Mercurial > hg > xemacs-beta
annotate src/window.c @ 5117:3742ea8250b5 ben-lisp-object ben-lisp-object-final-ws-year-2005
Checking in final CVS version of workspace 'ben-lisp-object'
| author | Ben Wing <ben@xemacs.org> |
|---|---|
| date | Sat, 26 Dec 2009 00:20:27 -0600 |
| parents | 135bb6aa3ee2 |
| children | e0db3c197671 |
| rev | line source |
|---|---|
| 428 | 1 /* Window creation, deletion and examination for XEmacs. |
| 2 Copyright (C) 1985-1987, 1992-1995 Free Software Foundation, Inc. | |
| 3 Copyright (C) 1994, 1995 Board of Trustees, University of Illinois. | |
| 793 | 4 Copyright (C) 1995, 1996, 2002 Ben Wing. |
| 428 | 5 Copyright (C) 1996 Chuck Thompson. |
| 6 | |
| 7 This file is part of XEmacs. | |
| 8 | |
| 9 XEmacs is free software; you can redistribute it and/or modify it | |
| 10 under the terms of the GNU General Public License as published by the | |
| 11 Free Software Foundation; either version 2, or (at your option) any | |
| 12 later version. | |
| 13 | |
| 14 XEmacs is distributed in the hope that it will be useful, but WITHOUT | |
| 15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 17 for more details. | |
| 18 | |
| 19 You should have received a copy of the GNU General Public License | |
| 20 along with XEmacs; see the file COPYING. If not, write to | |
| 21 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
| 22 Boston, MA 02111-1307, USA. */ | |
| 23 | |
| 24 /* Synched up with: FSF 19.30. */ | |
| 25 /* Beginning to diverge significantly. */ | |
| 26 | |
| 853 | 27 /* Authorship: |
| 28 | |
| 29 Based on code from pre-release FSF 19, c. 1991. | |
| 30 Significantly reworked by Chuck Thompson, 1993-1996. | |
| 31 window mirror stuff added by Chuck Thompson c. 1993. | |
| 32 various cleanup by Ben Wing c. 1995 (window slots, window init code, | |
| 33 memory usage, synch. up to FSF 19.30, other). | |
| 34 Unknown work by Andy Piper. | |
| 35 new window-width/height fns. by Ben Wing, Mar 2000. */ | |
| 36 | |
| 428 | 37 /* This file has been Mule-ized. */ |
| 38 | |
| 39 #include <config.h> | |
| 40 #include "lisp.h" | |
| 41 | |
| 42 #include "buffer.h" | |
| 800 | 43 #include "commands.h" |
| 872 | 44 #include "device-impl.h" |
| 800 | 45 #include "elhash.h" |
| 428 | 46 #include "faces.h" |
| 872 | 47 #include "frame-impl.h" |
| 800 | 48 #include "glyphs.h" |
| 49 #include "gutter.h" | |
| 428 | 50 #include "objects.h" |
| 51 #include "redisplay.h" | |
| 872 | 52 #include "window-impl.h" |
| 428 | 53 |
| 1149 | 54 Lisp_Object Qwindowp, Qwindow_live_p; |
| 428 | 55 Lisp_Object Qdisplay_buffer; |
| 56 | |
| 57 #ifdef MEMORY_USAGE_STATS | |
| 58 Lisp_Object Qface_cache, Qglyph_cache, Qline_start_cache, Qother_redisplay; | |
| 59 #ifdef HAVE_SCROLLBARS | |
| 60 Lisp_Object Qscrollbar_instances; | |
| 61 #endif | |
| 62 #endif | |
| 63 | |
| 1979 | 64 extern int allow_deletion_of_last_visible_frame; |
| 65 | |
| 428 | 66 EXFUN (Fnext_window, 4); |
| 67 | |
| 68 static int window_pixel_width_to_char_width (struct window *w, | |
| 69 int pixel_width, | |
| 70 int include_margins_p); | |
| 71 static int window_char_width_to_pixel_width (struct window *w, | |
| 72 int char_width, | |
| 73 int include_margins_p); | |
| 74 static int window_pixel_height_to_char_height (struct window *w, | |
| 75 int pixel_height, | |
| 76 int include_gutters_p); | |
| 77 static int window_char_height_to_pixel_height (struct window *w, | |
| 78 int char_height, | |
| 79 int include_gutters_p); | |
| 444 | 80 static void change_window_height (Lisp_Object window, int delta, |
| 81 Lisp_Object horizontalp, int inpixels); | |
| 428 | 82 |
| 83 /* Thickness of shadow border around 3d modelines. */ | |
| 84 Lisp_Object Vmodeline_shadow_thickness; | |
| 85 | |
| 86 /* Whether vertical dividers are draggable and displayed */ | |
| 87 Lisp_Object Vvertical_divider_always_visible_p; | |
| 88 | |
| 89 /* Whether a modeline should be displayed. */ | |
| 90 Lisp_Object Vhas_modeline_p; | |
| 91 | |
| 92 /* Thickness of shadow border around vertical dividers. */ | |
| 93 Lisp_Object Vvertical_divider_shadow_thickness; | |
| 94 | |
| 95 /* Divider surface width (not counting 3-d borders) */ | |
| 96 Lisp_Object Vvertical_divider_line_width; | |
| 97 | |
| 442 | 98 /* Spacing between outer edge of divider border and window edge */ |
| 428 | 99 Lisp_Object Vvertical_divider_spacing; |
| 100 | |
| 101 /* How much to scroll by per-line. */ | |
| 102 Lisp_Object Vwindow_pixel_scroll_increment; | |
| 103 | |
| 104 /* Scroll if point lands on the bottom line and that line is partially | |
| 105 clipped. */ | |
| 106 int scroll_on_clipped_lines; | |
| 107 | |
| 108 /* The minibuffer window of the selected frame. | |
| 109 Note that you cannot test for minibufferness of an arbitrary window | |
| 110 by comparing against this; but you can test for minibufferness of | |
| 111 the selected window. */ | |
| 112 Lisp_Object minibuf_window; | |
| 113 | |
| 114 /* Non-nil means it is the window for C-M-v to scroll | |
| 115 when the minibuffer is selected. */ | |
| 116 Lisp_Object Vminibuffer_scroll_window; | |
| 117 | |
| 118 /* Non-nil means this is the buffer whose window C-M-v should scroll. */ | |
| 119 Lisp_Object Vother_window_scroll_buffer; | |
| 120 | |
| 121 /* Non-nil means it's the function to call to display temp buffers. */ | |
| 122 Lisp_Object Vtemp_buffer_show_function; | |
| 123 | |
| 124 /* If a window gets smaller than either of these, it is removed. */ | |
| 458 | 125 Fixnum window_min_height; |
| 126 Fixnum window_min_width; | |
| 428 | 127 |
| 128 /* Number of lines of continuity in scrolling by screenfuls. */ | |
| 458 | 129 Fixnum next_screen_context_lines; |
| 428 | 130 |
| 1149 | 131 Lisp_Object Qcurrent_window_configuration, Qset_window_configuration; |
| 428 | 132 |
| 707 | 133 Lisp_Object Qtruncate_partial_width_windows; |
| 134 | |
| 428 | 135 #define SET_LAST_MODIFIED(w, cache_too) \ |
| 136 do { \ | |
| 137 (w)->last_modified[CURRENT_DISP] = Qzero; \ | |
| 138 (w)->last_modified[DESIRED_DISP] = Qzero; \ | |
| 139 (w)->last_modified[CMOTION_DISP] = Qzero; \ | |
| 140 if (cache_too) \ | |
| 141 (w)->line_cache_last_updated = Qzero; \ | |
| 142 } while (0) | |
| 143 | |
| 144 #define SET_LAST_FACECHANGE(w) \ | |
| 145 do { \ | |
| 146 (w)->last_facechange[CURRENT_DISP] = Qzero; \ | |
| 147 (w)->last_facechange[DESIRED_DISP] = Qzero; \ | |
| 148 (w)->last_facechange[CMOTION_DISP] = Qzero; \ | |
| 149 } while (0) | |
| 150 | |
| 151 | |
| 1204 | 152 |
| 153 static const struct memory_description int_description_1[] = { | |
| 154 { XD_END } | |
| 155 }; | |
| 156 | |
| 157 static const struct sized_memory_description int_description = { | |
| 158 sizeof (int), | |
| 159 int_description_1 | |
| 160 }; | |
| 161 | |
| 162 static const struct memory_description int_dynarr_description_1[] = { | |
| 163 XD_DYNARR_DESC (int_dynarr, &int_description), | |
| 164 { XD_END } | |
| 165 }; | |
| 166 | |
| 167 static const struct sized_memory_description int_dynarr_description = { | |
| 168 sizeof (int_dynarr), | |
| 169 int_dynarr_description_1 | |
| 170 }; | |
| 171 | |
| 172 static const struct memory_description face_cachel_description_1[] = { | |
| 2367 | 173 { XD_BLOCK_PTR, offsetof (face_cachel, merged_faces), |
| 2551 | 174 1, { &int_dynarr_description } }, |
| 1204 | 175 { XD_LISP_OBJECT, offsetof (face_cachel, face) }, |
| 176 { XD_LISP_OBJECT, offsetof (face_cachel, foreground) }, | |
| 177 { XD_LISP_OBJECT, offsetof (face_cachel, background) }, | |
| 178 { XD_LISP_OBJECT_ARRAY, offsetof (face_cachel, font), NUM_LEADING_BYTES }, | |
| 179 { XD_LISP_OBJECT, offsetof (face_cachel, display_table) }, | |
| 180 { XD_LISP_OBJECT, offsetof (face_cachel, background_pixmap) }, | |
| 181 { XD_END } | |
| 182 }; | |
| 183 | |
| 184 static const struct sized_memory_description face_cachel_description = { | |
| 185 sizeof (face_cachel), | |
| 186 face_cachel_description_1 | |
| 187 }; | |
| 188 | |
| 189 static const struct memory_description face_cachel_dynarr_description_1[] = { | |
| 190 XD_DYNARR_DESC (face_cachel_dynarr, &face_cachel_description), | |
| 191 { XD_END } | |
| 192 }; | |
| 193 | |
| 194 static const struct sized_memory_description face_cachel_dynarr_description = { | |
| 195 sizeof (face_cachel_dynarr), | |
| 196 face_cachel_dynarr_description_1 | |
| 197 }; | |
| 198 | |
| 199 static const struct memory_description glyph_cachel_description_1[] = { | |
| 200 { XD_LISP_OBJECT, offsetof (glyph_cachel, glyph) }, | |
| 201 { XD_END } | |
| 202 }; | |
| 203 | |
| 204 static const struct sized_memory_description glyph_cachel_description = { | |
| 205 sizeof (glyph_cachel), | |
| 206 glyph_cachel_description_1 | |
| 207 }; | |
| 208 | |
| 209 static const struct memory_description glyph_cachel_dynarr_description_1[] = { | |
| 210 XD_DYNARR_DESC (glyph_cachel_dynarr, &glyph_cachel_description), | |
| 211 { XD_END } | |
| 212 }; | |
| 213 | |
| 214 static const struct sized_memory_description glyph_cachel_dynarr_description = { | |
| 215 sizeof (glyph_cachel_dynarr), | |
| 216 glyph_cachel_dynarr_description_1 | |
| 217 }; | |
| 218 | |
| 219 static const struct memory_description line_start_cache_description_1[] = { | |
| 220 { XD_END } | |
| 221 }; | |
| 222 | |
| 223 static const struct sized_memory_description line_start_cache_description = { | |
| 224 sizeof (line_start_cache), | |
| 225 line_start_cache_description_1 | |
| 226 }; | |
| 227 | |
| 228 static const struct memory_description line_start_cache_dynarr_description_1[] = { | |
| 229 XD_DYNARR_DESC (line_start_cache_dynarr, &line_start_cache_description), | |
| 230 { XD_END } | |
| 231 }; | |
| 232 | |
| 233 static const struct sized_memory_description line_start_cache_dynarr_description = { | |
| 234 sizeof (line_start_cache_dynarr), | |
| 235 line_start_cache_dynarr_description_1 | |
| 236 }; | |
| 237 | |
| 238 static const struct memory_description window_description [] = { | |
| 239 #define WINDOW_SLOT(slot) { XD_LISP_OBJECT, offsetof (struct window, slot) }, | |
| 240 #define WINDOW_SLOT_ARRAY(slot, size) \ | |
| 241 { XD_LISP_OBJECT_ARRAY, offsetof (struct window, slot), size }, | |
| 242 #include "winslots.h" | |
| 243 | |
| 2367 | 244 { XD_BLOCK_PTR, offsetof (struct window, face_cachels), |
| 2551 | 245 1, { &face_cachel_dynarr_description } }, |
| 2367 | 246 { XD_BLOCK_PTR, offsetof (struct window, glyph_cachels), |
| 2551 | 247 1, { &glyph_cachel_dynarr_description } }, |
| 2367 | 248 { XD_BLOCK_PTR, offsetof (struct window, line_start_cache), |
| 2775 | 249 1, { &line_start_cache_dynarr_description }, XD_FLAG_NO_KKCC }, |
| 1204 | 250 { XD_END } |
| 251 }; | |
| 428 | 252 |
| 253 static Lisp_Object | |
| 254 mark_window (Lisp_Object obj) | |
| 255 { | |
| 256 struct window *window = XWINDOW (obj); | |
| 257 | |
| 258 mark_face_cachels (window->face_cachels); | |
| 259 mark_glyph_cachels (window->glyph_cachels); | |
| 260 | |
| 617 | 261 #define WINDOW_SLOT(slot) mark_object (window->slot); |
| 428 | 262 #include "winslots.h" |
| 263 | |
| 264 return Qnil; | |
| 265 } | |
| 266 | |
| 267 static void | |
| 2286 | 268 print_window (Lisp_Object obj, Lisp_Object printcharfun, |
| 269 int UNUSED (escapeflag)) | |
| 428 | 270 { |
| 271 if (print_readably) | |
| 563 | 272 printing_unreadable_object ("#<window 0x%x>", XWINDOW (obj)->header.uid); |
| 428 | 273 |
| 826 | 274 write_c_string (printcharfun, "#<window"); |
| 428 | 275 if (!NILP (XWINDOW (obj)->buffer)) |
| 276 { | |
| 277 Lisp_Object name = XBUFFER (XWINDOW (obj)->buffer)->name; | |
| 800 | 278 write_fmt_string_lisp (printcharfun, " on %S", 1, name); |
| 428 | 279 } |
| 800 | 280 write_fmt_string (printcharfun, " 0x%x>", XWINDOW (obj)->header.uid); |
| 428 | 281 } |
| 282 | |
| 283 static void | |
| 2286 | 284 finalize_window (void *header, int UNUSED (for_disksave)) |
| 428 | 285 { |
| 286 struct window *w = (struct window *) header; | |
| 287 | |
| 288 if (w->line_start_cache) | |
| 289 { | |
| 290 Dynarr_free (w->line_start_cache); | |
| 291 w->line_start_cache = 0; | |
| 292 } | |
| 293 | |
| 294 if (w->face_cachels) | |
| 295 { | |
| 296 int i; | |
| 297 | |
| 298 for (i = 0; i < Dynarr_length (w->face_cachels); i++) | |
| 299 { | |
| 300 struct face_cachel *cachel = Dynarr_atp (w->face_cachels, i); | |
| 301 if (cachel->merged_faces) | |
| 302 { | |
| 303 Dynarr_free (cachel->merged_faces); | |
| 304 cachel->merged_faces = 0; | |
| 305 } | |
| 306 } | |
| 307 Dynarr_free (w->face_cachels); | |
| 308 w->face_cachels = 0; | |
| 309 } | |
| 310 | |
| 311 if (w->glyph_cachels) | |
| 312 { | |
| 313 Dynarr_free (w->glyph_cachels); | |
| 314 w->glyph_cachels = 0; | |
| 315 } | |
| 316 } | |
| 317 | |
| 844 | 318 /* These caches map buffers to markers. They are key-weak so that entries |
| 319 remain around as long as the buffers do. */ | |
| 320 | |
| 321 static Lisp_Object | |
| 322 make_saved_buffer_point_cache (void) | |
| 323 { | |
| 324 return make_lisp_hash_table (20, HASH_TABLE_KEY_WEAK, HASH_TABLE_EQ); | |
| 325 } | |
| 326 | |
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327 DEFINE_NONDUMPABLE_LISP_OBJECT ("window", window, |
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328 mark_window, print_window, finalize_window, |
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329 0, 0, window_description, struct window); |
| 428 | 330 |
| 331 #define INIT_DISP_VARIABLE(field, initialization) \ | |
| 332 p->field[CURRENT_DISP] = initialization; \ | |
| 333 p->field[DESIRED_DISP] = initialization; \ | |
| 334 p->field[CMOTION_DISP] = initialization; | |
| 335 | |
| 336 /* We have an implicit assertion that the first two elements (default | |
| 337 and modeline faces) are always present in the face_element_cache. | |
| 338 Normally redisplay ensures this. However, it is possible for a | |
| 339 window to get created and functions which reference these values | |
| 340 called before redisplay works with the window for the first time. | |
| 341 All callers of allocate_window should therefore call | |
| 342 reset_face_cachels on the created window. We can't do it | |
| 343 here because the window must have its frame pointer set or | |
| 344 reset_face_cachels will fail. */ | |
| 345 Lisp_Object | |
| 346 allocate_window (void) | |
| 347 { | |
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348 Lisp_Object obj = ALLOC_LISP_OBJECT (window); |
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349 struct window *p = XWINDOW (obj); |
| 617 | 350 |
| 351 #define WINDOW_SLOT(slot) p->slot = Qnil; | |
| 352 #include "winslots.h" | |
| 353 | |
| 428 | 354 INIT_DISP_VARIABLE (start, Fmake_marker ()); |
| 355 INIT_DISP_VARIABLE (pointm, Fmake_marker ()); | |
| 356 p->sb_point = Fmake_marker (); | |
| 844 | 357 p->saved_point_cache = make_saved_buffer_point_cache (); |
| 358 p->saved_last_window_start_cache = make_saved_buffer_point_cache (); | |
| 428 | 359 p->use_time = Qzero; |
| 360 INIT_DISP_VARIABLE (last_modified, Qzero); | |
| 361 INIT_DISP_VARIABLE (last_point, Fmake_marker ()); | |
| 362 INIT_DISP_VARIABLE (last_start, Fmake_marker ()); | |
| 363 INIT_DISP_VARIABLE (last_facechange, Qzero); | |
| 364 p->face_cachels = Dynarr_new (face_cachel); | |
| 365 p->glyph_cachels = Dynarr_new (glyph_cachel); | |
| 366 p->line_start_cache = Dynarr_new (line_start_cache); | |
| 450 | 367 p->subwindow_instance_cache = make_image_instance_cache_hash_table (); |
| 368 | |
| 428 | 369 p->line_cache_last_updated = Qzero; |
| 442 | 370 |
| 428 | 371 p->windows_changed = 1; |
| 372 p->shadow_thickness_changed = 1; | |
| 373 | |
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374 return obj; |
| 428 | 375 } |
| 376 #undef INIT_DISP_VARIABLE | |
| 377 | |
| 617 | 378 /************************************************************************/ |
| 379 /* Window mirror structure */ | |
| 380 /************************************************************************/ | |
| 381 | |
| 428 | 382 /* |
| 383 * The redisplay structures used to be stored with each window. While | |
| 384 * they are logically something associated with frames they can't be | |
| 385 * stored there with a redisplay which handles variable height lines. | |
| 386 * Lines in horizontally split windows might not line up. So they get | |
| 387 * stored with the windows. | |
| 388 * | |
| 389 * The problem with this is window configurations. When restoring a | |
| 390 * window configuration it now becomes problematic to do an | |
| 391 * incremental redisplay. The solution is to store the redisplay | |
| 392 * structures with the frame as they should be but laid out in the | |
| 393 * same manner as the window structure. Thus is born the window | |
| 394 * mirror. | |
| 395 * | |
| 396 * It also becomes a convenient place to stick scrollbar instances | |
| 397 * since they extrapolate out to having the same problem described for | |
| 398 * the display structures. | |
| 399 */ | |
| 400 | |
| 617 | 401 /* NOTE: The window-mirror structure formerly was not a Lisp object, and |
| 402 marking was handled specially. I've gotten recurring crashes, however, | |
| 403 using the mouse wheel under Windows, where either the window mirror | |
| 404 accessed through a scrollbar instance, or the frame pointed to by that | |
| 405 window mirror, gets garbaged. Things are tricky under windows because | |
| 406 the scrollbar instances are stored in HWND-specific data. Furthermore, | |
| 407 we have scrollbar-instance caches to complicate things. Both of these | |
| 408 make it very difficult (for me at least, not being intimately familiar | |
| 409 with the redisplay code) to track exactly when and where a particular | |
| 410 window mirror or scrollbar instance has pointers to it, or whether a | |
| 411 window mirror might have a dead frame or buffer in it (i.e. not | |
| 412 necessarily gc-protected by being on a global list). By far the safest | |
| 413 thing, then, is to make both structures Lisp objects and not explicitly | |
| 414 xfree() them. This should make no practical difference in memory usage | |
| 415 because neither structure is created very often (only when windows are | |
| 416 created or deleted). --ben */ | |
| 417 | |
| 1204 | 418 static const struct memory_description window_mirror_description [] = { |
| 419 { XD_LISP_OBJECT, offsetof (struct window_mirror, frame) }, | |
| 420 { XD_LISP_OBJECT, offsetof (struct window_mirror, next) }, | |
| 421 { XD_LISP_OBJECT, offsetof (struct window_mirror, hchild) }, | |
| 422 { XD_LISP_OBJECT, offsetof (struct window_mirror, vchild) }, | |
| 423 | |
| 2367 | 424 { XD_BLOCK_PTR, offsetof (struct window_mirror, current_display_lines), |
| 2551 | 425 1, { &display_line_dynarr_description } }, |
| 2367 | 426 { XD_BLOCK_PTR, offsetof (struct window_mirror, desired_display_lines), |
| 2551 | 427 1, { &display_line_dynarr_description } }, |
| 1204 | 428 |
| 429 { XD_LISP_OBJECT, offsetof (struct window_mirror, buffer) }, | |
| 430 | |
| 431 #ifdef HAVE_SCROLLBARS | |
| 432 { XD_LISP_OBJECT, offsetof (struct window_mirror, | |
| 433 scrollbar_vertical_instance) }, | |
| 434 { XD_LISP_OBJECT, offsetof (struct window_mirror, | |
| 435 scrollbar_horizontal_instance) }, | |
| 436 #endif /* HAVE_SCROLLBARS */ | |
| 437 | |
| 934 | 438 { XD_END } |
| 439 }; | |
| 440 | |
| 617 | 441 static Lisp_Object |
| 442 mark_window_mirror (Lisp_Object obj) | |
| 443 { | |
| 444 struct window_mirror *mir = XWINDOW_MIRROR (obj); | |
| 445 | |
| 446 if (mir->current_display_lines) | |
| 447 mark_redisplay_structs (mir->current_display_lines); | |
| 448 if (mir->desired_display_lines) | |
| 449 mark_redisplay_structs (mir->desired_display_lines); | |
| 450 | |
| 451 if (mir->hchild) | |
| 452 mark_object (wrap_window_mirror (mir->hchild)); | |
| 453 if (mir->vchild) | |
| 454 mark_object (wrap_window_mirror (mir->vchild)); | |
| 455 | |
| 456 if (mir->frame) | |
| 457 mark_object (wrap_frame (mir->frame)); | |
| 458 if (mir->buffer) | |
| 459 mark_object (wrap_buffer (mir->buffer)); | |
| 460 | |
| 461 #ifdef HAVE_SCROLLBARS | |
| 462 if (mir->scrollbar_vertical_instance) | |
| 463 mark_object (wrap_scrollbar_instance (mir->scrollbar_vertical_instance)); | |
| 464 if (mir->scrollbar_horizontal_instance) | |
| 465 mark_object (wrap_scrollbar_instance (mir->scrollbar_horizontal_instance)); | |
| 466 #endif /* HAVE_SCROLLBARS */ | |
| 467 if (mir->next) | |
| 468 return wrap_window_mirror (mir->next); | |
| 469 else | |
| 470 return Qnil; | |
| 471 } | |
| 472 | |
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473 DEFINE_NONDUMPABLE_LISP_OBJECT ("window-mirror", window_mirror, |
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474 mark_window_mirror, 0, |
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475 0, 0, 0, window_mirror_description, |
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476 struct window_mirror); |
| 617 | 477 |
| 428 | 478 /* Create a new window mirror structure and associated redisplay |
| 479 structs. */ | |
| 480 static struct window_mirror * | |
| 481 new_window_mirror (struct frame *f) | |
| 482 { | |
|
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483 Lisp_Object obj = ALLOC_LISP_OBJECT (window_mirror); |
|
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484 struct window_mirror *t = XWINDOW_MIRROR (obj); |
| 428 | 485 |
| 486 t->frame = f; | |
| 487 t->current_display_lines = Dynarr_new (display_line); | |
| 488 t->desired_display_lines = Dynarr_new (display_line); | |
| 489 | |
| 490 return t; | |
| 491 } | |
| 492 | |
| 493 /* Synchronize the mirror structure with a given window structure. | |
| 494 This is normally called from update_frame_window_mirror with a | |
| 495 starting window of f->root_window. */ | |
| 496 static struct window_mirror * | |
| 497 update_mirror_internal (Lisp_Object win, struct window_mirror *mir) | |
| 498 { | |
| 499 if (NILP (win)) | |
| 500 { | |
| 501 if (mir) | |
| 502 { | |
| 503 free_window_mirror (mir); | |
| 504 mir = NULL; | |
| 505 } | |
| 506 return mir; | |
| 507 } | |
| 508 else | |
| 509 if (!mir) | |
| 510 mir = new_window_mirror (XFRAME (XWINDOW (win)->frame)); | |
| 511 | |
| 1204 | 512 mir->next = update_mirror_internal (XWINDOW (win)->next, mir->next); |
| 428 | 513 mir->hchild = update_mirror_internal (XWINDOW (win)->hchild, mir->hchild); |
| 514 mir->vchild = update_mirror_internal (XWINDOW (win)->vchild, mir->vchild); | |
| 515 | |
| 516 /* | |
| 517 * If the redisplay structs are not empty and the mirror has | |
| 518 * children, then this mirror structure was formerly being used for | |
| 519 * display but is no longer. Reset its current display structs so | |
| 520 * that redisplay doesn't accidentally think they are accurate if it | |
| 521 * is later used for display purposes once again. Also, mark the | |
| 522 * scrollbar instance as not active. | |
| 523 */ | |
| 524 if (mir->vchild || mir->hchild) | |
| 525 { | |
| 526 /* The redisplay structures are big. Leaving them around in | |
| 527 non-leaf windows can add up to a lot of wasted space. So | |
| 528 don't do it. */ | |
| 529 free_display_structs (mir); | |
| 530 mir->current_display_lines = Dynarr_new (display_line); | |
| 531 mir->desired_display_lines = Dynarr_new (display_line); | |
| 532 | |
| 533 #ifdef HAVE_SCROLLBARS | |
| 534 update_window_scrollbars (XWINDOW (win), mir, 0, 0); | |
| 535 #endif | |
| 536 mir->buffer = NULL; | |
| 537 } | |
| 538 | |
| 539 return mir; | |
| 540 } | |
| 541 | |
| 542 /* Given a window mirror, determine which real window it contains the | |
| 543 redisplay structures for. */ | |
| 544 static Lisp_Object | |
| 545 real_window_internal (Lisp_Object win, struct window_mirror *rmir, | |
| 546 struct window_mirror *mir) | |
| 547 { | |
| 548 for (; !NILP (win) && rmir ; win = XWINDOW (win)->next, rmir = rmir->next) | |
| 549 { | |
| 550 if (mir == rmir) | |
| 551 return win; | |
| 552 if (!NILP (XWINDOW (win)->vchild)) | |
| 553 { | |
| 554 Lisp_Object retval = | |
| 555 real_window_internal (XWINDOW (win)->vchild, rmir->vchild, mir); | |
| 556 if (!NILP (retval)) | |
| 557 return retval; | |
| 558 } | |
| 559 if (!NILP (XWINDOW (win)->hchild)) | |
| 560 { | |
| 561 Lisp_Object retval = | |
| 562 real_window_internal (XWINDOW (win)->hchild, rmir->hchild, mir); | |
| 563 if (!NILP (retval)) | |
| 564 return retval; | |
| 565 } | |
| 566 } | |
| 567 | |
| 568 return Qnil; | |
| 569 } | |
| 570 | |
| 571 /* Given a real window, find the mirror structure which contains its | |
| 572 redisplay structures. */ | |
| 573 static struct window_mirror * | |
| 574 find_window_mirror_internal (Lisp_Object win, struct window_mirror *rmir, | |
| 575 struct window *w) | |
| 576 { | |
| 577 for (; !NILP (win); win = XWINDOW (win)->next, rmir = rmir->next) | |
| 578 { | |
| 579 if (w == XWINDOW (win)) | |
| 580 return rmir; | |
| 581 | |
| 582 if (!NILP (XWINDOW (win)->vchild)) | |
| 583 { | |
| 584 struct window_mirror *retval = | |
| 585 find_window_mirror_internal (XWINDOW (win)->vchild, | |
| 586 rmir->vchild, w); | |
| 587 if (retval) return retval; | |
| 588 } | |
| 589 | |
| 590 if (!NILP (XWINDOW (win)->hchild)) | |
| 591 { | |
| 592 struct window_mirror *retval = | |
| 593 find_window_mirror_internal (XWINDOW (win)->hchild, | |
| 594 rmir->hchild, w); | |
| 595 if (retval) return retval; | |
| 596 } | |
| 597 } | |
| 598 | |
| 599 return 0; | |
| 600 } | |
| 601 | |
| 602 /* Update the mirror structure for the given frame. */ | |
| 603 void | |
| 604 update_frame_window_mirror (struct frame *f) | |
| 605 { | |
| 617 | 606 f->root_mirror = |
| 607 wrap_window_mirror (update_mirror_internal | |
| 608 (f->root_window, | |
| 609 NILP (f->root_mirror) ? 0 : | |
| 610 XWINDOW_MIRROR (f->root_mirror))); | |
| 428 | 611 f->mirror_dirty = 0; |
| 612 } | |
| 613 | |
| 614 /* Free a given mirror structure along with all of its children as | |
| 615 well as their associated display structures. */ | |
| 616 void | |
| 617 free_window_mirror (struct window_mirror *mir) | |
| 618 { | |
| 619 while (mir) | |
| 620 { | |
| 621 if (mir->hchild) free_window_mirror (mir->hchild); | |
| 622 if (mir->vchild) free_window_mirror (mir->vchild); | |
| 623 #ifdef HAVE_SCROLLBARS | |
| 624 release_window_mirror_scrollbars (mir); | |
| 625 #endif | |
| 626 free_display_structs (mir); | |
| 627 mir = mir->next; | |
| 617 | 628 /* not worth calling free_managed_lcrecord() -- window mirrors |
| 629 are not created that frequently and it's dangerous. we don't | |
| 630 know for sure that there aren't other pointers around -- e.g. | |
| 631 in a scrollbar instance. */ | |
| 428 | 632 } |
| 633 } | |
| 634 | |
| 635 /* Given a mirror structure, return the window it mirrors. Calls | |
| 636 real_window_internal to do most of the work. */ | |
| 637 Lisp_Object | |
| 638 real_window (struct window_mirror *mir, int no_abort) | |
| 639 { | |
| 617 | 640 Lisp_Object retval = |
| 641 real_window_internal (mir->frame->root_window, | |
| 642 XWINDOW_MIRROR (mir->frame->root_mirror), mir); | |
| 428 | 643 if (NILP (retval) && !no_abort) |
| 2500 | 644 ABORT (); |
| 428 | 645 |
| 646 return retval; | |
| 647 } | |
| 648 | |
| 649 /* Given a real window, return its mirror structure. Calls | |
| 650 find_window_mirror_internal to do all of the work. */ | |
| 651 struct window_mirror * | |
| 652 find_window_mirror (struct window *w) | |
| 653 { | |
| 654 struct frame *f = XFRAME (w->frame); | |
| 655 if (f->mirror_dirty) | |
| 656 update_frame_window_mirror (f); | |
| 617 | 657 return find_window_mirror_internal (f->root_window, |
| 658 XWINDOW_MIRROR (f->root_mirror), w); | |
| 428 | 659 } |
| 660 | |
| 661 /***************************************************************************** | |
| 662 find_window_by_pixel_pos | |
| 663 | |
| 664 Given a pixel position relative to a frame, find the window at that | |
| 665 position. | |
| 666 ****************************************************************************/ | |
| 667 struct window * | |
| 668 find_window_by_pixel_pos (int pix_x, int pix_y, Lisp_Object win) | |
| 669 { | |
| 670 if (NILP (win)) | |
| 671 return 0; | |
| 672 | |
| 673 for (; !NILP (win); win = XWINDOW (win)->next) | |
| 674 { | |
| 675 struct window *w; | |
| 676 | |
| 677 if (!NILP (XWINDOW (win)->vchild)) | |
| 678 { | |
| 679 w = find_window_by_pixel_pos (pix_x, pix_y, XWINDOW (win)->vchild); | |
