Mercurial > hg > xemacs-beta
annotate src/redisplay-output.c @ 4930:9f04877ce07e
fix up comments about finalizers and NEWGC internal objects
-------------------- ChangeLog entries follow: --------------------
src/ChangeLog addition:
2010-01-20 Ben Wing <ben@xemacs.org>
* lrecord.h:
* lrecord.h (enum lrecord_type):
* lrecord.h (struct lrecord_implementation):
Clean up description of finalizer methods. Clean up and expand
the long comment at the top of lrecord.h. Add a section about why
New-GC requires a bunch of new internal objects to be created (not
completely understood).
| author | Ben Wing <ben@xemacs.org> |
|---|---|
| date | Wed, 20 Jan 2010 04:20:49 -0600 |
| parents | 91b3d00e717f |
| children | 8b63e21b0436 |
| rev | line source |
|---|---|
| 428 | 1 /* Synchronize redisplay structures and output changes. |
| 2 Copyright (C) 1994, 1995 Board of Trustees, University of Illinois. | |
| 1318 | 3 Copyright (C) 1995, 1996, 2002, 2003 Ben Wing. |
| 428 | 4 Copyright (C) 1996 Chuck Thompson. |
| 863 | 5 Copyright (C) 1999, 2002 Andy Piper. |
| 428 | 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: Not in FSF. */ | |
| 25 | |
| 26 /* This file has been Mule-ized. */ | |
| 27 | |
| 28 /* Author: Chuck Thompson */ | |
| 29 | |
| 30 /* Heavily hacked for modularity, gutter and subwindow support by Andy | |
| 31 Piper. */ | |
| 32 | |
| 33 #include <config.h> | |
| 34 #include "lisp.h" | |
| 35 | |
| 36 #include "buffer.h" | |
| 37 #include "window.h" | |
| 872 | 38 #include "frame-impl.h" |
| 39 #include "device-impl.h" | |
| 428 | 40 #include "glyphs.h" |
| 41 #include "redisplay.h" | |
| 42 #include "faces.h" | |
| 446 | 43 #include "gutter.h" |
| 428 | 44 |
| 45 static int compare_runes (struct window *w, struct rune *crb, | |
| 46 struct rune *drb); | |
| 47 static void redraw_cursor_in_window (struct window *w, | |
| 48 int run_end_begin_glyphs); | |
| 49 static void redisplay_output_display_block (struct window *w, struct display_line *dl, | |
| 50 int block, int start, int end, int start_pixpos, | |
| 434 | 51 int cursor_start, int cursor_width, |
| 428 | 52 int cursor_height); |
| 434 | 53 static void redisplay_normalize_display_box (struct display_box* dest, |
| 428 | 54 struct display_glyph_area* src); |
| 55 static int redisplay_display_boxes_in_window_p (struct window* w, | |
| 56 struct display_box* db, | |
| 57 struct display_glyph_area* dga); | |
| 434 | 58 static void redisplay_clear_clipped_region (Lisp_Object locale, face_index findex, |
| 59 struct display_box* dest, | |
| 60 struct display_glyph_area* glyphsrc, | |
| 428 | 61 int fullheight_p, Lisp_Object); |
| 1318 | 62 static void redisplay_redraw_exposed_windows (Lisp_Object window, int x, |
| 63 int y, int width, int height); | |
| 428 | 64 |
| 65 /***************************************************************************** | |
| 66 sync_rune_structs | |
| 67 | |
| 68 Synchronize the given rune blocks. | |
| 69 ****************************************************************************/ | |
| 70 static void | |
| 2286 | 71 sync_rune_structs (struct window *UNUSED (w), rune_dynarr *cra, |
| 72 rune_dynarr *dra) | |
| 428 | 73 { |
| 74 int rune_elt; | |
| 75 int max_move = ((Dynarr_length (dra) > Dynarr_largest (cra)) | |
| 76 ? Dynarr_largest (cra) | |
| 77 : Dynarr_length (dra)); | |
| 78 | |
| 79 if (max_move) | |
| 80 { | |
| 81 /* #### Doing this directly breaks the encapsulation. But, the | |
| 4187 | 82 running time of this function has a measurable impact on |
| 83 redisplay performance so avoiding all excess overhead is a | |
| 84 good thing. Is all of this true? */ | |
| 428 | 85 memcpy (cra->base, dra->base, sizeof (struct rune) * max_move); |
| 86 Dynarr_set_size (cra, max_move); | |
| 87 } | |
| 88 else | |
| 89 Dynarr_reset (cra); | |
| 90 | |
| 91 for (rune_elt = max_move; rune_elt < Dynarr_length (dra); rune_elt++) | |
| 92 { | |
| 93 struct rune rb, *crb; | |
| 94 struct rune *drb = Dynarr_atp (dra, rune_elt); | |
| 95 | |
| 96 crb = &rb; | |
| 97 memcpy (crb, drb, sizeof (struct rune)); | |
| 98 Dynarr_add (cra, *crb); | |
| 99 } | |
| 100 } | |
| 101 | |
| 102 /***************************************************************************** | |
| 103 sync_display_line_structs | |
| 104 | |
| 105 For the given LINE in window W, make the current display line equal | |
| 106 the desired display line. | |
| 107 ****************************************************************************/ | |
| 442 | 108 void |
| 428 | 109 sync_display_line_structs (struct window *w, int line, int do_blocks, |
| 110 display_line_dynarr *cdla, | |
| 111 display_line_dynarr *ddla) | |
| 112 { | |
| 113 struct display_line dl, *clp, *dlp; | |
| 114 int db_elt; | |
| 800 | 115 int local = 0; |
| 428 | 116 |
| 4207 | 117 /* #### NOTE: practically, this is not needed because of the memcpy below. |
| 118 #### However, it's cleaner and bugs-in-the-future proof. -- dvl */ | |
| 119 DISPLAY_LINE_INIT (dl); | |
| 428 | 120 dlp = Dynarr_atp (ddla, line); |
| 121 if (line >= Dynarr_largest (cdla)) | |
| 122 { | |
| 123 clp = &dl; | |
| 124 clp->display_blocks = Dynarr_new (display_block); | |
| 800 | 125 local = 1; |
| 428 | 126 } |
| 127 else | |
| 128 { | |
| 129 clp = Dynarr_atp (cdla, line); | |
| 130 if (clp->display_blocks) | |
| 131 Dynarr_reset (clp->display_blocks); | |
| 132 if (clp->left_glyphs) | |
| 133 { | |
| 134 Dynarr_free (clp->left_glyphs); | |
| 135 clp->left_glyphs = 0; | |
| 136 } | |
| 137 if (clp->right_glyphs) | |
| 138 { | |
| 139 Dynarr_free (clp->right_glyphs); | |
| 140 clp->right_glyphs = 0; | |
| 141 } | |
| 142 } | |
| 143 { | |
| 144 display_block_dynarr *tdb = clp->display_blocks; | |
| 145 | |
| 146 memcpy (clp, dlp, sizeof (struct display_line)); | |
| 147 clp->display_blocks = tdb; | |
| 148 clp->left_glyphs = 0; | |
| 149 clp->right_glyphs = 0; | |
| 150 } | |
| 151 | |
| 800 | 152 if (do_blocks || line < Dynarr_length (cdla)) |
| 428 | 153 { |
| 800 | 154 for (db_elt = 0; db_elt < Dynarr_length (dlp->display_blocks); db_elt++) |
| 155 { | |
| 156 struct display_block db, *cdb; | |
| 157 struct display_block *ddb = Dynarr_atp (dlp->display_blocks, db_elt); | |
| 158 | |
| 159 if (db_elt >= Dynarr_largest (clp->display_blocks)) | |
| 160 { | |
| 161 cdb = &db; | |
| 162 memcpy (cdb, ddb, sizeof (struct display_block)); | |
| 163 cdb->runes = Dynarr_new (rune); | |
| 164 Dynarr_add (clp->display_blocks, *cdb); | |
| 165 } | |
| 166 else | |
| 167 { | |
| 168 rune_dynarr *tr; | |
| 169 | |
| 170 cdb = Dynarr_atp (clp->display_blocks, db_elt); | |
| 171 tr = cdb->runes; | |
| 172 memcpy (cdb, ddb, sizeof (struct display_block)); | |
| 173 cdb->runes = tr; | |
| 174 Dynarr_increment (clp->display_blocks); | |
| 175 } | |
| 176 | |
| 177 sync_rune_structs (w, cdb->runes, ddb->runes); | |
| 178 } | |
| 428 | 179 } |
| 180 | |
| 800 | 181 if (local) |
| 182 Dynarr_add (cdla, *clp); | |
| 183 else if (line >= Dynarr_length (cdla)) | |
| 428 | 184 { |
| 800 | 185 assert (line == Dynarr_length (cdla)); |
| 186 Dynarr_increment (cdla); | |
| 428 | 187 } |
| 188 } | |
| 189 | |
| 190 /***************************************************************************** | |
| 191 compare_runes | |
| 192 | |
| 448 | 193 Compare two runes to see if each of their fields is equal. If so, |
| 428 | 194 return true otherwise return false. |
| 195 ****************************************************************************/ | |
| 196 static int | |
| 197 compare_runes (struct window *w, struct rune *crb, struct rune *drb) | |
| 198 { | |
| 665 | 199 /* Do not compare the values of charbpos and endpos. They do not |
| 428 | 200 affect the display characteristics. */ |
| 201 | |
| 202 /* Note: (hanoi 6) spends 95% of its time in redisplay, and about | |
| 203 30% here. Not using bitfields for rune.type alone gives a redisplay | |
| 204 speed up of 10%. | |
| 205 | |
| 206 #### In profile arcs run of a normal Gnus session this function | |
| 207 is run 6.76 million times, only to return 1 in 6.73 million of | |
| 208 those. | |
| 209 | |
| 210 In addition a quick look GCC sparc assembly shows that GCC is not | |
| 211 doing a good job here. | |
| 212 1. The function is not inlined (too complicated?) | |
| 213 2. It seems to be reloading the crb and drb variables all the | |
| 214 time. | |
| 215 3. It doesn't seem to notice that the second half of these if's | |
| 216 are really a switch statement. | |
| 217 | |
| 218 So I (JV) conjecture | |
| 219 | |
| 220 #### It would really be worth it to arrange for this function to | |
| 221 be (almost) a single call to memcmp. */ | |
| 434 | 222 |
| 442 | 223 if (crb->xpos != drb->xpos) |
| 428 | 224 return 0; |
| 225 else if (crb->width != drb->width) | |
| 226 return 0; | |
| 227 else if (crb->cursor_type != drb->cursor_type) | |
| 228 return 0; | |
| 229 else if (crb->type != drb->type) | |
| 230 return 0; | |
| 231 else if (crb->type == RUNE_CHAR && | |
| 232 (crb->object.chr.ch != drb->object.chr.ch)) | |
| 233 return 0; | |
| 234 else if (crb->type == RUNE_HLINE && | |
| 235 (crb->object.hline.thickness != drb->object.hline.thickness || | |
| 236 crb->object.hline.yoffset != drb->object.hline.yoffset)) | |
| 237 return 0; | |
| 434 | 238 else if (crb->type == RUNE_DGLYPH && |
| 428 | 239 (!EQ (crb->object.dglyph.glyph, drb->object.dglyph.glyph) || |
| 240 !EQ (crb->object.dglyph.extent, drb->object.dglyph.extent) || | |
| 819 | 241 crb->object.dglyph.xoffset != drb->object.dglyph.xoffset || |
| 242 crb->object.dglyph.yoffset != drb->object.dglyph.yoffset || | |
| 4187 | 243 crb->object.dglyph.ascent != drb->object.dglyph.ascent || |
| 244 crb->object.dglyph.descent != drb->object.dglyph.descent)) | |
| 428 | 245 return 0; |
| 246 /* Only check dirtiness if we know something has changed. */ | |
| 247 else if (crb->type == RUNE_DGLYPH && | |
| 442 | 248 (XGLYPH_DIRTYP (crb->object.dglyph.glyph) || |
| 249 crb->findex != drb->findex)) | |
| 428 | 250 { |
| 442 | 251 /* We need some way of telling redisplay_output_layout () that the |
| 4187 | 252 only reason we are outputting it is because something has |
| 253 changed internally. That way we can optimize whether we need | |
| 254 to clear the layout first and also only output the components | |
| 255 that have changed. The image_instance dirty flag and | |
| 256 display_hash are no good to us because these will invariably | |
| 257 have been set anyway if the layout has changed. So it looks | |
| 258 like we need yet another change flag that we can set here and | |
| 259 then clear in redisplay_output_layout (). */ | |
| 442 | 260 Lisp_Object window, image; |
| 261 Lisp_Image_Instance* ii; | |
| 793 | 262 window = wrap_window (w); |
| 442 | 263 image = glyph_image_instance (crb->object.dglyph.glyph, |
| 793 | 264 window, ERROR_ME_DEBUG_WARN, 1); |
| 442 | 265 |
| 266 if (!IMAGE_INSTANCEP (image)) | |
| 267 return 0; | |
| 268 ii = XIMAGE_INSTANCE (image); | |
| 269 | |
| 270 if (TEXT_IMAGE_INSTANCEP (image) && | |
| 271 (crb->findex != drb->findex || | |
| 272 WINDOW_FACE_CACHEL_DIRTY (w, drb->findex))) | |
| 428 | 273 return 0; |
| 442 | 274 |
| 275 /* It is quite common for the two glyphs to be EQ since in many | |
| 276 cases they will actually be the same object. This does not | |
| 277 mean, however, that nothing has changed. We therefore need to | |
| 278 check the current hash of the glyph against the last recorded | |
| 279 display hash and the pending display items. See | |
| 280 update_subwindow (). */ | |
| 281 if (image_instance_changed (image) || | |
| 282 crb->findex != drb->findex || | |
| 283 WINDOW_FACE_CACHEL_DIRTY (w, drb->findex)) | |
| 284 { | |
| 638 | 285 /* Now we are going to re-output the glyph, but since |
| 442 | 286 this is for some internal reason not related to geometry |
| 287 changes, send a hint to the output routines that they can | |
| 288 take some short cuts. This is most useful for | |
| 289 layouts. This flag should get reset by the output | |
| 290 routines. | |
| 291 | |
| 292 #### It is possible for us to get here when the | |
| 293 face_cachel is dirty. I do not know what the implications | |
| 294 of this are.*/ | |
| 295 IMAGE_INSTANCE_OPTIMIZE_OUTPUT (ii) = 1; | |
| 296 return 0; | |
| 297 } | |
| 434 | 298 else |
| 428 | 299 return 1; |
| 300 } | |
| 442 | 301 /* We now do this last so that glyph checks can do their own thing |
| 302 for face changes. Face changes quite often happen when we are | |
| 303 trying to output something in the gutter, this would normally | |
| 304 lead to a lot of flashing. The indices can quite often be | |
| 305 different and yet the faces are the same, we do not want to | |
| 306 re-output in this instance. */ | |
| 307 else if (crb->findex != drb->findex || | |
| 308 WINDOW_FACE_CACHEL_DIRTY (w, drb->findex)) | |
| 309 return 0; | |
| 428 | 310 else |
| 311 return 1; | |
| 312 } | |
| 313 | |
| 851 | 314 #if 0 |
| 315 void | |
| 316 compare_runes_2 (struct window *w, struct rune *crb, struct rune *drb) | |
| 317 { | |
| 318 if (crb->type == DGLYPH) | |
| 319 { | |
| 320 if (!EQ (crb->object.dglyph.glyph, drb->object.dglyph.glyph) || | |
| 321 !EQ (crb->object.dglyph.extent, drb->object.dglyph.extent) || | |
| 322 crb->object.dglyph.xoffset != drb->object.dglyph.xoffset || | |
| 323 crb->object.dglyph.yoffset != drb->object.dglyph.yoffset || | |
| 324 crb->object.dglyph.ascent != drb->object.dglyph.ascent || | |
