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annotate src/window.c @ 5103:4129013a3954
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| author | Ben Wing <ben@xemacs.org> |
|---|---|
| date | Fri, 05 Mar 2010 17:51:36 -0600 |
| parents | 0ca81354c4c7 |
| children | 7be849cb8828 |
| rev | line source |
|---|---|
| 428 | 1 /* Window creation, deletion and examination for XEmacs. |
| 2 Copyright (C) 1985-1987, 1992-1995 Free Software Foundation, Inc. | |
| 3 Copyright (C) 1994, 1995 Board of Trustees, University of Illinois. | |
| 5043 | 4 Copyright (C) 1995, 1996, 2002, 2010 Ben Wing. |
| 428 | 5 Copyright (C) 1996 Chuck Thompson. |
| 6 | |
| 7 This file is part of XEmacs. | |
| 8 | |
| 9 XEmacs is free software; you can redistribute it and/or modify it | |
| 10 under the terms of the GNU General Public License as published by the | |
| 11 Free Software Foundation; either version 2, or (at your option) any | |
| 12 later version. | |
| 13 | |
| 14 XEmacs is distributed in the hope that it will be useful, but WITHOUT | |
| 15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 17 for more details. | |
| 18 | |
| 19 You should have received a copy of the GNU General Public License | |
| 20 along with XEmacs; see the file COPYING. If not, write to | |
| 21 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
| 22 Boston, MA 02111-1307, USA. */ | |
| 23 | |
| 24 /* Synched up with: FSF 19.30. */ | |
| 25 /* Beginning to diverge significantly. */ | |
| 26 | |
| 853 | 27 /* Authorship: |
| 28 | |
| 29 Based on code from pre-release FSF 19, c. 1991. | |
| 30 Significantly reworked by Chuck Thompson, 1993-1996. | |
| 31 window mirror stuff added by Chuck Thompson c. 1993. | |
| 32 various cleanup by Ben Wing c. 1995 (window slots, window init code, | |
| 33 memory usage, synch. up to FSF 19.30, other). | |
| 34 Unknown work by Andy Piper. | |
| 35 new window-width/height fns. by Ben Wing, Mar 2000. */ | |
| 36 | |
| 428 | 37 /* This file has been Mule-ized. */ |
| 38 | |
| 39 #include <config.h> | |
| 40 #include "lisp.h" | |
| 41 | |
| 42 #include "buffer.h" | |
| 800 | 43 #include "commands.h" |
| 872 | 44 #include "device-impl.h" |
| 800 | 45 #include "elhash.h" |
| 428 | 46 #include "faces.h" |
| 872 | 47 #include "frame-impl.h" |
| 800 | 48 #include "glyphs.h" |
| 49 #include "gutter.h" | |
| 428 | 50 #include "objects.h" |
| 51 #include "redisplay.h" | |
| 872 | 52 #include "window-impl.h" |
| 428 | 53 |
| 1149 | 54 Lisp_Object Qwindowp, Qwindow_live_p; |
| 428 | 55 Lisp_Object Qdisplay_buffer; |
| 56 | |
| 57 #ifdef MEMORY_USAGE_STATS | |
| 58 Lisp_Object Qface_cache, Qglyph_cache, Qline_start_cache, Qother_redisplay; | |
| 59 #ifdef HAVE_SCROLLBARS | |
| 60 Lisp_Object Qscrollbar_instances; | |
| 61 #endif | |
| 62 #endif | |
| 63 | |
| 1979 | 64 extern int allow_deletion_of_last_visible_frame; |
| 65 | |
| 428 | 66 EXFUN (Fnext_window, 4); |
| 67 | |
| 68 static int window_pixel_width_to_char_width (struct window *w, | |
| 69 int pixel_width, | |
| 70 int include_margins_p); | |
| 71 static int window_char_width_to_pixel_width (struct window *w, | |
| 72 int char_width, | |
| 73 int include_margins_p); | |
| 74 static int window_pixel_height_to_char_height (struct window *w, | |
| 75 int pixel_height, | |
| 76 int include_gutters_p); | |
| 77 static int window_char_height_to_pixel_height (struct window *w, | |
| 78 int char_height, | |
| 79 int include_gutters_p); | |
| 444 | 80 static void change_window_height (Lisp_Object window, int delta, |
| 81 Lisp_Object horizontalp, int inpixels); | |
| 428 | 82 |
| 83 /* Thickness of shadow border around 3d modelines. */ | |
| 84 Lisp_Object Vmodeline_shadow_thickness; | |
| 85 | |
| 86 /* Whether vertical dividers are draggable and displayed */ | |
| 87 Lisp_Object Vvertical_divider_always_visible_p; | |
| 88 | |
| 89 /* Whether a modeline should be displayed. */ | |
| 90 Lisp_Object Vhas_modeline_p; | |
| 91 | |
| 92 /* Thickness of shadow border around vertical dividers. */ | |
| 93 Lisp_Object Vvertical_divider_shadow_thickness; | |
| 94 | |
| 95 /* Divider surface width (not counting 3-d borders) */ | |
| 96 Lisp_Object Vvertical_divider_line_width; | |
| 97 | |
| 442 | 98 /* Spacing between outer edge of divider border and window edge */ |
| 428 | 99 Lisp_Object Vvertical_divider_spacing; |
| 100 | |
| 101 /* How much to scroll by per-line. */ | |
| 102 Lisp_Object Vwindow_pixel_scroll_increment; | |
| 103 | |
| 104 /* Scroll if point lands on the bottom line and that line is partially | |
| 105 clipped. */ | |
| 106 int scroll_on_clipped_lines; | |
| 107 | |
| 108 /* The minibuffer window of the selected frame. | |
| 109 Note that you cannot test for minibufferness of an arbitrary window | |
| 110 by comparing against this; but you can test for minibufferness of | |
| 111 the selected window. */ | |
| 112 Lisp_Object minibuf_window; | |
| 113 | |
| 114 /* Non-nil means it is the window for C-M-v to scroll | |
| 115 when the minibuffer is selected. */ | |
| 116 Lisp_Object Vminibuffer_scroll_window; | |
| 117 | |
| 118 /* Non-nil means this is the buffer whose window C-M-v should scroll. */ | |
| 119 Lisp_Object Vother_window_scroll_buffer; | |
| 120 | |
| 121 /* Non-nil means it's the function to call to display temp buffers. */ | |
| 122 Lisp_Object Vtemp_buffer_show_function; | |
| 123 | |
| 124 /* If a window gets smaller than either of these, it is removed. */ | |
| 458 | 125 Fixnum window_min_height; |
| 126 Fixnum window_min_width; | |
| 428 | 127 |
| 128 /* Number of lines of continuity in scrolling by screenfuls. */ | |
| 458 | 129 Fixnum next_screen_context_lines; |
| 428 | 130 |
| 1149 | 131 Lisp_Object Qcurrent_window_configuration, Qset_window_configuration; |
| 428 | 132 |
| 707 | 133 Lisp_Object Qtruncate_partial_width_windows; |
| 134 | |
| 428 | 135 #define SET_LAST_MODIFIED(w, cache_too) \ |
| 136 do { \ | |
| 137 (w)->last_modified[CURRENT_DISP] = Qzero; \ | |
| 138 (w)->last_modified[DESIRED_DISP] = Qzero; \ | |
| 139 (w)->last_modified[CMOTION_DISP] = Qzero; \ | |
| 140 if (cache_too) \ | |
| 141 (w)->line_cache_last_updated = Qzero; \ | |
| 142 } while (0) | |
| 143 | |
| 144 #define SET_LAST_FACECHANGE(w) \ | |
| 145 do { \ | |
| 146 (w)->last_facechange[CURRENT_DISP] = Qzero; \ | |
| 147 (w)->last_facechange[DESIRED_DISP] = Qzero; \ | |
| 148 (w)->last_facechange[CMOTION_DISP] = Qzero; \ | |
| 149 } while (0) | |
| 150 | |
| 151 | |
| 1204 | 152 |
| 153 static const struct memory_description int_description_1[] = { | |
| 154 { XD_END } | |
| 155 }; | |
| 156 | |
| 157 static const struct sized_memory_description int_description = { | |
| 158 sizeof (int), | |
| 159 int_description_1 | |
| 160 }; | |
| 161 | |
| 162 static const struct memory_description int_dynarr_description_1[] = { | |
| 163 XD_DYNARR_DESC (int_dynarr, &int_description), | |
| 164 { XD_END } | |
| 165 }; | |
| 166 | |
| 167 static const struct sized_memory_description int_dynarr_description = { | |
| 168 sizeof (int_dynarr), | |
| 169 int_dynarr_description_1 | |
| 170 }; | |
| 171 | |
| 172 static const struct memory_description face_cachel_description_1[] = { | |
| 2367 | 173 { XD_BLOCK_PTR, offsetof (face_cachel, merged_faces), |
| 2551 | 174 1, { &int_dynarr_description } }, |
| 1204 | 175 { XD_LISP_OBJECT, offsetof (face_cachel, face) }, |
| 176 { XD_LISP_OBJECT, offsetof (face_cachel, foreground) }, | |
| 177 { XD_LISP_OBJECT, offsetof (face_cachel, background) }, | |
| 178 { XD_LISP_OBJECT_ARRAY, offsetof (face_cachel, font), NUM_LEADING_BYTES }, | |
| 179 { XD_LISP_OBJECT, offsetof (face_cachel, display_table) }, | |
| 180 { XD_LISP_OBJECT, offsetof (face_cachel, background_pixmap) }, | |
| 181 { XD_END } | |
| 182 }; | |
| 183 | |
| 3092 | 184 #ifdef NEW_GC |
| 185 DEFINE_LRECORD_IMPLEMENTATION ("face-cachel", face_cachel, | |
| 186 1, /*dumpable-flag*/ | |
| 187 0, 0, 0, 0, 0, | |
| 188 face_cachel_description_1, | |
| 189 Lisp_Face_Cachel); | |
| 190 #endif /* NEW_GC */ | |
| 191 | |
| 1204 | 192 static const struct sized_memory_description face_cachel_description = { |
| 193 sizeof (face_cachel), | |
| 194 face_cachel_description_1 | |
| 195 }; | |
| 196 | |
| 197 static const struct memory_description face_cachel_dynarr_description_1[] = { | |
| 3092 | 198 #ifdef NEW_GC |
| 199 XD_LISP_DYNARR_DESC (face_cachel_dynarr, &face_cachel_description), | |
| 200 #else /* not NEW_GC */ | |
| 1204 | 201 XD_DYNARR_DESC (face_cachel_dynarr, &face_cachel_description), |
| 3092 | 202 #endif /* not NEW_GC */ |
| 1204 | 203 { XD_END } |
| 204 }; | |
| 205 | |
| 3092 | 206 #ifdef NEW_GC |
| 207 DEFINE_LRECORD_IMPLEMENTATION ("face-cachel-dynarr", face_cachel_dynarr, | |
| 208 1, /*dumpable-flag*/ | |
| 209 0, 0, 0, 0, 0, | |
| 210 face_cachel_dynarr_description_1, | |
| 211 face_cachel_dynarr); | |
| 212 #else /* not NEW_GC */ | |
| 1204 | 213 static const struct sized_memory_description face_cachel_dynarr_description = { |
| 214 sizeof (face_cachel_dynarr), | |
| 215 face_cachel_dynarr_description_1 | |
| 216 }; | |
| 3092 | 217 #endif /* not NEW_GC */ |
| 1204 | 218 |
| 219 static const struct memory_description glyph_cachel_description_1[] = { | |
| 220 { XD_LISP_OBJECT, offsetof (glyph_cachel, glyph) }, | |
| 221 { XD_END } | |
| 222 }; | |
| 223 | |
| 3092 | 224 #ifdef NEW_GC |
| 225 DEFINE_LRECORD_IMPLEMENTATION ("glyph-cachel", glyph_cachel, | |
| 226 1, /*dumpable-flag*/ | |
| 227 0, 0, 0, 0, 0, | |
| 228 glyph_cachel_description_1, | |
| 229 Lisp_Glyph_Cachel); | |
| 230 #endif /* NEW_GC */ | |
| 231 | |
| 1204 | 232 static const struct sized_memory_description glyph_cachel_description = { |
| 233 sizeof (glyph_cachel), | |
| 234 glyph_cachel_description_1 | |
| 235 }; | |
| 236 | |
| 237 static const struct memory_description glyph_cachel_dynarr_description_1[] = { | |
| 3092 | 238 #ifdef NEW_GC |
| 239 XD_LISP_DYNARR_DESC (glyph_cachel_dynarr, &glyph_cachel_description), | |
| 240 #else /* not NEW_GC */ | |
| 1204 | 241 XD_DYNARR_DESC (glyph_cachel_dynarr, &glyph_cachel_description), |
| 3092 | 242 #endif /* not NEW_GC */ |
| 1204 | 243 { XD_END } |
| 244 }; | |
| 245 | |
| 3092 | 246 #ifdef NEW_GC |
| 247 DEFINE_LRECORD_IMPLEMENTATION ("glyph-cachel-dynarr", glyph_cachel_dynarr, | |
| 248 1, /*dumpable-flag*/ | |
| 249 0, 0, 0, 0, 0, | |
| 250 glyph_cachel_dynarr_description_1, | |
| 251 glyph_cachel_dynarr); | |
| 252 #else /* not NEW_GC */ | |
| 1204 | 253 static const struct sized_memory_description glyph_cachel_dynarr_description = { |
| 254 sizeof (glyph_cachel_dynarr), | |
| 255 glyph_cachel_dynarr_description_1 | |
| 256 }; | |
| 3092 | 257 #endif /* not NEW_GC */ |
| 1204 | 258 |
| 259 static const struct memory_description line_start_cache_description_1[] = { | |
| 260 { XD_END } | |
| 261 }; | |
| 262 | |
| 263 static const struct sized_memory_description line_start_cache_description = { | |
| 264 sizeof (line_start_cache), | |
| 265 line_start_cache_description_1 | |
| 266 }; | |
| 267 | |
| 268 static const struct memory_description line_start_cache_dynarr_description_1[] = { | |
| 269 XD_DYNARR_DESC (line_start_cache_dynarr, &line_start_cache_description), | |
| 270 { XD_END } | |
| 271 }; | |
| 272 | |
| 273 static const struct sized_memory_description line_start_cache_dynarr_description = { | |
| 274 sizeof (line_start_cache_dynarr), | |
| 275 line_start_cache_dynarr_description_1 | |
| 276 }; | |
| 277 | |
| 278 static const struct memory_description window_description [] = { | |
| 279 #define WINDOW_SLOT(slot) { XD_LISP_OBJECT, offsetof (struct window, slot) }, | |
| 280 #define WINDOW_SLOT_ARRAY(slot, size) \ | |
| 281 { XD_LISP_OBJECT_ARRAY, offsetof (struct window, slot), size }, | |
| 282 #include "winslots.h" | |
| 283 | |
| 3092 | 284 #ifdef NEW_GC |
| 285 { XD_LISP_OBJECT, offsetof (struct window, face_cachels) }, | |
| 286 { XD_LISP_OBJECT, offsetof (struct window, glyph_cachels) }, | |
| 287 #else /* not NEW_GC */ | |
| 2367 | 288 { XD_BLOCK_PTR, offsetof (struct window, face_cachels), |
| 2551 | 289 1, { &face_cachel_dynarr_description } }, |
| 2367 | 290 { XD_BLOCK_PTR, offsetof (struct window, glyph_cachels), |
| 2551 | 291 1, { &glyph_cachel_dynarr_description } }, |
| 3092 | 292 #endif /* not NEW_GC */ |
| 2367 | 293 { XD_BLOCK_PTR, offsetof (struct window, line_start_cache), |
| 2775 | 294 1, { &line_start_cache_dynarr_description }, XD_FLAG_NO_KKCC }, |
| 1204 | 295 { XD_END } |
| 296 }; | |
| 428 | 297 |
| 298 static Lisp_Object | |
| 299 mark_window (Lisp_Object obj) | |
| 300 { | |
| 301 struct window *window = XWINDOW (obj); | |
| 302 | |
| 303 mark_face_cachels (window->face_cachels); | |
| 304 mark_glyph_cachels (window->glyph_cachels); | |
| 305 | |
| 617 | 306 #define WINDOW_SLOT(slot) mark_object (window->slot); |
| 428 | 307 #include "winslots.h" |
| 308 | |
| 309 return Qnil; | |
| 310 } | |
| 311 | |
| 312 static void | |
| 2286 | 313 print_window (Lisp_Object obj, Lisp_Object printcharfun, |
| 314 int UNUSED (escapeflag)) | |
| 428 | 315 { |
| 4846 | 316 Lisp_Object buf; |
| 317 | |
| 428 | 318 if (print_readably) |
| 4846 | 319 printing_unreadable_lcrecord (obj, 0); |
| 428 | 320 |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4932
diff
changeset
|
321 write_ascstring (printcharfun, "#<window"); |
| 4846 | 322 buf = XWINDOW_BUFFER (obj); |
| 323 if (EQ (buf, Qt)) | |
|
4952
19a72041c5ed
Mule-izing, various fixes related to char * arguments
Ben Wing <ben@xemacs.org>
parents:
4932
diff
changeset
|
324 write_ascstring (printcharfun, " during creation"); |
| 4846 | 325 else if (!NILP (buf)) |
| 428 | 326 { |
| 4846 | 327 |
| 328 Lisp_Object name = XBUFFER (buf)->name; | |
| 800 | 329 write_fmt_string_lisp (printcharfun, " on %S", 1, name); |
| 428 | 330 } |
| 800 | 331 write_fmt_string (printcharfun, " 0x%x>", XWINDOW (obj)->header.uid); |
| 428 | 332 } |
| 333 | |
| 334 static void | |
| 2286 | 335 finalize_window (void *header, int UNUSED (for_disksave)) |
| 428 | 336 { |
| 337 struct window *w = (struct window *) header; | |
| 338 | |
| 339 if (w->line_start_cache) | |
| 340 { | |
| 341 Dynarr_free (w->line_start_cache); | |
| 342 w->line_start_cache = 0; | |
| 343 } | |
| 344 | |
| 345 if (w->face_cachels) | |
| 346 { | |
| 347 int i; | |
| 348 | |
| 349 for (i = 0; i < Dynarr_length (w->face_cachels); i++) | |
| 350 { | |
| 351 struct face_cachel *cachel = Dynarr_atp (w->face_cachels, i); | |
| 352 if (cachel->merged_faces) | |
| 353 { | |
| 354 Dynarr_free (cachel->merged_faces); | |
| 355 cachel->merged_faces = 0; | |
| 356 } | |
| 357 } | |
| 358 Dynarr_free (w->face_cachels); | |
| 359 w->face_cachels = 0; | |
| 360 } | |
| 361 | |
| 362 if (w->glyph_cachels) | |
| 363 { | |
| 364 Dynarr_free (w->glyph_cachels); | |
| 365 w->glyph_cachels = 0; | |
| 366 } | |
| 367 } | |
| 368 | |
| 844 | 369 /* These caches map buffers to markers. They are key-weak so that entries |
| 370 remain around as long as the buffers do. */ | |
| 371 | |
| 372 static Lisp_Object | |
| 373 make_saved_buffer_point_cache (void) | |
| 374 { | |
| 375 return make_lisp_hash_table (20, HASH_TABLE_KEY_WEAK, HASH_TABLE_EQ); | |
| 376 } | |
| 377 | |
| 934 | 378 DEFINE_LRECORD_IMPLEMENTATION ("window", window, |
| 379 0, /*dumpable-flag*/ | |
| 380 mark_window, print_window, finalize_window, | |
| 1204 | 381 0, 0, window_description, struct window); |
| 428 | 382 |
| 383 #define INIT_DISP_VARIABLE(field, initialization) \ | |
| 384 p->field[CURRENT_DISP] = initialization; \ | |
| 385 p->field[DESIRED_DISP] = initialization; \ | |
| 386 p->field[CMOTION_DISP] = initialization; | |
| 387 | |
| 388 /* We have an implicit assertion that the first two elements (default | |
| 389 and modeline faces) are always present in the face_element_cache. | |
| 390 Normally redisplay ensures this. However, it is possible for a | |
| 391 window to get created and functions which reference these values | |
| 392 called before redisplay works with the window for the first time. | |
| 393 All callers of allocate_window should therefore call | |
| 394 reset_face_cachels on the created window. We can't do it | |
| 395 here because the window must have its frame pointer set or | |
| 396 reset_face_cachels will fail. */ | |
| 397 Lisp_Object | |
| 398 allocate_window (void) | |
| 399 { | |
| 3017 | 400 struct window *p = ALLOC_LCRECORD_TYPE (struct window, &lrecord_window); |
| 1204 | 401 Lisp_Object val = wrap_window (p); |
| 617 | 402 |
| 403 #define WINDOW_SLOT(slot) p->slot = Qnil; | |
| 404 #include "winslots.h" | |
| 405 | |
| 428 | 406 INIT_DISP_VARIABLE (start, Fmake_marker ()); |
| 407 INIT_DISP_VARIABLE (pointm, Fmake_marker ()); | |
| 408 p->sb_point = Fmake_marker (); | |
| 844 | 409 p->saved_point_cache = make_saved_buffer_point_cache (); |
| 410 p->saved_last_window_start_cache = make_saved_buffer_point_cache (); | |
| 428 | 411 p->use_time = Qzero; |
| 412 INIT_DISP_VARIABLE (last_modified, Qzero); | |
| 413 INIT_DISP_VARIABLE (last_point, Fmake_marker ()); | |
| 414 INIT_DISP_VARIABLE (last_start, Fmake_marker ()); | |
| 415 INIT_DISP_VARIABLE (last_facechange, Qzero); | |
| 3092 | 416 #ifdef NEW_GC |
| 417 p->face_cachels = Dynarr_lisp_new (face_cachel, | |
| 418 &lrecord_face_cachel_dynarr, | |
| 419 &lrecord_face_cachel); | |
| 420 p->glyph_cachels = Dynarr_lisp_new (glyph_cachel, | |
| 421 &lrecord_glyph_cachel_dynarr, | |
| 422 &lrecord_glyph_cachel); | |
| 423 #else /* not NEW_GC */ | |
| 428 | 424 p->face_cachels = Dynarr_new (face_cachel); |
| 425 p->glyph_cachels = Dynarr_new (glyph_cachel); | |
| 3092 | 426 #endif /* not NEW_GC */ |
| 428 | 427 p->line_start_cache = Dynarr_new (line_start_cache); |
| 450 | 428 p->subwindow_instance_cache = make_image_instance_cache_hash_table (); |
| 429 | |
| 428 | 430 p->line_cache_last_updated = Qzero; |
| 442 | 431 |
| 428 | 432 p->windows_changed = 1; |
| 433 p->shadow_thickness_changed = 1; | |
| 434 | |
| 435 return val; | |
| 436 } | |
| 437 #undef INIT_DISP_VARIABLE | |
| 438 | |
| 617 | 439 /************************************************************************/ |
| 440 /* Window mirror structure */ | |
| 441 /************************************************************************/ | |
| 442 | |
| 428 | 443 /* |
| 444 * The redisplay structures used to be stored with each window. While | |
| 445 * they are logically something associated with frames they can't be | |
| 446 * stored there with a redisplay which handles variable height lines. | |
| 447 * Lines in horizontally split windows might not line up. So they get | |
| 448 * stored with the windows. | |
| 449 * | |
| 450 * The problem with this is window configurations. When restoring a | |
| 451 * window configuration it now becomes problematic to do an | |
| 452 * incremental redisplay. The solution is to store the redisplay | |
| 453 * structures with the frame as they should be but laid out in the | |
| 454 * same manner as the window structure. Thus is born the window | |
| 455 * mirror. | |
| 456 * | |
| 457 * It also becomes a convenient place to stick scrollbar instances | |
| 458 * since they extrapolate out to having the same problem described for | |
| 459 * the display structures. | |
| 460 */ | |
| 461 | |
| 617 | 462 /* NOTE: The window-mirror structure formerly was not a Lisp object, and |
| 463 marking was handled specially. I've gotten recurring crashes, however, | |
| 464 using the mouse wheel under Windows, where either the window mirror | |
| 465 accessed through a scrollbar instance, or the frame pointed to by that | |
| 466 window mirror, gets garbaged. Things are tricky under windows because | |
| 467 the scrollbar instances are stored in HWND-specific data. Furthermore, | |
| 468 we have scrollbar-instance caches to complicate things. Both of these | |
| 469 make it very difficult (for me at least, not being intimately familiar | |
| 470 with the redisplay code) to track exactly when and where a particular | |
| 471 window mirror or scrollbar instance has pointers to it, or whether a | |
| 472 window mirror might have a dead frame or buffer in it (i.e. not | |
| 473 necessarily gc-protected by being on a global list). By far the safest | |
| 474 thing, then, is to make both structures Lisp objects and not explicitly | |
| 475 xfree() them. This should make no practical difference in memory usage | |
| 476 because neither structure is created very often (only when windows are | |
| 477 created or deleted). --ben */ | |
| 478 | |
| 1204 | 479 static const struct memory_description window_mirror_description [] = { |
| 480 { XD_LISP_OBJECT, offsetof (struct window_mirror, frame) }, | |
| 481 { XD_LISP_OBJECT, offsetof (struct window_mirror, next) }, | |
| 482 { XD_LISP_OBJECT, offsetof (struct window_mirror, hchild) }, | |
| 483 { XD_LISP_OBJECT, offsetof (struct window_mirror, vchild) }, | |
| 484 | |
| 2367 | 485 { XD_BLOCK_PTR, offsetof (struct window_mirror, current_display_lines), |
| 2551 | 486 1, { &display_line_dynarr_description } }, |
| 2367 | 487 { XD_BLOCK_PTR, offsetof (struct window_mirror, desired_display_lines), |
| 2551 | 488 1, { &display_line_dynarr_description } }, |
| 1204 | 489 |
| 490 { XD_LISP_OBJECT, offsetof (struct window_mirror, buffer) }, | |
| 491 | |
| 492 #ifdef HAVE_SCROLLBARS | |
| 493 { XD_LISP_OBJECT, offsetof (struct window_mirror, | |
| 494 scrollbar_vertical_instance) }, | |
| 495 { XD_LISP_OBJECT, offsetof (struct window_mirror, | |
| 496 scrollbar_horizontal_instance) }, | |
| 497 #endif /* HAVE_SCROLLBARS */ | |
| 498 | |
| 934 | 499 { XD_END } |
| 500 }; | |
| 501 | |
| 617 | 502 static Lisp_Object |
| 503 mark_window_mirror (Lisp_Object obj) | |
| 504 { | |
| 505 struct window_mirror *mir = XWINDOW_MIRROR (obj); | |
| 506 | |
| 507 if (mir->current_display_lines) | |
| 508 mark_redisplay_structs (mir->current_display_lines); | |
| 509 if (mir->desired_display_lines) | |
| 510 mark_redisplay_structs (mir->desired_display_lines); | |
| 511 | |
| 512 if (mir->hchild) | |
| 513 mark_object (wrap_window_mirror (mir->hchild)); | |
| 514 if (mir->vchild) | |
| 515 mark_object (wrap_window_mirror (mir->vchild)); | |
| 516 | |
| 517 if (mir->frame) | |
| 518 mark_object (wrap_frame (mir->frame)); | |
| 519 if (mir->buffer) | |
| 520 mark_object (wrap_buffer (mir->buffer)); | |
| 521 | |
| 522 #ifdef HAVE_SCROLLBARS | |
| 523 if (mir->scrollbar_vertical_instance) | |
| 524 mark_object (wrap_scrollbar_instance (mir->scrollbar_vertical_instance)); | |
| 525 if (mir->scrollbar_horizontal_instance) | |
| 526 mark_object (wrap_scrollbar_instance (mir->scrollbar_horizontal_instance)); | |
| 527 #endif /* HAVE_SCROLLBARS */ | |
| 528 if (mir->next) | |
| 529 return wrap_window_mirror (mir->next); | |
| 530 else | |
| 531 return Qnil; | |
| 532 } | |
| 533 | |
| 934 | 534 DEFINE_LRECORD_IMPLEMENTATION ("window-mirror", window_mirror, |
| 535 0, /*dumpable-flag*/ | |
| 536 mark_window_mirror, internal_object_printer, | |
| 1204 | 537 0, 0, 0, window_mirror_description, |
| 538 struct window_mirror); | |
| 617 | 539 |
| 428 | 540 /* Create a new window mirror structure and associated redisplay |
| 541 structs. */ | |
| 542 static struct window_mirror * | |
| 543 new_window_mirror (struct frame *f) | |
| 544 { | |
| 617 | 545 struct window_mirror *t = |
| 3017 | 546 ALLOC_LCRECORD_TYPE (struct window_mirror, &lrecord_window_mirror); |
| 428 | 547 |
| 548 t->frame = f; | |
| 549 t->current_display_lines = Dynarr_new (display_line); | |
| 550 t->desired_display_lines = Dynarr_new (display_line); | |
| 551 | |
| 552 return t; | |
| 553 } | |
| 554 | |
| 555 /* Synchronize the mirror structure with a given window structure. | |
| 556 This is normally called from update_frame_window_mirror with a | |
| 557 starting window of f->root_window. */ | |
| 558 static struct window_mirror * | |
| 559 update_mirror_internal (Lisp_Object win, struct window_mirror *mir) | |
| 560 { | |
| 561 if (NILP (win)) | |
| 562 { | |
| 563 if (mir) | |
| 564 { | |
| 565 free_window_mirror (mir); | |
| 566 mir = NULL; | |
| 567 } | |
| 568 return mir; | |
| 569 } | |
| 570 else | |
| 571 if (!mir) | |
| 572 mir = new_window_mirror (XFRAME (XWINDOW (win)->frame)); | |
| 573 | |
| 1204 | 574 mir->next = update_mirror_internal (XWINDOW (win)->next, mir->next); |
| 428 | 575 mir->hchild = update_mirror_internal (XWINDOW (win)->hchild, mir->hchild); |
| 576 mir->vchild = update_mirror_internal (XWINDOW (win)->vchild, mir->vchild); | |
| 577 | |
| 578 /* | |
| 579 * If the redisplay structs are not empty and the mirror has | |
| 580 * children, then this mirror structure was formerly being used for | |
| 581 * display but is no longer. Reset its current display structs so | |
| 582 * that redisplay doesn't accidentally think they are accurate if it | |
| 583 * is later used for display purposes once again. Also, mark the | |
| 584 * scrollbar instance as not active. | |
| 585 */ | |
| 586 if (mir->vchild || mir->hchild) | |
| 587 { | |
| 588 /* The redisplay structures are big. Leaving them around in | |
| 589 non-leaf windows can add up to a lot of wasted space. So | |
| 590 don't do it. */ | |
| 591 free_display_structs (mir); | |
| 592 mir->current_display_lines = Dynarr_new (display_line); | |
| 593 mir->desired_display_lines = Dynarr_new (display_line); | |
| 594 | |
| 595 #ifdef HAVE_SCROLLBARS | |
| 596 update_window_scrollbars (XWINDOW (win), mir, 0, 0); | |
| 597 #endif | |
| 598 mir->buffer = NULL; | |
| 599 } | |
| 600 | |
| 601 return mir; | |
| 602 } | |
| 603 | |
| 604 /* Given a window mirror, determine which real window it contains the | |
| 605 redisplay structures for. */ | |
| 606 static Lisp_Object | |
| 607 real_window_internal (Lisp_Object win, struct window_mirror *rmir, | |
| 608 struct window_mirror *mir) | |
| 609 { | |
| 610 for (; !NILP (win) && rmir ; win = XWINDOW (win)->next, rmir = rmir->next) | |
| 611 { | |
| 612 if (mir == rmir) | |
| 613 return win; | |
| 614 if (!NILP (XWINDOW (win)->vchild)) | |
| 615 { | |
| 616 Lisp_Object retval = | |
| 617 real_window_internal (XWINDOW (win)->vchild, rmir->vchild, mir); | |
| 618 if (!NILP (retval)) | |
| 619 return retval; | |
| 620 } | |
| 621 if (!NILP (XWINDOW (win)->hchild)) | |
| 622 { | |
| 623 Lisp_Object retval = | |
| 624 real_window_internal (XWINDOW (win)->hchild, rmir->hchild, mir); | |
| 625 if (!NILP (retval)) | |
| 626 return retval; | |
| 627 } | |
| 628 } | |
| 629 | |
| 630 return Qnil; | |
| 631 } | |
| 632 | |
| 633 /* Given a real window, find the mirror structure which contains its | |
| 634 redisplay structures. */ | |
| 635 static struct window_mirror * | |
| 636 find_window_mirror_internal (Lisp_Object win, struct window_mirror *rmir, | |
| 637 struct window *w) | |
| 638 { | |
| 639 for (; !NILP (win); win = XWINDOW (win)->next, rmir = rmir->next) | |
| 640 { | |
| 641 if (w == XWINDOW (win)) | |
| 642 return rmir; | |
| 643 | |
| 644 if (!NILP (XWINDOW (win)->vchild)) | |
| 645 { | |
| 646 struct window_mirror *retval = | |
| 647 find_window_mirror_internal (XWINDOW (win)->vchild, | |
| 648 rmir->vchild, w); | |
| 649 if (retval) return retval; | |
| 650 } | |
| 651 | |
| 652 if (!NILP (XWINDOW (win)->hchild)) | |
| 653 { | |
| 654 struct window_mirror *retval = | |
| 655 find_window_mirror_internal (XWINDOW (win)->hchild, | |
| 656 rmir->hchild, w); | |
| 657 if (retval) return retval; | |
| 658 } | |
| 659 } | |
| 660 | |
| 661 return 0; | |
| 662 } | |
| 663 | |
| 664 /* Update the mirror structure for the given frame. */ | |
| 665 void | |
| 666 update_frame_window_mirror (struct frame *f) | |
| 667 { | |
| 617 | 668 f->root_mirror = |
| 669 wrap_window_mirror (update_mirror_internal | |
| 670 (f->root_window, | |
| 671 NILP (f->root_mirror) ? 0 : | |
| 672 XWINDOW_MIRROR (f->root_mirror))); | |
| 428 | 673 f->mirror_dirty = 0; |
| 674 } | |
| 675 | |
| 676 /* Free a given mirror structure along with all of its children as | |
| 677 well as their associated display structures. */ | |
| 678 void | |
| 679 free_window_mirror (struct window_mirror *mir) | |
| 680 { | |
| 681 while (mir) | |
| 682 { | |
| 683 if (mir->hchild) free_window_mirror (mir->hchild); | |
| 684 if (mir->vchild) free_window_mirror (mir->vchild); | |
| 685 #ifdef HAVE_SCROLLBARS | |
| 686 release_window_mirror_scrollbars (mir); | |
| 687 #endif | |
| 688 free_display_structs (mir); | |
| 689 mir = mir->next; | |
| 617 | 690 /* not worth calling free_managed_lcrecord() -- window mirrors |
| 691 are not created that frequently and it's dangerous. we don't | |
| 692 know for sure that there aren't other pointers around -- e.g. | |
| 693 in a scrollbar instance. */ | |
| 428 | 694 } |
| 695 } | |
| 696 | |
| 697 /* Given a mirror structure, return the window it mirrors. Calls | |
| 698 real_window_internal to do most of the work. */ | |
