDATE_CACHE_RETURN; | |
| 9030 } | |
| 9031 | |
| 9032 /* See if the point is over window vertical divider */ | |
| 9033 if (window_needs_vertical_divider (*w)) | |
| 9034 { | |
| 9035 int div_x_high = WINDOW_RIGHT (*w); | |
| 9036 int div_x_low = div_x_high - window_divider_width (*w); | |
| 9037 int div_y_high = WINDOW_BOTTOM (*w); | |
| 9038 int div_y_low = WINDOW_TOP (*w); | |
| 9039 | |
| 9040 if (div_x_low < x_coord && x_coord <= div_x_high && | |
| 9041 div_y_low < y_coord && y_coord <= div_y_high) | |
| 9042 { | |
| 9043 low_x_coord = div_x_low; | |
| 9044 high_x_coord = div_x_high; | |
| 9045 low_y_coord = div_y_low; | |
| 9046 high_y_coord = div_y_high; | |
| 9047 position = OVER_V_DIVIDER; | |
| 9048 UPDATE_CACHE_RETURN; | |
| 9049 } | |
| 9050 } | |
| 9051 | |
| 9052 dla = window_display_lines (*w, CURRENT_DISP); | |
| 9053 | |
| 9054 for (*row = 0; *row < Dynarr_length (dla); (*row)++) | |
| 9055 { | |
| 9056 int really_over_nothing = 0; | |
| 9057 struct display_line *dl = Dynarr_atp (dla, *row); | |
| 9058 | |
| 9059 if ((int) (dl->ypos - dl->ascent) <= y_coord | |
| 9060 && y_coord <= (int) (dl->ypos + dl->descent)) | |
| 9061 { | |
| 9062 int check_margin_glyphs = 0; | |
| 9063 struct display_block *db = get_display_block_from_line (dl, TEXT); | |
| 9064 struct rune *rb = 0; | |
| 9065 | |
| 9066 if (x_coord < dl->bounds.left_white | |
| 9067 || x_coord >= dl->bounds.right_white) | |
| 9068 check_margin_glyphs = 1; | |
| 9069 | |
| 9070 low_y_coord = dl->ypos - dl->ascent; | |
| 9071 high_y_coord = dl->ypos + dl->descent + 1; | |
| 9072 | |
| 9073 if (position == OVER_BORDER | |
| 9074 || position == OVER_OUTSIDE | |
| 9075 || check_margin_glyphs) | |
| 9076 { | |
| 9077 int x_check, left_bound; | |
| 9078 | |
| 9079 if (check_margin_glyphs) | |
| 9080 { | |
| 9081 x_check = x_coord; | |
| 9082 left_bound = dl->bounds.left_white; | |
| 9083 } | |
| 9084 else | |
| 9085 { | |
| 9086 x_check = high_x_coord; | |
| 9087 left_bound = frm_left; | |
| 9088 } | |
| 9089 | |
| 9090 if (Dynarr_length (db->runes)) | |
| 9091 { | |
| 9092 if (x_check <= left_bound) | |
| 9093 { | |
| 9094 if (dl->modeline) | |
| 4967 | 9095 *modeline_closest = Dynarr_begin (db->runes)->charpos; |
| 428 | 9096 else |
| 4967 | 9097 *closest = Dynarr_begin (db->runes)->charpos; |
| 428 | 9098 } |
| 9099 else | |
| 9100 { | |
| 9101 if (dl->modeline) | |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
9102 *modeline_closest = Dynarr_lastp (db->runes)->charpos; |
| 428 | 9103 else |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4815
diff
changeset
|
9104 *closest = Dynarr_lastp (db->runes)->charpos; |
| 428 | 9105 } |
| 9106 | |
| 9107 if (dl->modeline) | |
| 9108 *modeline_closest += dl->offset; | |
| 9109 else | |
| 9110 *closest += dl->offset; | |
| 9111 } | |
| 9112 else | |
| 9113 { | |
| 9114 /* #### What should be here. */ | |
| 9115 if (dl->modeline) | |
| 9116 *modeline_closest = 0; | |
| 9117 else | |
| 9118 *closest = 0; | |
| 9119 } | |
| 9120 | |
| 9121 if (check_margin_glyphs) | |
| 9122 { | |
| 9123 if (x_coord < dl->bounds.left_in | |
| 9124 || x_coord >= dl->bounds.right_in) | |
| 9125 { | |
| 9126 /* If we are over the outside margins then we | |
| 4187 | 9127 know the loop over the text block isn't going |
| 9128 to accomplish anything. So we go ahead and | |
| 9129 set what information we can right here and | |
| 9130 return. */ | |
| 428 | 9131 (*row)--; |
| 9132 *obj_y = y_coord - (dl->ypos - dl->ascent); | |
| 9133 get_position_object (dl, obj1, obj2, x_coord, | |
| 9134 &low_x_coord, &high_x_coord); | |
| 9135 | |
| 9136 UPDATE_CACHE_RETURN; | |
| 9137 } | |
| 9138 } | |
| 9139 else | |
| 9140 UPDATE_CACHE_RETURN; | |
| 9141 } | |
| 9142 | |
| 9143 for (*col = 0; *col <= Dynarr_length (db->runes); (*col)++) | |
| 9144 { | |
| 9145 int past_end = (*col == Dynarr_length (db->runes)); | |
| 9146 | |
| 9147 if (!past_end) | |
| 9148 rb = Dynarr_atp (db->runes, *col); | |
| 9149 | |
| 9150 if (past_end || | |
| 9151 (rb->xpos <= x_coord && x_coord < rb->xpos + rb->width)) | |
| 9152 { | |
| 9153 if (past_end) | |
| 9154 { | |
| 9155 (*col)--; | |
| 9156 rb = Dynarr_atp (db->runes, *col); | |
| 9157 } | |
| 9158 | |
| 826 | 9159 *charpos = rb->charpos + dl->offset; |
| 428 | 9160 low_x_coord = rb->xpos; |
| 9161 high_x_coord = rb->xpos + rb->width; | |
| 9162 | |
| 9163 if (rb->type == RUNE_DGLYPH) | |
| 9164 { | |
| 9165 int elt = *col + 1; | |
| 9166 | |
| 9167 /* Find the first character after the glyph. */ | |
| 9168 while (elt < Dynarr_length (db->runes)) | |
| 9169 { | |
| 9170 if (Dynarr_atp (db->runes, elt)->type != RUNE_DGLYPH) | |
| 9171 { | |
| 9172 if (dl->modeline) | |
| 9173 *modeline_closest = | |
| 826 | 9174 (Dynarr_atp (db->runes, elt)->charpos + |
| 428 | 9175 dl->offset); |
| 9176 else | |
| 9177 *closest = | |
| 826 | 9178 (Dynarr_atp (db->runes, elt)->charpos + |
| 428 | 9179 dl->offset); |
| 9180 break; | |
| 9181 } | |
| 9182 | |
| 9183 elt++; | |
| 9184 } | |
| 9185 | |
| 9186 /* In this case we failed to find a non-glyph | |
| 4187 | 9187 character so we return the last position |
| 9188 displayed on the line. */ | |
| 428 | 9189 if (elt == Dynarr_length (db->runes)) |
| 9190 { | |
| 9191 if (dl->modeline) | |