| 680 if (w) return w; | |
| 681 } | |
| 682 if (!NILP (XWINDOW (win)->hchild)) | |
| 683 { | |
| 684 w = find_window_by_pixel_pos (pix_x, pix_y, XWINDOW (win)->hchild); | |
| 685 if (w) return w; | |
| 686 } | |
| 687 w = XWINDOW (win); | |
| 688 if (pix_x >= WINDOW_LEFT (w) | |
| 689 && pix_x <= WINDOW_RIGHT (w) | |
| 690 && pix_y >= WINDOW_TOP (w) | |
| 691 && pix_y <= WINDOW_BOTTOM (w)) | |
| 692 return w; | |
| 693 } | |
| 694 return NULL; | |
| 695 } | |
| 696 | |
| 697 /* Return a pointer to the display structures for the given window. */ | |
| 698 display_line_dynarr * | |
| 699 window_display_lines (struct window *w, int which) | |
| 700 { | |
| 701 struct window_mirror *t; | |
| 702 | |
| 703 if (XFRAME (w->frame)->mirror_dirty) | |
| 704 update_frame_window_mirror (XFRAME (w->frame)); | |
| 705 t = find_window_mirror (w); | |
| 706 if (!t) | |
| 2500 | 707 ABORT (); |
| 428 | 708 |
| 709 if (which == CURRENT_DISP) | |
| 710 return t->current_display_lines; | |
| 711 else if (which == DESIRED_DISP) | |
| 712 return t->desired_display_lines; | |
| 713 else if (which == CMOTION_DISP) | |
| 714 /* The CMOTION_DISP display lines are global. */ | |
| 715 return cmotion_display_lines; | |
| 716 else | |
| 2500 | 717 ABORT (); |
| 428 | 718 |
| 719 return 0; /* shut up compiler */ | |
| 720 } | |
| 721 | |
| 722 struct buffer * | |
| 723 window_display_buffer (struct window *w) | |
| 724 { | |
| 725 struct window_mirror *t; | |
| 726 | |
| 727 if (XFRAME (w->frame)->mirror_dirty) | |
| 728 update_frame_window_mirror (XFRAME (w->frame)); | |
| 729 t = find_window_mirror (w); | |
| 730 if (!t) | |
| 2500 | 731 ABORT (); |
| 428 | 732 |
| 733 return t->buffer; | |
| 734 } | |
| 735 | |
| 736 void | |
| 737 set_window_display_buffer (struct window *w, struct buffer *b) | |
| 738 { | |
| 739 struct window_mirror *t; | |
| 740 | |
| 741 if (XFRAME (w->frame)->mirror_dirty) | |
| 742 update_frame_window_mirror (XFRAME (w->frame)); | |
| 743 t = find_window_mirror (w); | |
| 744 if (!t) | |
| 2500 | 745 ABORT (); |
| 428 | 746 |
| 747 t->buffer = b; | |
| 748 } | |
| 749 | |
| 750 | |
| 751 /* Determining a window's position based solely on its pixel | |
| 752 positioning doesn't work. Instead, we do it the intelligent way, | |
| 753 by checking its positioning in the window hierarchy. */ | |
| 754 int | |
| 755 window_is_leftmost (struct window *w) | |
| 756 { | |
| 757 Lisp_Object parent, current_ancestor, window; | |
| 758 | |
| 793 | 759 window = wrap_window (w); |
| 428 | 760 |
| 761 parent = XWINDOW (window)->parent; | |
| 762 current_ancestor = window; | |
| 763 | |
| 764 while (!NILP (parent)) | |
| 765 { | |
| 766 if (!NILP (XWINDOW (parent)->hchild) && | |
| 767 !EQ (XWINDOW (parent)->hchild, current_ancestor)) | |
| 768 return 0; | |
| 769 | |
| 770 current_ancestor = parent; | |
| 771 parent = XWINDOW (parent)->parent; | |
| 772 } | |
| 773 | |
| 774 return 1; | |
| 775 } | |
| 776 | |
| 777 int | |
| 778 window_is_rightmost (struct window *w) | |
| 779 { | |
| 780 Lisp_Object parent, current_ancestor, window; | |
| 781 | |
| 793 | 782 window = wrap_window (w); |
| 428 | 783 |
| 784 parent = XWINDOW (window)->parent; | |
| 785 current_ancestor = window; | |
| 786 | |
| 787 while (!NILP (parent)) | |
| 788 { | |
| 789 if (!NILP (XWINDOW (parent)->hchild) | |
| 790 && !NILP (XWINDOW (current_ancestor)->next)) | |
| 791 return 0; | |
| 792 | |
| 793 current_ancestor = parent; | |
| 794 parent = XWINDOW (parent)->parent; | |
| 795 } | |
| 796 | |
| 797 return 1; | |
| 798 } | |
| 799 | |
| 800 static int | |
| 801 window_full_width_p (struct window *w) | |
| 802 { | |
| 803 return window_is_leftmost (w) && window_is_rightmost (w); | |
| 804 } | |
| 805 | |
| 806 int | |
| 807 window_is_highest (struct window *w) | |
| 808 { | |
| 809 Lisp_Object parent, current_ancestor, window; | |
| 810 | |
| 793 | 811 window = wrap_window (w); |
| 428 | 812 |
| 813 parent = XWINDOW (window)->parent; | |
| 814 current_ancestor = window; | |
| 815 | |
| 816 while (!NILP (parent)) | |
| 817 { | |
| 818 if (!NILP (XWINDOW (parent)->vchild) && | |
| 819 !EQ (XWINDOW (parent)->vchild, current_ancestor)) | |
| 820 return 0; | |
| 821 | |
| 822 current_ancestor = parent; | |
| 823 parent = XWINDOW (parent)->parent; | |
| 824 } | |
| 825 | |
| 826 /* This is really to catch the minibuffer but we make it generic in | |
| 827 case we ever change things around to let the minibuffer be on top. */ | |
| 828 if (NILP (XWINDOW (current_ancestor)->prev)) | |
| 829 return 1; | |
| 830 else | |
| 831 return 0; | |
| 832 } | |
| 833 | |
| 834 int | |
| 835 window_is_lowest (struct window *w) | |
| 836 { | |
| 837 Lisp_Object parent, current_ancestor, window; | |
| 838 | |
| 793 | 839 window = wrap_window (w); |
| 428 | 840 |
| 841 parent = XWINDOW (window)->parent; | |
| 842 current_ancestor = window; | |
| 843 | |
| 844 while (!NILP (parent)) | |
| 845 { | |
| 846 if (!NILP (XWINDOW (parent)->vchild) | |
| 847 && !NILP (XWINDOW (current_ancestor)->next)) | |
| 848 return 0; | |
| 849 | |
| 850 current_ancestor = parent; | |
| 851 parent = XWINDOW (parent)->parent; | |
| 852 } | |
| 853 | |
| 854 return 1; | |
| 855 } | |
| 856 | |
| 857 #if 0 /* not currently used */ | |
| 858 | |
| 859 static int | |
| 860 window_full_height_p (struct window *w) | |
| 861 { | |
| 862 return window_is_highest (w) && window_is_lowest (w); | |
| 863 } | |
| 864 | |
| 865 #endif | |
| 866 | |
| 867 int | |
| 868 window_truncation_on (struct window *w) | |
| 869 { | |
| 870 /* Minibuffer windows are never truncated. | |
| 440 | 871 #### is this the right way ? */ |
| 428 | 872 if (MINI_WINDOW_P (w)) |
| 873 return 0; | |
| 874 | |
| 875 /* Horizontally scrolled windows are truncated. */ | |
| 876 if (w->hscroll) | |
| 877 return 1; | |
| 878 | |
| 879 /* If truncate_partial_width_windows is true and the window is not | |
| 880 the full width of the frame it is truncated. */ | |
| 707 | 881 if (!NILP (symbol_value_in_buffer (Qtruncate_partial_width_windows, |
| 882 w->buffer)) | |
| 428 | 883 && !(window_is_leftmost (w) && window_is_rightmost (w))) |
| 884 return 1; | |
| 885 | |
| 886 /* If the window's buffer's value of truncate_lines is non-nil, then | |
| 887 the window is truncated. */ | |
| 888 if (!NILP (XBUFFER (w->buffer)->truncate_lines)) | |
| 889 return 1; | |
| 890 | |
| 891 return 0; | |
| 892 } | |
| 893 | |
| 894 DEFUN ("window-truncated-p", Fwindow_truncated_p, 0, 1, 0, /* | |
| 442 | 895 Returns non-nil if text in the window is truncated. |
| 428 | 896 */ |
| 897 (window)) | |
| 898 { | |
| 899 struct window *w = decode_window (window); | |
| 900 | |
| 901 return window_truncation_on (w) ? Qt : Qnil; | |
| 902 } | |
| 903 | |
| 904 | |
| 905 static int | |
| 906 have_undivided_common_edge (struct window *w_right, void *closure) | |
| 907 { | |
| 908 struct window *w_left = (struct window *) closure; | |
| 909 return (WINDOW_RIGHT (w_left) == WINDOW_LEFT (w_right) | |
| 910 && WINDOW_TOP (w_left) < WINDOW_BOTTOM (w_right) | |
| 911 && WINDOW_TOP (w_right) < WINDOW_BOTTOM (w_left) | |
| 912 #ifdef HAVE_SCROLLBARS | |
| 913 && (NILP (w_right->scrollbar_on_left_p) | |
| 914 || NILP (w_right->vertical_scrollbar_visible_p) | |
| 915 || ZEROP (w_right->scrollbar_width)) | |
| 916 #endif | |
| 917 ); | |
| 918 } | |
| 919 | |
| 920 static int | |
| 921 window_needs_vertical_divider_1 (struct window *w) | |
| 922 { | |
| 923 /* Never if we're on the right */ | |
| 924 if (window_is_rightmost (w)) | |
| 925 return 0; | |
| 926 | |
| 927 /* Always if draggable */ | |
| 928 if (!NILP (w->vertical_divider_always_visible_p)) | |
| 929 return 1; | |
| 930 | |
| 931 #ifdef HAVE_SCROLLBARS | |
| 932 /* Our right scrollbar is enough to separate us at the right */ | |
| 933 if (NILP (w->scrollbar_on_left_p) | |
| 934 && !NILP (w->vertical_scrollbar_visible_p) | |
| 935 && !ZEROP (w->scrollbar_width)) | |
| 936 return 0; | |
| 937 #endif | |
| 938 | |
| 939 /* Ok. to determine whether we need a divider on the left, we must | |
| 940 check that our right neighbor windows have scrollbars on their | |
| 941 left sides. We must check all such windows which have common | |
| 942 left edge with our window's right edge. */ | |
| 943 return map_windows (XFRAME (WINDOW_FRAME (w)), | |
| 944 have_undivided_common_edge, (void*)w); | |
| 945 } | |
| 946 | |
| 947 int | |
| 948 window_needs_vertical_divider (struct window *w) | |
| 949 { | |
| 950 if (!w->need_vertical_divider_valid_p) | |
| 951 { | |
| 952 w->need_vertical_divider_p = | |
| 953 window_needs_vertical_divider_1 (w); | |
| 954 w->need_vertical_divider_valid_p = 1; | |
| 955 } | |
| 956 return w->need_vertical_divider_p; | |
| 957 } | |
| 958 | |
| 959 /* Called from invalidate_vertical_divider_cache_in_frame */ | |
| 960 int | |
| 961 invalidate_vertical_divider_cache_in_window (struct window *w, | |
| 2286 | 962 void *UNUSED (unused)) |
| 428 | 963 { |
| 964 w->need_vertical_divider_valid_p = 0; | |
| 965 return 0; | |
| 966 } | |
| 967 | |
| 968 /* Calculate width of vertical divider, including its shadows | |
| 969 and spacing. The returned value is effectively the distance | |
| 970 between adjacent window edges. This function does not check | |
| 971 whether a window needs a vertical divider, so the returned | |
| 972 value is a "theoretical" one */ | |
| 973 int | |
| 974 window_divider_width (struct window *w) | |
| 975 { | |
| 976 /* the shadow thickness can be negative. This means that the divider | |
| 977 will have a depressed look */ | |
| 978 | |
| 979 if (FRAME_WIN_P (XFRAME (WINDOW_FRAME (w)))) | |
| 980 return | |
| 981 XINT (w->vertical_divider_line_width) | |
| 982 + 2 * XINT (w->vertical_divider_spacing) | |
| 983 + 2 * abs (XINT (w->vertical_divider_shadow_thickness)); | |
| 984 else | |
| 985 return XINT (w->vertical_divider_line_width) == 0 ? 0 : 1; | |
| 986 } | |
| 987 | |
| 988 int | |
| 989 window_scrollbar_width (struct window *w) | |
| 990 { | |
| 991 #ifdef HAVE_SCROLLBARS | |
| 992 if (!WINDOW_WIN_P (w) | |
| 993 || MINI_WINDOW_P (w) | |
| 994 || NILP (w->buffer) | |
| 995 || NILP (w->vertical_scrollbar_visible_p)) | |
| 996 /* #### when does NILP (w->buffer) happen? */ | |
| 997 return 0; | |
| 998 | |
| 999 return XINT (w->scrollbar_width); | |
| 1000 #else | |
| 1001 return 0; | |
| 1002 #endif /* HAVE_SCROLLBARS */ | |
| 1003 } | |
| 1004 | |
| 1005 /* Horizontal scrollbars are only active on windows with truncation | |
| 1006 turned on. */ | |
| 1007 int | |
| 1008 window_scrollbar_height (struct window *w) | |
| 1009 { | |
| 1010 #ifdef HAVE_SCROLLBARS | |
| 1011 if (!WINDOW_WIN_P (w) | |
| 1012 || MINI_WINDOW_P (w) | |
| 1013 || NILP (w->buffer) | |
| 1014 || NILP (w->horizontal_scrollbar_visible_p) | |
| 1015 || !window_truncation_on (w)) | |
| 1016 return 0; | |
| 1017 | |
| 1018 return XINT (w->scrollbar_height); | |
| 1019 #else | |
| 1020 return 0; | |
| 1021 #endif /* HAVE_SCROLLBARS */ | |
| 1022 } | |
| 1023 | |
| 1024 int | |
| 1025 window_modeline_height (struct window *w) | |
| 1026 { | |
| 1027 struct frame *f = XFRAME (w->frame); | |
| 1028 int modeline_height; | |
| 1029 | |
| 1030 if (MINI_WINDOW_P (w) || NILP (w->buffer)) | |
| 1031 { | |
| 1032 modeline_height = 0; | |
| 1033 } | |
| 1034 else if (!WINDOW_HAS_MODELINE_P (w)) | |
| 1035 { | |
| 1036 if (window_scrollbar_height (w)) | |
| 1037 modeline_height = 0; | |
| 1038 else | |
| 1039 { | |
| 1040 modeline_height = FRAMEMETH (f, divider_height, ()); | |
| 1041 | |
| 1042 if (!EQ (Qzero, w->modeline_shadow_thickness) && FRAME_WIN_P (f)) | |
| 1043 modeline_height += (2 * MODELINE_SHADOW_THICKNESS (w)); | |
| 1044 } | |
| 1045 } | |
| 1046 else | |
| 1047 { | |
| 1048 if (noninteractive) | |
| 1049 modeline_height = 0; | |
| 1050 else | |
| 1051 { | |
| 1052 display_line_dynarr *dla; | |
| 1053 | |
| 1054 /* We don't force a regeneration of the modeline here. | |
| 1055 Instead it is now a precondition that any function calling | |
| 1056 this should make sure that one of these structures is | |
| 1057 up-to-date. In practice this only affects two internal | |
| 1058 redisplay functions, regenerate_window and | |
| 1059 regenerate_window_point_center. */ | |
| 1060 /* We check DESIRED_DISP because if it is valid it is more | |
| 1061 up-to-date than CURRENT_DISP. For calls to this outside | |
| 1062 of redisplay it doesn't matter which structure we check | |
| 1063 since there is a redisplay condition that these | |
| 1064 structures be identical outside of redisplay. */ | |
| 1065 dla = window_display_lines (w, DESIRED_DISP); | |
| 1066 if (dla && Dynarr_length (dla) && Dynarr_atp (dla, 0)->modeline) | |
| 1067 modeline_height = (Dynarr_atp (dla, 0)->ascent + | |
| 1068 Dynarr_atp (dla, 0)->descent); | |
| 1069 else | |
| 1070 { | |
| 1071 dla = window_display_lines (w, CURRENT_DISP); | |
| 1072 if (dla && Dynarr_length (dla) && Dynarr_atp (dla, 0)->modeline) | |
| 1073 modeline_height = (Dynarr_atp (dla, 0)->ascent + | |
| 1074 Dynarr_atp (dla, 0)->descent); | |
| 1075 else | |
| 1076 /* This should be an abort except I'm not yet 100% | |
| 1077 confident that it won't ever get hit (though I | |
| 1078 haven't been able to trigger it). It is extremely | |
| 1079 unlikely to cause any noticeable problem and even if | |
| 1080 it does it will be a minor display glitch. */ | |
| 1081 /* #### Bullshit alert. It does get hit and it causes | |
| 1082 noticeable glitches. real_current_modeline_height | |
| 1083 is a kludge to fix this for 19.14. */ | |
| 1084 modeline_height = real_current_modeline_height (w); | |
| 1085 } | |
| 1086 | |
| 1087 if (!EQ (Qzero, w->modeline_shadow_thickness) && FRAME_WIN_P (f)) | |
| 1088 modeline_height += (2 * MODELINE_SHADOW_THICKNESS (w)); | |
| 1089 } | |
| 1090 } | |
| 1091 | |
| 1092 return modeline_height; | |
| 1093 } | |
| 1094 | |
| 1095 /***************************************************************************** | |
| 1096 margin_width_internal | |
| 1097 | |
| 1098 For a given window, return the width in pixels of the specified margin. | |
| 1099 ****************************************************************************/ | |
| 1100 static int | |
| 1101 margin_width_internal (struct window *w, int left_margin) | |
| 1102 { | |
| 1103 int window_cwidth = window_char_width (w, 1); | |
| 1104 int margin_cwidth; | |
| 1105 int font_width; | |
| 1106 Lisp_Object window; | |
| 1107 | |
| 1108 /* We might be getting called on a non-leaf. */ | |
| 1109 if (NILP (w->buffer)) | |
| 1110 return 0; | |
| 1111 | |
| 1112 /* The minibuffer never has margins. */ | |
| 1113 if (MINI_WINDOW_P (w)) | |
| 1114 return 0; | |
| 1115 | |
| 793 | 1116 window = wrap_window (w); |
| 428 | 1117 margin_cwidth = (left_margin ? XINT (w->left_margin_width) : |
| 1118 XINT (w->right_margin_width)); | |
| 1119 | |
| 1120 default_face_height_and_width (window, 0, &font_width); | |
| 1121 | |
| 1122 /* The left margin takes precedence over the right margin so we | |
| 1123 subtract its width from the space available for the right | |
| 1124 margin. */ | |
| 1125 if (!left_margin) | |
| 1126 window_cwidth -= XINT (w->left_margin_width); | |
| 1127 | |
| 1128 /* The margin cannot be wider than the window is. We allow the | |
| 1129 value to be bigger since it is possible for the user to enlarge | |
| 1130 the window such that the left margin value would no longer be too | |
| 1131 big, but we won't return a value that is larger. */ | |
| 1132 if (margin_cwidth > window_cwidth) | |
| 1133 margin_cwidth = window_cwidth; | |
| 1134 | |
| 1135 /* At the user level the margin is always specified in characters. | |
| 1136 Internally however it is manipulated in terms of pixels. */ | |
| 1137 return margin_cwidth * font_width; | |
| 1138 } | |
| 1139 | |
| 1140 int | |
| 1141 window_left_margin_width (struct window *w) | |
| 1142 { | |
| 1143 return margin_width_internal (w, 1); | |
| 1144 } | |
| 1145 | |
| 1146 int | |
| 1147 window_right_margin_width (struct window *w) | |
| 1148 { | |
| 1149 return margin_width_internal (w, 0); | |
| 1150 } | |
| 1151 | |
| 1152 /***************************************************************************** | |
| 1153 Window Gutters | |
| 1154 | |
| 1155 The gutters of a window are those areas in the boundary defined by | |
| 1156 w->pixel_top, w->pixel_left, w->pixel_height and w->pixel_width which | |
| 1157 do not contain text. Items which may be in the gutters include | |
| 1158 scrollbars, toolbars and modelines. The margin areas are not | |
| 1159 included. This is an exception made because redisplay special cases | |
| 1160 the handling of those areas in many places in such a way that | |
| 1161 including them in the gutter area would make life difficult. | |
| 1162 | |
| 1163 The size functions refer to height for the bottom and top gutters and | |
| 1164 width for the left and right gutters. The starting position | |
| 1165 functions refer to the Y coord for bottom and top gutters and the X | |
| 1166 coord for left and right gutters. All starting positions are | |
| 1167 relative to the frame, not the window. | |
| 1168 ****************************************************************************/ | |
| 1169 | |
| 442 | 1170 static int |
| 1171 window_top_window_gutter_height (struct window *w) | |
| 1172 { | |
| 428 | 1173 if (!NILP (w->hchild) || !NILP (w->vchild)) |
| 1174 return 0; | |
| 1175 | |
| 1176 #ifdef HAVE_SCROLLBARS | |
| 1177 if (!NILP (w->scrollbar_on_top_p)) | |
| 442 | 1178 return window_scrollbar_height (w); |
| 428 | 1179 else |
| 1180 #endif | |
| 442 | 1181 return 0; |
| 428 | 1182 } |
| 1183 | |
| 1184 int | |
| 442 | 1185 window_top_gutter_height (struct window *w) |
| 1186 { | |
| 1187 return window_top_window_gutter_height (w); | |
| 1188 } | |
| 1189 | |
| 1190 static int | |
| 1191 window_bottom_window_gutter_height (struct window *w) | |
| 1192 { | |
| 1193 int gutter; | |
| 428 | 1194 |
| 1195 if (!NILP (w->hchild) || !NILP (w->vchild)) | |
| 1196 return 0; | |
| 1197 | |
| 442 | 1198 gutter = window_modeline_height (w); |
| 428 | 1199 |
| 1200 #ifdef HAVE_SCROLLBARS | |
| 1201 if (NILP (w->scrollbar_on_top_p)) | |
| 1202 return window_scrollbar_height (w) + gutter; | |
| 1203 else | |
| 1204 #endif | |
| 1205 return gutter; | |
| 1206 } | |
| 1207 | |
| 1208 int | |
| 442 | 1209 window_bottom_gutter_height (struct window *w) |
| 1210 { | |
| 1211 return window_bottom_window_gutter_height (w); | |
| 1212 } | |
| 1213 | |
| 1214 static int | |
| 1215 window_left_window_gutter_width (struct window *w, int modeline) | |
| 1216 { | |
| 428 | 1217 if (!NILP (w->hchild) || !NILP (w->vchild)) |
| 1218 return 0; | |
| 1219 | |
| 1220 #ifdef HAVE_SCROLLBARS | |
| 1221 if (!modeline && !NILP (w->scrollbar_on_left_p)) | |
| 442 | 1222 return window_scrollbar_width (w); |
| 428 | 1223 #endif |
| 1224 | |
| 442 | 1225 return 0; |
| 428 | 1226 } |
| 1227 | |
| 1228 int | |
| 442 | 1229 window_left_gutter_width (struct window *w, int modeline) |
| 1230 { | |
| 1231 return window_left_window_gutter_width (w, modeline); | |
| 1232 } | |
| 1233 | |
| 1234 static int | |
| 1235 window_right_window_gutter_width (struct window *w, int modeline) | |
| 1236 { | |
| 1237 int gutter = 0; | |
| 428 | 1238 |
| 1239 if (!NILP (w->hchild) || !NILP (w->vchild)) | |
| 1240 return 0; | |
| 1241 | |
| 1242 #ifdef HAVE_SCROLLBARS | |
| 1243 if (!modeline && NILP (w->scrollbar_on_left_p)) | |
| 1244 gutter += window_scrollbar_width (w); | |
| 1245 #endif | |
| 1246 | |
| 1247 if (window_needs_vertical_divider (w)) | |
| 1248 gutter += window_divider_width (w); | |
| 1249 | |
| 1250 return gutter; | |
| 1251 } | |
| 1252 | |
| 442 | 1253 int |
| 1254 window_right_gutter_width (struct window *w, int modeline) | |
| 1255 { | |
| 1256 return window_right_window_gutter_width (w, modeline); | |
| 1257 } | |
| 1258 | |
| 1259 static int | |
| 1260 window_pixel_height (struct window* w) | |
| 1261 { | |
| 1262 return WINDOW_HEIGHT (w); | |
| 1263 } | |
| 1264 | |
| 428 | 1265 |
| 1266 DEFUN ("windowp", Fwindowp, 1, 1, 0, /* | |
| 444 | 1267 Return t if OBJECT is a window. |
| 428 | 1268 */ |
| 444 | 1269 (object)) |
| 1270 { | |
| 1271 return WINDOWP (object) ? Qt : Qnil; | |
| 428 | 1272 } |
| 1273 | |
| 1274 DEFUN ("window-live-p", Fwindow_live_p, 1, 1, 0, /* | |
| 444 | 1275 Return t if OBJECT is a window which is currently visible. |
| 428 | 1276 */ |
| 444 | 1277 (object)) |
| 1278 { | |
| 1279 return WINDOWP (object) && WINDOW_LIVE_P (XWINDOW (object)) | |
| 1280 ? Qt : Qnil; | |
| 428 | 1281 } |
| 1282 | |
| 1283 DEFUN ("selected-window", Fselected_window, 0, 1, 0, /* | |
| 1284 Return the window that the cursor now appears in and commands apply to. | |
| 1285 If the optional argument CON-DEV-OR-FRAME is specified and is a frame, return | |
| 1286 the selected window used by that frame. If CON-DEV-OR-FRAME is a device, | |
| 1287 then the selected frame on that device will be used. If CON-DEV-OR-FRAME | |
| 1288 is a console, the selected frame on that console's selected device will | |
| 1289 be used. Otherwise, the selected frame is used. | |
| 1290 */ | |
| 1291 (con_dev_or_frame)) | |
| 1292 { | |
| 1293 if (NILP (con_dev_or_frame) && NILP (Fselected_device (Qnil))) | |
| 1294 return Qnil; /* happens at startup */ | |
| 1295 | |
| 1296 { | |
| 1297 struct frame *f = decode_frame_or_selected (con_dev_or_frame); | |
| 1298 return FRAME_SELECTED_WINDOW (f); | |
| 1299 } | |
| 1300 } | |
| 1301 | |
| 1302 DEFUN ("last-nonminibuf-window", Flast_nonminibuf_window, 0, 1, 0, /* | |
| 1303 Return the last selected window that is not a minibuffer window. | |
| 1304 If the optional argument CON-DEV-OR-FRAME is specified and is a frame, | |
| 1305 return the last non-minibuffer window used by that frame. If | |
| 1306 CON-DEV-OR-FRAME is a device, then the selected frame on that device | |
| 1307 will be used. If CON-DEV-OR-FRAME is a console, the selected frame on | |
| 1308 that console's selected device will be used. Otherwise, the selected | |
| 1309 frame is used. | |
| 1310 */ | |
| 1311 (con_dev_or_frame)) | |
| 1312 { | |
| 1313 if (NILP (con_dev_or_frame) && NILP (Fselected_device (Qnil))) | |
| 1314 return Qnil; /* happens at startup */ | |
| 1315 | |
| 1316 { | |
| 1317 struct frame *f = decode_frame_or_selected (con_dev_or_frame); | |
| 1318 return FRAME_LAST_NONMINIBUF_WINDOW (f); | |
| 1319 } | |
| 1320 } | |
| 1321 | |
| 1322 DEFUN ("minibuffer-window", Fminibuffer_window, 0, 1, 0, /* | |
| 1323 Return the window used now for minibuffers. | |
| 1324 If the optional argument CON-DEV-OR-FRAME is specified and is a frame, return | |
| 1325 the minibuffer window used by that frame. If CON-DEV-OR-FRAME is a device, | |
| 1326 then the selected frame on that device will be used. If CON-DEV-OR-FRAME | |
| 1327 is a console, the selected frame on that console's selected device will | |
| 1328 be used. Otherwise, the selected frame is used. | |
| 1329 */ | |
| 1330 (con_dev_or_frame)) | |
| 1331 { | |
| 1332 return FRAME_MINIBUF_WINDOW (decode_frame_or_selected (con_dev_or_frame)); | |
| 1333 } | |
| 1334 | |
| 438 | 1335 DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, 0, 1, 0, /* |
| 428 | 1336 Return non-nil if WINDOW is a minibuffer window. |
| 1337 */ | |
| 1338 (window)) | |
| 1339 { | |
| 1340 return MINI_WINDOW_P (decode_window (window)) ? Qt : Qnil; | |
| 1341 } | |
| 1342 | |
| 1343 DEFUN ("window-first-hchild", Fwindow_first_hchild, 1, 1, 0, /* | |
| 1344 Return the first horizontal child of WINDOW, or nil. | |
| 1345 */ | |
| 1346 (window)) | |
| 1347 { | |
| 1348 return decode_window (window)->hchild; | |
| 1349 } | |
| 1350 | |
| 1351 DEFUN ("window-first-vchild", Fwindow_first_vchild, 1, 1, 0, /* | |
| 1352 Return the first vertical child of WINDOW, or nil. | |
| 1353 */ | |
| 1354 (window)) | |
| 1355 { | |
| 1356 return decode_window (window)->vchild; | |
| 1357 } | |
| 1358 | |
| 1359 DEFUN ("window-next-child", Fwindow_next_child, 1, 1, 0, /* | |
| 1360 Return the next window on the same level as WINDOW, or nil. | |
| 1361 */ | |
| 1362 (window)) | |
| 1363 { | |
| 1364 return decode_window (window)->next; | |
| 1365 } | |
| 1366 | |
| 1367 DEFUN ("window-previous-child", Fwindow_previous_child, 1, 1, 0, /* | |
| 1368 Return the previous window on the same level as WINDOW, or nil. | |
| 1369 */ | |
| 1370 (window)) | |
| 1371 { | |
| 1372 return decode_window (window)->prev; | |
| 1373 } | |
| 1374 | |
| 1375 DEFUN ("window-parent", Fwindow_parent, 1, 1, 0, /* | |
| 1376 Return the parent of WINDOW, or nil. | |
| 1377 */ | |
| 1378 (window)) | |
| 1379 { | |
| 1380 return decode_window (window)->parent; | |
| 1381 } | |
| 1382 | |
| 1383 DEFUN ("window-lowest-p", Fwindow_lowest_p, 1, 1, 0, /* | |
| 1384 Return non-nil if WINDOW is along the bottom of its frame. | |
| 1385 */ | |
| 1386 (window)) | |
| 1387 { | |
| 1388 return window_is_lowest (decode_window (window)) ? Qt : Qnil; | |
| 1389 } | |
| 1390 | |
| 1391 DEFUN ("window-highest-p", Fwindow_highest_p, 1, 1, 0, /* | |
| 1392 Return non-nil if WINDOW is along the top of its frame. | |
| 1393 */ | |
| 1394 (window)) | |
| 1395 { | |
| 1396 return window_is_highest (decode_window (window)) ? Qt : Qnil; | |
| 1397 } | |
| 1398 | |
| 1399 DEFUN ("window-leftmost-p", Fwindow_leftmost_p, 1, 1, 0, /* | |
| 1400 Return non-nil if WINDOW is along the left edge of its frame. | |
| 1401 */ | |
| 1402 (window)) | |
| 1403 { | |
| 1404 return window_is_leftmost (decode_window (window)) ? Qt : Qnil; | |
| 1405 } | |
| 1406 | |
| 1407 DEFUN ("window-rightmost-p", Fwindow_rightmost_p, 1, 1, 0, /* | |
| 1408 Return non-nil if WINDOW is along the right edge of its frame. | |
| 1409 */ | |
| 1410 (window)) | |
| 1411 { | |
| 1412 return window_is_rightmost (decode_window (window)) ? Qt : Qnil; | |
| 1413 } | |
| 1414 | |
| 1708 | 1415 DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, 0, 3, 0, /* |
| 1416 Returns t if position POS is currently on the frame in WINDOW. | |
| 428 | 1417 Returns nil if that position is scrolled vertically out of view. |
| 1708 | 1418 If a character is only partially visible, nil is returned, unless the |
| 1419 optional argument PARTIALLY is non-nil. | |
| 428 | 1420 POS defaults to point in WINDOW's buffer; WINDOW, to the selected window. |
| 1421 */ | |
| 1708 | 1422 (pos, window, partially)) |
| 428 | 1423 { |
| 1424 struct window *w = decode_window (window); | |
| 665 | 1425 Charbpos top = marker_position (w->start[CURRENT_DISP]); |
| 1426 Charbpos posint; | |
| 428 | 1427 struct buffer *buf = XBUFFER (w->buffer); |
| 1428 | |
| 1429 if (NILP (pos)) | |
| 1430 posint = BUF_PT (buf); | |
| 1431 else | |
| 1432 { | |
| 1433 CHECK_INT_COERCE_MARKER (pos); | |
| 1434 posint = XINT (pos); | |
| 1435 } | |
| 1436 | |
| 1437 if (posint < top || posint > BUF_ZV (buf)) | |
| 1438 return Qnil; | |
| 1439 | |
| 1440 /* w->start can be out of range. If it is, do something reasonable. */ | |
| 1441 if (top < BUF_BEGV (buf) || top > BUF_ZV (buf)) | |
| 1442 return Qnil; | |
| 1443 | |
| 1708 | 1444 return point_would_be_visible (w, top, posint, !NILP (partially)) |
| 1445 ? Qt : Qnil; | |
| 428 | 1446 } |
| 1447 | |
| 1448 | |
| 1449 struct window * | |
| 1450 decode_window (Lisp_Object window) | |
| 1451 { | |
| 1452 if (NILP (window)) | |
| 1453 return XWINDOW (Fselected_window (Qnil)); | |
| 1454 | |
| 1455 CHECK_LIVE_WINDOW (window); | |
| 1456 return XWINDOW (window); | |
| 1457 } | |
| 1458 | |
| 872 | 1459 int |
| 1460 window_live_p (struct window *w) | |
| 1461 { | |
| 1462 return WINDOW_LIVE_P (w); | |
| 1463 } | |
| 1464 | |
| 1465 Lisp_Object | |
| 1466 window_frame (struct window *w) | |
| 1467 { | |
| 1468 return WINDOW_FRAME (w); | |
| 1469 } | |
| 1470 | |
| 1471 Lisp_Object | |
| 1472 window_buffer (struct window *w) | |
| 1473 { | |
| 1474 return WINDOW_BUFFER (w); | |
| 1475 } | |
| 1476 | |
| 428 | 1477 DEFUN ("window-buffer", Fwindow_buffer, 0, 1, 0, /* |
| 1478 Return the buffer that WINDOW is displaying. | |
| 1479 */ | |
| 1480 (window)) | |
| 1481 { | |
| 1482 return decode_window (window)->buffer; | |
| 1483 } | |
| 1484 | |
| 1485 DEFUN ("window-frame", Fwindow_frame, 0, 1, 0, /* | |
| 1486 Return the frame that window WINDOW is on. | |
| 1487 */ | |
| 1488 (window)) | |
| 1489 { | |
| 1490 return decode_window (window)->frame; | |