| 699 Lisp_Object | |
| 700 real_window (struct window_mirror *mir, int no_abort) | |
| 701 { | |
| 617 | 702 Lisp_Object retval = |
| 703 real_window_internal (mir->frame->root_window, | |
| 704 XWINDOW_MIRROR (mir->frame->root_mirror), mir); | |
|
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parents:
4967
diff
changeset
|
705 assert (!NILP (retval) || no_abort); |
| 428 | 706 |
| 707 return retval; | |
| 708 } | |
| 709 | |
| 710 /* Given a real window, return its mirror structure. Calls | |
| 711 find_window_mirror_internal to do all of the work. */ | |
| 712 struct window_mirror * | |
| 713 find_window_mirror (struct window *w) | |
| 714 { | |
| 715 struct frame *f = XFRAME (w->frame); | |
| 716 if (f->mirror_dirty) | |
| 717 update_frame_window_mirror (f); | |
| 617 | 718 return find_window_mirror_internal (f->root_window, |
| 719 XWINDOW_MIRROR (f->root_mirror), w); | |
| 428 | 720 } |
| 721 | |
| 722 /***************************************************************************** | |
| 723 find_window_by_pixel_pos | |
| 724 | |
| 725 Given a pixel position relative to a frame, find the window at that | |
| 726 position. | |
| 727 ****************************************************************************/ | |
| 728 struct window * | |
| 729 find_window_by_pixel_pos (int pix_x, int pix_y, Lisp_Object win) | |
| 730 { | |
| 731 if (NILP (win)) | |
| 732 return 0; | |
| 733 | |
| 734 for (; !NILP (win); win = XWINDOW (win)->next) | |
| 735 { | |
| 736 struct window *w; | |
| 737 | |
| 738 if (!NILP (XWINDOW (win)->vchild)) | |
| 739 { | |
| 740 w = find_window_by_pixel_pos (pix_x, pix_y, XWINDOW (win)->vchild); | |
| 741 if (w) return w; | |
| 742 } | |
| 743 if (!NILP (XWINDOW (win)->hchild)) | |
| 744 { | |
| 745 w = find_window_by_pixel_pos (pix_x, pix_y, XWINDOW (win)->hchild); | |
| 746 if (w) return w; | |
| 747 } | |
| 748 w = XWINDOW (win); | |
| 749 if (pix_x >= WINDOW_LEFT (w) | |
| 750 && pix_x <= WINDOW_RIGHT (w) | |
| 751 && pix_y >= WINDOW_TOP (w) | |
| 752 && pix_y <= WINDOW_BOTTOM (w)) | |
| 753 return w; | |
| 754 } | |
| 755 return NULL; | |
| 756 } | |
| 757 | |
| 758 /* Return a pointer to the display structures for the given window. */ | |
| 759 display_line_dynarr * | |
| 760 window_display_lines (struct window *w, int which) | |
| 761 { | |
| 762 struct window_mirror *t; | |
| 763 | |
| 764 if (XFRAME (w->frame)->mirror_dirty) | |
| 765 update_frame_window_mirror (XFRAME (w->frame)); | |
| 766 t = find_window_mirror (w); | |
|
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Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
767 assert (t); |
| 428 | 768 |
| 769 if (which == CURRENT_DISP) | |
| 770 return t->current_display_lines; | |
| 771 else if (which == DESIRED_DISP) | |
| 772 return t->desired_display_lines; | |
| 773 else if (which == CMOTION_DISP) | |
| 774 /* The CMOTION_DISP display lines are global. */ | |
| 775 return cmotion_display_lines; | |
| 776 else | |
| 2500 | 777 ABORT (); |
| 428 | 778 |
| 779 return 0; /* shut up compiler */ | |
| 780 } | |
| 781 | |
| 782 struct buffer * | |
| 783 window_display_buffer (struct window *w) | |
| 784 { | |
| 785 struct window_mirror *t; | |
| 786 | |
| 787 if (XFRAME (w->frame)->mirror_dirty) | |
| 788 update_frame_window_mirror (XFRAME (w->frame)); | |
| 789 t = find_window_mirror (w); | |
|
5050
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Fix quick-build, use asserts() in place of ABORT()
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
790 assert (t); |
| 428 | 791 |
| 792 return t->buffer; | |
| 793 } | |
| 794 | |
| 795 void | |
| 796 set_window_display_buffer (struct window *w, struct buffer *b) | |
| 797 { | |
| 798 struct window_mirror *t; | |
| 799 | |
| 800 if (XFRAME (w->frame)->mirror_dirty) | |
| 801 update_frame_window_mirror (XFRAME (w->frame)); | |
| 802 t = find_window_mirror (w); | |
|
5050
6f2158fa75ed
Fix quick-build, use asserts() in place of ABORT()
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
803 assert (t); |
| 428 | 804 |
| 805 t->buffer = b; | |
| 806 } | |
| 807 | |
| 808 | |
| 809 /* Determining a window's position based solely on its pixel | |
| 810 positioning doesn't work. Instead, we do it the intelligent way, | |
| 811 by checking its positioning in the window hierarchy. */ | |
| 812 int | |
| 813 window_is_leftmost (struct window *w) | |
| 814 { | |
| 815 Lisp_Object parent, current_ancestor, window; | |
| 816 | |
| 793 | 817 window = wrap_window (w); |
| 428 | 818 |
| 819 parent = XWINDOW (window)->parent; | |
| 820 current_ancestor = window; | |
| 821 | |
| 822 while (!NILP (parent)) | |
| 823 { | |
| 824 if (!NILP (XWINDOW (parent)->hchild) && | |
| 825 !EQ (XWINDOW (parent)->hchild, current_ancestor)) | |
| 826 return 0; | |
| 827 | |
| 828 current_ancestor = parent; | |
| 829 parent = XWINDOW (parent)->parent; | |
| 830 } | |
| 831 | |
| 832 return 1; | |
| 833 } | |
| 834 | |
| 835 int | |
| 836 window_is_rightmost (struct window *w) | |
| 837 { | |
| 838 Lisp_Object parent, current_ancestor, window; | |
| 839 | |
| 793 | 840 window = wrap_window (w); |
| 428 | 841 |
| 842 parent = XWINDOW (window)->parent; | |
| 843 current_ancestor = window; | |
| 844 | |
| 845 while (!NILP (parent)) | |
| 846 { | |
| 847 if (!NILP (XWINDOW (parent)->hchild) | |
| 848 && !NILP (XWINDOW (current_ancestor)->next)) | |
| 849 return 0; | |
| 850 | |
| 851 current_ancestor = parent; | |
| 852 parent = XWINDOW (parent)->parent; | |
| 853 } | |
| 854 | |
| 855 return 1; | |
| 856 } | |
| 857 | |
| 858 static int | |
| 859 window_full_width_p (struct window *w) | |
| 860 { | |
| 861 return window_is_leftmost (w) && window_is_rightmost (w); | |
| 862 } | |
| 863 | |
| 864 int | |
| 865 window_is_highest (struct window *w) | |
| 866 { | |
| 867 Lisp_Object parent, current_ancestor, window; | |
| 868 | |
| 793 | 869 window = wrap_window (w); |
| 428 | 870 |
| 871 parent = XWINDOW (window)->parent; | |
| 872 current_ancestor = window; | |
| 873 | |
| 874 while (!NILP (parent)) | |
| 875 { | |
| 876 if (!NILP (XWINDOW (parent)->vchild) && | |
| 877 !EQ (XWINDOW (parent)->vchild, current_ancestor)) | |
| 878 return 0; | |
| 879 | |
| 880 current_ancestor = parent; | |
| 881 parent = XWINDOW (parent)->parent; | |
| 882 } | |
| 883 | |
| 884 /* This is really to catch the minibuffer but we make it generic in | |
| 885 case we ever change things around to let the minibuffer be on top. */ | |
| 886 if (NILP (XWINDOW (current_ancestor)->prev)) | |
| 887 return 1; | |
| 888 else | |
| 889 return 0; | |
| 890 } | |
| 891 | |
| 892 int | |
| 893 window_is_lowest (struct window *w) | |
| 894 { | |
| 895 Lisp_Object parent, current_ancestor, window; | |
| 896 | |
| 793 | 897 window = wrap_window (w); |
| 428 | 898 |
| 899 parent = XWINDOW (window)->parent; | |
| 900 current_ancestor = window; | |
| 901 | |
| 902 while (!NILP (parent)) | |
| 903 { | |
| 904 if (!NILP (XWINDOW (parent)->vchild) | |
| 905 && !NILP (XWINDOW (current_ancestor)->next)) | |
| 906 return 0; | |
| 907 | |
| 908 current_ancestor = parent; | |
| 909 parent = XWINDOW (parent)->parent; | |
| 910 } | |
| 911 | |
| 912 return 1; | |
| 913 } | |
| 914 | |
| 915 #if 0 /* not currently used */ | |
| 916 | |
| 917 static int | |
| 918 window_full_height_p (struct window *w) | |
| 919 { | |
| 920 return window_is_highest (w) && window_is_lowest (w); | |
| 921 } | |
| 922 | |
| 923 #endif | |
| 924 | |
| 925 int | |
| 926 window_truncation_on (struct window *w) | |
| 927 { | |
| 928 /* Minibuffer windows are never truncated. | |
| 440 | 929 #### is this the right way ? */ |
| 428 | 930 if (MINI_WINDOW_P (w)) |
| 931 return 0; | |
| 932 | |
| 933 /* Horizontally scrolled windows are truncated. */ | |
| 934 if (w->hscroll) | |
| 935 return 1; | |
| 936 | |
| 937 /* If truncate_partial_width_windows is true and the window is not | |
| 938 the full width of the frame it is truncated. */ | |
| 707 | 939 if (!NILP (symbol_value_in_buffer (Qtruncate_partial_width_windows, |
| 940 w->buffer)) | |
| 428 | 941 && !(window_is_leftmost (w) && window_is_rightmost (w))) |
| 942 return 1; | |
| 943 | |
| 944 /* If the window's buffer's value of truncate_lines is non-nil, then | |
| 945 the window is truncated. */ | |
| 946 if (!NILP (XBUFFER (w->buffer)->truncate_lines)) | |
| 947 return 1; | |
| 948 | |
| 949 return 0; | |
| 950 } | |
| 951 | |
| 952 DEFUN ("window-truncated-p", Fwindow_truncated_p, 0, 1, 0, /* | |
| 442 | 953 Returns non-nil if text in the window is truncated. |
| 428 | 954 */ |
| 955 (window)) | |
| 956 { | |
| 957 struct window *w = decode_window (window); | |
| 958 | |
| 959 return window_truncation_on (w) ? Qt : Qnil; | |
| 960 } | |
| 961 | |
| 962 | |
| 963 static int | |
| 964 have_undivided_common_edge (struct window *w_right, void *closure) | |
| 965 { | |
| 966 struct window *w_left = (struct window *) closure; | |
| 967 return (WINDOW_RIGHT (w_left) == WINDOW_LEFT (w_right) | |
| 968 && WINDOW_TOP (w_left) < WINDOW_BOTTOM (w_right) | |
| 969 && WINDOW_TOP (w_right) < WINDOW_BOTTOM (w_left) | |
| 970 #ifdef HAVE_SCROLLBARS | |
| 971 && (NILP (w_right->scrollbar_on_left_p) | |
| 972 || NILP (w_right->vertical_scrollbar_visible_p) | |
| 973 || ZEROP (w_right->scrollbar_width)) | |
| 974 #endif | |
| 975 ); | |
| 976 } | |
| 977 | |
| 978 static int | |
| 979 window_needs_vertical_divider_1 (struct window *w) | |
| 980 { | |
| 981 /* Never if we're on the right */ | |
| 982 if (window_is_rightmost (w)) | |
| 983 return 0; | |
| 984 | |
| 985 /* Always if draggable */ | |
| 986 if (!NILP (w->vertical_divider_always_visible_p)) | |
| 987 return 1; | |
| 988 | |
| 989 #ifdef HAVE_SCROLLBARS | |
| 990 /* Our right scrollbar is enough to separate us at the right */ | |
| 991 if (NILP (w->scrollbar_on_left_p) | |
| 992 && !NILP (w->vertical_scrollbar_visible_p) | |
| 993 && !ZEROP (w->scrollbar_width)) | |
| 994 return 0; | |
| 995 #endif | |
| 996 | |
| 997 /* Ok. to determine whether we need a divider on the left, we must | |
| 998 check that our right neighbor windows have scrollbars on their | |
| 999 left sides. We must check all such windows which have common | |
| 1000 left edge with our window's right edge. */ | |
| 1001 return map_windows (XFRAME (WINDOW_FRAME (w)), | |
| 1002 have_undivided_common_edge, (void*)w); | |
| 1003 } | |
| 1004 | |
| 1005 int | |
| 1006 window_needs_vertical_divider (struct window *w) | |
| 1007 { | |
| 1008 if (!w->need_vertical_divider_valid_p) | |
| 1009 { | |
| 1010 w->need_vertical_divider_p = | |
| 1011 window_needs_vertical_divider_1 (w); | |
| 1012 w->need_vertical_divider_valid_p = 1; | |
| 1013 } | |
| 1014 return w->need_vertical_divider_p; | |
| 1015 } | |
| 1016 | |
| 1017 /* Called from invalidate_vertical_divider_cache_in_frame */ | |
| 1018 int | |
| 1019 invalidate_vertical_divider_cache_in_window (struct window *w, | |
| 2286 | 1020 void *UNUSED (unused)) |
| 428 | 1021 { |
| 1022 w->need_vertical_divider_valid_p = 0; | |
| 1023 return 0; | |
| 1024 } | |
| 1025 | |
| 1026 /* Calculate width of vertical divider, including its shadows | |
| 1027 and spacing. The returned value is effectively the distance | |
| 1028 between adjacent window edges. This function does not check | |
| 1029 whether a window needs a vertical divider, so the returned | |
| 1030 value is a "theoretical" one */ | |
| 1031 int | |
| 1032 window_divider_width (struct window *w) | |
| 1033 { | |
| 1034 /* the shadow thickness can be negative. This means that the divider | |
| 1035 will have a depressed look */ | |
| 1036 | |
| 1037 if (FRAME_WIN_P (XFRAME (WINDOW_FRAME (w)))) | |
| 1038 return | |
| 1039 XINT (w->vertical_divider_line_width) | |
| 1040 + 2 * XINT (w->vertical_divider_spacing) | |
| 1041 + 2 * abs (XINT (w->vertical_divider_shadow_thickness)); | |
| 1042 else | |
| 1043 return XINT (w->vertical_divider_line_width) == 0 ? 0 : 1; | |
| 1044 } | |
| 1045 | |
| 1046 int | |
| 4932 | 1047 window_scrollbar_width (struct window * USED_IF_SCROLLBARS (w)) |
| 428 | 1048 { |
| 1049 #ifdef HAVE_SCROLLBARS | |
| 1050 if (!WINDOW_WIN_P (w) | |
| 1051 || MINI_WINDOW_P (w) | |
| 1052 || NILP (w->buffer) | |
| 1053 || NILP (w->vertical_scrollbar_visible_p)) | |
| 1054 /* #### when does NILP (w->buffer) happen? */ | |
| 1055 return 0; | |
| 1056 | |
| 1057 return XINT (w->scrollbar_width); | |
| 1058 #else | |
| 1059 return 0; | |
| 1060 #endif /* HAVE_SCROLLBARS */ | |
| 1061 } | |
| 1062 | |
| 1063 /* Horizontal scrollbars are only active on windows with truncation | |
| 1064 turned on. */ | |
| 1065 int | |
| 4932 | 1066 window_scrollbar_height (struct window * USED_IF_SCROLLBARS (w)) |
| 428 | 1067 { |
| 1068 #ifdef HAVE_SCROLLBARS | |
| 1069 if (!WINDOW_WIN_P (w) | |
| 1070 || MINI_WINDOW_P (w) | |
| 1071 || NILP (w->buffer) | |
| 1072 || NILP (w->horizontal_scrollbar_visible_p) | |
| 1073 || !window_truncation_on (w)) | |
| 1074 return 0; | |
| 1075 | |
| 1076 return XINT (w->scrollbar_height); | |
| 1077 #else | |
| 1078 return 0; | |
| 1079 #endif /* HAVE_SCROLLBARS */ | |
| 1080 } | |
| 1081 | |
| 1082 int | |
| 1083 window_modeline_height (struct window *w) | |
| 1084 { | |
| 1085 struct frame *f = XFRAME (w->frame); | |
| 1086 int modeline_height; | |
| 1087 | |
| 1088 if (MINI_WINDOW_P (w) || NILP (w->buffer)) | |
| 1089 { | |
| 1090 modeline_height = 0; | |
| 1091 } | |
| 1092 else if (!WINDOW_HAS_MODELINE_P (w)) | |
| 1093 { | |
| 1094 if (window_scrollbar_height (w)) | |
| 1095 modeline_height = 0; | |
| 1096 else | |
| 1097 { | |
| 1098 modeline_height = FRAMEMETH (f, divider_height, ()); | |
| 1099 | |
| 1100 if (!EQ (Qzero, w->modeline_shadow_thickness) && FRAME_WIN_P (f)) | |
| 1101 modeline_height += (2 * MODELINE_SHADOW_THICKNESS (w)); | |
| 1102 } | |
| 1103 } | |
| 1104 else | |
| 1105 { | |
| 1106 if (noninteractive) | |
| 1107 modeline_height = 0; | |
| 1108 else | |
| 1109 { | |
| 1110 display_line_dynarr *dla; | |
| 1111 | |
| 1112 /* We don't force a regeneration of the modeline here. | |
| 1113 Instead it is now a precondition that any function calling | |
| 1114 this should make sure that one of these structures is | |
| 1115 up-to-date. In practice this only affects two internal | |
| 1116 redisplay functions, regenerate_window and | |
| 1117 regenerate_window_point_center. */ | |
| 1118 /* We check DESIRED_DISP because if it is valid it is more | |
| 1119 up-to-date than CURRENT_DISP. For calls to this outside | |
| 1120 of redisplay it doesn't matter which structure we check | |
| 1121 since there is a redisplay condition that these | |
| 1122 structures be identical outside of redisplay. */ | |
| 1123 dla = window_display_lines (w, DESIRED_DISP); | |
| 4967 | 1124 if (dla && Dynarr_length (dla) && Dynarr_begin (dla)->modeline) |
| 1125 modeline_height = (Dynarr_begin (dla)->ascent + | |
| 1126 Dynarr_begin (dla)->descent); | |
| 428 | 1127 else |
| 1128 { | |
| 1129 dla = window_display_lines (w, CURRENT_DISP); | |
| 4967 | 1130 if (dla && Dynarr_length (dla) && Dynarr_begin (dla)->modeline) |
| 1131 modeline_height = (Dynarr_begin (dla)->ascent + | |
| 1132 Dynarr_begin (dla)->descent); | |
| 428 | 1133 else |
| 1134 /* This should be an abort except I'm not yet 100% | |
| 1135 confident that it won't ever get hit (though I | |
| 1136 haven't been able to trigger it). It is extremely | |
| 1137 unlikely to cause any noticeable problem and even if | |
| 1138 it does it will be a minor display glitch. */ | |
| 1139 /* #### Bullshit alert. It does get hit and it causes | |
| 1140 noticeable glitches. real_current_modeline_height | |
| 1141 is a kludge to fix this for 19.14. */ | |
| 1142 modeline_height = real_current_modeline_height (w); | |
| 1143 } | |
| 1144 | |
| 1145 if (!EQ (Qzero, w->modeline_shadow_thickness) && FRAME_WIN_P (f)) | |
| 1146 modeline_height += (2 * MODELINE_SHADOW_THICKNESS (w)); | |
| 1147 } | |
| 1148 } | |
| 1149 | |
| 1150 return modeline_height; | |
| 1151 } | |
| 1152 | |
| 1153 /***************************************************************************** | |
| 1154 margin_width_internal | |
| 1155 | |
| 1156 For a given window, return the width in pixels of the specified margin. | |
| 1157 ****************************************************************************/ | |
| 1158 static int | |
| 1159 margin_width_internal (struct window *w, int left_margin) | |
| 1160 { | |
| 1161 int window_cwidth = window_char_width (w, 1); | |
| 1162 int margin_cwidth; | |
| 1163 int font_width; | |
| 1164 Lisp_Object window; | |
| 1165 | |
| 1166 /* We might be getting called on a non-leaf. */ | |
| 1167 if (NILP (w->buffer)) | |
| 1168 return 0; | |
| 1169 | |
| 1170 /* The minibuffer never has margins. */ | |
| 1171 if (MINI_WINDOW_P (w)) | |
| 1172 return 0; | |
| 1173 | |
| 793 | 1174 window = wrap_window (w); |
| 428 | 1175 margin_cwidth = (left_margin ? XINT (w->left_margin_width) : |
| 1176 XINT (w->right_margin_width)); | |
| 1177 | |
|
5047
07dcc7000bbf
put width before height consistently, fix a real bug found in the process
Ben Wing <ben@xemacs.org>
parents:
5043
diff
changeset
|
1178 default_face_width_and_height (window, &font_width, 0); |
| 428 | 1179 |
| 1180 /* The left margin takes precedence over the right margin so we | |
| 1181 subtract its width from the space available for the right | |
| 1182 margin. */ | |
| 1183 if (!left_margin) | |
| 1184 window_cwidth -= XINT (w->left_margin_width); | |
| 1185 | |
| 1186 /* The margin cannot be wider than the window is. We allow the | |
| 1187 value to be bigger since it is possible for the user to enlarge | |
| 1188 the window such that the left margin value would no longer be too | |
| 1189 big, but we won't return a value that is larger. */ | |
| 1190 if (margin_cwidth > window_cwidth) | |
| 1191 margin_cwidth = window_cwidth; | |
| 1192 | |
| 1193 /* At the user level the margin is always specified in characters. | |
| 1194 Internally however it is manipulated in terms of pixels. */ | |
| 1195 return margin_cwidth * font_width; | |
| 1196 } | |
| 1197 | |
| 1198 int | |
| 1199 window_left_margin_width (struct window *w) | |
| 1200 { | |
| 1201 return margin_width_internal (w, 1); | |
| 1202 } | |
| 1203 | |
| 1204 int | |
| 1205 window_right_margin_width (struct window *w) | |
| 1206 { | |
| 1207 return margin_width_internal (w, 0); | |
| 1208 } | |
| 1209 | |
| 1210 /***************************************************************************** | |
| 1211 Window Gutters | |
| 1212 | |
| 1213 The gutters of a window are those areas in the boundary defined by | |
| 1214 w->pixel_top, w->pixel_left, w->pixel_height and w->pixel_width which | |
| 1215 do not contain text. Items which may be in the gutters include | |
| 1216 scrollbars, toolbars and modelines. The margin areas are not | |
| 1217 included. This is an exception made because redisplay special cases | |
| 1218 the handling of those areas in many places in such a way that | |
| 1219 including them in the gutter area would make life difficult. | |
| 1220 | |
| 1221 The size functions refer to height for the bottom and top gutters and | |
| 1222 width for the left and right gutters. The starting position | |
| 1223 functions refer to the Y coord for bottom and top gutters and the X | |
| 1224 coord for left and right gutters. All starting positions are | |
| 1225 relative to the frame, not the window. | |
| 1226 ****************************************************************************/ | |
| 1227 | |
| 442 | 1228 static int |
| 1229 window_top_window_gutter_height (struct window *w) | |
| 1230 { | |
| 428 | 1231 if (!NILP (w->hchild) || !NILP (w->vchild)) |
| 1232 return 0; | |
| 1233 | |
| 1234 #ifdef HAVE_SCROLLBARS | |
| 1235 if (!NILP (w->scrollbar_on_top_p)) | |
| 442 | 1236 return window_scrollbar_height (w); |
| 428 | 1237 else |
| 1238 #endif | |
| 442 | 1239 return 0; |
| 428 | 1240 } |
| 1241 | |
| 1242 int | |
| 442 | 1243 window_top_gutter_height (struct window *w) |
| 1244 { | |
| 1245 return window_top_window_gutter_height (w); | |
| 1246 } | |
| 1247 | |
| 1248 static int | |
| 1249 window_bottom_window_gutter_height (struct window *w) | |
| 1250 { | |
| 1251 int gutter; | |
| 428 | 1252 |
| 1253 if (!NILP (w->hchild) || !NILP (w->vchild)) | |
| 1254 return 0; | |
| 1255 | |
| 442 | 1256 gutter = window_modeline_height (w); |
| 428 | 1257 |
| 1258 #ifdef HAVE_SCROLLBARS | |
| 1259 if (NILP (w->scrollbar_on_top_p)) | |
| 1260 return window_scrollbar_height (w) + gutter; | |
| 1261 else | |
| 1262 #endif | |
| 1263 return gutter; | |
| 1264 } | |
| 1265 | |
| 1266 int | |
| 442 | 1267 window_bottom_gutter_height (struct window *w) |
| 1268 { | |
| 1269 return window_bottom_window_gutter_height (w); | |
| 1270 } | |
| 1271 | |
| 1272 static int | |
| 4932 | 1273 window_left_window_gutter_width (struct window *w, |
| 1274 int USED_IF_SCROLLBARS (modeline)) | |
| 442 | 1275 { |
| 428 | 1276 if (!NILP (w->hchild) || !NILP (w->vchild)) |
| 1277 return 0; | |
| 1278 | |
| 1279 #ifdef HAVE_SCROLLBARS | |
| 1280 if (!modeline && !NILP (w->scrollbar_on_left_p)) | |
| 442 | 1281 return window_scrollbar_width (w); |
| 428 | 1282 #endif |
| 1283 | |
| 442 | 1284 return 0; |
| 428 | 1285 } |
| 1286 | |
| 1287 int | |
| 442 | 1288 window_left_gutter_width (struct window *w, int modeline) |
| 1289 { | |
| 1290 return window_left_window_gutter_width (w, modeline); | |
| 1291 } | |
| 1292 | |
| 1293 static int | |
| 4932 | 1294 window_right_window_gutter_width (struct window *w, |
| 1295 int USED_IF_SCROLLBARS (modeline)) | |
| 442 | 1296 { |
| 1297 int gutter = 0; | |
| 428 | 1298 |
| 1299 if (!NILP (w->hchild) || !NILP (w->vchild)) | |
| 1300 return 0; | |
| 1301 | |
| 1302 #ifdef HAVE_SCROLLBARS | |
| 1303 if (!modeline && NILP (w->scrollbar_on_left_p)) | |
| 1304 gutter += window_scrollbar_width (w); | |
| 1305 #endif | |
| 1306 | |
| 1307 if (window_needs_vertical_divider (w)) | |
| 1308 gutter += window_divider_width (w); | |
| 1309 | |
| 1310 return gutter; | |
| 1311 } | |
| 1312 | |
| 442 | 1313 int |
| 1314 window_right_gutter_width (struct window *w, int modeline) | |
| 1315 { | |
| 1316 return window_right_window_gutter_width (w, modeline); | |
| 1317 } | |
| 1318 | |
| 1319 static int | |
| 1320 window_pixel_height (struct window* w) | |
| 1321 { | |
| 1322 return WINDOW_HEIGHT (w); | |
| 1323 } | |
| 1324 | |
| 428 | 1325 |
| 1326 DEFUN ("windowp", Fwindowp, 1, 1, 0, /* | |
| 444 | 1327 Return t if OBJECT is a window. |
| 428 | 1328 */ |
| 444 | 1329 (object)) |
| 1330 { | |
| 1331 return WINDOWP (object) ? Qt : Qnil; | |
| 428 | 1332 } |
| 1333 | |
| 1334 DEFUN ("window-live-p", Fwindow_live_p, 1, 1, 0, /* | |
| 444 | 1335 Return t if OBJECT is a window which is currently visible. |
| 428 | 1336 */ |
| 444 | 1337 (object)) |
| 1338 { | |
| 1339 return WINDOWP (object) && WINDOW_LIVE_P (XWINDOW (object)) | |
| 1340 ? Qt : Qnil; | |
| 428 | 1341 } |
| 1342 | |
| 1343 DEFUN ("selected-window", Fselected_window, 0, 1, 0, /* | |
| 1344 Return the window that the cursor now appears in and commands apply to. | |
| 1345 If the optional argument CON-DEV-OR-FRAME is specified and is a frame, return | |
| 1346 the selected window used by that frame. If CON-DEV-OR-FRAME is a device, | |
| 1347 then the selected frame on that device will be used. If CON-DEV-OR-FRAME | |
| 1348 is a console, the selected frame on that console's selected device will | |
| 1349 be used. Otherwise, the selected frame is used. | |
| 1350 */ | |
| 1351 (con_dev_or_frame)) | |
| 1352 { | |
| 1353 if (NILP (con_dev_or_frame) && NILP (Fselected_device (Qnil))) | |
| 1354 return Qnil; /* happens at startup */ | |
| 1355 | |
| 1356 { | |
| 1357 struct frame *f = decode_frame_or_selected (con_dev_or_frame); | |
| 1358 return FRAME_SELECTED_WINDOW (f); | |
| 1359 } | |
| 1360 } | |
| 1361 | |
| 1362 DEFUN ("last-nonminibuf-window", Flast_nonminibuf_window, 0, 1, 0, /* | |
| 1363 Return the last selected window that is not a minibuffer window. | |
| 1364 If the optional argument CON-DEV-OR-FRAME is specified and is a frame, | |
| 1365 return the last non-minibuffer window used by that frame. If | |
| 1366 CON-DEV-OR-FRAME is a device, then the selected frame on that device | |
| 1367 will be used. If CON-DEV-OR-FRAME is a console, the selected frame on | |
| 1368 that console's selected device will be used. Otherwise, the selected | |
| 1369 frame is used. | |
| 1370 */ | |
| 1371 (con_dev_or_frame)) | |
| 1372 { | |
| 1373 if (NILP (con_dev_or_frame) && NILP (Fselected_device (Qnil))) | |
| 1374 return Qnil; /* happens at startup */ | |
| 1375 | |
| 1376 { | |
| 1377 struct frame *f = decode_frame_or_selected (con_dev_or_frame); | |
| 1378 return FRAME_LAST_NONMINIBUF_WINDOW (f); | |
| 1379 } | |
| 1380 } | |
| 1381 | |
| 1382 DEFUN ("minibuffer-window", Fminibuffer_window, 0, 1, 0, /* | |
| 1383 Return the window used now for minibuffers. | |
| 1384 If the optional argument CON-DEV-OR-FRAME is specified and is a frame, return | |
| 1385 the minibuffer window used by that frame. If CON-DEV-OR-FRAME is a device, | |
| 1386 then the selected frame on that device will be used. If CON-DEV-OR-FRAME | |
| 1387 is a console, the selected frame on that console's selected device will | |
| 1388 be used. Otherwise, the selected frame is used. | |
| 1389 */ | |
| 1390 (con_dev_or_frame)) | |
| 1391 { | |
| 1392 return FRAME_MINIBUF_WINDOW (decode_frame_or_selected (con_dev_or_frame)); | |
| 1393 } | |
| 1394 | |
| 438 | 1395 DEFUN ("window-minibuffer-p", Fwindow_minibuffer_p, 0, 1, 0, /* |
| 428 | 1396 Return non-nil if WINDOW is a minibuffer window. |
| 1397 */ | |
| 1398 (window)) | |
| 1399 { | |
| 1400 return MINI_WINDOW_P (decode_window (window)) ? Qt : Qnil; | |
| 1401 } | |
| 1402 | |
| 1403 DEFUN ("window-first-hchild", Fwindow_first_hchild, 1, 1, 0, /* | |
| 1404 Return the first horizontal child of WINDOW, or nil. | |
| 1405 */ | |
| 1406 (window)) | |
| 1407 { | |
| 1408 return decode_window (window)->hchild; | |
| 1409 } | |
| 1410 | |
| 1411 DEFUN ("window-first-vchild", Fwindow_first_vchild, 1, 1, 0, /* | |
| 1412 Return the first vertical child of WINDOW, or nil. | |
| 1413 */ | |
| 1414 (window)) | |
| 1415 { | |
| 1416 return decode_window (window)->vchild; | |
| 1417 } | |
| 1418 | |
| 1419 DEFUN ("window-next-child", Fwindow_next_child, 1, 1, 0, /* | |
| 1420 Return the next window on the same level as WINDOW, or nil. | |
| 1421 */ | |
| 1422 (window)) | |
| 1423 { | |
| 1424 return decode_window (window)->next; | |
| 1425 } | |
| 1426 | |
| 1427 DEFUN ("window-previous-child", Fwindow_previous_child, 1, 1, 0, /* | |
| 1428 Return the previous window on the same level as WINDOW, or nil. | |
| 1429 */ | |
| 1430 (window)) | |
| 1431 { | |
| 1432 return decode_window (window)->prev; | |
| 1433 } | |
| 1434 | |
| 1435 DEFUN ("window-parent", Fwindow_parent, 1, 1, 0, /* | |
| 1436 Return the parent of WINDOW, or nil. | |
| 1437 */ | |
| 1438 (window)) | |
| 1439 { | |
| 1440 return decode_window (window)->parent; | |
| 1441 } | |
| 1442 | |
| 1443 DEFUN ("window-lowest-p", Fwindow_lowest_p, 1, 1, 0, /* | |
| 1444 Return non-nil if WINDOW is along the bottom of its frame. | |
| 1445 */ | |
| 1446 (window)) | |
| 1447 { | |
| 1448 return window_is_lowest (decode_window (window)) ? Qt : Qnil; | |
| 1449 } | |
| 1450 | |
| 1451 DEFUN ("window-highest-p", Fwindow_highest_p, 1, 1, 0, /* | |
| 1452 Return non-nil if WINDOW is along the top of its frame. | |
| 1453 */ | |
| 1454 (window)) | |
| 1455 { | |
| 1456 return window_is_highest (decode_window (window)) ? Qt : Qnil; | |
| 1457 } | |
| 1458 | |
| 1459 DEFUN ("window-leftmost-p", Fwindow_leftmost_p, 1, 1, 0, /* | |
| 1460 Return non-nil if WINDOW is along the left edge of its frame. | |
| 1461 */ | |
| 1462 (window)) | |
| 1463 { | |
| 1464 return window_is_leftmost (decode_window (window)) ? Qt : Qnil; | |
| 1465 } | |
| 1466 | |
| 1467 DEFUN ("window-rightmost-p", Fwindow_rightmost_p, 1, 1, 0, /* | |
| 1468 Return non-nil if WINDOW is along the right edge of its frame. | |
| 1469 */ | |
| 1470 (window)) | |
| 1471 { | |
| 1472 return window_is_rightmost (decode_window (window)) ? Qt : Qnil; | |
| 1473 } | |
| 1474 | |
| 1708 | 1475 DEFUN ("pos-visible-in-window-p", Fpos_visible_in_window_p, 0, 3, 0, /* |
| 1476 Returns t if position POS is currently on the frame in WINDOW. | |
| 428 | 1477 Returns nil if that position is scrolled vertically out of view. |
| 1708 | 1478 If a character is only partially visible, nil is returned, unless the |
| 1479 optional argument PARTIALLY is non-nil. | |
| 428 | 1480 POS defaults to point in WINDOW's buffer; WINDOW, to the selected window. |
| 1481 */ | |
| 1708 | 1482 (pos, window, partially)) |
| 428 | 1483 { |
| 1484 struct window *w = decode_window (window); | |