| 826 | 9192 *modeline_closest = dl->end_charpos + dl->offset; |
| 428 | 9193 else |
| 826 | 9194 *closest = dl->end_charpos + dl->offset; |
| 428 | 9195 really_over_nothing = 1; |
| 9196 } | |
| 9197 } | |
| 9198 else | |
| 9199 { | |
| 9200 if (dl->modeline) | |
| 826 | 9201 *modeline_closest = rb->charpos + dl->offset; |
| 428 | 9202 else |
| 826 | 9203 *closest = rb->charpos + dl->offset; |
| 428 | 9204 } |
| 9205 | |
| 9206 if (dl->modeline) | |
| 9207 { | |
| 9208 *row = window_displayed_height (*w); | |
| 9209 | |
| 9210 if (position == OVER_NOTHING) | |
| 9211 position = OVER_MODELINE; | |
| 9212 | |
| 9213 if (rb->type == RUNE_DGLYPH) | |
| 9214 { | |
| 9215 *obj1 = rb->object.dglyph.glyph; | |
| 9216 *obj2 = rb->object.dglyph.extent; | |
| 9217 } | |
| 9218 else if (rb->type == RUNE_CHAR) | |
| 9219 { | |
| 9220 *obj1 = Qnil; | |
| 9221 *obj2 = Qnil; | |
| 9222 } | |
| 9223 else | |
| 9224 { | |
| 9225 *obj1 = Qnil; | |
| 9226 *obj2 = Qnil; | |
| 9227 } | |
| 9228 | |
| 9229 UPDATE_CACHE_RETURN; | |
| 9230 } | |
| 9231 else if (past_end | |
| 9232 || (rb->type == RUNE_CHAR | |
| 9233 && rb->object.chr.ch == '\n')) | |
| 9234 { | |
| 9235 (*row)--; | |
| 9236 /* At this point we may have glyphs in the right | |
| 4187 | 9237 inside margin. */ |
| 428 | 9238 if (check_margin_glyphs) |
| 9239 get_position_object (dl, obj1, obj2, x_coord, | |
| 9240 &low_x_coord, &high_x_coord); | |
| 9241 UPDATE_CACHE_RETURN; | |
| 9242 } | |
| 9243 else | |
| 9244 { | |
| 9245 (*row)--; | |
| 9246 if (rb->type == RUNE_DGLYPH) | |
| 9247 { | |
| 9248 *obj1 = rb->object.dglyph.glyph; | |
| 9249 *obj2 = rb->object.dglyph.extent; | |
| 9250 } | |
| 9251 else if (rb->type == RUNE_CHAR) | |
| 9252 { | |
| 9253 *obj1 = Qnil; | |
| 9254 *obj2 = Qnil; | |
| 9255 } | |
| 9256 else | |
| 9257 { | |
| 9258 *obj1 = Qnil; | |
| 9259 *obj2 = Qnil; | |
| 9260 } | |
| 9261 | |
| 9262 *obj_x = x_coord - rb->xpos; | |
| 9263 *obj_y = y_coord - (dl->ypos - dl->ascent); | |
| 9264 | |
| 9265 /* At this point we may have glyphs in the left | |
| 4187 | 9266 inside margin. */ |
| 428 | 9267 if (check_margin_glyphs) |
| 9268 get_position_object (dl, obj1, obj2, x_coord, 0, 0); | |
| 9269 | |
| 9270 if (position == OVER_NOTHING && !really_over_nothing) | |
| 9271 position = OVER_TEXT; | |
| 9272 | |
| 9273 UPDATE_CACHE_RETURN; | |
| 9274 } | |
| 9275 } | |
| 9276 } | |
| 9277 } | |
| 9278 } | |
| 9279 | |
| 9280 *row = Dynarr_length (dla) - 1; | |
| 9281 if (FRAME_WIN_P (f)) | |
| 9282 { | |
| 9283 int bot_elt = Dynarr_length (dla) - 1; | |
| 9284 | |
| 9285 if (bot_elt >= 0) | |
| 9286 { | |
| 9287 struct display_line *dl = Dynarr_atp (dla, bot_elt); | |
| 9288 int adj_area = y_coord - (dl->ypos + dl->descent); | |
| 9289 Lisp_Object lwin; | |
| 9290 int defheight; | |
| 9291 | |
| 793 | 9292 lwin = wrap_window (*w); |
|
5047
07dcc7000bbf
put width before height consistently, fix a real bug found in the process
Ben Wing <ben@xemacs.org>
parents:
5043
diff
changeset
|
9293 default_face_width_and_height (lwin, 0, &defheight); |
| 428 | 9294 |
| 9295 *row += (adj_area / defheight); | |
| 9296 } | |
| 9297 } | |
| 9298 | |
| 9299 /* #### This should be checked out some more to determine what | |
| 9300 should really be going on. */ | |
| 9301 if (!MARKERP ((*w)->start[CURRENT_DISP])) | |
| 9302 *closest = 0; | |
| 9303 else | |
| 442 | 9304 *closest = end_of_last_line_may_error (*w, |
| 428 | 9305 marker_position ((*w)->start[CURRENT_DISP])); |
| 9306 *col = 0; | |
| 9307 UPDATE_CACHE_RETURN; | |
| 9308 } | |
| 9309 #undef UPDATE_CACHE_RETURN | |
| 9310 | |
| 9311 | |
| 9312 /***************************************************************************/ | |
| 9313 /* */ | |
| 9314 /* Lisp functions */ | |
| 9315 /* */ | |
| 9316 /***************************************************************************/ | |
| 9317 | |
| 9318 DEFUN ("redisplay-echo-area", Fredisplay_echo_area, 0, 0, 0, /* | |
| 9319 Ensure that all minibuffers are correctly showing the echo area. | |
| 9320 */ | |
| 9321 ()) | |
| 9322 { | |
| 9323 Lisp_Object devcons, concons; | |
| 9324 | |
| 1318 | 9325 if (in_display) |
| 9326 return Qnil; | |
| 9327 | |
| 428 | 9328 DEVICE_LOOP_NO_BREAK (devcons, concons) |
| 9329 { | |
| 9330 struct device *d = XDEVICE (XCAR (devcons)); | |
| 9331 Lisp_Object frmcons; | |
| 9332 | |
| 1279 | 9333 if (DEVICE_STREAM_P (d)) |
| 9334 continue; | |
| 9335 | |
| 428 | 9336 DEVICE_FRAME_LOOP (frmcons, d) |
| 9337 { | |
| 9338 struct frame *f = XFRAME (XCAR (frmcons)); | |
| 853 | 9339 int depth; |
| 428 | 9340 |
| 9341 if (FRAME_REPAINT_P (f) && FRAME_HAS_MINIBUF_P (f)) | |
| 9342 { | |
| 9343 Lisp_Object window = FRAME_MINIBUF_WINDOW (f); | |
| 442 | 9344 |
| 9345 MAYBE_DEVMETH (d, frame_output_begin, (f)); | |
| 9346 | |
| 428 | 9347 /* |
| 9348 * If the frame size has changed, there may be random | |
| 9349 * chud on the screen left from previous messages | |
| 9350 * because redisplay_frame hasn't been called yet. | |
| 9351 * Clear the screen to get rid of the potential mess. | |
| 9352 */ | |
| 9353 if (f->echo_area_garbaged) | |
| 9354 { | |
| 442 | 9355 MAYBE_DEVMETH (d, clear_frame, (f)); |
| 428 | 9356 f->echo_area_garbaged = 0; |
| 9357 } | |
| 853 | 9358 depth = enter_redisplay_critical_section (); |