| 1491 } | |
| 1492 | |
| 1493 DEFUN ("window-height", Fwindow_height, 0, 1, 0, /* | |
| 1494 Return the number of default lines in WINDOW. | |
| 1495 This actually works by dividing the window's pixel height (including | |
| 1496 the modeline and horizontal scrollbar, if any) by the height of the | |
| 1497 default font; therefore, the number of displayed lines will probably | |
| 1498 be different. | |
| 1499 Use `window-height' to get consistent results in geometry calculations. | |
| 1500 Use `window-displayed-height' to get the actual number of lines | |
| 1501 currently displayed in a window. | |
| 442 | 1502 |
| 1503 The names are somewhat confusing; here's a table to help out: | |
| 1504 | |
| 1505 width height | |
| 1506 ------------------------------------------------------------------------- | |
| 1507 w/o gutters | |
| 1508 (rows/columns) window-width window-text-area-height | |
| 1509 (pixels) window-text-area-pixel-width window-text-area-pixel-height | |
| 1510 | |
| 1511 with gutters | |
| 1512 (rows/columns) window-full-width window-height | |
| 1513 (pixels) window-pixel-width window-pixel-height | |
| 1514 | |
| 1515 actually displayed | |
| 1516 (rows/columns) ---- window-displayed-height | |
| 1517 (pixels) ---- window-displayed-text-pixel-height | |
| 428 | 1518 */ |
| 1519 (window)) | |
| 1520 { | |
| 1521 return make_int (window_char_height (decode_window (window), 1)); | |
| 1522 } | |
| 1523 | |
| 1524 DEFUN ("window-displayed-height", Fwindow_displayed_height, 0, 1, 0, /* | |
| 1525 Return the number of lines currently displayed in WINDOW. | |
| 1526 This counts the actual number of lines displayed in WINDOW | |
| 1527 \(as opposed to `window-height'). The modeline and horizontal | |
| 1528 scrollbar do not count as lines. If there is some blank space | |
| 1529 between the end of the buffer and the end of the window, this | |
| 1530 function pretends that there are lines of text in the default | |
| 1531 font there. | |
| 1532 */ | |
| 1533 (window)) | |
| 1534 { | |
| 1535 return make_int (window_displayed_height (decode_window (window))); | |
| 1536 } | |
| 1537 | |
| 1538 DEFUN ("window-pixel-height", Fwindow_pixel_height, 0, 1, 0, /* | |
| 1539 Return the height of WINDOW in pixels. Defaults to current window. | |
| 1540 This includes the window's modeline and horizontal scrollbar (if any). | |
| 1541 */ | |
| 1542 (window)) | |
| 1543 { | |
| 442 | 1544 return make_int (window_pixel_height (decode_window (window))); |
| 1545 } | |
| 1546 | |
| 1547 DEFUN ("window-text-area-height", Fwindow_text_area_height, 0, 1, 0, /* | |
| 1548 Return the number of default lines in the text area of WINDOW. | |
| 1549 This actually works by dividing the window's text area pixel height (i.e. | |
| 1550 excluding the modeline and horizontal scrollbar, if any) by the height of the | |
| 1551 default font; therefore, the number of displayed lines will probably | |
| 1552 be different. | |
| 1553 See also `window-height' and `window-displayed-height'. | |
| 1554 */ | |
| 1555 (window)) | |
| 1556 { | |
| 1557 return make_int (window_char_height (decode_window (window), 0)); | |
| 428 | 1558 } |
| 1559 | |
| 1560 DEFUN ("window-text-area-pixel-height", | |
| 1561 Fwindow_text_area_pixel_height, 0, 1, 0, /* | |
| 1562 Return the height in pixels of the text-displaying portion of WINDOW. | |
| 1563 Unlike `window-pixel-height', the space occupied by the modeline and | |
| 1564 horizontal scrollbar, if any, is not counted. | |
| 1565 */ | |
| 1566 (window)) | |
| 1567 { | |
| 1568 struct window *w = decode_window (window); | |
| 1569 | |
| 1570 return make_int (WINDOW_TEXT_HEIGHT (w)); | |
| 1571 } | |
| 1572 | |
| 1573 DEFUN ("window-displayed-text-pixel-height", | |
| 1574 Fwindow_displayed_text_pixel_height, 0, 2, 0, /* | |
| 1575 Return the height in pixels of the text displayed in WINDOW. | |
| 1576 Unlike `window-text-area-pixel-height', any blank space below the | |
| 1577 end of the buffer is not included. If optional argument NOCLIPPED | |
| 1578 is non-nil, do not include space occupied by clipped lines. | |
| 1579 */ | |
| 1580 (window, noclipped)) | |
| 1581 { | |
| 1582 struct window *w; | |
| 665 | 1583 Charbpos start, eobuf; |
| 428 | 1584 int defheight; |
| 1585 int hlimit, height, prev_height = -1; | |
| 1586 int line; | |
| 1587 int elt, nelt, i; | |
| 1588 int needed; | |
| 1589 line_start_cache_dynarr *cache; | |
| 1590 | |
| 1591 if (NILP (window)) | |
| 1592 window = Fselected_window (Qnil); | |
| 1593 | |
| 1594 CHECK_LIVE_WINDOW (window); | |
| 1595 w = XWINDOW (window); | |
| 1596 | |
| 1597 start = marker_position (w->start[CURRENT_DISP]); | |
| 1598 hlimit = WINDOW_TEXT_HEIGHT (w); | |
| 1599 eobuf = BUF_ZV (XBUFFER (w->buffer)); | |
| 1600 | |
| 1601 default_face_height_and_width (window, &defheight, NULL); | |
| 1602 | |
| 1603 /* guess lines needed in line start cache + a few extra */ | |
| 1604 needed = (hlimit + defheight-1) / defheight + 3; | |
| 1605 | |
| 1606 while (1) { | |
| 1607 elt = point_in_line_start_cache (w, start, needed); | |
| 1608 assert (elt >= 0); /* in the cache */ | |
| 1609 | |
| 1610 cache = w->line_start_cache; | |
| 1611 nelt = Dynarr_length (cache); | |
| 1612 | |
| 1613 height = 0; | |
| 1614 for (i = elt; i < nelt; i++) { | |
| 1615 line = Dynarr_atp (cache, i)->height; | |
| 1616 | |
| 1617 if (height + line > hlimit) | |
| 1618 return make_int (!NILP (noclipped) ? height : hlimit); | |
| 1619 | |
| 1620 height += line; | |
| 1621 | |
| 1622 if (height == hlimit || Dynarr_atp (cache, i)->end >= eobuf) | |
| 1623 return make_int (height); | |
| 1624 } | |
| 1625 | |
| 1626 /* get here => need more cache lines. try again. */ | |
| 1627 assert(height > prev_height); /* progress? */ | |
| 1628 prev_height = height; | |
| 1629 | |
| 1630 needed += ((hlimit - height)*(nelt - elt) + height-1)/height + 3; | |
| 1631 } | |
| 1632 | |
| 1204 | 1633 RETURN_NOT_REACHED(make_int (0)); /* shut up compiler */ |
| 428 | 1634 } |
| 1635 | |
| 1636 DEFUN ("window-width", Fwindow_width, 0, 1, 0, /* | |
| 1637 Return the number of display columns in WINDOW. | |
| 442 | 1638 This is the width that is usable columns available for text in WINDOW, |
| 1639 and does not include vertical scrollbars, dividers, or the like. See also | |
| 1640 `window-full-width' and `window-height'. | |
| 428 | 1641 */ |
| 1642 (window)) | |
| 1643 { | |
| 1644 return make_int (window_char_width (decode_window (window), 0)); | |
| 1645 } | |
| 1646 | |
| 442 | 1647 DEFUN ("window-full-width", Fwindow_full_width, 0, 1, 0, /* |
| 1648 Return the total number of columns in WINDOW. | |
| 1649 This is like `window-width' but includes vertical scrollbars, dividers, | |
| 1650 etc. | |
| 1651 */ | |
| 1652 (window)) | |
| 1653 { | |
| 1654 return make_int (window_char_width (decode_window (window), 1)); | |
| 1655 } | |
| 1656 | |
| 428 | 1657 DEFUN ("window-pixel-width", Fwindow_pixel_width, 0, 1, 0, /* |
| 1658 Return the width of WINDOW in pixels. Defaults to current window. | |
| 1659 */ | |
| 1660 (window)) | |
| 1661 { | |
| 1662 return make_int (decode_window (window)->pixel_width); | |
| 1663 } | |
| 1664 | |
| 1665 DEFUN ("window-text-area-pixel-width", | |
| 1666 Fwindow_text_area_pixel_width, 0, 1, 0, /* | |
| 1667 Return the width in pixels of the text-displaying portion of WINDOW. | |
| 1668 Unlike `window-pixel-width', the space occupied by the vertical | |
| 1669 scrollbar or divider, if any, is not counted. | |
| 1670 */ | |
| 1671 (window)) | |
| 1672 { | |
| 1673 struct window *w = decode_window (window); | |
| 1674 | |
| 1675 return make_int (WINDOW_TEXT_WIDTH (w)); | |
| 1676 } | |
| 1677 | |
| 1678 DEFUN ("window-hscroll", Fwindow_hscroll, 0, 1, 0, /* | |
| 1679 Return the number of columns by which WINDOW is scrolled from left margin. | |
| 1680 */ | |
| 1681 (window)) | |
| 1682 { | |
| 1683 return make_int (decode_window (window)->hscroll); | |
| 1684 } | |
| 1685 | |
| 1686 DEFUN ("modeline-hscroll", Fmodeline_hscroll, 0, 1, 0, /* | |
| 442 | 1687 Return the horizontal scrolling amount of WINDOW's modeline. |
| 438 | 1688 If the window has no modeline, return nil. |
| 428 | 1689 */ |
| 1690 (window)) | |
| 1691 { | |
| 1692 struct window *w = decode_window (window); | |
| 1693 | |
| 438 | 1694 return (WINDOW_HAS_MODELINE_P (w)) ? make_int ((int) w->modeline_hscroll) : |
| 1695 Qnil; | |
| 428 | 1696 } |
| 1697 | |
| 1698 DEFUN ("set-modeline-hscroll", Fset_modeline_hscroll, 2, 2, 0, /* | |
| 442 | 1699 Set the horizontal scrolling amount of WINDOW's modeline to NCOL. |
| 438 | 1700 If NCOL is negative, it will silently be forced to 0. |
| 1701 If the window has no modeline, return nil. Otherwise, return the actual | |
| 1702 value that was set. | |
| 428 | 1703 */ |
| 1704 (window, ncol)) | |
| 1705 { | |
| 1706 struct window *w = decode_window (window); | |
| 1707 | |
| 1708 if (WINDOW_HAS_MODELINE_P (w)) | |
| 1709 { | |
| 438 | 1710 Charcount ncols; |
| 1711 | |
| 428 | 1712 CHECK_INT (ncol); |
| 438 | 1713 ncols = (XINT (ncol) <= 0) ? 0 : (Charcount) XINT (ncol); |
| 1714 if (ncols != w->modeline_hscroll) | |
| 1715 { | |
| 1716 MARK_MODELINE_CHANGED; | |
| 1717 w->modeline_hscroll = ncols; | |
| 1718 } | |
| 1719 return make_int ((int) ncols); | |
| 428 | 1720 } |
| 438 | 1721 |
| 428 | 1722 return Qnil; |
| 1723 } | |
| 1724 | |
| 1725 DEFUN ("set-window-hscroll", Fset_window_hscroll, 2, 2, 0, /* | |
| 1726 Set number of columns WINDOW is scrolled from left margin to NCOL. | |
| 1727 NCOL should be zero or positive. | |
| 1728 */ | |
| 1729 (window, ncol)) | |
| 1730 { | |
| 1731 struct window *w; | |
| 1732 int ncols; | |
| 1733 | |
| 1734 CHECK_INT (ncol); | |
| 1735 ncols = XINT (ncol); | |
| 1736 if (ncols < 0) ncols = 0; | |
| 1737 w = decode_window (window); | |
| 1738 if (w->hscroll != ncols) | |
| 1739 MARK_CLIP_CHANGED; /* FSF marks differently but we aren't FSF. */ | |
| 1740 w->hscroll = ncols; | |
| 1741 return ncol; | |
| 1742 } | |
| 1743 | |
| 1744 DEFUN ("window-pixel-edges", Fwindow_pixel_edges, 0, 1, 0, /* | |
| 1745 Return a list of the pixel edge coordinates of WINDOW. | |
| 444 | 1746 The returned list is of the form (LEFT TOP RIGHT BOTTOM), |
| 1747 all relative to 0, 0 at the top left corner of WINDOW's frame. | |
| 1748 The frame toolbars, menubars and gutters are considered to be outside | |
| 1749 of this area, while the scrollbars are considered to be inside. | |
| 428 | 1750 */ |
| 1751 (window)) | |
| 1752 { | |
| 1753 struct window *w = decode_window (window); | |
| 1754 struct frame *f = XFRAME (w->frame); | |
| 1755 | |
| 442 | 1756 int left = |
| 1757 w->pixel_left - FRAME_LEFT_BORDER_END (f) - FRAME_LEFT_GUTTER_BOUNDS (f); | |
| 1758 int top = | |
| 1759 w->pixel_top - FRAME_TOP_BORDER_END (f) - FRAME_TOP_GUTTER_BOUNDS (f); | |
| 428 | 1760 |
| 1761 return list4 (make_int (left), | |
| 1762 make_int (top), | |
| 1763 make_int (left + w->pixel_width), | |
| 1764 make_int (top + w->pixel_height)); | |
| 1765 } | |
| 1766 | |
| 1767 DEFUN ("window-text-area-pixel-edges", | |
| 1768 Fwindow_text_area_pixel_edges, 0, 1, 0, /* | |
| 1769 Return a list of the pixel edge coordinates of the text area of WINDOW. | |
| 444 | 1770 The returned list is of the form (LEFT TOP RIGHT BOTTOM), |
| 1771 all relative to 0, 0 at the top left corner of the total area allocated | |
| 1772 to the window, which includes the scrollbars. | |
| 428 | 1773 */ |
| 1774 (window)) | |
| 1775 { | |
| 1776 struct window *w = decode_window (window); | |
| 1777 | |
| 1778 int left = window_left_gutter_width (w, /* modeline = */ 0); | |
| 1779 int top = window_top_gutter_height (w); | |
| 1780 int right = WINDOW_WIDTH (w) - window_right_gutter_width (w, 0); | |
| 1781 int bottom = WINDOW_HEIGHT (w) - window_bottom_gutter_height (w); | |
| 1782 | |
| 1783 return list4 (make_int (left), | |
| 1784 make_int (top), | |
| 1785 make_int (right), | |
| 1786 make_int (bottom)); | |
| 1787 } | |
| 1788 | |
| 1789 DEFUN ("window-point", Fwindow_point, 0, 1, 0, /* | |
| 1790 Return current value of point in WINDOW. | |
| 442 | 1791 For a non-selected window, this is the value point would have |
| 428 | 1792 if that window were selected. |
| 1793 | |
| 1794 Note that, when WINDOW is the selected window and its buffer | |
| 1795 is also currently selected, the value returned is the same as (point). | |
| 1796 It would be more strictly correct to return the `top-level' value | |
| 1797 of point, outside of any save-excursion forms. | |
| 444 | 1798 But that value is hard to find. |
| 428 | 1799 */ |
| 1800 (window)) | |
| 1801 { | |
| 1802 struct window *w = decode_window (window); | |
| 1803 | |
| 1804 /* The special check for current buffer is necessary for this | |
| 1805 function to work as defined when called within an excursion. */ | |
| 1806 if (w == XWINDOW (Fselected_window (XFRAME (w->frame)->device)) | |
| 1807 && current_buffer == XBUFFER (w->buffer)) | |
| 1808 return Fpoint (Qnil); | |
| 1809 return Fmarker_position (w->pointm[CURRENT_DISP]); | |
| 1810 } | |
| 1811 | |
| 1812 DEFUN ("window-start", Fwindow_start, 0, 1, 0, /* | |
| 1813 Return position at which display currently starts in WINDOW. | |
| 1814 This is updated by redisplay or by calling `set-window-start'. | |
| 1815 */ | |
| 1816 (window)) | |
| 1817 { | |
| 1818 return Fmarker_position (decode_window (window)->start[CURRENT_DISP]); | |
| 1819 } | |
| 1820 | |
| 1821 DEFUN ("window-end", Fwindow_end, 0, 2, 0, /* | |
| 1822 Return position at which display currently ends in WINDOW. | |
| 1823 This is updated by redisplay, when it runs to completion. | |
| 444 | 1824 Simply changing the buffer text or setting `window-start' does not |
| 1825 update this value. WINDOW defaults to the selected window. | |
| 1826 | |
| 1827 If optional arg GUARANTEE is non-nil, the return value is guaranteed | |
| 1828 to be the same value as this function would return at the end of the | |
| 1829 next full redisplay assuming nothing else changes in the meantime. | |
| 1830 This function is potentially much slower with this flag set. | |
| 428 | 1831 */ |
| 1832 (window, guarantee)) | |
| 1833 { | |
| 1834 struct window *w = decode_window (window); | |
| 1835 | |
| 1836 if (NILP (guarantee)) | |
| 1837 { | |
| 1838 Lisp_Object buf; | |
| 1839 buf = w->buffer; | |
| 1840 CHECK_BUFFER (buf); | |
| 1841 return make_int (BUF_Z (XBUFFER (buf)) - w->window_end_pos[CURRENT_DISP]); | |
| 1842 } | |
| 1843 else | |
| 1844 { | |
| 665 | 1845 Charbpos startp = marker_position (w->start[CURRENT_DISP]); |
| 428 | 1846 return make_int (end_of_last_line (w, startp)); |
| 1847 } | |
| 1848 } | |
| 1849 | |
| 442 | 1850 DEFUN ("window-last-line-visible-height", Fwindow_last_line_visible_height, 0, 1, 0, /* |
| 1851 Return pixel height of visible part of last window line if it is clipped. | |
| 1852 If the last line is not clipped, return nil. | |
| 1853 */ | |
| 1854 (window)) | |
| 1855 { | |
| 1856 struct window *w = decode_window (window); | |
| 1857 display_line_dynarr *dla = window_display_lines (w, CURRENT_DISP); | |
| 1858 int num_lines = Dynarr_length (dla); | |
| 1859 struct display_line *dl; | |
| 1860 | |
| 1861 /* No lines - no clipped lines */ | |
| 1862 if (num_lines == 0 || (num_lines == 1 && Dynarr_atp (dla, 0)->modeline)) | |
| 1863 return Qnil; | |
| 1864 | |
| 1865 dl = Dynarr_atp (dla, num_lines - 1); | |
| 1866 if (dl->clip == 0) | |
| 1867 return Qnil; | |
| 1868 | |
| 1869 return make_int (dl->ascent + dl->descent - dl->clip); | |
| 1870 } | |
| 1871 | |
| 428 | 1872 DEFUN ("set-window-point", Fset_window_point, 2, 2, 0, /* |
| 1873 Make point value in WINDOW be at position POS in WINDOW's buffer. | |
| 1161 | 1874 If WINDOW is the selected window, and window's buffer is the current |
| 1875 buffer, this actually changes the buffer's point instead of the window's | |
| 1876 point. (The equivalence of the selected window's point with its buffer's | |
| 1877 point is maintained throughout XEmacs. However, enforcing the additional | |
| 1878 restriction on the current buffer is "bug compatible" with FSF and is | |
| 1879 perhaps more logical.) | |
| 428 | 1880 */ |
| 1881 (window, pos)) | |
| 1882 { | |
| 1883 struct window *w = decode_window (window); | |
| 1884 | |
| 1885 CHECK_INT_COERCE_MARKER (pos); | |
| 1161 | 1886 |
| 844 | 1887 /* Don't dereference selected-window because there may not |
| 1888 be one -- e.g. at startup */ | |
| 1161 | 1889 if (EQ (wrap_window (w), Fselected_window (Qnil)) |
| 1890 && EQ (w->buffer, Fcurrent_buffer ())) | |
| 1891 Fgoto_char (pos, Qnil); | |
| 428 | 1892 else |
| 1893 set_marker_restricted (w->pointm[CURRENT_DISP], pos, w->buffer); | |
| 1894 | |
| 1895 MARK_POINT_CHANGED; | |
| 1896 return pos; | |
| 1897 } | |
| 1898 | |
| 1899 DEFUN ("set-window-start", Fset_window_start, 2, 3, 0, /* | |
| 1900 Make display in WINDOW start at position POS in WINDOW's buffer. | |
| 1901 Optional third arg NOFORCE non-nil inhibits next redisplay | |
| 1902 from overriding motion of point in order to display at this exact start. | |
| 1903 */ | |
| 1904 (window, pos, noforce)) | |
| 1905 { | |
| 1906 struct window *w = decode_window (window); | |
| 1907 | |
| 1908 CHECK_INT_COERCE_MARKER (pos); | |
| 1909 set_marker_restricted (w->start[CURRENT_DISP], pos, w->buffer); | |
| 1910 /* this is not right, but much easier than doing what is right. */ | |
| 1911 /* w->start_at_line_beg = 0; */ | |
| 1912 /* WTF is the above supposed to mean? GE */ | |
| 1913 w->start_at_line_beg = beginning_of_line_p (XBUFFER (w->buffer), | |
| 1914 marker_position (w->start[CURRENT_DISP])); | |
| 1915 if (NILP (noforce)) | |
| 1916 w->force_start = 1; | |
| 1917 w->redo_modeline = 1; | |
| 1918 SET_LAST_MODIFIED (w, 0); | |
| 1919 SET_LAST_FACECHANGE (w); | |
| 1920 | |
| 1921 MARK_WINDOWS_CHANGED (w); | |
| 1922 | |
| 1923 return pos; | |
| 1924 } | |
| 1925 | |
| 1926 DEFUN ("window-dedicated-p", Fwindow_dedicated_p, 1, 1, 0, /* | |
| 1927 Return WINDOW's dedicated object, usually t or nil. | |
| 1928 See also `set-window-dedicated-p'. | |
| 1929 */ | |
| 1930 (window)) | |
| 1931 { | |
| 1932 return decode_window (window)->dedicated; | |
| 1933 } | |
| 1934 | |
| 1935 DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, 2, 2, 0, /* | |
| 1936 Control whether WINDOW is dedicated to the buffer it displays. | |
| 1937 If it is dedicated, Emacs will not automatically change | |
| 1938 which buffer appears in it. | |
| 1939 The second argument is the new value for the dedication flag; | |
| 1940 non-nil means yes. | |
| 1941 */ | |
| 1942 (window, arg)) | |
| 1943 { | |
| 1944 struct window *w = decode_window (window); | |
| 1945 | |
| 1946 w->dedicated = NILP (arg) ? Qnil : Qt; | |
| 1947 | |
| 1948 return w->dedicated; | |
| 1949 } | |
| 1950 | |
| 1951 /* FSFmacs has window-display-table here. We have display table as a | |
| 1952 specifier. */ | |
| 1953 | |
| 1954 | |
| 1955 /* Record info on buffer window w is displaying | |
| 1956 when it is about to cease to display that buffer. */ | |
| 1957 static void | |
| 1958 unshow_buffer (struct window *w) | |
| 1959 { | |
| 1960 Lisp_Object buf = w->buffer; | |
| 844 | 1961 struct buffer *b = XBUFFER (buf); |
| 1962 | |
| 1963 if (b != XMARKER (w->pointm[CURRENT_DISP])->buffer) | |
| 2500 | 1964 ABORT (); |
| 428 | 1965 |
| 1966 /* FSF disables this check, so I'll do it too. I hope it won't | |
| 1967 break things. --ben */ | |
| 1968 #if 0 | |
| 1969 if (w == XWINDOW (Fselected_window (Qnil)) | |
| 1970 || ! EQ (buf, XWINDOW (Fselected_window (Qnil))->buffer)) | |
| 1971 /* Do this except when the selected window's buffer | |
| 1972 is being removed from some other window. */ | |
| 1973 #endif | |
| 1974 /* last_window_start records the start position that this buffer | |
| 1975 had in the last window to be disconnected from it. | |
| 1976 Now that this statement is unconditional, | |
| 1977 it is possible for the buffer to be displayed in the | |
| 1978 selected window, while last_window_start reflects another | |
| 1979 window which was recently showing the same buffer. | |
| 1980 Some people might say that might be a good thing. Let's see. */ | |
| 1981 XBUFFER (buf)->last_window_start = | |
| 1982 marker_position (w->start[CURRENT_DISP]); | |
| 1983 | |
| 1984 /* Point in the selected window's buffer | |
| 1985 is actually stored in that buffer, and the window's pointm isn't used. | |
| 1986 So don't clobber point in that buffer. */ | |
| 1987 if (! EQ (buf, XWINDOW (Fselected_window (Qnil))->buffer)) | |
| 844 | 1988 BUF_SET_PT (b, |
| 1989 charbpos_clip_to_bounds | |
| 1990 (BUF_BEGV (b), | |
| 1991 marker_position (w->pointm[CURRENT_DISP]), | |
| 1992 BUF_ZV (b))); | |
| 1993 | |
| 1994 { | |
| 1995 Lisp_Object marker = Fgethash (buf, w->saved_point_cache, Qnil); | |
| 1996 int selected = EQ (wrap_window (w), Fselected_window (Qnil)); | |
| 1997 | |
| 1998 if (NILP (marker)) | |
| 1999 { | |
| 2000 marker = Fmake_marker (); | |
| 2001 Fputhash (buf, marker, w->saved_point_cache); | |
| 2002 } | |
| 2003 Fset_marker (marker, | |
| 2004 selected ? make_int (BUF_PT (b)) : w->pointm[CURRENT_DISP], | |
| 2005 buf); | |
| 2006 | |
| 2007 marker = Fgethash (buf, w->saved_last_window_start_cache, Qnil); | |
| 2008 | |
| 2009 if (NILP (marker)) | |
| 2010 { | |
| 2011 marker = Fmake_marker (); | |
| 2012 Fputhash (buf, marker, w->saved_last_window_start_cache); | |
| 2013 } | |
| 2014 Fset_marker (marker, w->start[CURRENT_DISP], buf); | |
| 2015 } | |
| 428 | 2016 } |
| 2017 | |
| 2018 /* Put REPLACEMENT into the window structure in place of OLD. */ | |
| 2019 static void | |
| 2020 replace_window (Lisp_Object old, Lisp_Object replacement) | |
| 2021 { | |
| 2022 Lisp_Object tem; | |
| 2023 struct window *o = XWINDOW (old), *p = XWINDOW (replacement); | |
| 2024 | |
| 2025 /* If OLD is its frame's root_window, then replacement is the new | |
| 2026 root_window for that frame. */ | |
| 2027 | |
| 2028 if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) | |
| 2029 FRAME_ROOT_WINDOW (XFRAME (o->frame)) = replacement; | |
| 2030 | |
| 2031 WINDOW_LEFT (p) = WINDOW_LEFT (o); | |
| 2032 WINDOW_TOP (p) = WINDOW_TOP (o); | |
| 2033 WINDOW_WIDTH (p) = WINDOW_WIDTH (o); | |
| 2034 WINDOW_HEIGHT (p) = WINDOW_HEIGHT (o); | |
| 2035 | |
| 2036 p->next = tem = o->next; | |
| 2037 if (!NILP (tem)) | |
| 2038 XWINDOW (tem)->prev = replacement; | |
| 2039 | |
| 2040 p->prev = tem = o->prev; | |
| 2041 if (!NILP (tem)) | |
| 2042 XWINDOW (tem)->next = replacement; | |
| 2043 | |
| 2044 p->parent = tem = o->parent; | |
| 2045 if (!NILP (tem)) | |
| 2046 { | |
| 2047 if (EQ (XWINDOW (tem)->vchild, old)) | |
| 2048 XWINDOW (tem)->vchild = replacement; | |
| 2049 if (EQ (XWINDOW (tem)->hchild, old)) | |
| 2050 XWINDOW (tem)->hchild = replacement; | |
| 2051 } | |
| 2052 | |
| 2053 /* #### Here, if replacement is a vertical combination | |
| 2054 and so is its new parent, we should make replacement's | |
| 2055 children be children of that parent instead. */ | |
| 442 | 2056 |
| 2057 ERROR_CHECK_SUBWINDOW_CACHE (p); | |
| 2058 } | |
| 2059 | |
| 2060 static void | |
| 2061 window_unmap_subwindows (struct window* w) | |
| 2062 { | |
| 2063 assert (!NILP (w->subwindow_instance_cache)); | |
| 2064 elisp_maphash (unmap_subwindow_instance_cache_mapper, | |
| 2065 w->subwindow_instance_cache, (void*)1); | |
| 428 | 2066 } |
| 2067 | |
| 2068 /* we're deleting W; set the structure of W to indicate this. */ | |
| 2069 | |
| 2070 static void | |
| 2071 mark_window_as_deleted (struct window *w) | |
| 2072 { | |
| 442 | 2073 /* The window instance cache is going away now, so need to get the |
| 2074 cachels reset by redisplay. */ | |
| 2075 MARK_FRAME_SUBWINDOWS_CHANGED (XFRAME (WINDOW_FRAME (w))); | |
| 2076 | |
| 2077 /* The cache is going away. If we leave unmapping to | |
| 2078 reset_subwindow_cachels then we get in a situation where the | |
| 2079 domain (the window) has been deleted but we still need access to | |
| 2080 its attributes in order to unmap windows properly. Since the | |
| 2081 subwindows are going to get GC'd anyway as a result of the domain | |
| 2082 going away, it is safer to just unmap them all while we know the | |
| 2083 domain is still valid. */ | |
| 2084 ERROR_CHECK_SUBWINDOW_CACHE (w); | |
| 2085 window_unmap_subwindows (w); | |
| 2086 | |
| 617 | 2087 /* Free the extra data structures attached to windows immediately so |
| 2088 they don't sit around consuming excess space. They will be | |
| 2089 reinitialized by the window-configuration code as necessary. */ | |
| 2090 finalize_window ((void *) w, 0); | |
| 2091 | |
| 1149 | 2092 /* Nobody should be accessing anything in this object any more, |
| 618 | 2093 and making them Qnil allows for better GC'ing in case a pointer |
| 2094 to the dead window continues to hang around. Zero all other | |
| 2095 structs in case someone tries to access something through them. | |
| 2096 | |
| 2097 (So, in point of fact, we zero out all of the "saved" slots, | |
| 2098 which are obviously restored from the window config, plus the | |
| 2099 slots which were already zeroed.) | |
| 617 | 2100 |
| 2101 As an example of why setting the values to Qnil is good, here | |
| 2102 is an old comment: | |
| 2103 | |
| 2104 In the loop | |
| 428 | 2105 (while t (split-window) (delete-window)) |
| 2106 we end up with a tree of deleted windows which are all connected | |
| 2107 through the `next' slot. This might not seem so bad, as they're | |
| 2108 deleted, and will presumably be GCed - but if even *one* of those | |
| 2109 windows is still being pointed to, by the user, or by a window | |
| 1149 | 2110 configuration, then *all* of those windows stick around. */ |
| 617 | 2111 |
| 618 | 2112 #define WINDOW_SLOT(slot) |
| 2113 #define WINDOW_SAVED_SLOT(slot, compare) w->slot = Qnil; | |
| 617 | 2114 #include "winslots.h" |
| 428 | 2115 |
| 618 | 2116 w->next = Qnil; |
| 2117 w->prev = Qnil; | |
| 2118 w->hchild = Qnil; | |
| 2119 w->vchild = Qnil; | |
| 2120 w->parent = Qnil; | |
| 2121 w->subwindow_instance_cache = Qnil; | |
| 2122 | |
| 428 | 2123 w->dead = 1; |
| 853 | 2124 note_object_deleted (wrap_window (w)); |
| 428 | 2125 } |
| 2126 | |
| 1207 | 2127 /* Check if window contains pwindow. */ |
| 2128 | |
| 2129 static int | |
| 2130 contains_window (Lisp_Object window, Lisp_Object pwindow) | |
| 2131 { | |
| 2132 while (!NILP (pwindow)) | |
| 2133 { | |
| 2134 if (EQ (window, pwindow)) | |
| 2135 return 1; | |
| 2136 pwindow = XWINDOW (pwindow)->parent; | |
| 2137 } | |
| 2138 return 0; | |
| 2139 } | |
| 2140 | |
| 428 | 2141 DEFUN ("delete-window", Fdelete_window, 0, 2, "", /* |
| 2142 Remove WINDOW from the display. Default is selected window. | |
| 444 | 2143 If window is the only one on its frame, the frame is deleted as well. |
| 428 | 2144 Normally, you cannot delete the last non-minibuffer-only frame (you must |
| 2145 use `save-buffers-kill-emacs' or `kill-emacs'). However, if optional | |
| 2146 second argument FORCE is non-nil, you can delete the last frame. (This | |
| 2147 will automatically call `save-buffers-kill-emacs'.) | |
| 2148 */ | |
| 2149 (window, force)) | |
| 2150 { | |
| 2151 /* This function can GC if this is the only window in the frame */ | |
| 2152 struct window *w; | |
| 2153 Lisp_Object parent; | |
| 2154 struct window *par; | |
| 2155 Lisp_Object frame; | |
| 2156 struct frame *f; | |
| 2157 struct device *d; | |
| 2158 | |
| 2159 /* Note: this function is called by other C code on non-leaf | |
| 2160 windows. */ | |
| 2161 | |
| 2162 /* Do the equivalent of decode_window() but don't error out on | |
| 2163 deleted window; it's OK to delete an already-deleted window. */ | |
| 2164 if (NILP (window)) | |
| 2165 window = Fselected_window (Qnil); | |
| 2166 else | |
| 2167 CHECK_WINDOW (window); | |
| 442 | 2168 |
| 428 | 2169 w = XWINDOW (window); |
| 2170 | |
| 2171 /* It's okay to delete an already-deleted window. */ | |
| 2172 if (! WINDOW_LIVE_P (w)) | |
| 2173 return Qnil; | |
| 2174 | |
| 853 | 2175 check_allowed_operation (OPERATION_DELETE_OBJECT, window, Qnil); |
| 2176 | |
| 428 | 2177 frame = WINDOW_FRAME (w); |
| 2178 f = XFRAME (frame); | |
| 2179 d = XDEVICE (FRAME_DEVICE (f)); | |
| 2180 | |
| 2181 if (TOP_LEVEL_WINDOW_P (w)) | |