| 325 crb->object.dglyph.descent != drb->object.dglyph.descent) | |
| 326 return 0; | |
| 327 /* Only check dirtiness if we know something has changed. */ | |
| 328 else if (XGLYPH_DIRTYP (crb->object.dglyph.glyph) || | |
| 329 crb->findex != drb->findex) | |
| 330 { | |
| 331 /* We need some way of telling redisplay_output_layout () that the | |
| 332 only reason we are outputting it is because something has | |
| 333 changed internally. That way we can optimize whether we need | |
| 334 to clear the layout first and also only output the components | |
| 335 that have changed. The image_instance dirty flag and | |
| 336 display_hash are no good to us because these will invariably | |
| 337 have been set anyway if the layout has changed. So it looks | |
| 338 like we need yet another change flag that we can set here and | |
| 339 then clear in redisplay_output_layout (). */ | |
| 340 Lisp_Object window, image; | |
| 341 Lisp_Image_Instance* ii; | |
| 342 window = wrap_window (w); | |
| 343 image = glyph_image_instance (crb->object.dglyph.glyph, | |
| 344 window, crb->object.dglyph.matchspec, | |
| 345 ERROR_ME_DEBUG_WARN, 1); | |
| 4187 | 346 |
| 851 | 347 if (!IMAGE_INSTANCEP (image)) |
| 348 return 0; | |
| 349 ii = XIMAGE_INSTANCE (image); | |
| 4187 | 350 |
| 851 | 351 if (TEXT_IMAGE_INSTANCEP (image) && |
| 352 (crb->findex != drb->findex || | |
| 353 WINDOW_FACE_CACHEL_DIRTY (w, drb->findex))) | |
| 354 return 0; | |
| 4187 | 355 |
| 851 | 356 /* It is quite common for the two glyphs to be EQ since in many |
| 357 cases they will actually be the same object. This does not | |
| 358 mean, however, that nothing has changed. We therefore need to | |
| 359 check the current hash of the glyph against the last recorded | |
| 360 display hash and the pending display items. See | |
| 361 update_widget () ^^#### which function?. */ | |
| 362 if (image_instance_changed (image) || | |
| 363 crb->findex != drb->findex || | |
| 364 WINDOW_FACE_CACHEL_DIRTY (w, drb->findex)) | |
| 365 { | |
| 366 /* Now we are going to re-output the glyph, but since | |
| 367 this is for some internal reason not related to geometry | |
| 368 changes, send a hint to the output routines that they can | |
| 369 take some short cuts. This is most useful for | |
| 370 layouts. This flag should get reset by the output | |
| 371 routines. | |
| 4187 | 372 |
| 851 | 373 #### It is possible for us to get here when the |
| 374 face_cachel is dirty. I do not know what the implications | |
| 375 of this are.*/ | |
| 376 IMAGE_INSTANCE_OPTIMIZE_OUTPUT (ii) = 1; | |
| 377 return 0; | |
| 378 } | |
| 379 else | |
| 380 return 1; | |
| 381 } | |
| 382 else if (crb->findex != drb->findex || | |
| 383 WINDOW_FACE_CACHEL_DIRTY (w, drb->findex)) | |
| 384 return 0; | |
| 385 else | |
| 386 return 1; | |
| 387 } | |
| 388 else return !(memcmp (crb, drb, sizeof (*crb)) || | |
| 389 WINDOW_FACE_CACHEL_DIRTY (w, drb->findex)); | |
| 390 } | |
| 391 #endif | |
| 392 | |
| 393 | |
| 428 | 394 /***************************************************************************** |
| 395 get_next_display_block | |
| 396 | |
| 397 Return the next display starting at or overlapping START_POS. Return | |
| 398 the start of the next region in NEXT_START. | |
| 399 ****************************************************************************/ | |
| 400 int | |
| 401 get_next_display_block (layout_bounds bounds, display_block_dynarr *dba, | |
| 402 int start_pos, int *next_start) | |
| 403 { | |
| 404 int next_display_block = NO_BLOCK; | |
| 405 int priority = -1; | |
| 406 int block; | |
| 407 | |
| 408 /* If we don't find a display block covering or starting at | |
| 409 start_pos, then we return the starting point of the next display | |
| 410 block or the next division boundary, whichever is closer to | |
| 411 start_pos. */ | |
| 412 if (next_start) | |
| 413 { | |
| 414 if (start_pos >= bounds.left_out && start_pos < bounds.left_in) | |
| 415 *next_start = bounds.left_in; | |
| 416 else if (start_pos < bounds.left_white) | |
| 417 *next_start = bounds.left_white; | |
| 418 else if (start_pos < bounds.right_white) | |
| 419 *next_start = bounds.right_white; | |
| 420 else if (start_pos < bounds.right_in) | |
| 421 *next_start = bounds.right_in; | |
| 422 else if (start_pos <= bounds.right_out) | |
| 423 *next_start = bounds.right_out; | |
| 424 else | |
| 2500 | 425 ABORT (); |
| 428 | 426 } |
| 427 | |
| 428 for (block = 0; block < Dynarr_length (dba); block++) | |
| 429 { | |
| 430 struct display_block *db = Dynarr_atp (dba, block); | |
| 431 | |
| 432 if (db->start_pos <= start_pos && db->end_pos > start_pos) | |
| 433 { | |
| 434 if ((int) db->type > priority) | |
| 435 { | |
| 436 priority = db->type; | |
| 437 next_display_block = block; | |
| 438 if (next_start) | |
| 439 *next_start = db->end_pos; | |
| 440 } | |
| 441 } | |
| 442 else if (next_start && db->start_pos > start_pos) | |
| 443 { | |
| 444 if (db->start_pos < *next_start) | |
| 445 *next_start = db->start_pos; | |
| 446 } | |
| 447 } | |
| 448 | |
| 449 return next_display_block; | |
| 450 } | |
| 451 | |
| 452 /***************************************************************************** | |
| 453 get_cursor_size_and_location | |
| 454 | |
| 455 Return the information defining the pixel location of the cursor. | |
| 456 ****************************************************************************/ | |
| 457 static void | |
| 458 get_cursor_size_and_location (struct window *w, struct display_block *db, | |
| 459 int cursor_location, | |
| 460 int *cursor_start, int *cursor_width, | |
| 461 int *cursor_height) | |
| 462 { | |
| 463 struct rune *rb; | |
| 464 Lisp_Object window; | |
| 465 int defheight, defwidth; | |
| 466 | |
| 467 if (Dynarr_length (db->runes) <= cursor_location) | |
| 2500 | 468 ABORT (); |
| 428 | 469 |
| 793 | 470 window = wrap_window (w); |
| 428 | 471 |
| 472 rb = Dynarr_atp (db->runes, cursor_location); | |
| 473 *cursor_start = rb->xpos; | |
| 474 | |
| 475 default_face_height_and_width (window, &defheight, &defwidth); | |
| 476 *cursor_height = defheight; | |
| 477 | |
| 478 if (rb->type == RUNE_BLANK) | |
| 479 *cursor_width = defwidth; | |
| 480 else | |
| 481 *cursor_width = rb->width; | |
| 482 } | |
| 483 | |
| 484 /***************************************************************************** | |
| 485 compare_display_blocks | |
| 486 | |
| 487 Given two display blocks, output only those areas where they differ. | |
| 488 ****************************************************************************/ | |
| 489 static int | |
| 490 compare_display_blocks (struct window *w, struct display_line *cdl, | |
| 491 struct display_line *ddl, int c_block, int d_block, | |
| 492 int start_pixpos, int cursor_start, int cursor_width, | |
| 493 int cursor_height) | |
| 494 { | |
| 495 struct frame *f = XFRAME (w->frame); | |
| 496 struct display_block *cdb, *ddb; | |
| 497 int start_pos; | |
| 498 int stop_pos; | |
| 499 int force = 0; | |
| 2286 | 500 #if 0 |
| 428 | 501 int block_end; |
| 2286 | 502 #endif |
| 428 | 503 |
| 504 cdb = Dynarr_atp (cdl->display_blocks, c_block); | |
| 505 ddb = Dynarr_atp (ddl->display_blocks, d_block); | |
| 506 | |
| 507 assert (cdb->type == ddb->type); | |
| 508 | |
| 509 start_pos = -1; | |
| 510 stop_pos = min (Dynarr_length (cdb->runes), Dynarr_length (ddb->runes)); | |
| 511 | |
| 2286 | 512 #if 0 |
| 428 | 513 block_end = |
| 514 (!Dynarr_length (ddb->runes) | |
| 515 ? 0 | |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4207
diff
changeset
|
516 : (Dynarr_lastp (ddb->runes)->xpos + |
|
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4207
diff
changeset
|
517 Dynarr_lastp (ddb->runes)->width)); |
| 2286 | 518 #endif |
| 428 | 519 |
| 520 /* If the new block type is not text and the cursor status is | |
| 521 changing and it overlaps the position of this block then force a | |
| 522 full redraw of the block in order to make sure that the cursor is | |
| 523 updated properly. */ | |
| 524 if (ddb->type != TEXT | |
| 525 #if 0 | |
| 526 /* I'm not sure exactly what this code wants to do, but it's | |
| 527 * not right--it doesn't update when cursor_elt changes from, e.g., | |
| 528 * 0 to 8, and the new or old cursor loc overlaps this block. | |
| 529 * I've replaced it with the more conservative test below. | |
| 530 * -dkindred@cs.cmu.edu 23-Mar-1997 */ | |
| 531 && ((cdl->cursor_elt == -1 && ddl->cursor_elt != -1) | |
| 532 || (cdl->cursor_elt != -1 && ddl->cursor_elt == -1)) | |
| 533 && (ddl->cursor_elt == -1 || | |
| 534 (cursor_start | |
| 535 && cursor_width | |
| 536 && (cursor_start + cursor_width) >= start_pixpos | |
| 537 && cursor_start <= block_end)) | |
| 538 #else | |
| 539 && (cdl->cursor_elt != ddl->cursor_elt) | |
| 540 #endif | |
| 541 ) | |
| 542 force = 1; | |
| 543 | |
| 544 if (f->windows_structure_changed || | |
| 545 /* #### Why is this so? We have face cachels so that we don't | |
| 4187 | 546 have to recalculate all the display blocks when faces |
| 547 change. I have fixed this for glyphs and am inclined to think | |
| 548 that faces should "Just Work", but I'm not feeling brave | |
| 549 today. Maybe its because the face cachels represent merged | |
| 550 faces rather than simply instantiations in a particular | |
| 551 domain. */ | |
| 428 | 552 f->faces_changed || |
| 553 cdl->ypos != ddl->ypos || | |
| 554 cdl->ascent != ddl->ascent || | |
| 555 cdl->descent != ddl->descent || | |
| 556 cdl->clip != ddl->clip || | |
| 557 force) | |
| 558 { | |
| 559 start_pos = 0; | |
| 560 force = 1; | |
| 561 } | |
| 562 else | |
| 563 { | |
| 564 int elt = 0; | |
| 565 | |
| 566 while (start_pos < 0 && elt < stop_pos) | |
| 567 { | |
| 568 if (!compare_runes (w, Dynarr_atp (cdb->runes, elt), | |
| 569 Dynarr_atp (ddb->runes, elt))) | |
| 570 { | |
| 571 start_pos = elt; | |
| 572 } | |
| 573 else | |
| 574 { | |
| 575 elt++; | |
| 576 } | |
| 577 } | |
| 578 | |
| 579 /* If nothing has changed in the area where the blocks overlap, but | |
| 580 there are new blocks in the desired block, then adjust the start | |
| 581 point accordingly. */ | |
| 582 if (elt == stop_pos && stop_pos < Dynarr_length (ddb->runes)) | |
| 583 start_pos = stop_pos; | |
| 584 } | |
| 585 | |
| 586 if (start_pos >= 0) | |
| 587 { | |
| 588 if ((Dynarr_length (ddb->runes) != Dynarr_length (cdb->runes)) | |
| 589 || force) | |
| 590 { | |
| 591 stop_pos = Dynarr_length (ddb->runes); | |
| 592 } | |
| 593 else | |
| 594 { | |
| 595 /* If the lines have the same number of runes and we are not | |
| 596 forcing a full redraw because the display line has | |
| 597 changed position then we try and optimize how much of the | |
| 598 line we actually redraw by scanning backwards from the | |
| 599 end for the first changed rune. This optimization is | |
| 600 almost always triggered by face changes. */ | |
| 601 | |
| 602 int elt = Dynarr_length (ddb->runes) - 1; | |
| 603 | |
| 604 while (elt > start_pos) | |
| 605 { | |
| 606 if (!compare_runes (w, Dynarr_atp (cdb->runes, elt), | |
| 607 Dynarr_atp (ddb->runes, elt))) | |
| 608 break; | |
| 609 else | |
| 610 elt--; | |
| 611 } | |
| 612 stop_pos = elt + 1; | |
| 613 } | |
| 614 | |
| 615 redisplay_output_display_block (w, ddl, d_block, start_pos, | |
| 616 stop_pos, start_pixpos, | |
| 617 cursor_start, cursor_width, | |
| 618 cursor_height); | |
| 619 return 1; | |
| 620 } | |
| 621 | |
| 622 return 0; | |
| 623 } | |
| 624 | |
| 625 /***************************************************************************** | |
| 626 clear_left_border | |
| 627 | |
| 628 Clear the lefthand outside border. | |
| 629 ****************************************************************************/ | |
| 630 static void | |
| 631 clear_left_border (struct window *w, int y, int height) | |
| 632 { | |
| 633 struct frame *f = XFRAME (w->frame); | |
| 793 | 634 Lisp_Object window = wrap_window (w); |
| 428 | 635 |
| 636 redisplay_clear_region (window, DEFAULT_INDEX, | |
| 637 FRAME_LEFT_BORDER_START (f), y, | |
| 638 FRAME_BORDER_WIDTH (f), height); | |
| 639 } | |
| 640 | |
| 641 /***************************************************************************** | |
| 642 clear_right_border | |
| 643 | |
| 644 Clear the righthand outside border. | |
| 645 ****************************************************************************/ | |
| 646 static void | |
| 647 clear_right_border (struct window *w, int y, int height) | |
| 648 { | |
| 649 struct frame *f = XFRAME (w->frame); | |
| 793 | 650 Lisp_Object window = wrap_window (w); |
| 428 | 651 |
| 652 redisplay_clear_region (window, DEFAULT_INDEX, | |
| 653 FRAME_RIGHT_BORDER_START (f), | |
| 654 y, FRAME_BORDER_WIDTH (f), height); | |
| 655 } | |
| 656 | |
| 657 /***************************************************************************** | |
| 658 output_display_line | |
| 659 | |
| 660 Ensure that the contents of the given display line is correct | |
| 661 on-screen. The force_ parameters are used by redisplay_move_cursor | |
| 662 to correctly update cursor locations and only cursor locations. | |
| 663 ****************************************************************************/ | |
| 664 void | |
| 665 output_display_line (struct window *w, display_line_dynarr *cdla, | |
| 666 display_line_dynarr *ddla, int line, int force_start, | |
| 667 int force_end) | |