| 428 | 9359 redisplay_window (window, 0); |
| 853 | 9360 exit_redisplay_critical_section (depth); |
| 442 | 9361 MAYBE_DEVMETH (d, frame_output_end, (f)); |
| 428 | 9362 } |
| 9363 } | |
| 9364 } | |
| 9365 | |
| 9366 return Qnil; | |
| 9367 } | |
| 9368 | |
| 9369 DEFUN ("redraw-frame", Fredraw_frame, 0, 2, 0, /* | |
| 9370 Clear frame FRAME and output again what is supposed to appear on it. | |
| 9371 FRAME defaults to the selected frame if omitted. | |
| 9372 Normally, redisplay is preempted as normal if input arrives. However, | |
| 9373 if optional second arg NO-PREEMPT is non-nil, redisplay will not stop for | |
| 9374 input and is guaranteed to proceed to completion. | |
| 9375 */ | |
| 9376 (frame, no_preempt)) | |
| 9377 { | |
| 9378 struct frame *f = decode_frame (frame); | |
| 9379 int count = specpdl_depth (); | |
| 9380 | |
| 9381 if (!NILP (no_preempt)) | |
| 853 | 9382 internal_bind_int (&disable_preemption, 1 + disable_preemption); |
| 428 | 9383 |
| 9384 f->clear = 1; | |
| 9385 redisplay_frame (f, 1); | |
| 9386 | |
| 442 | 9387 /* See the comment in Fredisplay_frame. */ |
| 9388 RESET_CHANGED_SET_FLAGS; | |
| 9389 | |
| 771 | 9390 return unbind_to (count); |
| 428 | 9391 } |
| 9392 | |
| 9393 DEFUN ("redisplay-frame", Fredisplay_frame, 0, 2, 0, /* | |
| 9394 Ensure that FRAME's contents are correctly displayed. | |
| 9395 This differs from `redraw-frame' in that it only redraws what needs to | |
| 9396 be updated, as opposed to unconditionally clearing and redrawing | |
| 9397 the frame. | |
| 9398 FRAME defaults to the selected frame if omitted. | |
| 9399 Normally, redisplay is preempted as normal if input arrives. However, | |
| 9400 if optional second arg NO-PREEMPT is non-nil, redisplay will not stop for | |
| 9401 input and is guaranteed to proceed to completion. | |
| 9402 */ | |
| 9403 (frame, no_preempt)) | |
| 9404 { | |
| 9405 struct frame *f = decode_frame (frame); | |
| 9406 int count = specpdl_depth (); | |
| 9407 | |
| 9408 if (!NILP (no_preempt)) | |
| 853 | 9409 internal_bind_int (&disable_preemption, 1 + disable_preemption); |
| 428 | 9410 |
| 9411 redisplay_frame (f, 1); | |
| 9412 | |
| 442 | 9413 /* If we don't reset the global redisplay flags here, subsequent |
| 9414 changes to the display will not get registered by redisplay | |
| 9415 because it thinks it already has registered changes. If you | |
| 9416 really knew what you were doing you could confuse redisplay by | |
| 9417 calling Fredisplay_frame while updating another frame. We assume | |
| 9418 that if you know what you are doing you will not be that | |
| 9419 stupid. */ | |
| 9420 RESET_CHANGED_SET_FLAGS; | |
| 9421 | |
| 771 | 9422 return unbind_to (count); |
| 428 | 9423 } |
| 9424 | |
| 9425 DEFUN ("redraw-device", Fredraw_device, 0, 2, 0, /* | |
| 9426 Clear device DEVICE and output again what is supposed to appear on it. | |
| 9427 DEVICE defaults to the selected device if omitted. | |
| 9428 Normally, redisplay is preempted as normal if input arrives. However, | |
| 9429 if optional second arg NO-PREEMPT is non-nil, redisplay will not stop for | |
| 9430 input and is guaranteed to proceed to completion. | |
| 9431 */ | |
| 9432 (device, no_preempt)) | |
| 9433 { | |
| 9434 struct device *d = decode_device (device); | |
| 9435 Lisp_Object frmcons; | |
| 9436 int count = specpdl_depth (); | |
| 9437 | |
| 9438 if (!NILP (no_preempt)) | |
| 853 | 9439 internal_bind_int (&disable_preemption, 1 + disable_preemption); |
| 428 | 9440 |
| 9441 DEVICE_FRAME_LOOP (frmcons, d) | |
| 9442 { | |
| 9443 XFRAME (XCAR (frmcons))->clear = 1; | |
| 9444 } | |
| 440 | 9445 redisplay_device (d, 0); |
| 428 | 9446 |
| 442 | 9447 /* See the comment in Fredisplay_frame. */ |
| 9448 RESET_CHANGED_SET_FLAGS; | |
| 9449 | |
| 771 | 9450 return unbind_to (count); |
| 428 | 9451 } |
| 9452 | |
| 9453 DEFUN ("redisplay-device", Fredisplay_device, 0, 2, 0, /* | |
| 9454 Ensure that DEVICE's contents are correctly displayed. | |
| 9455 This differs from `redraw-device' in that it only redraws what needs to | |
| 9456 be updated, as opposed to unconditionally clearing and redrawing | |
| 9457 the device. | |
| 9458 DEVICE defaults to the selected device if omitted. | |
| 9459 Normally, redisplay is preempted as normal if input arrives. However, | |
| 9460 if optional second arg NO-PREEMPT is non-nil, redisplay will not stop for | |
| 9461 input and is guaranteed to proceed to completion. | |
| 853 | 9462 |
| 9463 Note: If you simply want everything redisplayed, the current idiom is | |
| 9464 `(sit-for 0)'. | |
| 428 | 9465 */ |
| 9466 (device, no_preempt)) | |
| 9467 { | |
| 9468 struct device *d = decode_device (device); | |
| 9469 int count = specpdl_depth (); | |
| 9470 | |
| 9471 if (!NILP (no_preempt)) | |
| 853 | 9472 internal_bind_int (&disable_preemption, 1 + disable_preemption); |
| 428 | 9473 |
| 440 | 9474 redisplay_device (d, 0); |
| 428 | 9475 |
| 442 | 9476 /* See the comment in Fredisplay_frame. */ |
| 9477 RESET_CHANGED_SET_FLAGS; | |
| 9478 | |
| 771 | 9479 return unbind_to (count); |
| 428 | 9480 } |
| 9481 | |
| 9482 /* Big lie. Big lie. This will force all modelines to be updated | |
| 9483 regardless if the all flag is set or not. It remains in existence | |