| 2182 { | |
| 2183 if (NILP (memq_no_quit (frame, DEVICE_FRAME_LIST (d)))) | |
| 2184 /* this frame isn't fully initialized yet; don't blow up. */ | |
| 2185 return Qnil; | |
| 2186 | |
| 2187 if (MINI_WINDOW_P (XWINDOW (window))) | |
| 563 | 2188 signal_error (Qinvalid_operation, "Attempt to delete the minibuffer window", Qunbound); |
| 428 | 2189 |
| 2190 /* It has been suggested that it's a good thing for C-x 0 to have this | |
| 2191 behavior, but not such a good idea for #'delete-window to have it. | |
| 2192 Maybe C-x 0 should be bound to something else, or maybe frame | |
| 2193 deletion should only happen when this is called interactively. | |
| 2194 */ | |
| 2195 delete_frame_internal (f, !NILP (force), 0, 0); | |
| 2196 return Qnil; | |
| 2197 } | |
| 2198 | |
| 2199 /* At this point, we know the window has a parent. */ | |
| 2200 parent = w->parent; | |
| 2201 par = XWINDOW (parent); | |
| 2202 | |
| 2203 MARK_FRAME_WINDOWS_STRUCTURE_CHANGED (f); | |
| 430 | 2204 /* It's quite likely that deleting a window will result in |
| 2205 subwindows needing to be deleted also (since they are cached | |
| 2206 per-window). So we mark them as changed, so that the cachels will | |
| 2207 get reset by redisplay and thus deleted subwindows can get | |
| 2208 GC'd. */ | |
| 2209 MARK_FRAME_SUBWINDOWS_CHANGED (f); | |
| 428 | 2210 |
| 2211 /* Are we trying to delete any frame's selected window? | |
| 2212 Note that we could be dealing with a non-leaf window | |
| 2213 where the selected window is one of our children. | |
| 2214 So, we check by scanning all the ancestors of the | |
| 2215 frame's selected window and comparing each one with | |
| 2216 WINDOW. */ | |
| 1207 | 2217 if (contains_window (window, FRAME_SELECTED_WINDOW (f))) |
| 2218 { | |
| 2219 Lisp_Object alternative; | |
| 2220 alternative = Fnext_window (window, Qlambda, Qnil, Qnil); | |
| 2221 | |
| 2222 /* #### */ | |
| 2223 /* If we're about to delete the selected window on the | |
| 2224 selected frame, then we should use Fselect_window to select | |
| 2225 the new window. On the other hand, if we're about to | |
| 2226 delete the selected window on any other frame, we shouldn't do | |
| 2227 anything but set the frame's selected_window slot. */ | |
| 2228 if (EQ (frame, Fselected_frame (Qnil))) | |
| 2229 Fselect_window (alternative, Qnil); | |
| 2230 else | |
| 2231 set_frame_selected_window (f, alternative); | |
| 2232 } | |
| 2233 | |
| 2234 /* Some display parameters (gutter display specifically) depend on | |
| 2235 FRAME_LAST_NONMINIBUF (f) to be set to a live window. Ensure that. */ | |
| 2236 if (contains_window (window, FRAME_LAST_NONMINIBUF_WINDOW (f))) | |
| 2237 f->last_nonminibuf_window = Fnext_window (window, Qlambda, Qnil, Qnil); | |
| 428 | 2238 |
| 2239 /* w->buffer is nil in a non-leaf window; in this case, | |
| 2240 get rid of the markers we maintain that point into that buffer. */ | |
| 2241 if (!NILP (w->buffer)) | |
| 2242 { | |
| 2243 unshow_buffer (w); | |
| 2244 unchain_marker (w->pointm[CURRENT_DISP]); | |
| 2245 unchain_marker (w->pointm[DESIRED_DISP]); | |
| 2246 unchain_marker (w->pointm[CMOTION_DISP]); | |
| 2247 unchain_marker (w->start[CURRENT_DISP]); | |
| 2248 unchain_marker (w->start[DESIRED_DISP]); | |
| 2249 unchain_marker (w->start[CMOTION_DISP]); | |
| 2250 unchain_marker (w->sb_point); | |
| 1149 | 2251 w->buffer = Qnil; |
| 428 | 2252 } |
| 2253 | |
| 2254 /* close up the hole in the sibling list */ | |
| 2255 if (!NILP (w->next)) | |
| 2256 XWINDOW (w->next)->prev = w->prev; | |
| 2257 if (!NILP (w->prev)) | |
| 2258 XWINDOW (w->prev)->next = w->next; | |
| 2259 if (EQ (window, par->hchild)) | |
| 2260 par->hchild = w->next; | |
| 2261 if (EQ (window, par->vchild)) | |
| 2262 par->vchild = w->next; | |
| 2263 | |
| 2264 /* Find one of our siblings to give our space to. */ | |
| 2265 { | |
| 2266 Lisp_Object sib = w->prev; | |
| 2267 if (NILP (sib)) | |
| 2268 { | |
| 2269 /* If w gives its space to its next sibling, that sibling needs | |
| 2270 to have its top/left side pulled back to where w's is. | |
| 2271 set_window_{height,width} will re-position the sibling's | |
| 2272 children. */ | |
| 2273 sib = w->next; | |
| 2274 WINDOW_TOP (XWINDOW (sib)) = WINDOW_TOP (w); | |
| 2275 WINDOW_LEFT (XWINDOW (sib)) = WINDOW_LEFT (w); | |
| 2276 } | |
| 2277 | |
| 2278 /* Stretch that sibling. */ | |
| 2279 if (!NILP (par->vchild)) | |
| 2280 set_window_pixheight | |
| 2281 (sib, (WINDOW_HEIGHT (XWINDOW (sib)) + WINDOW_HEIGHT (w)), 1); | |
| 2282 if (!NILP (par->hchild)) | |
| 2283 set_window_pixwidth | |
| 2284 (sib, (WINDOW_WIDTH (XWINDOW (sib)) + WINDOW_WIDTH (w)), 1); | |
| 2285 } | |
| 2286 | |
| 2287 /* If parent now has only one child, | |
| 2288 put the child into the parent's place. */ | |
| 2289 { | |
| 2290 Lisp_Object parchild = par->hchild; | |
| 2291 if (NILP (parchild)) | |
| 2292 parchild = par->vchild; | |
| 2293 if (NILP (XWINDOW (parchild)->next)) | |
| 2294 { | |
| 2295 replace_window (parent, parchild); | |
| 2296 mark_window_as_deleted (XWINDOW (parent)); | |
| 2297 } | |
| 2298 } | |
| 2299 | |
| 2300 /* Since we may be deleting combination windows, we must make sure that | |
| 2301 not only W but all its children have been marked as deleted. */ | |
| 2302 if (!NILP (w->hchild)) | |
| 2303 delete_all_subwindows (XWINDOW (w->hchild)); | |
| 2304 else if (!NILP (w->vchild)) | |
| 2305 delete_all_subwindows (XWINDOW (w->vchild)); | |
| 2306 | |
| 1752 | 2307 /* Warning: mark_window_as_deleted calls window_unmap_subwindows and |
| 2308 therefore redisplay, so it requires the mirror structure to be | |
| 2309 correct. We must dirty the mirror before it is called. */ | |
| 2310 f->mirror_dirty = 1; | |
| 2311 | |
| 428 | 2312 mark_window_as_deleted (w); |
| 2313 | |
| 2314 return Qnil; | |
| 2315 } | |
| 2316 | |
| 2317 | |
| 2318 DEFUN ("next-window", Fnext_window, 0, 4, 0, /* | |
| 442 | 2319 Return the next window after WINDOW in the canonical ordering of windows. |
| 428 | 2320 If omitted, WINDOW defaults to the selected window. |
| 2321 | |
| 2322 Optional second arg MINIBUF t means count the minibuffer window even | |
| 2323 if not active. MINIBUF nil or omitted means count the minibuffer iff | |
| 2324 it is active. MINIBUF neither t nor nil means not to count the | |
| 2325 minibuffer even if it is active. | |
| 2326 | |
| 2327 Several frames may share a single minibuffer; if the minibuffer | |
| 2328 counts, all windows on all frames that share that minibuffer count | |
| 2329 too. Therefore, `next-window' can be used to iterate through the | |
| 2330 set of windows even when the minibuffer is on another frame. If the | |
| 2331 minibuffer does not count, only windows from WINDOW's frame count. | |
| 2332 | |
| 444 | 2333 By default, only the windows in the selected frame are considered. |
| 2334 The optional argument WHICH-FRAMES changes this behavior: | |
| 2335 WHICH-FRAMES = `visible' means search windows on all visible frames. | |
| 448 | 2336 WHICH-FRAMES = 0 means search windows on all visible and iconified frames. |
| 444 | 2337 WHICH-FRAMES = t means search windows on all frames including invisible frames. |
| 2338 WHICH-FRAMES = a frame means search only windows on that frame. | |
| 2339 Anything else means restrict to the selected frame. | |
| 2340 | |
| 2341 The optional fourth argument WHICH-DEVICES further clarifies on which | |
| 2342 devices to search for frames as specified by WHICH-FRAMES. This value | |
| 2343 is only meaningful if WHICH-FRAMES is non-nil. | |
| 2344 If nil or omitted, search all devices on the selected console. | |
| 2345 If a device, only search that device. | |
| 2346 If a console, search all devices on that console. | |
| 2347 If a device type, search all devices of that type. | |
| 2348 If `window-system', search all window-system devices. | |
| 2349 Any other non-nil value means search all devices. | |
| 2350 | |
| 2351 If you use consistent values for MINIBUF, WHICH-FRAMES, and WHICH-DEVICES, | |
| 2352 you can use `next-window' to iterate through the entire cycle of | |
| 2353 acceptable windows, eventually ending up back at the window you started with. | |
| 428 | 2354 `previous-window' traverses the same cycle, in the reverse order. |
| 2355 */ | |
| 444 | 2356 (window, minibuf, which_frames, which_devices)) |
| 428 | 2357 { |
| 2358 Lisp_Object tem; | |
| 2359 Lisp_Object start_window; | |
| 2360 | |
| 2361 if (NILP (window)) | |
| 2362 window = Fselected_window (Qnil); | |
| 2363 else | |
| 2364 CHECK_LIVE_WINDOW (window); | |
| 2365 | |
| 2366 start_window = window; | |
| 2367 | |
| 2368 /* minibuf == nil may or may not include minibuffers. | |
| 2369 Decide if it does. */ | |
| 2370 if (NILP (minibuf)) | |
| 2371 minibuf = (minibuf_level ? minibuf_window : Qlambda); | |
| 2372 else if (! EQ (minibuf, Qt)) | |
| 2373 minibuf = Qlambda; | |
| 442 | 2374 /* Now `minibuf' is one of: |
| 2375 t => count all minibuffer windows | |
| 2376 lambda => count none of them | |
| 428 | 2377 or a specific minibuffer window (the active one) to count. */ |
| 2378 | |
| 444 | 2379 /* which_frames == nil doesn't specify which frames to include. */ |
| 2380 if (NILP (which_frames)) | |
| 2381 which_frames = (! EQ (minibuf, Qlambda) | |
| 428 | 2382 ? (FRAME_MINIBUF_WINDOW |
| 2383 (XFRAME | |
| 2384 (WINDOW_FRAME | |
| 2385 (XWINDOW (window))))) | |
| 2386 : Qnil); | |
| 444 | 2387 else if (EQ (which_frames, Qvisible)) |
| 428 | 2388 ; |
| 444 | 2389 else if (ZEROP (which_frames)) |
| 428 | 2390 ; |
| 444 | 2391 else if (FRAMEP (which_frames) && ! EQ (which_frames, Fwindow_frame (window))) |
| 2392 /* If which_frames is a frame and window arg isn't on that frame, just | |
| 428 | 2393 return the first window on the frame. */ |
| 444 | 2394 return frame_first_window (XFRAME (which_frames)); |
| 2395 else if (! EQ (which_frames, Qt)) | |
| 2396 which_frames = Qnil; | |
| 2397 /* Now `which_frames' is one of: | |
| 442 | 2398 t => search all frames |
| 2399 nil => search just the current frame | |
| 2400 visible => search just visible frames | |
| 2401 0 => search visible and iconified frames | |
| 2402 a window => search the frame that window belongs to. */ | |
| 428 | 2403 |
| 2404 /* Do this loop at least once, to get the next window, and perhaps | |
| 2405 again, if we hit the minibuffer and that is not acceptable. */ | |
| 2406 do | |
| 2407 { | |
| 2408 /* Find a window that actually has a next one. This loop | |
| 2409 climbs up the tree. */ | |
| 2410 while (tem = XWINDOW (window)->next, NILP (tem)) | |
| 2411 if (tem = XWINDOW (window)->parent, !NILP (tem)) | |
| 2412 window = tem; | |
| 2413 else /* window must be minibuffer window now */ | |
| 2414 { | |
| 2415 /* We've reached the end of this frame. | |
| 2416 Which other frames are acceptable? */ | |
| 2417 tem = WINDOW_FRAME (XWINDOW (window)); | |
| 2418 | |
| 444 | 2419 if (! NILP (which_frames)) |
| 428 | 2420 { |
| 442 | 2421 Lisp_Object tem1 = tem; |
| 444 | 2422 tem = next_frame (tem, which_frames, which_devices); |
| 442 | 2423 |
| 428 | 2424 /* In the case where the minibuffer is active, |
| 2425 and we include its frame as well as the selected one, | |
| 2426 next_frame may get stuck in that frame. | |
| 2427 If that happens, go back to the selected frame | |
| 2428 so we can complete the cycle. */ | |
| 2429 if (EQ (tem, tem1)) | |
| 793 | 2430 tem = wrap_frame (selected_frame ()); |
| 428 | 2431 } |
| 2432 | |
| 2433 tem = FRAME_ROOT_WINDOW (XFRAME (tem)); | |
| 2434 break; | |
| 2435 } | |
| 2436 | |
| 2437 window = tem; | |
| 2438 | |
| 2439 /* If we're in a combination window, find its first child and | |
| 2440 recurse on that. Otherwise, we've found the window we want. */ | |
| 2441 while (1) | |
| 2442 { | |
| 2443 if (!NILP (XWINDOW (window)->hchild)) | |
| 2444 window = XWINDOW (window)->hchild; | |
| 2445 else if (!NILP (XWINDOW (window)->vchild)) | |
| 2446 window = XWINDOW (window)->vchild; | |
| 2447 else break; | |
| 2448 } | |
| 2449 } | |
| 2450 /* Which windows are acceptable? | |
| 2451 Exit the loop and accept this window if | |
| 2452 this isn't a minibuffer window, | |
| 2453 or we're accepting all minibuffer windows, | |
| 2454 or this is the active minibuffer and we are accepting that one, or | |
| 2455 we've come all the way around and we're back at the original window. */ | |
| 2456 while (MINI_WINDOW_P (XWINDOW (window)) | |
| 2457 && ! EQ (minibuf, Qt) | |
| 2458 && ! EQ (minibuf, window) | |
| 2459 && ! EQ (window, start_window)); | |
| 2460 | |
| 2461 return window; | |
| 2462 } | |
| 2463 | |
| 2464 DEFUN ("previous-window", Fprevious_window, 0, 4, 0, /* | |
| 442 | 2465 Return the window preceding WINDOW in the canonical ordering of windows. |
| 428 | 2466 If omitted, WINDOW defaults to the selected window. |
| 2467 | |
| 2468 Optional second arg MINIBUF t means count the minibuffer window even | |
| 2469 if not active. MINIBUF nil or omitted means count the minibuffer iff | |
| 2470 it is active. MINIBUF neither t nor nil means not to count the | |
| 2471 minibuffer even if it is active. | |
| 2472 | |
| 2473 Several frames may share a single minibuffer; if the minibuffer | |
| 2474 counts, all windows on all frames that share that minibuffer count | |
| 2475 too. Therefore, `previous-window' can be used to iterate through | |
| 2476 the set of windows even when the minibuffer is on another frame. If | |
| 442 | 2477 the minibuffer does not count, only windows from WINDOW's frame count. |
| 2478 | |
| 444 | 2479 By default, only the windows in the selected frame are considered. |
| 2480 The optional argument WHICH-FRAMES changes this behavior: | |
| 2481 WHICH-FRAMES = `visible' means search windows on all visible frames. | |
| 448 | 2482 WHICH-FRAMES = 0 means search windows on all visible and iconified frames. |
| 444 | 2483 WHICH-FRAMES = t means search windows on all frames including invisible frames. |
| 2484 WHICH-FRAMES = a frame means search only windows on that frame. | |
| 2485 Anything else means restrict to the selected frame. | |
| 2486 | |
| 2487 The optional fourth argument WHICH-DEVICES further clarifies on which | |
| 2488 devices to search for frames as specified by WHICH-FRAMES. This value | |
| 2489 is only meaningful if WHICH-FRAMES is non-nil. | |
| 2490 If nil or omitted, search all devices on the selected console. | |
| 2491 If a device, only search that device. | |
| 2492 If a console, search all devices on that console. | |
| 2493 If a device type, search all devices of that type. | |
| 2494 If `window-system', search all window-system devices. | |
| 2495 Any other non-nil value means search all devices. | |
| 2496 | |
| 2497 If you use consistent values for MINIBUF, WHICH-FRAMES, and WHICH-DEVICES, | |
| 2498 you can use `previous-window' to iterate through the entire cycle of | |
| 2499 acceptable windows, eventually ending up back at the window you started with. | |
| 428 | 2500 `next-window' traverses the same cycle, in the reverse order. |
| 2501 */ | |
| 444 | 2502 (window, minibuf, which_frames, devices)) |
| 428 | 2503 { |
| 2504 Lisp_Object tem; | |
| 2505 Lisp_Object start_window; | |
| 2506 | |
| 2507 if (NILP (window)) | |
| 2508 window = Fselected_window (Qnil); | |
| 2509 else | |
| 2510 CHECK_LIVE_WINDOW (window); | |
| 2511 | |
| 2512 start_window = window; | |
| 2513 | |
| 2514 /* minibuf == nil may or may not include minibuffers. | |
| 2515 Decide if it does. */ | |
| 2516 if (NILP (minibuf)) | |
| 2517 minibuf = (minibuf_level ? minibuf_window : Qlambda); | |
| 2518 else if (! EQ (minibuf, Qt)) | |
| 2519 minibuf = Qlambda; | |
| 442 | 2520 /* Now `minibuf' is one of: |
| 2521 t => count all minibuffer windows | |
| 2522 lambda => count none of them | |
| 428 | 2523 or a specific minibuffer window (the active one) to count. */ |
| 2524 | |
| 444 | 2525 /* which_frames == nil doesn't specify which frames to include. |
| 428 | 2526 Decide which frames it includes. */ |
| 444 | 2527 if (NILP (which_frames)) |
| 2528 which_frames = (! EQ (minibuf, Qlambda) | |
| 428 | 2529 ? (FRAME_MINIBUF_WINDOW |
| 2530 (XFRAME | |
| 2531 (WINDOW_FRAME | |
| 2532 (XWINDOW (window))))) | |
| 2533 : Qnil); | |
| 444 | 2534 else if (EQ (which_frames, Qvisible)) |
| 428 | 2535 ; |
| 444 | 2536 else if (ZEROP (which_frames)) |
| 428 | 2537 ; |
| 444 | 2538 else if (FRAMEP (which_frames) && ! EQ (which_frames, Fwindow_frame (window))) |
| 2539 /* If which_frames is a frame and window arg isn't on that frame, just | |
| 428 | 2540 return the first window on the frame. */ |
| 444 | 2541 return frame_first_window (XFRAME (which_frames)); |
| 2542 else if (! EQ (which_frames, Qt)) | |
| 2543 which_frames = Qnil; | |
| 2544 /* Now `which_frames' is one of: | |
| 442 | 2545 t => search all frames |
| 2546 nil => search just the current frame | |
| 2547 visible => search just visible frames | |
| 2548 0 => search visible and iconified frames | |
| 2549 a window => search the frame that window belongs to. */ | |
| 428 | 2550 |
| 2551 /* Do this loop at least once, to get the next window, and perhaps | |
| 2552 again, if we hit the minibuffer and that is not acceptable. */ | |
| 2553 do | |
| 2554 { | |
| 2555 /* Find a window that actually has a next one. This loop | |
| 2556 climbs up the tree. */ | |
| 2557 while (tem = XWINDOW (window)->prev, NILP (tem)) | |
| 2558 if (tem = XWINDOW (window)->parent, !NILP (tem)) | |
| 2559 window = tem; | |
| 2560 else /* window must be minibuffer window now */ | |
| 2561 { | |
| 2562 /* We have found the top window on the frame. | |
| 2563 Which frames are acceptable? */ | |
| 2564 tem = WINDOW_FRAME (XWINDOW (window)); | |
| 2565 | |
| 444 | 2566 if (! NILP (which_frames)) |
| 442 | 2567 /* It's actually important that we use previous_frame here, |
| 428 | 2568 rather than next_frame. All the windows acceptable |
| 2569 according to the given parameters should form a ring; | |
| 2570 Fnext_window and Fprevious_window should go back and | |
| 2571 forth around the ring. If we use next_frame here, | |
| 2572 then Fnext_window and Fprevious_window take different | |
| 2573 paths through the set of acceptable windows. | |
| 2574 window_loop assumes that these `ring' requirement are | |
| 2575 met. */ | |
| 2576 { | |
| 442 | 2577 Lisp_Object tem1 = tem; |
| 444 | 2578 tem = previous_frame (tem, which_frames, devices); |
| 428 | 2579 /* In the case where the minibuffer is active, |
| 2580 and we include its frame as well as the selected one, | |
| 2581 next_frame may get stuck in that frame. | |
| 2582 If that happens, go back to the selected frame | |
| 2583 so we can complete the cycle. */ | |
| 2584 if (EQ (tem, tem1)) | |
| 793 | 2585 tem = wrap_frame (selected_frame ()); |
| 428 | 2586 } |
| 2587 | |
| 2588 /* If this frame has a minibuffer, find that window first, | |
| 2589 because it is conceptually the last window in that frame. */ | |
| 2590 if (FRAME_HAS_MINIBUF_P (XFRAME (tem))) | |
| 2591 tem = FRAME_MINIBUF_WINDOW (XFRAME (tem)); | |
| 2592 else | |
| 2593 tem = FRAME_ROOT_WINDOW (XFRAME (tem)); | |
| 2594 | |
| 2595 break; | |
| 2596 } | |
| 2597 | |
| 2598 window = tem; | |
| 2599 | |
| 2600 /* If we're in a combination window, find its first child and | |
| 2601 recurse on that. Otherwise, we've found the window we want. */ | |
| 2602 while (1) | |
| 2603 { | |
| 2604 if (!NILP (XWINDOW (window)->hchild)) | |
| 2605 window = XWINDOW (window)->hchild; | |
| 2606 else if (!NILP (XWINDOW (window)->vchild)) | |
| 2607 window = XWINDOW (window)->vchild; | |
| 2608 else break; | |
| 2609 while (tem = XWINDOW (window)->next, !NILP (tem)) | |
| 2610 window = tem; | |
| 2611 } | |
| 2612 } | |
| 2613 /* Which windows are acceptable? | |
| 2614 Exit the loop and accept this window if | |
| 2615 this isn't a minibuffer window, | |
| 2616 or we're accepting all minibuffer windows, | |
| 2617 or this is the active minibuffer and we are accepting that one, or | |
| 2618 we've come all the way around and we're back at the original window. */ | |
| 2619 while (MINI_WINDOW_P (XWINDOW (window)) | |
| 2620 && ! EQ (minibuf, Qt) | |
| 2621 && ! EQ (minibuf, window) | |
| 2622 && ! EQ (window, start_window)); | |
| 2623 | |
| 2624 return window; | |
| 2625 } | |
| 2626 | |
| 2627 DEFUN ("next-vertical-window", Fnext_vertical_window, 0, 1, 0, /* | |
| 2628 Return the next window which is vertically after WINDOW. | |
| 2629 */ | |
| 2630 (window)) | |
| 2631 { | |
| 2632 Lisp_Object root; | |
| 2633 struct window *w = decode_window (window); | |
| 793 | 2634 window = wrap_window (w); |
| 428 | 2635 |
| 2636 if (MINI_WINDOW_P (XWINDOW (window))) | |
| 2637 return Qnil; | |
| 2638 | |
| 2639 root = FRAME_ROOT_WINDOW (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
| 2640 | |
| 2641 if (EQ (window, root)) | |
| 2642 { | |
| 2643 while (1) | |
| 2644 if (!NILP (XWINDOW (window)->hchild)) | |
| 2645 window = XWINDOW (window)->hchild; | |
| 2646 else if (!NILP (XWINDOW (window)->vchild)) | |
| 2647 window = XWINDOW (window)->vchild; | |
| 2648 else | |
| 2649 return window; | |
| 2650 } | |
| 2651 | |
| 2652 do | |
| 2653 { | |
| 2654 if (!NILP (XWINDOW (window)->parent) && | |
| 2655 !NILP (XWINDOW (XWINDOW (window)->parent)->vchild)) | |
| 2656 { | |
| 2657 if (!NILP (XWINDOW (window)->next)) | |
| 2658 return XWINDOW (window)->next; | |
| 2659 else | |
| 2660 window = XWINDOW (window)->parent; | |
| 2661 } | |
| 2662 else | |
| 2663 window = XWINDOW (window)->parent; | |
| 2664 } | |
| 2665 while (!EQ (window, root)); | |
| 2666 | |
| 2667 while (1) | |
| 2668 if (!NILP (XWINDOW (window)->hchild)) | |
| 2669 window = XWINDOW (window)->hchild; | |
| 2670 else if (!NILP (XWINDOW (window)->vchild)) | |
| 2671 window = XWINDOW (window)->vchild; | |
| 2672 else | |
| 2673 return window; | |
| 2674 } | |
| 2675 | |
| 2676 DEFUN ("other-window", Fother_window, 1, 3, "p", /* | |
| 444 | 2677 Select the COUNT'th different window on this frame. |
| 428 | 2678 All windows on current frame are arranged in a cyclic order. |
| 444 | 2679 This command selects the window COUNT steps away in that order. |
| 2680 A negative COUNT moves in the opposite order. | |
| 2681 | |
| 2682 By default, only the windows in the selected frame are considered. | |
| 2683 The optional argument WHICH-FRAMES changes this behavior: | |
| 2684 WHICH-FRAMES = `visible' means search windows on all visible frames. | |
| 448 | 2685 WHICH-FRAMES = 0 means search windows on all visible and iconified frames. |
| 444 | 2686 WHICH-FRAMES = t means search windows on all frames including invisible frames. |
| 2687 WHICH-FRAMES = a frame means search only windows on that frame. | |
| 2688 Anything else means restrict to the selected frame. | |
| 2689 | |
| 2690 The optional argument WHICH-DEVICES further clarifies on which devices | |
| 2691 to search for frames as specified by WHICH-FRAMES. This value is only | |
| 2692 meaningful if WHICH-FRAMES is non-nil. | |
| 2693 If nil or omitted, search all devices on the selected console. | |
| 2694 If a device, only search that device. | |
| 2695 If a console, search all devices on that console. | |
| 2696 If a device type, search all devices of that type. | |
| 2697 If `window-system', search all window-system devices. | |
| 2698 Any other non-nil value means search all devices. | |
| 428 | 2699 */ |
| 444 | 2700 (count, which_frames, which_devices)) |
| 428 | 2701 { |
| 2702 int i; | |
| 2703 Lisp_Object w; | |
| 2704 | |
| 444 | 2705 CHECK_INT (count); |
| 428 | 2706 w = Fselected_window (Qnil); |
| 444 | 2707 i = XINT (count); |
| 428 | 2708 |
| 2709 while (i > 0) | |
| 2710 { | |
| 444 | 2711 w = Fnext_window (w, Qnil, which_frames, which_devices); |
| 428 | 2712 i--; |
| 2713 } | |
| 2714 while (i < 0) | |
| 2715 { | |
| 444 | 2716 w = Fprevious_window (w, Qnil, which_frames, which_devices); |
| 428 | 2717 i++; |
| 2718 } | |
| 2719 Fselect_window (w, Qnil); | |
| 2720 return Qnil; | |
| 2721 } | |
| 2722 | |
| 2723 | |
| 2724 /* Look at all windows, performing an operation specified by TYPE | |
| 2725 with argument OBJ. | |
| 2726 | |
| 2727 If FRAMES is Qt, look at all frames, if Qnil, look at just the selected | |
| 2728 frame. If FRAMES is a frame, just look at windows on that frame. | |
| 2729 If MINI is non-zero, perform the operation on minibuffer windows too. | |
| 2730 */ | |
| 2731 | |
| 2732 enum window_loop | |
| 2733 { | |
| 2734 WINDOW_LOOP_UNUSED, | |
| 2735 GET_BUFFER_WINDOW, /* Arg is buffer */ | |
| 2736 GET_LRU_WINDOW, /* Arg is t for full-width windows only */ | |
| 2737 DELETE_OTHER_WINDOWS, /* Arg is window not to delete */ | |
| 2738 DELETE_BUFFER_WINDOWS, /* Arg is buffer */ | |
| 2739 GET_LARGEST_WINDOW, | |
| 2740 GET_BUFFER_WINDOW_COUNT, /* Arg is buffer */ | |
| 2741 GET_BUFFER_MRU_WINDOW /* Arg is buffer */ | |
| 2742 }; | |
| 2743 | |
| 2744 static Lisp_Object | |
| 2745 window_loop (enum window_loop type, | |
| 2746 Lisp_Object obj, | |
| 2747 int mini, | |
| 444 | 2748 Lisp_Object which_frames, |
| 428 | 2749 int dedicated_too, |
| 444 | 2750 Lisp_Object which_devices) |
| 428 | 2751 { |
| 448 | 2752 /* This function can GC if type == DELETE_BUFFER_WINDOWS */ |
| 428 | 2753 Lisp_Object w; |
| 2754 Lisp_Object best_window = Qnil; | |
| 2755 Lisp_Object next_window; | |
| 2756 Lisp_Object last_window; | |
| 2757 struct frame *frame; | |
| 2758 Lisp_Object frame_arg = Qt; | |
| 2759 int count = 0; /* for GET_BUFFER_WINDOW_COUNT */ | |
| 2760 /* #### I think the change of "precomputing" last_window and next_window | |
| 2761 * #### catch the lossage this is meant(?) to punt on... | |
| 2762 */ | |
| 2763 int lose_lose = 0; | |
| 2764 Lisp_Object devcons, concons; | |
| 2765 | |
| 2766 /* If we're only looping through windows on a particular frame, | |
| 2767 FRAME points to that frame. If we're looping through windows | |
| 2768 on all frames, FRAME is 0. */ | |
| 444 | 2769 if (FRAMEP (which_frames)) |
| 2770 frame = XFRAME (which_frames); | |
| 2771 else if (NILP (which_frames)) | |
| 428 | 2772 frame = selected_frame (); |
| 2773 else | |
| 2774 frame = 0; | |
| 442 | 2775 |
| 2776 /* FRAME_ARG is Qlambda to stick to one frame, | |
| 2777 Qvisible to consider all visible frames, | |
| 2778 or Qt otherwise. */ | |
| 428 | 2779 if (frame) |
| 2780 frame_arg = Qlambda; | |
| 444 | 2781 else if (ZEROP (which_frames)) |
| 2782 frame_arg = which_frames; | |
| 2783 else if (EQ (which_frames, Qvisible)) | |
| 2784 frame_arg = which_frames; | |
| 428 | 2785 |
| 2786 DEVICE_LOOP_NO_BREAK (devcons, concons) | |
| 2787 { | |
| 2788 Lisp_Object device = XCAR (devcons); | |
| 2789 Lisp_Object the_frame; | |
| 2790 | |
| 2791 if (frame) | |
| 793 | 2792 the_frame = wrap_frame (frame); |
| 428 | 2793 else |
| 2794 the_frame = DEVICE_SELECTED_FRAME (XDEVICE (device)); | |
| 2795 | |
| 2796 if (NILP (the_frame)) | |
| 2797 continue; | |
| 2798 | |
| 444 | 2799 if (!device_matches_device_spec (device, |
| 2800 NILP (which_devices) ? | |
| 2801 FRAME_CONSOLE (XFRAME (the_frame)) : | |
| 2802 which_devices)) | |
| 428 | 2803 continue; |
| 2804 | |
| 2805 /* Pick a window to start with. */ | |
| 2806 if (WINDOWP (obj)) | |
| 2807 w = obj; | |
| 2808 else | |
| 2809 w = FRAME_SELECTED_WINDOW (XFRAME (the_frame)); | |
| 2810 | |
| 2811 /* Figure out the last window we're going to mess with. Since | |
| 2812 Fnext_window, given the same options, is guaranteed to go in a | |
| 2813 ring, we can just use Fprevious_window to find the last one. | |
| 2814 | |
| 2815 We can't just wait until we hit the first window again, | |
| 2816 because it might be deleted. */ | |
| 2817 | |
| 707 | 2818 last_window = Fprevious_window (w, mini ? Qt : Qnil, frame_arg, device); |
| 428 | 2819 |
| 2820 best_window = Qnil; | |
| 2821 for (;;) | |
| 2822 { | |
| 2823 struct window *p = XWINDOW (w); | |
| 2824 | |
| 2825 /* Pick the next window now, since some operations will delete | |
| 2826 the current window. */ | |
| 442 | 2827 next_window = Fnext_window (w, mini ? Qt : Qnil, frame_arg, device); |
| 428 | 2828 |
| 2829 /* #### Still needed ?? */ | |
| 2830 /* Given the outstanding quality of the rest of this code, | |
| 2831 I feel no shame about putting this piece of shit in. */ | |
| 2832 if (++lose_lose >= 500) | |
| 707 | 2833 { |
| 2500 | 2834 /* Call to ABORT() added by Darryl Okahata (16 Nov. 2001), |