| 668 | |
| 669 { | |
| 670 struct frame *f = XFRAME (w->frame); | |
| 671 struct buffer *b = XBUFFER (w->buffer); | |
| 672 struct buffer *old_b = window_display_buffer (w); | |
| 673 struct display_line *cdl, *ddl; | |
| 674 display_block_dynarr *cdba, *ddba; | |
| 675 int start_pixpos, end_pixpos; | |
| 676 int cursor_start, cursor_width, cursor_height; | |
| 677 | |
| 678 int force = (force_start >= 0 || force_end >= 0); | |
| 679 int clear_border = 0; | |
| 680 int must_sync = 0; | |
| 681 | |
| 682 if (cdla && line < Dynarr_length (cdla)) | |
| 683 { | |
| 684 cdl = Dynarr_atp (cdla, line); | |
| 685 cdba = cdl->display_blocks; | |
| 686 } | |
| 687 else | |
| 688 { | |
| 689 cdl = NULL; | |
| 690 cdba = NULL; | |
| 691 } | |
| 692 | |
|
4844
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4207
diff
changeset
|
693 /* The following will assert line < Dynarr_length (ddla) */ |
|
91b3d00e717f
Various cleanups for Dynarr code, from Unicode-internal ws
Ben Wing <ben@xemacs.org>
parents:
4207
diff
changeset
|
694 ddl = Dynarr_atp (ddla, line); |
| 428 | 695 ddba = ddl->display_blocks; |
| 696 | |
| 697 if (force_start >= 0 && force_start >= ddl->bounds.left_out) | |
| 698 start_pixpos = force_start; | |
| 699 else | |
| 700 start_pixpos = ddl->bounds.left_out; | |
| 701 | |
| 702 if (force_end >= 0 && force_end < ddl->bounds.right_out) | |
| 703 end_pixpos = force_end; | |
| 704 else | |
| 705 end_pixpos = ddl->bounds.right_out; | |
| 706 | |
| 707 /* Get the cursor parameters. */ | |
| 708 if (ddl->cursor_elt != -1) | |
| 709 { | |
| 710 struct display_block *db; | |
| 711 | |
| 712 /* If the lines cursor parameter is not -1 then it indicates | |
| 4187 | 713 which rune in the TEXT block contains the cursor. This means |
| 714 that there must be at least one display block. The TEXT | |
| 715 block, if present, must always be the first display block. */ | |
| 428 | 716 assert (Dynarr_length (ddba) != 0); |
| 717 | |
| 718 db = Dynarr_atp (ddba, 0); | |
| 719 assert (db->type == TEXT); | |
| 720 | |
| 721 get_cursor_size_and_location (w, db, ddl->cursor_elt, &cursor_start, | |
| 722 &cursor_width, &cursor_height); | |
| 723 } | |
| 724 else | |
| 725 { | |
| 726 cursor_start = cursor_width = cursor_height = 0; | |
| 727 } | |
| 728 | |
| 729 /* The modeline should only have a single block and it had better be | |
| 730 a TEXT block. */ | |
| 731 if (ddl->modeline) | |
| 732 { | |
| 733 /* The shadow thickness check is necessary if only the sign of | |
| 4187 | 734 the size changed. */ |
| 428 | 735 if (cdba && !w->shadow_thickness_changed) |
| 736 { | |
| 737 must_sync |= compare_display_blocks (w, cdl, ddl, 0, 0, | |
| 738 start_pixpos, 0, 0, 0); | |
| 739 } | |
| 740 else | |
| 741 { | |
| 742 redisplay_output_display_block (w, ddl, 0, 0, -1, start_pixpos, | |
| 743 0, 0, 0); | |
| 744 must_sync = 1; | |
| 745 } | |
| 746 | |
| 747 if (must_sync) | |
| 748 clear_border = 1; | |
| 749 } | |
| 750 | |
| 751 while (!ddl->modeline && start_pixpos < end_pixpos) | |
| 752 { | |
| 753 int block; | |
| 754 int next_start_pixpos; | |
| 755 | |
| 756 block = get_next_display_block (ddl->bounds, ddba, start_pixpos, | |
| 757 &next_start_pixpos); | |
| 758 | |
| 759 /* If we didn't find a block then we should blank the area | |
| 4187 | 760 between start_pos and next_start if necessary. */ |
| 428 | 761 if (block == NO_BLOCK) |
| 762 { | |
| 763 /* We only erase those areas which were actually previously | |
| 4187 | 764 covered by a display block unless the window structure |
| 765 changed. In that case we clear all areas since the current | |
| 766 structures may actually represent a different buffer. */ | |
| 428 | 767 while (start_pixpos < next_start_pixpos) |
| 768 { | |
| 769 int block_end; | |
| 770 int old_block; | |
| 771 | |
| 772 if (cdba) | |
| 773 old_block = get_next_display_block (ddl->bounds, cdba, | |
| 774 start_pixpos, &block_end); | |
| 775 else | |
| 776 { | |
| 777 old_block = NO_BLOCK; | |
| 778 block_end = next_start_pixpos; | |
| 779 } | |
| 780 | |
| 781 if (!cdba || old_block != NO_BLOCK || b != old_b || | |
| 782 f->windows_structure_changed || | |
| 783 f->faces_changed || | |
| 784 force || | |
| 785 (cdl && (cdl->ypos != ddl->ypos || | |
| 786 cdl->ascent != ddl->ascent || | |
| 787 cdl->descent != ddl->descent || | |
| 788 cdl->top_clip != ddl->top_clip || | |
| 789 cdl->clip != ddl->clip))) | |
| 790 { | |
| 791 int x, y, width, height; | |
| 792 face_index findex; | |
| 793 | |
| 794 must_sync = 1; | |
| 795 x = start_pixpos; | |
| 796 y = DISPLAY_LINE_YPOS (ddl); | |
| 797 width = min (next_start_pixpos, block_end) - x; | |
| 798 height = DISPLAY_LINE_HEIGHT (ddl); | |
| 799 | |
| 800 if (x < ddl->bounds.left_in) | |
| 801 { | |
| 4187 | 802 findex = (ddl->left_margin_findex > DEFAULT_INDEX) ? |
| 434 | 803 ddl->left_margin_findex |
| 428 | 804 : get_builtin_face_cache_index (w, Vleft_margin_face); |
| 805 } | |
| 806 else if (x < ddl->bounds.right_in) | |
| 807 { | |
| 4187 | 808 findex = (ddl->default_findex >= DEFAULT_INDEX) ? |
| 809 ddl->default_findex | |
| 810 : DEFAULT_INDEX; | |
| 428 | 811 } |
| 812 else if (x < ddl->bounds.right_out) | |
| 813 { | |
| 4187 | 814 findex = (ddl->right_margin_findex > DEFAULT_INDEX) ? |
| 434 | 815 ddl->right_margin_findex |
| 428 | 816 : get_builtin_face_cache_index (w, Vright_margin_face); |
| 817 } | |
| 818 else | |
| 819 findex = (face_index) -1; | |
| 820 | |
| 821 if (findex != (face_index) -1) | |
| 822 { | |
| 793 | 823 Lisp_Object window = wrap_window (w); |
| 428 | 824 |
| 825 | |
| 826 /* Clear the empty area. */ | |
| 827 redisplay_clear_region (window, findex, x, y, width, height); | |
| 828 | |
| 829 /* Mark that we should clear the border. This is | |
| 830 necessary because italic fonts may leave | |
| 831 droppings in the border. */ | |
| 832 clear_border = 1; | |
| 833 } | |
| 834 } | |
| 835 | |
| 836 start_pixpos = min (next_start_pixpos, block_end); | |
| 837 } | |
| 838 } | |
| 839 else | |
| 840 { | |
| 841 struct display_block *cdb, *ddb; | |
| 842 int block_end; | |
| 843 int old_block; | |
| 844 | |
| 845 if (cdba) | |
| 846 old_block = get_next_display_block (ddl->bounds, cdba, | |
| 847 start_pixpos, &block_end); | |
| 848 else | |
| 849 old_block = NO_BLOCK; | |
| 850 | |
| 851 ddb = Dynarr_atp (ddba, block); | |
| 852 cdb = (old_block != NO_BLOCK ? Dynarr_atp (cdba, old_block) : 0); | |
| 853 | |
| 854 /* If there was formerly no block over the current | |
| 855 region or if it was a block of a different type, then | |
| 856 output the entire ddb. Otherwise, compare cdb and | |
| 857 ddb and output only the changed region. */ | |
| 434 | 858 if (!force && cdb && ddb->type == cdb->type |
| 428 | 859 /* If there was no buffer being display before the |
| 4187 | 860 compare anyway as we might be outputting a gutter. */ |
| 434 | 861 && |
| 428 | 862 (b == old_b || !old_b)) |
| 863 { | |
| 864 must_sync |= compare_display_blocks (w, cdl, ddl, old_block, | |
| 865 block, start_pixpos, | |
| 866 cursor_start, cursor_width, | |
| 867 cursor_height); | |
| 868 } | |
| 869 else | |
| 870 { | |
| 871 int elt; | |
| 872 int first_elt = 0; | |
| 873 int last_elt = -1; | |
| 874 | |
| 875 for (elt = 0; elt < Dynarr_length (ddb->runes); elt++) | |
| 876 { | |
| 877 struct rune *rb = Dynarr_atp (ddb->runes, elt); | |
| 878 | |
| 879 if (start_pixpos >= rb->xpos | |
| 880 && start_pixpos < rb->xpos + rb->width) | |
| 881 first_elt = elt; | |
| 882 | |
| 883 if (end_pixpos > rb->xpos | |
| 884 && end_pixpos <= rb->xpos + rb->width) | |
| 885 { | |
| 886 last_elt = elt + 1; | |
| 887 if (last_elt > Dynarr_length (ddb->runes)) | |
| 888 last_elt = Dynarr_length (ddb->runes); | |
| 889 break; | |
| 890 } | |
| 891 } | |
| 892 | |
| 893 must_sync = 1; | |
| 894 redisplay_output_display_block (w, ddl, block, first_elt, | |
| 895 last_elt, | |
| 896 start_pixpos, | |
| 897 cursor_start, cursor_width, | |
| 898 cursor_height); | |
| 899 } | |
| 434 | 900 |
| 428 | 901 start_pixpos = next_start_pixpos; |
| 902 } | |
| 903 } | |
| 904 | |
| 905 /* Clear the internal border if we are next to it and the window | |
| 906 structure or frame size has changed or if something caused | |
| 907 clear_border to be tripped. */ | |
| 908 /* #### Doing this on f->clear sucks but is necessary because of | |
| 909 window-local background values. */ | |
| 910 if (f->windows_structure_changed || f->faces_changed || clear_border | |
| 911 || f->clear) | |
| 912 { | |
| 913 int y = DISPLAY_LINE_YPOS (ddl); | |
| 914 int height = DISPLAY_LINE_HEIGHT (ddl); | |
| 915 | |
| 916 /* If we are in the gutter then we musn't clear the borders. */ | |
| 917 if (y >= WINDOW_TEXT_TOP (w) && (y + height) <= WINDOW_TEXT_BOTTOM (w)) | |
| 918 { | |
| 919 if (ddl->modeline) | |
| 920 { | |
| 921 y -= MODELINE_SHADOW_THICKNESS (w); | |
| 922 height += (2 * MODELINE_SHADOW_THICKNESS (w)); | |
| 923 } | |
| 434 | 924 |
| 428 | 925 if (window_is_leftmost (w)) |
| 926 clear_left_border (w, y, height); | |
| 927 if (window_is_rightmost (w)) | |
| 928 clear_right_border (w, y, height); | |
| 929 } | |
| 930 } | |
| 931 | |
| 932 if (cdla) | |
| 933 sync_display_line_structs (w, line, must_sync, cdla, ddla); | |
| 934 } | |
| 935 | |
| 936 /***************************************************************************** | |
| 937 redisplay_move_cursor | |
| 938 | |
| 939 For the given window W, move the cursor to NEW_POINT. Returns a | |
| 940 boolean indicating success or failure. | |
| 941 ****************************************************************************/ | |
| 942 | |
| 826 | 943 #define ADJ_CHARPOS (rb->charpos + dl->offset) |
| 428 | 944 #define ADJ_ENDPOS (rb->endpos + dl->offset) |
| 945 | |
| 946 int | |
| 665 | 947 redisplay_move_cursor (struct window *w, Charbpos new_point, int no_output_end) |
| 428 | 948 { |
| 949 struct frame *f = XFRAME (w->frame); | |
| 950 struct device *d = XDEVICE (f->device); | |
| 951 | |
| 952 display_line_dynarr *cla = window_display_lines (w, CURRENT_DISP); | |
| 953 struct display_line *dl; | |
| 954 struct display_block *db; | |
| 955 struct rune *rb; | |
| 956 int x = w->last_point_x[CURRENT_DISP]; | |
| 957 int y = w->last_point_y[CURRENT_DISP]; | |
| 958 | |
| 959 /* | |
| 960 * Bail if cursor_in_echo_area is non-zero and we're fiddling with | |
| 961 * the cursor in a non-active minibuffer window, since that is a | |
| 962 * special case that is handled elsewhere and this function need | |
| 963 * not handle it. Return 1 so the caller will assume we | |
| 964 * succeeded. | |
| 965 */ | |
| 966 if (cursor_in_echo_area && MINI_WINDOW_P (w) && | |
| 967 w != XWINDOW (FRAME_SELECTED_WINDOW (f))) | |
| 968 return 1; | |
| 969 | |
| 970 if (y < 0 || y >= Dynarr_length (cla)) | |
| 971 return 0; | |
| 972 | |
| 973 dl = Dynarr_atp (cla, y); | |
| 974 db = get_display_block_from_line (dl, TEXT); | |
| 975 | |
| 976 if (x < 0 || x >= Dynarr_length (db->runes)) | |
| 977 return 0; | |
| 978 | |
| 979 rb = Dynarr_atp (db->runes, x); | |
| 980 | |
| 981 if (rb->cursor_type == CURSOR_OFF) | |
| 982 return 0; | |
| 826 | 983 else if (ADJ_CHARPOS == new_point |
| 984 || (ADJ_ENDPOS && (new_point >= ADJ_CHARPOS) | |
| 428 | 985 && (new_point <= ADJ_ENDPOS))) |
| 986 { | |
| 987 w->last_point_x[CURRENT_DISP] = x; | |
| 988 w->last_point_y[CURRENT_DISP] = y; | |
| 826 | 989 Fset_marker (w->last_point[CURRENT_DISP], make_int (ADJ_CHARPOS), |
| 428 | 990 w->buffer); |
| 991 dl->cursor_elt = x; | |
| 992 return 1; | |
| 993 } | |
| 994 else | |
| 995 { | |
| 442 | 996 { |
| 997 MAYBE_DEVMETH (d, frame_output_begin, (f)); | |
| 998 MAYBE_DEVMETH (d, window_output_begin, (w)); | |
| 999 } | |
| 1000 rb->cursor_type = CURSOR_OFF; | |
| 428 | 1001 dl->cursor_elt = -1; |
| 1002 output_display_line (w, 0, cla, y, rb->xpos, rb->xpos + rb->width); | |
| 1003 } | |
| 1004 | |
| 1005 w->last_point_x[CURRENT_DISP] = -1; | |
| 1006 w->last_point_y[CURRENT_DISP] = -1; | |
| 1007 Fset_marker (w->last_point[CURRENT_DISP], Qnil, w->buffer); | |
| 1008 | |
| 1009 /* If this isn't the selected frame, then erasing the old cursor is | |
| 1010 all we actually had to do. */ | |
| 1011 if (w != XWINDOW (FRAME_SELECTED_WINDOW (device_selected_frame (d)))) | |
| 1012 { | |
| 1013 if (!no_output_end) | |
| 442 | 1014 { |
| 1015 MAYBE_DEVMETH (d, window_output_end, (w)); | |
| 1016 MAYBE_DEVMETH (d, frame_output_end, (f)); | |
| 1017 } | |
| 428 | 1018 |
| 1019 return 1; | |
| 1020 } | |
| 1021 | |
| 1022 /* This should only occur in the minibuffer. */ | |
| 1023 if (new_point == 0) | |
| 1024 { | |
| 1025 w->last_point_x[CURRENT_DISP] = 0; | |
| 1026 w->last_point_y[CURRENT_DISP] = y; | |
| 1027 Fset_marker (w->last_point[CURRENT_DISP], Qzero, w->buffer); | |
| 1028 | |
| 1029 rb = Dynarr_atp (db->runes, 0); | |
| 1030 rb->cursor_type = CURSOR_ON; | |
| 1031 dl->cursor_elt = 0; | |
| 1032 | |
| 1033 output_display_line (w, 0, cla, y, rb->xpos, rb->xpos + rb->width); | |
| 1034 | |
| 1035 if (!no_output_end) | |
| 442 | 1036 { |
| 1037 MAYBE_DEVMETH (d, window_output_end, (w)); | |
| 1038 MAYBE_DEVMETH (d, frame_output_end, (f)); | |
| 1039 } | |
| 428 | 1040 return 1; |
| 1041 } | |
| 1042 else | |
| 1043 { | |
| 1044 int cur_rb = 0; | |
| 1045 int first = 0; | |
| 1046 int cur_dl, up; | |
| 1047 | |
| 826 | 1048 if (ADJ_CHARPOS < new_point) |
| 428 | 1049 { |
| 1050 up = 1; | |