| 9484 solely for backwards compatibility. */ | |
| 9485 DEFUN ("redraw-modeline", Fredraw_modeline, 0, 1, 0, /* | |
| 9486 Force the modeline of the current buffer to be redisplayed. | |
| 9487 With optional non-nil ALL, force redisplay of all modelines. | |
| 9488 */ | |
| 2286 | 9489 (UNUSED (all))) |
| 428 | 9490 { |
| 9491 MARK_MODELINE_CHANGED; | |
| 9492 return Qnil; | |
| 9493 } | |
| 9494 | |
| 9495 DEFUN ("force-cursor-redisplay", Fforce_cursor_redisplay, 0, 1, 0, /* | |
| 9496 Force an immediate update of the cursor on FRAME. | |
| 9497 FRAME defaults to the selected frame if omitted. | |
| 9498 */ | |
| 9499 (frame)) | |
| 9500 { | |
| 1279 | 9501 struct frame *f = decode_frame (frame); |
| 9502 | |
| 9503 if (!FRAME_STREAM_P (f)) | |
| 9504 redisplay_redraw_cursor (f, 1); | |
| 428 | 9505 return Qnil; |
| 9506 } | |
| 9507 | |
| 9508 | |
| 9509 /***************************************************************************/ | |
| 9510 /* */ | |
| 872 | 9511 /* Change flags */ |
| 428 | 9512 /* */ |
| 9513 /***************************************************************************/ | |
| 9514 | |
| 9515 static void | |
| 2286 | 9516 margin_width_changed_in_frame (Lisp_Object UNUSED (specifier), |
| 9517 struct frame *UNUSED (f), | |
| 9518 Lisp_Object UNUSED (oldval)) | |
| 428 | 9519 { |
| 9520 /* Nothing to be done? */ | |
| 9521 } | |
| 9522 | |
| 9523 int | |
| 2286 | 9524 redisplay_variable_changed (Lisp_Object UNUSED (sym), |
| 9525 Lisp_Object *UNUSED (val), | |
| 9526 Lisp_Object UNUSED (in_object), | |
| 9527 int UNUSED (flags)) | |
| 428 | 9528 { |
| 9529 /* #### clip_changed should really be renamed something like | |
| 9530 global_redisplay_change. */ | |
| 9531 MARK_CLIP_CHANGED; | |
| 9532 return 0; | |
| 9533 } | |
| 9534 | |
| 9535 /* This is called if the built-in glyphs have their properties | |
| 9536 changed. */ | |
| 9537 void | |
| 2286 | 9538 redisplay_glyph_changed (Lisp_Object UNUSED (glyph), |
| 9539 Lisp_Object UNUSED (property), Lisp_Object locale) | |
| 428 | 9540 { |
| 9541 if (WINDOWP (locale)) | |
| 9542 { | |
| 9543 MARK_FRAME_GLYPHS_CHANGED (XFRAME (WINDOW_FRAME (XWINDOW (locale)))); | |
| 9544 } | |
| 9545 else if (FRAMEP (locale)) | |
| 9546 { | |
| 9547 MARK_FRAME_GLYPHS_CHANGED (XFRAME (locale)); | |
| 9548 } | |
| 9549 else if (DEVICEP (locale)) | |
| 9550 { | |
| 9551 Lisp_Object frmcons; | |
| 9552 DEVICE_FRAME_LOOP (frmcons, XDEVICE (locale)) | |
| 9553 MARK_FRAME_GLYPHS_CHANGED (XFRAME (XCAR (frmcons))); | |
| 9554 } | |
| 9555 else if (CONSOLEP (locale)) | |
| 9556 { | |
| 9557 Lisp_Object frmcons, devcons; | |
| 9558 CONSOLE_FRAME_LOOP_NO_BREAK (frmcons, devcons, XCONSOLE (locale)) | |
| 9559 MARK_FRAME_GLYPHS_CHANGED (XFRAME (XCAR (frmcons))); | |
| 9560 } | |
| 9561 else /* global or buffer */ | |
| 9562 { | |
| 9563 Lisp_Object frmcons, devcons, concons; | |
| 9564 FRAME_LOOP_NO_BREAK (frmcons, devcons, concons) | |
| 9565 MARK_FRAME_GLYPHS_CHANGED (XFRAME (XCAR (frmcons))); | |
| 9566 } | |
| 9567 } | |
| 9568 | |
| 9569 static void | |
| 2286 | 9570 text_cursor_visible_p_changed (Lisp_Object UNUSED (specifier), |
| 9571 struct window *w, Lisp_Object UNUSED (oldval)) | |
| 428 | 9572 { |
| 9573 if (XFRAME (w->frame)->init_finished) | |
| 9574 Fforce_cursor_redisplay (w->frame); | |
| 9575 } | |
| 9576 | |
| 872 | 9577 void |
| 9578 mark_buffers_changed (void) | |
| 9579 { | |
| 9580 MARK_TYPE_CHANGED (buffers); | |
| 9581 } | |
| 9582 | |
| 9583 void | |
| 9584 mark_clip_changed (void) | |
| 9585 { | |
| 9586 MARK_TYPE_CHANGED (clip); | |
| 9587 } | |
| 9588 | |
| 9589 void | |
| 9590 mark_extents_changed (void) | |
| 9591 { | |
| 9592 MARK_TYPE_CHANGED (extents); | |
| 9593 } | |
| 9594 | |
| 9595 void | |
| 9596 mark_icon_changed (void) | |
| 9597 { | |
| 9598 MARK_TYPE_CHANGED (icon); | |
| 9599 } | |
| 9600 | |
| 9601 void | |
| 9602 mark_menubar_changed (void) | |
| 9603 { | |
| 9604 MARK_TYPE_CHANGED (menubar); | |
| 9605 } | |
| 9606 | |
| 9607 void | |
| 9608 mark_modeline_changed (void) | |
| 9609 { | |
| 9610 MARK_TYPE_CHANGED (modeline); | |
| 9611 } | |
| 9612 | |
| 9613 void | |
| 9614 mark_point_changed (void) | |
| 9615 { | |
| 9616 MARK_TYPE_CHANGED (point); | |
| 9617 } | |
| 9618 | |
| 9619 void | |
| 9620 mark_toolbar_changed (void) | |
| 9621 { | |
| 9622 MARK_TYPE_CHANGED (toolbar); | |
| 9623 } | |
| 9624 | |
| 9625 void | |
| 9626 mark_gutter_changed (void) | |
| 9627 { | |
| 9628 MARK_TYPE_CHANGED (gutter); | |
| 9629 } | |
| 9630 | |
| 9631 void | |
| 9632 mark_glyphs_changed (void) | |
| 9633 { | |
| 9634 MARK_TYPE_CHANGED (glyphs); | |
| 9635 } | |
| 9636 | |
| 9637 void | |
| 9638 mark_subwindows_changed (void) | |
| 9639 { | |
| 9640 MARK_TYPE_CHANGED (subwindows); | |
| 9641 } | |
| 9642 | |
| 9643 void | |
| 9644 mark_subwindows_state_changed (void) | |
| 9645 { | |
| 9646 MARK_TYPE_CHANGED (subwindows_state); | |
| 9647 } | |
| 9648 | |
| 428 | 9649 #ifdef MEMORY_USAGE_STATS |
| 9650 | |
| 9651 | |
| 9652 /***************************************************************************/ | |
| 9653 /* */ | |
| 9654 /* memory usage computation */ | |
| 9655 /* */ | |
| 9656 /***************************************************************************/ | |