| 707 | 2835 at Ben's request, to catch any remaining bugs. |
| 2836 | |
| 2837 If you find that XEmacs is aborting here, and you | |
| 2838 need to be up and running ASAP, it should be safe to | |
| 2500 | 2839 comment out the following ABORT(), as long as you |
| 707 | 2840 leave the "break;" alone. */ |
| 2500 | 2841 ABORT(); |
| 707 | 2842 break; /* <--- KEEP THIS HERE! Do not delete! */ |
| 2843 } | |
| 428 | 2844 |
| 2845 /* Note that we do not pay attention here to whether | |
| 2846 the frame is visible, since Fnext_window skips non-visible frames | |
| 2847 if that is desired, under the control of frame_arg. */ | |
| 2848 if (! MINI_WINDOW_P (p) | |
| 2849 || (mini && minibuf_level > 0)) | |
| 2850 switch (type) | |
| 2851 { | |
| 2852 case GET_BUFFER_WINDOW: | |
| 2853 { | |
| 2854 if (XBUFFER (p->buffer) == XBUFFER (obj)) | |
| 2855 return w; | |
| 2856 break; | |
| 2857 } | |
| 2858 | |
| 2859 case GET_BUFFER_WINDOW_COUNT: | |
| 2860 { | |
| 2861 if (XBUFFER (p->buffer) == XBUFFER (obj)) | |
| 2862 count++; | |
| 2863 break; | |
| 2864 } | |
| 2865 | |
| 2866 case GET_LRU_WINDOW: | |
| 2867 { | |
| 2868 /* t as arg means consider only full-width windows */ | |
| 2869 if (!NILP (obj) | |
| 2870 && !window_full_width_p (p)) | |
| 2871 break; | |
| 2872 /* Ignore dedicated windows and minibuffers. */ | |
| 2873 if (MINI_WINDOW_P (p) | |
| 2874 || (dedicated_too ? 0 : !NILP (p->dedicated))) | |
| 2875 break; | |
| 2876 if (NILP (best_window) | |
| 2877 || (XINT (XWINDOW (best_window)->use_time) | |
| 2878 > XINT (p->use_time))) | |
| 2879 best_window = w; | |
| 2880 break; | |
| 2881 } | |
| 2882 | |
| 2883 case GET_BUFFER_MRU_WINDOW: | |
| 2884 { | |
| 2885 /* #### what about the first check in GET_LRU_WINDOW? */ | |
| 2886 /* Ignore dedicated windows and minibuffers. */ | |
| 2887 if (MINI_WINDOW_P (p) | |
| 2888 || (dedicated_too ? 0 : !NILP (p->dedicated))) | |
| 2889 break; | |
| 2890 | |
| 2891 if (XBUFFER (p->buffer) == XBUFFER (obj)) | |
| 2892 { | |
| 2893 if (NILP (best_window) | |
| 2894 || (XINT (XWINDOW (best_window)->use_time) | |
| 2895 < XINT (p->use_time))) | |
| 2896 best_window = w; | |
| 2897 } | |
| 2898 break; | |
| 2899 } | |
| 2900 | |
| 2901 case DELETE_OTHER_WINDOWS: | |
| 2902 { | |
| 2903 /* Don't delete the last window on a frame; this can | |
| 2904 happen when the minibuffer is selected, and would | |
| 2905 cause the frame to be deleted. */ | |
| 2906 if (p != XWINDOW (obj) && !TOP_LEVEL_WINDOW_P (XWINDOW (w))) | |
| 2907 Fdelete_window (w, Qnil); | |
| 2908 break; | |
| 2909 } | |
| 2910 | |
| 2911 case DELETE_BUFFER_WINDOWS: | |
| 2912 { | |
| 2913 if (EQ (p->buffer, obj)) | |
| 2914 { | |
| 2915 struct frame *f = XFRAME (WINDOW_FRAME (p)); | |
| 2916 | |
| 2917 /* If this window is dedicated, and in a frame | |
| 2918 of its own, kill the frame. */ | |
| 2919 if (EQ (w, FRAME_ROOT_WINDOW (f)) | |
| 2920 && !NILP (p->dedicated) | |
| 1979 | 2921 && (allow_deletion_of_last_visible_frame |
| 2922 || other_visible_frames (f))) | |
| 428 | 2923 { |
| 2924 /* Skip the other windows on this frame. | |
| 2925 There might be one, the minibuffer! */ | |
| 2926 if (! EQ (w, last_window)) | |
| 2927 while (f == XFRAME (WINDOW_FRAME | |
| 2928 (XWINDOW (next_window)))) | |
| 2929 { | |
| 2930 /* As we go, check for the end of the | |
| 2931 loop. We mustn't start going | |
| 2932 around a second time. */ | |
| 2933 if (EQ (next_window, last_window)) | |
| 2934 { | |
| 2935 last_window = w; | |
| 2936 break; | |
| 2937 } | |
| 2938 next_window = Fnext_window (next_window, | |
| 2939 mini ? Qt : Qnil, | |
| 2940 frame_arg, Qt); | |
| 2941 } | |
| 2942 /* Now we can safely delete the frame. */ | |
| 2943 Fdelete_frame (WINDOW_FRAME (p), Qnil); | |
| 2944 } | |
| 2945 else | |
| 2946 /* If we're deleting the buffer displayed in | |
| 2947 the only window on the frame, find a new | |
| 2948 buffer to display there. */ | |
| 2949 if (NILP (p->parent)) | |
| 2950 { | |
| 2951 Lisp_Object new_buffer; | |
| 2952 new_buffer = Fother_buffer (obj, Qnil, Qnil); | |
| 2953 if (NILP (new_buffer)) | |
| 2954 new_buffer = Fget_buffer_create (QSscratch); | |
| 440 | 2955 Fset_window_buffer (w, new_buffer, Qnil); |
| 428 | 2956 if (EQ (w, Fselected_window (Qnil))) |
| 2957 Fset_buffer (p->buffer); | |
| 2958 } | |
| 2959 else | |
| 2960 Fdelete_window (w, Qnil); | |
| 2961 } | |
| 2962 break; | |
| 2963 } | |
| 2964 | |
| 2965 case GET_LARGEST_WINDOW: | |
| 2966 { | |
| 2967 /* Ignore dedicated windows and minibuffers. */ | |
| 2968 if (MINI_WINDOW_P (p) | |
| 2969 || (dedicated_too ? 0 : !NILP (p->dedicated))) | |
| 2970 break; | |
| 2971 { | |
| 2972 /* write the check as follows to avoid tripping | |
| 2973 error_check_window() --ben */ | |
| 2974 struct window *b = NILP (best_window) ? 0 : | |
| 2975 XWINDOW (best_window); | |
| 2976 if (NILP (best_window) | |
| 2977 || ((WINDOW_HEIGHT (p) * WINDOW_WIDTH (p)) | |
| 2978 > (WINDOW_HEIGHT (b) * WINDOW_WIDTH (b)))) | |
| 2979 best_window = w; | |
| 2980 } | |
| 2981 break; | |
| 2982 } | |
| 2983 | |
| 2984 default: | |
| 2500 | 2985 ABORT (); |
| 428 | 2986 } |
| 2987 | |
| 2988 if (EQ (w, last_window)) | |
| 2989 break; | |
| 2990 | |
| 2991 w = next_window; | |
| 2992 } | |
| 2993 } | |
| 2994 | |
| 2995 return type == GET_BUFFER_WINDOW_COUNT ? make_int (count) : best_window; | |
| 2996 } | |
| 2997 | |
| 2998 #if 0 /* not currently used */ | |
| 2999 | |
| 3000 int | |
| 3001 buffer_window_count (struct buffer *b, struct frame *f) | |
| 3002 { | |
| 3003 Lisp_Object buffer, frame; | |
| 3004 | |
| 793 | 3005 frame = wrap_frame (f); |
| 3006 buffer = wrap_buffer (b); | |
| 428 | 3007 |
| 3008 return XINT (window_loop (GET_BUFFER_WINDOW_COUNT, buffer, 0, frame, 1, | |
| 3009 Qnil)); | |
| 3010 } | |
| 3011 | |
| 3012 int | |
| 3013 buffer_window_mru (struct window *w) | |
| 3014 { | |
| 3015 Lisp_Object window = | |
| 3016 window_loop (GET_BUFFER_MRU_WINDOW, w->buffer, 0, w->frame, 1, Qnil); | |
| 3017 | |
| 3018 if (NILP (window)) | |
| 3019 return 0; | |
| 3020 else if (XWINDOW (window) == w) | |
| 3021 return 1; | |
| 3022 else | |
| 3023 return 0; | |
| 3024 } | |
| 3025 | |
| 3026 #endif | |
| 3027 | |
| 3028 | |
| 3029 DEFUN ("get-lru-window", Fget_lru_window, 0, 2, 0, /* | |
| 3030 Return the window least recently selected or used for display. | |
| 444 | 3031 |
| 3032 By default, only the windows in the selected frame are considered. | |
| 3033 The optional argument WHICH-FRAMES changes this behavior: | |
| 3034 If optional argument WHICH-FRAMES is `visible', search all visible frames. | |
| 3035 If WHICH-FRAMES is 0, search all visible and iconified frames. | |
| 3036 If WHICH-FRAMES is t, search all frames. | |
| 3037 If WHICH-FRAMES is nil, search only the selected frame. | |
| 3038 If WHICH-FRAMES is a frame, search only that frame. | |
| 3039 | |
| 3040 The optional argument WHICH-DEVICES further clarifies on which devices | |
| 3041 to search for frames as specified by WHICH-FRAMES. This value is only | |
| 3042 meaningful if WHICH-FRAMES is non-nil. | |
| 3043 If nil or omitted, search all devices on the selected console. | |
| 3044 If a device, only search that device. | |
| 3045 If a console, search all devices on that console. | |
| 3046 If a device type, search all devices of that type. | |
| 3047 If `window-system', search all devices on window-system consoles. | |
| 3048 Any other non-nil value means search all devices. | |
| 428 | 3049 */ |
| 444 | 3050 (which_frames, which_devices)) |
| 428 | 3051 { |
| 3052 Lisp_Object w; | |
| 3053 /* First try for a non-dedicated window that is full-width */ | |
| 444 | 3054 w = window_loop (GET_LRU_WINDOW, Qt, 0, which_frames, 0, which_devices); |
| 428 | 3055 if (!NILP (w) && !EQ (w, Fselected_window (Qnil))) |
| 3056 return w; | |
| 3057 | |
| 3058 /* Then try for any non-dedicated window */ | |
| 444 | 3059 w = window_loop (GET_LRU_WINDOW, Qnil, 0, which_frames, 0, which_devices); |
| 428 | 3060 if (!NILP (w) && !EQ (w, Fselected_window (Qnil))) |
| 3061 return w; | |
| 3062 | |
| 3063 #if 0 | |
| 3064 /* FSFmacs never returns a dedicated window here. If we do, | |
| 3065 it makes `display-buffer' not work right. #### All of this | |
| 3066 shit is so disgusting and awful that it needs to be rethought | |
| 3067 from scratch. */ | |
| 3068 /* then try for a dedicated window that is full-width */ | |
| 444 | 3069 w = window_loop (GET_LRU_WINDOW, Qt, 0, which_frames, 1, which_devices); |
| 428 | 3070 if (!NILP (w) && !EQ (w, Fselected_window (Qnil))) |
| 3071 return w; | |
| 3072 | |
| 3073 /* If none of them, then all windows, dedicated or not. */ | |
| 444 | 3074 w = window_loop (GET_LRU_WINDOW, Qnil, 0, which_frames, 1, which_devices); |
| 428 | 3075 |
| 3076 /* At this point we damn well better have found something. */ | |
| 2500 | 3077 if (NILP (w)) ABORT (); |
| 428 | 3078 #endif |
| 3079 | |
| 3080 return w; | |
| 3081 } | |
| 3082 | |
| 3083 DEFUN ("get-largest-window", Fget_largest_window, 0, 2, 0, /* | |
| 3084 Return the window largest in area. | |
| 444 | 3085 |
| 3086 By default, only the windows in the selected frame are considered. | |
| 3087 The optional argument WHICH-FRAMES changes this behavior: | |
| 3088 If optional argument WHICH-FRAMES is `visible', search all visible frames. | |
| 3089 If WHICH-FRAMES is 0, search all visible and iconified frames. | |
| 3090 If WHICH-FRAMES is t, search all frames. | |
| 3091 If WHICH-FRAMES is nil, search only the selected frame. | |
| 3092 If WHICH-FRAMES is a frame, search only that frame. | |
| 3093 | |
| 3094 The optional argument WHICH-DEVICES further clarifies on which devices | |
| 3095 to search for frames as specified by WHICH-FRAMES. This value is only | |
| 3096 meaningful if WHICH-FRAMES is non-nil. | |
| 3097 If nil or omitted, search all devices on the selected console. | |
| 3098 If a device, only search that device. | |
| 3099 If a console, search all devices on that console. | |
| 3100 If a device type, search all devices of that type. | |
| 3101 If `window-system', search all devices on window-system consoles. | |
| 3102 Any other non-nil value means search all devices. | |
| 428 | 3103 */ |
| 444 | 3104 (which_frames, which_devices)) |
| 428 | 3105 { |
| 3106 /* Don't search dedicated windows because FSFmacs doesn't. | |
| 3107 This stuff is all black magic so don't try to apply common | |
| 3108 sense to it. */ | |
| 444 | 3109 return window_loop (GET_LARGEST_WINDOW, Qnil, 0, |
| 3110 which_frames, 0, which_devices); | |
| 428 | 3111 } |
| 3112 | |
| 3113 DEFUN ("get-buffer-window", Fget_buffer_window, 1, 3, 0, /* | |
| 3114 Return a window currently displaying BUFFER, or nil if none. | |
| 444 | 3115 |
| 3116 By default, only the windows in the selected frame are considered. | |
| 3117 The optional argument WHICH-FRAMES changes this behavior: | |
| 3118 If optional argument WHICH-FRAMES is `visible', search all visible frames. | |
| 3119 If WHICH-FRAMES is 0, search all visible and iconified frames. | |
| 3120 If WHICH-FRAMES is t, search all frames. | |
| 3121 If WHICH-FRAMES is nil, search only the selected frame. | |
| 3122 If WHICH-FRAMES is a frame, search only that frame. | |
| 3123 | |
| 3124 The optional argument WHICH-DEVICES further clarifies on which devices | |
| 3125 to search for frames as specified by WHICH-FRAMES. This value is only | |
| 3126 meaningful if WHICH-FRAMES is non-nil. | |
| 3127 If nil or omitted, search all devices on the selected console. | |
| 3128 If a device, only search that device. | |
| 3129 If a console, search all devices on that console. | |
| 3130 If a device type, search all devices of that type. | |
| 3131 If `window-system', search all devices on window-system consoles. | |
| 3132 Any other non-nil value means search all devices. | |
| 428 | 3133 */ |
| 444 | 3134 (buffer, which_frames, which_devices)) |
| 428 | 3135 { |
| 3136 buffer = Fget_buffer (buffer); | |
| 3137 if (BUFFERP (buffer)) | |
| 3138 /* Search dedicated windows too. (Doesn't matter here anyway.) */ | |
| 444 | 3139 return window_loop (GET_BUFFER_WINDOW, buffer, 1, |
| 3140 which_frames, 1, which_devices); | |
| 428 | 3141 else |
| 3142 return Qnil; | |
| 3143 } | |
| 3144 | |
| 3145 /* These functions used to be `buffer-left-margin-pixel-width', etc. | |
| 3146 but there is no sensible way to implement those functions, since | |
| 3147 you can't in general derive a window from a buffer. */ | |
| 3148 | |
| 3149 DEFUN ("window-left-margin-pixel-width", Fwindow_left_margin_pixel_width, | |
| 3150 0, 1, 0, /* | |
| 3151 Return the width in pixels of the left outside margin of window WINDOW. | |
| 3152 If WINDOW is nil, the selected window is assumed. | |
| 3153 */ | |
| 3154 (window)) | |
| 3155 { | |
| 3156 return make_int (window_left_margin_width (decode_window (window))); | |
| 3157 } | |
| 3158 | |
| 3159 DEFUN ("window-right-margin-pixel-width", Fwindow_right_margin_pixel_width, | |
| 3160 0, 1, 0, /* | |
| 3161 Return the width in pixels of the right outside margin of window WINDOW. | |
| 3162 If WINDOW is nil, the selected window is assumed. | |
| 3163 */ | |
| 3164 (window)) | |
| 3165 { | |
| 3166 return make_int (window_right_margin_width (decode_window (window))); | |
| 3167 } | |
| 3168 | |
| 3169 DEFUN ("delete-other-windows", Fdelete_other_windows, 0, 1, "", /* | |
| 3170 Make WINDOW (or the selected window) fill its frame. | |
| 3171 Only the frame WINDOW is on is affected. | |
| 3172 This function tries to reduce display jumps | |
| 3173 by keeping the text previously visible in WINDOW | |
| 3174 in the same place on the frame. Doing this depends on | |
| 3175 the value of (window-start WINDOW), so if calling this function | |
| 3176 in a program gives strange scrolling, make sure the window-start | |
| 3177 value is reasonable when this function is called. | |
| 3178 */ | |
| 3179 (window)) | |
| 3180 { | |
| 3181 struct window *w = decode_window (window); | |
| 1207 | 3182 struct buffer *b; |
| 665 | 3183 Charbpos start_pos; |
| 428 | 3184 int old_top = WINDOW_TOP (w); |
| 3185 | |
| 1207 | 3186 if (NILP (WINDOW_BUFFER (w))) |
| 3187 invalid_operation ("Can't delete other windows of combination", window); | |
| 3188 | |
| 793 | 3189 window = wrap_window (w); |
| 1207 | 3190 b = XBUFFER (WINDOW_BUFFER (w)); |
| 428 | 3191 |
| 3192 if (MINI_WINDOW_P (w) && old_top > 0) | |
| 563 | 3193 invalid_operation ("Can't expand minibuffer to full frame", Qunbound); |
| 428 | 3194 |
| 3195 /* Ignore dedicated windows. */ | |
| 3196 window_loop (DELETE_OTHER_WINDOWS, window, 0, w->frame, 0, Qnil); | |
| 3197 | |
| 3198 start_pos = marker_position (w->start[CURRENT_DISP]); | |
| 3199 | |
| 3200 /* Try to minimize scrolling, by setting the window start to the | |
| 3201 point which will cause the text at the old window start to be at | |
| 3202 the same place on the frame. But don't try to do this if the | |
| 3203 window start is outside the visible portion (as might happen when | |
| 3204 the display is not current, due to typeahead). */ | |
| 3205 if (start_pos >= BUF_BEGV (b) && start_pos <= BUF_ZV (b) | |
| 3206 && !MINI_WINDOW_P (w)) | |
| 3207 { | |
| 665 | 3208 Charbpos new_start = start_with_line_at_pixpos (w, start_pos, old_top); |
| 428 | 3209 |
| 3210 if (new_start >= BUF_BEGV (b) && new_start <= BUF_ZV (b)) | |
| 3211 { | |
| 3212 Fset_marker (w->start[CURRENT_DISP], make_int (new_start), | |
| 3213 w->buffer); | |
| 3214 w->start_at_line_beg = beginning_of_line_p (b, new_start); | |
| 3215 } | |
| 3216 /* We need to do this, so that the window-scroll-functions | |
| 3217 get called. */ | |
| 3218 w->force_start = 1; | |
| 3219 } | |
| 3220 | |
| 3221 return Qnil; | |
| 3222 } | |
| 3223 | |
| 3224 DEFUN ("delete-windows-on", Fdelete_windows_on, 1, 3, | |
| 3225 "bDelete windows on (buffer): ", /* | |
| 3226 Delete all windows showing BUFFER. | |
| 444 | 3227 |
| 3228 Optional second argument WHICH-FRAMES controls which frames are affected. | |
| 428 | 3229 If nil or omitted, delete all windows showing BUFFER in any frame. |
| 3230 If t, delete only windows showing BUFFER in the selected frame. | |
| 3231 If `visible', delete all windows showing BUFFER in any visible frame. | |
| 3232 If a frame, delete only windows showing BUFFER in that frame. | |
| 444 | 3233 Warning: WHICH-FRAMES has the same meaning as with `next-window', |
| 3234 except that the meanings of nil and t are reversed. | |
| 3235 | |
| 3236 The optional third argument WHICH-DEVICES further clarifies on which | |
| 3237 devices to search for frames as specified by WHICH-FRAMES. This value | |
| 3238 is only meaningful if WHICH-FRAMES is not t. | |
| 3239 If nil or omitted, search only the selected console. | |
| 3240 If a device, only search that device. | |
| 3241 If a console, search all devices on that console. | |
| 3242 If a device type, search all devices of that type. | |
| 3243 If `window-system', search all devices on a window system. | |
| 3244 Any other non-nil value means search all devices. | |
| 428 | 3245 */ |
| 444 | 3246 (buffer, which_frames, which_devices)) |
| 428 | 3247 { |
| 3248 /* This function can GC */ | |
| 444 | 3249 buffer = Fget_buffer (buffer); |
| 3250 CHECK_BUFFER (buffer); | |
| 3251 | |
| 3252 /* WHICH-FRAMES values t and nil mean the opposite of what | |
| 3253 window_loop expects. */ | |
| 3254 if (EQ (which_frames, Qnil)) | |
| 3255 which_frames = Qt; | |
| 3256 else if (EQ (which_frames, Qt)) | |
| 3257 which_frames = Qnil; | |
| 3258 | |
| 3259 /* Ignore dedicated windows. */ | |
| 3260 window_loop (DELETE_BUFFER_WINDOWS, buffer, 0, | |
| 3261 which_frames, 0, which_devices); | |
| 428 | 3262 return Qnil; |
| 3263 } | |
| 3264 | |
| 448 | 3265 static Lisp_Object |
| 3266 list_windows (struct window *w, Lisp_Object value) | |
| 3267 { | |
| 3268 for (;;) | |
| 3269 { | |
| 3270 if (!NILP (w->hchild)) | |
| 3271 value = list_windows (XWINDOW (w->hchild), value); | |
| 3272 else if (!NILP (w->vchild)) | |
| 3273 value = list_windows (XWINDOW (w->vchild), value); | |
| 3274 else | |
| 3275 { | |
| 793 | 3276 Lisp_Object window = wrap_window (w); |
| 3277 | |
| 448 | 3278 value = Fcons (window, value); |
| 3279 } | |
| 3280 if (NILP (w->next)) | |
| 3281 break; | |
| 3282 w = XWINDOW (w->next); | |
| 3283 } | |
| 3284 return value; | |
| 3285 } | |
| 3286 | |
| 3287 static Lisp_Object | |
| 3288 list_all_windows (Lisp_Object frame_spec, Lisp_Object device_spec) | |
| 3289 { | |
| 3290 Lisp_Object devcons, concons; | |
| 3291 Lisp_Object retval = Qnil; | |
| 3292 | |
| 3293 DEVICE_LOOP_NO_BREAK (devcons, concons) | |
| 3294 { | |
| 3295 Lisp_Object frame_list, the_window; | |
| 3296 Lisp_Object device, tail; | |
| 3297 | |
| 3298 device = XCAR (devcons); | |
| 3299 frame_list = DEVICE_FRAME_LIST (XDEVICE (device)); | |
| 3300 | |
| 3301 LIST_LOOP (tail, frame_list) | |
| 3302 { | |
| 3303 if ((NILP (frame_spec) | |
| 3304 && !EQ (XCAR (tail), DEVICE_SELECTED_FRAME (XDEVICE (device)))) | |
| 3305 || (EQ (frame_spec, Qvisible) | |
| 3306 && !FRAME_VISIBLE_P (XFRAME (XCAR (tail)))) | |
| 3307 || (FRAMEP (frame_spec) | |
| 3308 && !EQ (frame_spec, XCAR (tail))) | |
| 3309 || (!NILP (frame_spec) | |
| 3310 && !device_matches_device_spec (device, | |
| 3311 NILP (device_spec) ? | |
| 3312 Vselected_console : | |
| 3313 device_spec))) | |
| 3314 continue; | |
| 3315 the_window = FRAME_ROOT_WINDOW (XFRAME (XCAR (tail))); | |
| 3316 retval = list_windows (XWINDOW (the_window), retval); | |
| 3317 } | |
| 3318 } | |
| 3319 return Fnreverse (retval); | |
| 3320 } | |
| 3321 | |
| 444 | 3322 DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows, 1, 3, |
| 428 | 3323 "bReplace buffer in windows: ", /* |
| 3324 Replace BUFFER with some other buffer in all windows showing it. | |
| 444 | 3325 |
| 3326 Optional second argument WHICH-FRAMES controls which frames are affected. | |
| 3327 If nil or omitted, all frames are affected. | |
| 3328 If t, only the selected frame is affected. | |
| 3329 If `visible', all visible frames are affected. | |
| 3330 If a frame, only that frame is affected. | |
| 3331 Warning: WHICH-FRAMES has the same meaning as with `next-window', | |
| 3332 except that the meanings of nil and t are reversed. | |
| 3333 | |
| 3334 The optional third argument WHICH-DEVICES further clarifies on which | |
| 3335 devices to search for frames as specified by WHICH-FRAMES. This value | |
| 3336 is only meaningful if WHICH-FRAMES is not t. | |
| 3337 If nil or omitted, search only the selected console. | |
| 3338 If a device, only search that device. | |
| 3339 If a console, search all devices on that console. | |
| 3340 If a device type, search all devices of that type. | |
| 3341 If `window-system', search all devices on a window system. | |
| 3342 Any other non-nil value means search all devices. | |
| 428 | 3343 */ |
| 444 | 3344 (buffer, which_frames, which_devices)) |
| 428 | 3345 { |
| 3346 /* This function can GC */ | |
| 448 | 3347 Lisp_Object window_list; |
| 3348 Lisp_Object tail; | |
| 3349 struct gcpro gcpro1, gcpro2; | |
| 3350 | |
| 444 | 3351 if (EQ (which_frames, Qnil)) |
| 3352 which_frames = Qt; | |
| 3353 else if (EQ (which_frames, Qt)) | |
| 3354 which_frames = Qnil; | |
| 448 | 3355 window_list = list_all_windows (which_frames, which_devices); |
| 3356 | |
| 3357 buffer = Fget_buffer (buffer); | |
| 3358 CHECK_BUFFER (buffer); | |
| 3359 | |
| 3360 GCPRO2 (window_list, buffer); | |
| 3361 LIST_LOOP (tail, window_list) | |
| 3362 { | |
| 3363 Lisp_Object window = XCAR (tail); | |
| 3364 if (!MINI_WINDOW_P (XWINDOW (window)) | |
| 3365 && EQ (XWINDOW (window)->buffer, buffer)) | |
| 3366 { | |
| 3367 Lisp_Object another_buffer = Fother_buffer (buffer, Qnil, Qnil); | |
| 3368 Lisp_Object frame = WINDOW_FRAME (XWINDOW (window)); | |
| 3369 if (NILP (another_buffer)) | |
| 3370 another_buffer = Fget_buffer_create (QSscratch); | |
| 3371 if (!NILP (XWINDOW (window)->dedicated) | |
| 3372 && EQ (window, | |
| 3373 FRAME_ROOT_WINDOW (XFRAME (frame))) | |
| 1979 | 3374 && (allow_deletion_of_last_visible_frame |
| 3375 || other_visible_frames (XFRAME (frame)))) | |
| 448 | 3376 { |
| 3377 delete_frame_internal (XFRAME (frame), 0, 0, 0); /* GC */ | |
| 3378 } | |
| 3379 else | |
| 3380 { | |
| 3381 Fset_window_buffer (window, another_buffer, Qnil); | |
| 3382 if (EQ (window, Fselected_window (Qnil))) | |
| 3383 Fset_buffer (XWINDOW (window)->buffer); | |
| 3384 } | |
| 3385 } | |
| 3386 } | |
| 3387 UNGCPRO; | |
| 428 | 3388 return Qnil; |
| 3389 } | |
| 3390 | |
| 3391 /* The smallest acceptable dimensions for a window. Anything smaller | |
| 3392 might crash Emacs. */ | |
| 3393 #define MIN_SAFE_WINDOW_WIDTH (2) | |
| 3394 #define MIN_SAFE_WINDOW_HEIGHT (2) | |
| 3395 | |
| 3396 /* Make sure that window_min_height and window_min_width are | |
| 3397 not too small; if they are, set them to safe minima. */ | |
| 3398 | |
| 3399 static void | |
| 3400 check_min_window_sizes (void) | |
| 3401 { | |
| 3402 /* Smaller values might permit a crash. */ | |
| 3403 if (window_min_width < MIN_SAFE_WINDOW_WIDTH) | |
| 3404 window_min_width = MIN_SAFE_WINDOW_WIDTH; | |
| 3405 if (window_min_height < MIN_SAFE_WINDOW_HEIGHT) | |
| 3406 window_min_height = MIN_SAFE_WINDOW_HEIGHT; | |
| 3407 } | |
| 3408 | |
| 440 | 3409 static int |
| 3410 frame_min_height (struct frame *frame) | |
| 3411 { | |
| 3412 /* For height, we have to see whether the frame has a minibuffer, and | |
| 3413 whether it wants a modeline. */ | |
| 3414 return (FRAME_MINIBUF_ONLY_P (frame) ? MIN_SAFE_WINDOW_HEIGHT - 1 | |
| 3415 : (! FRAME_HAS_MINIBUF_P (frame)) ? MIN_SAFE_WINDOW_HEIGHT | |
| 3416 : 2 * MIN_SAFE_WINDOW_HEIGHT - 1); | |
| 3417 } | |
| 3418 | |
| 3419 /* Return non-zero if both frame sizes are less than or equal to | |
| 3420 minimal allowed values. ROWS and COLS are in characters */ | |
| 3421 int | |
| 3422 frame_size_valid_p (struct frame *frame, int rows, int cols) | |
| 3423 { | |
| 3424 return (rows >= frame_min_height (frame) | |
| 3425 && cols >= MIN_SAFE_WINDOW_WIDTH); | |
| 3426 } | |
| 3427 | |
| 3428 /* Return non-zero if both frame sizes are less than or equal to | |
| 3429 minimal allowed values. WIDTH and HEIGHT are in pixels */ | |
| 3430 int | |
| 3431 frame_pixsize_valid_p (struct frame *frame, int width, int height) | |
| 3432 { | |
| 3433 int rows, cols; | |
| 3434 pixel_to_real_char_size (frame, width, height, &cols, &rows); | |
| 3435 return frame_size_valid_p (frame, rows, cols); | |
| 3436 } | |
| 3437 | |
| 428 | 3438 /* If *ROWS or *COLS are too small a size for FRAME, set them to the |
| 3439 minimum allowable size. */ | |
| 3440 void | |
| 3441 check_frame_size (struct frame *frame, int *rows, int *cols) | |
| 3442 { | |
| 440 | 3443 int min_height = frame_min_height (frame); |
| 428 | 3444 |
| 3445 if (*rows < min_height) | |
| 3446 *rows = min_height; | |
| 3447 if (*cols < MIN_SAFE_WINDOW_WIDTH) | |
| 3448 *cols = MIN_SAFE_WINDOW_WIDTH; | |
| 3449 } | |
| 3450 | |
| 3451 /* Normally the window is deleted if it gets too small. | |
| 3452 nodelete nonzero means do not do this. | |
| 3453 (The caller should check later and do so if appropriate) */ | |
| 3454 static void | |
| 3455 set_window_pixsize (Lisp_Object window, int new_pixsize, int nodelete, | |
| 3456 int set_height) | |
| 3457 { | |
| 3458 struct window *w = XWINDOW (window); | |
| 3459 struct frame *f = XFRAME (w->frame); | |
| 3460 struct window *c; | |
| 3461 int old_pixsize = (set_height ? WINDOW_HEIGHT (w) : WINDOW_WIDTH (w)); | |
| 3462 Lisp_Object child, minor_kid, major_kid; | |
| 3463 int minsize; | |
| 3464 int line_size; | |
| 3465 int defheight, defwidth; | |
| 3466 | |
| 3467 /* #### This is very likely incorrect and instead the char_to_pixel_ | |
| 3468 functions should be called. */ | |
| 3469 default_face_height_and_width (window, &defheight, &defwidth); | |
| 3470 line_size = (set_height ? defheight : defwidth); | |
| 3471 | |
| 3472 check_min_window_sizes (); | |
| 3473 | |
| 3474 minsize = (set_height ? window_min_height : window_min_width); | |
| 3475 minsize *= line_size; | |
| 3476 | |
| 3477 if (!nodelete | |
| 3478 && !TOP_LEVEL_WINDOW_P (w) | |
| 3479 && new_pixsize < minsize) | |
| 3480 { | |
| 3481 Fdelete_window (window, Qnil); | |
| 3482 return; | |
| 3483 } | |
| 3484 | |
| 3485 SET_LAST_MODIFIED (w, 0); | |
| 3486 SET_LAST_FACECHANGE (w); | |
| 3487 MARK_FRAME_WINDOWS_STRUCTURE_CHANGED (f); /* multiple windows affected */ | |
| 3488 if (set_height) | |
| 3489 { | |
| 3490 WINDOW_HEIGHT (w) = new_pixsize; | |
| 3491 major_kid = w->vchild; | |
| 3492 minor_kid = w->hchild; | |
| 3493 } | |
| 3494 else | |
| 3495 { | |
| 3496 WINDOW_WIDTH (w) = new_pixsize; | |
| 3497 major_kid = w->hchild; | |
| 3498 minor_kid = w->vchild; | |
| 3499 } | |
| 3500 | |
| 3501 if (!NILP (minor_kid)) | |
| 3502 { | |
| 3503 for (child = minor_kid; !NILP (child); child = XWINDOW (child)->next) | |
| 3504 { | |
| 3505 if (set_height) | |
| 3506 WINDOW_TOP (XWINDOW (child)) = WINDOW_TOP (w); | |
| 3507 else | |
| 3508 WINDOW_LEFT (XWINDOW (child)) = WINDOW_LEFT (w); | |
| 3509 | |
| 3510 set_window_pixsize (child, new_pixsize, nodelete, set_height); | |
| 3511 } | |
| 3512 } | |
| 3513 else if (!NILP (major_kid)) | |
| 3514 { | |
| 3515 int last_pos, last_old_pos, pos, old_pos, first; | |
| 3516 int pixel_adj_left = new_pixsize - old_pixsize; | |
| 3517 int div_val = old_pixsize << 1; | |
| 3518 | |
| 3519 /* | |
| 3520 * Previously we bailed out here if there was no size change. | |
| 3521 * (pixel_adj_left == 0) But this broke toolbar updates. If a | |
| 3522 * toolbar appears or disappears, windows may not change size, | |
| 3523 * but their top and left coordinates need to be updated. | |
| 3524 * | |
| 3525 * So we don't bail until after the loop below. | |
| 3526 */ | |
| 3527 | |
| 3528 last_pos = first = (set_height ? WINDOW_TOP (w) : WINDOW_LEFT (w)); | |
| 3529 last_old_pos = 0; | |
| 3530 | |
| 3531 for (child = major_kid; !NILP (child); child = c->next) | |
| 3532 { | |
| 3533 c = XWINDOW (child); | |
| 3534 | |
| 3535 if (set_height) | |
| 3536 { | |
| 3537 old_pos = last_old_pos + WINDOW_HEIGHT (c); | |
| 3538 WINDOW_TOP (c) = last_pos; | |
| 3539 } | |
| 3540 else | |
| 3541 { | |
| 3542 old_pos = last_old_pos + WINDOW_WIDTH (c); | |