| 665 | 1485 Charbpos top = marker_position (w->start[CURRENT_DISP]); |
| 1486 Charbpos posint; | |
| 428 | 1487 struct buffer *buf = XBUFFER (w->buffer); |
| 1488 | |
| 1489 if (NILP (pos)) | |
| 1490 posint = BUF_PT (buf); | |
| 1491 else | |
| 1492 { | |
| 1493 CHECK_INT_COERCE_MARKER (pos); | |
| 1494 posint = XINT (pos); | |
| 1495 } | |
| 1496 | |
| 1497 if (posint < top || posint > BUF_ZV (buf)) | |
| 1498 return Qnil; | |
| 1499 | |
| 1500 /* w->start can be out of range. If it is, do something reasonable. */ | |
| 1501 if (top < BUF_BEGV (buf) || top > BUF_ZV (buf)) | |
| 1502 return Qnil; | |
| 1503 | |
| 1708 | 1504 return point_would_be_visible (w, top, posint, !NILP (partially)) |
| 1505 ? Qt : Qnil; | |
| 428 | 1506 } |
| 1507 | |
| 1508 | |
| 1509 struct window * | |
| 1510 decode_window (Lisp_Object window) | |
| 1511 { | |
| 1512 if (NILP (window)) | |
| 1513 return XWINDOW (Fselected_window (Qnil)); | |
| 1514 | |
| 1515 CHECK_LIVE_WINDOW (window); | |
| 1516 return XWINDOW (window); | |
| 1517 } | |
| 1518 | |
| 872 | 1519 int |
| 1520 window_live_p (struct window *w) | |
| 1521 { | |
| 1522 return WINDOW_LIVE_P (w); | |
| 1523 } | |
| 1524 | |
| 1525 Lisp_Object | |
| 1526 window_frame (struct window *w) | |
| 1527 { | |
| 1528 return WINDOW_FRAME (w); | |
| 1529 } | |
| 1530 | |
| 1531 Lisp_Object | |
| 1532 window_buffer (struct window *w) | |
| 1533 { | |
| 1534 return WINDOW_BUFFER (w); | |
| 1535 } | |
| 1536 | |
| 428 | 1537 DEFUN ("window-buffer", Fwindow_buffer, 0, 1, 0, /* |
| 1538 Return the buffer that WINDOW is displaying. | |
| 1539 */ | |
| 1540 (window)) | |
| 1541 { | |
| 1542 return decode_window (window)->buffer; | |
| 1543 } | |
| 1544 | |
| 1545 DEFUN ("window-frame", Fwindow_frame, 0, 1, 0, /* | |
| 1546 Return the frame that window WINDOW is on. | |
| 1547 */ | |
| 1548 (window)) | |
| 1549 { | |
| 1550 return decode_window (window)->frame; | |
| 1551 } | |
| 1552 | |
| 1553 DEFUN ("window-height", Fwindow_height, 0, 1, 0, /* | |
| 1554 Return the number of default lines in WINDOW. | |
| 1555 This actually works by dividing the window's pixel height (including | |
| 1556 the modeline and horizontal scrollbar, if any) by the height of the | |
| 1557 default font; therefore, the number of displayed lines will probably | |
| 1558 be different. | |
| 1559 Use `window-height' to get consistent results in geometry calculations. | |
| 1560 Use `window-displayed-height' to get the actual number of lines | |
| 1561 currently displayed in a window. | |
| 442 | 1562 |
| 1563 The names are somewhat confusing; here's a table to help out: | |
| 1564 | |
| 1565 width height | |
| 1566 ------------------------------------------------------------------------- | |
| 1567 w/o gutters | |
| 1568 (rows/columns) window-width window-text-area-height | |
| 1569 (pixels) window-text-area-pixel-width window-text-area-pixel-height | |
| 1570 | |
| 1571 with gutters | |
| 1572 (rows/columns) window-full-width window-height | |
| 1573 (pixels) window-pixel-width window-pixel-height | |
| 1574 | |
| 1575 actually displayed | |
| 1576 (rows/columns) ---- window-displayed-height | |
| 1577 (pixels) ---- window-displayed-text-pixel-height | |
| 428 | 1578 */ |
| 1579 (window)) | |
| 1580 { | |
| 1581 return make_int (window_char_height (decode_window (window), 1)); | |
| 1582 } | |
| 1583 | |
| 1584 DEFUN ("window-displayed-height", Fwindow_displayed_height, 0, 1, 0, /* | |
| 1585 Return the number of lines currently displayed in WINDOW. | |
| 1586 This counts the actual number of lines displayed in WINDOW | |
| 1587 \(as opposed to `window-height'). The modeline and horizontal | |
| 1588 scrollbar do not count as lines. If there is some blank space | |
| 1589 between the end of the buffer and the end of the window, this | |
| 1590 function pretends that there are lines of text in the default | |
| 1591 font there. | |
| 1592 */ | |
| 1593 (window)) | |
| 1594 { | |
| 1595 return make_int (window_displayed_height (decode_window (window))); | |
| 1596 } | |
| 1597 | |
| 1598 DEFUN ("window-pixel-height", Fwindow_pixel_height, 0, 1, 0, /* | |
| 1599 Return the height of WINDOW in pixels. Defaults to current window. | |
| 1600 This includes the window's modeline and horizontal scrollbar (if any). | |
| 1601 */ | |
| 1602 (window)) | |
| 1603 { | |
| 442 | 1604 return make_int (window_pixel_height (decode_window (window))); |
| 1605 } | |
| 1606 | |
| 1607 DEFUN ("window-text-area-height", Fwindow_text_area_height, 0, 1, 0, /* | |
| 1608 Return the number of default lines in the text area of WINDOW. | |
| 1609 This actually works by dividing the window's text area pixel height (i.e. | |
| 1610 excluding the modeline and horizontal scrollbar, if any) by the height of the | |
| 1611 default font; therefore, the number of displayed lines will probably | |
| 1612 be different. | |
| 1613 See also `window-height' and `window-displayed-height'. | |
| 1614 */ | |
| 1615 (window)) | |
| 1616 { | |
| 1617 return make_int (window_char_height (decode_window (window), 0)); | |
| 428 | 1618 } |
| 1619 | |
| 1620 DEFUN ("window-text-area-pixel-height", | |
| 1621 Fwindow_text_area_pixel_height, 0, 1, 0, /* | |
| 1622 Return the height in pixels of the text-displaying portion of WINDOW. | |
| 1623 Unlike `window-pixel-height', the space occupied by the modeline and | |
| 1624 horizontal scrollbar, if any, is not counted. | |
| 1625 */ | |
| 1626 (window)) | |
| 1627 { | |
| 1628 struct window *w = decode_window (window); | |
| 1629 | |
| 1630 return make_int (WINDOW_TEXT_HEIGHT (w)); | |
| 1631 } | |
| 1632 | |
| 1633 DEFUN ("window-displayed-text-pixel-height", | |
| 1634 Fwindow_displayed_text_pixel_height, 0, 2, 0, /* | |
| 1635 Return the height in pixels of the text displayed in WINDOW. | |
| 1636 Unlike `window-text-area-pixel-height', any blank space below the | |
| 1637 end of the buffer is not included. If optional argument NOCLIPPED | |
| 1638 is non-nil, do not include space occupied by clipped lines. | |
| 1639 */ | |
| 1640 (window, noclipped)) | |
| 1641 { | |
| 1642 struct window *w; | |
| 665 | 1643 Charbpos start, eobuf; |
| 428 | 1644 int defheight; |
| 1645 int hlimit, height, prev_height = -1; | |
| 1646 int line; | |
| 1647 int elt, nelt, i; | |
| 1648 int needed; | |
| 1649 line_start_cache_dynarr *cache; | |
| 1650 | |
| 1651 if (NILP (window)) | |
| 1652 window = Fselected_window (Qnil); | |
| 1653 | |
| 1654 CHECK_LIVE_WINDOW (window); | |
| 1655 w = XWINDOW (window); | |
| 1656 | |
| 1657 start = marker_position (w->start[CURRENT_DISP]); | |
| 1658 hlimit = WINDOW_TEXT_HEIGHT (w); | |
| 1659 eobuf = BUF_ZV (XBUFFER (w->buffer)); | |
| 1660 | |
|
5047
07dcc7000bbf
put width before height consistently, fix a real bug found in the process
Ben Wing <ben@xemacs.org>
parents:
5043
diff
changeset
|
1661 default_face_width_and_height (window, NULL, &defheight); |
| 428 | 1662 |
| 1663 /* guess lines needed in line start cache + a few extra */ | |
| 1664 needed = (hlimit + defheight-1) / defheight + 3; | |
| 1665 | |
| 1666 while (1) { | |
| 1667 elt = point_in_line_start_cache (w, start, needed); | |
| 1668 assert (elt >= 0); /* in the cache */ | |
| 1669 | |
| 1670 cache = w->line_start_cache; | |
| 1671 nelt = Dynarr_length (cache); | |
| 1672 | |
| 1673 height = 0; | |
| 1674 for (i = elt; i < nelt; i++) { | |
| 1675 line = Dynarr_atp (cache, i)->height; | |
| 1676 | |
| 1677 if (height + line > hlimit) | |
| 1678 return make_int (!NILP (noclipped) ? height : hlimit); | |
| 1679 | |
| 1680 height += line; | |
| 1681 | |
| 1682 if (height == hlimit || Dynarr_atp (cache, i)->end >= eobuf) | |
| 1683 return make_int (height); | |
| 1684 } | |
| 1685 | |
| 1686 /* get here => need more cache lines. try again. */ | |
| 1687 assert(height > prev_height); /* progress? */ | |
| 1688 prev_height = height; | |
| 1689 | |
| 1690 needed += ((hlimit - height)*(nelt - elt) + height-1)/height + 3; | |
| 1691 } | |
| 1692 | |
| 1204 | 1693 RETURN_NOT_REACHED(make_int (0)); /* shut up compiler */ |
| 428 | 1694 } |
| 1695 | |
| 1696 DEFUN ("window-width", Fwindow_width, 0, 1, 0, /* | |
| 1697 Return the number of display columns in WINDOW. | |
| 442 | 1698 This is the width that is usable columns available for text in WINDOW, |
| 1699 and does not include vertical scrollbars, dividers, or the like. See also | |
| 1700 `window-full-width' and `window-height'. | |
| 428 | 1701 */ |
| 1702 (window)) | |
| 1703 { | |
| 1704 return make_int (window_char_width (decode_window (window), 0)); | |
| 1705 } | |
| 1706 | |
| 442 | 1707 DEFUN ("window-full-width", Fwindow_full_width, 0, 1, 0, /* |
| 1708 Return the total number of columns in WINDOW. | |
| 1709 This is like `window-width' but includes vertical scrollbars, dividers, | |
| 1710 etc. | |
| 1711 */ | |
| 1712 (window)) | |
| 1713 { | |
| 1714 return make_int (window_char_width (decode_window (window), 1)); | |
| 1715 } | |
| 1716 | |
| 428 | 1717 DEFUN ("window-pixel-width", Fwindow_pixel_width, 0, 1, 0, /* |
| 1718 Return the width of WINDOW in pixels. Defaults to current window. | |
| 1719 */ | |
| 1720 (window)) | |
| 1721 { | |
| 1722 return make_int (decode_window (window)->pixel_width); | |
| 1723 } | |
| 1724 | |
| 1725 DEFUN ("window-text-area-pixel-width", | |
| 1726 Fwindow_text_area_pixel_width, 0, 1, 0, /* | |
| 1727 Return the width in pixels of the text-displaying portion of WINDOW. | |
| 1728 Unlike `window-pixel-width', the space occupied by the vertical | |
| 1729 scrollbar or divider, if any, is not counted. | |
| 1730 */ | |
| 1731 (window)) | |
| 1732 { | |
| 1733 struct window *w = decode_window (window); | |
| 1734 | |
| 1735 return make_int (WINDOW_TEXT_WIDTH (w)); | |
| 1736 } | |
| 1737 | |
| 1738 DEFUN ("window-hscroll", Fwindow_hscroll, 0, 1, 0, /* | |
| 1739 Return the number of columns by which WINDOW is scrolled from left margin. | |
| 1740 */ | |
| 1741 (window)) | |
| 1742 { | |
| 1743 return make_int (decode_window (window)->hscroll); | |
| 1744 } | |
| 1745 | |
| 1746 DEFUN ("modeline-hscroll", Fmodeline_hscroll, 0, 1, 0, /* | |
| 442 | 1747 Return the horizontal scrolling amount of WINDOW's modeline. |
| 438 | 1748 If the window has no modeline, return nil. |
| 428 | 1749 */ |
| 1750 (window)) | |
| 1751 { | |
| 1752 struct window *w = decode_window (window); | |
| 1753 | |
| 438 | 1754 return (WINDOW_HAS_MODELINE_P (w)) ? make_int ((int) w->modeline_hscroll) : |
| 1755 Qnil; | |
| 428 | 1756 } |
| 1757 | |
| 1758 DEFUN ("set-modeline-hscroll", Fset_modeline_hscroll, 2, 2, 0, /* | |
| 442 | 1759 Set the horizontal scrolling amount of WINDOW's modeline to NCOL. |
| 438 | 1760 If NCOL is negative, it will silently be forced to 0. |
| 1761 If the window has no modeline, return nil. Otherwise, return the actual | |
| 1762 value that was set. | |
| 428 | 1763 */ |
| 1764 (window, ncol)) | |
| 1765 { | |
| 1766 struct window *w = decode_window (window); | |
| 1767 | |
| 1768 if (WINDOW_HAS_MODELINE_P (w)) | |
| 1769 { | |
| 438 | 1770 Charcount ncols; |
| 1771 | |
| 428 | 1772 CHECK_INT (ncol); |
| 438 | 1773 ncols = (XINT (ncol) <= 0) ? 0 : (Charcount) XINT (ncol); |
| 1774 if (ncols != w->modeline_hscroll) | |
| 1775 { | |
| 1776 MARK_MODELINE_CHANGED; | |
| 1777 w->modeline_hscroll = ncols; | |
| 1778 } | |
| 1779 return make_int ((int) ncols); | |
| 428 | 1780 } |
| 438 | 1781 |
| 428 | 1782 return Qnil; |
| 1783 } | |
| 1784 | |
| 1785 DEFUN ("set-window-hscroll", Fset_window_hscroll, 2, 2, 0, /* | |
| 1786 Set number of columns WINDOW is scrolled from left margin to NCOL. | |
| 1787 NCOL should be zero or positive. | |
| 1788 */ | |
| 1789 (window, ncol)) | |
| 1790 { | |
| 1791 struct window *w; | |
| 1792 int ncols; | |
| 1793 | |
| 1794 CHECK_INT (ncol); | |
| 1795 ncols = XINT (ncol); | |
| 1796 if (ncols < 0) ncols = 0; | |
| 1797 w = decode_window (window); | |
| 1798 if (w->hscroll != ncols) | |
| 1799 MARK_CLIP_CHANGED; /* FSF marks differently but we aren't FSF. */ | |
| 1800 w->hscroll = ncols; | |
| 1801 return ncol; | |
| 1802 } | |
| 1803 | |
| 1804 DEFUN ("window-pixel-edges", Fwindow_pixel_edges, 0, 1, 0, /* | |
| 1805 Return a list of the pixel edge coordinates of WINDOW. | |
| 444 | 1806 The returned list is of the form (LEFT TOP RIGHT BOTTOM), |
| 1807 all relative to 0, 0 at the top left corner of WINDOW's frame. | |
| 1808 The frame toolbars, menubars and gutters are considered to be outside | |
| 1809 of this area, while the scrollbars are considered to be inside. | |
| 428 | 1810 */ |
| 1811 (window)) | |
| 1812 { | |
| 1813 struct window *w = decode_window (window); | |
| 1814 struct frame *f = XFRAME (w->frame); | |
| 1815 | |
| 5090 | 1816 int left = w->pixel_left - FRAME_PANED_LEFT_EDGE (f); |
| 1817 int top = w->pixel_top - FRAME_PANED_TOP_EDGE (f); | |
| 428 | 1818 |
| 1819 return list4 (make_int (left), | |
| 1820 make_int (top), | |
| 1821 make_int (left + w->pixel_width), | |
| 1822 make_int (top + w->pixel_height)); | |
| 1823 } | |
| 1824 | |
| 1825 DEFUN ("window-text-area-pixel-edges", | |
| 1826 Fwindow_text_area_pixel_edges, 0, 1, 0, /* | |
| 1827 Return a list of the pixel edge coordinates of the text area of WINDOW. | |
| 444 | 1828 The returned list is of the form (LEFT TOP RIGHT BOTTOM), |
| 1829 all relative to 0, 0 at the top left corner of the total area allocated | |
| 1830 to the window, which includes the scrollbars. | |
| 428 | 1831 */ |
| 1832 (window)) | |
| 1833 { | |
| 1834 struct window *w = decode_window (window); | |
| 1835 | |
| 1836 int left = window_left_gutter_width (w, /* modeline = */ 0); | |
| 1837 int top = window_top_gutter_height (w); | |
| 1838 int right = WINDOW_WIDTH (w) - window_right_gutter_width (w, 0); | |
| 1839 int bottom = WINDOW_HEIGHT (w) - window_bottom_gutter_height (w); | |
| 1840 | |
| 1841 return list4 (make_int (left), | |
| 1842 make_int (top), | |
| 1843 make_int (right), | |
| 1844 make_int (bottom)); | |
| 1845 } | |
| 1846 | |
| 1847 DEFUN ("window-point", Fwindow_point, 0, 1, 0, /* | |
| 1848 Return current value of point in WINDOW. | |
| 442 | 1849 For a non-selected window, this is the value point would have |
| 428 | 1850 if that window were selected. |
| 1851 | |
| 1852 Note that, when WINDOW is the selected window and its buffer | |
| 1853 is also currently selected, the value returned is the same as (point). | |
| 1854 It would be more strictly correct to return the `top-level' value | |
| 1855 of point, outside of any save-excursion forms. | |
| 444 | 1856 But that value is hard to find. |
| 428 | 1857 */ |
| 1858 (window)) | |
| 1859 { | |
| 1860 struct window *w = decode_window (window); | |
| 1861 | |
| 1862 /* The special check for current buffer is necessary for this | |
| 1863 function to work as defined when called within an excursion. */ | |
| 1864 if (w == XWINDOW (Fselected_window (XFRAME (w->frame)->device)) | |
| 1865 && current_buffer == XBUFFER (w->buffer)) | |
| 1866 return Fpoint (Qnil); | |
| 1867 return Fmarker_position (w->pointm[CURRENT_DISP]); | |
| 1868 } | |
| 1869 | |
| 1870 DEFUN ("window-start", Fwindow_start, 0, 1, 0, /* | |
| 1871 Return position at which display currently starts in WINDOW. | |
| 1872 This is updated by redisplay or by calling `set-window-start'. | |
| 1873 */ | |
| 1874 (window)) | |
| 1875 { | |
| 1876 return Fmarker_position (decode_window (window)->start[CURRENT_DISP]); | |
| 1877 } | |
| 1878 | |
| 1879 DEFUN ("window-end", Fwindow_end, 0, 2, 0, /* | |
| 1880 Return position at which display currently ends in WINDOW. | |
| 1881 This is updated by redisplay, when it runs to completion. | |
| 444 | 1882 Simply changing the buffer text or setting `window-start' does not |
| 1883 update this value. WINDOW defaults to the selected window. | |
| 1884 | |
| 1885 If optional arg GUARANTEE is non-nil, the return value is guaranteed | |
| 1886 to be the same value as this function would return at the end of the | |
| 1887 next full redisplay assuming nothing else changes in the meantime. | |
| 1888 This function is potentially much slower with this flag set. | |
| 428 | 1889 */ |
| 1890 (window, guarantee)) | |
| 1891 { | |
| 1892 struct window *w = decode_window (window); | |
| 1893 | |
| 1894 if (NILP (guarantee)) | |
| 1895 { | |
| 1896 Lisp_Object buf; | |
| 1897 buf = w->buffer; | |
| 1898 CHECK_BUFFER (buf); | |
| 1899 return make_int (BUF_Z (XBUFFER (buf)) - w->window_end_pos[CURRENT_DISP]); | |
| 1900 } | |
| 1901 else | |
| 1902 { | |
| 665 | 1903 Charbpos startp = marker_position (w->start[CURRENT_DISP]); |
| 428 | 1904 return make_int (end_of_last_line (w, startp)); |
| 1905 } | |
| 1906 } | |
| 1907 | |
| 442 | 1908 DEFUN ("window-last-line-visible-height", Fwindow_last_line_visible_height, 0, 1, 0, /* |
| 1909 Return pixel height of visible part of last window line if it is clipped. | |
| 1910 If the last line is not clipped, return nil. | |
| 1911 */ | |
| 1912 (window)) | |
| 1913 { | |
| 1914 struct window *w = decode_window (window); | |
| 1915 display_line_dynarr *dla = window_display_lines (w, CURRENT_DISP); | |
| 1916 int num_lines = Dynarr_length (dla); | |
| 1917 struct display_line *dl; | |
| 1918 | |
| 1919 /* No lines - no clipped lines */ | |
| 4967 | 1920 if (num_lines == 0 || (num_lines == 1 && Dynarr_begin (dla)->modeline)) |
| 442 | 1921 return Qnil; |
| 1922 | |
| 1923 dl = Dynarr_atp (dla, num_lines - 1); | |
| 1924 if (dl->clip == 0) | |
| 1925 return Qnil; | |
| 1926 | |
| 1927 return make_int (dl->ascent + dl->descent - dl->clip); | |
| 1928 } | |
| 1929 | |
| 428 | 1930 DEFUN ("set-window-point", Fset_window_point, 2, 2, 0, /* |
| 1931 Make point value in WINDOW be at position POS in WINDOW's buffer. | |
| 1161 | 1932 If WINDOW is the selected window, and window's buffer is the current |
| 1933 buffer, this actually changes the buffer's point instead of the window's | |
| 1934 point. (The equivalence of the selected window's point with its buffer's | |
| 1935 point is maintained throughout XEmacs. However, enforcing the additional | |
| 1936 restriction on the current buffer is "bug compatible" with FSF and is | |
| 1937 perhaps more logical.) | |
| 428 | 1938 */ |
| 1939 (window, pos)) | |
| 1940 { | |
| 1941 struct window *w = decode_window (window); | |
| 1942 | |
| 1943 CHECK_INT_COERCE_MARKER (pos); | |
| 1161 | 1944 |
| 844 | 1945 /* Don't dereference selected-window because there may not |
| 1946 be one -- e.g. at startup */ | |
| 1161 | 1947 if (EQ (wrap_window (w), Fselected_window (Qnil)) |
| 1948 && EQ (w->buffer, Fcurrent_buffer ())) | |
| 1949 Fgoto_char (pos, Qnil); | |
| 428 | 1950 else |
| 1951 set_marker_restricted (w->pointm[CURRENT_DISP], pos, w->buffer); | |
| 1952 | |
| 1953 MARK_POINT_CHANGED; | |
| 1954 return pos; | |
| 1955 } | |
| 1956 | |
| 1957 DEFUN ("set-window-start", Fset_window_start, 2, 3, 0, /* | |
| 1958 Make display in WINDOW start at position POS in WINDOW's buffer. | |
| 1959 Optional third arg NOFORCE non-nil inhibits next redisplay | |
| 1960 from overriding motion of point in order to display at this exact start. | |
| 1961 */ | |
| 1962 (window, pos, noforce)) | |
| 1963 { | |
| 1964 struct window *w = decode_window (window); | |
| 1965 | |
| 1966 CHECK_INT_COERCE_MARKER (pos); | |
| 1967 set_marker_restricted (w->start[CURRENT_DISP], pos, w->buffer); | |
| 1968 /* this is not right, but much easier than doing what is right. */ | |
| 1969 /* w->start_at_line_beg = 0; */ | |
| 1970 /* WTF is the above supposed to mean? GE */ | |
| 1971 w->start_at_line_beg = beginning_of_line_p (XBUFFER (w->buffer), | |
| 1972 marker_position (w->start[CURRENT_DISP])); | |
| 1973 if (NILP (noforce)) | |
| 1974 w->force_start = 1; | |
| 1975 w->redo_modeline = 1; | |
| 1976 SET_LAST_MODIFIED (w, 0); | |
| 1977 SET_LAST_FACECHANGE (w); | |
| 1978 | |
| 1979 MARK_WINDOWS_CHANGED (w); | |
| 1980 | |
| 1981 return pos; | |
| 1982 } | |
| 1983 | |
| 1984 DEFUN ("window-dedicated-p", Fwindow_dedicated_p, 1, 1, 0, /* | |
| 1985 Return WINDOW's dedicated object, usually t or nil. | |
| 1986 See also `set-window-dedicated-p'. | |
| 1987 */ | |
| 1988 (window)) | |
| 1989 { | |
| 1990 return decode_window (window)->dedicated; | |
| 1991 } | |
| 1992 | |
| 1993 DEFUN ("set-window-dedicated-p", Fset_window_dedicated_p, 2, 2, 0, /* | |
| 1994 Control whether WINDOW is dedicated to the buffer it displays. | |
| 1995 If it is dedicated, Emacs will not automatically change | |
| 1996 which buffer appears in it. | |
| 1997 The second argument is the new value for the dedication flag; | |
| 1998 non-nil means yes. | |
| 1999 */ | |
| 2000 (window, arg)) | |
| 2001 { | |
| 2002 struct window *w = decode_window (window); | |
| 2003 | |
| 2004 w->dedicated = NILP (arg) ? Qnil : Qt; | |
| 2005 | |
| 2006 return w->dedicated; | |
| 2007 } | |
| 2008 | |
| 2009 /* FSFmacs has window-display-table here. We have display table as a | |
| 2010 specifier. */ | |
| 2011 | |
| 2012 | |
| 2013 /* Record info on buffer window w is displaying | |
| 2014 when it is about to cease to display that buffer. */ | |
| 2015 static void | |
| 2016 unshow_buffer (struct window *w) | |
| 2017 { | |
| 2018 Lisp_Object buf = w->buffer; | |
| 844 | 2019 struct buffer *b = XBUFFER (buf); |
| 2020 | |
|
5050
6f2158fa75ed
Fix quick-build, use asserts() in place of ABORT()
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
2021 assert (b == XMARKER (w->pointm[CURRENT_DISP])->buffer); |
| 428 | 2022 |
| 2023 /* FSF disables this check, so I'll do it too. I hope it won't | |
| 2024 break things. --ben */ | |
| 2025 #if 0 | |
| 2026 if (w == XWINDOW (Fselected_window (Qnil)) | |
| 2027 || ! EQ (buf, XWINDOW (Fselected_window (Qnil))->buffer)) | |
| 2028 /* Do this except when the selected window's buffer | |
| 2029 is being removed from some other window. */ | |
| 2030 #endif | |
| 2031 /* last_window_start records the start position that this buffer | |
| 2032 had in the last window to be disconnected from it. | |
| 2033 Now that this statement is unconditional, | |
| 2034 it is possible for the buffer to be displayed in the | |
| 2035 selected window, while last_window_start reflects another | |
| 2036 window which was recently showing the same buffer. | |
| 2037 Some people might say that might be a good thing. Let's see. */ | |
| 2038 XBUFFER (buf)->last_window_start = | |
| 2039 marker_position (w->start[CURRENT_DISP]); | |
| 2040 | |
| 2041 /* Point in the selected window's buffer | |
| 2042 is actually stored in that buffer, and the window's pointm isn't used. | |
| 2043 So don't clobber point in that buffer. */ | |
| 2044 if (! EQ (buf, XWINDOW (Fselected_window (Qnil))->buffer)) | |
| 844 | 2045 BUF_SET_PT (b, |
| 2046 charbpos_clip_to_bounds | |
| 2047 (BUF_BEGV (b), | |
| 2048 marker_position (w->pointm[CURRENT_DISP]), | |
| 2049 BUF_ZV (b))); | |
| 2050 | |
| 2051 { | |
| 2052 Lisp_Object marker = Fgethash (buf, w->saved_point_cache, Qnil); | |
| 2053 int selected = EQ (wrap_window (w), Fselected_window (Qnil)); | |
| 2054 | |
| 2055 if (NILP (marker)) | |
| 2056 { | |
| 2057 marker = Fmake_marker (); | |
| 2058 Fputhash (buf, marker, w->saved_point_cache); | |
| 2059 } | |
| 2060 Fset_marker (marker, | |
| 2061 selected ? make_int (BUF_PT (b)) : w->pointm[CURRENT_DISP], | |
| 2062 buf); | |
| 2063 | |
| 2064 marker = Fgethash (buf, w->saved_last_window_start_cache, Qnil); | |
| 2065 | |
| 2066 if (NILP (marker)) | |
| 2067 { | |
| 2068 marker = Fmake_marker (); | |
| 2069 Fputhash (buf, marker, w->saved_last_window_start_cache); | |
| 2070 } | |
| 2071 Fset_marker (marker, w->start[CURRENT_DISP], buf); | |
| 2072 } | |
| 428 | 2073 } |
| 2074 | |
| 2075 /* Put REPLACEMENT into the window structure in place of OLD. */ | |
| 2076 static void | |
| 2077 replace_window (Lisp_Object old, Lisp_Object replacement) | |
| 2078 { | |
| 2079 Lisp_Object tem; | |
| 2080 struct window *o = XWINDOW (old), *p = XWINDOW (replacement); | |
| 2081 | |
| 2082 /* If OLD is its frame's root_window, then replacement is the new | |
| 2083 root_window for that frame. */ | |
| 2084 | |
| 2085 if (EQ (old, FRAME_ROOT_WINDOW (XFRAME (o->frame)))) | |
| 2086 FRAME_ROOT_WINDOW (XFRAME (o->frame)) = replacement; | |
| 2087 | |
| 2088 WINDOW_LEFT (p) = WINDOW_LEFT (o); | |
| 2089 WINDOW_TOP (p) = WINDOW_TOP (o); | |
| 2090 WINDOW_WIDTH (p) = WINDOW_WIDTH (o); | |
| 2091 WINDOW_HEIGHT (p) = WINDOW_HEIGHT (o); | |
| 2092 | |
| 2093 p->next = tem = o->next; | |
| 2094 if (!NILP (tem)) | |
| 2095 XWINDOW (tem)->prev = replacement; | |
| 2096 | |
| 2097 p->prev = tem = o->prev; | |
| 2098 if (!NILP (tem)) | |
| 2099 XWINDOW (tem)->next = replacement; | |
| 2100 | |
| 2101 p->parent = tem = o->parent; | |
| 2102 if (!NILP (tem)) | |
| 2103 { | |
| 2104 if (EQ (XWINDOW (tem)->vchild, old)) | |
| 2105 XWINDOW (tem)->vchild = replacement; | |
| 2106 if (EQ (XWINDOW (tem)->hchild, old)) | |
| 2107 XWINDOW (tem)->hchild = replacement; | |
| 2108 } | |
| 2109 | |
| 2110 /* #### Here, if replacement is a vertical combination | |
| 2111 and so is its new parent, we should make replacement's | |
| 2112 children be children of that parent instead. */ | |
| 442 | 2113 |
| 2114 ERROR_CHECK_SUBWINDOW_CACHE (p); | |
| 2115 } | |
| 2116 | |
| 2117 static void | |
| 2118 window_unmap_subwindows (struct window* w) | |
| 2119 { | |
| 2120 assert (!NILP (w->subwindow_instance_cache)); | |
| 2121 elisp_maphash (unmap_subwindow_instance_cache_mapper, | |
| 2122 w->subwindow_instance_cache, (void*)1); | |
| 428 | 2123 } |
| 2124 | |
| 2125 /* we're deleting W; set the structure of W to indicate this. */ | |
| 2126 | |
| 2127 static void | |
| 2128 mark_window_as_deleted (struct window *w) | |
| 2129 { | |
| 442 | 2130 /* The window instance cache is going away now, so need to get the |
| 2131 cachels reset by redisplay. */ | |
| 2132 MARK_FRAME_SUBWINDOWS_CHANGED (XFRAME (WINDOW_FRAME (w))); | |
| 2133 | |
| 2134 /* The cache is going away. If we leave unmapping to | |
| 2135 reset_subwindow_cachels then we get in a situation where the | |
| 2136 domain (the window) has been deleted but we still need access to | |
| 2137 its attributes in order to unmap windows properly. Since the | |
| 2138 subwindows are going to get GC'd anyway as a result of the domain | |
| 2139 going away, it is safer to just unmap them all while we know the | |
| 2140 domain is still valid. */ | |
| 2141 ERROR_CHECK_SUBWINDOW_CACHE (w); | |
| 2142 window_unmap_subwindows (w); | |
| 2143 | |
| 617 | 2144 /* Free the extra data structures attached to windows immediately so |
| 2145 they don't sit around consuming excess space. They will be | |
| 2146 reinitialized by the window-configuration code as necessary. */ | |
| 2147 finalize_window ((void *) w, 0); | |
| 2148 | |
| 1149 | 2149 /* Nobody should be accessing anything in this object any more, |
| 618 | 2150 and making them Qnil allows for better GC'ing in case a pointer |
| 2151 to the dead window continues to hang around. Zero all other | |
| 2152 structs in case someone tries to access something through them. | |
| 2153 | |
| 2154 (So, in point of fact, we zero out all of the "saved" slots, | |
| 2155 which are obviously restored from the window config, plus the | |
| 2156 slots which were already zeroed.) | |
| 617 | 2157 |
| 2158 As an example of why setting the values to Qnil is good, here | |
| 2159 is an old comment: | |
| 2160 | |
| 2161 In the loop | |
| 428 | 2162 (while t (split-window) (delete-window)) |
| 2163 we end up with a tree of deleted windows which are all connected | |
| 2164 through the `next' slot. This might not seem so bad, as they're | |
| 2165 deleted, and will presumably be GCed - but if even *one* of those | |
| 2166 windows is still being pointed to, by the user, or by a window | |
| 1149 | 2167 configuration, then *all* of those windows stick around. */ |
| 617 | 2168 |
| 618 | 2169 #define WINDOW_SLOT(slot) |
| 2170 #define WINDOW_SAVED_SLOT(slot, compare) w->slot = Qnil; | |
| 617 | 2171 #include "winslots.h" |
| 428 | 2172 |
| 618 | 2173 w->next = Qnil; |
| 2174 w->prev = Qnil; | |
| 2175 w->hchild = Qnil; | |
| 2176 w->vchild = Qnil; | |
| 2177 w->parent = Qnil; | |
| 2178 w->subwindow_instance_cache = Qnil; | |
| 2179 | |
| 428 | 2180 w->dead = 1; |
| 853 | 2181 note_object_deleted (wrap_window (w)); |
| 428 | 2182 } |
| 2183 | |
| 1207 | 2184 /* Check if window contains pwindow. */ |
| 2185 | |
| 2186 static int | |
| 2187 contains_window (Lisp_Object window, Lisp_Object pwindow) | |
| 2188 { | |
| 2189 while (!NILP (pwindow)) | |
| 2190 { | |
| 2191 if (EQ (window, pwindow)) | |
| 2192 return 1; | |
| 2193 pwindow = XWINDOW (pwindow)->parent; | |
| 2194 } | |
| 2195 return 0; | |
| 2196 } | |
| 2197 | |