| 9657 | |
| 9658 static int | |
| 9659 compute_rune_dynarr_usage (rune_dynarr *dyn, struct overhead_stats *ovstats) | |
| 9660 { | |
| 9661 return dyn ? Dynarr_memory_usage (dyn, ovstats) : 0; | |
| 9662 } | |
| 9663 | |
| 9664 static int | |
| 9665 compute_display_block_dynarr_usage (display_block_dynarr *dyn, | |
| 9666 struct overhead_stats *ovstats) | |
| 9667 { | |
| 9668 int total, i; | |
| 9669 | |
| 9670 if (!dyn) | |
| 9671 return 0; | |
| 9672 | |
| 9673 total = Dynarr_memory_usage (dyn, ovstats); | |
| 9674 for (i = 0; i < Dynarr_largest (dyn); i++) | |
| 9675 total += compute_rune_dynarr_usage (Dynarr_at (dyn, i).runes, ovstats); | |
| 9676 | |
| 9677 return total; | |
| 9678 } | |
| 9679 | |
| 9680 static int | |
| 9681 compute_glyph_block_dynarr_usage (glyph_block_dynarr *dyn, | |
| 9682 struct overhead_stats *ovstats) | |
| 9683 { | |
| 9684 return dyn ? Dynarr_memory_usage (dyn, ovstats) : 0; | |
| 9685 } | |
| 9686 | |
| 9687 int | |
| 9688 compute_display_line_dynarr_usage (display_line_dynarr *dyn, | |
| 9689 struct overhead_stats *ovstats) | |
| 9690 { | |
| 9691 int total, i; | |
| 9692 | |
| 9693 if (!dyn) | |
| 9694 return 0; | |
| 9695 | |
| 9696 total = Dynarr_memory_usage (dyn, ovstats); | |
| 9697 for (i = 0; i < Dynarr_largest (dyn); i++) | |
| 9698 { | |
| 9699 struct display_line *dl = &Dynarr_at (dyn, i); | |
| 9700 total += compute_display_block_dynarr_usage(dl->display_blocks, ovstats); | |
| 9701 total += compute_glyph_block_dynarr_usage (dl->left_glyphs, ovstats); | |
| 9702 total += compute_glyph_block_dynarr_usage (dl->right_glyphs, ovstats); | |
| 9703 } | |
| 9704 | |
| 9705 return total; | |
| 9706 } | |
| 9707 | |
| 9708 int | |
| 9709 compute_line_start_cache_dynarr_usage (line_start_cache_dynarr *dyn, | |
| 9710 struct overhead_stats *ovstats) | |
| 9711 { | |
| 9712 return dyn ? Dynarr_memory_usage (dyn, ovstats) : 0; | |
| 9713 } | |
| 9714 | |
| 9715 #endif /* MEMORY_USAGE_STATS */ | |
| 9716 | |
| 1204 | 9717 #ifdef ERROR_CHECK_DISPLAY |
| 9718 | |
| 800 | 9719 static int |
| 2286 | 9720 sledgehammer_check_redisplay_structs_1 (struct window *w, |
| 9721 void *UNUSED (closure)) | |
| 800 | 9722 { |
| 9723 int i, j; | |
| 9724 display_line_dynarr *dl; | |
| 9725 | |
| 9726 dl = window_display_lines (w, CURRENT_DISP); | |
| 4187 | 9727 |
| 800 | 9728 for (i = 0; i < Dynarr_largest (dl); i++) |
| 9729 for (j = i + 1; j < Dynarr_largest (dl); j++) | |
| 9730 assert (Dynarr_atp (dl, i)->display_blocks != | |
| 9731 Dynarr_atp (dl, j)->display_blocks); | |
| 9732 | |
| 9733 dl = window_display_lines (w, DESIRED_DISP); | |
| 9734 | |
| 9735 for (i = 0; i < Dynarr_largest (dl); i++) | |
| 9736 for (j = i + 1; j < Dynarr_largest (dl); j++) | |
| 9737 assert (Dynarr_atp (dl, i)->display_blocks != | |
| 9738 Dynarr_atp (dl, j)->display_blocks); | |
| 9739 | |
| 9740 return 0; | |
| 9741 } | |
| 9742 | |
| 9743 static void | |
| 9744 sledgehammer_check_redisplay_structs (void) | |
| 9745 { | |
| 9746 map_windows (0, sledgehammer_check_redisplay_structs_1, NULL); | |
| 9747 } | |
| 9748 | |
| 1204 | 9749 #endif /* ERROR_CHECK_DISPLAY */ |
| 9750 | |
| 428 | 9751 |
| 9752 /***************************************************************************/ | |
| 9753 /* */ | |
| 9754 /* initialization */ | |
| 9755 /* */ | |
| 9756 /***************************************************************************/ | |
| 9757 | |
| 9758 void | |
| 9759 init_redisplay (void) | |
| 9760 { | |
| 9761 disable_preemption = 0; | |
| 9762 preemption_count = 0; | |
| 9763 | |
| 9764 #ifndef PDUMP | |
| 9765 if (!initialized) | |
| 9766 #endif | |
| 9767 { | |
| 440 | 9768 if (!cmotion_display_lines) |
| 9769 cmotion_display_lines = Dynarr_new (display_line); | |
| 867 | 9770 if (!mode_spec_ibyte_string) |
| 9771 mode_spec_ibyte_string = Dynarr_new (Ibyte); | |
| 440 | 9772 if (!formatted_string_extent_dynarr) |
| 9773 formatted_string_extent_dynarr = Dynarr_new (EXTENT); | |
| 9774 if (!formatted_string_extent_start_dynarr) | |
| 9775 formatted_string_extent_start_dynarr = Dynarr_new (Bytecount); | |
| 9776 if (!formatted_string_extent_end_dynarr) | |
| 9777 formatted_string_extent_end_dynarr = Dynarr_new (Bytecount); | |
| 9778 if (!internal_cache) | |
| 9779 internal_cache = Dynarr_new (line_start_cache); | |
| 428 | 9780 } |
| 9781 | |
|
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|
9782 if (!initialized) |
| 428 | 9783 return; |
| 9784 | |
|
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|
9785 if (noninteractive) |
|
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|
9786 { |
|
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diff
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|
9787 Vinitial_device_type = Qstream; |
|
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|
9788 return; |
|
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|
9789 } |
|
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|
9790 |
| 428 | 9791 /* If the user wants to use a window system, we shouldn't bother |
| 9792 initializing the terminal. This is especially important when the | |
| 9793 terminal is so dumb that emacs gives up before and doesn't bother | |
| 9794 using the window system. | |