| 3543 WINDOW_LEFT (c) = last_pos; | |
| 3544 } | |
| 3545 | |
| 3546 pos = (((old_pos * new_pixsize) << 1) + old_pixsize) / div_val; | |
| 3547 /* All but the last window should have a height which is | |
| 3548 a multiple of the default line height. */ | |
| 3549 if (!NILP (c->next)) | |
| 3550 pos = (pos / line_size) * line_size; | |
| 3551 | |
| 3552 /* Avoid confusion: don't delete child if it becomes too small */ | |
| 3553 set_window_pixsize (child, pos + first - last_pos, 1, set_height); | |
| 3554 | |
| 3555 last_pos = pos + first; | |
| 3556 last_old_pos = old_pos; | |
| 3557 } | |
| 3558 | |
| 3559 /* Sometimes we may get called with our old size. In that case | |
| 3560 we don't need to do anything else. */ | |
| 3561 if (!pixel_adj_left) | |
| 3562 return; | |
| 3563 | |
| 3564 /* Now delete any children that became too small. */ | |
| 3565 if (!nodelete) | |
| 3566 for (child = major_kid; !NILP (child); child = XWINDOW (child)->next) | |
| 3567 { | |
| 3568 if (set_height) | |
| 3569 set_window_pixheight (child, WINDOW_HEIGHT (XWINDOW (child)), 0); | |
| 3570 else | |
| 3571 set_window_pixwidth (child, WINDOW_WIDTH (XWINDOW (child)), 0); | |
| 3572 } | |
| 3573 } | |
| 3574 } | |
| 3575 | |
| 3576 /* Set the height of WINDOW and all its inferiors. */ | |
| 3577 void | |
| 3578 set_window_pixheight (Lisp_Object window, int new_pixheight, int nodelete) | |
| 3579 { | |
| 3580 set_window_pixsize (window, new_pixheight, nodelete, 1); | |
| 3581 } | |
| 3582 | |
| 3583 /* Recursively set width of WINDOW and its inferiors. */ | |
| 3584 void | |
| 3585 set_window_pixwidth (Lisp_Object window, int new_pixwidth, int nodelete) | |
| 3586 { | |
| 3587 set_window_pixsize (window, new_pixwidth, nodelete, 0); | |
| 3588 } | |
| 3589 | |
| 3590 | |
| 3591 static int window_select_count; | |
| 3592 | |
| 440 | 3593 DEFUN ("set-window-buffer", Fset_window_buffer, 2, 3, 0, /* |
| 428 | 3594 Make WINDOW display BUFFER as its contents. |
| 3595 BUFFER can be a buffer or buffer name. | |
| 440 | 3596 |
| 442 | 3597 With non-nil optional argument NORECORD, do not modify the |
| 440 | 3598 global or per-frame buffer ordering. |
| 428 | 3599 */ |
| 440 | 3600 (window, buffer, norecord)) |
| 428 | 3601 { |
| 3602 Lisp_Object tem; | |
| 3603 struct window *w = decode_window (window); | |
| 448 | 3604 int old_buffer_local_face_property = 0; |
| 428 | 3605 |
| 3606 buffer = Fget_buffer (buffer); | |
| 3607 CHECK_BUFFER (buffer); | |
| 3608 | |
| 3609 if (!BUFFER_LIVE_P (XBUFFER (buffer))) | |
| 563 | 3610 invalid_operation ("Attempt to display deleted buffer", Qunbound); |
| 428 | 3611 |
| 3612 tem = w->buffer; | |
| 3613 if (NILP (tem)) | |
| 563 | 3614 invalid_operation ("Window is deleted", Qunbound); |
| 428 | 3615 else if (EQ (tem, buffer)) |
| 3616 return Qnil; | |
| 3617 else if (! EQ (tem, Qt)) /* w->buffer is t when the window | |
| 3618 is first being set up. */ | |
| 3619 { | |
| 3620 if (!NILP (w->dedicated) && !EQ (tem, buffer)) | |
| 563 | 3621 signal_error (Qinvalid_operation, "Window is dedicated to buffer", tem); |
| 428 | 3622 |
| 448 | 3623 old_buffer_local_face_property = |
| 3624 XBUFFER (w->buffer)->buffer_local_face_property; | |
| 428 | 3625 unshow_buffer (w); |
| 3626 } | |
| 3627 | |
| 3628 w->buffer = buffer; | |
| 3629 w->window_end_pos[CURRENT_DISP] = 0; | |
| 3630 w->hscroll = 0; | |
| 3631 w->modeline_hscroll = 0; | |
| 844 | 3632 #if 0 /* pre point caches */ |
| 428 | 3633 Fset_marker (w->pointm[CURRENT_DISP], |
| 3634 make_int (BUF_PT (XBUFFER (buffer))), | |
| 3635 buffer); | |
| 3636 set_marker_restricted (w->start[CURRENT_DISP], | |
| 3637 make_int (XBUFFER (buffer)->last_window_start), | |
| 3638 buffer); | |
| 844 | 3639 #else |
| 3640 { | |
| 3641 Lisp_Object marker = Fgethash (buffer, w->saved_point_cache, Qnil); | |
| 3642 Lisp_Object newpoint = | |
| 3643 !NILP (marker) ? make_int (marker_position (marker)) : | |
| 3644 make_int (BUF_PT (XBUFFER (buffer))); | |
| 3645 /* Previously, we had in here set-window-point, which did one of the | |
| 3646 following two, but not both. However, that could result in pointm | |
| 3647 being in a different buffer from the window's buffer! Probably | |
| 3648 not a travesty since it always occurred when the window was | |
| 3649 selected, meaning its value of point was ignored in favor of the | |
| 3650 buffer's; but it tripped an assert() in unshow_buffer(). */ | |
| 3651 set_marker_restricted (w->pointm[CURRENT_DISP], newpoint, buffer); | |
| 3652 if (EQ (wrap_window (w), Fselected_window (Qnil))) | |
| 3653 Fgoto_char (newpoint, buffer); /* this will automatically clip to | |
| 3654 accessible */ | |
| 3655 marker = Fgethash (buffer, w->saved_last_window_start_cache, Qnil); | |
| 3656 set_marker_restricted (w->start[CURRENT_DISP], | |
| 3657 !NILP (marker) ? | |
| 3658 make_int (marker_position (marker)) : | |
| 3659 make_int (XBUFFER (buffer)->last_window_start), | |
| 3660 buffer); | |
| 3661 } | |
| 3662 #endif | |
| 3663 | |
| 428 | 3664 Fset_marker (w->sb_point, w->start[CURRENT_DISP], buffer); |
| 3665 /* set start_at_line_beg correctly. GE */ | |
| 844 | 3666 w->start_at_line_beg = |
| 3667 beginning_of_line_p (XBUFFER (buffer), | |
| 3668 marker_position (w->start[CURRENT_DISP])); | |
| 3669 w->force_start = 0; /* XEmacs fix */ | |
| 428 | 3670 SET_LAST_MODIFIED (w, 1); |
| 3671 SET_LAST_FACECHANGE (w); | |
| 3672 MARK_WINDOWS_CHANGED (w); | |
| 448 | 3673 { |
| 3674 int new_buffer_local_face_property = | |
| 3675 XBUFFER (w->buffer)->buffer_local_face_property; | |
| 3676 | |
| 3677 if (new_buffer_local_face_property | |
| 3678 || new_buffer_local_face_property != old_buffer_local_face_property) | |
| 3679 MARK_WINDOW_FACES_CHANGED (w); | |
| 3680 } | |
| 428 | 3681 recompute_all_cached_specifiers_in_window (w); |
| 3682 if (EQ (window, Fselected_window (Qnil))) | |
| 3683 { | |
| 440 | 3684 if (NILP (norecord)) |
| 3685 Frecord_buffer (buffer); | |
| 3686 | |
| 428 | 3687 Fset_buffer (buffer); |
| 3688 } | |
| 3689 return Qnil; | |
| 3690 } | |
| 3691 | |
| 3692 DEFUN ("select-window", Fselect_window, 1, 2, 0, /* | |
| 3693 Select WINDOW. Most editing will apply to WINDOW's buffer. | |
| 3694 The main editor command loop selects the buffer of the selected window | |
| 3695 before each command. | |
| 3696 | |
| 442 | 3697 With non-nil optional argument NORECORD, do not modify the |
| 428 | 3698 global or per-frame buffer ordering. |
| 3699 */ | |
| 3700 (window, norecord)) | |
| 3701 { | |
| 3702 struct window *w; | |
| 3703 Lisp_Object old_selected_window = Fselected_window (Qnil); | |
| 3704 | |
| 3705 CHECK_LIVE_WINDOW (window); | |
| 3706 w = XWINDOW (window); | |
| 3707 | |
| 3708 /* we have already caught dead-window errors */ | |
| 3709 if (!NILP (w->hchild) || !NILP (w->vchild)) | |
| 563 | 3710 invalid_operation ("Trying to select non-leaf window", Qunbound); |
| 428 | 3711 |
| 3712 w->use_time = make_int (++window_select_count); | |
| 442 | 3713 |
| 428 | 3714 if (EQ (window, old_selected_window)) |
| 3715 return window; | |
| 3716 | |
| 3717 /* deselect the old window, if it exists (it might not exist if | |
| 3718 the selected device has no frames, which occurs at startup) */ | |
| 3719 if (!NILP (old_selected_window)) | |
| 3720 { | |
| 3721 struct window *ow = XWINDOW (old_selected_window); | |
| 3722 | |
| 3723 Fset_marker (ow->pointm[CURRENT_DISP], | |
| 3724 make_int (BUF_PT (XBUFFER (ow->buffer))), | |
| 3725 ow->buffer); | |
| 3726 | |
| 3727 MARK_WINDOWS_CHANGED (ow); | |
| 3728 } | |
| 3729 | |
| 3730 /* now select the window's frame */ | |
| 3731 set_frame_selected_window (XFRAME (WINDOW_FRAME (w)), window); | |
| 3732 | |
| 3733 select_frame_1 (WINDOW_FRAME (w)); | |
| 3734 | |
| 3735 /* also select the window's buffer */ | |
| 3736 if (NILP (norecord)) | |
| 3737 Frecord_buffer (w->buffer); | |
| 3738 Fset_buffer (w->buffer); | |
| 3739 | |
| 3740 /* Go to the point recorded in the window. | |
| 3741 This is important when the buffer is in more | |
| 3742 than one window. It also matters when | |
| 3743 redisplay_window has altered point after scrolling, | |
| 3744 because it makes the change only in the window. */ | |
| 3745 { | |
| 665 | 3746 Charbpos new_point = marker_position (w->pointm[CURRENT_DISP]); |
| 428 | 3747 if (new_point < BUF_BEGV (current_buffer)) |
| 3748 new_point = BUF_BEGV (current_buffer); | |
| 3749 else if (new_point > BUF_ZV (current_buffer)) | |
| 3750 new_point = BUF_ZV (current_buffer); | |
| 3751 | |
| 3752 BUF_SET_PT (current_buffer, new_point); | |
| 3753 } | |
| 3754 | |
| 3755 MARK_WINDOWS_CHANGED (w); | |
| 3756 | |
| 3757 return window; | |
| 3758 } | |
| 3759 | |
| 3760 Lisp_Object | |
| 3761 display_buffer (Lisp_Object buffer, Lisp_Object not_this_window_p, | |
| 3762 Lisp_Object override_frame) | |
| 3763 { | |
| 3764 return call3 (Qdisplay_buffer, buffer, not_this_window_p, override_frame); | |
| 3765 } | |
| 3766 | |
| 3767 void | |
| 3768 temp_output_buffer_show (Lisp_Object buf, Lisp_Object same_frame) | |
| 3769 { | |
| 3770 /* This function can GC */ | |
| 3771 Lisp_Object window; | |
| 3772 struct window *w; | |
| 3773 struct buffer *b = XBUFFER (buf); | |
| 3774 | |
| 3775 BUF_SAVE_MODIFF (XBUFFER (buf)) = BUF_MODIFF (b); | |
| 3776 widen_buffer (b, 0); | |
| 3777 BUF_SET_PT (b, BUF_BEG (b)); | |
| 3778 | |
| 3779 if (!NILP (Vtemp_buffer_show_function)) | |
| 3780 call1 (Vtemp_buffer_show_function, buf); | |
| 3781 else | |
| 3782 { | |
| 3783 window = display_buffer (buf, Qnil, same_frame); | |
| 3784 | |
| 3785 if (!EQ (XWINDOW (window)->frame, Fselected_frame (Qnil))) | |
| 3786 Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); | |
| 3787 | |
| 3788 Vminibuffer_scroll_window = window; | |
| 3789 w = XWINDOW (window); | |
| 3790 w->hscroll = 0; | |
| 3791 w->modeline_hscroll = 0; | |
| 3792 set_marker_restricted (w->start[CURRENT_DISP], make_int (1), buf); | |
| 3793 set_marker_restricted (w->pointm[CURRENT_DISP], make_int (1), buf); | |
| 3794 set_marker_restricted (w->sb_point, make_int (1), buf); | |
| 3795 } | |
| 3796 } | |
| 3797 | |
| 3798 static void | |
| 3799 make_dummy_parent (Lisp_Object window) | |
| 3800 { | |
| 3801 struct window *o = XWINDOW (window); | |
|
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3802 Lisp_Object obj = ALLOC_LISP_OBJECT (window); |
|
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|
3803 struct window *p = XWINDOW (obj); |
|
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|
3804 |
| 3017 | 3805 COPY_LCRECORD (p, o); |
| 428 | 3806 |
| 3807 /* Don't copy the pointers to the line start cache or the face | |
| 3808 instances. */ | |
| 3809 p->line_start_cache = Dynarr_new (line_start_cache); | |
| 3810 p->face_cachels = Dynarr_new (face_cachel); | |
| 3811 p->glyph_cachels = Dynarr_new (glyph_cachel); | |
| 442 | 3812 p->subwindow_instance_cache = |
| 450 | 3813 make_image_instance_cache_hash_table (); |
| 428 | 3814 |
| 3815 /* Put new into window structure in place of window */ | |
|
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|
3816 replace_window (window, obj); |
| 428 | 3817 |
| 3818 o->next = Qnil; | |
| 3819 o->prev = Qnil; | |
| 3820 o->vchild = Qnil; | |
| 3821 o->hchild = Qnil; | |
|
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|
3822 o->parent = obj; |
| 428 | 3823 |
| 3824 p->start[CURRENT_DISP] = Qnil; | |
| 3825 p->start[DESIRED_DISP] = Qnil; | |
| 3826 p->start[CMOTION_DISP] = Qnil; | |
| 3827 p->pointm[CURRENT_DISP] = Qnil; | |
| 3828 p->pointm[DESIRED_DISP] = Qnil; | |
| 3829 p->pointm[CMOTION_DISP] = Qnil; | |
| 3830 p->sb_point = Qnil; | |
| 844 | 3831 p->saved_point_cache = make_saved_buffer_point_cache (); |
| 3832 p->saved_last_window_start_cache = make_saved_buffer_point_cache (); | |
| 428 | 3833 p->buffer = Qnil; |
| 3834 } | |
| 3835 | |
| 3836 DEFUN ("split-window", Fsplit_window, 0, 3, "", /* | |
| 3837 Split WINDOW, putting SIZE lines in the first of the pair. | |
| 444 | 3838 WINDOW defaults to the selected one and SIZE to half its size. |
| 707 | 3839 If optional third arg HORFLAG is non-nil, split side by side and put |
| 3840 SIZE columns in the first of the pair. The newly created window is | |
| 3841 returned. | |
| 428 | 3842 */ |
| 444 | 3843 (window, size, horflag)) |
| 428 | 3844 { |
| 3025 | 3845 Lisp_Object new_; |
| 428 | 3846 struct window *o, *p; |
| 3847 struct frame *f; | |
| 444 | 3848 int csize; |
| 428 | 3849 int psize; |
| 3850 | |
| 3851 if (NILP (window)) | |
| 3852 window = Fselected_window (Qnil); | |
| 3853 else | |
| 3854 CHECK_LIVE_WINDOW (window); | |
| 3855 | |
| 3856 o = XWINDOW (window); | |
| 3857 f = XFRAME (WINDOW_FRAME (o)); | |
| 3858 | |
| 444 | 3859 if (NILP (size)) |
| 428 | 3860 { |
| 3861 if (!NILP (horflag)) | |
| 3862 /* In the new scheme, we are symmetric with respect to separators | |
| 3863 so there is no need to do weird things here. */ | |
| 3864 { | |
| 956 | 3865 psize = (WINDOW_WIDTH (o) + window_divider_width (o)) >> 1; |
| 444 | 3866 csize = window_pixel_width_to_char_width (o, psize, 0); |
| 428 | 3867 } |
| 3868 else | |
| 3869 { | |
| 3870 psize = WINDOW_HEIGHT (o) >> 1; | |
| 444 | 3871 csize = window_pixel_height_to_char_height (o, psize, 1); |
| 428 | 3872 } |
| 3873 } | |
| 3874 else | |
| 3875 { | |
| 444 | 3876 CHECK_INT (size); |
| 3877 csize = XINT (size); | |
| 428 | 3878 if (!NILP (horflag)) |
| 444 | 3879 psize = window_char_width_to_pixel_width (o, csize, 0); |
| 428 | 3880 else |
| 444 | 3881 psize = window_char_height_to_pixel_height (o, csize, 1); |
| 428 | 3882 } |
| 3883 | |
| 3884 if (MINI_WINDOW_P (o)) | |
| 563 | 3885 invalid_operation ("Attempt to split minibuffer window", Qunbound); |
| 428 | 3886 else if (FRAME_NO_SPLIT_P (XFRAME (WINDOW_FRAME (o)))) |
| 563 | 3887 invalid_operation ("Attempt to split unsplittable frame", Qunbound); |
| 428 | 3888 |
| 3889 check_min_window_sizes (); | |
| 3890 | |
| 3891 if (NILP (horflag)) | |
| 3892 { | |
| 444 | 3893 if (csize < window_min_height) |
| 563 | 3894 signal_error (Qinvalid_operation, "Window height too small (after splitting)", make_int (csize)); |
| 444 | 3895 if (csize + window_min_height > window_char_height (o, 1)) |
| 563 | 3896 signal_error (Qinvalid_operation, "Window height too small (after splitting)", |
| 3897 make_int (window_char_height (o, 1) - csize)); | |
| 428 | 3898 if (NILP (o->parent) |
| 3899 || NILP (XWINDOW (o->parent)->vchild)) | |
| 3900 { | |
| 3901 make_dummy_parent (window); | |
| 448 | 3902 #if 0 |
| 3903 /* #### I can't understand why you have to reset face | |
| 3904 cachels here. This can cause crash so let's disable it | |
| 3905 and see the difference. See redisplay-tests.el --yh */ | |
| 428 | 3906 reset_face_cachels (XWINDOW (window)); |
| 448 | 3907 #endif |
| 3025 | 3908 new_ = o->parent; |
| 3909 XWINDOW (new_)->vchild = window; | |
| 428 | 3910 XFRAME (o->frame)->mirror_dirty = 1; |
| 3911 } | |
| 3912 } | |
| 3913 else | |
| 3914 { | |
| 444 | 3915 if (csize < window_min_width) |
| 563 | 3916 signal_error (Qinvalid_operation, "Window width too small (after splitting)", make_int (csize)); |
| 444 | 3917 if (csize + window_min_width > window_char_width (o, 0)) |
| 563 | 3918 signal_error (Qinvalid_operation, "Window width too small (after splitting)", |
| 3919 make_int (window_char_width (o, 0) - csize)); | |
| 428 | 3920 if (NILP (o->parent) |
| 3921 || NILP (XWINDOW (o->parent)->hchild)) | |
| 3922 { | |
| 3923 make_dummy_parent (window); | |
| 448 | 3924 #if 0 |
| 3925 /* #### See above. */ | |
| 428 | 3926 reset_face_cachels (XWINDOW (window)); |
| 448 | 3927 #endif |
| 3025 | 3928 new_ = o->parent; |
| 3929 XWINDOW (new_)->hchild = window; | |
| 428 | 3930 XFRAME (o->frame)->mirror_dirty = 1; |
| 3931 } | |
| 3932 } | |
| 3933 | |
| 3934 /* Now we know that window's parent is a vertical combination | |
| 3935 if we are dividing vertically, or a horizontal combination | |
| 3936 if we are making side-by-side windows */ | |
| 3937 | |
| 3938 MARK_FRAME_WINDOWS_STRUCTURE_CHANGED (f); | |
| 3025 | 3939 new_ = allocate_window (); |
| 3940 p = XWINDOW (new_); | |
| 428 | 3941 |
| 3942 p->frame = o->frame; | |
| 3943 p->next = o->next; | |
| 3944 if (!NILP (p->next)) | |
| 3025 | 3945 XWINDOW (p->next)->prev = new_; |
| 428 | 3946 p->prev = window; |
| 3025 | 3947 o->next = new_; |
| 428 | 3948 p->parent = o->parent; |
| 3949 p->buffer = Qt; | |
| 3950 | |
| 3951 reset_face_cachels (p); | |
| 3952 reset_glyph_cachels (p); | |
| 3953 | |
| 3954 | |
| 3955 /* Apportion the available frame space among the two new windows */ | |
| 3956 | |
| 3957 if (!NILP (horflag)) | |
| 3958 { | |
| 3959 WINDOW_HEIGHT (p) = WINDOW_HEIGHT (o); | |
| 3960 WINDOW_TOP (p) = WINDOW_TOP (o); | |
| 3961 WINDOW_WIDTH (p) = WINDOW_WIDTH (o) - psize; | |
| 3962 WINDOW_WIDTH (o) = psize; | |
| 3963 WINDOW_LEFT (p) = WINDOW_LEFT (o) + psize; | |
| 3964 } | |
| 3965 else | |
| 3966 { | |
| 3967 WINDOW_LEFT (p) = WINDOW_LEFT (o); | |
| 3968 WINDOW_WIDTH (p) = WINDOW_WIDTH (o); | |
| 3969 WINDOW_HEIGHT (p) = WINDOW_HEIGHT (o) - psize; | |
| 3970 WINDOW_HEIGHT (o) = psize; | |
| 3971 WINDOW_TOP (p) = WINDOW_TOP (o) + psize; | |
| 3972 } | |
| 3973 | |
| 3974 XFRAME (p->frame)->mirror_dirty = 1; | |
| 853 | 3975 |
| 3025 | 3976 note_object_created (new_); |
| 853 | 3977 |
| 428 | 3978 /* do this last (after the window is completely initialized and |
| 3979 the mirror-dirty flag is set) so that specifier recomputation | |
| 3980 caused as a result of this will work properly and not abort. */ | |
| 3025 | 3981 Fset_window_buffer (new_, o->buffer, Qt); |
| 3982 return new_; | |
| 428 | 3983 } |
| 3984 | |
| 3985 | |
| 3986 DEFUN ("enlarge-window", Fenlarge_window, 1, 3, "_p", /* | |
| 444 | 3987 Make the selected window COUNT lines taller. |
| 3988 From program, optional second arg HORIZONTALP non-nil means grow | |
| 3989 sideways COUNT columns, and optional third arg WINDOW specifies the | |
| 3990 window to change instead of the selected window. | |
| 428 | 3991 */ |
| 444 | 3992 (count, horizontalp, window)) |
| 3993 { | |
| 3994 CHECK_INT (count); | |
| 3995 change_window_height (window, XINT (count), horizontalp, /* inpixels */ 0); | |
| 428 | 3996 return Qnil; |
| 3997 } | |
| 3998 | |
| 3999 DEFUN ("enlarge-window-pixels", Fenlarge_window_pixels, 1, 3, "_p", /* | |
| 444 | 4000 Make the selected window COUNT pixels taller. |
| 4001 From program, optional second arg HORIZONTALP non-nil means grow | |
| 4002 sideways COUNT pixels, and optional third arg WINDOW specifies the | |
| 4003 window to change instead of the selected window. | |
| 428 | 4004 */ |
| 444 | 4005 (count, horizontalp, window)) |
| 4006 { | |
| 4007 CHECK_INT (count); | |
| 4008 change_window_height (window, XINT (count), horizontalp, /* inpixels */ 1); | |
| 428 | 4009 return Qnil; |
| 4010 } | |
| 4011 | |
| 4012 DEFUN ("shrink-window", Fshrink_window, 1, 3, "_p", /* | |
| 444 | 4013 Make the selected window COUNT lines shorter. |
| 4014 From program, optional second arg HORIZONTALP non-nil means shrink | |
| 4015 sideways COUNT columns, and optional third arg WINDOW specifies the | |
| 4016 window to change instead of the selected window. | |
| 428 | 4017 */ |
| 444 | 4018 (count, horizontalp, window)) |
| 4019 { | |
| 4020 CHECK_INT (count); | |
| 4021 change_window_height (window, -XINT (count), horizontalp, /* inpixels */ 0); | |
| 428 | 4022 return Qnil; |
| 4023 } | |
| 4024 | |
| 4025 DEFUN ("shrink-window-pixels", Fshrink_window_pixels, 1, 3, "_p", /* | |
| 444 | 4026 Make the selected window COUNT pixels smaller. |
| 4027 From program, optional second arg HORIZONTALP non-nil means shrink | |
| 4028 sideways COUNT pixels, and optional third arg WINDOW specifies the | |
| 4029 window to change instead of the selected window. | |
| 428 | 4030 */ |
| 444 | 4031 (count, horizontalp, window)) |
| 4032 { | |
| 4033 CHECK_INT (count); | |
| 4034 change_window_height (window, -XINT (count), horizontalp, /* inpixels */ 1); | |
| 428 | 4035 return Qnil; |
| 4036 } | |
| 4037 | |
| 4038 static int | |
| 4039 window_pixel_height_to_char_height (struct window *w, int pixel_height, | |
| 4040 int include_gutters_p) | |
| 4041 { | |
| 4042 int avail_height; | |
| 4043 int defheight, defwidth; | |
| 4044 int char_height; | |
| 793 | 4045 Lisp_Object window = wrap_window (w); |
| 4046 | |
| 428 | 4047 |
| 4048 avail_height = (pixel_height - | |
| 4049 (include_gutters_p ? 0 : | |
| 442 | 4050 window_top_window_gutter_height (w) + |
| 4051 window_bottom_window_gutter_height (w))); | |
| 428 | 4052 |
| 4053 default_face_height_and_width (window, &defheight, &defwidth); | |
| 4054 | |
| 4055 char_height = avail_height / defheight; | |
| 4056 | |
| 4057 /* It's the calling function's responsibility to check these values | |
| 4058 and make sure they're not out of range. | |
| 4059 | |
| 4060 #### We need to go through the calling functions and actually | |
| 4061 do this. */ | |
| 4062 return max (0, char_height); | |
| 4063 } | |
| 4064 | |
| 4065 static int | |
| 4066 window_char_height_to_pixel_height (struct window *w, int char_height, | |
| 4067 int include_gutters_p) | |
| 4068 { | |
| 4069 int avail_height; | |
| 4070 int defheight, defwidth; | |
| 4071 int pixel_height; | |
| 4072 | |
| 793 | 4073 Lisp_Object window = wrap_window (w); |
| 4074 | |
| 428 | 4075 |
| 4076 default_face_height_and_width (window, &defheight, &defwidth); | |
| 4077 | |
| 4078 avail_height = char_height * defheight; | |
| 4079 pixel_height = (avail_height + | |
| 4080 (include_gutters_p ? 0 : | |
| 442 | 4081 window_top_window_gutter_height (w) + |
| 4082 window_bottom_window_gutter_height (w))); | |
| 428 | 4083 |
| 4084 /* It's the calling function's responsibility to check these values | |
| 4085 and make sure they're not out of range. | |
| 4086 | |
| 4087 #### We need to go through the calling functions and actually | |
| 4088 do this. */ | |
| 4089 return max (0, pixel_height); | |
| 4090 } | |
| 4091 | |
| 4092 /* Return number of default lines of text can fit in the window W. | |
| 4093 If INCLUDE_GUTTERS_P is 1, include "gutter" space (modeline plus | |
| 4094 horizontal scrollbar) in the space that is used for the calculation. | |
| 442 | 4095 This doesn't include space used by the frame gutters. |
| 428 | 4096 */ |
| 4097 int | |
| 4098 window_char_height (struct window *w, int include_gutters_p) | |
| 4099 { | |
| 442 | 4100 return window_pixel_height_to_char_height (w, window_pixel_height (w), |
| 428 | 4101 include_gutters_p); |
| 4102 } | |
| 4103 | |
| 4104 /* | |
| 4105 * Return number of lines currently displayed in window w. If | |
| 4106 * end-of-buffer is displayed then the area below end-of-buffer is assume | |
| 4107 * to be blank lines of default height. | |
| 4108 * Does not include the modeline. | |
| 4109 */ | |
| 4110 int | |
| 4111 window_displayed_height (struct window *w) | |
| 4112 { | |
| 4113 struct buffer *b = XBUFFER (w->buffer); | |
| 4114 display_line_dynarr *dla = window_display_lines (w, CURRENT_DISP); | |
| 4115 int num_lines; | |
| 4116 Charcount end_pos = (BUF_Z (b) - w->window_end_pos[CURRENT_DISP] > BUF_ZV (b) | |
| 4117 ? -1 | |
| 4118 : w->window_end_pos[CURRENT_DISP]); | |
| 4119 | |
| 4120 if (!Dynarr_length (dla)) | |
| 4121 return window_char_height (w, 0); | |
| 4122 | |
| 4123 num_lines = Dynarr_length (dla); | |
| 4124 | |
| 4125 /* #### Document and assert somewhere that w->window_end_pos == -1 | |
| 4126 indicates that end-of-buffer is being displayed. */ | |
| 4127 if (end_pos == -1) | |
| 4128 { | |
| 4129 struct display_line *dl = Dynarr_atp (dla, 0); | |
| 4130 int ypos1 = dl->ypos + dl->descent; | |
| 4131 int ypos2 = WINDOW_TEXT_BOTTOM (w); | |
| 4132 Lisp_Object window; | |
| 4133 int defheight, defwidth; | |
| 4134 | |
| 793 | 4135 window = wrap_window (w); |
| 428 | 4136 |
| 4137 if (dl->modeline) | |
| 4138 { | |
| 4139 num_lines--; | |
| 4140 | |
| 4141 if (Dynarr_length (dla) == 1) | |
| 4142 ypos1 = WINDOW_TEXT_TOP (w); | |
| 4143 else | |
| 4144 { | |
| 4145 dl = Dynarr_atp (dla, Dynarr_length (dla) - 1); | |
| 4146 /* If this line is clipped then we know that there is no | |
| 4147 blank room between eob and the modeline. If we are | |
| 4148 scrolling on clipped lines just know off the clipped | |
| 4149 line and return .*/ | |
| 4150 if (scroll_on_clipped_lines && dl->clip) | |
| 4151 return num_lines - 1; | |
| 4152 ypos1 = dl->ypos + dl->descent - dl->clip; | |
| 4153 } | |
| 4154 } | |
| 4155 | |
| 4156 default_face_height_and_width (window, &defheight, &defwidth); | |
| 4157 /* #### This probably needs to know about the clipping area once a | |
| 4158 final definition is decided on. */ | |
| 4159 num_lines += ((ypos2 - ypos1) / defheight); | |
| 4160 } | |
| 4161 else | |
| 4162 { | |
| 4163 if (num_lines > 1 && Dynarr_atp (dla, 0)->modeline) | |
| 4164 num_lines--; | |
| 4165 | |
| 4166 if (scroll_on_clipped_lines | |
| 4167 && Dynarr_atp (dla, Dynarr_length (dla) - 1)->clip) | |
| 4168 num_lines--; | |
| 4169 } | |
| 4170 | |
| 4171 return num_lines; | |
| 4172 } | |
| 4173 | |
| 4174 static int | |
| 4175 window_pixel_width (Lisp_Object window) | |
| 4176 { | |
| 4177 return WINDOW_WIDTH (XWINDOW (window)); | |
| 4178 } | |
| 4179 | |
| 442 | 4180 /* Calculate the pixel of a window, optionally including margin space |
| 4181 but no vertical gutters. */ | |
| 428 | 4182 static int |
| 4183 window_pixel_width_to_char_width (struct window *w, int pixel_width, | |
| 4184 int include_margins_p) | |
| 4185 { | |
| 4186 int avail_width; | |
| 4187 int char_width; | |
| 4188 int defheight, defwidth; | |
| 793 | 4189 Lisp_Object window = wrap_window (w); |
| 4190 | |
| 428 | 4191 |
| 4192 avail_width = (pixel_width - | |
| 4193 window_left_gutter_width (w, 0) - | |
| 4194 window_right_gutter_width (w, 0) - | |
| 4195 (include_margins_p ? 0 : window_left_margin_width (w)) - | |
| 4196 (include_margins_p ? 0 : window_right_margin_width (w))); | |
| 4197 | |
| 4198 default_face_height_and_width (window, &defheight, &defwidth); | |
| 4199 | |
| 4200 char_width = (avail_width / defwidth); | |
| 4201 | |
| 4202 /* It's the calling function's responsibility to check these values | |
| 4203 and make sure they're not out of range. | |
| 4204 | |
| 4205 #### We need to go through the calling functions and actually | |
| 4206 do this. */ | |
| 4207 return max (0, char_width); | |
| 4208 } | |
| 4209 | |
| 4210 static int | |
| 4211 window_char_width_to_pixel_width (struct window *w, int char_width, | |
| 4212 int include_margins_p) | |
| 4213 { | |
| 4214 int avail_width; | |
| 4215 int pixel_width; | |
| 4216 int defheight, defwidth; | |
| 793 | 4217 Lisp_Object window = wrap_window (w); |
| 4218 | |
| 428 | 4219 |
| 4220 default_face_height_and_width (window, &defheight, &defwidth); | |
| 4221 | |
| 4222 avail_width = char_width * defwidth; | |
| 4223 pixel_width = (avail_width + | |
| 442 | 4224 window_left_window_gutter_width (w, 0) + |
| 4225 window_right_window_gutter_width (w, 0) + | |
| 428 | 4226 (include_margins_p ? 0 : window_left_margin_width (w)) + |
| 4227 (include_margins_p ? 0 : window_right_margin_width (w))); | |
| 4228 | |
| 4229 /* It's the calling function's responsibility to check these values | |
| 4230 and make sure they're not out of range. | |
| 4231 | |
| 4232 #### We need to go through the calling functions and actually | |
| 4233 do this. */ | |
| 4234 return max (0, pixel_width); | |
| 4235 } | |
| 4236 | |
| 4237 /* This returns the usable space which doesn't include space needed by | |
| 4238 scrollbars or divider lines. */ | |
| 4239 int | |
| 4240 window_char_width (struct window *w, int include_margins_p) | |
| 4241 { | |
| 4242 return window_pixel_width_to_char_width (w, WINDOW_WIDTH (w), | |
| 4243 include_margins_p); | |
| 4244 } | |
| 4245 | |
| 4246 #define MINSIZE(w) \ | |
| 4247 (widthflag \ | |
| 4248 ? window_min_width * defwidth \ | |
| 4249 : (defheight * (MINI_WINDOW_P (XWINDOW (w)) ? 1 : window_min_height))) | |
| 4250 | |
| 4251 #define CURBEG(w) \ | |
| 4252 *(widthflag ? (int *) &WINDOW_LEFT (w) : (int *) &WINDOW_TOP (w)) | |
| 4253 | |
| 4254 #define CURSIZE(w) \ | |
| 4255 *(widthflag ? (int *) &WINDOW_WIDTH (w) : (int *) &WINDOW_HEIGHT (w)) | |
| 4256 | |
| 4257 #define CURCHARSIZE(w) \ | |
| 4258 (widthflag ? window_char_width (w, 0) : window_char_height (w, 1)) | |