| 1051 cur_rb = x + 1; | |
| 1052 cur_dl = y; | |
| 1053 } | |
| 665 | 1054 else /* (rb->charbpos + dl->offset) > new_point */ |
| 428 | 1055 { |
| 1056 up = 0; | |
| 1057 | |
| 1058 if (!x) | |
| 1059 { | |
| 1060 cur_dl = y - 1; | |
| 1061 first = 0; | |
| 1062 } | |
| 1063 else | |
| 1064 { | |
| 1065 cur_rb = x - 1; | |
| 1066 cur_dl = y; | |
| 1067 first = 1; | |
| 1068 } | |
| 1069 } | |
| 1070 | |
| 434 | 1071 while (up ? (cur_dl < Dynarr_length (cla)) : (cur_dl >= 0)) |
| 428 | 1072 { |
| 1073 dl = Dynarr_atp (cla, cur_dl); | |
| 1074 db = get_display_block_from_line (dl, TEXT); | |
| 1075 | |
| 1076 if (!up && !first) | |
| 1077 cur_rb = Dynarr_length (db->runes) - 1; | |
| 1078 | |
| 1079 while ((!scroll_on_clipped_lines || !dl->clip) && | |
| 1080 (up ? (cur_rb < Dynarr_length (db->runes)) : (cur_rb >= 0))) | |
| 1081 { | |
| 1082 rb = Dynarr_atp (db->runes, cur_rb); | |
| 1083 | |
| 1084 if (rb->cursor_type != IGNORE_CURSOR | |
| 1085 && rb->cursor_type != NO_CURSOR && | |
| 826 | 1086 (ADJ_CHARPOS == new_point |
| 1087 || (ADJ_ENDPOS && (new_point >= ADJ_CHARPOS) | |
| 1088 && (new_point <= ADJ_CHARPOS)))) | |
| 428 | 1089 { |
| 1090 rb->cursor_type = CURSOR_ON; | |
| 1091 dl->cursor_elt = cur_rb; | |
| 1092 | |
| 1093 | |
| 1094 output_display_line (w, 0, cla, cur_dl, rb->xpos, | |
| 1095 rb->xpos + rb->width); | |
| 1096 | |
| 1097 w->last_point_x[CURRENT_DISP] = cur_rb; | |
| 1098 w->last_point_y[CURRENT_DISP] = cur_dl; | |
| 1099 Fset_marker (w->last_point[CURRENT_DISP], | |
| 826 | 1100 make_int (ADJ_CHARPOS), w->buffer); |
| 428 | 1101 |
| 1102 if (!no_output_end) | |
| 442 | 1103 { |
| 1104 MAYBE_DEVMETH (d, window_output_end, (w)); | |
| 1105 MAYBE_DEVMETH (d, frame_output_end, (f)); | |
| 1106 } | |
| 428 | 1107 return 1; |
| 1108 } | |
| 1109 | |
| 1110 (up ? cur_rb++ : cur_rb--); | |
| 1111 } | |
| 1112 | |
| 1113 (up ? (cur_rb = 0) : (first = 0)); | |
| 1114 (up ? cur_dl++ : cur_dl--); | |
| 1115 } | |
| 1116 } | |
| 1117 | |
| 1118 if (!no_output_end) | |
| 442 | 1119 { |
| 1120 MAYBE_DEVMETH (d, window_output_end, (w)); | |
| 1121 MAYBE_DEVMETH (d, frame_output_end, (f)); | |
| 1122 } | |
| 428 | 1123 return 0; |
| 1124 } | |
| 826 | 1125 #undef ADJ_CHARPOS |
| 428 | 1126 #undef ADJ_ENDPOS |
| 1127 | |
| 1128 /***************************************************************************** | |
| 1129 redraw_cursor_in_window | |
| 1130 | |
| 1131 For the given window W, redraw the cursor if it is contained within | |
| 1132 the window. | |
| 1133 ****************************************************************************/ | |
| 1134 static void | |
| 1135 redraw_cursor_in_window (struct window *w, int run_end_begin_meths) | |
| 1136 { | |
| 1137 struct frame *f = XFRAME (w->frame); | |
| 1138 struct device *d = XDEVICE (f->device); | |
| 1139 | |
| 1140 display_line_dynarr *dla = window_display_lines (w, CURRENT_DISP); | |
| 1141 struct display_line *dl; | |
| 1142 struct display_block *db; | |
| 1143 struct rune *rb; | |
| 1144 | |
| 1145 int x = w->last_point_x[CURRENT_DISP]; | |
| 1146 int y = w->last_point_y[CURRENT_DISP]; | |
| 1147 | |
| 1148 if (cursor_in_echo_area && MINI_WINDOW_P (w) && | |
| 1149 !echo_area_active (f) && minibuf_level == 0) | |
| 1150 { | |
| 1151 MAYBE_DEVMETH (d, set_final_cursor_coords, (f, w->pixel_top, 0)); | |
| 1152 } | |
| 1153 | |
| 1154 if (y < 0 || y >= Dynarr_length (dla)) | |
| 1155 return; | |
| 1156 | |
| 1157 if (MINI_WINDOW_P (w) && f != device_selected_frame (d) && | |
| 1158 !is_surrogate_for_selected_frame (f)) | |
| 1159 return; | |
| 1160 | |
| 1161 dl = Dynarr_atp (dla, y); | |
| 1162 db = get_display_block_from_line (dl, TEXT); | |
| 1163 | |
| 1164 if (x < 0 || x >= Dynarr_length (db->runes)) | |
| 1165 return; | |
| 1166 | |
| 1167 rb = Dynarr_atp (db->runes, x); | |
| 1168 | |
| 1169 /* Don't call the output routine if the block isn't actually the | |
| 1170 cursor. */ | |
| 1171 if (rb->cursor_type == CURSOR_ON) | |
| 1172 { | |
| 1173 MAYBE_DEVMETH (d, set_final_cursor_coords, | |
| 1174 (f, dl->ypos - 1, rb->xpos)); | |
| 1175 | |
| 1176 if (run_end_begin_meths) | |
| 442 | 1177 { |
| 1178 MAYBE_DEVMETH (d, frame_output_begin, (f)); | |
| 1179 MAYBE_DEVMETH (d, window_output_begin, (w)); | |
| 1180 } | |
| 428 | 1181 |
| 1182 output_display_line (w, 0, dla, y, rb->xpos, rb->xpos + rb->width); | |
| 1183 | |
| 1184 if (run_end_begin_meths) | |
| 442 | 1185 { |
| 1186 MAYBE_DEVMETH (d, window_output_end, (w)); | |
| 1187 MAYBE_DEVMETH (d, frame_output_end, (f)); | |
| 1188 } | |
| 428 | 1189 } |
| 1190 } | |
| 1191 | |
| 1192 /***************************************************************************** | |
| 1193 redisplay_redraw_cursor | |
| 1194 | |
| 1195 For the given frame F, redraw the cursor on the selected window. | |
| 1196 This is used to update the cursor after focus changes. | |
| 1197 ****************************************************************************/ | |
| 1198 void | |
| 1199 redisplay_redraw_cursor (struct frame *f, int run_end_begin_meths) | |
| 1200 { | |
| 1201 Lisp_Object window; | |
| 1202 | |
| 1203 if (!cursor_in_echo_area) | |
| 1204 window = FRAME_SELECTED_WINDOW (f); | |
| 1205 else if (FRAME_HAS_MINIBUF_P (f)) | |
| 1206 window = FRAME_MINIBUF_WINDOW (f); | |
| 1207 else | |
| 1208 return; | |
| 1209 | |
| 1210 redraw_cursor_in_window (XWINDOW (window), run_end_begin_meths); | |
| 1211 } | |
| 1212 | |
| 1213 /**************************************************************************** | |
| 1214 redisplay_output_display_block | |
| 1215 | |
| 1216 Given a display line, a block number for that start line, output all | |
| 1217 runes between start and end in the specified display block. | |
| 1218 ****************************************************************************/ | |
| 1219 static void | |
| 1220 redisplay_output_display_block (struct window *w, struct display_line *dl, int block, | |
| 1221 int start, int end, int start_pixpos, int cursor_start, | |
| 1222 int cursor_width, int cursor_height) | |
| 1223 { | |
| 1224 struct frame *f = XFRAME (w->frame); | |
| 1225 struct device *d = XDEVICE (f->device); | |
| 442 | 1226 /* Temporarily disabled until generalization is done. */ |
| 1227 #if 0 | |
| 428 | 1228 struct display_block *db = Dynarr_atp (dl->display_blocks, block); |
| 1229 rune_dynarr *rba = db->runes; | |
| 1230 struct rune *rb; | |
| 1231 int xpos, width; | |
| 1232 rb = Dynarr_atp (rba, start); | |
| 1233 | |
| 1234 if (!rb) | |
| 1235 /* Nothing to do so don't do anything. */ | |
| 1236 return; | |
| 1237 | |
| 1238 xpos = max (start_pixpos, rb->xpos); | |
| 1239 | |
| 1240 if (end < 0) | |
| 1241 end = Dynarr_length (rba); | |
| 1242 | |
| 1243 rb = Dynarr_atp (rba, end - 1); | |
| 1244 width = rb->xpos + rb->width - xpos; | |
| 442 | 1245 #endif |
| 428 | 1246 /* now actually output the block. */ |
| 1247 DEVMETH (d, output_display_block, (w, dl, block, start, | |
| 1248 end, start_pixpos, | |
| 1249 cursor_start, cursor_width, | |
| 1250 cursor_height)); | |
| 1251 } | |
| 1252 | |
| 1253 /**************************************************************************** | |
| 1254 redisplay_unmap_subwindows | |
| 1255 | |
| 1256 Remove subwindows from the area in the box defined by the given | |
| 1257 parameters. | |
| 1258 ****************************************************************************/ | |
| 448 | 1259 static void |
| 1260 redisplay_unmap_subwindows (struct frame* f, int x, int y, int width, int height, | |
| 1261 Lisp_Object ignored_window) | |
| 428 | 1262 { |
| 442 | 1263 Lisp_Object rest; |
| 428 | 1264 |
| 442 | 1265 LIST_LOOP (rest, XWEAK_LIST_LIST (FRAME_SUBWINDOW_CACHE (f))) |
| 1266 { | |
| 1267 Lisp_Image_Instance *ii = XIMAGE_INSTANCE (XCAR (rest)); | |
| 1268 if (IMAGE_INSTANCE_SUBWINDOW_DISPLAYEDP (ii) | |
| 428 | 1269 && |
| 442 | 1270 IMAGE_INSTANCE_DISPLAY_X (ii) |
| 1271 + IMAGE_INSTANCE_DISPLAY_WIDTH (ii) > x | |
| 428 | 1272 && |
| 442 | 1273 IMAGE_INSTANCE_DISPLAY_X (ii) < x + width |
| 1274 && | |
| 1275 IMAGE_INSTANCE_DISPLAY_Y (ii) | |
| 1276 + IMAGE_INSTANCE_DISPLAY_HEIGHT (ii) > y | |
| 434 | 1277 && |
| 442 | 1278 IMAGE_INSTANCE_DISPLAY_Y (ii) < y + height |
| 1279 && | |
| 1280 !EQ (XCAR (rest), ignored_window)) | |
| 428 | 1281 { |
| 442 | 1282 unmap_subwindow (XCAR (rest)); |
| 428 | 1283 } |
| 1284 } | |
| 1285 } | |
| 1286 | |
| 1287 /**************************************************************************** | |
| 1288 redisplay_unmap_subwindows_maybe | |
| 1289 | |
| 1290 Potentially subwindows from the area in the box defined by the given | |
| 1291 parameters. | |
| 1292 ****************************************************************************/ | |
| 1279 | 1293 void |
| 1294 redisplay_unmap_subwindows_maybe (struct frame *f, int x, int y, int width, | |
| 1295 int height) | |
| 428 | 1296 { |
| 442 | 1297 if (!NILP (XWEAK_LIST_LIST (FRAME_SUBWINDOW_CACHE (f)))) |
| 428 | 1298 { |
| 1299 redisplay_unmap_subwindows (f, x, y, width, height, Qnil); | |
| 1300 } | |
| 1301 } | |
| 1302 | |
| 1279 | 1303 static void |
| 1304 redisplay_unmap_subwindows_except_us (struct frame *f, int x, int y, int width, | |
| 1305 int height, Lisp_Object subwindow) | |
| 428 | 1306 { |
| 442 | 1307 if (!NILP (XWEAK_LIST_LIST (FRAME_SUBWINDOW_CACHE (f)))) |
| 428 | 1308 { |
| 1309 redisplay_unmap_subwindows (f, x, y, width, height, subwindow); | |
| 1310 } | |
| 1311 } | |
| 1312 | |
| 1313 /**************************************************************************** | |
| 1314 redisplay_output_subwindow | |
| 1315 | |
| 1316 output a subwindow. This code borrows heavily from the pixmap stuff, | |
| 1317 although is much simpler not needing to account for partial | |
| 1318 pixmaps, backgrounds etc. | |
| 1319 ****************************************************************************/ | |
| 1320 void | |
| 434 | 1321 redisplay_output_subwindow (struct window *w, |
| 428 | 1322 Lisp_Object image_instance, |
| 1323 struct display_box* db, struct display_glyph_area* dga, | |
| 2286 | 1324 face_index findex, int UNUSED (cursor_start), |
| 1325 int UNUSED (cursor_width), | |
| 1326 int UNUSED (cursor_height)) | |
| 428 | 1327 { |
| 440 | 1328 Lisp_Image_Instance *p = XIMAGE_INSTANCE (image_instance); |
| 428 | 1329 Lisp_Object window; |
| 1330 struct display_glyph_area sdga; | |
| 1331 | |
| 442 | 1332 dga->height = IMAGE_INSTANCE_HEIGHT (p); |
| 1333 dga->width = IMAGE_INSTANCE_WIDTH (p); | |
| 1334 | |
| 1335 /* The first thing we are going to do is update the display | |
| 1336 characteristics of the subwindow. This also clears the dirty | |
| 1337 flags as a side effect. */ | |
| 1338 redisplay_subwindow (image_instance); | |
| 428 | 1339 |
| 1340 /* This makes the glyph area fit into the display area. */ | |
| 1341 if (!redisplay_normalize_glyph_area (db, dga)) | |
| 1342 return; | |
| 1343 | |
| 793 | 1344 window = wrap_window (w); |
| 428 | 1345 |
| 1346 /* Clear the area the subwindow is going into. */ | |
| 1347 redisplay_clear_clipped_region (window, findex, | |
| 1348 db, dga, 0, image_instance); | |
| 1349 | |
| 1350 /* This shrinks the display box to exactly enclose the glyph | |
| 1351 area. */ | |
| 1352 redisplay_normalize_display_box (db, dga); | |
| 1353 | |
| 1354 /* if we can't view the whole window we can't view any of it. We | |
| 1355 have to be careful here since we may be being asked to display | |
| 1356 part of a subwindow, the rest of which is on-screen as well. We | |
| 1357 need to allow this case and map the entire subwindow. We also | |
| 1358 need to be careful since the subwindow could be outside the | |
| 1359 window in the gutter or modeline - we also need to allow these | |
| 1360 cases.*/ | |
| 1361 sdga.xoffset = -dga->xoffset; | |
| 1362 sdga.yoffset = -dga->yoffset; | |
| 442 | 1363 sdga.height = IMAGE_INSTANCE_HEIGHT (p); |
| 1364 sdga.width = IMAGE_INSTANCE_WIDTH (p); | |
| 434 | 1365 |
| 446 | 1366 if (redisplay_display_boxes_in_window_p (w, db, &sdga) == 0 |
| 1367 || | |
| 1368 /* We only want to do full subwindow display for windows that | |
| 1369 are completely in the gutter, otherwise we must clip to be | |
| 1370 safe. */ | |
| 1371 display_boxes_in_gutter_p (XFRAME (w->frame), db, &sdga) <= 0) | |
| 428 | 1372 { |
| 1373 map_subwindow (image_instance, db->xpos, db->ypos, dga); | |
| 1374 } | |
| 1375 else | |
| 1376 { | |
| 1377 sdga.xoffset = sdga.yoffset = 0; | |
| 434 | 1378 map_subwindow (image_instance, db->xpos - dga->xoffset, |
| 428 | 1379 db->ypos - dga->yoffset, &sdga); |
| 1380 } | |
| 1381 } | |
| 1382 | |
| 1383 /**************************************************************************** | |
| 1384 redisplay_output_layout | |
| 1385 | |
| 1386 Output a widget hierarchy. This can safely call itself recursively. | |
| 442 | 1387 |
| 1388 The complexity of outputting layouts is deciding whether to do it or | |
| 1389 not. Consider a layout enclosing some text, the text changes and is | |
| 1390 marked as dirty, but the enclosing layout has not been marked as | |
| 1391 dirty so no updates occur and the text will potentially be truncated. | |
| 1392 Alternatively we hold a back pointer in the image instance to the | |
| 1393 parent and mark the parent as dirty. But the layout code assumes that | |
| 1394 if the layout is dirty then the whole layout should be redisplayed, | |