| 9795 | |
| 9796 If the DISPLAY environment variable is set, try to use X, and die | |
| 9797 with an error message if that doesn't work. */ | |
| 9798 | |
| 9799 #ifdef HAVE_X_WINDOWS | |
| 9800 if (!strcmp (display_use, "x")) | |
| 9801 { | |
| 9802 /* Some stuff checks this way early. */ | |
| 9803 Vwindow_system = Qx; | |
|
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diff
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|
9804 Vinitial_device_type = Qx; |
| 428 | 9805 return; |
| 9806 } | |
| 9807 #endif /* HAVE_X_WINDOWS */ | |
| 9808 | |
| 462 | 9809 #ifdef HAVE_GTK |
| 9810 if (!strcmp (display_use, "gtk")) | |
| 9811 { | |
| 9812 Vwindow_system = Qgtk; | |
|
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|
9813 Vinitial_device_type = Qgtk; |
| 462 | 9814 return; |
| 9815 } | |
| 9816 #endif | |
| 9817 | |
| 428 | 9818 #ifdef HAVE_MS_WINDOWS |
| 9819 if (!strcmp (display_use, "mswindows")) | |
| 9820 { | |
| 9821 /* Some stuff checks this way early. */ | |
| 9822 Vwindow_system = Qmswindows; | |
|
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|
9823 Vinitial_device_type = Qmswindows; |
| 428 | 9824 return; |
| 9825 } | |
| 9826 #endif /* HAVE_MS_WINDOWS */ | |
| 9827 | |
| 9828 #ifdef HAVE_TTY | |
| 9829 /* If no window system has been specified, try to use the terminal. */ | |
| 9830 if (!isatty (0)) | |
| 9831 { | |
| 9832 stderr_out ("XEmacs: standard input is not a tty\n"); | |
| 9833 exit (1); | |
| 9834 } | |
| 9835 | |
| 9836 /* Look at the TERM variable */ | |
| 771 | 9837 if (!egetenv ("TERM")) |
| 428 | 9838 { |
| 9839 stderr_out ("Please set the environment variable TERM; see tset(1).\n"); | |
| 9840 exit (1); | |
| 9841 } | |
| 9842 | |
|
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|
9843 Vinitial_device_type = Qtty; |
| 428 | 9844 return; |
| 9845 #else /* not HAVE_TTY */ | |
| 9846 /* No DISPLAY specified, and no TTY support. */ | |
| 9847 stderr_out ("XEmacs: Cannot open display.\n\ | |
| 9848 Please set the environmental variable DISPLAY to an appropriate value.\n"); | |
| 9849 exit (1); | |
| 9850 #endif | |
| 9851 /* Unreached. */ | |
| 9852 } | |
| 9853 | |
| 9854 void | |
| 9855 syms_of_redisplay (void) | |
| 9856 { | |
| 563 | 9857 DEFSYMBOL (Qcursor_in_echo_area); |
| 9858 DEFSYMBOL (Qdisplay_warning_buffer); | |
| 9859 DEFSYMBOL (Qbar_cursor); | |
| 9860 DEFSYMBOL (Qtop_bottom); | |
| 9861 DEFSYMBOL (Qbuffer_list_changed_hook); | |
| 428 | 9862 |
| 9863 DEFSUBR (Fredisplay_echo_area); | |
| 9864 DEFSUBR (Fredraw_frame); | |
| 9865 DEFSUBR (Fredisplay_frame); | |
| 9866 DEFSUBR (Fredraw_device); | |
| 9867 DEFSUBR (Fredisplay_device); | |
| 9868 DEFSUBR (Fredraw_modeline); | |
| 9869 DEFSUBR (Fforce_cursor_redisplay); | |
| 9870 } | |
| 9871 | |
| 9872 void | |
| 9873 vars_of_redisplay (void) | |
| 9874 { | |
|
4952
19a72041c5ed
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Ben Wing <ben@xemacs.org>
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4928
diff
changeset
|
9875 QSin_redisplay = build_defer_string ("(in redisplay)"); |
| 1292 | 9876 staticpro (&QSin_redisplay); |
| 428 | 9877 |
| 1318 | 9878 Vpost_redisplay_actions = Qnil; |
| 9879 staticpro (&Vpost_redisplay_actions); | |
| 9880 | |
| 428 | 9881 #if 0 |
| 9882 staticpro (&last_arrow_position); | |
| 9883 staticpro (&last_arrow_string); | |
| 9884 last_arrow_position = Qnil; | |
| 9885 last_arrow_string = Qnil; | |
| 9886 #endif /* 0 */ | |
| 9887 | |
| 9888 /* #### Probably temporary */ | |
| 9889 DEFVAR_INT ("redisplay-cache-adjustment", &cache_adjustment /* | |
| 9890 \(Temporary) Setting this will impact the performance of the internal | |
| 9891 line start cache. | |
| 9892 */ ); | |
| 9893 cache_adjustment = 2; | |
| 9894 | |
| 1268 | 9895 DEFVAR_INT ("maximum-preempts", &max_preempts /* |
| 9896 Maximum number of times redisplay can be preempted by user input. | |
| 9897 */ ); | |
| 9898 max_preempts = INIT_MAX_PREEMPTS; | |
| 9899 | |
| 428 | 9900 DEFVAR_INT_MAGIC ("pixel-vertical-clip-threshold", &vertical_clip /* |
| 9901 Minimum pixel height for clipped bottom display line. | |
| 9902 A clipped line shorter than this won't be displayed. | |
| 9903 */ , | |
| 9904 redisplay_variable_changed); | |
| 9905 vertical_clip = 5; | |
| 9906 | |
| 9907 DEFVAR_INT_MAGIC ("pixel-horizontal-clip-threshold", &horizontal_clip /* | |
| 9908 Minimum visible area for clipped glyphs at right boundary. | |
| 9909 Clipped glyphs shorter than this won't be displayed. | |
| 9910 Only pixmap glyph instances are currently allowed to be clipped. | |
| 9911 */ , | |
| 9912 redisplay_variable_changed); | |
| 9913 horizontal_clip = 5; | |
| 9914 | |
| 9915 DEFVAR_LISP ("global-mode-string", &Vglobal_mode_string /* | |
| 9916 String displayed by modeline-format's "%m" specification. | |
| 9917 */ ); | |
| 9918 Vglobal_mode_string = Qnil; | |
| 9919 | |
| 9920 DEFVAR_LISP_MAGIC ("overlay-arrow-position", &Voverlay_arrow_position /* | |
| 9921 Marker for where to display an arrow on top of the buffer text. | |
| 9922 This must be the beginning of a line in order to work. | |
| 9923 See also `overlay-arrow-string'. | |
| 9924 */ , | |
| 9925 redisplay_variable_changed); | |
| 9926 Voverlay_arrow_position = Qnil; | |
| 9927 | |