| 428 | 2198 DEFUN ("delete-window", Fdelete_window, 0, 2, "", /* |
| 2199 Remove WINDOW from the display. Default is selected window. | |
| 444 | 2200 If window is the only one on its frame, the frame is deleted as well. |
| 428 | 2201 Normally, you cannot delete the last non-minibuffer-only frame (you must |
| 2202 use `save-buffers-kill-emacs' or `kill-emacs'). However, if optional | |
| 2203 second argument FORCE is non-nil, you can delete the last frame. (This | |
| 2204 will automatically call `save-buffers-kill-emacs'.) | |
| 2205 */ | |
| 2206 (window, force)) | |
| 2207 { | |
| 2208 /* This function can GC if this is the only window in the frame */ | |
| 2209 struct window *w; | |
| 2210 Lisp_Object parent; | |
| 2211 struct window *par; | |
| 2212 Lisp_Object frame; | |
| 2213 struct frame *f; | |
| 2214 struct device *d; | |
| 2215 | |
| 2216 /* Note: this function is called by other C code on non-leaf | |
| 2217 windows. */ | |
| 2218 | |
| 2219 /* Do the equivalent of decode_window() but don't error out on | |
| 2220 deleted window; it's OK to delete an already-deleted window. */ | |
| 2221 if (NILP (window)) | |
| 2222 window = Fselected_window (Qnil); | |
| 2223 else | |
| 2224 CHECK_WINDOW (window); | |
| 442 | 2225 |
| 428 | 2226 w = XWINDOW (window); |
| 2227 | |
| 2228 /* It's okay to delete an already-deleted window. */ | |
| 2229 if (! WINDOW_LIVE_P (w)) | |
| 2230 return Qnil; | |
| 2231 | |
| 853 | 2232 check_allowed_operation (OPERATION_DELETE_OBJECT, window, Qnil); |
| 2233 | |
| 428 | 2234 frame = WINDOW_FRAME (w); |
| 2235 f = XFRAME (frame); | |
| 2236 d = XDEVICE (FRAME_DEVICE (f)); | |
| 2237 | |
| 2238 if (TOP_LEVEL_WINDOW_P (w)) | |
| 2239 { | |
| 2240 if (NILP (memq_no_quit (frame, DEVICE_FRAME_LIST (d)))) | |
| 2241 /* this frame isn't fully initialized yet; don't blow up. */ | |
| 2242 return Qnil; | |
| 2243 | |
| 2244 if (MINI_WINDOW_P (XWINDOW (window))) | |
| 563 | 2245 signal_error (Qinvalid_operation, "Attempt to delete the minibuffer window", Qunbound); |
| 428 | 2246 |
| 2247 /* It has been suggested that it's a good thing for C-x 0 to have this | |
| 2248 behavior, but not such a good idea for #'delete-window to have it. | |
| 2249 Maybe C-x 0 should be bound to something else, or maybe frame | |
| 2250 deletion should only happen when this is called interactively. | |
| 2251 */ | |
| 2252 delete_frame_internal (f, !NILP (force), 0, 0); | |
| 2253 return Qnil; | |
| 2254 } | |
| 2255 | |
| 2256 /* At this point, we know the window has a parent. */ | |
| 2257 parent = w->parent; | |
| 2258 par = XWINDOW (parent); | |
| 2259 | |
| 2260 MARK_FRAME_WINDOWS_STRUCTURE_CHANGED (f); | |
| 430 | 2261 /* It's quite likely that deleting a window will result in |
| 2262 subwindows needing to be deleted also (since they are cached | |
| 2263 per-window). So we mark them as changed, so that the cachels will | |
| 2264 get reset by redisplay and thus deleted subwindows can get | |
| 2265 GC'd. */ | |
| 2266 MARK_FRAME_SUBWINDOWS_CHANGED (f); | |
| 428 | 2267 |
| 2268 /* Are we trying to delete any frame's selected window? | |
| 2269 Note that we could be dealing with a non-leaf window | |
| 2270 where the selected window is one of our children. | |
| 2271 So, we check by scanning all the ancestors of the | |
| 2272 frame's selected window and comparing each one with | |
| 2273 WINDOW. */ | |
| 1207 | 2274 if (contains_window (window, FRAME_SELECTED_WINDOW (f))) |
| 2275 { | |
| 2276 Lisp_Object alternative; | |
| 2277 alternative = Fnext_window (window, Qlambda, Qnil, Qnil); | |
| 2278 | |
| 2279 /* #### */ | |
| 2280 /* If we're about to delete the selected window on the | |
| 2281 selected frame, then we should use Fselect_window to select | |
| 2282 the new window. On the other hand, if we're about to | |
| 2283 delete the selected window on any other frame, we shouldn't do | |
| 2284 anything but set the frame's selected_window slot. */ | |
| 2285 if (EQ (frame, Fselected_frame (Qnil))) | |
| 2286 Fselect_window (alternative, Qnil); | |
| 2287 else | |
| 2288 set_frame_selected_window (f, alternative); | |
| 2289 } | |
| 2290 | |
| 2291 /* Some display parameters (gutter display specifically) depend on | |
| 2292 FRAME_LAST_NONMINIBUF (f) to be set to a live window. Ensure that. */ | |
| 2293 if (contains_window (window, FRAME_LAST_NONMINIBUF_WINDOW (f))) | |
| 2294 f->last_nonminibuf_window = Fnext_window (window, Qlambda, Qnil, Qnil); | |
| 428 | 2295 |
| 2296 /* w->buffer is nil in a non-leaf window; in this case, | |
| 2297 get rid of the markers we maintain that point into that buffer. */ | |
| 2298 if (!NILP (w->buffer)) | |
| 2299 { | |
| 2300 unshow_buffer (w); | |
| 2301 unchain_marker (w->pointm[CURRENT_DISP]); | |
| 2302 unchain_marker (w->pointm[DESIRED_DISP]); | |
| 2303 unchain_marker (w->pointm[CMOTION_DISP]); | |
| 2304 unchain_marker (w->start[CURRENT_DISP]); | |
| 2305 unchain_marker (w->start[DESIRED_DISP]); | |
| 2306 unchain_marker (w->start[CMOTION_DISP]); | |
| 2307 unchain_marker (w->sb_point); | |
| 1149 | 2308 w->buffer = Qnil; |
| 428 | 2309 } |
| 2310 | |
| 2311 /* close up the hole in the sibling list */ | |
| 2312 if (!NILP (w->next)) | |
| 2313 XWINDOW (w->next)->prev = w->prev; | |
| 2314 if (!NILP (w->prev)) | |
| 2315 XWINDOW (w->prev)->next = w->next; | |
| 2316 if (EQ (window, par->hchild)) | |
| 2317 par->hchild = w->next; | |
| 2318 if (EQ (window, par->vchild)) | |
| 2319 par->vchild = w->next; | |
| 2320 | |
| 2321 /* Find one of our siblings to give our space to. */ | |
| 2322 { | |
| 2323 Lisp_Object sib = w->prev; | |
| 2324 if (NILP (sib)) | |
| 2325 { | |
| 2326 /* If w gives its space to its next sibling, that sibling needs | |
| 2327 to have its top/left side pulled back to where w's is. | |
| 2328 set_window_{height,width} will re-position the sibling's | |
| 2329 children. */ | |
| 2330 sib = w->next; | |
| 2331 WINDOW_TOP (XWINDOW (sib)) = WINDOW_TOP (w); | |
| 2332 WINDOW_LEFT (XWINDOW (sib)) = WINDOW_LEFT (w); | |
| 2333 } | |
| 2334 | |
| 2335 /* Stretch that sibling. */ | |
| 2336 if (!NILP (par->vchild)) | |
| 2337 set_window_pixheight | |
| 2338 (sib, (WINDOW_HEIGHT (XWINDOW (sib)) + WINDOW_HEIGHT (w)), 1); | |
| 2339 if (!NILP (par->hchild)) | |
| 2340 set_window_pixwidth | |
| 2341 (sib, (WINDOW_WIDTH (XWINDOW (sib)) + WINDOW_WIDTH (w)), 1); | |
| 2342 } | |
| 2343 | |
| 2344 /* If parent now has only one child, | |
| 2345 put the child into the parent's place. */ | |
| 2346 { | |
| 2347 Lisp_Object parchild = par->hchild; | |
| 2348 if (NILP (parchild)) | |
| 2349 parchild = par->vchild; | |
| 2350 if (NILP (XWINDOW (parchild)->next)) | |
| 2351 { | |
| 2352 replace_window (parent, parchild); | |
| 2353 mark_window_as_deleted (XWINDOW (parent)); | |
| 2354 } | |
| 2355 } | |
| 2356 | |
| 2357 /* Since we may be deleting combination windows, we must make sure that | |
| 2358 not only W but all its children have been marked as deleted. */ | |
| 2359 if (!NILP (w->hchild)) | |
| 2360 delete_all_subwindows (XWINDOW (w->hchild)); | |
| 2361 else if (!NILP (w->vchild)) | |
| 2362 delete_all_subwindows (XWINDOW (w->vchild)); | |
| 2363 | |
| 1752 | 2364 /* Warning: mark_window_as_deleted calls window_unmap_subwindows and |
| 2365 therefore redisplay, so it requires the mirror structure to be | |
| 2366 correct. We must dirty the mirror before it is called. */ | |
| 2367 f->mirror_dirty = 1; | |
| 2368 | |
| 428 | 2369 mark_window_as_deleted (w); |
| 2370 | |
| 2371 return Qnil; | |
| 2372 } | |
| 2373 | |
| 2374 | |
| 2375 DEFUN ("next-window", Fnext_window, 0, 4, 0, /* | |
| 442 | 2376 Return the next window after WINDOW in the canonical ordering of windows. |
| 428 | 2377 If omitted, WINDOW defaults to the selected window. |
| 2378 | |
| 2379 Optional second arg MINIBUF t means count the minibuffer window even | |
| 2380 if not active. MINIBUF nil or omitted means count the minibuffer iff | |
| 2381 it is active. MINIBUF neither t nor nil means not to count the | |
| 2382 minibuffer even if it is active. | |
| 2383 | |
| 2384 Several frames may share a single minibuffer; if the minibuffer | |
| 2385 counts, all windows on all frames that share that minibuffer count | |
| 2386 too. Therefore, `next-window' can be used to iterate through the | |
| 2387 set of windows even when the minibuffer is on another frame. If the | |
| 2388 minibuffer does not count, only windows from WINDOW's frame count. | |
| 2389 | |
| 444 | 2390 By default, only the windows in the selected frame are considered. |
| 2391 The optional argument WHICH-FRAMES changes this behavior: | |
| 2392 WHICH-FRAMES = `visible' means search windows on all visible frames. | |
| 448 | 2393 WHICH-FRAMES = 0 means search windows on all visible and iconified frames. |
| 444 | 2394 WHICH-FRAMES = t means search windows on all frames including invisible frames. |
| 2395 WHICH-FRAMES = a frame means search only windows on that frame. | |
| 2396 Anything else means restrict to the selected frame. | |
| 2397 | |
| 2398 The optional fourth argument WHICH-DEVICES further clarifies on which | |
| 2399 devices to search for frames as specified by WHICH-FRAMES. This value | |
| 2400 is only meaningful if WHICH-FRAMES is non-nil. | |
| 2401 If nil or omitted, search all devices on the selected console. | |
| 2402 If a device, only search that device. | |
| 2403 If a console, search all devices on that console. | |
| 2404 If a device type, search all devices of that type. | |
| 2405 If `window-system', search all window-system devices. | |
| 2406 Any other non-nil value means search all devices. | |
| 2407 | |
| 2408 If you use consistent values for MINIBUF, WHICH-FRAMES, and WHICH-DEVICES, | |
| 2409 you can use `next-window' to iterate through the entire cycle of | |
| 2410 acceptable windows, eventually ending up back at the window you started with. | |
| 428 | 2411 `previous-window' traverses the same cycle, in the reverse order. |
| 2412 */ | |
| 444 | 2413 (window, minibuf, which_frames, which_devices)) |
| 428 | 2414 { |
| 2415 Lisp_Object tem; | |
| 2416 Lisp_Object start_window; | |
| 2417 | |
| 2418 if (NILP (window)) | |
| 2419 window = Fselected_window (Qnil); | |
| 2420 else | |
| 2421 CHECK_LIVE_WINDOW (window); | |
| 2422 | |
| 2423 start_window = window; | |
| 2424 | |
| 2425 /* minibuf == nil may or may not include minibuffers. | |
| 2426 Decide if it does. */ | |
| 2427 if (NILP (minibuf)) | |
| 2428 minibuf = (minibuf_level ? minibuf_window : Qlambda); | |
| 2429 else if (! EQ (minibuf, Qt)) | |
| 2430 minibuf = Qlambda; | |
| 442 | 2431 /* Now `minibuf' is one of: |
| 2432 t => count all minibuffer windows | |
| 2433 lambda => count none of them | |
| 428 | 2434 or a specific minibuffer window (the active one) to count. */ |
| 2435 | |
| 444 | 2436 /* which_frames == nil doesn't specify which frames to include. */ |
| 2437 if (NILP (which_frames)) | |
| 2438 which_frames = (! EQ (minibuf, Qlambda) | |
| 428 | 2439 ? (FRAME_MINIBUF_WINDOW |
| 2440 (XFRAME | |
| 2441 (WINDOW_FRAME | |
| 2442 (XWINDOW (window))))) | |
| 2443 : Qnil); | |
| 444 | 2444 else if (EQ (which_frames, Qvisible)) |
| 428 | 2445 ; |
| 444 | 2446 else if (ZEROP (which_frames)) |
| 428 | 2447 ; |
| 444 | 2448 else if (FRAMEP (which_frames) && ! EQ (which_frames, Fwindow_frame (window))) |
| 2449 /* If which_frames is a frame and window arg isn't on that frame, just | |
| 428 | 2450 return the first window on the frame. */ |
| 444 | 2451 return frame_first_window (XFRAME (which_frames)); |
| 2452 else if (! EQ (which_frames, Qt)) | |
| 2453 which_frames = Qnil; | |
| 2454 /* Now `which_frames' is one of: | |
| 442 | 2455 t => search all frames |
| 2456 nil => search just the current frame | |
| 2457 visible => search just visible frames | |
| 2458 0 => search visible and iconified frames | |
| 2459 a window => search the frame that window belongs to. */ | |
| 428 | 2460 |
| 2461 /* Do this loop at least once, to get the next window, and perhaps | |
| 2462 again, if we hit the minibuffer and that is not acceptable. */ | |
| 2463 do | |
| 2464 { | |
| 2465 /* Find a window that actually has a next one. This loop | |
| 2466 climbs up the tree. */ | |
| 2467 while (tem = XWINDOW (window)->next, NILP (tem)) | |
| 2468 if (tem = XWINDOW (window)->parent, !NILP (tem)) | |
| 2469 window = tem; | |
| 2470 else /* window must be minibuffer window now */ | |
| 2471 { | |
| 2472 /* We've reached the end of this frame. | |
| 2473 Which other frames are acceptable? */ | |
| 2474 tem = WINDOW_FRAME (XWINDOW (window)); | |
| 2475 | |
| 444 | 2476 if (! NILP (which_frames)) |
| 428 | 2477 { |
| 442 | 2478 Lisp_Object tem1 = tem; |
| 444 | 2479 tem = next_frame (tem, which_frames, which_devices); |
| 442 | 2480 |
| 428 | 2481 /* In the case where the minibuffer is active, |
| 2482 and we include its frame as well as the selected one, | |
| 2483 next_frame may get stuck in that frame. | |
| 2484 If that happens, go back to the selected frame | |
| 2485 so we can complete the cycle. */ | |
| 2486 if (EQ (tem, tem1)) | |
| 793 | 2487 tem = wrap_frame (selected_frame ()); |
| 428 | 2488 } |
| 2489 | |
| 2490 tem = FRAME_ROOT_WINDOW (XFRAME (tem)); | |
| 2491 break; | |
| 2492 } | |
| 2493 | |
| 2494 window = tem; | |
| 2495 | |
| 2496 /* If we're in a combination window, find its first child and | |
| 2497 recurse on that. Otherwise, we've found the window we want. */ | |
| 2498 while (1) | |
| 2499 { | |
| 2500 if (!NILP (XWINDOW (window)->hchild)) | |
| 2501 window = XWINDOW (window)->hchild; | |
| 2502 else if (!NILP (XWINDOW (window)->vchild)) | |
| 2503 window = XWINDOW (window)->vchild; | |
| 2504 else break; | |
| 2505 } | |
| 2506 } | |
| 2507 /* Which windows are acceptable? | |
| 2508 Exit the loop and accept this window if | |
| 2509 this isn't a minibuffer window, | |
| 2510 or we're accepting all minibuffer windows, | |
| 2511 or this is the active minibuffer and we are accepting that one, or | |
| 2512 we've come all the way around and we're back at the original window. */ | |
| 2513 while (MINI_WINDOW_P (XWINDOW (window)) | |
| 2514 && ! EQ (minibuf, Qt) | |
| 2515 && ! EQ (minibuf, window) | |
| 2516 && ! EQ (window, start_window)); | |
| 2517 | |
| 2518 return window; | |
| 2519 } | |
| 2520 | |
| 2521 DEFUN ("previous-window", Fprevious_window, 0, 4, 0, /* | |
| 442 | 2522 Return the window preceding WINDOW in the canonical ordering of windows. |
| 428 | 2523 If omitted, WINDOW defaults to the selected window. |
| 2524 | |
| 2525 Optional second arg MINIBUF t means count the minibuffer window even | |
| 2526 if not active. MINIBUF nil or omitted means count the minibuffer iff | |
| 2527 it is active. MINIBUF neither t nor nil means not to count the | |
| 2528 minibuffer even if it is active. | |
| 2529 | |
| 2530 Several frames may share a single minibuffer; if the minibuffer | |
| 2531 counts, all windows on all frames that share that minibuffer count | |
| 2532 too. Therefore, `previous-window' can be used to iterate through | |
| 2533 the set of windows even when the minibuffer is on another frame. If | |
| 442 | 2534 the minibuffer does not count, only windows from WINDOW's frame count. |
| 2535 | |
| 444 | 2536 By default, only the windows in the selected frame are considered. |
| 2537 The optional argument WHICH-FRAMES changes this behavior: | |
| 2538 WHICH-FRAMES = `visible' means search windows on all visible frames. | |
| 448 | 2539 WHICH-FRAMES = 0 means search windows on all visible and iconified frames. |
| 444 | 2540 WHICH-FRAMES = t means search windows on all frames including invisible frames. |
| 2541 WHICH-FRAMES = a frame means search only windows on that frame. | |
| 2542 Anything else means restrict to the selected frame. | |
| 2543 | |
| 2544 The optional fourth argument WHICH-DEVICES further clarifies on which | |
| 2545 devices to search for frames as specified by WHICH-FRAMES. This value | |
| 2546 is only meaningful if WHICH-FRAMES is non-nil. | |
| 2547 If nil or omitted, search all devices on the selected console. | |
| 2548 If a device, only search that device. | |
| 2549 If a console, search all devices on that console. | |
| 2550 If a device type, search all devices of that type. | |
| 2551 If `window-system', search all window-system devices. | |
| 2552 Any other non-nil value means search all devices. | |
| 2553 | |
| 2554 If you use consistent values for MINIBUF, WHICH-FRAMES, and WHICH-DEVICES, | |
| 2555 you can use `previous-window' to iterate through the entire cycle of | |
| 2556 acceptable windows, eventually ending up back at the window you started with. | |
| 428 | 2557 `next-window' traverses the same cycle, in the reverse order. |
| 2558 */ | |
| 444 | 2559 (window, minibuf, which_frames, devices)) |
| 428 | 2560 { |
| 2561 Lisp_Object tem; | |
| 2562 Lisp_Object start_window; | |
| 2563 | |
| 2564 if (NILP (window)) | |
| 2565 window = Fselected_window (Qnil); | |
| 2566 else | |
| 2567 CHECK_LIVE_WINDOW (window); | |
| 2568 | |
| 2569 start_window = window; | |
| 2570 | |
| 2571 /* minibuf == nil may or may not include minibuffers. | |
| 2572 Decide if it does. */ | |
| 2573 if (NILP (minibuf)) | |
| 2574 minibuf = (minibuf_level ? minibuf_window : Qlambda); | |
| 2575 else if (! EQ (minibuf, Qt)) | |
| 2576 minibuf = Qlambda; | |
| 442 | 2577 /* Now `minibuf' is one of: |
| 2578 t => count all minibuffer windows | |
| 2579 lambda => count none of them | |
| 428 | 2580 or a specific minibuffer window (the active one) to count. */ |
| 2581 | |
| 444 | 2582 /* which_frames == nil doesn't specify which frames to include. |
| 428 | 2583 Decide which frames it includes. */ |
| 444 | 2584 if (NILP (which_frames)) |
| 2585 which_frames = (! EQ (minibuf, Qlambda) | |
| 428 | 2586 ? (FRAME_MINIBUF_WINDOW |
| 2587 (XFRAME | |
| 2588 (WINDOW_FRAME | |
| 2589 (XWINDOW (window))))) | |
| 2590 : Qnil); | |
| 444 | 2591 else if (EQ (which_frames, Qvisible)) |
| 428 | 2592 ; |
| 444 | 2593 else if (ZEROP (which_frames)) |
| 428 | 2594 ; |
| 444 | 2595 else if (FRAMEP (which_frames) && ! EQ (which_frames, Fwindow_frame (window))) |
| 2596 /* If which_frames is a frame and window arg isn't on that frame, just | |
| 428 | 2597 return the first window on the frame. */ |
| 444 | 2598 return frame_first_window (XFRAME (which_frames)); |
| 2599 else if (! EQ (which_frames, Qt)) | |
| 2600 which_frames = Qnil; | |
| 2601 /* Now `which_frames' is one of: | |
| 442 | 2602 t => search all frames |
| 2603 nil => search just the current frame | |
| 2604 visible => search just visible frames | |
| 2605 0 => search visible and iconified frames | |
| 2606 a window => search the frame that window belongs to. */ | |
| 428 | 2607 |
| 2608 /* Do this loop at least once, to get the next window, and perhaps | |
| 2609 again, if we hit the minibuffer and that is not acceptable. */ | |
| 2610 do | |
| 2611 { | |
| 2612 /* Find a window that actually has a next one. This loop | |
| 2613 climbs up the tree. */ | |
| 2614 while (tem = XWINDOW (window)->prev, NILP (tem)) | |
| 2615 if (tem = XWINDOW (window)->parent, !NILP (tem)) | |
| 2616 window = tem; | |
| 2617 else /* window must be minibuffer window now */ | |
| 2618 { | |
| 2619 /* We have found the top window on the frame. | |
| 2620 Which frames are acceptable? */ | |
| 2621 tem = WINDOW_FRAME (XWINDOW (window)); | |
| 2622 | |
| 444 | 2623 if (! NILP (which_frames)) |
| 442 | 2624 /* It's actually important that we use previous_frame here, |
| 428 | 2625 rather than next_frame. All the windows acceptable |
| 2626 according to the given parameters should form a ring; | |
| 2627 Fnext_window and Fprevious_window should go back and | |
| 2628 forth around the ring. If we use next_frame here, | |
| 2629 then Fnext_window and Fprevious_window take different | |
| 2630 paths through the set of acceptable windows. | |
| 2631 window_loop assumes that these `ring' requirement are | |
| 2632 met. */ | |
| 2633 { | |
| 442 | 2634 Lisp_Object tem1 = tem; |
| 444 | 2635 tem = previous_frame (tem, which_frames, devices); |
| 428 | 2636 /* In the case where the minibuffer is active, |
| 2637 and we include its frame as well as the selected one, | |
| 2638 next_frame may get stuck in that frame. | |
| 2639 If that happens, go back to the selected frame | |
| 2640 so we can complete the cycle. */ | |
| 2641 if (EQ (tem, tem1)) | |
| 793 | 2642 tem = wrap_frame (selected_frame ()); |
| 428 | 2643 } |
| 2644 | |
| 2645 /* If this frame has a minibuffer, find that window first, | |
| 2646 because it is conceptually the last window in that frame. */ | |
| 2647 if (FRAME_HAS_MINIBUF_P (XFRAME (tem))) | |
| 2648 tem = FRAME_MINIBUF_WINDOW (XFRAME (tem)); | |
| 2649 else | |
| 2650 tem = FRAME_ROOT_WINDOW (XFRAME (tem)); | |
| 2651 | |
| 2652 break; | |
| 2653 } | |
| 2654 | |
| 2655 window = tem; | |
| 2656 | |
| 2657 /* If we're in a combination window, find its first child and | |
| 2658 recurse on that. Otherwise, we've found the window we want. */ | |
| 2659 while (1) | |
| 2660 { | |
| 2661 if (!NILP (XWINDOW (window)->hchild)) | |
| 2662 window = XWINDOW (window)->hchild; | |
| 2663 else if (!NILP (XWINDOW (window)->vchild)) | |
| 2664 window = XWINDOW (window)->vchild; | |
| 2665 else break; | |
| 2666 while (tem = XWINDOW (window)->next, !NILP (tem)) | |
| 2667 window = tem; | |
| 2668 } | |
| 2669 } | |
| 2670 /* Which windows are acceptable? | |
| 2671 Exit the loop and accept this window if | |
| 2672 this isn't a minibuffer window, | |
| 2673 or we're accepting all minibuffer windows, | |
| 2674 or this is the active minibuffer and we are accepting that one, or | |
| 2675 we've come all the way around and we're back at the original window. */ | |
| 2676 while (MINI_WINDOW_P (XWINDOW (window)) | |
| 2677 && ! EQ (minibuf, Qt) | |
| 2678 && ! EQ (minibuf, window) | |
| 2679 && ! EQ (window, start_window)); | |
| 2680 | |
| 2681 return window; | |
| 2682 } | |
| 2683 | |
| 2684 DEFUN ("next-vertical-window", Fnext_vertical_window, 0, 1, 0, /* | |
| 2685 Return the next window which is vertically after WINDOW. | |
| 2686 */ | |
| 2687 (window)) | |
| 2688 { | |
| 2689 Lisp_Object root; | |
| 2690 struct window *w = decode_window (window); | |
| 793 | 2691 window = wrap_window (w); |
| 428 | 2692 |
| 2693 if (MINI_WINDOW_P (XWINDOW (window))) | |
| 2694 return Qnil; | |
| 2695 | |
| 2696 root = FRAME_ROOT_WINDOW (XFRAME (WINDOW_FRAME (XWINDOW (window)))); | |
| 2697 | |
| 2698 if (EQ (window, root)) | |
| 2699 { | |
| 2700 while (1) | |
| 2701 if (!NILP (XWINDOW (window)->hchild)) | |
| 2702 window = XWINDOW (window)->hchild; | |
| 2703 else if (!NILP (XWINDOW (window)->vchild)) | |
| 2704 window = XWINDOW (window)->vchild; | |
| 2705 else | |
| 2706 return window; | |
| 2707 } | |
| 2708 | |
| 2709 do | |
| 2710 { | |
| 2711 if (!NILP (XWINDOW (window)->parent) && | |
| 2712 !NILP (XWINDOW (XWINDOW (window)->parent)->vchild)) | |
| 2713 { | |
| 2714 if (!NILP (XWINDOW (window)->next)) | |
| 2715 return XWINDOW (window)->next; | |
| 2716 else | |
| 2717 window = XWINDOW (window)->parent; | |
| 2718 } | |
| 2719 else | |
| 2720 window = XWINDOW (window)->parent; | |
| 2721 } | |
| 2722 while (!EQ (window, root)); | |
| 2723 | |
| 2724 while (1) | |
| 2725 if (!NILP (XWINDOW (window)->hchild)) | |
| 2726 window = XWINDOW (window)->hchild; | |
| 2727 else if (!NILP (XWINDOW (window)->vchild)) | |
| 2728 window = XWINDOW (window)->vchild; | |
| 2729 else | |
| 2730 return window; | |
| 2731 } | |
| 2732 | |
| 2733 DEFUN ("other-window", Fother_window, 1, 3, "p", /* | |
| 444 | 2734 Select the COUNT'th different window on this frame. |
| 428 | 2735 All windows on current frame are arranged in a cyclic order. |
| 444 | 2736 This command selects the window COUNT steps away in that order. |
| 2737 A negative COUNT moves in the opposite order. | |
| 2738 | |
| 2739 By default, only the windows in the selected frame are considered. | |
| 2740 The optional argument WHICH-FRAMES changes this behavior: | |
| 2741 WHICH-FRAMES = `visible' means search windows on all visible frames. | |
| 448 | 2742 WHICH-FRAMES = 0 means search windows on all visible and iconified frames. |
| 444 | 2743 WHICH-FRAMES = t means search windows on all frames including invisible frames. |
| 2744 WHICH-FRAMES = a frame means search only windows on that frame. | |
| 2745 Anything else means restrict to the selected frame. | |
| 2746 | |
| 2747 The optional argument WHICH-DEVICES further clarifies on which devices | |
| 2748 to search for frames as specified by WHICH-FRAMES. This value is only | |
| 2749 meaningful if WHICH-FRAMES is non-nil. | |
| 2750 If nil or omitted, search all devices on the selected console. | |
| 2751 If a device, only search that device. | |
| 2752 If a console, search all devices on that console. | |
| 2753 If a device type, search all devices of that type. | |
| 2754 If `window-system', search all window-system devices. | |
| 2755 Any other non-nil value means search all devices. | |
| 428 | 2756 */ |
| 444 | 2757 (count, which_frames, which_devices)) |
| 428 | 2758 { |
| 2759 int i; | |
| 2760 Lisp_Object w; | |
| 2761 | |
| 444 | 2762 CHECK_INT (count); |
| 428 | 2763 w = Fselected_window (Qnil); |
| 444 | 2764 i = XINT (count); |
| 428 | 2765 |
| 2766 while (i > 0) | |
| 2767 { | |
| 444 | 2768 w = Fnext_window (w, Qnil, which_frames, which_devices); |
| 428 | 2769 i--; |
| 2770 } | |
| 2771 while (i < 0) | |
| 2772 { | |
| 444 | 2773 w = Fprevious_window (w, Qnil, which_frames, which_devices); |
| 428 | 2774 i++; |
| 2775 } | |
| 2776 Fselect_window (w, Qnil); | |
| 2777 return Qnil; | |
| 2778 } | |
| 2779 | |
| 2780 | |
| 2781 /* Look at all windows, performing an operation specified by TYPE | |
| 2782 with argument OBJ. | |
| 2783 | |
| 2784 If FRAMES is Qt, look at all frames, if Qnil, look at just the selected | |
| 2785 frame. If FRAMES is a frame, just look at windows on that frame. | |
| 2786 If MINI is non-zero, perform the operation on minibuffer windows too. | |
| 2787 */ | |
| 2788 | |
| 2789 enum window_loop | |
| 2790 { | |
| 2791 WINDOW_LOOP_UNUSED, | |
| 2792 GET_BUFFER_WINDOW, /* Arg is buffer */ | |
| 2793 GET_LRU_WINDOW, /* Arg is t for full-width windows only */ | |
| 2794 DELETE_OTHER_WINDOWS, /* Arg is window not to delete */ | |
| 2795 DELETE_BUFFER_WINDOWS, /* Arg is buffer */ | |
| 2796 GET_LARGEST_WINDOW, | |
| 2797 GET_BUFFER_WINDOW_COUNT, /* Arg is buffer */ | |
| 2798 GET_BUFFER_MRU_WINDOW /* Arg is buffer */ | |
| 2799 }; | |
| 2800 | |
| 2801 static Lisp_Object | |
| 2802 window_loop (enum window_loop type, | |
| 2803 Lisp_Object obj, | |
| 2804 int mini, | |
| 444 | 2805 Lisp_Object which_frames, |
| 428 | 2806 int dedicated_too, |
| 444 | 2807 Lisp_Object which_devices) |
| 428 | 2808 { |
| 448 | 2809 /* This function can GC if type == DELETE_BUFFER_WINDOWS */ |
| 428 | 2810 Lisp_Object w; |
| 2811 Lisp_Object best_window = Qnil; | |
| 2812 Lisp_Object next_window; | |
| 2813 Lisp_Object last_window; | |
| 2814 struct frame *frame; | |
| 2815 Lisp_Object frame_arg = Qt; | |
| 2816 int count = 0; /* for GET_BUFFER_WINDOW_COUNT */ | |
| 2817 /* #### I think the change of "precomputing" last_window and next_window | |
| 2818 * #### catch the lossage this is meant(?) to punt on... | |
| 2819 */ | |
| 2820 int lose_lose = 0; | |
| 2821 Lisp_Object devcons, concons; | |
| 2822 | |
| 2823 /* If we're only looping through windows on a particular frame, | |
| 2824 FRAME points to that frame. If we're looping through windows | |
| 2825 on all frames, FRAME is 0. */ | |
| 444 | 2826 if (FRAMEP (which_frames)) |
| 2827 frame = XFRAME (which_frames); | |
| 2828 else if (NILP (which_frames)) | |
| 428 | 2829 frame = selected_frame (); |
| 2830 else | |
| 2831 frame = 0; | |
| 442 | 2832 |
| 2833 /* FRAME_ARG is Qlambda to stick to one frame, | |
| 2834 Qvisible to consider all visible frames, | |
| 2835 or Qt otherwise. */ | |
| 428 | 2836 if (frame) |
| 2837 frame_arg = Qlambda; | |
| 444 | 2838 else if (ZEROP (which_frames)) |
| 2839 frame_arg = which_frames; | |
| 2840 else if (EQ (which_frames, Qvisible)) | |
| 2841 frame_arg = which_frames; | |
| 428 | 2842 |
| 2843 DEVICE_LOOP_NO_BREAK (devcons, concons) | |
| 2844 { | |
| 2845 Lisp_Object device = XCAR (devcons); | |
| 2846 Lisp_Object the_frame; | |
| 2847 | |
| 2848 if (frame) | |
| 793 | 2849 the_frame = wrap_frame (frame); |
| 428 | 2850 else |
| 2851 the_frame = DEVICE_SELECTED_FRAME (XDEVICE (device)); | |
| 2852 | |
| 2853 if (NILP (the_frame)) | |
| 2854 continue; | |
| 2855 | |
| 444 | 2856 if (!device_matches_device_spec (device, |
| 2857 NILP (which_devices) ? | |
| 2858 FRAME_CONSOLE (XFRAME (the_frame)) : | |
| 2859 which_devices)) | |
| 428 | 2860 continue; |
| 2861 | |