| 1395 so we then get lots of flashing even though only the text has changed | |
| 1396 size. Of course if the text shrinks in size then we do actually need | |
| 1397 to redisplay the layout to repaint the exposed area. So what happens | |
| 1398 if we make a non-structural change like changing color? Either we | |
| 1399 redisplay everything, or we redisplay nothing. These are exactly the | |
| 1400 issues lwlib has to grapple with. We really need to know what has | |
| 1401 actually changed and make a layout decision based on that. We also | |
| 1402 really need to know what has changed so that we can only make the | |
| 1403 necessary changes in update_subwindow. This has all now been | |
| 1404 implemented, Viva la revolution! | |
| 428 | 1405 ****************************************************************************/ |
| 1406 void | |
| 442 | 1407 redisplay_output_layout (Lisp_Object domain, |
| 428 | 1408 Lisp_Object image_instance, |
| 1409 struct display_box* db, struct display_glyph_area* dga, | |
| 2286 | 1410 face_index findex, int UNUSED (cursor_start), |
| 1411 int UNUSED (cursor_width), int UNUSED (cursor_height)) | |
| 428 | 1412 { |
| 440 | 1413 Lisp_Image_Instance *p = XIMAGE_INSTANCE (image_instance); |
| 442 | 1414 Lisp_Object rest, window = DOMAIN_WINDOW (domain); |
| 3479 | 1415 Ichar_dynarr *buf; |
| 442 | 1416 struct window *w = XWINDOW (window); |
| 1417 struct device *d = DOMAIN_XDEVICE (domain); | |
| 428 | 1418 int layout_height, layout_width; |
| 1419 | |
| 442 | 1420 layout_height = glyph_height (image_instance, domain); |
| 1421 layout_width = glyph_width (image_instance, domain); | |
| 428 | 1422 |
| 1423 dga->height = layout_height; | |
| 1424 dga->width = layout_width; | |
| 442 | 1425 #ifdef DEBUG_WIDGET_OUTPUT |
| 1426 printf ("outputing layout glyph %p\n", p); | |
| 1427 #endif | |
| 428 | 1428 /* This makes the glyph area fit into the display area. */ |
| 1429 if (!redisplay_normalize_glyph_area (db, dga)) | |
| 1430 return; | |
| 1431 | |
| 3479 | 1432 buf = Dynarr_new (Ichar); |
| 1433 | |
| 428 | 1434 /* Highly dodgy optimization. We want to only output the whole |
| 1435 layout if we really have to. */ | |
| 442 | 1436 if (!IMAGE_INSTANCE_OPTIMIZE_OUTPUT (p) |
| 1437 || IMAGE_INSTANCE_LAYOUT_CHANGED (p) | |
| 1438 || IMAGE_INSTANCE_WIDGET_FACE_CHANGED (p) | |
| 1439 || IMAGE_INSTANCE_SIZE_CHANGED (p) | |
| 1440 || IMAGE_INSTANCE_WIDGET_ITEMS_CHANGED (p)) | |
| 428 | 1441 { |
| 1442 /* First clear the area we are drawing into. This is the easiest | |
| 1443 thing to do since we have many gaps that we have to make sure are | |
| 1444 filled in. */ | |
| 1445 redisplay_clear_clipped_region (window, findex, db, dga, 1, Qnil); | |
| 434 | 1446 |
| 428 | 1447 /* Output a border if required */ |
| 1448 if (!NILP (IMAGE_INSTANCE_LAYOUT_BORDER (p))) | |
| 1449 { | |
| 1450 int edges = 0; | |
| 1451 enum edge_style style; | |
| 1452 int ypos = db->ypos; | |
| 863 | 1453 int xpos = db->xpos; |
| 428 | 1454 int height = dga->height; |
| 863 | 1455 int width = dga->width; |
| 434 | 1456 |
| 863 | 1457 /* The bevel_area routines always draw in from the specified |
| 1458 area so there is no need to adjust the displayed area to | |
| 1459 make sure that the lines are visible. */ | |
| 4187 | 1460 if (dga->xoffset >= 0) |
| 428 | 1461 edges |= EDGE_LEFT; |
| 4187 | 1462 if (dga->width - dga->xoffset == layout_width) |
| 428 | 1463 edges |= EDGE_RIGHT; |
| 4187 | 1464 if (dga->yoffset >= 0) |
| 428 | 1465 edges |= EDGE_TOP; |
| 1466 if (dga->height - dga->yoffset == layout_height) | |
| 1467 edges |= EDGE_BOTTOM; | |
| 4187 | 1468 |
| 428 | 1469 if (EQ (IMAGE_INSTANCE_LAYOUT_BORDER (p), Qetched_in)) |
| 1470 style = EDGE_ETCHED_IN; | |
| 1471 else if (EQ (IMAGE_INSTANCE_LAYOUT_BORDER (p), Qetched_out)) | |
| 1472 style = EDGE_ETCHED_OUT; | |
| 1473 else if (EQ (IMAGE_INSTANCE_LAYOUT_BORDER (p), Qbevel_in)) | |
| 1474 style = EDGE_BEVEL_IN; | |
| 1475 else if (INTP (IMAGE_INSTANCE_LAYOUT_BORDER (p))) | |
| 1476 { | |
| 1477 style = EDGE_ETCHED_IN; | |
| 1478 if (edges & EDGE_TOP) | |
| 1479 { | |
| 1480 ypos += XINT (IMAGE_INSTANCE_LAYOUT_BORDER (p)); | |
| 1481 height -= XINT (IMAGE_INSTANCE_LAYOUT_BORDER (p)); | |
| 1482 } | |
| 1483 } | |
| 1484 else | |
| 1485 style = EDGE_BEVEL_OUT; | |
| 1486 | |
| 434 | 1487 MAYBE_DEVMETH (d, bevel_area, |
| 863 | 1488 (w, findex, xpos, ypos, width, height, |
| 1489 DEFAULT_WIDGET_SHADOW_WIDTH, edges, style)); | |
| 428 | 1490 } |
| 1491 } | |
| 434 | 1492 |
| 428 | 1493 /* This shrinks the display box to exactly enclose the glyph |
| 1494 area. */ | |
| 1495 redisplay_normalize_display_box (db, dga); | |
| 1496 | |
| 1497 /* Flip through the widgets in the layout displaying as necessary */ | |
| 1498 LIST_LOOP (rest, IMAGE_INSTANCE_LAYOUT_CHILDREN (p)) | |
| 1499 { | |
| 442 | 1500 Lisp_Object child = glyph_image_instance (XCAR (rest), image_instance, |
| 793 | 1501 ERROR_ME_DEBUG_WARN, 1); |
| 428 | 1502 |
| 1503 struct display_box cdb; | |
| 1504 /* For losing HP-UX */ | |
| 1505 cdb.xpos = db->xpos; | |
| 1506 cdb.ypos = db->ypos; | |
| 1507 cdb.width = db->width; | |
| 1508 cdb.height = db->height; | |
| 1509 | |
| 1510 /* First determine if the image is visible at all */ | |
| 1511 if (IMAGE_INSTANCEP (child)) | |
| 1512 { | |
| 440 | 1513 Lisp_Image_Instance* childii = XIMAGE_INSTANCE (child); |
| 442 | 1514 |
| 428 | 1515 /* The enclosing layout offsets are +ve at this point */ |
| 1516 struct display_glyph_area cdga; | |
| 1517 cdga.xoffset = IMAGE_INSTANCE_XOFFSET (childii) - dga->xoffset; | |
| 1518 cdga.yoffset = IMAGE_INSTANCE_YOFFSET (childii) - dga->yoffset; | |
| 442 | 1519 cdga.width = glyph_width (child, image_instance); |
| 1520 cdga.height = glyph_height (child, image_instance); | |
| 1521 | |
| 1522 IMAGE_INSTANCE_OPTIMIZE_OUTPUT (childii) = | |
| 1523 IMAGE_INSTANCE_OPTIMIZE_OUTPUT (p); | |
| 428 | 1524 |
| 4207 | 1525 /* Although normalization is done by the output routines we have to |
| 1526 do it here so that they don't try and clear all of db. This is | |
| 1527 true below also. */ | |
| 428 | 1528 if (redisplay_normalize_glyph_area (&cdb, &cdga)) |
| 1529 { | |
| 1530 redisplay_normalize_display_box (&cdb, &cdga); | |
| 4207 | 1531 /* Since the display boxes will now be totally in the window if |
| 1532 they are visible at all we can now check this easily. */ | |
| 428 | 1533 if (cdb.xpos < db->xpos || cdb.ypos < db->ypos |
| 1534 || cdb.xpos + cdb.width > db->xpos + db->width | |
| 1535 || cdb.ypos + cdb.height > db->ypos + db->height) | |
| 1536 continue; | |
| 4207 | 1537 /* We have to invert the offset here as normalization will have |
| 1538 made them positive which the output routines will treat as a | |
| 1539 truly +ve offset. */ | |
| 428 | 1540 cdga.xoffset = -cdga.xoffset; |
| 1541 cdga.yoffset = -cdga.yoffset; | |
| 1542 | |
| 1543 switch (IMAGE_INSTANCE_TYPE (childii)) | |
| 1544 { | |
| 1545 case IMAGE_TEXT: | |
| 1546 { | |
| 1547 /* #### This is well hacked and could use some | |
| 1548 generalisation.*/ | |
| 434 | 1549 if (redisplay_normalize_glyph_area (&cdb, &cdga) |
| 1550 && | |
| 442 | 1551 (!IMAGE_INSTANCE_OPTIMIZE_OUTPUT (childii) || |
| 1552 IMAGE_INSTANCE_DIRTYP (childii))) | |
| 428 | 1553 { |
| 1554 struct display_line dl; /* this is fake */ | |
| 1555 Lisp_Object string = | |
| 1556 IMAGE_INSTANCE_TEXT_STRING (childii); | |
| 442 | 1557 unsigned char charsets[NUM_LEADING_BYTES]; |
| 4207 | 1558 struct face_cachel *cachel |
| 1559 = WINDOW_FACE_CACHEL (w, findex); | |
| 1560 | |
| 1561 DISPLAY_LINE_INIT (dl); | |
| 442 | 1562 |
| 867 | 1563 find_charsets_in_ibyte_string (charsets, |
| 4207 | 1564 XSTRING_DATA (string), |
| 1565 XSTRING_LENGTH (string)); | |
| 442 | 1566 ensure_face_cachel_complete (cachel, window, charsets); |
| 1567 | |
| 867 | 1568 convert_ibyte_string_into_ichar_dynarr |
| 4207 | 1569 (XSTRING_DATA (string), XSTRING_LENGTH (string), |
| 1570 buf); | |
| 434 | 1571 |
| 428 | 1572 redisplay_normalize_display_box (&cdb, &cdga); |
| 1573 /* Offsets are now +ve again so be careful | |
| 1574 when fixing up the display line. */ | |
| 1575 /* Munge boxes into display lines. */ | |
| 1576 dl.ypos = (cdb.ypos - cdga.yoffset) | |
| 442 | 1577 + glyph_ascent (child, image_instance); |
| 1578 dl.ascent = glyph_ascent (child, image_instance); | |
| 1579 dl.descent = glyph_descent (child, image_instance); | |
| 428 | 1580 dl.top_clip = cdga.yoffset; |
| 4207 | 1581 dl.clip = (dl.ypos + dl.descent) |
| 1582 - (cdb.ypos + cdb.height); | |
| 428 | 1583 /* output_string doesn't understand offsets in |
| 1584 the same way as other routines - we have to | |
| 1585 add the offset to the width so that we | |
| 1586 output the full string. */ | |
| 4207 | 1587 MAYBE_DEVMETH (d, output_string, |
| 1588 (w, &dl, buf, cdb.xpos, | |
| 1589 cdga.xoffset, cdb.xpos, | |
| 1590 cdga.width + cdga.xoffset, | |
| 1591 findex, 0, 0, 0, 0)); | |
| 428 | 1592 Dynarr_reset (buf); |
| 1593 } | |
| 1594 } | |
| 1595 break; | |
| 434 | 1596 |
| 428 | 1597 case IMAGE_MONO_PIXMAP: |
| 1598 case IMAGE_COLOR_PIXMAP: | |
| 442 | 1599 if (!IMAGE_INSTANCE_OPTIMIZE_OUTPUT (childii) |
| 1600 || IMAGE_INSTANCE_DIRTYP (childii)) | |
| 428 | 1601 redisplay_output_pixmap (w, child, &cdb, &cdga, findex, |
| 1602 0, 0, 0, 0); | |
| 1603 break; | |
| 434 | 1604 |
| 428 | 1605 case IMAGE_WIDGET: |
| 442 | 1606 if (EQ (IMAGE_INSTANCE_WIDGET_TYPE (childii), Qlayout)) |
| 1607 { | |
| 1608 redisplay_output_layout (image_instance, child, &cdb, &cdga, findex, | |
| 1609 0, 0, 0); | |
| 1610 break; | |
| 1611 } | |
| 428 | 1612 case IMAGE_SUBWINDOW: |
| 442 | 1613 if (!IMAGE_INSTANCE_OPTIMIZE_OUTPUT (childii) || |
| 1614 IMAGE_INSTANCE_DIRTYP (childii)) | |
| 428 | 1615 redisplay_output_subwindow (w, child, &cdb, &cdga, findex, |
| 1616 0, 0, 0); | |
| 1617 break; | |
| 434 | 1618 |
| 428 | 1619 case IMAGE_NOTHING: |
| 1620 /* nothing is as nothing does */ | |
| 1621 break; | |
| 434 | 1622 |
| 428 | 1623 case IMAGE_POINTER: |
| 1624 default: | |
| 2500 | 1625 ABORT (); |
| 428 | 1626 } |
| 1627 } | |
| 442 | 1628 IMAGE_INSTANCE_OPTIMIZE_OUTPUT (childii) = 0; |
| 428 | 1629 } |
| 1630 } | |
| 442 | 1631 |
| 1632 /* Update any display properties. I'm not sure whether this actually | |
| 1633 does anything for layouts except clear the changed flags. */ | |
| 1634 redisplay_subwindow (image_instance); | |
| 1635 | |
| 428 | 1636 Dynarr_free (buf); |
| 1637 } | |
| 1638 | |
| 1639 /**************************************************************************** | |
| 1640 redisplay_output_pixmap | |
| 1641 | |
| 1642 | |
| 1643 output a pixmap. | |
| 1644 ****************************************************************************/ | |
| 1645 void | |
| 434 | 1646 redisplay_output_pixmap (struct window *w, |
| 428 | 1647 Lisp_Object image_instance, |
| 1648 struct display_box* db, struct display_glyph_area* dga, | |
| 1649 face_index findex, int cursor_start, int cursor_width, | |
| 1650 int cursor_height, int offset_bitmap) | |
| 1651 { | |
| 1652 struct frame *f = XFRAME (w->frame); | |
| 1653 struct device *d = XDEVICE (f->device); | |
| 440 | 1654 Lisp_Image_Instance *p = XIMAGE_INSTANCE (image_instance); |
| 793 | 1655 Lisp_Object window = wrap_window (w); |
| 1656 | |
| 428 | 1657 |
| 1658 dga->height = IMAGE_INSTANCE_PIXMAP_HEIGHT (p); | |
| 1659 dga->width = IMAGE_INSTANCE_PIXMAP_WIDTH (p); | |
| 1660 | |
| 819 | 1661 #ifdef DEBUG_REDISPLAY |
| 1662 printf ("redisplay_output_pixmap(request) \ | |
| 4187 | 1663 [%dx%d@%d+%d] in [%dx%d@%d+%d]\n", |
| 819 | 1664 db->width, db->height, db->xpos, db->ypos, |
| 1665 dga->width, dga->height, dga->xoffset, dga->yoffset); | |
| 1666 #endif | |
| 1667 | |
| 428 | 1668 /* This makes the glyph area fit into the display area. */ |
| 1669 if (!redisplay_normalize_glyph_area (db, dga)) | |
| 1670 return; | |
| 1671 | |
| 819 | 1672 #ifdef DEBUG_REDISPLAY |
| 1673 printf ("redisplay_output_pixmap(normalized) \ | |
| 1674 [%dx%d@%d+%d] in [%dx%d@%d+%d]\n", | |
| 1675 db->width, db->height, db->xpos, db->ypos, | |
| 1676 dga->width, dga->height, dga->xoffset, dga->yoffset); | |
| 1677 #endif | |
| 1678 | |
| 428 | 1679 /* Clear the area the pixmap is going into. The pixmap itself will |
| 1680 always take care of the full width. We don't want to clear where | |
| 1681 it is going to go in order to avoid flicker. So, all we have to | |
| 1682 take care of is any area above or below the pixmap. If the pixmap | |
| 1683 has a mask in which case we have to clear the whole damn thing | |
| 1684 since we can't yet clear just the area not included in the | |
| 1685 mask. */ | |
| 1686 if (!offset_bitmap) | |
| 1687 { | |
| 1688 redisplay_clear_clipped_region (window, findex, | |
| 434 | 1689 db, dga, |
| 442 | 1690 (IMAGE_INSTANCE_PIXMAP_MASK (p) != 0), |
| 428 | 1691 Qnil); |
| 1692 | |
| 1693 /* This shrinks the display box to exactly enclose the glyph | |
| 1694 area. */ | |
| 1695 redisplay_normalize_display_box (db, dga); | |
| 1696 } | |
| 1697 assert (db->xpos >= 0 && db->ypos >= 0); | |
| 1698 | |
| 1699 MAYBE_DEVMETH (d, output_pixmap, (w, image_instance, | |
| 1700 db, dga, | |
| 1701 findex, cursor_start, | |
| 1702 cursor_width, cursor_height, | |
| 1703 offset_bitmap)); | |
| 1704 } | |
| 1705 | |
| 1706 /**************************************************************************** | |
| 1707 redisplay_clear_region | |
| 1708 | |