| 9928 DEFVAR_LISP_MAGIC ("overlay-arrow-string", &Voverlay_arrow_string /* | |
| 442 | 9929 String or glyph to display as an arrow. See also `overlay-arrow-position'. |
| 444 | 9930 \(Note that despite the name of this variable, it can be set to a glyph as |
| 442 | 9931 well as a string.) |
| 428 | 9932 */ , |
| 9933 redisplay_variable_changed); | |
| 9934 Voverlay_arrow_string = Qnil; | |
| 9935 | |
| 9936 DEFVAR_INT ("scroll-step", &scroll_step /* | |
| 9937 *The number of lines to try scrolling a window by when point moves out. | |
| 9938 If that fails to bring point back on frame, point is centered instead. | |
| 9939 If this is zero, point is always centered after it moves off screen. | |
| 9940 */ ); | |
| 9941 scroll_step = 0; | |
| 9942 | |
| 9943 DEFVAR_INT ("scroll-conservatively", &scroll_conservatively /* | |
| 9944 *Scroll up to this many lines, to bring point back on screen. | |
| 9945 */ ); | |
| 9946 scroll_conservatively = 0; | |
| 9947 | |
| 9948 DEFVAR_BOOL_MAGIC ("truncate-partial-width-windows", | |
| 9949 &truncate_partial_width_windows /* | |
| 9950 *Non-nil means truncate lines in all windows less than full frame wide. | |
| 9951 */ , | |
| 9952 redisplay_variable_changed); | |
| 9953 truncate_partial_width_windows = 1; | |
| 9954 | |
| 442 | 9955 DEFVAR_LISP ("visible-bell", &Vvisible_bell /* |
| 9956 *Non-nil substitutes a visual signal for the audible bell. | |
| 9957 | |
| 9958 Default behavior is to flash the whole screen. On some platforms, | |
| 9959 special effects are available using the following values: | |
| 9960 | |
| 3025 | 9961 `display' Flash the whole screen (ie, the default behavior). |
| 9962 `top-bottom' Flash only the top and bottom lines of the selected frame. | |
| 442 | 9963 |
| 9964 When effects are unavailable on a platform, the visual bell is the | |
| 9965 default, whole screen. (Currently only X supports any special effects.) | |
| 428 | 9966 */ ); |
| 442 | 9967 Vvisible_bell = Qnil; |
| 428 | 9968 |
| 9969 DEFVAR_BOOL ("no-redraw-on-reenter", &no_redraw_on_reenter /* | |
| 9970 *Non-nil means no need to redraw entire frame after suspending. | |
| 9971 A non-nil value is useful if the terminal can automatically preserve | |
| 9972 Emacs's frame display when you reenter Emacs. | |
| 9973 It is up to you to set this variable if your terminal can do that. | |
| 9974 */ ); | |
| 9975 no_redraw_on_reenter = 0; | |
| 9976 | |
| 9977 DEFVAR_LISP ("window-system", &Vwindow_system /* | |
| 9978 A symbol naming the window-system under which Emacs is running, | |
| 9979 such as `x', or nil if emacs is running on an ordinary terminal. | |
| 9980 | |
| 9981 Do not use this variable, except for GNU Emacs compatibility, as it | |
| 9982 gives wrong values in a multi-device environment. Use `console-type' | |
| 9983 instead. | |
| 9984 */ ); | |
| 9985 Vwindow_system = Qnil; | |
| 9986 | |
|
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9987 DEFVAR_CONST_LISP ("initial-device-type", &Vinitial_device_type /* |
|
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9988 The type of the first XEmacs device to be created. |
|
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|
9989 |
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|
9990 This is constant; it's used by the command line handling code to communicate |
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|
9991 to Lisp what type the initial device to be created should be. |
| 428 | 9992 */ ); |
|
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9993 Vinitial_device_type = Qnil; |
| 428 | 9994 |
| 9995 DEFVAR_BOOL ("cursor-in-echo-area", &cursor_in_echo_area /* | |
| 9996 Non-nil means put cursor in minibuffer, at end of any message there. | |
| 9997 */ ); | |
| 9998 cursor_in_echo_area = 0; | |
| 9999 | |
| 10000 /* #### Shouldn't this be generalized as follows: | |
| 10001 | |
| 10002 if nil, use block cursor. | |
| 10003 if a number, use a bar cursor of that width. | |
| 10004 Otherwise, use a 1-pixel bar cursor. | |
| 10005 | |
| 10006 #### Or better yet, this variable should be trashed entirely | |
| 10007 (use a Lisp-magic variable to maintain compatibility) | |
| 10008 and a specifier `cursor-shape' added, which allows a block | |
| 10009 cursor, a bar cursor, a flashing block or bar cursor, | |
| 10010 maybe a caret cursor, etc. */ | |
| 10011 | |
| 10012 DEFVAR_LISP ("bar-cursor", &Vbar_cursor /* | |
| 448 | 10013 *Use vertical bar cursor if non-nil. If t width is 1 pixel, otherwise 2. |
| 428 | 10014 */ ); |
| 10015 Vbar_cursor = Qnil; | |
| 10016 | |
| 442 | 10017 DEFVAR_LISP ("buffer-list-changed-hook", &Vbuffer_list_changed_hook /* |
| 10018 Function or functions to call when a frame's buffer list has changed. | |
| 10019 This is called during redisplay, before redisplaying each frame. | |
| 10020 Functions on this hook are called with one argument, the frame. | |
| 10021 */ ); | |
| 10022 Vbuffer_list_changed_hook = Qnil; | |
| 10023 | |
| 428 | 10024 DEFVAR_INT ("display-warning-tick", &display_warning_tick /* |
| 10025 Bump this to tell the C code to call `display-warning-buffer' | |
| 10026 at next redisplay. You should not normally change this; the function | |
| 10027 `display-warning' automatically does this at appropriate times. | |