| 2862 /* Pick a window to start with. */ | |
| 2863 if (WINDOWP (obj)) | |
| 2864 w = obj; | |
| 2865 else | |
| 2866 w = FRAME_SELECTED_WINDOW (XFRAME (the_frame)); | |
| 2867 | |
| 2868 /* Figure out the last window we're going to mess with. Since | |
| 2869 Fnext_window, given the same options, is guaranteed to go in a | |
| 2870 ring, we can just use Fprevious_window to find the last one. | |
| 2871 | |
| 2872 We can't just wait until we hit the first window again, | |
| 2873 because it might be deleted. */ | |
| 2874 | |
| 707 | 2875 last_window = Fprevious_window (w, mini ? Qt : Qnil, frame_arg, device); |
| 428 | 2876 |
| 2877 best_window = Qnil; | |
| 2878 for (;;) | |
| 2879 { | |
| 2880 struct window *p = XWINDOW (w); | |
| 2881 | |
| 2882 /* Pick the next window now, since some operations will delete | |
| 2883 the current window. */ | |
| 442 | 2884 next_window = Fnext_window (w, mini ? Qt : Qnil, frame_arg, device); |
| 428 | 2885 |
| 2886 /* #### Still needed ?? */ | |
| 2887 /* Given the outstanding quality of the rest of this code, | |
| 2888 I feel no shame about putting this piece of shit in. */ | |
| 2889 if (++lose_lose >= 500) | |
| 707 | 2890 { |
| 2500 | 2891 /* Call to ABORT() added by Darryl Okahata (16 Nov. 2001), |
| 707 | 2892 at Ben's request, to catch any remaining bugs. |
| 2893 | |
| 2894 If you find that XEmacs is aborting here, and you | |
| 2895 need to be up and running ASAP, it should be safe to | |
| 2500 | 2896 comment out the following ABORT(), as long as you |
| 707 | 2897 leave the "break;" alone. */ |
| 2500 | 2898 ABORT(); |
| 707 | 2899 break; /* <--- KEEP THIS HERE! Do not delete! */ |
| 2900 } | |
| 428 | 2901 |
| 2902 /* Note that we do not pay attention here to whether | |
| 2903 the frame is visible, since Fnext_window skips non-visible frames | |
| 2904 if that is desired, under the control of frame_arg. */ | |
| 2905 if (! MINI_WINDOW_P (p) | |
| 2906 || (mini && minibuf_level > 0)) | |
| 2907 switch (type) | |
| 2908 { | |
| 2909 case GET_BUFFER_WINDOW: | |
| 2910 { | |
| 2911 if (XBUFFER (p->buffer) == XBUFFER (obj)) | |
| 2912 return w; | |
| 2913 break; | |
| 2914 } | |
| 2915 | |
| 2916 case GET_BUFFER_WINDOW_COUNT: | |
| 2917 { | |
| 2918 if (XBUFFER (p->buffer) == XBUFFER (obj)) | |
| 2919 count++; | |
| 2920 break; | |
| 2921 } | |
| 2922 | |
| 2923 case GET_LRU_WINDOW: | |
| 2924 { | |
| 2925 /* t as arg means consider only full-width windows */ | |
| 2926 if (!NILP (obj) | |
| 2927 && !window_full_width_p (p)) | |
| 2928 break; | |
| 2929 /* Ignore dedicated windows and minibuffers. */ | |
| 2930 if (MINI_WINDOW_P (p) | |
| 2931 || (dedicated_too ? 0 : !NILP (p->dedicated))) | |
| 2932 break; | |
| 2933 if (NILP (best_window) | |
| 2934 || (XINT (XWINDOW (best_window)->use_time) | |
| 2935 > XINT (p->use_time))) | |
| 2936 best_window = w; | |
| 2937 break; | |
| 2938 } | |
| 2939 | |
| 2940 case GET_BUFFER_MRU_WINDOW: | |
| 2941 { | |
| 2942 /* #### what about the first check in GET_LRU_WINDOW? */ | |
| 2943 /* Ignore dedicated windows and minibuffers. */ | |
| 2944 if (MINI_WINDOW_P (p) | |
| 2945 || (dedicated_too ? 0 : !NILP (p->dedicated))) | |
| 2946 break; | |
| 2947 | |
| 2948 if (XBUFFER (p->buffer) == XBUFFER (obj)) | |
| 2949 { | |
| 2950 if (NILP (best_window) | |
| 2951 || (XINT (XWINDOW (best_window)->use_time) | |
| 2952 < XINT (p->use_time))) | |
| 2953 best_window = w; | |
| 2954 } | |
| 2955 break; | |
| 2956 } | |
| 2957 | |
| 2958 case DELETE_OTHER_WINDOWS: | |
| 2959 { | |
| 2960 /* Don't delete the last window on a frame; this can | |
| 2961 happen when the minibuffer is selected, and would | |
| 2962 cause the frame to be deleted. */ | |
| 2963 if (p != XWINDOW (obj) && !TOP_LEVEL_WINDOW_P (XWINDOW (w))) | |
| 2964 Fdelete_window (w, Qnil); | |
| 2965 break; | |
| 2966 } | |
| 2967 | |
| 2968 case DELETE_BUFFER_WINDOWS: | |
| 2969 { | |
| 2970 if (EQ (p->buffer, obj)) | |
| 2971 { | |
| 2972 struct frame *f = XFRAME (WINDOW_FRAME (p)); | |
| 2973 | |
| 2974 /* If this window is dedicated, and in a frame | |
| 2975 of its own, kill the frame. */ | |
| 2976 if (EQ (w, FRAME_ROOT_WINDOW (f)) | |
| 2977 && !NILP (p->dedicated) | |
| 1979 | 2978 && (allow_deletion_of_last_visible_frame |
| 2979 || other_visible_frames (f))) | |
| 428 | 2980 { |
| 2981 /* Skip the other windows on this frame. | |
| 2982 There might be one, the minibuffer! */ | |
| 2983 if (! EQ (w, last_window)) | |
| 2984 while (f == XFRAME (WINDOW_FRAME | |
| 2985 (XWINDOW (next_window)))) | |
| 2986 { | |
| 2987 /* As we go, check for the end of the | |
| 2988 loop. We mustn't start going | |
| 2989 around a second time. */ | |
| 2990 if (EQ (next_window, last_window)) | |
| 2991 { | |
| 2992 last_window = w; | |
| 2993 break; | |
| 2994 } | |
| 2995 next_window = Fnext_window (next_window, | |
| 2996 mini ? Qt : Qnil, | |
| 2997 frame_arg, Qt); | |
| 2998 } | |
| 2999 /* Now we can safely delete the frame. */ | |
| 3000 Fdelete_frame (WINDOW_FRAME (p), Qnil); | |
| 3001 } | |
| 3002 else | |
| 3003 /* If we're deleting the buffer displayed in | |
| 3004 the only window on the frame, find a new | |
| 3005 buffer to display there. */ | |
| 3006 if (NILP (p->parent)) | |
| 3007 { | |
| 3008 Lisp_Object new_buffer; | |
| 3009 new_buffer = Fother_buffer (obj, Qnil, Qnil); | |
| 3010 if (NILP (new_buffer)) | |
| 3011 new_buffer = Fget_buffer_create (QSscratch); | |
| 440 | 3012 Fset_window_buffer (w, new_buffer, Qnil); |
| 428 | 3013 if (EQ (w, Fselected_window (Qnil))) |
| 3014 Fset_buffer (p->buffer); | |
| 3015 } | |
| 3016 else | |
| 3017 Fdelete_window (w, Qnil); | |
| 3018 } | |
| 3019 break; | |
| 3020 } | |
| 3021 | |
| 3022 case GET_LARGEST_WINDOW: | |
| 3023 { | |
| 3024 /* Ignore dedicated windows and minibuffers. */ | |
| 3025 if (MINI_WINDOW_P (p) | |
| 3026 || (dedicated_too ? 0 : !NILP (p->dedicated))) | |
| 3027 break; | |
| 3028 { | |
| 3029 /* write the check as follows to avoid tripping | |
| 3030 error_check_window() --ben */ | |
| 3031 struct window *b = NILP (best_window) ? 0 : | |
| 3032 XWINDOW (best_window); | |
| 3033 if (NILP (best_window) | |
| 3034 || ((WINDOW_HEIGHT (p) * WINDOW_WIDTH (p)) | |
| 3035 > (WINDOW_HEIGHT (b) * WINDOW_WIDTH (b)))) | |
| 3036 best_window = w; | |
| 3037 } | |
| 3038 break; | |
| 3039 } | |
| 3040 | |
| 3041 default: | |
| 2500 | 3042 ABORT (); |
| 428 | 3043 } |
| 3044 | |
| 3045 if (EQ (w, last_window)) | |
| 3046 break; | |
| 3047 | |
| 3048 w = next_window; | |
| 3049 } | |
| 3050 } | |
| 3051 | |
| 3052 return type == GET_BUFFER_WINDOW_COUNT ? make_int (count) : best_window; | |
| 3053 } | |
| 3054 | |
| 3055 #if 0 /* not currently used */ | |
| 3056 | |
| 3057 int | |
| 3058 buffer_window_count (struct buffer *b, struct frame *f) | |
| 3059 { | |
| 3060 Lisp_Object buffer, frame; | |
| 3061 | |
| 793 | 3062 frame = wrap_frame (f); |
| 3063 buffer = wrap_buffer (b); | |
| 428 | 3064 |
| 3065 return XINT (window_loop (GET_BUFFER_WINDOW_COUNT, buffer, 0, frame, 1, | |
| 3066 Qnil)); | |
| 3067 } | |
| 3068 | |
| 3069 int | |
| 3070 buffer_window_mru (struct window *w) | |
| 3071 { | |
| 3072 Lisp_Object window = | |
| 3073 window_loop (GET_BUFFER_MRU_WINDOW, w->buffer, 0, w->frame, 1, Qnil); | |
| 3074 | |
| 3075 if (NILP (window)) | |
| 3076 return 0; | |
| 3077 else if (XWINDOW (window) == w) | |
| 3078 return 1; | |
| 3079 else | |
| 3080 return 0; | |
| 3081 } | |
| 3082 | |
| 3083 #endif | |
| 3084 | |
| 3085 | |
| 3086 DEFUN ("get-lru-window", Fget_lru_window, 0, 2, 0, /* | |
| 3087 Return the window least recently selected or used for display. | |
| 444 | 3088 |
| 3089 By default, only the windows in the selected frame are considered. | |
| 3090 The optional argument WHICH-FRAMES changes this behavior: | |
| 3091 If optional argument WHICH-FRAMES is `visible', search all visible frames. | |
| 3092 If WHICH-FRAMES is 0, search all visible and iconified frames. | |
| 3093 If WHICH-FRAMES is t, search all frames. | |
| 3094 If WHICH-FRAMES is nil, search only the selected frame. | |
| 3095 If WHICH-FRAMES is a frame, search only that frame. | |
| 3096 | |
| 3097 The optional argument WHICH-DEVICES further clarifies on which devices | |
| 3098 to search for frames as specified by WHICH-FRAMES. This value is only | |
| 3099 meaningful if WHICH-FRAMES is non-nil. | |
| 3100 If nil or omitted, search all devices on the selected console. | |
| 3101 If a device, only search that device. | |
| 3102 If a console, search all devices on that console. | |
| 3103 If a device type, search all devices of that type. | |
| 3104 If `window-system', search all devices on window-system consoles. | |
| 3105 Any other non-nil value means search all devices. | |
| 428 | 3106 */ |
| 444 | 3107 (which_frames, which_devices)) |
| 428 | 3108 { |
| 3109 Lisp_Object w; | |
| 3110 /* First try for a non-dedicated window that is full-width */ | |
| 444 | 3111 w = window_loop (GET_LRU_WINDOW, Qt, 0, which_frames, 0, which_devices); |
| 428 | 3112 if (!NILP (w) && !EQ (w, Fselected_window (Qnil))) |
| 3113 return w; | |
| 3114 | |
| 3115 /* Then try for any non-dedicated window */ | |
| 444 | 3116 w = window_loop (GET_LRU_WINDOW, Qnil, 0, which_frames, 0, which_devices); |
| 428 | 3117 if (!NILP (w) && !EQ (w, Fselected_window (Qnil))) |
| 3118 return w; | |
| 3119 | |
| 3120 #if 0 | |
| 3121 /* FSFmacs never returns a dedicated window here. If we do, | |
| 3122 it makes `display-buffer' not work right. #### All of this | |
| 3123 shit is so disgusting and awful that it needs to be rethought | |
| 3124 from scratch. */ | |
| 3125 /* then try for a dedicated window that is full-width */ | |
| 444 | 3126 w = window_loop (GET_LRU_WINDOW, Qt, 0, which_frames, 1, which_devices); |
| 428 | 3127 if (!NILP (w) && !EQ (w, Fselected_window (Qnil))) |
| 3128 return w; | |
| 3129 | |
| 3130 /* If none of them, then all windows, dedicated or not. */ | |
| 444 | 3131 w = window_loop (GET_LRU_WINDOW, Qnil, 0, which_frames, 1, which_devices); |
| 428 | 3132 |
| 3133 /* At this point we damn well better have found something. */ | |
|
5050
6f2158fa75ed
Fix quick-build, use asserts() in place of ABORT()
Ben Wing <ben@xemacs.org>
parents:
4967
diff
changeset
|
3134 assert (!NILP (w)); |
| 428 | 3135 #endif |
| 3136 | |
| 3137 return w; | |
| 3138 } | |
| 3139 | |
| 3140 DEFUN ("get-largest-window", Fget_largest_window, 0, 2, 0, /* | |
| 3141 Return the window largest in area. | |
| 444 | 3142 |
| 3143 By default, only the windows in the selected frame are considered. | |
| 3144 The optional argument WHICH-FRAMES changes this behavior: | |
| 3145 If optional argument WHICH-FRAMES is `visible', search all visible frames. | |
| 3146 If WHICH-FRAMES is 0, search all visible and iconified frames. | |
| 3147 If WHICH-FRAMES is t, search all frames. | |
| 3148 If WHICH-FRAMES is nil, search only the selected frame. | |
| 3149 If WHICH-FRAMES is a frame, search only that frame. | |
| 3150 | |
| 3151 The optional argument WHICH-DEVICES further clarifies on which devices | |
| 3152 to search for frames as specified by WHICH-FRAMES. This value is only | |
| 3153 meaningful if WHICH-FRAMES is non-nil. | |
| 3154 If nil or omitted, search all devices on the selected console. | |
| 3155 If a device, only search that device. | |
| 3156 If a console, search all devices on that console. | |
| 3157 If a device type, search all devices of that type. | |
| 3158 If `window-system', search all devices on window-system consoles. | |
| 3159 Any other non-nil value means search all devices. | |
| 428 | 3160 */ |
| 444 | 3161 (which_frames, which_devices)) |
| 428 | 3162 { |
| 3163 /* Don't search dedicated windows because FSFmacs doesn't. | |
| 3164 This stuff is all black magic so don't try to apply common | |
| 3165 sense to it. */ | |
| 444 | 3166 return window_loop (GET_LARGEST_WINDOW, Qnil, 0, |
| 3167 which_frames, 0, which_devices); | |
| 428 | 3168 } |
| 3169 | |
| 3170 DEFUN ("get-buffer-window", Fget_buffer_window, 1, 3, 0, /* | |
| 3171 Return a window currently displaying BUFFER, or nil if none. | |
| 444 | 3172 |
| 3173 By default, only the windows in the selected frame are considered. | |
| 3174 The optional argument WHICH-FRAMES changes this behavior: | |
| 3175 If optional argument WHICH-FRAMES is `visible', search all visible frames. | |
| 3176 If WHICH-FRAMES is 0, search all visible and iconified frames. | |
| 3177 If WHICH-FRAMES is t, search all frames. | |
| 3178 If WHICH-FRAMES is nil, search only the selected frame. | |
| 3179 If WHICH-FRAMES is a frame, search only that frame. | |
| 3180 | |
| 3181 The optional argument WHICH-DEVICES further clarifies on which devices | |
| 3182 to search for frames as specified by WHICH-FRAMES. This value is only | |
| 3183 meaningful if WHICH-FRAMES is non-nil. | |
| 3184 If nil or omitted, search all devices on the selected console. | |
| 3185 If a device, only search that device. | |
| 3186 If a console, search all devices on that console. | |
| 3187 If a device type, search all devices of that type. | |
| 3188 If `window-system', search all devices on window-system consoles. | |
| 3189 Any other non-nil value means search all devices. | |
| 428 | 3190 */ |
| 444 | 3191 (buffer, which_frames, which_devices)) |
| 428 | 3192 { |
| 3193 buffer = Fget_buffer (buffer); | |
| 3194 if (BUFFERP (buffer)) | |
| 3195 /* Search dedicated windows too. (Doesn't matter here anyway.) */ | |
| 444 | 3196 return window_loop (GET_BUFFER_WINDOW, buffer, 1, |
| 3197 which_frames, 1, which_devices); | |
| 428 | 3198 else |
| 3199 return Qnil; | |
| 3200 } | |
| 3201 | |
| 3202 /* These functions used to be `buffer-left-margin-pixel-width', etc. | |
| 3203 but there is no sensible way to implement those functions, since | |
| 3204 you can't in general derive a window from a buffer. */ | |
| 3205 | |
| 3206 DEFUN ("window-left-margin-pixel-width", Fwindow_left_margin_pixel_width, | |
| 3207 0, 1, 0, /* | |
| 3208 Return the width in pixels of the left outside margin of window WINDOW. | |
| 3209 If WINDOW is nil, the selected window is assumed. | |
| 3210 */ | |
| 3211 (window)) | |
| 3212 { | |
| 3213 return make_int (window_left_margin_width (decode_window (window))); | |
| 3214 } | |
| 3215 | |
| 3216 DEFUN ("window-right-margin-pixel-width", Fwindow_right_margin_pixel_width, | |
| 3217 0, 1, 0, /* | |
| 3218 Return the width in pixels of the right outside margin of window WINDOW. | |
| 3219 If WINDOW is nil, the selected window is assumed. | |
| 3220 */ | |
| 3221 (window)) | |
| 3222 { | |
| 3223 return make_int (window_right_margin_width (decode_window (window))); | |
| 3224 } | |
| 3225 | |
| 3226 DEFUN ("delete-other-windows", Fdelete_other_windows, 0, 1, "", /* | |
| 3227 Make WINDOW (or the selected window) fill its frame. | |
| 3228 Only the frame WINDOW is on is affected. | |
| 3229 This function tries to reduce display jumps | |
| 3230 by keeping the text previously visible in WINDOW | |
| 3231 in the same place on the frame. Doing this depends on | |
| 3232 the value of (window-start WINDOW), so if calling this function | |
| 3233 in a program gives strange scrolling, make sure the window-start | |
| 3234 value is reasonable when this function is called. | |
| 3235 */ | |
| 3236 (window)) | |
| 3237 { | |
| 3238 struct window *w = decode_window (window); | |
| 1207 | 3239 struct buffer *b; |
| 665 | 3240 Charbpos start_pos; |
| 428 | 3241 int old_top = WINDOW_TOP (w); |
| 3242 | |
| 1207 | 3243 if (NILP (WINDOW_BUFFER (w))) |
| 3244 invalid_operation ("Can't delete other windows of combination", window); | |
| 3245 | |
| 793 | 3246 window = wrap_window (w); |
| 1207 | 3247 b = XBUFFER (WINDOW_BUFFER (w)); |
| 428 | 3248 |
| 3249 if (MINI_WINDOW_P (w) && old_top > 0) | |
| 563 | 3250 invalid_operation ("Can't expand minibuffer to full frame", Qunbound); |
| 428 | 3251 |
| 3252 /* Ignore dedicated windows. */ | |
| 3253 window_loop (DELETE_OTHER_WINDOWS, window, 0, w->frame, 0, Qnil); | |
| 3254 | |
| 3255 start_pos = marker_position (w->start[CURRENT_DISP]); | |
| 3256 | |
| 3257 /* Try to minimize scrolling, by setting the window start to the | |
| 3258 point which will cause the text at the old window start to be at | |
| 3259 the same place on the frame. But don't try to do this if the | |
| 3260 window start is outside the visible portion (as might happen when | |
| 3261 the display is not current, due to typeahead). */ | |
| 3262 if (start_pos >= BUF_BEGV (b) && start_pos <= BUF_ZV (b) | |
| 3263 && !MINI_WINDOW_P (w)) | |
| 3264 { | |
| 665 | 3265 Charbpos new_start = start_with_line_at_pixpos (w, start_pos, old_top); |
| 428 | 3266 |
| 3267 if (new_start >= BUF_BEGV (b) && new_start <= BUF_ZV (b)) | |
| 3268 { | |
| 3269 Fset_marker (w->start[CURRENT_DISP], make_int (new_start), | |
| 3270 w->buffer); | |
| 3271 w->start_at_line_beg = beginning_of_line_p (b, new_start); | |
| 3272 } | |
| 3273 /* We need to do this, so that the window-scroll-functions | |
| 3274 get called. */ | |
| 3275 w->force_start = 1; | |
| 3276 } | |
| 3277 | |
| 3278 return Qnil; | |
| 3279 } | |
| 3280 | |
| 3281 DEFUN ("delete-windows-on", Fdelete_windows_on, 1, 3, | |
| 3282 "bDelete windows on (buffer): ", /* | |
| 3283 Delete all windows showing BUFFER. | |
| 444 | 3284 |
| 3285 Optional second argument WHICH-FRAMES controls which frames are affected. | |
| 428 | 3286 If nil or omitted, delete all windows showing BUFFER in any frame. |
| 3287 If t, delete only windows showing BUFFER in the selected frame. | |
| 3288 If `visible', delete all windows showing BUFFER in any visible frame. | |
| 3289 If a frame, delete only windows showing BUFFER in that frame. | |
| 444 | 3290 Warning: WHICH-FRAMES has the same meaning as with `next-window', |
| 3291 except that the meanings of nil and t are reversed. | |
| 3292 | |
| 3293 The optional third argument WHICH-DEVICES further clarifies on which | |
| 3294 devices to search for frames as specified by WHICH-FRAMES. This value | |
| 3295 is only meaningful if WHICH-FRAMES is not t. | |
| 3296 If nil or omitted, search only the selected console. | |
| 3297 If a device, only search that device. | |
| 3298 If a console, search all devices on that console. | |
| 3299 If a device type, search all devices of that type. | |
| 3300 If `window-system', search all devices on a window system. | |
| 3301 Any other non-nil value means search all devices. | |
| 428 | 3302 */ |
| 444 | 3303 (buffer, which_frames, which_devices)) |
| 428 | 3304 { |
| 3305 /* This function can GC */ | |
| 444 | 3306 buffer = Fget_buffer (buffer); |
| 3307 CHECK_BUFFER (buffer); | |
| 3308 | |
| 3309 /* WHICH-FRAMES values t and nil mean the opposite of what | |
| 3310 window_loop expects. */ | |
| 3311 if (EQ (which_frames, Qnil)) | |
| 3312 which_frames = Qt; | |
| 3313 else if (EQ (which_frames, Qt)) | |
| 3314 which_frames = Qnil; | |
| 3315 | |
| 3316 /* Ignore dedicated windows. */ | |
| 3317 window_loop (DELETE_BUFFER_WINDOWS, buffer, 0, | |
| 3318 which_frames, 0, which_devices); | |
| 428 | 3319 return Qnil; |
| 3320 } | |
| 3321 | |
| 448 | 3322 static Lisp_Object |
| 3323 list_windows (struct window *w, Lisp_Object value) | |
| 3324 { | |
| 3325 for (;;) | |
| 3326 { | |
| 3327 if (!NILP (w->hchild)) | |
| 3328 value = list_windows (XWINDOW (w->hchild), value); | |
| 3329 else if (!NILP (w->vchild)) | |
| 3330 value = list_windows (XWINDOW (w->vchild), value); | |
| 3331 else | |
| 3332 { | |
| 793 | 3333 Lisp_Object window = wrap_window (w); |
| 3334 | |
| 448 | 3335 value = Fcons (window, value); |
| 3336 } | |
| 3337 if (NILP (w->next)) | |
| 3338 break; | |
| 3339 w = XWINDOW (w->next); | |
| 3340 } | |
| 3341 return value; | |
| 3342 } | |
| 3343 | |
| 3344 static Lisp_Object | |
| 3345 list_all_windows (Lisp_Object frame_spec, Lisp_Object device_spec) | |
| 3346 { | |
| 3347 Lisp_Object devcons, concons; | |
| 3348 Lisp_Object retval = Qnil; | |
| 3349 | |
| 3350 DEVICE_LOOP_NO_BREAK (devcons, concons) | |
| 3351 { | |
| 3352 Lisp_Object frame_list, the_window; | |
| 3353 Lisp_Object device, tail; | |
| 3354 | |
| 3355 device = XCAR (devcons); | |
| 3356 frame_list = DEVICE_FRAME_LIST (XDEVICE (device)); | |
| 3357 | |
| 3358 LIST_LOOP (tail, frame_list) | |
| 3359 { | |
| 3360 if ((NILP (frame_spec) | |
| 3361 && !EQ (XCAR (tail), DEVICE_SELECTED_FRAME (XDEVICE (device)))) | |
| 3362 || (EQ (frame_spec, Qvisible) | |
| 3363 && !FRAME_VISIBLE_P (XFRAME (XCAR (tail)))) | |
| 3364 || (FRAMEP (frame_spec) | |
| 3365 && !EQ (frame_spec, XCAR (tail))) | |
| 3366 || (!NILP (frame_spec) | |
| 3367 && !device_matches_device_spec (device, | |
| 3368 NILP (device_spec) ? | |
| 3369 Vselected_console : | |
| 3370 device_spec))) | |
| 3371 continue; | |
| 3372 the_window = FRAME_ROOT_WINDOW (XFRAME (XCAR (tail))); | |
| 3373 retval = list_windows (XWINDOW (the_window), retval); | |
| 3374 } | |
| 3375 } | |
| 3376 return Fnreverse (retval); | |
| 3377 } | |
| 3378 | |
| 444 | 3379 DEFUN ("replace-buffer-in-windows", Freplace_buffer_in_windows, 1, 3, |
| 428 | 3380 "bReplace buffer in windows: ", /* |
| 3381 Replace BUFFER with some other buffer in all windows showing it. | |
| 444 | 3382 |
| 3383 Optional second argument WHICH-FRAMES controls which frames are affected. | |
| 3384 If nil or omitted, all frames are affected. | |
| 3385 If t, only the selected frame is affected. | |
| 3386 If `visible', all visible frames are affected. | |
| 3387 If a frame, only that frame is affected. | |
| 3388 Warning: WHICH-FRAMES has the same meaning as with `next-window', | |
| 3389 except that the meanings of nil and t are reversed. | |
| 3390 | |
| 3391 The optional third argument WHICH-DEVICES further clarifies on which | |
| 3392 devices to search for frames as specified by WHICH-FRAMES. This value | |
| 3393 is only meaningful if WHICH-FRAMES is not t. | |
| 3394 If nil or omitted, search only the selected console. | |
| 3395 If a device, only search that device. | |
| 3396 If a console, search all devices on that console. | |
| 3397 If a device type, search all devices of that type. | |
| 3398 If `window-system', search all devices on a window system. | |
| 3399 Any other non-nil value means search all devices. | |
| 428 | 3400 */ |
| 444 | 3401 (buffer, which_frames, which_devices)) |
| 428 | 3402 { |
| 3403 /* This function can GC */ | |
| 448 | 3404 Lisp_Object window_list; |
| 3405 Lisp_Object tail; | |
| 3406 struct gcpro gcpro1, gcpro2; | |
| 3407 | |
| 444 | 3408 if (EQ (which_frames, Qnil)) |
| 3409 which_frames = Qt; | |
| 3410 else if (EQ (which_frames, Qt)) | |
| 3411 which_frames = Qnil; | |
| 448 | 3412 window_list = list_all_windows (which_frames, which_devices); |
| 3413 | |
| 3414 buffer = Fget_buffer (buffer); | |
| 3415 CHECK_BUFFER (buffer); | |
| 3416 | |
| 3417 GCPRO2 (window_list, buffer); | |
| 3418 LIST_LOOP (tail, window_list) | |
| 3419 { | |
| 3420 Lisp_Object window = XCAR (tail); | |
| 3421 if (!MINI_WINDOW_P (XWINDOW (window)) | |
| 3422 && EQ (XWINDOW (window)->buffer, buffer)) | |
| 3423 { | |
| 3424 Lisp_Object another_buffer = Fother_buffer (buffer, Qnil, Qnil); | |
| 3425 Lisp_Object frame = WINDOW_FRAME (XWINDOW (window)); | |
| 3426 if (NILP (another_buffer)) | |
| 3427 another_buffer = Fget_buffer_create (QSscratch); | |
| 3428 if (!NILP (XWINDOW (window)->dedicated) | |
| 3429 && EQ (window, | |
| 3430 FRAME_ROOT_WINDOW (XFRAME (frame))) | |
| 1979 | 3431 && (allow_deletion_of_last_visible_frame |
| 3432 || other_visible_frames (XFRAME (frame)))) | |
| 448 | 3433 { |
| 3434 delete_frame_internal (XFRAME (frame), 0, 0, 0); /* GC */ | |
| 3435 } | |
| 3436 else | |
| 3437 { | |
| 3438 Fset_window_buffer (window, another_buffer, Qnil); | |
| 3439 if (EQ (window, Fselected_window (Qnil))) | |
| 3440 Fset_buffer (XWINDOW (window)->buffer); | |
| 3441 } | |
| 3442 } | |
| 3443 } | |
| 3444 UNGCPRO; | |
| 428 | 3445 return Qnil; |
| 3446 } | |
| 3447 | |
| 3448 /* The smallest acceptable dimensions for a window. Anything smaller | |
| 3449 might crash Emacs. */ | |
| 3450 #define MIN_SAFE_WINDOW_WIDTH (2) | |
| 3451 #define MIN_SAFE_WINDOW_HEIGHT (2) | |
| 3452 | |
| 3453 /* Make sure that window_min_height and window_min_width are | |
| 3454 not too small; if they are, set them to safe minima. */ | |
| 3455 | |
| 3456 static void | |
| 3457 check_min_window_sizes (void) | |
| 3458 { | |
| 3459 /* Smaller values might permit a crash. */ | |
| 3460 if (window_min_width < MIN_SAFE_WINDOW_WIDTH) | |
| 3461 window_min_width = MIN_SAFE_WINDOW_WIDTH; | |
| 3462 if (window_min_height < MIN_SAFE_WINDOW_HEIGHT) | |
| 3463 window_min_height = MIN_SAFE_WINDOW_HEIGHT; | |
| 3464 } | |
| 3465 | |
| 440 | 3466 static int |
| 3467 frame_min_height (struct frame *frame) | |
| 3468 { | |
| 3469 /* For height, we have to see whether the frame has a minibuffer, and | |
| 3470 whether it wants a modeline. */ | |
| 3471 return (FRAME_MINIBUF_ONLY_P (frame) ? MIN_SAFE_WINDOW_HEIGHT - 1 | |
| 3472 : (! FRAME_HAS_MINIBUF_P (frame)) ? MIN_SAFE_WINDOW_HEIGHT | |
| 3473 : 2 * MIN_SAFE_WINDOW_HEIGHT - 1); | |
| 3474 } | |
| 3475 | |
| 3476 /* Return non-zero if both frame sizes are less than or equal to | |
| 3477 minimal allowed values. ROWS and COLS are in characters */ | |
|
5047
07dcc7000bbf
put width before height consistently, fix a real bug found in the process
Ben Wing <ben@xemacs.org>
parents:
5043
diff
changeset
|
3478 static int |
|
07dcc7000bbf
put width before height consistently, fix a real bug found in the process
Ben Wing <ben@xemacs.org>
parents:
5043
diff
changeset
|
3479 frame_size_valid_p (struct frame *frame, int cols, int rows) |
| 440 | 3480 { |
| 3481 return (rows >= frame_min_height (frame) | |
| 3482 && cols >= MIN_SAFE_WINDOW_WIDTH); | |
| 3483 } | |
| 3484 | |
| 3485 /* Return non-zero if both frame sizes are less than or equal to | |
| 3486 minimal allowed values. WIDTH and HEIGHT are in pixels */ | |
| 3487 int | |
| 3488 frame_pixsize_valid_p (struct frame *frame, int width, int height) | |
| 3489 { | |
| 3490 int rows, cols; | |
| 5043 | 3491 pixel_to_char_size (frame, width, height, &cols, &rows); |
|
5047
07dcc7000bbf
put width before height consistently, fix a real bug found in the process
Ben Wing <ben@xemacs.org>
parents:
5043
diff
changeset
|
3492 return frame_size_valid_p (frame, cols, rows); |
| 440 | 3493 } |
| 3494 | |
| 428 | 3495 /* If *ROWS or *COLS are too small a size for FRAME, set them to the |
| 3496 minimum allowable size. */ | |
| 3497 void | |
|
5047
07dcc7000bbf
put width before height consistently, fix a real bug found in the process
Ben Wing <ben@xemacs.org>
parents:
5043
diff
changeset
|
3498 check_frame_size (struct frame *frame, int *cols, int *rows) |
| 428 | 3499 { |
| 440 | 3500 int min_height = frame_min_height (frame); |
| 5043 | 3501 int min_pixwidth, min_pixheight; |
| 3502 int min_geomwidth, min_geomheight; | |
| 3503 | |
| 3504 /* There is no char_to_frame_unit_size(). This can be done with | |
| 3505 frame_conversion_internal(), but that's currently static, and we can | |
| 3506 do it fine with two steps, as follows. */ | |
| 3507 char_to_pixel_size (frame, MIN_SAFE_WINDOW_WIDTH, min_height, | |
| 3508 &min_pixwidth, &min_pixheight); | |
| 3509 pixel_to_frame_unit_size (frame, min_pixwidth, min_pixheight, | |
| 3510 &min_geomwidth, &min_geomheight); | |
| 3511 if (*rows < min_geomheight) | |
| 3512 *rows = min_geomheight; | |
| 3513 if (*cols < min_geomwidth) | |
| 3514 *cols = min_geomwidth; | |
| 428 | 3515 } |
| 3516 | |
| 3517 /* Normally the window is deleted if it gets too small. | |
| 3518 nodelete nonzero means do not do this. | |
| 3519 (The caller should check later and do so if appropriate) */ | |
| 3520 static void | |
| 3521 set_window_pixsize (Lisp_Object window, int new_pixsize, int nodelete, | |
| 3522 int set_height) | |
| 3523 { | |
| 3524 struct window *w = XWINDOW (window); | |
| 3525 struct frame *f = XFRAME (w->frame); | |
| 3526 struct window *c; | |
| 3527 int old_pixsize = (set_height ? WINDOW_HEIGHT (w) : WINDOW_WIDTH (w)); | |
| 3528 Lisp_Object child, minor_kid, major_kid; | |
| 3529 int minsize; | |
| 3530 int line_size; | |
| 3531 int defheight, defwidth; | |
| 3532 | |
|
5047
07dcc7000bbf
put width before height consistently, fix a real bug found in the process
Ben Wing <ben@xemacs.org>
parents:
5043
diff
changeset
|
3533 default_face_width_and_height (window, &defwidth, &defheight); |
| 428 | 3534 line_size = (set_height ? defheight : defwidth); |
| 3535 | |
| 3536 check_min_window_sizes (); | |
| 3537 | |
| 3538 minsize = (set_height ? window_min_height : window_min_width); | |
| 3539 minsize *= line_size; | |
| 3540 | |
| 3541 if (!nodelete | |
| 3542 && !TOP_LEVEL_WINDOW_P (w) | |
|
4375
74e0e1131e01
Update window-size computation.