| 1709 Clear the area in the box defined by the given parameters using the | |
| 1710 given face. This has been generalised so that subwindows can be | |
| 1711 coped with effectively. | |
| 1712 ****************************************************************************/ | |
| 1713 void | |
| 1714 redisplay_clear_region (Lisp_Object locale, face_index findex, int x, int y, | |
| 1715 int width, int height) | |
| 1716 { | |
| 1717 struct window *w = NULL; | |
| 1718 struct frame *f = NULL; | |
| 1719 struct device *d; | |
| 1720 Lisp_Object background_pixmap = Qunbound; | |
| 1721 Lisp_Object fcolor = Qnil, bcolor = Qnil; | |
| 1722 | |
| 1723 if (!width || !height) | |
| 1724 return; | |
| 1725 | |
| 1726 if (WINDOWP (locale)) | |
| 1727 { | |
| 1728 w = XWINDOW (locale); | |
| 1729 f = XFRAME (w->frame); | |
| 1730 } | |
| 1731 else if (FRAMEP (locale)) | |
| 1732 { | |
| 1733 w = NULL; | |
| 1734 f = XFRAME (locale); | |
| 1735 } | |
| 1736 else | |
| 2500 | 1737 ABORT (); |
| 428 | 1738 |
| 1739 d = XDEVICE (f->device); | |
| 1740 | |
| 1741 /* if we have subwindows in the region we have to unmap them */ | |
| 1742 redisplay_unmap_subwindows_maybe (f, x, y, width, height); | |
| 1743 | |
| 1744 /* #### This isn't quite right for when this function is called | |
| 1745 from the toolbar code. */ | |
| 434 | 1746 |
| 428 | 1747 /* Don't use a backing pixmap in the border area */ |
| 1748 if (x >= FRAME_LEFT_BORDER_END (f) | |
| 1749 && x < FRAME_RIGHT_BORDER_START (f) | |
| 1750 && y >= FRAME_TOP_BORDER_END (f) | |
| 1751 && y < FRAME_BOTTOM_BORDER_START (f)) | |
| 1752 { | |
| 1753 Lisp_Object temp; | |
| 434 | 1754 |
| 428 | 1755 if (w) |
| 1756 { | |
| 1757 temp = WINDOW_FACE_CACHEL_BACKGROUND_PIXMAP (w, findex); | |
| 434 | 1758 |
| 428 | 1759 if (IMAGE_INSTANCEP (temp) |
| 1760 && IMAGE_INSTANCE_PIXMAP_TYPE_P (XIMAGE_INSTANCE (temp))) | |
| 1761 { | |
| 1762 /* #### maybe we could implement such that a string | |
| 1763 can be a background pixmap? */ | |
| 1764 background_pixmap = temp; | |
| 1765 } | |
| 1766 } | |
| 1767 else | |
| 1768 { | |
| 1769 temp = FACE_BACKGROUND_PIXMAP (Vdefault_face, locale); | |
| 434 | 1770 |
| 428 | 1771 if (IMAGE_INSTANCEP (temp) |
| 1772 && IMAGE_INSTANCE_PIXMAP_TYPE_P (XIMAGE_INSTANCE (temp))) | |
| 1773 { | |
| 1774 background_pixmap = temp; | |
| 1775 } | |
| 1776 } | |
| 434 | 1777 } |
| 428 | 1778 |
| 1779 if (!UNBOUNDP (background_pixmap) && | |
| 1780 XIMAGE_INSTANCE_PIXMAP_DEPTH (background_pixmap) == 0) | |
| 1781 { | |
| 1782 if (w) | |
| 1783 { | |
| 1784 fcolor = WINDOW_FACE_CACHEL_FOREGROUND (w, findex); | |
| 1785 bcolor = WINDOW_FACE_CACHEL_BACKGROUND (w, findex); | |
| 1786 } | |
| 1787 else | |
| 1788 { | |
| 1789 fcolor = FACE_FOREGROUND (Vdefault_face, locale); | |
| 1790 bcolor = FACE_BACKGROUND (Vdefault_face, locale); | |
| 1791 } | |
| 1792 } | |
| 1793 else | |
| 1794 { | |
| 1795 fcolor = (w ? | |
| 1796 WINDOW_FACE_CACHEL_BACKGROUND (w, findex) : | |
| 1797 FACE_BACKGROUND (Vdefault_face, locale)); | |
| 434 | 1798 |
| 428 | 1799 } |
| 434 | 1800 |
| 428 | 1801 if (UNBOUNDP (background_pixmap)) |
| 1802 background_pixmap = Qnil; | |
| 434 | 1803 |
| 1804 DEVMETH (d, clear_region, | |
| 428 | 1805 (locale, d, f, findex, x, y, width, height, fcolor, bcolor, background_pixmap)); |
| 1806 } | |
| 1807 | |
| 1808 /**************************************************************************** | |
| 1809 redisplay_clear_clipped_region | |
| 1810 | |
| 1811 Clear the area in the dest display_box not covered by the src | |
| 442 | 1812 display_glyph_area using the given face. This is a common occurrence |
| 428 | 1813 for images shorter than the display line. Clipping can be played |
| 1814 around with by altering these. glyphsrc should be normalized. | |
| 1815 ****************************************************************************/ | |
| 1816 static void | |
| 434 | 1817 redisplay_clear_clipped_region (Lisp_Object window, face_index findex, |
| 1818 struct display_box* dest, struct display_glyph_area* glyphsrc, | |
| 428 | 1819 int fullheight_p, Lisp_Object ignored_subwindow) |
| 1820 { | |
| 1821 /* assume dest->xpos >= 0 */ | |
| 1822 int clear_x; | |
| 1823 struct frame* f = XFRAME (XWINDOW (window)->frame); | |
| 1824 | |
| 1825 if (glyphsrc->xoffset > 0) | |
| 1826 { | |
| 1827 clear_x = dest->xpos + glyphsrc->xoffset; | |
| 1828 } | |
| 1829 else | |
| 1830 { | |
| 1831 clear_x = dest->xpos; | |
| 1832 } | |
| 1833 | |
| 1834 /* If we need the whole height cleared then just do it. */ | |
| 1835 if (fullheight_p) | |
| 1836 { | |
| 1837 redisplay_clear_region (window, findex, clear_x, dest->ypos, | |
| 1838 glyphsrc->width, dest->height); | |
| 1839 } | |
| 1840 else | |
| 1841 { | |
| 434 | 1842 int yoffset = (glyphsrc->yoffset > 0 ? glyphsrc->yoffset : 0); |
| 1843 | |
| 428 | 1844 /* We need to make sure that subwindows are unmapped from the |
| 4187 | 1845 whole area. */ |
| 428 | 1846 redisplay_unmap_subwindows_except_us (f, clear_x, dest->ypos, |
| 1847 glyphsrc->width, dest->height, | |
| 1848 ignored_subwindow); | |
| 1849 /* first the top box */ | |
| 1850 if (yoffset > 0) | |
| 1851 { | |
| 1852 redisplay_clear_region (window, findex, clear_x, dest->ypos, | |
| 1853 glyphsrc->width, yoffset); | |
| 434 | 1854 |
| 428 | 1855 } |
| 1856 /* Then the bottom box */ | |
| 1857 if (yoffset + glyphsrc->height < dest->height) | |
| 1858 { | |
| 1859 redisplay_clear_region (window, findex, clear_x, | |
| 1860 dest->ypos + yoffset + glyphsrc->height, | |
| 434 | 1861 glyphsrc->width, |
| 428 | 1862 dest->height - (yoffset + glyphsrc->height)); |
| 1863 | |
| 1864 } | |
| 1865 } | |
| 1866 } | |
| 1867 | |
| 1868 /***************************************************************************** | |
| 1869 redisplay_normalize_glyph_area | |
| 1870 redisplay_normalize_display_box | |
| 1871 | |
| 819 | 1872 Calculate the visible box for displaying glyphsrc in dest. |
| 1873 | |
| 1874 display_box and display_glyph_area are used to represent an area to | |
| 1875 displayed and where to display it. Using these two structures all | |
| 1876 combinations of clipping and position can be accommodated. | |
| 1877 | |
| 1878 dest - display_box | |
| 1879 | |
| 1880 xpos - absolute horizontal position of area. | |
| 1881 | |
| 4187 | 1882 ypos - absolute vertical position of area. |
| 819 | 1883 |
| 1884 glyphsrc - display_glyph_area | |
| 1885 | |
| 1886 xoffset - horizontal offset of the glyph, +ve means display | |
| 1887 the glyph with the x position offset by xoffset, -ve means | |
| 1888 display starting xoffset into the glyph. | |
| 1889 | |
| 1890 yoffset - vertical offset of the glyph, +ve means display the | |
| 1891 glyph with y position offset by yoffset, -ve means display | |
| 1892 starting xoffset into the glyph. | |
| 1893 | |
| 428 | 1894 ****************************************************************************/ |
| 1895 int | |
| 434 | 1896 redisplay_normalize_glyph_area (struct display_box* dest, |
| 428 | 1897 struct display_glyph_area* glyphsrc) |
| 1898 { | |
| 1899 if (dest->xpos + glyphsrc->xoffset > dest->xpos + dest->width | |
| 1900 || | |
| 1901 dest->ypos + glyphsrc->yoffset > dest->ypos + dest->height | |
| 1902 || | |
| 1903 -glyphsrc->xoffset >= glyphsrc->width | |
| 1904 || | |
| 448 | 1905 -glyphsrc->yoffset >= glyphsrc->height |
| 1906 || | |
| 1907 /* #### Not sure why this wasn't coped with before but normalizing | |
| 1908 to zero width or height is definitely wrong. */ | |
| 1909 (dest->xpos + glyphsrc->xoffset + glyphsrc->width > dest->xpos + dest->width | |
| 1910 && | |
| 1911 dest->width - glyphsrc->xoffset <= 0) | |
| 1912 || | |
| 1913 (dest->ypos + glyphsrc->yoffset + glyphsrc->height > dest->ypos + dest->height | |
| 1914 && | |
| 1915 dest->height - glyphsrc->yoffset <= 0)) | |
| 428 | 1916 { |
| 1917 /* It's all clipped out */ | |
| 1918 return 0; | |
| 1919 } | |
| 1920 | |
| 819 | 1921 /* Horizontal offsets. This works because xoffset can be -ve as well |
| 1922 as +ve. When we enter this function the glyphsrc width and | |
| 1923 height are set to the actual glyph width and height irrespective | |
| 1924 of how much can be displayed. We are trying to clip both the | |
| 1925 offset into the image and the rightmost bounding box. Its | |
| 1926 possible for the glyph width to be much larger than the area we | |
| 1927 are displaying into (e.g. a large glyph in a small frame). */ | |
| 428 | 1928 if (dest->xpos + glyphsrc->xoffset + glyphsrc->width > dest->xpos + dest->width) |
| 1929 { | |
| 819 | 1930 /* glyphsrc offset is +ve we are trying to display offset from the |
| 1931 origin (the bounding box contains some space and then the | |
| 1932 glyph). At most the width we want to display is dest->width - | |
| 1933 glyphsrc->xoffset. */ | |
| 428 | 1934 if (glyphsrc->xoffset > 0) |
| 1935 glyphsrc->width = dest->width - glyphsrc->xoffset; | |
| 819 | 1936 /* glyphsrc offset is -ve we are trying to display hard up |
| 1937 against the dest corner inset into the glyphsrc by | |
| 1938 xoffset.*/ | |
| 4187 | 1939 else if (glyphsrc->xoffset < 0) |
| 819 | 1940 { |
| 1941 glyphsrc->width += glyphsrc->xoffset; | |
| 1942 glyphsrc->width = min (glyphsrc->width, dest->width); | |
| 1943 } | |
| 428 | 1944 else |
| 1945 glyphsrc->width = dest->width; | |
| 1946 } | |
| 1947 | |
| 4187 | 1948 else if (glyphsrc->xoffset < 0) |
| 428 | 1949 glyphsrc->width += glyphsrc->xoffset; |
| 1950 | |
| 1951 /* Vertical offsets. This works because yoffset can be -ve as well as +ve */ | |
| 1952 if (dest->ypos + glyphsrc->yoffset + glyphsrc->height > dest->ypos + dest->height) | |
| 1953 { | |
| 819 | 1954 if ((glyphsrc->yoffset > 0) && (dest->height > glyphsrc->yoffset)) |
| 428 | 1955 glyphsrc->height = dest->height - glyphsrc->yoffset; |
| 4187 | 1956 else if (glyphsrc->yoffset < 0) |
| 819 | 1957 { |
| 1958 glyphsrc->height += glyphsrc->yoffset; | |
| 1959 glyphsrc->height = min (glyphsrc->height, dest->height); | |
| 1960 } | |
| 428 | 1961 else |
| 1962 glyphsrc->height = dest->height; | |
| 1963 } | |
| 1964 | |
| 819 | 1965 else if (glyphsrc->yoffset < 0) |
| 428 | 1966 glyphsrc->height += glyphsrc->yoffset; |
| 1967 | |
| 1968 return 1; | |
| 1969 } | |
| 1970 | |
| 1971 static void | |
| 434 | 1972 redisplay_normalize_display_box (struct display_box* dest, |
| 428 | 1973 struct display_glyph_area* glyphsrc) |
| 1974 { | |
| 1975 /* Adjust the destination area. At the end of this the destination | |
| 1976 area will exactly enclose the glyph area. The only remaining | |
| 1977 adjustment will be offsets into the glyph area. */ | |
| 1978 | |
| 1979 /* Horizontal adjustment. */ | |
| 1980 if (glyphsrc->xoffset > 0) | |
| 1981 { | |
| 1982 dest->xpos += glyphsrc->xoffset; | |
| 1983 dest->width -= glyphsrc->xoffset; | |
| 1984 glyphsrc->xoffset = 0; | |
| 1985 } | |
| 1986 else | |
| 1987 glyphsrc->xoffset = -glyphsrc->xoffset; | |
| 1988 | |
| 1989 if (glyphsrc->width < dest->width) | |
| 1990 dest->width = glyphsrc->width; | |
| 1991 | |
| 1992 /* Vertical adjustment. */ | |
| 1993 if (glyphsrc->yoffset > 0) | |
| 1994 { | |
| 1995 dest->ypos += glyphsrc->yoffset; | |
| 1996 dest->height -= glyphsrc->yoffset; | |
| 1997 glyphsrc->yoffset = 0; | |
| 1998 } | |
| 1999 else | |
| 2000 glyphsrc->yoffset = -glyphsrc->yoffset; | |
| 2001 | |
| 2002 if (glyphsrc->height < dest->height) | |
| 2003 dest->height = glyphsrc->height; | |
| 2004 } | |
| 2005 | |
| 2006 /***************************************************************************** | |
| 2007 redisplay_display_boxes_in_window_p | |
| 2008 | |
| 446 | 2009 Determine whether the required display_glyph_area is completely inside |
| 2010 the window. -1 means the display_box is not in the window. 1 means the | |
| 2011 display_box and the display_glyph_area are in the window. 0 means | |
| 428 | 2012 the display_box is in the window but the display_glyph_area is not. |
| 2013 ****************************************************************************/ | |
| 2014 static int | |
| 2015 redisplay_display_boxes_in_window_p (struct window* w, | |
| 2016 struct display_box* db, | |
| 2017 struct display_glyph_area* dga) | |
| 2018 { | |
| 2019 int left = WINDOW_TEXT_LEFT (w); | |
| 2020 int right = WINDOW_TEXT_RIGHT (w); | |
| 2021 int top = WINDOW_TEXT_TOP (w); | |
| 2022 int bottom = WINDOW_TEXT_BOTTOM (w); | |
| 2023 | |
| 2024 if (db->xpos < left || db->ypos < top | |
| 2025 || db->xpos + db->width > right | |
| 2026 || db->ypos + db->height > bottom) | |
| 446 | 2027 /* We are not displaying in a window at all */ |
| 2028 return -1; | |
| 434 | 2029 |
| 428 | 2030 if (db->xpos + dga->xoffset >= left |
| 2031 && | |
| 2032 db->ypos + dga->yoffset >= top | |
| 2033 && | |
| 2034 db->xpos + dga->xoffset + dga->width <= right | |
| 2035 && | |
| 2036 db->ypos + dga->yoffset + dga->height <= bottom) | |
| 2037 return 1; | |
| 2038 | |
| 446 | 2039 return 0; |
| 428 | 2040 } |
| 2041 | |
| 2042 /***************************************************************************** | |
| 2043 redisplay_calculate_display_boxes | |
| 2044 | |
| 2045 Convert from rune/display_line co-ordinates to display_box | |
| 2046 co-ordinates. | |
| 2047 ****************************************************************************/ | |
| 2048 int | |
| 2049 redisplay_calculate_display_boxes (struct display_line *dl, int xpos, | |