| 4259 | |
| 4260 #define MINCHARSIZE(window) \ | |
| 4261 (widthflag ? window_min_width : MINI_WINDOW_P (XWINDOW (window)) \ | |
| 4262 ? 1 : window_min_height) | |
| 4263 | |
| 442 | 4264 static int |
| 4265 window_pixheight (Lisp_Object w) | |
| 4266 { | |
| 4267 return window_pixel_height (XWINDOW (w)); | |
| 4268 } | |
| 4269 | |
| 428 | 4270 /* Unlike set_window_pixheight, this function |
| 4271 also changes the heights of the siblings so as to | |
| 4272 keep everything consistent. */ | |
| 4273 | |
| 4274 static void | |
| 444 | 4275 change_window_height (Lisp_Object window, int delta, Lisp_Object horizontalp, |
| 428 | 4276 int inpixels) |
| 4277 { | |
| 444 | 4278 struct window *win = decode_window (window); |
| 4279 int widthflag = !NILP (horizontalp); | |
| 428 | 4280 Lisp_Object parent; |
| 4281 struct window *w; | |
| 4282 struct frame *f; | |
| 4283 int *sizep; | |
| 4284 int (*sizefun) (Lisp_Object) = (widthflag | |
| 4285 ? window_pixel_width | |
| 442 | 4286 : window_pixheight); |
| 428 | 4287 void (*setsizefun) (Lisp_Object, int, int) = (widthflag |
| 4288 ? set_window_pixwidth | |
| 4289 : set_window_pixheight); | |
| 4290 int dim; | |
| 4291 int defheight, defwidth; | |
| 4292 | |
| 4293 if (delta == 0) | |
| 4294 return; | |
| 4295 | |
| 4296 check_min_window_sizes (); | |
| 4297 | |
| 793 | 4298 window = wrap_window (win); |
| 428 | 4299 f = XFRAME (win->frame); |
| 4300 if (EQ (window, FRAME_ROOT_WINDOW (f))) | |
| 563 | 4301 invalid_operation ("Won't change only window", Qunbound); |
| 428 | 4302 |
| 4303 /* #### This is very likely incorrect and instead the char_to_pixel_ | |
| 4304 functions should be called. */ | |
| 4305 default_face_height_and_width (window, &defheight, &defwidth); | |
| 4306 | |
| 4307 while (1) | |
| 4308 { | |
| 4309 w = XWINDOW (window); | |
| 4310 parent = w->parent; | |
| 4311 if (NILP (parent)) | |
| 4312 { | |
| 4313 if (widthflag) | |
| 3078 | 4314 { |
| 4315 int new_pixsize; | |
| 4316 sizep = &CURSIZE (w); | |
| 4317 dim = CURCHARSIZE (w); | |
| 4318 new_pixsize = inpixels?(*sizep + delta):(dim+delta); | |
| 4319 set_window_pixsize (window, new_pixsize, 0, 0); | |
| 4320 return; | |
| 4321 } | |
| 428 | 4322 break; |
| 4323 } | |
| 4324 if (widthflag | |
| 4325 ? !NILP (XWINDOW (parent)->hchild) | |
| 4326 : !NILP (XWINDOW (parent)->vchild)) | |
| 4327 break; | |
| 4328 window = parent; | |
| 4329 } | |
| 4330 | |
| 4331 sizep = &CURSIZE (w); | |
| 4332 dim = CURCHARSIZE (w); | |
| 4333 | |
| 4334 if ((inpixels && (*sizep + delta) < MINSIZE (window)) || | |
| 4335 (!inpixels && (dim + delta) < MINCHARSIZE (window))) | |
| 4336 { | |
| 4337 if (MINI_WINDOW_P (XWINDOW (window))) | |
| 4338 return; | |
| 4339 else if (!NILP (parent)) | |
| 4340 { | |
| 4341 Fdelete_window (window, Qnil); | |
| 4342 return; | |
| 4343 } | |
| 4344 } | |
| 4345 | |
| 4346 if (!inpixels) | |
| 4347 delta *= (widthflag ? defwidth : defheight); | |
| 4348 | |
| 4349 { | |
| 4350 int maxdelta; | |
| 4351 | |
| 4352 maxdelta = ((!NILP (parent)) | |
| 4353 ? (*sizefun) (parent) - *sizep | |
| 4354 : ((!NILP (w->next)) | |
| 4355 ? (*sizefun) (w->next) - MINSIZE (w->next) | |
| 4356 : ((!NILP (w->prev)) | |
| 4357 ? (*sizefun) (w->prev) - MINSIZE (w->prev) | |
| 4358 /* This is a frame with only one window, | |
| 4359 a minibuffer-only or a minibufferless frame. */ | |
| 4360 : (delta = 0)))); | |
| 4361 | |
| 4362 if (delta > maxdelta) | |
| 4363 /* This case traps trying to make the minibuffer | |
| 4364 the full frame, or make the only window aside from the | |
| 4365 minibuffer the full frame. */ | |
| 4366 delta = maxdelta; | |
| 4367 | |
| 4368 if (delta == 0) | |
| 4369 return; | |
| 4370 | |
| 4371 #if 0 /* FSFmacs */ | |
| 4372 /* #### Chuck: is this correct? */ | |
| 4373 if (*sizep + delta < MINSIZE (window)) | |
| 4374 { | |
| 4375 Fdelete_window (window); | |
| 4376 return; | |
| 4377 } | |
| 4378 #endif | |
| 4379 } | |
| 4380 | |
| 4381 if (!NILP (w->next) && | |
| 4382 (*sizefun) (w->next) - delta >= (int) MINSIZE (w->next)) | |
| 4383 { | |
| 4384 CURBEG (XWINDOW (w->next)) += delta; | |
| 4385 (*setsizefun) (w->next, (*sizefun) (w->next) - delta, 0); | |
| 4386 (*setsizefun) (window, *sizep + delta, 0); | |
| 4387 } | |
| 4388 else if (!NILP (w->prev) && | |
| 4389 (*sizefun) (w->prev) - delta >= (int) MINSIZE (w->prev)) | |
| 4390 { | |
| 4391 (*setsizefun) (w->prev, (*sizefun) (w->prev) - delta, 0); | |
| 4392 CURBEG (w) -= delta; | |
| 4393 (*setsizefun) (window, *sizep + delta, 0); | |
| 4394 } | |
| 4395 else | |
| 4396 { | |
| 4397 int delta1; | |
| 4398 int opht = (*sizefun) (parent); | |
| 4399 | |
| 4400 /* If trying to grow this window to or beyond size of the parent, | |
| 4401 make delta1 so big that, on shrinking back down, | |
| 4402 all the siblings end up with less than one line and are deleted. */ | |
| 4403 if (opht <= *sizep + delta) | |
| 4404 delta1 = opht * opht * 2; | |
| 4405 /* Otherwise, make delta1 just right so that if we add delta1 | |
| 4406 lines to this window and to the parent, and then shrink | |
| 4407 the parent back to its original size, the new proportional | |
| 4408 size of this window will increase by delta. */ | |
| 4409 else | |
| 4410 delta1 = (delta * opht * 100) / ((opht - *sizep - delta) * 100); | |
| 4411 | |
| 4412 /* Add delta1 lines or columns to this window, and to the parent, | |
| 4413 keeping things consistent while not affecting siblings. */ | |
| 4414 CURSIZE (XWINDOW (parent)) = opht + delta1; | |
| 4415 (*setsizefun) (window, *sizep + delta1, 0); | |
| 4416 | |
| 4417 /* Squeeze out delta1 lines or columns from our parent, | |
| 4418 shrinking this window and siblings proportionately. | |
| 4419 This brings parent back to correct size. | |
| 4420 Delta1 was calculated so this makes this window the desired size, | |
| 4421 taking it all out of the siblings. */ | |
| 4422 (*setsizefun) (parent, opht, 0); | |
| 4423 } | |
| 4424 | |
| 4425 SET_LAST_MODIFIED (w, 0); | |
| 4426 SET_LAST_FACECHANGE (w); | |
| 4427 MARK_FRAME_WINDOWS_STRUCTURE_CHANGED (f); | |
| 4428 /* overkill maybe, but better to be correct */ | |
| 4429 MARK_FRAME_GUTTERS_CHANGED (f); | |
| 4430 } | |
| 4431 #undef MINSIZE | |
| 4432 #undef CURBEG | |
| 4433 #undef CURSIZE | |
| 4434 #undef CURCHARSIZE | |
| 4435 #undef MINCHARSIZE | |
| 4436 | |
| 4437 | |
| 4438 | |
| 444 | 4439 /* Scroll contents of window WINDOW up COUNT lines. |
| 4440 If COUNT < (top line height / average line height) then we just adjust | |
| 4441 the top clip. */ | |
| 428 | 4442 void |
| 444 | 4443 window_scroll (Lisp_Object window, Lisp_Object count, int direction, |
| 578 | 4444 Error_Behavior errb) |
| 428 | 4445 { |
| 4446 struct window *w = XWINDOW (window); | |
| 4447 struct buffer *b = XBUFFER (w->buffer); | |
| 4448 int selected = EQ (window, Fselected_window (Qnil)); | |
| 4449 int value = 0; | |
| 4450 Lisp_Object point, tem; | |
| 4451 display_line_dynarr *dla; | |
| 4452 int fheight, fwidth, modeline = 0; | |
| 4453 struct display_line* dl; | |
| 4454 | |
| 4455 if (selected) | |
| 4456 point = make_int (BUF_PT (b)); | |
| 4457 else | |
| 4458 { | |
| 665 | 4459 Charbpos pos = marker_position (w->pointm[CURRENT_DISP]); |
| 428 | 4460 |
| 4461 if (pos < BUF_BEGV (b)) | |
| 4462 pos = BUF_BEGV (b); | |
| 4463 else if (pos > BUF_ZV (b)) | |
| 4464 pos = BUF_ZV (b); | |
| 4465 | |
| 4466 point = make_int (pos); | |
| 4467 } | |
| 4468 | |
| 4469 /* Always set force_start so that redisplay_window will run | |
| 4470 the window-scroll-functions. */ | |
| 4471 w->force_start = 1; | |
| 4472 | |
| 4473 /* #### When the fuck does this happen? I'm so glad that history has | |
| 4474 completely documented the behavior of the scrolling functions under | |
| 4475 all circumstances. */ | |
| 1708 | 4476 tem = Fpos_visible_in_window_p (point, window, Qnil); |
| 428 | 4477 if (NILP (tem)) |
| 4478 { | |
| 4479 Fvertical_motion (make_int (-window_char_height (w, 0) / 2), | |
| 4480 window, Qnil); | |
| 4481 Fset_marker (w->start[CURRENT_DISP], point, w->buffer); | |
| 4482 w->start_at_line_beg = beginning_of_line_p (b, XINT (point)); | |
| 4483 WINDOW_TEXT_TOP_CLIP (w) = 0; | |
| 4484 MARK_WINDOWS_CHANGED (w); | |
| 4485 } | |
| 4486 | |
| 444 | 4487 if (!NILP (count)) |
| 428 | 4488 { |
| 444 | 4489 if (EQ (count, Qminus)) |
| 428 | 4490 direction *= -1; |
| 4491 else | |
| 4492 { | |
| 444 | 4493 count = Fprefix_numeric_value (count); |
| 4494 value = XINT (count) * direction; | |
| 428 | 4495 |
| 4496 if (!value) | |
| 4497 return; /* someone just made a pointless call */ | |
| 4498 } | |
| 4499 } | |
| 4500 | |
| 4501 /* If the user didn't specify how far to scroll then we have to figure it | |
| 4502 out by ourselves. */ | |
| 444 | 4503 if (NILP (count) || EQ (count, Qminus)) |
| 428 | 4504 { |
| 4505 /* Going forwards is easy. If that is what we are doing then just | |
| 4506 set value and the section which handles the user specifying a | |
| 4507 positive value will work. */ | |
| 4508 if (direction == 1) | |
| 4509 { | |
| 4510 value = window_displayed_height (w) - next_screen_context_lines; | |
| 4511 value = (value < 1 ? 1 : value); | |
| 4512 } | |
| 4513 | |
| 4514 /* Going backwards is hard. We can't use the same loop used if the | |
| 4515 user specified a negative value because we care about | |
| 4516 next_screen_context_lines. In a variable height world you don't | |
| 4517 know how many lines above you can actually be displayed and still | |
| 4518 have the context lines appear. So we leave value set to 0 and add | |
| 4519 a separate section to deal with this. */ | |
| 4520 | |
| 4521 } | |
| 4522 | |
| 4523 if (direction == 1 && !value) | |
| 4524 { | |
| 4525 return; | |
| 4526 } | |
| 4527 | |
| 4528 /* Determine parameters to test for partial line scrolling with. */ | |
| 4529 dla = window_display_lines (w, CURRENT_DISP); | |
| 4530 | |
| 4531 if (INTP (Vwindow_pixel_scroll_increment)) | |
| 4532 fheight = XINT (Vwindow_pixel_scroll_increment); | |
| 440 | 4533 else if (!NILP (Vwindow_pixel_scroll_increment)) |
| 428 | 4534 default_face_height_and_width (window, &fheight, &fwidth); |
| 438 | 4535 |
| 428 | 4536 if (Dynarr_length (dla) >= 1) |
| 4537 modeline = Dynarr_atp (dla, 0)->modeline; | |
| 4538 | |
| 4539 dl = Dynarr_atp (dla, modeline); | |
| 438 | 4540 |
| 428 | 4541 if (value > 0) |
| 4542 { | |
| 4543 /* Go for partial display line scrolling. This just means bumping | |
| 4544 the clip by a reasonable amount and redisplaying, everything else | |
| 4545 remains unchanged. */ | |
| 4546 if (!NILP (Vwindow_pixel_scroll_increment) | |
| 4547 && | |
| 4548 Dynarr_length (dla) >= (1 + modeline) | |
| 4549 && | |
| 458 | 4550 (dl->ascent - dl->top_clip) > fheight * value) |
| 428 | 4551 { |
| 4552 WINDOW_TEXT_TOP_CLIP (w) += value * fheight; | |
| 4553 MARK_WINDOWS_CHANGED (w); | |
| 4554 } | |
| 4555 else | |
| 4556 { | |
| 4557 int vtarget; | |
| 665 | 4558 Charbpos startp, old_start; |
| 438 | 4559 |
| 428 | 4560 if (WINDOW_TEXT_TOP_CLIP (w)) |
| 4561 { | |
| 4562 WINDOW_TEXT_TOP_CLIP (w) = 0; | |
| 4563 MARK_WINDOWS_CHANGED (w); | |
| 4564 } | |
| 4565 | |
| 4566 old_start = marker_position (w->start[CURRENT_DISP]); | |
| 4567 startp = vmotion (w, old_start, value, &vtarget); | |
| 438 | 4568 |
| 428 | 4569 if (vtarget < value && |
| 4570 (w->window_end_pos[CURRENT_DISP] == -1 | |
| 4571 || (BUF_Z (b) - w->window_end_pos[CURRENT_DISP] > BUF_ZV (b)))) | |
| 4572 { | |
| 563 | 4573 maybe_signal_error_1 (Qend_of_buffer, Qnil, Qwindow, errb); |
| 428 | 4574 return; |
| 4575 } | |
| 4576 else | |
| 4577 { | |
| 4578 set_marker_restricted (w->start[CURRENT_DISP], make_int (startp), | |
| 4579 w->buffer); | |
| 4580 w->force_start = 1; | |
| 4581 w->start_at_line_beg = beginning_of_line_p (b, startp); | |
| 4582 MARK_WINDOWS_CHANGED (w); | |
| 438 | 4583 |
| 1708 | 4584 if (!point_would_be_visible (w, startp, XINT (point), 0)) |
| 844 | 4585 Fset_window_point (wrap_window (w), make_int (startp)); |
| 428 | 4586 } |
| 4587 } | |
| 4588 } | |
| 4589 else if (value < 0) | |
| 4590 { | |
| 4591 /* Go for partial display line scrolling. This just means bumping | |
| 4592 the clip by a reasonable amount and redisplaying, everything else | |
| 4593 remains unchanged. */ | |
| 4594 if (!NILP (Vwindow_pixel_scroll_increment) | |
| 4595 && | |
| 4596 Dynarr_length (dla) >= (1 + modeline) | |
| 4597 && | |
| 4598 (dl->ascent - dl->top_clip) - fheight * value < | |
| 4599 (dl->ascent + dl->descent - dl->clip) | |
| 4600 && | |
| 4601 WINDOW_TEXT_TOP_CLIP (w) + value * fheight > 0) | |
| 4602 { | |
| 4603 WINDOW_TEXT_TOP_CLIP (w) += value * fheight; | |
| 4604 MARK_WINDOWS_CHANGED (w); | |
| 4605 } | |
| 4606 else | |
| 4607 { | |
| 4608 int vtarget; | |
| 665 | 4609 Charbpos startp, old_start; |
| 438 | 4610 |
| 428 | 4611 if (WINDOW_TEXT_TOP_CLIP (w)) |
| 4612 { | |
| 4613 WINDOW_TEXT_TOP_CLIP (w) = 0; | |
| 4614 MARK_WINDOWS_CHANGED (w); | |
| 4615 } | |
| 438 | 4616 |
| 428 | 4617 old_start = marker_position (w->start[CURRENT_DISP]); |
| 4618 startp = vmotion (w, old_start, value, &vtarget); | |
| 438 | 4619 |
| 428 | 4620 if (vtarget > value |
| 4621 && marker_position (w->start[CURRENT_DISP]) == BUF_BEGV (b)) | |
| 4622 { | |
| 563 | 4623 maybe_signal_error_1 (Qbeginning_of_buffer, Qnil, Qwindow, errb); |
| 428 | 4624 return; |
| 4625 } | |
| 4626 else | |
| 4627 { | |
| 4628 set_marker_restricted (w->start[CURRENT_DISP], make_int (startp), | |
| 4629 w->buffer); | |
| 4630 w->force_start = 1; | |
| 4631 w->start_at_line_beg = beginning_of_line_p (b, startp); | |
| 4632 MARK_WINDOWS_CHANGED (w); | |
| 438 | 4633 |
| 440 | 4634 /* #### Scroll back by less than a line. This code was |
| 4635 originally for scrolling over large pixmaps and it | |
| 4636 loses when a line being *exposed* at the top of the | |
| 4637 window is bigger than the current one. However, for | |
| 4638 pixel based scrolling in general we can guess that | |
| 4639 the line we are going to display is probably the same | |
| 4640 size as the one we are on. In that instance we can | |
| 4641 have a reasonable stab at a suitable top clip. Fixing | |
| 4642 this properly is hard (and probably slow) as we would | |
| 4643 have to call redisplay to figure out the exposed line | |
| 4644 size. */ | |
| 4645 if (!NILP (Vwindow_pixel_scroll_increment) | |
| 4646 && Dynarr_length (dla) >= (1 + modeline) | |
| 4647 && dl->ascent + fheight * value > 0) | |
| 4648 { | |
| 4649 WINDOW_TEXT_TOP_CLIP (w) = (dl->ascent + fheight * value); | |
| 4650 } | |
| 4651 | |
| 1708 | 4652 if (!point_would_be_visible (w, startp, XINT (point), 0)) |
| 428 | 4653 { |
| 665 | 4654 Charbpos new_point; |
| 438 | 4655 |
| 428 | 4656 if (MINI_WINDOW_P (w)) |
| 4657 new_point = startp; | |
| 4658 else | |
| 4659 new_point = start_of_last_line (w, startp); | |
| 438 | 4660 |
| 844 | 4661 Fset_window_point (wrap_window (w), make_int (new_point)); |
| 428 | 4662 } |
| 4663 } | |
| 4664 } | |
| 4665 } | |
| 4666 else /* value == 0 && direction == -1 */ | |
| 4667 { | |
| 4668 if (WINDOW_TEXT_TOP_CLIP (w)) | |
| 4669 { | |
| 4670 WINDOW_TEXT_TOP_CLIP (w) = 0; | |
| 4671 MARK_WINDOWS_CHANGED (w); | |
| 4672 } | |
| 4673 if (marker_position (w->start[CURRENT_DISP]) == BUF_BEGV (b)) | |
| 4674 { | |
| 563 | 4675 maybe_signal_error_1 (Qbeginning_of_buffer, Qnil, Qwindow, errb); |
| 428 | 4676 return; |
| 4677 } | |
| 4678 else | |
| 4679 { | |
| 4680 int vtarget; | |
| 4681 int movement = next_screen_context_lines - 1; | |
| 665 | 4682 Charbpos old_startp = marker_position (w->start[CURRENT_DISP]); |
| 4683 Charbpos bottom = vmotion (w, old_startp, movement, &vtarget); | |
| 4684 Charbpos startp = | |
| 428 | 4685 start_with_point_on_display_line (w, bottom, |
| 4686 -1 - (movement - vtarget)); | |
| 4687 | |
| 4688 if (startp >= old_startp) | |
| 4689 startp = vmotion (w, old_startp, -1, NULL); | |
| 4690 | |
| 4691 set_marker_restricted (w->start[CURRENT_DISP], make_int (startp), | |
| 4692 w->buffer); | |
| 4693 w->force_start = 1; | |
| 4694 w->start_at_line_beg = beginning_of_line_p (b, startp); | |
| 4695 MARK_WINDOWS_CHANGED (w); | |
| 4696 | |
| 1708 | 4697 if (!point_would_be_visible (w, startp, XINT (point), 0)) |
| 428 | 4698 { |
| 665 | 4699 Charbpos new_point = start_of_last_line (w, startp); |
| 428 | 4700 |
| 844 | 4701 Fset_window_point (wrap_window (w), make_int (new_point)); |
| 428 | 4702 } |
| 4703 } | |
| 4704 } | |
| 4705 } | |
| 4706 | |
| 4707 DEFUN ("scroll-up", Fscroll_up, 0, 1, "_P", /* | |
| 444 | 4708 Scroll text of current window up COUNT lines; or near full screen if no arg. |
| 428 | 4709 A near full screen is `next-screen-context-lines' less than a full screen. |
| 444 | 4710 Negative COUNT means scroll downward. |
| 428 | 4711 When calling from a program, supply an integer as argument or nil. |
| 4712 On attempt to scroll past end of buffer, `end-of-buffer' is signaled. | |
| 4713 On attempt to scroll past beginning of buffer, `beginning-of-buffer' is | |
| 4714 signaled. | |
| 462 | 4715 |
| 4716 The characters that are moved over may be added to the current selection | |
| 4717 \(i.e. active region) if the Shift key is held down, a motion key is used | |
| 4718 to invoke this command, and `shifted-motion-keys-select-region' is t; see | |
| 4719 the documentation for this variable for more details. | |
| 428 | 4720 */ |
| 444 | 4721 (count)) |
| 4722 { | |
| 4723 window_scroll (Fselected_window (Qnil), count, 1, ERROR_ME); | |
| 428 | 4724 return Qnil; |
| 4725 } | |
| 4726 | |
| 4727 DEFUN ("scroll-down", Fscroll_down, 0, 1, "_P", /* | |
| 444 | 4728 Scroll text of current window down COUNT lines; or near full screen if no arg. |
| 428 | 4729 A near full screen is `next-screen-context-lines' less than a full screen. |
| 444 | 4730 Negative COUNT means scroll upward. |
| 428 | 4731 When calling from a program, supply a number as argument or nil. |
| 4732 On attempt to scroll past end of buffer, `end-of-buffer' is signaled. | |
| 4733 On attempt to scroll past beginning of buffer, `beginning-of-buffer' is | |
| 4734 signaled. | |
| 462 | 4735 |
| 4736 The characters that are moved over may be added to the current selection | |
| 4737 \(i.e. active region) if the Shift key is held down, a motion key is used | |
| 4738 to invoke this command, and `shifted-motion-keys-select-region' is t; see | |
| 4739 the documentation for this variable for more details. | |
| 428 | 4740 */ |
| 444 | 4741 (count)) |
| 4742 { | |
| 4743 window_scroll (Fselected_window (Qnil), count, -1, ERROR_ME); | |
| 428 | 4744 return Qnil; |
| 4745 } | |
| 4746 | |
| 4747 DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, 0, 0, 0, /* | |
| 4748 Return the other window for "other window scroll" commands. | |
| 4749 If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
| 4750 specifies the window. | |
| 4751 If `other-window-scroll-buffer' is non-nil, a window | |
| 4752 showing that buffer is used. | |
| 4753 */ | |
| 4754 ()) | |
| 4755 { | |
| 4756 Lisp_Object window; | |
| 4757 Lisp_Object selected_window = Fselected_window (Qnil); | |
| 4758 | |
| 4759 if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
| 4760 && !NILP (Vminibuffer_scroll_window)) | |
| 4761 window = Vminibuffer_scroll_window; | |
| 4762 /* If buffer is specified, scroll that buffer. */ | |
| 4763 else if (!NILP (Vother_window_scroll_buffer)) | |
| 4764 { | |
| 4765 window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil, Qnil); | |
| 4766 if (NILP (window)) | |
| 4767 window = display_buffer (Vother_window_scroll_buffer, Qt, Qnil); | |
| 4768 } | |
| 4769 else | |
| 4770 { | |
| 4771 /* Nothing specified; look for a neighboring window on the same | |
| 4772 frame. */ | |
| 4773 window = Fnext_window (selected_window, Qnil, Qnil, Qnil); | |
| 4774 | |
| 4775 if (EQ (window, selected_window)) | |
| 4776 /* That didn't get us anywhere; look for a window on another | |
| 4777 visible frame. */ | |
| 4778 do | |
| 4779 window = Fnext_window (window, Qnil, Qt, Qnil); | |
| 4780 while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
| 4781 && ! EQ (window, selected_window)); | |
| 4782 } | |
| 4783 | |
| 4784 CHECK_LIVE_WINDOW (window); | |
| 4785 | |
| 4786 if (EQ (window, selected_window)) | |
| 563 | 4787 invalid_operation ("There is no other window", Qunbound); |
| 428 | 4788 |
| 4789 return window; | |
| 4790 } | |
| 4791 | |
| 4792 DEFUN ("scroll-other-window", Fscroll_other_window, 0, 1, "_P", /* | |
| 444 | 4793 Scroll next window upward COUNT lines; or near full frame if no arg. |
| 428 | 4794 The next window is the one below the current one; or the one at the top |
| 444 | 4795 if the current one is at the bottom. Negative COUNT means scroll downward. |
| 428 | 4796 When calling from a program, supply a number as argument or nil. |
| 4797 | |
| 4798 If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
| 4799 specifies the window to scroll. | |
| 4800 If `other-window-scroll-buffer' is non-nil, scroll the window | |
| 4801 showing that buffer, popping the buffer up if necessary. | |
| 4802 */ | |
| 444 | 4803 (count)) |
| 4804 { | |
| 4805 window_scroll (Fother_window_for_scrolling (), count, 1, ERROR_ME); | |
| 428 | 4806 return Qnil; |
| 4807 } | |
| 4808 | |
| 4809 DEFUN ("scroll-left", Fscroll_left, 0, 1, "_P", /* | |
| 444 | 4810 Scroll selected window display COUNT columns left. |
| 4811 Default for COUNT is window width minus 2. | |
| 462 | 4812 |
| 4813 The characters that are moved over may be added to the current selection | |
| 4814 \(i.e. active region) if the Shift key is held down, a motion key is used | |
| 4815 to invoke this command, and `shifted-motion-keys-select-region' is t; see | |
| 4816 the documentation for this variable for more details. | |
| 428 | 4817 */ |
| 444 | 4818 (count)) |
| 428 | 4819 { |
| 4820 Lisp_Object window = Fselected_window (Qnil); | |
| 4821 struct window *w = XWINDOW (window); | |
| 444 | 4822 int n = (NILP (count) ? |
| 4823 window_char_width (w, 0) - 2 : | |
| 4824 XINT (Fprefix_numeric_value (count))); | |
| 4825 | |
| 4826 return Fset_window_hscroll (window, make_int (w->hscroll + n)); | |
| 428 | 4827 } |
| 4828 | |
| 4829 DEFUN ("scroll-right", Fscroll_right, 0, 1, "_P", /* | |
| 444 | 4830 Scroll selected window display COUNT columns right. |
| 4831 Default for COUNT is window width minus 2. | |
| 462 | 4832 |
| 4833 The characters that are moved over may be added to the current selection | |
| 4834 \(i.e. active region) if the Shift key is held down, a motion key is used | |
| 4835 to invoke this command, and `shifted-motion-keys-select-region' is t; see | |
| 4836 the documentation for this variable for more details. | |
| 428 | 4837 */ |
| 444 | 4838 (count)) |
| 428 | 4839 { |
| 4840 Lisp_Object window = Fselected_window (Qnil); | |
| 4841 struct window *w = XWINDOW (window); | |
| 444 | 4842 int n = (NILP (count) ? |
| 4843 window_char_width (w, 0) - 2 : | |
| 4844 XINT (Fprefix_numeric_value (count))); | |
| 4845 | |
| 4846 return Fset_window_hscroll (window, make_int (w->hscroll - n)); | |
| 428 | 4847 } |
| 4848 | |
| 4849 DEFUN ("center-to-window-line", Fcenter_to_window_line, 0, 2, "_P", /* | |
| 4850 Center point in WINDOW. With N, put point on line N. | |
| 4851 The desired position of point is always relative to the window. | |
| 4852 If WINDOW is nil, the selected window is used. | |
| 4853 */ | |
| 4854 (n, window)) | |
| 4855 { | |
| 4856 struct window *w = decode_window (window); | |
| 4857 struct buffer *b = XBUFFER (w->buffer); | |
| 665 | 4858 Charbpos opoint = BUF_PT (b); |
| 4859 Charbpos startp; | |
| 428 | 4860 |
| 4861 if (NILP (n)) | |
| 4862 startp = start_with_line_at_pixpos (w, opoint, window_half_pixpos (w)); | |
| 4863 else | |
| 4864 { | |
| 4865 n = Fprefix_numeric_value (n); | |
| 4866 CHECK_INT (n); | |
| 4867 startp = start_with_point_on_display_line (w, opoint, XINT (n)); | |
| 4868 } | |
| 4869 | |
| 4870 Fset_marker (w->start[CURRENT_DISP], make_int (startp), w->buffer); | |
| 4871 | |
| 4872 w->start_at_line_beg = beginning_of_line_p (b, startp); | |
| 4873 w->force_start = 1; | |
| 4874 MARK_WINDOWS_CHANGED (w); | |
| 4875 return Qnil; | |
| 4876 } | |
| 4877 | |
| 4878 DEFUN ("move-to-window-line", Fmove_to_window_line, 1, 2, "_P", /* | |
| 4879 Position point relative to WINDOW. | |
| 4880 With no argument, position text at center of window. | |
| 4881 An argument specifies window line; zero means top of window, | |
| 4882 negative means relative to bottom of window. | |
| 4883 If WINDOW is nil, the selected window is used. | |
| 4884 */ | |
| 4885 (arg, window)) | |
| 4886 { | |
| 4887 struct window *w; | |
| 4888 struct buffer *b; | |
| 4889 int height; | |
| 665 | 4890 Charbpos start, new_point; |
| 428 | 4891 int selected; |
| 4892 | |
| 4893 /* Don't use decode_window() because we need the new value of | |
| 4894 WINDOW. */ | |
| 4895 if (NILP (window)) | |
| 4896 window = Fselected_window (Qnil); | |
| 4897 else | |
| 4898 CHECK_LIVE_WINDOW (window); | |
| 4899 w = XWINDOW (window); | |
| 4900 b = XBUFFER (w->buffer); | |
| 4901 | |
| 4902 height = window_displayed_height (w); | |
| 4903 selected = EQ (window, Fselected_window (w->frame)); | |
| 4904 | |
| 4905 if (NILP (arg)) | |
| 4906 { | |
| 4907 int retval; | |
| 4908 | |
| 4909 if (XINT (w->last_modified[CURRENT_DISP]) >= BUF_MODIFF (b) | |
| 4910 && XINT (w->last_facechange[CURRENT_DISP]) >= BUF_FACECHANGE (b)) | |
| 4911 { | |
| 4912 new_point = point_at_center (w, CURRENT_DISP, 0, 0); | |
| 4913 | |
| 844 | 4914 /* #### Here we are checking the selected window of the frame |
| 4915 instead of the selected window period. Elsewhere we check | |
| 4916 the selected window of the device. What a mess! */ | |
| 428 | 4917 if (selected) |
| 4918 BUF_SET_PT (b, new_point); | |
| 4919 else | |
| 4920 Fset_window_point (window, make_int (new_point)); | |
| 4921 | |
| 4922 retval = line_at_center (w, CURRENT_DISP, 0, 0); | |
| 4923 } | |
| 4924 else | |
| 4925 { | |
| 4926 start = marker_position (w->start[CURRENT_DISP]); | |
| 4927 if (start < BUF_BEGV (b)) | |
| 4928 start = BUF_BEGV (b); | |
| 4929 else if (start > BUF_ZV (b)) | |
| 4930 start = BUF_ZV (b); | |
| 4931 | |
| 4932 if (selected) | |
| 4933 new_point = BUF_PT (b); | |
| 4934 else | |
| 4935 new_point = marker_position (w->pointm[CURRENT_DISP]); | |
| 4936 | |
| 4937 new_point = point_at_center (w, CMOTION_DISP, start, BUF_PT (b)); | |
| 4938 | |
| 4939 if (selected) | |
| 4940 BUF_SET_PT (b, new_point); | |
| 4941 else | |
| 4942 Fset_window_point (window, make_int (new_point)); | |
| 4943 | |
| 4944 retval = line_at_center (w, CMOTION_DISP, start, BUF_PT (b)); | |
| 4945 } | |
| 4946 | |
| 4947 return make_int (retval); | |
| 4948 } | |
| 4949 else | |
| 4950 { | |
| 4951 /* #### Is this going to work right when at eob? */ | |
| 4952 arg = Fprefix_numeric_value (arg); | |
| 4953 if (XINT (arg) < 0) | |
| 793 | 4954 arg = make_int (XINT (arg) + height); |
| 428 | 4955 } |
| 4956 | |
| 4957 start = marker_position (w->start[CURRENT_DISP]); | |
| 4958 if (start < BUF_BEGV (b) || start > BUF_ZV (b)) | |
| 4959 { | |
| 4960 if (selected) | |
| 4961 new_point = BUF_PT (b); | |
| 4962 else | |
| 4963 new_point = marker_position (w->pointm[CURRENT_DISP]); | |
| 4964 | |
| 4965 new_point = vmotion (XWINDOW (window), new_point, -height / 2, 0); | |
| 4966 | |
| 4967 if (selected) | |
| 4968 BUF_SET_PT (b, new_point); | |
| 4969 else | |
| 4970 Fset_window_point (window, make_int (new_point)); | |
| 4971 | |
| 4972 Fset_marker (w->start[CURRENT_DISP], make_int (new_point), | |
| 4973 w->buffer); | |
| 4974 w->start_at_line_beg = beginning_of_line_p (b, new_point); | |
| 4975 w->force_start = 1; | |
| 4976 } | |
| 4977 else | |
| 4978 { | |
| 4979 if (selected) | |
| 4980 BUF_SET_PT (b, start); | |
| 4981 else | |
| 4982 Fset_window_point (window, make_int (start)); | |
| 4983 } | |
| 4984 | |
| 4985 if (selected) | |
| 4986 return Fvertical_motion (arg, window, Qnil); | |
| 4987 else | |
| 4988 { | |
| 4989 int vpos; | |
| 4990 new_point = vmotion (XWINDOW (window), | |
| 4991 marker_position (w->pointm[CURRENT_DISP]), | |
| 4992 XINT (arg), &vpos); | |
| 4993 Fset_window_point (window, make_int (new_point)); | |
| 4994 return make_int (vpos); | |
| 4995 } | |