Mike Sperber <sperber@deinprogramm.de>
parents:
3707
diff
changeset
|
3543 && (new_pixsize + window_modeline_height (w)) < minsize) |
| 428 | 3544 { |
| 3545 Fdelete_window (window, Qnil); | |
| 3546 return; | |
| 3547 } | |
| 3548 | |
| 3549 SET_LAST_MODIFIED (w, 0); | |
| 3550 SET_LAST_FACECHANGE (w); | |
| 3551 MARK_FRAME_WINDOWS_STRUCTURE_CHANGED (f); /* multiple windows affected */ | |
| 3552 if (set_height) | |
| 3553 { | |
| 3554 WINDOW_HEIGHT (w) = new_pixsize; | |
| 3555 major_kid = w->vchild; | |
| 3556 minor_kid = w->hchild; | |
| 3557 } | |
| 3558 else | |
| 3559 { | |
| 3560 WINDOW_WIDTH (w) = new_pixsize; | |
| 3561 major_kid = w->hchild; | |
| 3562 minor_kid = w->vchild; | |
| 3563 } | |
| 3564 | |
| 3565 if (!NILP (minor_kid)) | |
| 3566 { | |
| 3567 for (child = minor_kid; !NILP (child); child = XWINDOW (child)->next) | |
| 3568 { | |
| 3569 if (set_height) | |
| 3570 WINDOW_TOP (XWINDOW (child)) = WINDOW_TOP (w); | |
| 3571 else | |
| 3572 WINDOW_LEFT (XWINDOW (child)) = WINDOW_LEFT (w); | |
| 3573 | |
| 3574 set_window_pixsize (child, new_pixsize, nodelete, set_height); | |
| 3575 } | |
| 3576 } | |
| 3577 else if (!NILP (major_kid)) | |
| 3578 { | |
| 3579 int last_pos, last_old_pos, pos, old_pos, first; | |
| 3580 int pixel_adj_left = new_pixsize - old_pixsize; | |
| 3581 int div_val = old_pixsize << 1; | |
| 3582 | |
| 3583 /* | |
| 3584 * Previously we bailed out here if there was no size change. | |
| 3585 * (pixel_adj_left == 0) But this broke toolbar updates. If a | |
| 3586 * toolbar appears or disappears, windows may not change size, | |
| 3587 * but their top and left coordinates need to be updated. | |
| 3588 * | |
| 3589 * So we don't bail until after the loop below. | |
| 3590 */ | |
| 3591 | |
| 3592 last_pos = first = (set_height ? WINDOW_TOP (w) : WINDOW_LEFT (w)); | |
| 3593 last_old_pos = 0; | |
| 3594 | |
| 3595 for (child = major_kid; !NILP (child); child = c->next) | |
| 3596 { | |
| 3597 c = XWINDOW (child); | |
| 3598 | |
| 3599 if (set_height) | |
| 3600 { | |
| 3601 old_pos = last_old_pos + WINDOW_HEIGHT (c); | |
| 3602 WINDOW_TOP (c) = last_pos; | |
| 3603 } | |
| 3604 else | |
| 3605 { | |
| 3606 old_pos = last_old_pos + WINDOW_WIDTH (c); | |
| 3607 WINDOW_LEFT (c) = last_pos; | |
| 3608 } | |
| 3609 | |
| 3610 pos = (((old_pos * new_pixsize) << 1) + old_pixsize) / div_val; | |
| 3611 /* All but the last window should have a height which is | |
| 3612 a multiple of the default line height. */ | |
| 3613 if (!NILP (c->next)) | |
|
4446
c32b3d10c56b
Fix problem with `resize-minibuffer-mode'.
Mike Sperber <sperber@deinprogramm.de>
parents:
4375
diff
changeset
|
3614 { |
|
c32b3d10c56b
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Mike Sperber <sperber@deinprogramm.de>
parents:
4375
diff
changeset
|
3615 /* |
|
c32b3d10c56b
Fix problem with `resize-minibuffer-mode'.
Mike Sperber <sperber@deinprogramm.de>
parents:
4375
diff
changeset
|
3616 * Round up when we're shrinking, down when we're growing |
|
c32b3d10c56b
Fix problem with `resize-minibuffer-mode'.
Mike Sperber <sperber@deinprogramm.de>
parents:
4375
diff
changeset
|
3617 * to make sure that pairs of grow / shrink meant to |
|
c32b3d10c56b
Fix problem with `resize-minibuffer-mode'.
Mike Sperber <sperber@deinprogramm.de>
parents:
4375
diff
changeset
|
3618 * cancel out actually do cancel out. |
|
c32b3d10c56b
Fix problem with `resize-minibuffer-mode'.
Mike Sperber <sperber@deinprogramm.de>
parents:
4375
diff
changeset
|
3619 */ |
|
c32b3d10c56b
Fix problem with `resize-minibuffer-mode'.
Mike Sperber <sperber@deinprogramm.de>
parents:
4375
diff
changeset
|
3620 if (pixel_adj_left < 0) |
|
c32b3d10c56b
Fix problem with `resize-minibuffer-mode'.
Mike Sperber <sperber@deinprogramm.de>
parents:
4375
diff
changeset
|
3621 pos = ((pos + line_size -1) / line_size) * line_size; |
|
c32b3d10c56b
Fix problem with `resize-minibuffer-mode'.
Mike Sperber <sperber@deinprogramm.de>
parents:
4375
diff
changeset
|
3622 else |
|
c32b3d10c56b
Fix problem with `resize-minibuffer-mode'.
Mike Sperber <sperber@deinprogramm.de>
parents:
4375
diff
changeset
|
3623 pos = (pos / line_size) * line_size; |
|
c32b3d10c56b
Fix problem with `resize-minibuffer-mode'.
Mike Sperber <sperber@deinprogramm.de>
parents:
4375
diff
changeset
|
3624 } |
| 428 | 3625 |
| 3626 /* Avoid confusion: don't delete child if it becomes too small */ | |
| 3627 set_window_pixsize (child, pos + first - last_pos, 1, set_height); | |
| 3628 | |
| 3629 last_pos = pos + first; | |
| 3630 last_old_pos = old_pos; | |
| 3631 } | |
| 3632 | |
| 3633 /* Sometimes we may get called with our old size. In that case | |
| 3634 we don't need to do anything else. */ | |
| 3635 if (!pixel_adj_left) | |
| 3636 return; | |
| 3637 | |
| 3638 /* Now delete any children that became too small. */ | |
| 3639 if (!nodelete) | |
| 3640 for (child = major_kid; !NILP (child); child = XWINDOW (child)->next) | |
| 3641 { | |
| 3642 if (set_height) | |
| 3643 set_window_pixheight (child, WINDOW_HEIGHT (XWINDOW (child)), 0); | |
| 3644 else | |
| 3645 set_window_pixwidth (child, WINDOW_WIDTH (XWINDOW (child)), 0); | |
| 3646 } | |
| 3647 } | |
| 3648 } | |
| 3649 | |
| 3650 /* Set the height of WINDOW and all its inferiors. */ | |
| 3651 void | |
| 3652 set_window_pixheight (Lisp_Object window, int new_pixheight, int nodelete) | |
| 3653 { | |
| 3654 set_window_pixsize (window, new_pixheight, nodelete, 1); | |
| 3655 } | |
| 3656 | |
| 3657 /* Recursively set width of WINDOW and its inferiors. */ | |
| 3658 void | |
| 3659 set_window_pixwidth (Lisp_Object window, int new_pixwidth, int nodelete) | |
| 3660 { | |
| 3661 set_window_pixsize (window, new_pixwidth, nodelete, 0); | |
| 3662 } | |
| 3663 | |
| 3664 | |
| 3665 static int window_select_count; | |
| 3666 | |
| 440 | 3667 DEFUN ("set-window-buffer", Fset_window_buffer, 2, 3, 0, /* |
| 428 | 3668 Make WINDOW display BUFFER as its contents. |
| 3669 BUFFER can be a buffer or buffer name. | |
| 440 | 3670 |
| 442 | 3671 With non-nil optional argument NORECORD, do not modify the |
| 440 | 3672 global or per-frame buffer ordering. |
| 428 | 3673 */ |
| 440 | 3674 (window, buffer, norecord)) |
| 428 | 3675 { |
| 3676 Lisp_Object tem; | |
| 3677 struct window *w = decode_window (window); | |
| 448 | 3678 int old_buffer_local_face_property = 0; |
| 428 | 3679 |
| 3680 buffer = Fget_buffer (buffer); | |
| 3681 CHECK_BUFFER (buffer); | |
| 3682 | |
| 3683 if (!BUFFER_LIVE_P (XBUFFER (buffer))) | |
| 563 | 3684 invalid_operation ("Attempt to display deleted buffer", Qunbound); |
| 428 | 3685 |
| 3686 tem = w->buffer; | |
| 3687 if (NILP (tem)) | |
| 563 | 3688 invalid_operation ("Window is deleted", Qunbound); |
| 428 | 3689 else if (EQ (tem, buffer)) |
| 3690 return Qnil; | |
| 3691 else if (! EQ (tem, Qt)) /* w->buffer is t when the window | |
| 3692 is first being set up. */ | |
| 3693 { | |
| 3694 if (!NILP (w->dedicated) && !EQ (tem, buffer)) | |
| 563 | 3695 signal_error (Qinvalid_operation, "Window is dedicated to buffer", tem); |
| 428 | 3696 |
| 448 | 3697 old_buffer_local_face_property = |
| 3698 XBUFFER (w->buffer)->buffer_local_face_property; | |
| 428 | 3699 unshow_buffer (w); |
| 3700 } | |
| 3701 | |
| 3702 w->buffer = buffer; | |
| 3703 w->window_end_pos[CURRENT_DISP] = 0; | |
| 3704 w->hscroll = 0; | |
| 3705 w->modeline_hscroll = 0; | |
| 844 | 3706 #if 0 /* pre point caches */ |
| 428 | 3707 Fset_marker (w->pointm[CURRENT_DISP], |
| 3708 make_int (BUF_PT (XBUFFER (buffer))), | |
| 3709 buffer); | |
| 3710 set_marker_restricted (w->start[CURRENT_DISP], | |
| 3711 make_int (XBUFFER (buffer)->last_window_start), | |
| 3712 buffer); | |
| 844 | 3713 #else |
| 3714 { | |
| 3715 Lisp_Object marker = Fgethash (buffer, w->saved_point_cache, Qnil); | |
| 3716 Lisp_Object newpoint = | |
| 3717 !NILP (marker) ? make_int (marker_position (marker)) : | |
| 3718 make_int (BUF_PT (XBUFFER (buffer))); | |
| 3719 /* Previously, we had in here set-window-point, which did one of the | |
| 3720 following two, but not both. However, that could result in pointm | |
| 3721 being in a different buffer from the window's buffer! Probably | |
| 3722 not a travesty since it always occurred when the window was | |
| 3723 selected, meaning its value of point was ignored in favor of the | |
| 3724 buffer's; but it tripped an assert() in unshow_buffer(). */ | |
| 3725 set_marker_restricted (w->pointm[CURRENT_DISP], newpoint, buffer); | |
| 3726 if (EQ (wrap_window (w), Fselected_window (Qnil))) | |
| 3727 Fgoto_char (newpoint, buffer); /* this will automatically clip to | |
| 3728 accessible */ | |
| 3729 marker = Fgethash (buffer, w->saved_last_window_start_cache, Qnil); | |
| 3730 set_marker_restricted (w->start[CURRENT_DISP], | |
| 3731 !NILP (marker) ? | |
| 3732 make_int (marker_position (marker)) : | |
| 3733 make_int (XBUFFER (buffer)->last_window_start), | |
| 3734 buffer); | |
| 3735 } | |
| 3736 #endif | |
| 3737 | |
| 428 | 3738 Fset_marker (w->sb_point, w->start[CURRENT_DISP], buffer); |
| 3739 /* set start_at_line_beg correctly. GE */ | |
| 844 | 3740 w->start_at_line_beg = |
| 3741 beginning_of_line_p (XBUFFER (buffer), | |
| 3742 marker_position (w->start[CURRENT_DISP])); | |
| 3743 w->force_start = 0; /* XEmacs fix */ | |
| 428 | 3744 SET_LAST_MODIFIED (w, 1); |
| 3745 SET_LAST_FACECHANGE (w); | |
| 3746 MARK_WINDOWS_CHANGED (w); | |
| 448 | 3747 { |
| 3748 int new_buffer_local_face_property = | |
| 3749 XBUFFER (w->buffer)->buffer_local_face_property; | |
| 3750 | |
| 3751 if (new_buffer_local_face_property | |
| 3752 || new_buffer_local_face_property != old_buffer_local_face_property) | |
| 3753 MARK_WINDOW_FACES_CHANGED (w); | |
| 3754 } | |
| 428 | 3755 recompute_all_cached_specifiers_in_window (w); |
| 3756 if (EQ (window, Fselected_window (Qnil))) | |
| 3757 { | |
| 440 | 3758 if (NILP (norecord)) |
| 3759 Frecord_buffer (buffer); | |
| 3760 | |
| 428 | 3761 Fset_buffer (buffer); |
| 3762 } | |
| 3763 return Qnil; | |
| 3764 } | |
| 3765 | |
| 3766 DEFUN ("select-window", Fselect_window, 1, 2, 0, /* | |
| 3767 Select WINDOW. Most editing will apply to WINDOW's buffer. | |
| 3768 The main editor command loop selects the buffer of the selected window | |
| 3769 before each command. | |
| 3770 | |
| 442 | 3771 With non-nil optional argument NORECORD, do not modify the |
| 428 | 3772 global or per-frame buffer ordering. |
| 3773 */ | |
| 3774 (window, norecord)) | |
| 3775 { | |
| 3776 struct window *w; | |
| 3777 Lisp_Object old_selected_window = Fselected_window (Qnil); | |
| 3778 | |
| 3779 CHECK_LIVE_WINDOW (window); | |
| 3780 w = XWINDOW (window); | |
| 3781 | |
| 3782 /* we have already caught dead-window errors */ | |
| 3783 if (!NILP (w->hchild) || !NILP (w->vchild)) | |
| 563 | 3784 invalid_operation ("Trying to select non-leaf window", Qunbound); |
| 428 | 3785 |
| 3786 w->use_time = make_int (++window_select_count); | |
| 442 | 3787 |
| 428 | 3788 if (EQ (window, old_selected_window)) |
| 3789 return window; | |
| 3790 | |
| 3791 /* deselect the old window, if it exists (it might not exist if | |
| 3792 the selected device has no frames, which occurs at startup) */ | |
| 3793 if (!NILP (old_selected_window)) | |
| 3794 { | |
| 3795 struct window *ow = XWINDOW (old_selected_window); | |
| 3796 | |
| 3797 Fset_marker (ow->pointm[CURRENT_DISP], | |
| 3798 make_int (BUF_PT (XBUFFER (ow->buffer))), | |
| 3799 ow->buffer); | |
| 3800 | |
| 3801 MARK_WINDOWS_CHANGED (ow); | |
| 3802 } | |
| 3803 | |
| 3804 /* now select the window's frame */ | |
| 3805 set_frame_selected_window (XFRAME (WINDOW_FRAME (w)), window); | |
| 3806 | |
| 3807 select_frame_1 (WINDOW_FRAME (w)); | |
| 3808 | |
| 3809 /* also select the window's buffer */ | |
| 3810 if (NILP (norecord)) | |
| 3811 Frecord_buffer (w->buffer); | |
| 3812 Fset_buffer (w->buffer); | |
| 3813 | |
| 3814 /* Go to the point recorded in the window. | |
| 3815 This is important when the buffer is in more | |
| 3816 than one window. It also matters when | |
| 3817 redisplay_window has altered point after scrolling, | |
| 3818 because it makes the change only in the window. */ | |
| 3819 { | |
| 665 | 3820 Charbpos new_point = marker_position (w->pointm[CURRENT_DISP]); |
| 428 | 3821 if (new_point < BUF_BEGV (current_buffer)) |
| 3822 new_point = BUF_BEGV (current_buffer); | |
| 3823 else if (new_point > BUF_ZV (current_buffer)) | |
| 3824 new_point = BUF_ZV (current_buffer); | |
| 3825 | |
| 3826 BUF_SET_PT (current_buffer, new_point); | |
| 3827 } | |
| 3828 | |
| 3829 MARK_WINDOWS_CHANGED (w); | |
| 3830 | |
| 3831 return window; | |
| 3832 } | |
| 3833 | |
| 3834 Lisp_Object | |
| 3835 display_buffer (Lisp_Object buffer, Lisp_Object not_this_window_p, | |
| 3836 Lisp_Object override_frame) | |
| 3837 { | |
| 3838 return call3 (Qdisplay_buffer, buffer, not_this_window_p, override_frame); | |
| 3839 } | |
| 3840 | |
| 3841 void | |
| 3842 temp_output_buffer_show (Lisp_Object buf, Lisp_Object same_frame) | |
| 3843 { | |
| 3844 /* This function can GC */ | |
| 3845 Lisp_Object window; | |
| 3846 struct window *w; | |
| 3847 struct buffer *b = XBUFFER (buf); | |
| 3848 | |
| 3849 BUF_SAVE_MODIFF (XBUFFER (buf)) = BUF_MODIFF (b); | |
| 3850 widen_buffer (b, 0); | |
| 3851 BUF_SET_PT (b, BUF_BEG (b)); | |
| 3852 | |
| 3853 if (!NILP (Vtemp_buffer_show_function)) | |
| 3854 call1 (Vtemp_buffer_show_function, buf); | |
| 3855 else | |
| 3856 { | |
| 3857 window = display_buffer (buf, Qnil, same_frame); | |
| 3858 | |
| 3859 if (!EQ (XWINDOW (window)->frame, Fselected_frame (Qnil))) | |
| 3860 Fmake_frame_visible (WINDOW_FRAME (XWINDOW (window))); | |
| 3861 | |
| 3862 Vminibuffer_scroll_window = window; | |
| 3863 w = XWINDOW (window); | |
| 3864 w->hscroll = 0; | |
| 3865 w->modeline_hscroll = 0; | |
| 3866 set_marker_restricted (w->start[CURRENT_DISP], make_int (1), buf); | |
| 3867 set_marker_restricted (w->pointm[CURRENT_DISP], make_int (1), buf); | |
| 3868 set_marker_restricted (w->sb_point, make_int (1), buf); | |
| 3869 } | |
| 3870 } | |
| 3871 | |
| 3872 static void | |
| 3873 make_dummy_parent (Lisp_Object window) | |
| 3874 { | |
| 3025 | 3875 Lisp_Object new_; |
| 428 | 3876 struct window *o = XWINDOW (window); |
| 3017 | 3877 struct window *p = ALLOC_LCRECORD_TYPE (struct window, &lrecord_window); |
| 428 | 3878 |
| 3025 | 3879 new_ = wrap_window (p); |
| 3017 | 3880 COPY_LCRECORD (p, o); |
| 428 | 3881 |
| 3882 /* Don't copy the pointers to the line start cache or the face | |
| 3883 instances. */ | |
| 3884 p->line_start_cache = Dynarr_new (line_start_cache); | |
| 3092 | 3885 #ifdef NEW_GC |
| 3886 p->face_cachels = Dynarr_lisp_new (face_cachel, | |
| 3887 &lrecord_face_cachel_dynarr, | |
| 3888 &lrecord_face_cachel); | |
| 3889 p->glyph_cachels = Dynarr_lisp_new (glyph_cachel, | |
| 3890 &lrecord_glyph_cachel_dynarr, | |
| 3891 &lrecord_glyph_cachel); | |
| 3892 #else /* not NEW_GC */ | |
| 428 | 3893 p->face_cachels = Dynarr_new (face_cachel); |
| 3894 p->glyph_cachels = Dynarr_new (glyph_cachel); | |
| 3092 | 3895 #endif /* not NEW_GC */ |
| 442 | 3896 p->subwindow_instance_cache = |
| 450 | 3897 make_image_instance_cache_hash_table (); |
| 428 | 3898 |
| 3899 /* Put new into window structure in place of window */ | |
| 3025 | 3900 replace_window (window, new_); |
| 428 | 3901 |
| 3902 o->next = Qnil; | |
| 3903 o->prev = Qnil; | |
| 3904 o->vchild = Qnil; | |
| 3905 o->hchild = Qnil; | |
| 3025 | 3906 o->parent = new_; |
| 428 | 3907 |
| 3908 p->start[CURRENT_DISP] = Qnil; | |
| 3909 p->start[DESIRED_DISP] = Qnil; | |
| 3910 p->start[CMOTION_DISP] = Qnil; | |
| 3911 p->pointm[CURRENT_DISP] = Qnil; | |
| 3912 p->pointm[DESIRED_DISP] = Qnil; | |
| 3913 p->pointm[CMOTION_DISP] = Qnil; | |
| 3914 p->sb_point = Qnil; | |
| 844 | 3915 p->saved_point_cache = make_saved_buffer_point_cache (); |
| 3916 p->saved_last_window_start_cache = make_saved_buffer_point_cache (); | |
| 428 | 3917 p->buffer = Qnil; |
| 3918 } | |
| 3919 | |
| 3920 DEFUN ("split-window", Fsplit_window, 0, 3, "", /* | |
| 3921 Split WINDOW, putting SIZE lines in the first of the pair. | |
| 444 | 3922 WINDOW defaults to the selected one and SIZE to half its size. |
| 707 | 3923 If optional third arg HORFLAG is non-nil, split side by side and put |
| 3924 SIZE columns in the first of the pair. The newly created window is | |
| 3925 returned. | |
| 428 | 3926 */ |
| 444 | 3927 (window, size, horflag)) |
| 428 | 3928 { |
| 3025 | 3929 Lisp_Object new_; |
| 428 | 3930 struct window *o, *p; |
| 3931 struct frame *f; | |
| 444 | 3932 int csize; |
| 428 | 3933 int psize; |
| 3934 | |
| 3935 if (NILP (window)) | |
| 3936 window = Fselected_window (Qnil); | |
| 3937 else | |
| 3938 CHECK_LIVE_WINDOW (window); | |
| 3939 | |
| 3940 o = XWINDOW (window); | |
| 3941 f = XFRAME (WINDOW_FRAME (o)); | |
| 3942 | |
| 444 | 3943 if (NILP (size)) |
| 428 | 3944 { |
| 3945 if (!NILP (horflag)) | |
| 3946 /* In the new scheme, we are symmetric with respect to separators | |
| 3947 so there is no need to do weird things here. */ | |
| 3948 { | |
| 956 | 3949 psize = (WINDOW_WIDTH (o) + window_divider_width (o)) >> 1; |
| 444 | 3950 csize = window_pixel_width_to_char_width (o, psize, 0); |
| 428 | 3951 } |
| 3952 else | |
| 3953 { | |
| 3954 psize = WINDOW_HEIGHT (o) >> 1; | |
| 444 | 3955 csize = window_pixel_height_to_char_height (o, psize, 1); |
| 428 | 3956 } |
| 3957 } | |
| 3958 else | |
| 3959 { | |
| 444 | 3960 CHECK_INT (size); |
| 3961 csize = XINT (size); | |
| 428 | 3962 if (!NILP (horflag)) |
| 444 | 3963 psize = window_char_width_to_pixel_width (o, csize, 0); |
| 428 | 3964 else |
| 444 | 3965 psize = window_char_height_to_pixel_height (o, csize, 1); |
| 428 | 3966 } |
| 3967 | |
| 3968 if (MINI_WINDOW_P (o)) | |
| 563 | 3969 invalid_operation ("Attempt to split minibuffer window", Qunbound); |
| 428 | 3970 else if (FRAME_NO_SPLIT_P (XFRAME (WINDOW_FRAME (o)))) |
| 563 | 3971 invalid_operation ("Attempt to split unsplittable frame", Qunbound); |
| 428 | 3972 |
| 3973 check_min_window_sizes (); | |
| 3974 | |
| 3975 if (NILP (horflag)) | |
| 3976 { | |
| 444 | 3977 if (csize < window_min_height) |
| 563 | 3978 signal_error (Qinvalid_operation, "Window height too small (after splitting)", make_int (csize)); |
| 444 | 3979 if (csize + window_min_height > window_char_height (o, 1)) |
| 563 | 3980 signal_error (Qinvalid_operation, "Window height too small (after splitting)", |
| 3981 make_int (window_char_height (o, 1) - csize)); | |
| 428 | 3982 if (NILP (o->parent) |
| 3983 || NILP (XWINDOW (o->parent)->vchild)) | |
| 3984 { | |
| 3985 make_dummy_parent (window); | |
| 448 | 3986 #if 0 |
| 3987 /* #### I can't understand why you have to reset face | |
| 3988 cachels here. This can cause crash so let's disable it | |
| 3989 and see the difference. See redisplay-tests.el --yh */ | |
| 428 | 3990 reset_face_cachels (XWINDOW (window)); |
| 448 | 3991 #endif |
| 3025 | 3992 new_ = o->parent; |
| 3993 XWINDOW (new_)->vchild = window; | |
| 428 | 3994 XFRAME (o->frame)->mirror_dirty = 1; |
| 3995 } | |
| 3996 } | |
| 3997 else | |
| 3998 { | |
| 444 | 3999 if (csize < window_min_width) |
| 563 | 4000 signal_error (Qinvalid_operation, "Window width too small (after splitting)", make_int (csize)); |
| 444 | 4001 if (csize + window_min_width > window_char_width (o, 0)) |
| 563 | 4002 signal_error (Qinvalid_operation, "Window width too small (after splitting)", |
| 4003 make_int (window_char_width (o, 0) - csize)); | |
| 428 | 4004 if (NILP (o->parent) |
| 4005 || NILP (XWINDOW (o->parent)->hchild)) | |
| 4006 { | |
| 4007 make_dummy_parent (window); | |
| 448 | 4008 #if 0 |
| 4009 /* #### See above. */ | |
| 428 | 4010 reset_face_cachels (XWINDOW (window)); |
| 448 | 4011 #endif |
| 3025 | 4012 new_ = o->parent; |
| 4013 XWINDOW (new_)->hchild = window; | |
| 428 | 4014 XFRAME (o->frame)->mirror_dirty = 1; |
| 4015 } | |
| 4016 } | |
| 4017 | |
| 4018 /* Now we know that window's parent is a vertical combination | |
| 4019 if we are dividing vertically, or a horizontal combination | |
| 4020 if we are making side-by-side windows */ | |
| 4021 | |
| 4022 MARK_FRAME_WINDOWS_STRUCTURE_CHANGED (f); | |
| 3025 | 4023 new_ = allocate_window (); |
| 4024 p = XWINDOW (new_); | |
| 428 | 4025 |
| 4026 p->frame = o->frame; | |
| 4027 p->next = o->next; | |
| 4028 if (!NILP (p->next)) | |
| 3025 | 4029 XWINDOW (p->next)->prev = new_; |
| 428 | 4030 p->prev = window; |
| 3025 | 4031 o->next = new_; |
| 428 | 4032 p->parent = o->parent; |
| 4033 p->buffer = Qt; | |
| 4034 | |
| 4035 reset_face_cachels (p); | |
| 4036 reset_glyph_cachels (p); | |
| 4037 | |
| 4038 | |
| 4039 /* Apportion the available frame space among the two new windows */ | |
| 4040 | |
| 4041 if (!NILP (horflag)) | |
| 4042 { | |
| 4043 WINDOW_HEIGHT (p) = WINDOW_HEIGHT (o); | |
| 4044 WINDOW_TOP (p) = WINDOW_TOP (o); | |
| 4045 WINDOW_WIDTH (p) = WINDOW_WIDTH (o) - psize; | |
| 4046 WINDOW_WIDTH (o) = psize; | |
| 4047 WINDOW_LEFT (p) = WINDOW_LEFT (o) + psize; | |
| 4048 } | |
| 4049 else | |
| 4050 { | |
| 4051 WINDOW_LEFT (p) = WINDOW_LEFT (o); | |
| 4052 WINDOW_WIDTH (p) = WINDOW_WIDTH (o); | |
| 4053 WINDOW_HEIGHT (p) = WINDOW_HEIGHT (o) - psize; | |
| 4054 WINDOW_HEIGHT (o) = psize; | |
| 4055 WINDOW_TOP (p) = WINDOW_TOP (o) + psize; | |
| 4056 } | |
| 4057 | |
| 4058 XFRAME (p->frame)->mirror_dirty = 1; | |
| 853 | 4059 |
| 3025 | 4060 note_object_created (new_); |
| 853 | 4061 |
| 428 | 4062 /* do this last (after the window is completely initialized and |
| 4063 the mirror-dirty flag is set) so that specifier recomputation | |
| 4064 caused as a result of this will work properly and not abort. */ | |
| 3025 | 4065 Fset_window_buffer (new_, o->buffer, Qt); |
| 4066 return new_; | |
| 428 | 4067 } |
| 4068 | |
| 4069 | |
| 4070 DEFUN ("enlarge-window", Fenlarge_window, 1, 3, "_p", /* | |
| 444 | 4071 Make the selected window COUNT lines taller. |
| 4072 From program, optional second arg HORIZONTALP non-nil means grow | |
| 4073 sideways COUNT columns, and optional third arg WINDOW specifies the | |
| 4074 window to change instead of the selected window. | |
| 428 | 4075 */ |
| 444 | 4076 (count, horizontalp, window)) |
| 4077 { | |
| 4078 CHECK_INT (count); | |
| 4079 change_window_height (window, XINT (count), horizontalp, /* inpixels */ 0); | |
| 428 | 4080 return Qnil; |
| 4081 } | |
| 4082 | |
| 4083 DEFUN ("enlarge-window-pixels", Fenlarge_window_pixels, 1, 3, "_p", /* | |
| 444 | 4084 Make the selected window COUNT pixels taller. |
| 4085 From program, optional second arg HORIZONTALP non-nil means grow | |
| 4086 sideways COUNT pixels, and optional third arg WINDOW specifies the | |
| 4087 window to change instead of the selected window. | |
| 428 | 4088 */ |
| 444 | 4089 (count, horizontalp, window)) |
| 4090 { | |
| 4091 CHECK_INT (count); | |
| 4092 change_window_height (window, XINT (count), horizontalp, /* inpixels */ 1); | |
| 428 | 4093 return Qnil; |
| 4094 } | |
| 4095 | |
| 4096 DEFUN ("shrink-window", Fshrink_window, 1, 3, "_p", /* | |
| 444 | 4097 Make the selected window COUNT lines shorter. |
| 4098 From program, optional second arg HORIZONTALP non-nil means shrink | |
| 4099 sideways COUNT columns, and optional third arg WINDOW specifies the | |
| 4100 window to change instead of the selected window. | |
| 428 | 4101 */ |
| 444 | 4102 (count, horizontalp, window)) |
| 4103 { | |
| 4104 CHECK_INT (count); | |
| 4105 change_window_height (window, -XINT (count), horizontalp, /* inpixels */ 0); | |
| 428 | 4106 return Qnil; |
| 4107 } | |
| 4108 | |
| 4109 DEFUN ("shrink-window-pixels", Fshrink_window_pixels, 1, 3, "_p", /* | |
| 444 | 4110 Make the selected window COUNT pixels smaller. |
| 4111 From program, optional second arg HORIZONTALP non-nil means shrink | |
| 4112 sideways COUNT pixels, and optional third arg WINDOW specifies the | |
| 4113 window to change instead of the selected window. | |
| 428 | 4114 */ |
| 444 | 4115 (count, horizontalp, window)) |
| 4116 { | |
| 4117 CHECK_INT (count); | |
| 4118 change_window_height (window, -XINT (count), horizontalp, /* inpixels */ 1); | |
| 428 | 4119 return Qnil; |
| 4120 } | |
| 4121 | |
| 4122 static int | |
| 4123 window_pixel_height_to_char_height (struct window *w, int pixel_height, | |
| 4124 int include_gutters_p) | |
| 4125 { | |
| 4126 int avail_height; | |
| 4127 int defheight, defwidth; | |
| 3687 | 4128 int char_height = 0; |
| 793 | 4129 Lisp_Object window = wrap_window (w); |
| 4130 | |
| 428 | 4131 |
| 4132 avail_height = (pixel_height - | |
| 4133 (include_gutters_p ? 0 : | |
| 442 | 4134 window_top_window_gutter_height (w) + |
| 4135 window_bottom_window_gutter_height (w))); | |
| 428 | 4136 |
|
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5043
diff
changeset
|
4137 default_face_width_and_height (window, &defwidth, &defheight); |
| 428 | 4138 |
| 3687 | 4139 if (defheight) |
| 4140 char_height = avail_height / defheight; | |
| 428 | 4141 |
| 4142 /* It's the calling function's responsibility to check these values | |
| 4143 and make sure they're not out of range. | |
| 4144 | |
| 4145 #### We need to go through the calling functions and actually | |
| 4146 do this. */ | |
| 4147 return max (0, char_height); | |
| 4148 } | |
| 4149 | |
| 4150 static int | |
| 4151 window_char_height_to_pixel_height (struct window *w, int char_height, | |
| 4152 int include_gutters_p) | |
| 4153 { | |
| 4154 int avail_height; | |
| 4155 int defheight, defwidth; | |
| 4156 int pixel_height; | |
| 4157 | |
| 793 | 4158 Lisp_Object window = wrap_window (w); |
| 4159 | |
| 428 | 4160 |
|
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Ben Wing <ben@xemacs.org>
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5043
diff
changeset
|
4161 default_face_width_and_height (window, &defwidth, &defheight); |
| 428 | 4162 |
| 4163 avail_height = char_height * defheight; | |
| 4164 pixel_height = (avail_height + | |
| 4165 (include_gutters_p ? 0 : | |
| 442 | 4166 window_top_window_gutter_height (w) + |
| 4167 window_bottom_window_gutter_height (w))); | |
| 428 | 4168 |
| 4169 /* It's the calling function's responsibility to check these values | |
| 4170 and make sure they're not out of range. | |
| 4171 | |
| 4172 #### We need to go through the calling functions and actually | |
| 4173 do this. */ | |
| 4174 return max (0, pixel_height); | |
| 4175 } | |
| 4176 | |
| 4177 /* Return number of default lines of text can fit in the window W. | |
| 4178 If INCLUDE_GUTTERS_P is 1, include "gutter" space (modeline plus | |
| 4179 horizontal scrollbar) in the space that is used for the calculation. | |