| 819 | 2050 int xoffset, int yoffset, int start_pixpos, |
| 4187 | 2051 int width, struct display_box* dest, |
| 428 | 2052 struct display_glyph_area* src) |
| 2053 { | |
| 2054 dest->xpos = xpos; | |
| 2055 dest->ypos = DISPLAY_LINE_YPOS (dl); | |
| 2056 dest->width = width; | |
| 2057 dest->height = DISPLAY_LINE_HEIGHT (dl); | |
| 2058 | |
| 2059 src->xoffset = -xoffset; | |
| 2060 src->width = 0; | |
| 2061 src->height = 0; | |
| 2062 | |
| 819 | 2063 src->yoffset = -dl->top_clip + yoffset; |
| 2064 | |
| 428 | 2065 if (start_pixpos >=0 && start_pixpos > xpos) |
| 2066 { | |
| 2067 /* Oops, we're asking for a start outside of the displayable | |
| 4187 | 2068 area. */ |
| 428 | 2069 if (start_pixpos > xpos + width) |
| 2070 return 0; | |
| 2071 dest->xpos = start_pixpos; | |
| 2072 dest->width -= (start_pixpos - xpos); | |
| 2073 /* Offsets are -ve when we want to clip pixels off the displayed | |
| 4187 | 2074 glyph. */ |
| 428 | 2075 src->xoffset -= (start_pixpos - xpos); |
| 2076 } | |
| 2077 | |
| 2078 return 1; | |
| 2079 } | |
| 2080 | |
| 2081 /***************************************************************************** | |
| 2082 redisplay_clear_top_of_window | |
| 2083 | |
| 2084 If window is topmost, clear the internal border above it. | |
| 2085 ****************************************************************************/ | |
| 448 | 2086 void |
| 428 | 2087 redisplay_clear_top_of_window (struct window *w) |
| 2088 { | |
| 793 | 2089 Lisp_Object window = wrap_window (w); |
| 2090 | |
| 428 | 2091 |
| 2092 if (!NILP (Fwindow_highest_p (window))) | |
| 2093 { | |
| 2094 struct frame *f = XFRAME (w->frame); | |
| 2095 int x, y, width, height; | |
| 2096 | |
| 2097 x = w->pixel_left; | |
| 2098 width = w->pixel_width; | |
| 2099 | |
| 2100 if (window_is_leftmost (w)) | |
| 2101 { | |
| 2102 x -= FRAME_BORDER_WIDTH (f); | |
| 2103 width += FRAME_BORDER_WIDTH (f); | |
| 2104 } | |
| 2105 if (window_is_rightmost (w)) | |
| 2106 width += FRAME_BORDER_WIDTH (f); | |
| 2107 | |
| 2108 y = FRAME_TOP_BORDER_START (f) - 1; | |
| 2109 height = FRAME_BORDER_HEIGHT (f) + 1; | |
| 2110 | |
| 2111 redisplay_clear_region (window, DEFAULT_INDEX, x, y, width, height); | |
| 2112 } | |
| 2113 } | |
| 2114 | |
| 2115 /***************************************************************************** | |
| 2116 redisplay_clear_to_window_end | |
| 2117 | |
| 2118 Clear the area between ypos1 and ypos2. Each margin area and the | |
| 2119 text area is handled separately since they may each have their own | |
| 2120 background color. | |
| 2121 ****************************************************************************/ | |
| 2122 void | |
| 2123 redisplay_clear_to_window_end (struct window *w, int ypos1, int ypos2) | |
| 2124 { | |
| 2125 struct frame *f = XFRAME (w->frame); | |
| 2126 struct device *d = XDEVICE (f->device); | |
| 2127 | |
| 2128 if (HAS_DEVMETH_P (d, clear_to_window_end)) | |
| 2129 DEVMETH (d, clear_to_window_end, (w, ypos1, ypos2)); | |
| 2130 else | |
| 2131 { | |
| 2132 int height = ypos2 - ypos1; | |
| 434 | 2133 |
| 428 | 2134 if (height) |
| 2135 { | |
| 2136 Lisp_Object window; | |
| 2137 int bflag = 0 ; /* (window_needs_vertical_divider (w) ? 0 : 1);*/ | |
| 2138 layout_bounds bounds; | |
| 434 | 2139 |
| 428 | 2140 bounds = calculate_display_line_boundaries (w, bflag); |
| 793 | 2141 window = wrap_window (w); |
| 428 | 2142 |
| 2143 if (window_is_leftmost (w)) | |
| 2144 redisplay_clear_region (window, DEFAULT_INDEX, FRAME_LEFT_BORDER_START (f), | |
| 2145 ypos1, FRAME_BORDER_WIDTH (f), height); | |
| 434 | 2146 |
| 428 | 2147 if (bounds.left_in - bounds.left_out > 0) |
| 2148 redisplay_clear_region (window, | |
| 2149 get_builtin_face_cache_index (w, Vleft_margin_face), | |
| 2150 bounds.left_out, ypos1, | |
| 2151 bounds.left_in - bounds.left_out, height); | |
| 434 | 2152 |
| 428 | 2153 if (bounds.right_in - bounds.left_in > 0) |
| 434 | 2154 redisplay_clear_region (window, |
| 428 | 2155 DEFAULT_INDEX, |
| 2156 bounds.left_in, ypos1, | |
| 2157 bounds.right_in - bounds.left_in, height); | |
| 434 | 2158 |
| 428 | 2159 if (bounds.right_out - bounds.right_in > 0) |
| 2160 redisplay_clear_region (window, | |
| 2161 get_builtin_face_cache_index (w, Vright_margin_face), | |
| 2162 bounds.right_in, ypos1, | |
| 2163 bounds.right_out - bounds.right_in, height); | |
| 434 | 2164 |
| 428 | 2165 if (window_is_rightmost (w)) |
| 2166 redisplay_clear_region (window, DEFAULT_INDEX, FRAME_RIGHT_BORDER_START (f), | |
| 2167 ypos1, FRAME_BORDER_WIDTH (f), height); | |
| 2168 } | |
| 2169 } | |
| 2170 } | |
| 2171 | |
| 2172 /***************************************************************************** | |
| 2173 redisplay_clear_bottom_of_window | |
| 2174 | |
| 2175 Clear window from right below the last display line to right above | |
| 2176 the modeline. The calling function can limit the area actually | |
| 2177 erased by setting min_start and/or max_end to positive values. | |
| 2178 ****************************************************************************/ | |
| 2179 void | |
| 2180 redisplay_clear_bottom_of_window (struct window *w, display_line_dynarr *ddla, | |
| 2181 int min_start, int max_end) | |
| 2182 { | |
| 2183 struct frame *f = XFRAME (w->frame); | |
| 2184 int ypos1, ypos2; | |
| 2185 int ddla_len = Dynarr_length (ddla); | |
| 2186 | |
| 2187 ypos2 = WINDOW_TEXT_BOTTOM (w); | |
| 2188 #ifdef HAVE_SCROLLBARS | |
| 2189 /* This adjustment is to catch the intersection of any scrollbars. */ | |
| 2190 if (f->windows_structure_changed && NILP (w->scrollbar_on_top_p)) | |
| 2191 ypos2 += window_scrollbar_height (w); | |
| 2192 #endif | |
| 2193 | |
| 2194 if (ddla_len) | |
| 2195 { | |
| 2196 if (ddla_len == 1 && Dynarr_atp (ddla, 0)->modeline) | |
| 2197 { | |
| 2198 ypos1 = WINDOW_TEXT_TOP (w); | |
| 2199 #ifdef HAVE_SCROLLBARS | |
| 2200 /* This adjustment is to catch the intersection of any scrollbars. */ | |
| 2201 if (f->windows_structure_changed && !NILP (w->scrollbar_on_top_p)) | |
| 2202 ypos1 -= window_scrollbar_height (w); | |
| 2203 #endif | |
| 2204 } | |
| 2205 else | |
| 2206 { | |
| 2207 struct display_line *dl = Dynarr_atp (ddla, ddla_len - 1); | |
| 2208 ypos1 = dl->ypos + dl->descent - dl->clip; | |
| 2209 } | |
| 2210 } | |
| 2211 else | |
| 2212 ypos1 = WINDOW_TEXT_TOP (w); | |
| 2213 | |
| 2214 /* #### See if this can be made conditional on the frame | |
| 2215 changing size. */ | |
| 2216 if (MINI_WINDOW_P (w)) | |
| 2217 ypos2 += FRAME_BORDER_HEIGHT (f); | |
| 2218 | |
| 2219 if (min_start >= 0 && ypos1 < min_start) | |
| 2220 ypos1 = min_start; | |
| 2221 if (max_end >= 0 && ypos2 > max_end) | |
| 2222 ypos2 = max_end; | |
| 2223 | |
| 2224 if (ypos2 <= ypos1) | |
| 2225 return; | |
| 2226 | |
| 2227 redisplay_clear_to_window_end (w, ypos1, ypos2); | |
| 2228 } | |
| 2229 | |
| 2230 /***************************************************************************** | |
| 2231 redisplay_update_line | |
| 2232 | |
| 2233 This is used during incremental updates to update a single line and | |
| 2234 correct the offsets on all lines below it. At the moment | |
| 2235 update_values is false if we are only updating the modeline. | |
| 2236 ****************************************************************************/ | |
| 2237 void | |
| 2238 redisplay_update_line (struct window *w, int first_line, int last_line, | |
| 2239 int update_values) | |
| 2240 { | |
| 2241 struct frame *f = XFRAME (w->frame); | |
| 2242 struct device *d = XDEVICE (f->device); | |
| 2243 | |
| 2244 display_line_dynarr *cdla = window_display_lines (w, CURRENT_DISP); | |
| 2245 display_line_dynarr *ddla = window_display_lines (w, DESIRED_DISP); | |
| 2246 | |
| 442 | 2247 MAYBE_DEVMETH (d, window_output_begin, (w)); |
| 428 | 2248 |
| 2249 while (first_line <= last_line) | |
| 2250 { | |
| 826 | 2251 Charcount old_len = (Dynarr_atp (cdla, first_line)->end_charpos - |
| 2252 Dynarr_atp (cdla, first_line)->charpos); | |
| 2253 Charcount new_len = (Dynarr_atp (ddla, first_line)->end_charpos - | |
| 2254 Dynarr_atp (ddla, first_line)->charpos); | |
| 428 | 2255 |
| 2256 assert (Dynarr_length (cdla) == Dynarr_length (ddla)); | |
| 2257 | |
| 2258 /* Output the changes. */ | |
| 2259 output_display_line (w, cdla, ddla, first_line, -1, -1); | |
| 2260 | |
| 2261 /* Update the offsets. */ | |
| 2262 if (update_values) | |
| 2263 { | |
| 2264 int cur_line = first_line + 1; | |
| 2265 while (cur_line < Dynarr_length (cdla)) | |
| 2266 { | |
| 2267 Dynarr_atp (cdla, cur_line)->offset += (new_len - old_len); | |
| 2268 Dynarr_atp (ddla, cur_line)->offset += (new_len - old_len); | |
| 2269 cur_line++; | |
| 2270 } | |
| 2271 } | |
| 2272 | |
| 2273 /* Update the window_end_pos and other settings. */ | |
| 2274 if (update_values) | |
| 2275 { | |
| 2276 w->window_end_pos[CURRENT_DISP] -= (new_len - old_len); | |
| 2277 | |
| 2278 if (Dynarr_atp (ddla, first_line)->cursor_elt != -1) | |
| 2279 { | |
| 2280 w->last_point_x[CURRENT_DISP] = w->last_point_x[DESIRED_DISP]; | |
| 2281 w->last_point_y[CURRENT_DISP] = w->last_point_y[DESIRED_DISP]; | |
| 2282 } | |
| 2283 } | |
| 2284 | |
| 2285 first_line++; | |
| 2286 } | |
| 2287 | |
| 2288 /* Update the window max line length. We have to scan the entire | |
| 2289 set of display lines otherwise we might not detect if the max is | |
| 2290 supposed to shrink. */ | |
| 2291 if (update_values) | |
| 2292 { | |
| 2293 int line = 0; | |
| 2294 | |
| 2295 w->max_line_len = 0; | |
| 2296 while (line < Dynarr_length (ddla)) | |
| 2297 { | |
| 2298 struct display_line *dl = Dynarr_atp (ddla, line); | |
| 2299 | |
| 2300 if (!dl->modeline) | |
| 2301 w->max_line_len = max (dl->num_chars, w->max_line_len); | |
| 2302 | |
| 2303 line++; | |
| 2304 } | |
| 2305 } | |
| 2306 | |
| 2307 w->last_modified[CURRENT_DISP] = w->last_modified[DESIRED_DISP]; | |
| 2308 w->last_facechange[CURRENT_DISP] = w->last_facechange[DESIRED_DISP]; | |
| 2309 Fset_marker (w->last_point[CURRENT_DISP], | |
| 2310 Fmarker_position (w->last_point[DESIRED_DISP]), w->buffer); | |
| 2311 Fset_marker (w->last_start[CURRENT_DISP], | |
| 2312 Fmarker_position (w->last_start[DESIRED_DISP]), w->buffer); | |
| 2313 | |
| 2314 /* We don't bother updating the vertical scrollbars here. This | |
| 2315 gives us a performance increase while having minimal loss of | |
| 2316 quality to the scrollbar slider size and position since when this | |
| 2317 function is called we know that the changes to the buffer were | |
| 2318 very localized. We have to update the horizontal scrollbars, | |
| 2319 though, because this routine could cause a change which has a | |
| 2320 larger impact on their sizing. */ | |
| 2321 /* #### See if we can get away with only calling this if | |
| 2322 max_line_len is greater than the window_char_width. */ | |
| 462 | 2323 /* #### BILL!!! Should we do this for GTK as well? */ |
| 428 | 2324 #if defined(HAVE_SCROLLBARS) && defined(HAVE_X_WINDOWS) |
| 2325 { | |
| 2326 extern int stupid_vertical_scrollbar_drag_hack; | |
| 2327 | |
| 2328 update_window_scrollbars (w, NULL, 1, stupid_vertical_scrollbar_drag_hack); | |
| 2329 stupid_vertical_scrollbar_drag_hack = 1; | |
| 2330 } | |
| 2331 #endif | |
| 2332 | |
| 442 | 2333 redisplay_redraw_cursor (f, 0); |
| 2334 MAYBE_DEVMETH (d, window_output_end, (w)); | |
| 428 | 2335 } |
| 2336 | |
| 2337 /***************************************************************************** | |
| 2338 redisplay_output_window | |
| 2339 | |
| 2340 For the given window W, ensure that the current display lines are | |
| 2341 equal to the desired display lines, outputing changes as necessary. | |
| 2342 | |
| 2343 #### Fuck me. This just isn't going to cut it for tty's. The output | |
| 2344 decisions for them must be based on the contents of the entire frame | |
| 2345 because that is how the available output capabilities think. The | |
| 2346 solution is relatively simple. Create redisplay_output_frame. This | |
| 2347 will basically merge all of the separate window display structs into | |
| 2348 a single one for the frame. This combination structure will be able | |
| 2349 to be passed to the same output_display_line which works for windows | |
| 2350 on X frames and the right things will happen. It just takes time to | |
| 2351 do. | |
| 2352 ****************************************************************************/ | |
| 2353 void | |
| 2354 redisplay_output_window (struct window *w) | |
| 2355 { | |
| 2356 struct frame *f = XFRAME (w->frame); | |
| 2357 struct device *d = XDEVICE (f->device); | |
| 2358 | |
| 2359 display_line_dynarr *cdla = window_display_lines (w, CURRENT_DISP); | |
| 2360 display_line_dynarr *ddla = window_display_lines (w, DESIRED_DISP); | |
| 2361 | |
| 2362 int cdla_len = Dynarr_length (cdla); | |
| 2363 int ddla_len = Dynarr_length (ddla); | |
| 2364 | |
| 2365 int line; | |
| 2366 int need_to_clear_bottom = 0; | |
| 2367 int need_to_clear_start = -1; | |
| 2368 int need_to_clear_end = -1; | |
| 2369 | |
| 2370 /* Backgrounds may have changed or windows may have gone away | |
| 2371 leaving dividers lying around. */ | |
| 2372 if (f->faces_changed | |
| 2373 || f->windows_structure_changed | |
| 2374 || w->shadow_thickness_changed) | |
| 2375 need_to_clear_bottom = 1; | |
| 2376 | |
| 2377 /* The first thing we do is determine if we are going to need to | |