| 4996 } | |
| 4997 | |
| 4998 | |
| 4999 static int | |
| 5000 map_windows_1 (Lisp_Object window, | |
| 5001 int (*mapfun) (struct window *w, void *closure), | |
| 5002 void *closure) | |
| 5003 { | |
| 5004 for (; !NILP (window); window = XWINDOW (window)->next) | |
| 5005 { | |
| 5006 int retval; | |
| 5007 struct window *w = XWINDOW (window); | |
| 5008 | |
| 5009 if (!NILP (w->vchild)) | |
| 5010 retval = map_windows_1 (w->vchild, mapfun, closure); | |
| 5011 else if (!NILP (w->hchild)) | |
| 5012 retval = map_windows_1 (w->hchild, mapfun, closure); | |
| 5013 else | |
| 5014 retval = (mapfun) (w, closure); | |
| 5015 | |
| 5016 if (retval) | |
| 5017 return retval; | |
| 5018 } | |
| 5019 | |
| 5020 return 0; | |
| 5021 } | |
| 5022 | |
| 5023 /* Map MAPFUN over the windows in F. CLOSURE is passed to each | |
| 5024 invocation of MAPFUN. If any invocation of MAPFUN returns | |
| 5025 non-zero, the mapping is halted. Otherwise, map_windows() maps | |
| 5026 over all windows in F. | |
| 5027 | |
| 800 | 5028 If F is null, map over all frames on all devices and consoles. |
| 5029 | |
| 428 | 5030 If MAPFUN creates or deletes windows, the behavior is undefined. */ |
| 5031 | |
| 5032 int | |
| 5033 map_windows (struct frame *f, int (*mapfun) (struct window *w, void *closure), | |
| 5034 void *closure) | |
| 5035 { | |
| 5036 if (f) | |
| 5037 return map_windows_1 (FRAME_ROOT_WINDOW (f), mapfun, closure); | |
| 5038 else | |
| 5039 { | |
| 5040 Lisp_Object frmcons, devcons, concons; | |
| 5041 | |
| 5042 FRAME_LOOP_NO_BREAK(frmcons, devcons, concons) | |
| 5043 { | |
| 5044 int v = map_windows_1 (FRAME_ROOT_WINDOW (XFRAME (XCAR (frmcons))), | |
| 5045 mapfun, closure); | |
| 5046 if (v) | |
| 5047 return v; | |
| 5048 } | |
| 5049 } | |
| 5050 | |
| 5051 return 0; | |
| 5052 } | |
| 5053 | |
| 5054 | |
| 5055 static void | |
| 2286 | 5056 modeline_shadow_thickness_changed (Lisp_Object UNUSED (specifier), |
| 5057 struct window *w, | |
| 5058 Lisp_Object UNUSED (oldval)) | |
| 428 | 5059 { |
| 5060 w->shadow_thickness_changed = 1; | |
| 5061 MARK_WINDOWS_CHANGED (w); | |
| 5062 } | |
| 5063 | |
| 5064 static void | |
| 2286 | 5065 vertical_divider_changed_in_window (Lisp_Object UNUSED (specifier), |
| 428 | 5066 struct window *w, |
| 2286 | 5067 Lisp_Object UNUSED (oldval)) |
| 428 | 5068 { |
| 5069 MARK_WINDOWS_CHANGED (w); | |
| 5070 MARK_FRAME_WINDOWS_STRUCTURE_CHANGED (XFRAME (WINDOW_FRAME (w))); | |
| 5071 } | |
| 5072 | |
| 5073 /* also used in scrollbar.c */ | |
| 5074 void | |
| 2286 | 5075 some_window_value_changed (Lisp_Object UNUSED (specifier), |
| 5076 struct window *w, | |
| 5077 Lisp_Object UNUSED (oldval)) | |
| 428 | 5078 { |
| 5079 MARK_WINDOWS_CHANGED (w); | |
| 5080 } | |
| 5081 | |
| 5082 #ifdef MEMORY_USAGE_STATS | |
| 5083 | |
| 5084 struct window_stats | |
| 5085 { | |
| 5086 int face; | |
| 5087 int glyph; | |
| 5088 #ifdef HAVE_SCROLLBARS | |
| 5089 int scrollbar; | |
| 5090 #endif | |
| 5091 int line_start; | |
| 5092 int other_redisplay; | |
| 5093 int other; | |
| 5094 }; | |
| 5095 | |
| 5096 static void | |
| 5097 compute_window_mirror_usage (struct window_mirror *mir, | |
| 5098 struct window_stats *stats, | |
| 5099 struct overhead_stats *ovstats) | |
| 5100 { | |
| 5101 if (!mir) | |
| 5102 return; | |
| 3024 | 5103 stats->other += LISPOBJ_STORAGE_SIZE (mir, sizeof (*mir), ovstats); |
| 428 | 5104 #ifdef HAVE_SCROLLBARS |
| 5105 { | |
| 5106 struct device *d = XDEVICE (FRAME_DEVICE (mir->frame)); | |
| 5107 | |
| 5108 stats->scrollbar += | |
| 5109 compute_scrollbar_instance_usage (d, mir->scrollbar_vertical_instance, | |
| 5110 ovstats); | |
| 5111 stats->scrollbar += | |
| 5112 compute_scrollbar_instance_usage (d, mir->scrollbar_horizontal_instance, | |
| 5113 ovstats); | |
| 5114 } | |
| 5115 #endif /* HAVE_SCROLLBARS */ | |
| 5116 stats->other_redisplay += | |
| 5117 compute_display_line_dynarr_usage (mir->current_display_lines, ovstats); | |
| 5118 stats->other_redisplay += | |
| 5119 compute_display_line_dynarr_usage (mir->desired_display_lines, ovstats); | |
| 5120 } | |
| 5121 | |
| 5122 static void | |
| 5123 compute_window_usage (struct window *w, struct window_stats *stats, | |
| 5124 struct overhead_stats *ovstats) | |
| 5125 { | |
| 5126 xzero (*stats); | |
| 3024 | 5127 stats->other += LISPOBJ_STORAGE_SIZE (w, sizeof (*w), ovstats); |
| 428 | 5128 stats->face += compute_face_cachel_usage (w->face_cachels, ovstats); |
| 5129 stats->glyph += compute_glyph_cachel_usage (w->glyph_cachels, ovstats); | |
| 5130 stats->line_start += | |
| 5131 compute_line_start_cache_dynarr_usage (w->line_start_cache, ovstats); | |
| 5132 compute_window_mirror_usage (find_window_mirror (w), stats, ovstats); | |
| 5133 } | |
| 5134 | |
| 5135 DEFUN ("window-memory-usage", Fwindow_memory_usage, 1, 1, 0, /* | |
| 5136 Return stats about the memory usage of window WINDOW. | |
| 5137 The values returned are in the form of an alist of usage types and byte | |
| 5138 counts. The byte counts attempt to encompass all the memory used | |
| 5139 by the window (separate from the memory logically associated with a | |
| 5140 buffer or frame), including internal structures and any malloc() | |
| 5141 overhead associated with them. In practice, the byte counts are | |
| 5142 underestimated because certain memory usage is very hard to determine | |
| 5143 \(e.g. the amount of memory used inside the Xt library or inside the | |
| 5144 X server) and because there is other stuff that might logically | |
| 5145 be associated with a window, buffer, or frame (e.g. window configurations, | |
| 5146 glyphs) but should not obviously be included in the usage counts. | |
| 5147 | |
| 5148 Multiple slices of the total memory usage may be returned, separated | |
| 5149 by a nil. Each slice represents a particular view of the memory, a | |
| 5150 particular way of partitioning it into groups. Within a slice, there | |
| 5151 is no overlap between the groups of memory, and each slice collectively | |
| 5152 represents all the memory concerned. | |
| 5153 */ | |
| 5154 (window)) | |
| 5155 { | |
| 5156 struct window_stats stats; | |
| 5157 struct overhead_stats ovstats; | |
| 5158 Lisp_Object val = Qnil; | |
| 5159 | |
| 5160 CHECK_WINDOW (window); /* dead windows should be allowed, no? */ | |
| 5161 xzero (ovstats); | |
| 5162 compute_window_usage (XWINDOW (window), &stats, &ovstats); | |
| 5163 | |
| 5164 val = acons (Qface_cache, make_int (stats.face), val); | |
| 5165 val = acons (Qglyph_cache, make_int (stats.glyph), val); | |
| 5166 #ifdef HAVE_SCROLLBARS | |
| 5167 val = acons (Qscrollbar_instances, make_int (stats.scrollbar), val); | |
| 5168 #endif | |
| 5169 val = acons (Qline_start_cache, make_int (stats.line_start), val); | |
| 5170 val = acons (Qother_redisplay, make_int (stats.other_redisplay), val); | |
| 5171 val = acons (Qother, make_int (stats.other), val); | |
| 5172 val = Fcons (Qnil, val); | |
| 5173 val = acons (Qactually_requested, make_int (ovstats.was_requested), val); | |
| 5174 val = acons (Qmalloc_overhead, make_int (ovstats.malloc_overhead), val); | |
| 5175 val = acons (Qdynarr_overhead, make_int (ovstats.dynarr_overhead), val); | |
| 5176 | |
| 5177 return Fnreverse (val); | |
| 5178 } | |
| 5179 | |
| 5180 #endif /* MEMORY_USAGE_STATS */ | |
| 5181 | |
| 5182 /* Mark all subwindows of a window as deleted. The argument | |
| 5183 W is actually the subwindow tree of the window in question. */ | |
| 5184 | |
| 5185 void | |
| 5186 delete_all_subwindows (struct window *w) | |
| 5187 { | |
| 5188 if (!NILP (w->next)) delete_all_subwindows (XWINDOW (w->next)); | |
| 5189 if (!NILP (w->vchild)) delete_all_subwindows (XWINDOW (w->vchild)); | |
| 5190 if (!NILP (w->hchild)) delete_all_subwindows (XWINDOW (w->hchild)); | |
| 5191 | |
| 5192 mark_window_as_deleted (w); | |
| 5193 } | |
| 5194 | |
| 5195 Lisp_Object | |
| 5196 save_window_excursion_unwind (Lisp_Object window_config) | |
| 5197 { | |
| 1149 | 5198 Lisp_Object val = call1 (Qset_window_configuration, window_config); |
| 428 | 5199 return val; |
| 5200 } | |
| 5201 | |
| 5202 DEFUN ("save-window-excursion", Fsave_window_excursion, 0, UNEVALLED, 0, /* | |
| 5203 Execute body, preserving window sizes and contents. | |
| 5204 Restores which buffer appears in which window, where display starts, | |
| 5205 as well as the current buffer. | |
| 5206 Does not restore the value of point in current buffer. | |
| 5207 */ | |
| 5208 (args)) | |
| 5209 { | |
| 5210 /* This function can GC */ | |
| 5211 int speccount = specpdl_depth (); | |
| 5212 | |
| 5213 record_unwind_protect (save_window_excursion_unwind, | |
| 1149 | 5214 call1 (Qcurrent_window_configuration, Qnil)); |
| 771 | 5215 return unbind_to_1 (speccount, Fprogn (args)); |
| 428 | 5216 } |
| 1149 | 5217 |
| 2289 | 5218 static int |
| 5219 get_current_pixel_pos (Lisp_Object window, Lisp_Object pos, | |
| 5220 struct window **w, | |
| 5221 struct rune **rb, struct display_line **dl) | |
| 428 | 5222 { |
| 2289 | 5223 display_line_dynarr *dla; |
| 5224 struct display_block *db = NULL; | |
| 5225 int x, y; | |
| 5226 | |
| 5227 *rb = NULL; | |
| 5228 *dl = NULL; | |
| 5229 *w = decode_window (window); | |
| 5230 dla = window_display_lines (*w, CURRENT_DISP); | |
| 5231 x = (*w)->last_point_x[CURRENT_DISP]; | |
| 5232 y = (*w)->last_point_y[CURRENT_DISP]; | |
| 5233 if (MINI_WINDOW_P (*w)) | |
| 5234 return 0; | |
| 428 | 5235 |
| 5236 if (y<0 || x<0 || y >= Dynarr_length (dla) || !NILP (pos)) | |
| 5237 { | |
| 5238 int first_line, i; | |
| 665 | 5239 Charbpos point; |
| 428 | 5240 |
| 5241 if (NILP (pos)) | |
| 5242 pos = Fwindow_point (window); | |
| 438 | 5243 |
| 428 | 5244 CHECK_INT (pos); |
| 5245 point = XINT (pos); | |
| 5246 | |
| 5247 if (Dynarr_length (dla) && Dynarr_atp (dla, 0)->modeline) | |
| 5248 first_line = 1; | |
| 5249 else | |
| 5250 first_line = 0; | |
| 5251 | |
| 5252 for (i = first_line; i < Dynarr_length (dla); i++) | |
| 5253 { | |
| 2289 | 5254 *dl = Dynarr_atp (dla, i); |
| 428 | 5255 /* find the vertical location first */ |
| 2289 | 5256 if (point >= (*dl)->charpos && point <= (*dl)->end_charpos) |
| 428 | 5257 { |
| 2289 | 5258 db = get_display_block_from_line (*dl, TEXT); |
| 428 | 5259 for (i = 0; i < Dynarr_length (db->runes); i++) |
| 5260 { | |
| 2289 | 5261 *rb = Dynarr_atp (db->runes, i); |
| 2290 | 5262 if (point <= (*rb)->charpos) |
| 826 | 5263 goto found_charpos; |
| 428 | 5264 } |
| 2289 | 5265 return 0; |
| 428 | 5266 } |
| 5267 } | |
| 2289 | 5268 return 0; |
| 826 | 5269 found_charpos: |
| 428 | 5270 ; |
| 5271 } | |
| 5272 else | |
| 5273 { | |
| 442 | 5274 /* optimized case */ |
| 2289 | 5275 *dl = Dynarr_atp (dla, y); |
| 5276 db = get_display_block_from_line (*dl, TEXT); | |
| 428 | 5277 |
| 5278 if (x >= Dynarr_length (db->runes)) | |
| 2289 | 5279 return 0; |
| 5280 | |
| 5281 *rb = Dynarr_atp (db->runes, x); | |
| 428 | 5282 } |
| 5283 | |
| 2289 | 5284 return 1; |
| 5285 } | |
| 5286 | |
| 5287 DEFUN ("current-pixel-column", Fcurrent_pixel_column, 0, 2, 0, /* | |
| 5288 Return the horizontal pixel position of point POS in window. | |
| 5289 Beginning of line is column 0. If WINDOW is nil, the current window | |
| 5290 is assumed. If POS is nil, point is assumed. Note that POS must be | |
| 5291 visible for a non-nil result to be returned. This is calculated using | |
| 5292 the redisplay display tables; because of this, the returned value will | |
| 5293 only be correct if the redisplay tables are up-to-date. Use | |
| 5294 \"(sit-for 0)\" to insure that they are; however, if WINDOW is part of | |
| 5295 a new frame, use the following instead: | |
| 5296 (while (not (frame-visible-p frame)) (sleep-for .5)) | |
| 5297 */ | |
| 5298 (window, pos)) | |
| 5299 { | |
| 5300 struct window* w; | |
| 5301 struct display_line *dl; | |
| 5302 struct rune* rb; | |
| 5303 | |
| 5304 if (!get_current_pixel_pos(window, pos, &w, &rb, &dl)) | |
| 5305 return Qnil; | |
| 5306 | |
| 428 | 5307 return make_int (rb->xpos - WINDOW_LEFT (w)); |
| 5308 } | |
| 5309 | |
| 2289 | 5310 DEFUN ("current-pixel-row", Fcurrent_pixel_row, 0, 2, 0, /* |
| 5311 Return the vertical pixel position of point POS in window. Top of | |
| 5312 window is row 0. If WINDOW is nil, the current window is assumed. If | |
| 5313 POS is nil, point is assumed. Note that POS must be visible for a | |
| 5314 non-nil result to be returned. This is calculated using the redisplay | |
| 5315 display tables; because of this, the returned value will only be | |
| 5316 correct if the redisplay tables are up-to-date. Use \"(sit-for 0)\" | |
| 5317 to insure that they are; however, if WINDOW is part of a new frame, | |
| 5318 use the following instead: | |
| 5319 (while (not (frame-visible-p frame)) (sleep-for .5)) | |
| 5320 */ | |
| 5321 (window, pos)) | |
| 5322 { | |
| 5323 struct window* w; | |
| 5324 struct display_line *dl; | |
| 5325 struct rune* rb; | |
| 5326 | |
| 5327 if (!get_current_pixel_pos(window, pos, &w, &rb, &dl)) | |
| 5328 return Qnil; | |
| 5329 | |
| 5330 return make_int (dl->ypos - dl->ascent - WINDOW_TOP (w)); | |
| 5331 } | |
| 5332 | |
| 428 | 5333 |
| 5334 #ifdef DEBUG_XEMACS | |
| 5335 /* This is short and simple in elisp, but... it was written to debug | |
| 5336 problems purely on the C side. That is where we need to call it so | |
| 5337 here it is. */ | |
| 5338 static void | |
| 5339 debug_print_window (Lisp_Object window, int level) | |
| 5340 { | |
| 5341 int i; | |
| 5342 Lisp_Object child = Fwindow_first_vchild (window); | |
| 5343 | |
| 5344 if (NILP (child)) | |
| 5345 child = Fwindow_first_hchild (window); | |
| 5346 | |
| 5347 for (i = level; i > 0; i--) | |
| 442 | 5348 stderr_out ("\t"); |
| 5349 | |
| 5350 stderr_out ("#<window"); | |
| 428 | 5351 { |
| 5352 Lisp_Object buffer = XWINDOW (window)->buffer; | |
| 5353 if (!NILP (buffer) && BUFFERP (buffer)) | |
| 442 | 5354 stderr_out (" on %s", XSTRING_DATA (XBUFFER (buffer)->name)); |
| 428 | 5355 } |
| 442 | 5356 stderr_out (" 0x%x>", XWINDOW (window)->header.uid); |
| 428 | 5357 |
| 5358 while (!NILP (child)) | |
| 5359 { | |
| 5360 debug_print_window (child, level + 1); | |
| 5361 child = Fwindow_next_child (child); | |
| 5362 } | |
| 5363 } | |
| 5364 | |
| 5365 void debug_print_windows (struct frame *f); | |
| 5366 void | |
| 5367 debug_print_windows (struct frame *f) | |
| 5368 { | |
| 5369 debug_print_window (f->root_window, 0); | |
| 5370 putc ('\n', stderr); | |
| 5371 } | |
| 5372 #endif /* DEBUG_XEMACS */ | |
| 5373 | |
| 5374 | |
| 5375 /************************************************************************/ | |
| 5376 /* initialization */ | |
| 5377 /************************************************************************/ | |
| 5378 | |
| 5379 void | |
| 5380 syms_of_window (void) | |
| 5381 { | |
|
5117
3742ea8250b5
Checking in final CVS version of workspace 'ben-lisp-object'
Ben Wing <ben@xemacs.org>
parents:
3078
diff
changeset
|
5382 INIT_LISP_OBJECT (window); |
|
3742ea8250b5
Checking in final CVS version of workspace 'ben-lisp-object'
Ben Wing <ben@xemacs.org>
parents:
3078
diff
changeset
|
5383 INIT_LISP_OBJECT (window_mirror); |
| 442 | 5384 |
| 563 | 5385 DEFSYMBOL (Qwindowp); |
| 5386 DEFSYMBOL (Qwindow_live_p); | |
| 5387 DEFSYMBOL (Qdisplay_buffer); | |
| 428 | 5388 |
| 5389 #ifdef MEMORY_USAGE_STATS | |
| 563 | 5390 DEFSYMBOL (Qface_cache); |
| 5391 DEFSYMBOL (Qglyph_cache); | |
| 5392 DEFSYMBOL (Qline_start_cache); | |
| 428 | 5393 #ifdef HAVE_SCROLLBARS |
| 563 | 5394 DEFSYMBOL (Qscrollbar_instances); |
| 428 | 5395 #endif |
| 563 | 5396 DEFSYMBOL (Qother_redisplay); |
| 428 | 5397 /* Qother in general.c */ |
| 5398 #endif | |
| 5399 | |
| 707 | 5400 DEFSYMBOL (Qtruncate_partial_width_windows); |
| 1149 | 5401 DEFSYMBOL (Qcurrent_window_configuration); |
| 5402 DEFSYMBOL (Qset_window_configuration); | |
| 707 | 5403 |
| 428 | 5404 DEFSUBR (Fselected_window); |
| 5405 DEFSUBR (Flast_nonminibuf_window); | |
| 5406 DEFSUBR (Fminibuffer_window); | |
| 5407 DEFSUBR (Fwindow_minibuffer_p); | |
| 5408 DEFSUBR (Fwindowp); | |
| 5409 DEFSUBR (Fwindow_live_p); | |
| 5410 DEFSUBR (Fwindow_first_hchild); | |
| 5411 DEFSUBR (Fwindow_first_vchild); | |
| 5412 DEFSUBR (Fwindow_next_child); | |
| 5413 DEFSUBR (Fwindow_previous_child); | |
| 5414 DEFSUBR (Fwindow_parent); | |
| 5415 DEFSUBR (Fwindow_lowest_p); | |
| 5416 DEFSUBR (Fwindow_truncated_p); | |
| 5417 DEFSUBR (Fwindow_highest_p); | |
| 5418 DEFSUBR (Fwindow_leftmost_p); | |
| 5419 DEFSUBR (Fwindow_rightmost_p); | |
| 5420 DEFSUBR (Fpos_visible_in_window_p); | |
| 5421 DEFSUBR (Fwindow_buffer); | |
| 5422 DEFSUBR (Fwindow_frame); | |
| 5423 DEFSUBR (Fwindow_height); | |
| 5424 DEFSUBR (Fwindow_displayed_height); | |
| 5425 DEFSUBR (Fwindow_width); | |
| 442 | 5426 DEFSUBR (Fwindow_full_width); |
| 428 | 5427 DEFSUBR (Fwindow_pixel_height); |
| 5428 DEFSUBR (Fwindow_pixel_width); | |
| 442 | 5429 DEFSUBR (Fwindow_text_area_height); |
| 428 | 5430 DEFSUBR (Fwindow_text_area_pixel_height); |
| 5431 DEFSUBR (Fwindow_displayed_text_pixel_height); | |
| 5432 DEFSUBR (Fwindow_text_area_pixel_width); | |
| 5433 DEFSUBR (Fwindow_hscroll); | |
| 438 | 5434 DEFSUBR (Fset_window_hscroll); |
| 428 | 5435 DEFSUBR (Fmodeline_hscroll); |
| 5436 DEFSUBR (Fset_modeline_hscroll); | |
| 5437 DEFSUBR (Fwindow_pixel_edges); | |
| 5438 DEFSUBR (Fwindow_text_area_pixel_edges); | |
| 5439 DEFSUBR (Fwindow_point); | |
| 5440 DEFSUBR (Fwindow_start); | |
| 5441 DEFSUBR (Fwindow_end); | |
| 442 | 5442 DEFSUBR (Fwindow_last_line_visible_height); |
| 428 | 5443 DEFSUBR (Fset_window_point); |
| 5444 DEFSUBR (Fset_window_start); | |
| 5445 DEFSUBR (Fwindow_dedicated_p); | |
| 5446 DEFSUBR (Fset_window_dedicated_p); | |
| 5447 DEFSUBR (Fnext_window); | |
| 5448 DEFSUBR (Fprevious_window); | |
| 5449 DEFSUBR (Fnext_vertical_window); | |
| 5450 DEFSUBR (Fother_window); | |
| 5451 DEFSUBR (Fget_lru_window); | |
| 5452 DEFSUBR (Fget_largest_window); | |
| 5453 DEFSUBR (Fget_buffer_window); | |
| 5454 DEFSUBR (Fwindow_left_margin_pixel_width); | |
| 5455 DEFSUBR (Fwindow_right_margin_pixel_width); | |
| 5456 DEFSUBR (Fdelete_other_windows); | |
| 5457 DEFSUBR (Fdelete_windows_on); | |
| 5458 DEFSUBR (Freplace_buffer_in_windows); | |
| 5459 DEFSUBR (Fdelete_window); | |
| 5460 DEFSUBR (Fset_window_buffer); | |
| 5461 DEFSUBR (Fselect_window); | |
| 5462 DEFSUBR (Fsplit_window); | |
| 5463 DEFSUBR (Fenlarge_window); | |
| 5464 DEFSUBR (Fenlarge_window_pixels); | |
| 5465 DEFSUBR (Fshrink_window); | |
| 5466 DEFSUBR (Fshrink_window_pixels); | |
| 5467 DEFSUBR (Fscroll_up); | |
| 5468 DEFSUBR (Fscroll_down); | |
| 5469 DEFSUBR (Fscroll_left); | |
| 5470 DEFSUBR (Fscroll_right); | |
| 5471 DEFSUBR (Fother_window_for_scrolling); | |
| 5472 DEFSUBR (Fscroll_other_window); | |
| 5473 DEFSUBR (Fcenter_to_window_line); | |
| 5474 DEFSUBR (Fmove_to_window_line); | |
| 5475 #ifdef MEMORY_USAGE_STATS | |
| 5476 DEFSUBR (Fwindow_memory_usage); | |
| 5477 #endif | |
| 5478 DEFSUBR (Fsave_window_excursion); | |
| 5479 DEFSUBR (Fcurrent_pixel_column); | |
| 2289 | 5480 DEFSUBR (Fcurrent_pixel_row); |
| 428 | 5481 } |
| 5482 | |
| 5483 void | |
| 5484 reinit_vars_of_window (void) | |
| 5485 { | |
| 5486 /* Make sure all windows get marked */ | |
| 5487 minibuf_window = Qnil; | |
| 5488 staticpro_nodump (&minibuf_window); | |
| 5489 } | |
| 5490 | |
| 5491 void | |
| 5492 vars_of_window (void) | |
| 5493 { | |
| 5494 DEFVAR_BOOL ("scroll-on-clipped-lines", &scroll_on_clipped_lines /* | |
| 5495 *Non-nil means to scroll if point lands on a line which is clipped. | |
| 5496 */ ); | |
| 5497 scroll_on_clipped_lines = 1; | |
| 5498 | |
| 5499 DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function /* | |
| 5500 Non-nil means call as function to display a help buffer. | |
| 5501 The function is called with one argument, the buffer to be displayed. | |
| 5502 Used by `with-output-to-temp-buffer'. | |
| 5503 If this function is used, then it must do the entire job of showing | |
| 5504 the buffer; `temp-buffer-show-hook' is not run unless this function runs it. | |
| 442 | 5505 \(`temp-buffer-show-hook' is obsolete. Do not use in new code.) |
| 428 | 5506 */ ); |
| 5507 Vtemp_buffer_show_function = Qnil; | |
| 5508 | |
| 5509 DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuffer_scroll_window /* | |
| 5510 Non-nil means it is the window that \\<minibuffer-local-map>\\[scroll-other-window] in minibuffer should scroll. | |
| 5511 */ ); | |
| 5512 Vminibuffer_scroll_window = Qnil; | |
| 5513 | |
| 5514 DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer /* | |
| 5515 If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window. | |
| 5516 */ ); | |
| 5517 Vother_window_scroll_buffer = Qnil; | |
| 5518 | |
| 5519 DEFVAR_LISP ("window-pixel-scroll-increment", &Vwindow_pixel_scroll_increment /* | |
| 5520 *Number of pixels to scroll by per requested line. | |
| 5521 If nil then normal line scrolling occurs regardless of line height. | |
| 5522 If t then scrolling is done in increments equal to the height of the default face. | |
| 5523 */ ); | |
| 5524 Vwindow_pixel_scroll_increment = Qt; | |
| 5525 | |
| 5526 DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines /* | |
| 5527 *Number of lines of continuity when scrolling by screenfuls. | |
| 5528 */ ); | |
| 5529 next_screen_context_lines = 2; | |
| 5530 | |
| 5531 DEFVAR_INT ("window-min-height", &window_min_height /* | |
| 5532 *Delete any window less than this tall (including its modeline). | |
| 5533 */ ); | |
| 5534 window_min_height = 4; | |
| 5535 | |
| 5536 DEFVAR_INT ("window-min-width", &window_min_width /* | |
| 5537 *Delete any window less than this wide. | |
| 5538 */ ); | |
| 5539 window_min_width = 10; | |
| 5540 } | |
| 5541 | |
| 5542 void | |
| 5543 specifier_vars_of_window (void) | |
| 5544 { | |
| 5545 DEFVAR_SPECIFIER ("modeline-shadow-thickness", &Vmodeline_shadow_thickness /* | |
| 5546 *How thick to draw 3D shadows around modelines. | |
| 5547 If this is set to 0, modelines will be the traditional 2D. Sizes above | |
| 5548 10 will be accepted but the maximum thickness that will be drawn is 10. | |
| 5549 This is a specifier; use `set-specifier' to change it. | |
| 5550 */ ); | |
| 5551 Vmodeline_shadow_thickness = Fmake_specifier (Qinteger); | |
| 5552 /* The initial value for modeline-shadow-thickness is 2, but if the | |
| 5553 user removes all specifications we provide a fallback value of 0, | |
| 5554 which is probably what was expected. */ | |
| 5555 set_specifier_fallback (Vmodeline_shadow_thickness, | |
| 5556 list1 (Fcons (Qnil, Qzero))); | |
| 5557 Fadd_spec_to_specifier (Vmodeline_shadow_thickness, make_int (2), | |
| 5558 Qnil, Qnil, Qnil); | |
| 5559 set_specifier_caching (Vmodeline_shadow_thickness, | |
| 438 | 5560 offsetof (struct window, modeline_shadow_thickness), |
| 428 | 5561 modeline_shadow_thickness_changed, |
| 444 | 5562 0, 0, 0); |
| 428 | 5563 |
| 5564 DEFVAR_SPECIFIER ("has-modeline-p", &Vhas_modeline_p /* | |
| 5565 *Whether the modeline should be displayed. | |
| 5566 This is a specifier; use `set-specifier' to change it. | |
| 5567 */ ); | |
| 5568 Vhas_modeline_p = Fmake_specifier (Qboolean); | |
| 5569 set_specifier_fallback (Vhas_modeline_p, | |
| 5570 list1 (Fcons (Qnil, Qt))); | |
| 5571 set_specifier_caching (Vhas_modeline_p, | |
| 438 | 5572 offsetof (struct window, has_modeline_p), |
| 428 | 5573 /* #### It's strange that we need a special |
| 5574 flag to indicate that the shadow-thickness | |
| 5575 has changed, but not one to indicate that | |
| 5576 the modeline has been turned off or on. */ | |
| 5577 some_window_value_changed, | |
| 444 | 5578 0, 0, 0); |
| 428 | 5579 |
| 5580 DEFVAR_SPECIFIER ("vertical-divider-always-visible-p", | |
| 5581 &Vvertical_divider_always_visible_p /* | |
| 5582 *Should XEmacs always display vertical dividers between windows. | |
| 5583 | |
| 5584 When this is non-nil, vertical dividers are always shown, and are | |
| 5585 draggable. When it is nil, vertical dividers are shown only when | |
| 5586 there are no scrollbars in between windows, and are not draggable. | |
| 5587 | |
| 5588 This is a specifier; use `set-specifier' to change it. | |
| 5589 */ ); | |
| 5590 Vvertical_divider_always_visible_p = Fmake_specifier (Qboolean); | |
| 5591 set_specifier_fallback (Vvertical_divider_always_visible_p, | |
| 5592 list1 (Fcons (Qnil, Qt))); | |
| 5593 set_specifier_caching (Vvertical_divider_always_visible_p, | |
| 438 | 5594 offsetof (struct window, |
| 5595 vertical_divider_always_visible_p), | |
| 428 | 5596 vertical_divider_changed_in_window, |
| 444 | 5597 0, 0, 0); |
| 428 | 5598 |
| 5599 DEFVAR_SPECIFIER ("vertical-divider-shadow-thickness", &Vvertical_divider_shadow_thickness /* | |
| 5600 *How thick to draw 3D shadows around vertical dividers. | |
| 5601 This is a specifier; use `set-specifier' to change it. | |
| 5602 */ ); | |
| 5603 Vvertical_divider_shadow_thickness = Fmake_specifier (Qinteger); | |
| 5604 set_specifier_fallback (Vvertical_divider_shadow_thickness, | |
| 5605 list1 (Fcons (Qnil, Qzero))); | |
| 5606 Fadd_spec_to_specifier (Vvertical_divider_shadow_thickness, make_int (2), | |
| 5607 Qnil, Qnil, Qnil); | |
| 5608 set_specifier_caching (Vvertical_divider_shadow_thickness, | |
| 438 | 5609 offsetof (struct window, |
| 5610 vertical_divider_shadow_thickness), | |
| 428 | 5611 vertical_divider_changed_in_window, |
| 444 | 5612 0, 0, 0); |
| 428 | 5613 DEFVAR_SPECIFIER ("vertical-divider-line-width", &Vvertical_divider_line_width /* |
| 5614 *The width of the vertical dividers, not including shadows. | |
| 5615 | |
| 5616 For TTY windows, divider line is always one character wide. When | |
| 5617 instance of this specifier is zero in a TTY window, no divider is | |
| 5618 drawn at all between windows. When non-zero, a one character wide | |
| 5619 divider is displayed. | |
| 5620 | |
| 5621 This is a specifier; use `set-specifier' to change it. | |
| 5622 */ ); | |
| 5623 | |
| 5624 Vvertical_divider_line_width = Fmake_specifier (Qnatnum); | |
| 5625 { | |
| 5626 Lisp_Object fb = Qnil; | |
| 5627 #ifdef HAVE_TTY | |
| 5628 fb = Fcons (Fcons (list1 (Qtty), make_int (1)), fb); | |
| 5629 #endif | |
| 462 | 5630 #ifdef HAVE_GTK |
| 5631 fb = Fcons (Fcons (list1 (Qgtk), make_int (3)), fb); | |
| 5632 #endif | |
| 428 | 5633 #ifdef HAVE_X_WINDOWS |
| 5634 fb = Fcons (Fcons (list1 (Qx), make_int (3)), fb); | |
| 5635 #endif | |
| 5636 #ifdef HAVE_MS_WINDOWS | |
| 5637 /* #### This should be made magic and made to obey system settings */ | |
| 5638 fb = Fcons (Fcons (list1 (Qmswindows), make_int (3)), fb); | |
| 5639 #endif | |
| 5640 set_specifier_fallback (Vvertical_divider_line_width, fb); | |
| 5641 } | |
| 5642 set_specifier_caching (Vvertical_divider_line_width, | |
| 438 | 5643 offsetof (struct window, |
| 5644 vertical_divider_line_width), | |
| 428 | 5645 vertical_divider_changed_in_window, |
| 444 | 5646 0, 0, 0); |
| 428 | 5647 |
| 5648 DEFVAR_SPECIFIER ("vertical-divider-spacing", &Vvertical_divider_spacing /* | |
| 5649 *How much space to leave around the vertical dividers. | |
| 5650 | |
| 5651 In TTY windows, spacing is always zero, and the value of this | |
| 5652 specifier is ignored. | |
| 5653 | |
| 5654 This is a specifier; use `set-specifier' to change it. | |
| 5655 */ ); | |
| 5656 Vvertical_divider_spacing = Fmake_specifier (Qnatnum); | |
| 5657 { | |
| 5658 Lisp_Object fb = Qnil; | |
| 5659 #ifdef HAVE_TTY | |
| 5660 fb = Fcons (Fcons (list1 (Qtty), Qzero), fb); | |
| 5661 #endif | |
| 5662 #ifdef HAVE_X_WINDOWS | |
| 5663 /* #### 3D dividers look great on MS Windows with spacing = 0. | |
| 5664 Should not the same value be the fallback under X? - kkm */ | |
| 5665 fb = Fcons (Fcons (list1 (Qx), make_int (2)), fb); | |
| 5666 #endif | |
| 462 | 5667 #ifdef HAVE_GTK |
| 5668 fb = Fcons (Fcons (list1 (Qgtk), Qzero), fb); | |
| 5669 #endif | |
| 428 | 5670 #ifdef HAVE_MS_WINDOWS |
| 5671 fb = Fcons (Fcons (list1 (Qmswindows), Qzero), fb); | |
| 5672 #endif | |
| 5673 set_specifier_fallback (Vvertical_divider_spacing, fb); | |
| 5674 } | |
| 5675 set_specifier_caching (Vvertical_divider_spacing, | |
| 438 | 5676 offsetof (struct window, vertical_divider_spacing), |
| 428 | 5677 vertical_divider_changed_in_window, |
| 444 | 5678 0, 0, 0); |
| 5679 } |