| 442 | 4180 This doesn't include space used by the frame gutters. |
| 428 | 4181 */ |
| 4182 int | |
| 4183 window_char_height (struct window *w, int include_gutters_p) | |
| 4184 { | |
| 442 | 4185 return window_pixel_height_to_char_height (w, window_pixel_height (w), |
| 428 | 4186 include_gutters_p); |
| 4187 } | |
| 4188 | |
| 4189 /* | |
| 4190 * Return number of lines currently displayed in window w. If | |
| 4191 * end-of-buffer is displayed then the area below end-of-buffer is assume | |
| 4192 * to be blank lines of default height. | |
| 4193 * Does not include the modeline. | |
| 4194 */ | |
| 4195 int | |
| 4196 window_displayed_height (struct window *w) | |
| 4197 { | |
| 4198 struct buffer *b = XBUFFER (w->buffer); | |
| 4199 display_line_dynarr *dla = window_display_lines (w, CURRENT_DISP); | |
| 4200 int num_lines; | |
| 4201 Charcount end_pos = (BUF_Z (b) - w->window_end_pos[CURRENT_DISP] > BUF_ZV (b) | |
| 4202 ? -1 | |
| 4203 : w->window_end_pos[CURRENT_DISP]); | |
| 4204 | |
| 4205 if (!Dynarr_length (dla)) | |
| 4206 return window_char_height (w, 0); | |
| 4207 | |
| 4208 num_lines = Dynarr_length (dla); | |
| 4209 | |
| 4210 /* #### Document and assert somewhere that w->window_end_pos == -1 | |
| 4211 indicates that end-of-buffer is being displayed. */ | |
| 4212 if (end_pos == -1) | |
| 4213 { | |
| 4967 | 4214 struct display_line *dl = Dynarr_begin (dla); |
| 428 | 4215 int ypos1 = dl->ypos + dl->descent; |
| 4216 int ypos2 = WINDOW_TEXT_BOTTOM (w); | |
| 4217 Lisp_Object window; | |
| 4218 int defheight, defwidth; | |
| 4219 | |
| 793 | 4220 window = wrap_window (w); |
| 428 | 4221 |
| 4222 if (dl->modeline) | |
| 4223 { | |
| 4224 num_lines--; | |
| 4225 | |
| 4226 if (Dynarr_length (dla) == 1) | |
| 4227 ypos1 = WINDOW_TEXT_TOP (w); | |
| 4228 else | |
| 4229 { | |
| 4230 dl = Dynarr_atp (dla, Dynarr_length (dla) - 1); | |
| 4231 /* If this line is clipped then we know that there is no | |
| 4232 blank room between eob and the modeline. If we are | |
| 4233 scrolling on clipped lines just know off the clipped | |
| 4234 line and return .*/ | |
| 4235 if (scroll_on_clipped_lines && dl->clip) | |
| 4236 return num_lines - 1; | |
| 4237 ypos1 = dl->ypos + dl->descent - dl->clip; | |
| 4238 } | |
| 4239 } | |
| 4240 | |
|
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put width before height consistently, fix a real bug found in the process
Ben Wing <ben@xemacs.org>
parents:
5043
diff
changeset
|
4241 default_face_width_and_height (window, &defwidth, &defheight); |
| 428 | 4242 /* #### This probably needs to know about the clipping area once a |
| 4243 final definition is decided on. */ | |
| 3707 | 4244 if (defheight) |
| 4245 num_lines += ((ypos2 - ypos1) / defheight); | |
| 428 | 4246 } |
| 4247 else | |
| 4248 { | |
| 4967 | 4249 if (num_lines > 1 && Dynarr_begin (dla)->modeline) |
| 428 | 4250 num_lines--; |
| 4251 | |
| 4252 if (scroll_on_clipped_lines | |
| 4253 && Dynarr_atp (dla, Dynarr_length (dla) - 1)->clip) | |
| 4254 num_lines--; | |
| 4255 } | |
| 4256 | |
| 4257 return num_lines; | |
| 4258 } | |
| 4259 | |
| 4260 static int | |
| 4261 window_pixel_width (Lisp_Object window) | |
| 4262 { | |
| 4263 return WINDOW_WIDTH (XWINDOW (window)); | |
| 4264 } | |
| 4265 | |
| 442 | 4266 /* Calculate the pixel of a window, optionally including margin space |
| 4267 but no vertical gutters. */ | |
| 428 | 4268 static int |
| 4269 window_pixel_width_to_char_width (struct window *w, int pixel_width, | |
| 4270 int include_margins_p) | |
| 4271 { | |
| 4272 int avail_width; | |
| 3676 | 4273 int char_width = 0; |
| 428 | 4274 int defheight, defwidth; |
| 793 | 4275 Lisp_Object window = wrap_window (w); |
| 4276 | |
| 428 | 4277 |
| 4278 avail_width = (pixel_width - | |
| 4279 window_left_gutter_width (w, 0) - | |
| 4280 window_right_gutter_width (w, 0) - | |
| 4281 (include_margins_p ? 0 : window_left_margin_width (w)) - | |
| 4282 (include_margins_p ? 0 : window_right_margin_width (w))); | |
| 4283 | |
|
5047
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put width before height consistently, fix a real bug found in the process
Ben Wing <ben@xemacs.org>
parents:
5043
diff
changeset
|
4284 default_face_width_and_height (window, &defwidth, &defheight); |
| 428 | 4285 |
| 3676 | 4286 if (defwidth) |
| 4287 char_width = (avail_width / defwidth); | |
| 428 | 4288 |
| 4289 /* It's the calling function's responsibility to check these values | |
| 4290 and make sure they're not out of range. | |
| 4291 | |
| 4292 #### We need to go through the calling functions and actually | |
| 4293 do this. */ | |
| 4294 return max (0, char_width); | |
| 4295 } | |
| 4296 | |
| 4297 static int | |
| 4298 window_char_width_to_pixel_width (struct window *w, int char_width, | |
| 4299 int include_margins_p) | |
| 4300 { | |
| 4301 int avail_width; | |
| 4302 int pixel_width; | |
| 4303 int defheight, defwidth; | |
| 793 | 4304 Lisp_Object window = wrap_window (w); |
| 4305 | |
| 428 | 4306 |
|
5047
07dcc7000bbf
put width before height consistently, fix a real bug found in the process
Ben Wing <ben@xemacs.org>
parents:
5043
diff
changeset
|
4307 default_face_width_and_height (window, &defwidth, &defheight); |
| 428 | 4308 |
| 4309 avail_width = char_width * defwidth; | |
| 4310 pixel_width = (avail_width + | |
| 442 | 4311 window_left_window_gutter_width (w, 0) + |
| 4312 window_right_window_gutter_width (w, 0) + | |
| 428 | 4313 (include_margins_p ? 0 : window_left_margin_width (w)) + |
| 4314 (include_margins_p ? 0 : window_right_margin_width (w))); | |
| 4315 | |
| 4316 /* It's the calling function's responsibility to check these values | |
| 4317 and make sure they're not out of range. | |
| 4318 | |
| 4319 #### We need to go through the calling functions and actually | |
| 4320 do this. */ | |
| 4321 return max (0, pixel_width); | |
| 4322 } | |
| 4323 | |
| 4324 /* This returns the usable space which doesn't include space needed by | |
| 4325 scrollbars or divider lines. */ | |
| 4326 int | |
| 4327 window_char_width (struct window *w, int include_margins_p) | |
| 4328 { | |
| 4329 return window_pixel_width_to_char_width (w, WINDOW_WIDTH (w), | |
| 4330 include_margins_p); | |
| 4331 } | |
| 4332 | |
| 4333 #define MINSIZE(w) \ | |
| 4334 (widthflag \ | |
| 4335 ? window_min_width * defwidth \ | |
| 4336 : (defheight * (MINI_WINDOW_P (XWINDOW (w)) ? 1 : window_min_height))) | |
| 4337 | |
| 4338 #define CURBEG(w) \ | |
| 4339 *(widthflag ? (int *) &WINDOW_LEFT (w) : (int *) &WINDOW_TOP (w)) | |
| 4340 | |
| 4341 #define CURSIZE(w) \ | |
| 4342 *(widthflag ? (int *) &WINDOW_WIDTH (w) : (int *) &WINDOW_HEIGHT (w)) | |
| 4343 | |
| 4344 #define CURCHARSIZE(w) \ | |
| 4345 (widthflag ? window_char_width (w, 0) : window_char_height (w, 1)) | |
| 4346 | |
| 4347 #define MINCHARSIZE(window) \ | |
| 4348 (widthflag ? window_min_width : MINI_WINDOW_P (XWINDOW (window)) \ | |
| 4349 ? 1 : window_min_height) | |
| 4350 | |
| 442 | 4351 static int |
| 4352 window_pixheight (Lisp_Object w) | |
| 4353 { | |
| 4354 return window_pixel_height (XWINDOW (w)); | |
| 4355 } | |
| 4356 | |
| 428 | 4357 /* Unlike set_window_pixheight, this function |
| 4358 also changes the heights of the siblings so as to | |
| 4359 keep everything consistent. */ | |
| 4360 | |
| 4361 static void | |
| 444 | 4362 change_window_height (Lisp_Object window, int delta, Lisp_Object horizontalp, |
| 428 | 4363 int inpixels) |
| 4364 { | |
| 444 | 4365 struct window *win = decode_window (window); |
| 4366 int widthflag = !NILP (horizontalp); | |
| 428 | 4367 Lisp_Object parent; |
| 4368 struct window *w; | |
| 4369 struct frame *f; | |
| 4370 int *sizep; | |
| 4371 int (*sizefun) (Lisp_Object) = (widthflag | |
| 4372 ? window_pixel_width | |
| 442 | 4373 : window_pixheight); |
| 428 | 4374 void (*setsizefun) (Lisp_Object, int, int) = (widthflag |
| 4375 ? set_window_pixwidth | |
| 4376 : set_window_pixheight); | |
| 4377 int dim; | |
| 4378 int defheight, defwidth; | |
| 4379 | |
| 4380 if (delta == 0) | |
| 4381 return; | |
| 4382 | |
| 4383 check_min_window_sizes (); | |
| 4384 | |
| 793 | 4385 window = wrap_window (win); |
| 428 | 4386 f = XFRAME (win->frame); |
| 4387 if (EQ (window, FRAME_ROOT_WINDOW (f))) | |
| 563 | 4388 invalid_operation ("Won't change only window", Qunbound); |
| 428 | 4389 |
|
5047
07dcc7000bbf
put width before height consistently, fix a real bug found in the process
Ben Wing <ben@xemacs.org>
parents:
5043
diff
changeset
|
4390 default_face_width_and_height (window, &defwidth, &defheight); |
| 428 | 4391 |
| 4392 while (1) | |
| 4393 { | |
| 4394 w = XWINDOW (window); | |
| 4395 parent = w->parent; | |
| 4396 if (NILP (parent)) | |
| 4397 { | |
| 4398 if (widthflag) | |
| 3078 | 4399 { |
| 4400 int new_pixsize; | |
| 4401 sizep = &CURSIZE (w); | |
| 3466 | 4402 dim = CURCHARSIZE (w); |
| 3078 | 4403 new_pixsize = inpixels?(*sizep + delta):(dim+delta); |
| 4404 set_window_pixsize (window, new_pixsize, 0, 0); | |
| 4405 return; | |
| 4406 } | |
| 428 | 4407 break; |
| 4408 } | |
| 4409 if (widthflag | |
| 4410 ? !NILP (XWINDOW (parent)->hchild) | |
| 4411 : !NILP (XWINDOW (parent)->vchild)) | |
| 4412 break; | |
| 4413 window = parent; | |
| 4414 } | |
| 4415 | |
| 4416 sizep = &CURSIZE (w); | |
| 4417 dim = CURCHARSIZE (w); | |
| 4418 | |
| 4419 if ((inpixels && (*sizep + delta) < MINSIZE (window)) || | |
| 4420 (!inpixels && (dim + delta) < MINCHARSIZE (window))) | |
| 4421 { | |
| 4422 if (MINI_WINDOW_P (XWINDOW (window))) | |
| 4423 return; | |
| 4424 else if (!NILP (parent)) | |
| 4425 { | |
| 4426 Fdelete_window (window, Qnil); | |
| 4427 return; | |
| 4428 } | |
| 4429 } | |
| 4430 | |
| 4431 if (!inpixels) | |
| 4432 delta *= (widthflag ? defwidth : defheight); | |
| 4433 | |
| 4434 { | |
| 4435 int maxdelta; | |
| 4436 | |
| 4437 maxdelta = ((!NILP (parent)) | |
| 4438 ? (*sizefun) (parent) - *sizep | |
| 4439 : ((!NILP (w->next)) | |
| 4440 ? (*sizefun) (w->next) - MINSIZE (w->next) | |
| 4441 : ((!NILP (w->prev)) | |
| 4442 ? (*sizefun) (w->prev) - MINSIZE (w->prev) | |
| 4443 /* This is a frame with only one window, | |
| 4444 a minibuffer-only or a minibufferless frame. */ | |
| 4445 : (delta = 0)))); | |
| 4446 | |
| 4447 if (delta > maxdelta) | |
| 4448 /* This case traps trying to make the minibuffer | |
| 4449 the full frame, or make the only window aside from the | |
| 4450 minibuffer the full frame. */ | |
| 4451 delta = maxdelta; | |
| 4452 | |
| 4453 if (delta == 0) | |
| 4454 return; | |
| 4455 | |
| 4456 #if 0 /* FSFmacs */ | |
| 4457 /* #### Chuck: is this correct? */ | |
| 4458 if (*sizep + delta < MINSIZE (window)) | |
| 4459 { | |
| 4460 Fdelete_window (window); | |
| 4461 return; | |
| 4462 } | |
| 4463 #endif | |
| 4464 } | |
| 4465 | |
| 4466 if (!NILP (w->next) && | |
| 4467 (*sizefun) (w->next) - delta >= (int) MINSIZE (w->next)) | |
| 4468 { | |
| 4469 CURBEG (XWINDOW (w->next)) += delta; | |
| 4470 (*setsizefun) (w->next, (*sizefun) (w->next) - delta, 0); | |
| 4471 (*setsizefun) (window, *sizep + delta, 0); | |
| 4472 } | |
| 4473 else if (!NILP (w->prev) && | |
| 4474 (*sizefun) (w->prev) - delta >= (int) MINSIZE (w->prev)) | |
| 4475 { | |
| 4476 (*setsizefun) (w->prev, (*sizefun) (w->prev) - delta, 0); | |
| 4477 CURBEG (w) -= delta; | |
| 4478 (*setsizefun) (window, *sizep + delta, 0); | |
| 4479 } | |
| 4480 else | |
| 4481 { | |
| 4482 int delta1; | |
| 4483 int opht = (*sizefun) (parent); | |
| 4484 | |
| 4485 /* If trying to grow this window to or beyond size of the parent, | |
| 4486 make delta1 so big that, on shrinking back down, | |
| 4487 all the siblings end up with less than one line and are deleted. */ | |
| 4488 if (opht <= *sizep + delta) | |
| 4489 delta1 = opht * opht * 2; | |
| 4490 /* Otherwise, make delta1 just right so that if we add delta1 | |
| 4491 lines to this window and to the parent, and then shrink | |
| 4492 the parent back to its original size, the new proportional | |
| 4493 size of this window will increase by delta. */ | |
| 4494 else | |
| 4495 delta1 = (delta * opht * 100) / ((opht - *sizep - delta) * 100); | |
| 4496 | |
| 4497 /* Add delta1 lines or columns to this window, and to the parent, | |
| 4498 keeping things consistent while not affecting siblings. */ | |
| 4499 CURSIZE (XWINDOW (parent)) = opht + delta1; | |
| 4500 (*setsizefun) (window, *sizep + delta1, 0); | |
| 4501 | |
| 4502 /* Squeeze out delta1 lines or columns from our parent, | |
| 4503 shrinking this window and siblings proportionately. | |
| 4504 This brings parent back to correct size. | |
| 4505 Delta1 was calculated so this makes this window the desired size, | |
| 4506 taking it all out of the siblings. */ | |
| 4507 (*setsizefun) (parent, opht, 0); | |
| 4508 } | |
| 4509 | |
| 4510 SET_LAST_MODIFIED (w, 0); | |
| 4511 SET_LAST_FACECHANGE (w); | |
| 4512 MARK_FRAME_WINDOWS_STRUCTURE_CHANGED (f); | |
| 4513 /* overkill maybe, but better to be correct */ | |
| 4514 MARK_FRAME_GUTTERS_CHANGED (f); | |
| 4515 } | |
| 4516 #undef MINSIZE | |
| 4517 #undef CURBEG | |
| 4518 #undef CURSIZE | |
| 4519 #undef CURCHARSIZE | |
| 4520 #undef MINCHARSIZE | |
| 4521 | |
| 4522 | |
| 4523 | |
| 444 | 4524 /* Scroll contents of window WINDOW up COUNT lines. |
| 4525 If COUNT < (top line height / average line height) then we just adjust | |
| 4526 the top clip. */ | |
| 428 | 4527 void |
| 444 | 4528 window_scroll (Lisp_Object window, Lisp_Object count, int direction, |
| 578 | 4529 Error_Behavior errb) |
| 428 | 4530 { |
| 4531 struct window *w = XWINDOW (window); | |
| 4532 struct buffer *b = XBUFFER (w->buffer); | |
| 4533 int selected = EQ (window, Fselected_window (Qnil)); | |
| 4534 int value = 0; | |
| 4535 Lisp_Object point, tem; | |
| 4536 display_line_dynarr *dla; | |
| 4537 int fheight, fwidth, modeline = 0; | |
| 4538 struct display_line* dl; | |
| 4539 | |
| 4540 if (selected) | |
| 4541 point = make_int (BUF_PT (b)); | |
| 4542 else | |
| 4543 { | |
| 665 | 4544 Charbpos pos = marker_position (w->pointm[CURRENT_DISP]); |
| 428 | 4545 |
| 4546 if (pos < BUF_BEGV (b)) | |
| 4547 pos = BUF_BEGV (b); | |
| 4548 else if (pos > BUF_ZV (b)) | |
| 4549 pos = BUF_ZV (b); | |
| 4550 | |
| 4551 point = make_int (pos); | |
| 4552 } | |
| 4553 | |
| 4554 /* Always set force_start so that redisplay_window will run | |
| 4555 the window-scroll-functions. */ | |
| 4556 w->force_start = 1; | |
| 4557 | |
| 4558 /* #### When the fuck does this happen? I'm so glad that history has | |
| 4559 completely documented the behavior of the scrolling functions under | |
| 4560 all circumstances. */ | |
| 1708 | 4561 tem = Fpos_visible_in_window_p (point, window, Qnil); |
| 428 | 4562 if (NILP (tem)) |
| 4563 { | |
| 4564 Fvertical_motion (make_int (-window_char_height (w, 0) / 2), | |
| 4565 window, Qnil); | |
| 4566 Fset_marker (w->start[CURRENT_DISP], point, w->buffer); | |
| 4567 w->start_at_line_beg = beginning_of_line_p (b, XINT (point)); | |
| 4568 WINDOW_TEXT_TOP_CLIP (w) = 0; | |
| 4569 MARK_WINDOWS_CHANGED (w); | |
| 4570 } | |
| 4571 | |
| 444 | 4572 if (!NILP (count)) |
| 428 | 4573 { |
| 444 | 4574 if (EQ (count, Qminus)) |
| 428 | 4575 direction *= -1; |
| 4576 else | |
| 4577 { | |
| 444 | 4578 count = Fprefix_numeric_value (count); |
| 4579 value = XINT (count) * direction; | |
| 428 | 4580 |
| 4581 if (!value) | |
| 4582 return; /* someone just made a pointless call */ | |
| 4583 } | |
| 4584 } | |
| 4585 | |
| 4586 /* If the user didn't specify how far to scroll then we have to figure it | |
| 4587 out by ourselves. */ | |
| 444 | 4588 if (NILP (count) || EQ (count, Qminus)) |
| 428 | 4589 { |
| 4590 /* Going forwards is easy. If that is what we are doing then just | |
| 4591 set value and the section which handles the user specifying a | |
| 4592 positive value will work. */ | |
| 4593 if (direction == 1) | |
| 4594 { | |
| 4595 value = window_displayed_height (w) - next_screen_context_lines; | |
| 4596 value = (value < 1 ? 1 : value); | |
| 4597 } | |
| 4598 | |
| 4599 /* Going backwards is hard. We can't use the same loop used if the | |
| 4600 user specified a negative value because we care about | |
| 4601 next_screen_context_lines. In a variable height world you don't | |
| 4602 know how many lines above you can actually be displayed and still | |
| 4603 have the context lines appear. So we leave value set to 0 and add | |
| 4604 a separate section to deal with this. */ | |
| 4605 | |
| 4606 } | |
| 4607 | |
| 4608 if (direction == 1 && !value) | |
| 4609 { | |
| 4610 return; | |
| 4611 } | |
| 4612 | |
| 4613 /* Determine parameters to test for partial line scrolling with. */ | |
| 4614 dla = window_display_lines (w, CURRENT_DISP); | |
| 4615 | |
| 4616 if (INTP (Vwindow_pixel_scroll_increment)) | |
| 4617 fheight = XINT (Vwindow_pixel_scroll_increment); | |
| 440 | 4618 else if (!NILP (Vwindow_pixel_scroll_increment)) |
|
5047
07dcc7000bbf
put width before height consistently, fix a real bug found in the process
Ben Wing <ben@xemacs.org>
parents:
5043
diff
changeset
|
4619 default_face_width_and_height (window, &fwidth, &fheight); |
| 438 | 4620 |
| 428 | 4621 if (Dynarr_length (dla) >= 1) |
| 4967 | 4622 modeline = Dynarr_begin (dla)->modeline; |
| 428 | 4623 |
| 4624 dl = Dynarr_atp (dla, modeline); | |
| 438 | 4625 |
| 428 | 4626 if (value > 0) |
| 4627 { | |
| 4628 /* Go for partial display line scrolling. This just means bumping | |
| 4629 the clip by a reasonable amount and redisplaying, everything else | |
| 4630 remains unchanged. */ | |
| 4631 if (!NILP (Vwindow_pixel_scroll_increment) | |
| 4632 && | |
| 4633 Dynarr_length (dla) >= (1 + modeline) | |
| 4634 && | |
| 458 | 4635 (dl->ascent - dl->top_clip) > fheight * value) |
| 428 | 4636 { |
| 4637 WINDOW_TEXT_TOP_CLIP (w) += value * fheight; | |
| 4638 MARK_WINDOWS_CHANGED (w); | |
| 4639 } | |
| 4640 else | |
| 4641 { | |
| 4642 int vtarget; | |
| 665 | 4643 Charbpos startp, old_start; |
| 438 | 4644 |
| 428 | 4645 if (WINDOW_TEXT_TOP_CLIP (w)) |
| 4646 { | |
| 4647 WINDOW_TEXT_TOP_CLIP (w) = 0; | |
| 4648 MARK_WINDOWS_CHANGED (w); | |
| 4649 } | |
| 4650 | |
| 4651 old_start = marker_position (w->start[CURRENT_DISP]); | |
| 4652 startp = vmotion (w, old_start, value, &vtarget); | |
| 438 | 4653 |
| 428 | 4654 if (vtarget < value && |
| 4655 (w->window_end_pos[CURRENT_DISP] == -1 | |
| 4656 || (BUF_Z (b) - w->window_end_pos[CURRENT_DISP] > BUF_ZV (b)))) | |
| 4657 { | |
| 563 | 4658 maybe_signal_error_1 (Qend_of_buffer, Qnil, Qwindow, errb); |
| 428 | 4659 return; |
| 4660 } | |
| 4661 else | |
| 4662 { | |
| 4663 set_marker_restricted (w->start[CURRENT_DISP], make_int (startp), | |
| 4664 w->buffer); | |
| 4665 w->force_start = 1; | |
| 4666 w->start_at_line_beg = beginning_of_line_p (b, startp); | |
| 4667 MARK_WINDOWS_CHANGED (w); | |
| 438 | 4668 |
| 1708 | 4669 if (!point_would_be_visible (w, startp, XINT (point), 0)) |
| 844 | 4670 Fset_window_point (wrap_window (w), make_int (startp)); |
| 428 | 4671 } |
| 4672 } | |
| 4673 } | |
| 4674 else if (value < 0) | |
| 4675 { | |
| 4676 /* Go for partial display line scrolling. This just means bumping | |
| 4677 the clip by a reasonable amount and redisplaying, everything else | |
| 4678 remains unchanged. */ | |
| 4679 if (!NILP (Vwindow_pixel_scroll_increment) | |
| 4680 && | |
| 4681 Dynarr_length (dla) >= (1 + modeline) | |
| 4682 && | |
| 4683 (dl->ascent - dl->top_clip) - fheight * value < | |
| 4684 (dl->ascent + dl->descent - dl->clip) | |
| 4685 && | |
| 4686 WINDOW_TEXT_TOP_CLIP (w) + value * fheight > 0) | |
| 4687 { | |
| 4688 WINDOW_TEXT_TOP_CLIP (w) += value * fheight; | |
| 4689 MARK_WINDOWS_CHANGED (w); | |
| 4690 } | |
| 4691 else | |
| 4692 { | |
| 4693 int vtarget; | |
| 665 | 4694 Charbpos startp, old_start; |
| 438 | 4695 |
| 428 | 4696 if (WINDOW_TEXT_TOP_CLIP (w)) |
| 4697 { | |
| 4698 WINDOW_TEXT_TOP_CLIP (w) = 0; | |
| 4699 MARK_WINDOWS_CHANGED (w); | |
| 4700 } | |
| 438 | 4701 |
| 428 | 4702 old_start = marker_position (w->start[CURRENT_DISP]); |
| 4703 startp = vmotion (w, old_start, value, &vtarget); | |
| 438 | 4704 |
| 428 | 4705 if (vtarget > value |
| 4706 && marker_position (w->start[CURRENT_DISP]) == BUF_BEGV (b)) | |
| 4707 { | |
| 563 | 4708 maybe_signal_error_1 (Qbeginning_of_buffer, Qnil, Qwindow, errb); |
| 428 | 4709 return; |
| 4710 } | |
| 4711 else | |
| 4712 { | |
| 4713 set_marker_restricted (w->start[CURRENT_DISP], make_int (startp), | |
| 4714 w->buffer); | |
| 4715 w->force_start = 1; | |
| 4716 w->start_at_line_beg = beginning_of_line_p (b, startp); | |
| 4717 MARK_WINDOWS_CHANGED (w); | |
| 438 | 4718 |
| 440 | 4719 /* #### Scroll back by less than a line. This code was |
| 4720 originally for scrolling over large pixmaps and it | |
| 4721 loses when a line being *exposed* at the top of the | |
| 4722 window is bigger than the current one. However, for | |
| 4723 pixel based scrolling in general we can guess that | |
| 4724 the line we are going to display is probably the same | |
| 4725 size as the one we are on. In that instance we can | |
| 4726 have a reasonable stab at a suitable top clip. Fixing | |
| 4727 this properly is hard (and probably slow) as we would | |
| 4728 have to call redisplay to figure out the exposed line | |
| 4729 size. */ | |
| 4730 if (!NILP (Vwindow_pixel_scroll_increment) | |
| 4731 && Dynarr_length (dla) >= (1 + modeline) | |
| 4732 && dl->ascent + fheight * value > 0) | |
| 4733 { | |
| 4734 WINDOW_TEXT_TOP_CLIP (w) = (dl->ascent + fheight * value); | |
| 4735 } | |
| 4736 | |
| 1708 | 4737 if (!point_would_be_visible (w, startp, XINT (point), 0)) |
| 428 | 4738 { |
| 665 | 4739 Charbpos new_point; |
| 438 | 4740 |
| 428 | 4741 if (MINI_WINDOW_P (w)) |
| 4742 new_point = startp; | |
| 4743 else | |
| 4744 new_point = start_of_last_line (w, startp); | |
| 438 | 4745 |
| 844 | 4746 Fset_window_point (wrap_window (w), make_int (new_point)); |
| 428 | 4747 } |
| 4748 } | |
| 4749 } | |
| 4750 } | |
| 4751 else /* value == 0 && direction == -1 */ | |
| 4752 { | |
| 4753 if (WINDOW_TEXT_TOP_CLIP (w)) | |
| 4754 { | |
| 4755 WINDOW_TEXT_TOP_CLIP (w) = 0; | |
| 4756 MARK_WINDOWS_CHANGED (w); | |
| 4757 } | |
| 4758 if (marker_position (w->start[CURRENT_DISP]) == BUF_BEGV (b)) | |
| 4759 { | |
| 563 | 4760 maybe_signal_error_1 (Qbeginning_of_buffer, Qnil, Qwindow, errb); |
| 428 | 4761 return; |
| 4762 } | |
| 4763 else | |
| 4764 { | |
| 4765 int vtarget; | |
| 4766 int movement = next_screen_context_lines - 1; | |
| 665 | 4767 Charbpos old_startp = marker_position (w->start[CURRENT_DISP]); |
| 4768 Charbpos bottom = vmotion (w, old_startp, movement, &vtarget); | |
| 4769 Charbpos startp = | |
| 428 | 4770 start_with_point_on_display_line (w, bottom, |
| 4771 -1 - (movement - vtarget)); | |
| 4772 | |
| 4773 if (startp >= old_startp) | |
| 4774 startp = vmotion (w, old_startp, -1, NULL); | |
| 4775 | |
| 4776 set_marker_restricted (w->start[CURRENT_DISP], make_int (startp), | |
| 4777 w->buffer); | |
| 4778 w->force_start = 1; | |
| 4779 w->start_at_line_beg = beginning_of_line_p (b, startp); | |
| 4780 MARK_WINDOWS_CHANGED (w); | |
| 4781 | |
| 1708 | 4782 if (!point_would_be_visible (w, startp, XINT (point), 0)) |
| 428 | 4783 { |
| 665 | 4784 Charbpos new_point = start_of_last_line (w, startp); |
| 428 | 4785 |
| 844 | 4786 Fset_window_point (wrap_window (w), make_int (new_point)); |
| 428 | 4787 } |
| 4788 } | |
| 4789 } | |
| 4790 } | |
| 4791 | |
| 4792 DEFUN ("scroll-up", Fscroll_up, 0, 1, "_P", /* | |
| 444 | 4793 Scroll text of current window up COUNT lines; or near full screen if no arg. |
| 428 | 4794 A near full screen is `next-screen-context-lines' less than a full screen. |
| 444 | 4795 Negative COUNT means scroll downward. |
| 428 | 4796 When calling from a program, supply an integer as argument or nil. |
| 4797 On attempt to scroll past end of buffer, `end-of-buffer' is signaled. | |
| 4798 On attempt to scroll past beginning of buffer, `beginning-of-buffer' is | |
| 4799 signaled. | |
| 462 | 4800 |
| 4801 The characters that are moved over may be added to the current selection | |
| 4802 \(i.e. active region) if the Shift key is held down, a motion key is used | |
| 4803 to invoke this command, and `shifted-motion-keys-select-region' is t; see | |
| 4804 the documentation for this variable for more details. | |
| 428 | 4805 */ |
| 444 | 4806 (count)) |
| 4807 { | |
| 4808 window_scroll (Fselected_window (Qnil), count, 1, ERROR_ME); | |
| 428 | 4809 return Qnil; |
| 4810 } | |
| 4811 | |
| 4812 DEFUN ("scroll-down", Fscroll_down, 0, 1, "_P", /* | |
| 444 | 4813 Scroll text of current window down COUNT lines; or near full screen if no arg. |
| 428 | 4814 A near full screen is `next-screen-context-lines' less than a full screen. |
| 444 | 4815 Negative COUNT means scroll upward. |
| 428 | 4816 When calling from a program, supply a number as argument or nil. |
| 4817 On attempt to scroll past end of buffer, `end-of-buffer' is signaled. | |
| 4818 On attempt to scroll past beginning of buffer, `beginning-of-buffer' is | |
| 4819 signaled. | |
| 462 | 4820 |
| 4821 The characters that are moved over may be added to the current selection | |
| 4822 \(i.e. active region) if the Shift key is held down, a motion key is used | |
| 4823 to invoke this command, and `shifted-motion-keys-select-region' is t; see | |
| 4824 the documentation for this variable for more details. | |
| 428 | 4825 */ |
| 444 | 4826 (count)) |
| 4827 { | |
| 4828 window_scroll (Fselected_window (Qnil), count, -1, ERROR_ME); | |
| 428 | 4829 return Qnil; |
| 4830 } | |
| 4831 | |
| 4832 DEFUN ("other-window-for-scrolling", Fother_window_for_scrolling, 0, 0, 0, /* | |
| 4833 Return the other window for "other window scroll" commands. | |
| 4834 If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
| 4835 specifies the window. | |
| 4836 If `other-window-scroll-buffer' is non-nil, a window | |
| 4837 showing that buffer is used. | |
| 4838 */ | |
| 4839 ()) | |
| 4840 { | |
| 4841 Lisp_Object window; | |
| 4842 Lisp_Object selected_window = Fselected_window (Qnil); | |
| 4843 | |
| 4844 if (MINI_WINDOW_P (XWINDOW (selected_window)) | |
| 4845 && !NILP (Vminibuffer_scroll_window)) | |
| 4846 window = Vminibuffer_scroll_window; | |
| 4847 /* If buffer is specified, scroll that buffer. */ | |
| 4848 else if (!NILP (Vother_window_scroll_buffer)) | |
| 4849 { | |
| 4850 window = Fget_buffer_window (Vother_window_scroll_buffer, Qnil, Qnil); | |
| 4851 if (NILP (window)) | |
| 4852 window = display_buffer (Vother_window_scroll_buffer, Qt, Qnil); | |
| 4853 } | |
| 4854 else | |
| 4855 { | |
| 4856 /* Nothing specified; look for a neighboring window on the same | |