| 2378 clear the bottom of the window. We only need to do this if the | |
| 2379 bottom of the current display lines is below the bottom of the | |
| 2380 desired display lines. Note that the number of lines is | |
| 2381 irrelevant. Only the position matters. We also clear to the | |
| 2382 bottom of the window if the modeline has shifted position. */ | |
| 2383 /* #### We can't blindly not clear the bottom if f->clear is true | |
| 2384 since there might be a window-local background. However, for | |
| 2385 those cases where there isn't, clearing the end of the window in | |
| 2386 this case sucks. */ | |
| 2387 if (!need_to_clear_bottom) | |
| 2388 { | |
| 2389 struct display_line *cdl, *ddl; | |
| 2390 | |
| 2391 /* If the modeline has changed position or size, clear the bottom | |
| 2392 of the window. */ | |
| 2393 if (!need_to_clear_bottom) | |
| 2394 { | |
| 2395 cdl = ddl = 0; | |
| 2396 | |
| 2397 if (cdla_len) | |
| 2398 cdl = Dynarr_atp (cdla, 0); | |
| 2399 if (ddla_len) | |
| 2400 ddl = Dynarr_atp (ddla, 0); | |
| 2401 | |
| 2402 if (!cdl || !ddl) | |
| 2403 need_to_clear_bottom = 1; | |
| 2404 else if ((!cdl->modeline && ddl->modeline) | |
| 2405 || (cdl->modeline && !ddl->modeline)) | |
| 2406 need_to_clear_bottom = 1; | |
| 2407 else if (cdl->ypos != ddl->ypos || | |
| 2408 cdl->ascent != ddl->ascent || | |
| 2409 cdl->descent != ddl->descent || | |
| 2410 cdl->clip != ddl->clip) | |
| 2411 need_to_clear_bottom = 1; | |
| 2412 | |
| 2413 /* #### This kludge is to make sure the modeline shadows get | |
| 2414 redrawn if the modeline position shifts. */ | |
| 2415 if (need_to_clear_bottom) | |
| 2416 w->shadow_thickness_changed = 1; | |
| 2417 } | |
| 2418 | |
| 2419 if (!need_to_clear_bottom) | |
| 2420 { | |
| 2421 cdl = ddl = 0; | |
| 2422 | |
| 2423 if (cdla_len) | |
| 2424 cdl = Dynarr_atp (cdla, cdla_len - 1); | |
| 2425 if (ddla_len) | |
| 2426 ddl = Dynarr_atp (ddla, ddla_len - 1); | |
| 2427 | |
| 2428 if (!cdl || !ddl) | |
| 2429 need_to_clear_bottom = 1; | |
| 2430 else | |
| 2431 { | |
| 2432 int cdl_bottom, ddl_bottom; | |
| 2433 | |
| 2434 cdl_bottom = cdl->ypos + cdl->descent; | |
| 2435 ddl_bottom = ddl->ypos + ddl->descent; | |
| 2436 | |
| 2437 if (cdl_bottom > ddl_bottom) | |
| 2438 { | |
| 2439 need_to_clear_bottom = 1; | |
| 2440 need_to_clear_start = ddl_bottom; | |
| 2441 need_to_clear_end = cdl_bottom; | |
| 2442 } | |
| 2443 } | |
| 2444 } | |
| 2445 } | |
| 2446 | |
| 2447 /* Perform any output initialization. */ | |
| 442 | 2448 MAYBE_DEVMETH (d, window_output_begin, (w)); |
| 428 | 2449 |
| 2450 /* If the window's structure has changed clear the internal border | |
| 2451 above it if it is topmost (the function will check). */ | |
| 448 | 2452 if (f->windows_structure_changed || f->faces_changed) |
| 428 | 2453 redisplay_clear_top_of_window (w); |
| 2454 | |
| 2455 /* Output each line. */ | |
| 2456 for (line = 0; line < Dynarr_length (ddla); line++) | |
| 2457 { | |
| 2458 output_display_line (w, cdla, ddla, line, -1, -1); | |
| 2459 } | |
| 2460 | |
| 2461 /* If the number of display lines has shrunk, adjust. */ | |
| 2462 if (cdla_len > ddla_len) | |
| 2463 { | |
| 2464 Dynarr_length (cdla) = ddla_len; | |
| 2465 } | |
| 2466 | |
| 2467 /* Output a vertical divider between windows, if necessary. */ | |
| 2468 if (window_needs_vertical_divider (w) | |
| 2469 && (f->windows_structure_changed || f->clear)) | |
| 2470 { | |
| 442 | 2471 MAYBE_DEVMETH (d, output_vertical_divider, (w, f->windows_structure_changed)); |
| 428 | 2472 } |
| 2473 | |
| 2474 /* Clear the rest of the window, if necessary. */ | |
| 2475 if (need_to_clear_bottom) | |
| 2476 { | |
| 2477 redisplay_clear_bottom_of_window (w, ddla, need_to_clear_start, | |
| 2478 need_to_clear_end); | |
| 2479 } | |
| 2480 | |
| 2481 w->window_end_pos[CURRENT_DISP] = w->window_end_pos[DESIRED_DISP]; | |
| 2482 Fset_marker (w->start[CURRENT_DISP], | |
| 2483 make_int (marker_position (w->start[DESIRED_DISP])), | |
| 2484 w->buffer); | |
| 2485 Fset_marker (w->pointm[CURRENT_DISP], | |
| 2486 make_int (marker_position (w->pointm[DESIRED_DISP])), | |
| 2487 w->buffer); | |
| 2488 w->last_modified[CURRENT_DISP] = w->last_modified[DESIRED_DISP]; | |
| 2489 w->last_facechange[CURRENT_DISP] = w->last_facechange[DESIRED_DISP]; | |
| 2490 Fset_marker (w->last_start[CURRENT_DISP], | |
| 2491 Fmarker_position (w->last_start[DESIRED_DISP]), w->buffer); | |
| 2492 Fset_marker (w->last_point[CURRENT_DISP], | |
| 2493 Fmarker_position (w->last_point[DESIRED_DISP]), w->buffer); | |
| 2494 w->last_point_x[CURRENT_DISP] = w->last_point_x[DESIRED_DISP]; | |
| 2495 w->last_point_y[CURRENT_DISP] = w->last_point_y[DESIRED_DISP]; | |
| 2496 w->shadow_thickness_changed = 0; | |
| 2497 | |
| 2498 set_window_display_buffer (w, XBUFFER (w->buffer)); | |
| 2499 find_window_mirror (w)->truncate_win = window_truncation_on (w); | |
| 2500 | |
| 2501 /* Overkill on invalidating the cache. It is very bad for it to not | |
| 2502 get invalidated when it should be. */ | |
| 2503 INVALIDATE_DEVICE_PIXEL_TO_GLYPH_CACHE (d); | |
| 2504 | |
| 442 | 2505 redisplay_redraw_cursor (f, 0); |
| 2506 MAYBE_DEVMETH (d, window_output_end, (w)); | |
| 428 | 2507 |
| 2508 #ifdef HAVE_SCROLLBARS | |
| 2509 update_window_scrollbars (w, NULL, !MINI_WINDOW_P (w), 0); | |
| 2510 #endif | |
| 2511 } | |
| 2512 | |
| 2513 /***************************************************************************** | |
| 1318 | 2514 redisplay_redraw_exposed_window |
| 2515 | |
| 2516 Given a bounding box for an area that needs to be redrawn, determine | |
| 2517 what parts of what lines are contained within and re-output their | |
| 2518 contents. | |
| 2519 ****************************************************************************/ | |
| 2520 static void | |
| 2521 redisplay_redraw_exposed_window (struct window *w, int x, int y, int width, | |
| 2522 int height) | |
| 2523 { | |
| 2524 struct frame *f = XFRAME (w->frame); | |
| 2525 int line; | |
| 2526 int start_x, start_y, end_x, end_y; | |
| 2527 int orig_windows_structure_changed; | |
| 2528 | |
| 2529 display_line_dynarr *cdla = window_display_lines (w, CURRENT_DISP); | |
| 2530 | |
| 2531 if (!NILP (w->vchild)) | |
| 2532 { | |
| 2533 redisplay_redraw_exposed_windows (w->vchild, x, y, width, height); | |
| 2534 return; | |
| 2535 } | |
| 2536 else if (!NILP (w->hchild)) | |
| 2537 { | |
| 2538 redisplay_redraw_exposed_windows (w->hchild, x, y, width, height); | |
| 2539 return; | |
| 2540 } | |
| 2541 | |
| 2542 /* If the window doesn't intersect the exposed region, we're done here. */ | |
| 2543 if (x >= WINDOW_RIGHT (w) || (x + width) <= WINDOW_LEFT (w) | |
| 2544 || y >= WINDOW_BOTTOM (w) || (y + height) <= WINDOW_TOP (w)) | |
| 2545 { | |
| 2546 return; | |
| 2547 } | |
| 2548 else | |
| 2549 { | |
| 2550 start_x = max (WINDOW_LEFT (w), x); | |
| 2551 end_x = min (WINDOW_RIGHT (w), (x + width)); | |
| 2552 start_y = max (WINDOW_TOP (w), y); | |
| 2553 end_y = min (WINDOW_BOTTOM (w), y + height); | |
| 2554 | |
| 2555 /* We do this to make sure that the 3D modelines get redrawn if | |
| 4187 | 2556 they are in the exposed region. */ |
| 1318 | 2557 orig_windows_structure_changed = f->windows_structure_changed; |
| 2558 f->windows_structure_changed = 1; | |
| 2559 } | |
| 2560 | |
| 2561 /* #### Not in GTK or MS Windows. I think is because of toolbars, which | |
| 2562 are handled as widgets in GTK and MS Windows, but drawn ourselves in | |
| 2563 X. For the moment I'm leaving this in, if it causes problems we have | |
| 2564 some device method indicating whether we're drawing our own | |
| 2565 toolbars. */ | |
| 2566 redisplay_clear_top_of_window (w); | |
| 2567 if (window_needs_vertical_divider (w)) | |
| 2568 { | |
| 2569 FRAMEMETH (f, output_vertical_divider, (w, 0)); | |
| 2570 } | |
| 2571 | |
| 2572 for (line = 0; line < Dynarr_length (cdla); line++) | |
| 2573 { | |
| 2574 struct display_line *cdl = Dynarr_atp (cdla, line); | |
| 2575 int top_y = DISPLAY_LINE_YPOS (cdl); | |
| 2576 int bottom_y = DISPLAY_LINE_YPOS (cdl) + DISPLAY_LINE_HEIGHT (cdl); | |
| 2577 | |
| 2578 if (bottom_y >= start_y) | |
| 2579 { | |
| 2580 if (top_y > end_y) | |
| 2581 { | |
| 2582 if (line == 0) | |
| 2583 continue; | |
| 2584 else | |
| 2585 break; | |
| 2586 } | |
| 2587 else | |
| 2588 { | |
| 2589 output_display_line (w, 0, cdla, line, start_x, end_x); | |
| 2590 } | |
| 2591 } | |
| 2592 } | |
| 2593 | |
| 2594 f->windows_structure_changed = orig_windows_structure_changed; | |
| 2595 | |
| 2596 /* If there have never been any face cache_elements created, then this | |
| 2597 expose event doesn't actually have anything to do. */ | |
| 2598 if (Dynarr_largest (w->face_cachels)) | |
| 2599 redisplay_clear_bottom_of_window (w, cdla, start_y, end_y); | |
| 2600 | |
| 2601 #ifdef HAVE_SCROLLBARS | |
| 2602 MAYBE_FRAMEMETH (f, redisplay_deadbox, (w, x, y, width, height)); | |
| 2603 #endif | |
| 2604 } | |
| 2605 | |
| 2606 | |
| 2607 /***************************************************************************** | |
| 2608 redisplay_redraw_exposed_windows | |
| 2609 | |
| 2610 For each window beneath the given window in the window hierarchy, | |
| 2611 ensure that it is redrawn if necessary after an Expose event. | |
| 2612 ****************************************************************************/ | |
| 2613 static void | |
| 2614 redisplay_redraw_exposed_windows (Lisp_Object window, int x, int y, int width, | |
| 2615 int height) | |
| 2616 { | |
| 2617 for (; !NILP (window); window = XWINDOW (window)->next) | |
| 2618 redisplay_redraw_exposed_window (XWINDOW (window), x, y, width, height); | |
| 2619 } | |
| 2620 | |
| 2621 static void | |
| 2622 redisplay_redraw_exposed_area_1 (Lisp_Object arg) | |
| 2623 { | |
| 2624 assert (!in_display); | |
| 2625 redisplay_redraw_exposed_area (XFRAME (X1ST (arg)), | |
| 2626 XINT (X2ND (arg)), | |
| 2627 XINT (X3RD (arg)), | |
| 2628 XINT (X4TH (arg)), | |
| 2629 XINT (X5TH (arg))); | |
| 2630 free_list (arg); | |
| 2631 } | |
| 2632 | |
| 2633 /***************************************************************************** | |
| 2634 redisplay_redraw_exposed_area | |
| 2635 | |
| 2636 For each window on the given frame, ensure that any area in the | |
| 2637 Exposed area is redrawn. | |
| 2638 ****************************************************************************/ | |
| 2639 void | |
| 2640 redisplay_redraw_exposed_area (struct frame *f, int x, int y, int width, | |
| 2641 int height) | |
| 2642 { | |
| 2643 int depth; | |
| 2644 | |
| 2645 if (in_display) | |
| 2646 { | |
| 2647 /* Not safe to do it now, so delay it */ | |
| 2648 register_post_redisplay_action (redisplay_redraw_exposed_area_1, | |
| 2649 list5 (wrap_frame (f), make_int (x), | |
| 2650 make_int (y), make_int (width), | |
| 2651 make_int (height))); | |
| 2652 return; | |
| 2653 } | |
| 2654 | |
| 2655 depth = enter_redisplay_critical_section (); | |
| 2656 | |
| 2657 MAYBE_FRAMEMETH (f, frame_output_begin, (f)); | |
| 2658 | |
| 2659 /* If any window on the frame has had its face cache reset then the | |
| 2660 redisplay structures are effectively invalid. If we attempt to | |
| 2661 use them we'll blow up. We mark the frame as changed to ensure | |
| 2662 that redisplay will do a full update. This probably isn't | |
| 2663 necessary but it can't hurt. */ | |
| 2664 #ifdef HAVE_TOOLBARS | |
| 2665 /* #### We would rather put these off as well but there is currently | |
| 2666 no combination of flags which will force an unchanged toolbar to | |
| 2667 redraw anyhow. */ | |
| 2668 MAYBE_FRAMEMETH (f, redraw_exposed_toolbars, (f, x, y, width, height)); | |
| 2669 #endif | |
| 2670 redraw_exposed_gutters (f, x, y, width, height); | |
| 2671 | |
| 2672 if (!f->window_face_cache_reset) | |
| 2673 { | |
| 2674 redisplay_redraw_exposed_windows (f->root_window, x, y, width, height); | |
| 2675 /* #### Why not call this always? */ | |
| 2676 MAYBE_FRAMEMETH (f, frame_output_end, (f)); | |
| 2677 } | |
| 2678 else | |
| 2679 MARK_FRAME_CHANGED (f); | |
| 2680 | |
| 2681 exit_redisplay_critical_section (depth); | |
| 2682 } | |
| 2683 | |
| 2684 /***************************************************************************** | |
| 428 | 2685 bevel_modeline |
| 2686 | |
| 2687 Draw a 3d border around the modeline on window W. | |
| 2688 ****************************************************************************/ | |
| 2689 void | |
| 2690 bevel_modeline (struct window *w, struct display_line *dl) | |
| 2691 { | |
| 2692 struct frame *f = XFRAME (w->frame); | |
| 2693 struct device *d = XDEVICE (f->device); | |
| 2694 int x, y, width, height; | |
| 2695 int shadow_thickness = MODELINE_SHADOW_THICKNESS (w); | |
| 2696 enum edge_style style; | |
| 2697 | |
| 2698 x = WINDOW_MODELINE_LEFT (w); | |
| 2699 width = WINDOW_MODELINE_RIGHT (w) - x; | |
| 2700 y = dl->ypos - dl->ascent - shadow_thickness; | |
| 2701 height = dl->ascent + dl->descent + 2 * shadow_thickness; | |
| 2702 | |
| 2703 if (XINT (w->modeline_shadow_thickness) < 0) | |
| 2704 { | |
| 2705 style = EDGE_BEVEL_IN; | |
| 2706 } | |
| 2707 else | |
| 2708 { | |
| 2709 style = EDGE_BEVEL_OUT; | |
| 2710 } | |
| 2711 | |
| 434 | 2712 MAYBE_DEVMETH (d, bevel_area, |
| 428 | 2713 (w, MODELINE_INDEX, x, y, width, height, shadow_thickness, |
| 2714 EDGE_ALL, style)); | |
| 2715 } |