| 10028 */ ); | |
| 10029 display_warning_tick = 0; | |
| 10030 | |
| 10031 DEFVAR_BOOL ("inhibit-warning-display", &inhibit_warning_display /* | |
| 10032 Non-nil means inhibit display of warning messages. | |
| 10033 You should *bind* this, not set it. Any pending warning messages | |
| 10034 will be displayed when the binding no longer applies. | |
| 10035 */ ); | |
| 10036 /* reset to 0 by startup.el after the splash screen has displayed. | |
| 10037 This way, the warnings don't obliterate the splash screen. */ | |
| 10038 inhibit_warning_display = 1; | |
| 10039 | |
| 10040 DEFVAR_BOOL ("column-number-start-at-one", &column_number_start_at_one /* | |
| 10041 *Non-nil means column display number starts at 1. | |
| 10042 */ ); | |
| 10043 column_number_start_at_one = 0; | |
| 10044 } | |
| 10045 | |
| 10046 void | |
| 10047 specifier_vars_of_redisplay (void) | |
| 10048 { | |
| 10049 DEFVAR_SPECIFIER ("left-margin-width", &Vleft_margin_width /* | |
| 10050 *Width of left margin. | |
| 10051 This is a specifier; use `set-specifier' to change it. | |
| 10052 */ ); | |
| 10053 Vleft_margin_width = Fmake_specifier (Qnatnum); | |
| 10054 set_specifier_fallback (Vleft_margin_width, list1 (Fcons (Qnil, Qzero))); | |
| 10055 set_specifier_caching (Vleft_margin_width, | |
| 438 | 10056 offsetof (struct window, left_margin_width), |
| 428 | 10057 some_window_value_changed, |
| 438 | 10058 offsetof (struct frame, left_margin_width), |
| 444 | 10059 margin_width_changed_in_frame, 0); |
| 428 | 10060 |
| 10061 DEFVAR_SPECIFIER ("right-margin-width", &Vright_margin_width /* | |
| 10062 *Width of right margin. | |
| 10063 This is a specifier; use `set-specifier' to change it. | |
| 10064 */ ); | |
| 10065 Vright_margin_width = Fmake_specifier (Qnatnum); | |
| 10066 set_specifier_fallback (Vright_margin_width, list1 (Fcons (Qnil, Qzero))); | |
| 10067 set_specifier_caching (Vright_margin_width, | |
| 438 | 10068 offsetof (struct window, right_margin_width), |
| 428 | 10069 some_window_value_changed, |
| 438 | 10070 offsetof (struct frame, right_margin_width), |
| 444 | 10071 margin_width_changed_in_frame, 0); |
| 428 | 10072 |
| 10073 DEFVAR_SPECIFIER ("minimum-line-ascent", &Vminimum_line_ascent /* | |
| 10074 *Minimum ascent height of lines. | |
| 10075 This is a specifier; use `set-specifier' to change it. | |
| 10076 */ ); | |
| 10077 Vminimum_line_ascent = Fmake_specifier (Qnatnum); | |
| 10078 set_specifier_fallback (Vminimum_line_ascent, list1 (Fcons (Qnil, Qzero))); | |
| 10079 set_specifier_caching (Vminimum_line_ascent, | |
| 438 | 10080 offsetof (struct window, minimum_line_ascent), |
| 428 | 10081 some_window_value_changed, |
| 444 | 10082 0, 0, 0); |
| 428 | 10083 |
| 10084 DEFVAR_SPECIFIER ("minimum-line-descent", &Vminimum_line_descent /* | |
| 10085 *Minimum descent height of lines. | |
| 10086 This is a specifier; use `set-specifier' to change it. | |
| 10087 */ ); | |
| 10088 Vminimum_line_descent = Fmake_specifier (Qnatnum); | |
| 10089 set_specifier_fallback (Vminimum_line_descent, list1 (Fcons (Qnil, Qzero))); | |
| 10090 set_specifier_caching (Vminimum_line_descent, | |
| 438 | 10091 offsetof (struct window, minimum_line_descent), |
| 428 | 10092 some_window_value_changed, |
| 444 | 10093 0, 0, 0); |
| 428 | 10094 |
| 10095 DEFVAR_SPECIFIER ("use-left-overflow", &Vuse_left_overflow /* | |
| 10096 *Non-nil means use the left outside margin as extra whitespace when | |
| 3025 | 10097 displaying `whitespace' or `inside-margin' glyphs. |
| 428 | 10098 This is a specifier; use `set-specifier' to change it. |
| 10099 */ ); | |
| 10100 Vuse_left_overflow = Fmake_specifier (Qboolean); | |
| 10101 set_specifier_fallback (Vuse_left_overflow, list1 (Fcons (Qnil, Qnil))); | |
| 10102 set_specifier_caching (Vuse_left_overflow, | |
| 438 | 10103 offsetof (struct window, use_left_overflow), |
| 428 | 10104 some_window_value_changed, |
| 444 | 10105 0, 0, 0); |
| 428 | 10106 |
| 10107 DEFVAR_SPECIFIER ("use-right-overflow", &Vuse_right_overflow /* | |
| 10108 *Non-nil means use the right outside margin as extra whitespace when | |
| 3025 | 10109 displaying `whitespace' or `inside-margin' glyphs. |
| 428 | 10110 This is a specifier; use `set-specifier' to change it. |
| 10111 */ ); | |
| 10112 Vuse_right_overflow = Fmake_specifier (Qboolean); | |
| 10113 set_specifier_fallback (Vuse_right_overflow, list1 (Fcons (Qnil, Qnil))); | |
| 10114 set_specifier_caching (Vuse_right_overflow, | |
| 438 | 10115 offsetof (struct window, use_right_overflow), |
| 428 | 10116 some_window_value_changed, |
| 444 | 10117 0, 0, 0); |
| 428 | 10118 |
| 10119 DEFVAR_SPECIFIER ("text-cursor-visible-p", &Vtext_cursor_visible_p /* | |
| 10120 *Non-nil means the text cursor is visible (this is usually the case). | |
| 10121 This is a specifier; use `set-specifier' to change it. | |
| 10122 */ ); | |
| 10123 Vtext_cursor_visible_p = Fmake_specifier (Qboolean); | |
| 10124 set_specifier_fallback (Vtext_cursor_visible_p, list1 (Fcons (Qnil, Qt))); | |
| 10125 set_specifier_caching (Vtext_cursor_visible_p, | |
| 438 | 10126 offsetof (struct window, text_cursor_visible_p), |
| 428 | 10127 text_cursor_visible_p_changed, |
| 444 | 10128 0, 0, 0); |
| 428 | 10129 |
| 10130 } |