| 4857 frame. */ | |
| 4858 window = Fnext_window (selected_window, Qnil, Qnil, Qnil); | |
| 4859 | |
| 4860 if (EQ (window, selected_window)) | |
| 4861 /* That didn't get us anywhere; look for a window on another | |
| 4862 visible frame. */ | |
| 4863 do | |
| 4864 window = Fnext_window (window, Qnil, Qt, Qnil); | |
| 4865 while (! FRAME_VISIBLE_P (XFRAME (WINDOW_FRAME (XWINDOW (window)))) | |
| 4866 && ! EQ (window, selected_window)); | |
| 4867 } | |
| 4868 | |
| 4869 CHECK_LIVE_WINDOW (window); | |
| 4870 | |
| 4871 if (EQ (window, selected_window)) | |
| 563 | 4872 invalid_operation ("There is no other window", Qunbound); |
| 428 | 4873 |
| 4874 return window; | |
| 4875 } | |
| 4876 | |
| 4877 DEFUN ("scroll-other-window", Fscroll_other_window, 0, 1, "_P", /* | |
| 444 | 4878 Scroll next window upward COUNT lines; or near full frame if no arg. |
| 428 | 4879 The next window is the one below the current one; or the one at the top |
| 444 | 4880 if the current one is at the bottom. Negative COUNT means scroll downward. |
| 428 | 4881 When calling from a program, supply a number as argument or nil. |
| 4882 | |
| 4883 If in the minibuffer, `minibuffer-scroll-window' if non-nil | |
| 4884 specifies the window to scroll. | |
| 4885 If `other-window-scroll-buffer' is non-nil, scroll the window | |
| 4886 showing that buffer, popping the buffer up if necessary. | |
| 4887 */ | |
| 444 | 4888 (count)) |
| 4889 { | |
| 4890 window_scroll (Fother_window_for_scrolling (), count, 1, ERROR_ME); | |
| 428 | 4891 return Qnil; |
| 4892 } | |
| 4893 | |
| 4894 DEFUN ("scroll-left", Fscroll_left, 0, 1, "_P", /* | |
| 444 | 4895 Scroll selected window display COUNT columns left. |
| 4896 Default for COUNT is window width minus 2. | |
| 462 | 4897 |
| 4898 The characters that are moved over may be added to the current selection | |
| 4899 \(i.e. active region) if the Shift key is held down, a motion key is used | |
| 4900 to invoke this command, and `shifted-motion-keys-select-region' is t; see | |
| 4901 the documentation for this variable for more details. | |
| 428 | 4902 */ |
| 444 | 4903 (count)) |
| 428 | 4904 { |
| 4905 Lisp_Object window = Fselected_window (Qnil); | |
| 4906 struct window *w = XWINDOW (window); | |
| 444 | 4907 int n = (NILP (count) ? |
| 4908 window_char_width (w, 0) - 2 : | |
| 4909 XINT (Fprefix_numeric_value (count))); | |
| 4910 | |
| 4911 return Fset_window_hscroll (window, make_int (w->hscroll + n)); | |
| 428 | 4912 } |
| 4913 | |
| 4914 DEFUN ("scroll-right", Fscroll_right, 0, 1, "_P", /* | |
| 444 | 4915 Scroll selected window display COUNT columns right. |
| 4916 Default for COUNT is window width minus 2. | |
| 462 | 4917 |
| 4918 The characters that are moved over may be added to the current selection | |
| 4919 \(i.e. active region) if the Shift key is held down, a motion key is used | |
| 4920 to invoke this command, and `shifted-motion-keys-select-region' is t; see | |
| 4921 the documentation for this variable for more details. | |
| 428 | 4922 */ |
| 444 | 4923 (count)) |
| 428 | 4924 { |
| 4925 Lisp_Object window = Fselected_window (Qnil); | |
| 4926 struct window *w = XWINDOW (window); | |
| 444 | 4927 int n = (NILP (count) ? |
| 4928 window_char_width (w, 0) - 2 : | |
| 4929 XINT (Fprefix_numeric_value (count))); | |
| 4930 | |
| 4931 return Fset_window_hscroll (window, make_int (w->hscroll - n)); | |
| 428 | 4932 } |
| 4933 | |
| 4934 DEFUN ("center-to-window-line", Fcenter_to_window_line, 0, 2, "_P", /* | |
| 4935 Center point in WINDOW. With N, put point on line N. | |
| 4936 The desired position of point is always relative to the window. | |
| 4937 If WINDOW is nil, the selected window is used. | |
| 4938 */ | |
| 4939 (n, window)) | |
| 4940 { | |
| 4941 struct window *w = decode_window (window); | |
| 4942 struct buffer *b = XBUFFER (w->buffer); | |
| 665 | 4943 Charbpos opoint = BUF_PT (b); |
| 4944 Charbpos startp; | |
| 428 | 4945 |
| 4946 if (NILP (n)) | |
| 4947 startp = start_with_line_at_pixpos (w, opoint, window_half_pixpos (w)); | |
| 4948 else | |
| 4949 { | |
| 4950 n = Fprefix_numeric_value (n); | |
| 4951 CHECK_INT (n); | |
| 4952 startp = start_with_point_on_display_line (w, opoint, XINT (n)); | |
| 4953 } | |
| 4954 | |
| 4955 Fset_marker (w->start[CURRENT_DISP], make_int (startp), w->buffer); | |
| 4956 | |
| 4957 w->start_at_line_beg = beginning_of_line_p (b, startp); | |
| 4958 w->force_start = 1; | |
| 4959 MARK_WINDOWS_CHANGED (w); | |
| 4960 return Qnil; | |
| 4961 } | |
| 4962 | |
| 4963 DEFUN ("move-to-window-line", Fmove_to_window_line, 1, 2, "_P", /* | |
| 4964 Position point relative to WINDOW. | |
| 4965 With no argument, position text at center of window. | |
| 4966 An argument specifies window line; zero means top of window, | |
| 4967 negative means relative to bottom of window. | |
| 4968 If WINDOW is nil, the selected window is used. | |
| 4969 */ | |
| 4970 (arg, window)) | |
| 4971 { | |
| 4972 struct window *w; | |
| 4973 struct buffer *b; | |
| 4974 int height; | |
| 665 | 4975 Charbpos start, new_point; |
| 428 | 4976 int selected; |
| 4977 | |
| 4978 /* Don't use decode_window() because we need the new value of | |
| 4979 WINDOW. */ | |
| 4980 if (NILP (window)) | |
| 4981 window = Fselected_window (Qnil); | |
| 4982 else | |
| 4983 CHECK_LIVE_WINDOW (window); | |
| 4984 w = XWINDOW (window); | |
| 4985 b = XBUFFER (w->buffer); | |
| 4986 | |
| 4987 height = window_displayed_height (w); | |
| 4988 selected = EQ (window, Fselected_window (w->frame)); | |
| 4989 | |
| 4990 if (NILP (arg)) | |
| 4991 { | |
| 4992 int retval; | |
| 4993 | |
| 4994 if (XINT (w->last_modified[CURRENT_DISP]) >= BUF_MODIFF (b) | |
| 4995 && XINT (w->last_facechange[CURRENT_DISP]) >= BUF_FACECHANGE (b)) | |
| 4996 { | |
| 4997 new_point = point_at_center (w, CURRENT_DISP, 0, 0); | |
| 4998 | |
| 844 | 4999 /* #### Here we are checking the selected window of the frame |
| 5000 instead of the selected window period. Elsewhere we check | |
| 5001 the selected window of the device. What a mess! */ | |
| 428 | 5002 if (selected) |
| 5003 BUF_SET_PT (b, new_point); | |
| 5004 else | |
| 5005 Fset_window_point (window, make_int (new_point)); | |
| 5006 | |
| 5007 retval = line_at_center (w, CURRENT_DISP, 0, 0); | |
| 5008 } | |
| 5009 else | |
| 5010 { | |
| 5011 start = marker_position (w->start[CURRENT_DISP]); | |
| 5012 if (start < BUF_BEGV (b)) | |
| 5013 start = BUF_BEGV (b); | |
| 5014 else if (start > BUF_ZV (b)) | |
| 5015 start = BUF_ZV (b); | |
| 5016 | |
| 5017 if (selected) | |
| 5018 new_point = BUF_PT (b); | |
| 5019 else | |
| 5020 new_point = marker_position (w->pointm[CURRENT_DISP]); | |
| 5021 | |
| 5022 new_point = point_at_center (w, CMOTION_DISP, start, BUF_PT (b)); | |
| 5023 | |
| 5024 if (selected) | |
| 5025 BUF_SET_PT (b, new_point); | |
| 5026 else | |
| 5027 Fset_window_point (window, make_int (new_point)); | |
| 5028 | |
| 5029 retval = line_at_center (w, CMOTION_DISP, start, BUF_PT (b)); | |
| 5030 } | |
| 5031 | |
| 5032 return make_int (retval); | |
| 5033 } | |
| 5034 else | |
| 5035 { | |
| 5036 /* #### Is this going to work right when at eob? */ | |
| 5037 arg = Fprefix_numeric_value (arg); | |
| 5038 if (XINT (arg) < 0) | |
| 793 | 5039 arg = make_int (XINT (arg) + height); |
| 428 | 5040 } |
| 5041 | |
| 5042 start = marker_position (w->start[CURRENT_DISP]); | |
| 5043 if (start < BUF_BEGV (b) || start > BUF_ZV (b)) | |
| 5044 { | |
| 5045 if (selected) | |
| 5046 new_point = BUF_PT (b); | |
| 5047 else | |
| 5048 new_point = marker_position (w->pointm[CURRENT_DISP]); | |
| 5049 | |
| 5050 new_point = vmotion (XWINDOW (window), new_point, -height / 2, 0); | |
| 5051 | |
| 5052 if (selected) | |
| 5053 BUF_SET_PT (b, new_point); | |
| 5054 else | |
| 5055 Fset_window_point (window, make_int (new_point)); | |
| 5056 | |
| 5057 Fset_marker (w->start[CURRENT_DISP], make_int (new_point), | |
| 5058 w->buffer); | |
| 5059 w->start_at_line_beg = beginning_of_line_p (b, new_point); | |
| 5060 w->force_start = 1; | |
| 5061 } | |
| 5062 else | |
| 5063 { | |
| 5064 if (selected) | |
| 5065 BUF_SET_PT (b, start); | |
| 5066 else | |
| 5067 Fset_window_point (window, make_int (start)); | |
| 5068 } | |
| 5069 | |
| 5070 if (selected) | |
| 5071 return Fvertical_motion (arg, window, Qnil); | |
| 5072 else | |
| 5073 { | |
| 5074 int vpos; | |
| 5075 new_point = vmotion (XWINDOW (window), | |
| 5076 marker_position (w->pointm[CURRENT_DISP]), | |
| 5077 XINT (arg), &vpos); | |
| 5078 Fset_window_point (window, make_int (new_point)); | |
| 5079 return make_int (vpos); | |
| 5080 } | |
| 5081 } | |
| 5082 | |
| 5083 | |
| 5084 static int | |
| 5085 map_windows_1 (Lisp_Object window, | |
| 5086 int (*mapfun) (struct window *w, void *closure), | |
| 5087 void *closure) | |
| 5088 { | |
| 5089 for (; !NILP (window); window = XWINDOW (window)->next) | |
| 5090 { | |
| 5091 int retval; | |
| 5092 struct window *w = XWINDOW (window); | |
| 5093 | |
| 5094 if (!NILP (w->vchild)) | |
| 5095 retval = map_windows_1 (w->vchild, mapfun, closure); | |
| 5096 else if (!NILP (w->hchild)) | |
| 5097 retval = map_windows_1 (w->hchild, mapfun, closure); | |
| 5098 else | |
| 5099 retval = (mapfun) (w, closure); | |
| 5100 | |
| 5101 if (retval) | |
| 5102 return retval; | |
| 5103 } | |
| 5104 | |
| 5105 return 0; | |
| 5106 } | |
| 5107 | |
| 5108 /* Map MAPFUN over the windows in F. CLOSURE is passed to each | |
| 5109 invocation of MAPFUN. If any invocation of MAPFUN returns | |
| 5110 non-zero, the mapping is halted. Otherwise, map_windows() maps | |
| 5111 over all windows in F. | |
| 5112 | |
| 800 | 5113 If F is null, map over all frames on all devices and consoles. |
| 5114 | |
| 428 | 5115 If MAPFUN creates or deletes windows, the behavior is undefined. */ |
| 5116 | |
| 5117 int | |
| 5118 map_windows (struct frame *f, int (*mapfun) (struct window *w, void *closure), | |
| 5119 void *closure) | |
| 5120 { | |
| 5121 if (f) | |
| 5122 return map_windows_1 (FRAME_ROOT_WINDOW (f), mapfun, closure); | |
| 5123 else | |
| 5124 { | |
| 5125 Lisp_Object frmcons, devcons, concons; | |
| 5126 | |
| 5127 FRAME_LOOP_NO_BREAK(frmcons, devcons, concons) | |
| 5128 { | |
| 5129 int v = map_windows_1 (FRAME_ROOT_WINDOW (XFRAME (XCAR (frmcons))), | |
| 5130 mapfun, closure); | |
| 5131 if (v) | |
| 5132 return v; | |
| 5133 } | |
| 5134 } | |
| 5135 | |
| 5136 return 0; | |
| 5137 } | |
| 5138 | |
| 5139 | |
| 5140 static void | |
| 2286 | 5141 modeline_shadow_thickness_changed (Lisp_Object UNUSED (specifier), |
| 5142 struct window *w, | |
| 5143 Lisp_Object UNUSED (oldval)) | |
| 428 | 5144 { |
| 5145 w->shadow_thickness_changed = 1; | |
| 5146 MARK_WINDOWS_CHANGED (w); | |
| 5147 } | |
| 5148 | |
| 5149 static void | |
| 2286 | 5150 vertical_divider_changed_in_window (Lisp_Object UNUSED (specifier), |
| 428 | 5151 struct window *w, |
| 2286 | 5152 Lisp_Object UNUSED (oldval)) |
| 428 | 5153 { |
| 5154 MARK_WINDOWS_CHANGED (w); | |
| 5155 MARK_FRAME_WINDOWS_STRUCTURE_CHANGED (XFRAME (WINDOW_FRAME (w))); | |
| 5156 } | |
| 5157 | |
| 5158 /* also used in scrollbar.c */ | |
| 5159 void | |
| 2286 | 5160 some_window_value_changed (Lisp_Object UNUSED (specifier), |
| 5161 struct window *w, | |
| 5162 Lisp_Object UNUSED (oldval)) | |
| 428 | 5163 { |
| 5164 MARK_WINDOWS_CHANGED (w); | |
| 5165 } | |
| 5166 | |
| 5167 #ifdef MEMORY_USAGE_STATS | |
| 5168 | |
| 5169 struct window_stats | |
| 5170 { | |
| 5171 int face; | |
| 5172 int glyph; | |
| 5173 #ifdef HAVE_SCROLLBARS | |
| 5174 int scrollbar; | |
| 5175 #endif | |
| 5176 int line_start; | |
| 5177 int other_redisplay; | |
| 5178 int other; | |
| 5179 }; | |
| 5180 | |
| 5181 static void | |
| 5182 compute_window_mirror_usage (struct window_mirror *mir, | |
| 5183 struct window_stats *stats, | |
| 5184 struct overhead_stats *ovstats) | |
| 5185 { | |
| 5186 if (!mir) | |
| 5187 return; | |
| 3024 | 5188 stats->other += LISPOBJ_STORAGE_SIZE (mir, sizeof (*mir), ovstats); |
| 428 | 5189 #ifdef HAVE_SCROLLBARS |
| 5190 { | |
| 5191 struct device *d = XDEVICE (FRAME_DEVICE (mir->frame)); | |
| 5192 | |
| 5193 stats->scrollbar += | |
| 5194 compute_scrollbar_instance_usage (d, mir->scrollbar_vertical_instance, | |
| 5195 ovstats); | |
| 5196 stats->scrollbar += | |
| 5197 compute_scrollbar_instance_usage (d, mir->scrollbar_horizontal_instance, | |
| 5198 ovstats); | |
| 5199 } | |
| 5200 #endif /* HAVE_SCROLLBARS */ | |
| 5201 stats->other_redisplay += | |
| 5202 compute_display_line_dynarr_usage (mir->current_display_lines, ovstats); | |
| 5203 stats->other_redisplay += | |
| 5204 compute_display_line_dynarr_usage (mir->desired_display_lines, ovstats); | |
| 5205 } | |
| 5206 | |
| 5207 static void | |
| 5208 compute_window_usage (struct window *w, struct window_stats *stats, | |
| 5209 struct overhead_stats *ovstats) | |
| 5210 { | |
| 5211 xzero (*stats); | |
| 3024 | 5212 stats->other += LISPOBJ_STORAGE_SIZE (w, sizeof (*w), ovstats); |
| 428 | 5213 stats->face += compute_face_cachel_usage (w->face_cachels, ovstats); |
| 5214 stats->glyph += compute_glyph_cachel_usage (w->glyph_cachels, ovstats); | |
| 5215 stats->line_start += | |
| 5216 compute_line_start_cache_dynarr_usage (w->line_start_cache, ovstats); | |
| 5217 compute_window_mirror_usage (find_window_mirror (w), stats, ovstats); | |
| 5218 } | |
| 5219 | |
| 5220 DEFUN ("window-memory-usage", Fwindow_memory_usage, 1, 1, 0, /* | |
| 5221 Return stats about the memory usage of window WINDOW. | |
| 5222 The values returned are in the form of an alist of usage types and byte | |
| 5223 counts. The byte counts attempt to encompass all the memory used | |
| 5224 by the window (separate from the memory logically associated with a | |
| 5225 buffer or frame), including internal structures and any malloc() | |
| 5226 overhead associated with them. In practice, the byte counts are | |
| 5227 underestimated because certain memory usage is very hard to determine | |
| 5228 \(e.g. the amount of memory used inside the Xt library or inside the | |
| 5229 X server) and because there is other stuff that might logically | |
| 5230 be associated with a window, buffer, or frame (e.g. window configurations, | |
| 5231 glyphs) but should not obviously be included in the usage counts. | |
| 5232 | |
| 5233 Multiple slices of the total memory usage may be returned, separated | |
| 5234 by a nil. Each slice represents a particular view of the memory, a | |
| 5235 particular way of partitioning it into groups. Within a slice, there | |
| 5236 is no overlap between the groups of memory, and each slice collectively | |
| 5237 represents all the memory concerned. | |
| 5238 */ | |
| 5239 (window)) | |
| 5240 { | |
| 5241 struct window_stats stats; | |
| 5242 struct overhead_stats ovstats; | |
| 5243 Lisp_Object val = Qnil; | |
| 5244 | |
| 5245 CHECK_WINDOW (window); /* dead windows should be allowed, no? */ | |
| 5246 xzero (ovstats); | |
| 5247 compute_window_usage (XWINDOW (window), &stats, &ovstats); | |
| 5248 | |
| 5249 val = acons (Qface_cache, make_int (stats.face), val); | |
| 5250 val = acons (Qglyph_cache, make_int (stats.glyph), val); | |
| 5251 #ifdef HAVE_SCROLLBARS | |
| 5252 val = acons (Qscrollbar_instances, make_int (stats.scrollbar), val); | |
| 5253 #endif | |
| 5254 val = acons (Qline_start_cache, make_int (stats.line_start), val); | |
| 5255 val = acons (Qother_redisplay, make_int (stats.other_redisplay), val); | |
| 5256 val = acons (Qother, make_int (stats.other), val); | |
| 5257 val = Fcons (Qnil, val); | |
| 5258 val = acons (Qactually_requested, make_int (ovstats.was_requested), val); | |
| 5259 val = acons (Qmalloc_overhead, make_int (ovstats.malloc_overhead), val); | |
| 5260 val = acons (Qdynarr_overhead, make_int (ovstats.dynarr_overhead), val); | |
| 5261 | |
| 5262 return Fnreverse (val); | |
| 5263 } | |
| 5264 | |
| 5265 #endif /* MEMORY_USAGE_STATS */ | |
| 5266 | |
| 5267 /* Mark all subwindows of a window as deleted. The argument | |
| 5268 W is actually the subwindow tree of the window in question. */ | |
| 5269 | |
| 5270 void | |
| 5271 delete_all_subwindows (struct window *w) | |
| 5272 { | |
| 5273 if (!NILP (w->next)) delete_all_subwindows (XWINDOW (w->next)); | |
| 5274 if (!NILP (w->vchild)) delete_all_subwindows (XWINDOW (w->vchild)); | |
| 5275 if (!NILP (w->hchild)) delete_all_subwindows (XWINDOW (w->hchild)); | |
| 5276 | |
| 5277 mark_window_as_deleted (w); | |
| 5278 } | |
| 5279 | |
| 1149 | 5280 |
| 2289 | 5281 static int |
| 5282 get_current_pixel_pos (Lisp_Object window, Lisp_Object pos, | |
| 5283 struct window **w, | |
| 5284 struct rune **rb, struct display_line **dl) | |
| 428 | 5285 { |
| 2289 | 5286 display_line_dynarr *dla; |
| 5287 struct display_block *db = NULL; | |
| 5288 int x, y; | |
| 5289 | |
| 5290 *rb = NULL; | |
| 5291 *dl = NULL; | |
| 5292 *w = decode_window (window); | |
| 5293 dla = window_display_lines (*w, CURRENT_DISP); | |
| 5294 x = (*w)->last_point_x[CURRENT_DISP]; | |
| 5295 y = (*w)->last_point_y[CURRENT_DISP]; | |
| 5296 if (MINI_WINDOW_P (*w)) | |
| 5297 return 0; | |
| 428 | 5298 |
| 5299 if (y<0 || x<0 || y >= Dynarr_length (dla) || !NILP (pos)) | |
| 5300 { | |
| 5301 int first_line, i; | |
| 665 | 5302 Charbpos point; |
| 428 | 5303 |
| 5304 if (NILP (pos)) | |
| 5305 pos = Fwindow_point (window); | |
| 438 | 5306 |
| 428 | 5307 CHECK_INT (pos); |
| 5308 point = XINT (pos); | |
| 5309 | |
| 4967 | 5310 if (Dynarr_length (dla) && Dynarr_begin (dla)->modeline) |
| 428 | 5311 first_line = 1; |
| 5312 else | |
| 5313 first_line = 0; | |
| 5314 | |
| 5315 for (i = first_line; i < Dynarr_length (dla); i++) | |
| 5316 { | |
| 2289 | 5317 *dl = Dynarr_atp (dla, i); |
| 428 | 5318 /* find the vertical location first */ |
| 2289 | 5319 if (point >= (*dl)->charpos && point <= (*dl)->end_charpos) |
| 428 | 5320 { |
| 2289 | 5321 db = get_display_block_from_line (*dl, TEXT); |
| 428 | 5322 for (i = 0; i < Dynarr_length (db->runes); i++) |
| 5323 { | |
| 2289 | 5324 *rb = Dynarr_atp (db->runes, i); |
| 2290 | 5325 if (point <= (*rb)->charpos) |
| 826 | 5326 goto found_charpos; |
| 428 | 5327 } |
| 2289 | 5328 return 0; |
| 428 | 5329 } |
| 5330 } | |
| 2289 | 5331 return 0; |
| 826 | 5332 found_charpos: |
| 428 | 5333 ; |
| 5334 } | |
| 5335 else | |
| 5336 { | |
| 442 | 5337 /* optimized case */ |
| 2289 | 5338 *dl = Dynarr_atp (dla, y); |
| 5339 db = get_display_block_from_line (*dl, TEXT); | |
| 428 | 5340 |
| 5341 if (x >= Dynarr_length (db->runes)) | |
| 2289 | 5342 return 0; |
| 5343 | |
| 5344 *rb = Dynarr_atp (db->runes, x); | |
| 428 | 5345 } |
| 5346 | |
| 2289 | 5347 return 1; |
| 5348 } | |
| 5349 | |
| 5350 DEFUN ("current-pixel-column", Fcurrent_pixel_column, 0, 2, 0, /* | |
| 5351 Return the horizontal pixel position of point POS in window. | |
| 5352 Beginning of line is column 0. If WINDOW is nil, the current window | |
| 5353 is assumed. If POS is nil, point is assumed. Note that POS must be | |
| 5354 visible for a non-nil result to be returned. This is calculated using | |
| 5355 the redisplay display tables; because of this, the returned value will | |
| 5356 only be correct if the redisplay tables are up-to-date. Use | |
| 5357 \"(sit-for 0)\" to insure that they are; however, if WINDOW is part of | |
| 5358 a new frame, use the following instead: | |
| 5359 (while (not (frame-visible-p frame)) (sleep-for .5)) | |
| 5360 */ | |
| 5361 (window, pos)) | |
| 5362 { | |
| 5363 struct window* w; | |
| 5364 struct display_line *dl; | |
| 5365 struct rune* rb; | |
| 5366 | |
| 5367 if (!get_current_pixel_pos(window, pos, &w, &rb, &dl)) | |
| 5368 return Qnil; | |
| 5369 | |
| 428 | 5370 return make_int (rb->xpos - WINDOW_LEFT (w)); |
| 5371 } | |
| 5372 | |
| 2289 | 5373 DEFUN ("current-pixel-row", Fcurrent_pixel_row, 0, 2, 0, /* |
| 5374 Return the vertical pixel position of point POS in window. Top of | |
| 5375 window is row 0. If WINDOW is nil, the current window is assumed. If | |
| 5376 POS is nil, point is assumed. Note that POS must be visible for a | |
| 5377 non-nil result to be returned. This is calculated using the redisplay | |
| 5378 display tables; because of this, the returned value will only be | |
| 5379 correct if the redisplay tables are up-to-date. Use \"(sit-for 0)\" | |
| 5380 to insure that they are; however, if WINDOW is part of a new frame, | |
| 5381 use the following instead: | |
| 5382 (while (not (frame-visible-p frame)) (sleep-for .5)) | |
| 5383 */ | |
| 5384 (window, pos)) | |
| 5385 { | |
| 5386 struct window* w; | |
| 5387 struct display_line *dl; | |
| 5388 struct rune* rb; | |
| 5389 | |
| 5390 if (!get_current_pixel_pos(window, pos, &w, &rb, &dl)) | |
| 5391 return Qnil; | |
| 5392 | |
| 5393 return make_int (dl->ypos - dl->ascent - WINDOW_TOP (w)); | |
| 5394 } | |
| 5395 | |
| 428 | 5396 |
| 5397 #ifdef DEBUG_XEMACS | |
| 5398 /* This is short and simple in elisp, but... it was written to debug | |
| 5399 problems purely on the C side. That is where we need to call it so | |
| 5400 here it is. */ | |
| 5401 static void | |
| 5402 debug_print_window (Lisp_Object window, int level) | |
| 5403 { | |
| 5404 int i; | |
| 5405 Lisp_Object child = Fwindow_first_vchild (window); | |
| 5406 | |
| 5407 if (NILP (child)) | |
| 5408 child = Fwindow_first_hchild (window); | |
| 5409 | |
| 5410 for (i = level; i > 0; i--) | |
| 442 | 5411 stderr_out ("\t"); |
| 5412 | |
| 5413 stderr_out ("#<window"); | |
| 428 | 5414 { |
| 5415 Lisp_Object buffer = XWINDOW (window)->buffer; | |
| 5416 if (!NILP (buffer) && BUFFERP (buffer)) | |
| 442 | 5417 stderr_out (" on %s", XSTRING_DATA (XBUFFER (buffer)->name)); |
| 428 | 5418 } |
| 442 | 5419 stderr_out (" 0x%x>", XWINDOW (window)->header.uid); |
| 428 | 5420 |
| 5421 while (!NILP (child)) | |
| 5422 { | |
| 5423 debug_print_window (child, level + 1); | |
| 5424 child = Fwindow_next_child (child); | |
| 5425 } | |
| 5426 } | |
| 5427 | |
| 5428 void debug_print_windows (struct frame *f); | |
| 5429 void | |
| 5430 debug_print_windows (struct frame *f) | |
| 5431 { | |
| 5432 debug_print_window (f->root_window, 0); | |
| 5433 putc ('\n', stderr); | |
| 5434 } | |
| 5435 #endif /* DEBUG_XEMACS */ | |
| 5436 | |
| 5437 | |
| 5438 /************************************************************************/ | |
| 5439 /* initialization */ | |
| 5440 /************************************************************************/ | |
| 5441 | |
| 5442 void | |
| 5443 syms_of_window (void) | |
| 5444 { | |
| 442 | 5445 INIT_LRECORD_IMPLEMENTATION (window); |
| 617 | 5446 INIT_LRECORD_IMPLEMENTATION (window_mirror); |
| 3092 | 5447 #ifdef NEW_GC |
| 5448 INIT_LRECORD_IMPLEMENTATION (face_cachel); | |
| 5449 INIT_LRECORD_IMPLEMENTATION (face_cachel_dynarr); | |
| 5450 INIT_LRECORD_IMPLEMENTATION (glyph_cachel); | |
| 5451 INIT_LRECORD_IMPLEMENTATION (glyph_cachel_dynarr); | |
| 5452 #endif /* NEW_GC */ | |
| 442 | 5453 |
| 563 | 5454 DEFSYMBOL (Qwindowp); |
| 5455 DEFSYMBOL (Qwindow_live_p); | |
| 5456 DEFSYMBOL (Qdisplay_buffer); | |
| 428 | 5457 |
| 5458 #ifdef MEMORY_USAGE_STATS | |
| 563 | 5459 DEFSYMBOL (Qface_cache); |
| 5460 DEFSYMBOL (Qglyph_cache); | |
| 5461 DEFSYMBOL (Qline_start_cache); | |
| 428 | 5462 #ifdef HAVE_SCROLLBARS |
| 563 | 5463 DEFSYMBOL (Qscrollbar_instances); |
| 428 | 5464 #endif |
| 563 | 5465 DEFSYMBOL (Qother_redisplay); |
| 428 | 5466 /* Qother in general.c */ |
| 5467 #endif | |
| 5468 | |
| 707 | 5469 DEFSYMBOL (Qtruncate_partial_width_windows); |
| 1149 | 5470 DEFSYMBOL (Qcurrent_window_configuration); |
| 5471 DEFSYMBOL (Qset_window_configuration); | |
| 707 | 5472 |
| 428 | 5473 DEFSUBR (Fselected_window); |
| 5474 DEFSUBR (Flast_nonminibuf_window); | |
| 5475 DEFSUBR (Fminibuffer_window); | |
| 5476 DEFSUBR (Fwindow_minibuffer_p); | |
| 5477 DEFSUBR (Fwindowp); | |
| 5478 DEFSUBR (Fwindow_live_p); | |
| 5479 DEFSUBR (Fwindow_first_hchild); | |
| 5480 DEFSUBR (Fwindow_first_vchild); | |
| 5481 DEFSUBR (Fwindow_next_child); | |
| 5482 DEFSUBR (Fwindow_previous_child); | |
| 5483 DEFSUBR (Fwindow_parent); | |
| 5484 DEFSUBR (Fwindow_lowest_p); | |
| 5485 DEFSUBR (Fwindow_truncated_p); | |
| 5486 DEFSUBR (Fwindow_highest_p); | |
| 5487 DEFSUBR (Fwindow_leftmost_p); | |
| 5488 DEFSUBR (Fwindow_rightmost_p); | |
| 5489 DEFSUBR (Fpos_visible_in_window_p); | |
| 5490 DEFSUBR (Fwindow_buffer); | |
| 5491 DEFSUBR (Fwindow_frame); | |
| 5492 DEFSUBR (Fwindow_height); | |
| 5493 DEFSUBR (Fwindow_displayed_height); | |
| 5494 DEFSUBR (Fwindow_width); | |
| 442 | 5495 DEFSUBR (Fwindow_full_width); |
| 428 | 5496 DEFSUBR (Fwindow_pixel_height); |
| 5497 DEFSUBR (Fwindow_pixel_width); | |
| 442 | 5498 DEFSUBR (Fwindow_text_area_height); |
| 428 | 5499 DEFSUBR (Fwindow_text_area_pixel_height); |
| 5500 DEFSUBR (Fwindow_displayed_text_pixel_height); | |
| 5501 DEFSUBR (Fwindow_text_area_pixel_width); | |
| 5502 DEFSUBR (Fwindow_hscroll); | |
| 438 | 5503 DEFSUBR (Fset_window_hscroll); |
| 428 | 5504 DEFSUBR (Fmodeline_hscroll); |
| 5505 DEFSUBR (Fset_modeline_hscroll); | |
| 5506 DEFSUBR (Fwindow_pixel_edges); | |
| 5507 DEFSUBR (Fwindow_text_area_pixel_edges); | |
| 5508 DEFSUBR (Fwindow_point); | |
| 5509 DEFSUBR (Fwindow_start); | |
| 5510 DEFSUBR (Fwindow_end); | |
| 442 | 5511 DEFSUBR (Fwindow_last_line_visible_height); |
| 428 | 5512 DEFSUBR (Fset_window_point); |
| 5513 DEFSUBR (Fset_window_start); | |
| 5514 DEFSUBR (Fwindow_dedicated_p); | |
| 5515 DEFSUBR (Fset_window_dedicated_p); | |
| 5516 DEFSUBR (Fnext_window); | |
| 5517 DEFSUBR (Fprevious_window); | |
| 5518 DEFSUBR (Fnext_vertical_window); | |
| 5519 DEFSUBR (Fother_window); | |
| 5520 DEFSUBR (Fget_lru_window); | |
| 5521 DEFSUBR (Fget_largest_window); | |
| 5522 DEFSUBR (Fget_buffer_window); | |
| 5523 DEFSUBR (Fwindow_left_margin_pixel_width); | |
| 5524 DEFSUBR (Fwindow_right_margin_pixel_width); | |
| 5525 DEFSUBR (Fdelete_other_windows); | |
| 5526 DEFSUBR (Fdelete_windows_on); | |
| 5527 DEFSUBR (Freplace_buffer_in_windows); | |
| 5528 DEFSUBR (Fdelete_window); | |
| 5529 DEFSUBR (Fset_window_buffer); | |
| 5530 DEFSUBR (Fselect_window); | |
| 5531 DEFSUBR (Fsplit_window); | |
| 5532 DEFSUBR (Fenlarge_window); | |
| 5533 DEFSUBR (Fenlarge_window_pixels); | |
| 5534 DEFSUBR (Fshrink_window); | |
| 5535 DEFSUBR (Fshrink_window_pixels); | |
| 5536 DEFSUBR (Fscroll_up); | |
| 5537 DEFSUBR (Fscroll_down); | |
| 5538 DEFSUBR (Fscroll_left); | |
| 5539 DEFSUBR (Fscroll_right); | |
| 5540 DEFSUBR (Fother_window_for_scrolling); | |
| 5541 DEFSUBR (Fscroll_other_window); | |
| 5542 DEFSUBR (Fcenter_to_window_line); | |
| 5543 DEFSUBR (Fmove_to_window_line); | |
| 5544 #ifdef MEMORY_USAGE_STATS | |
| 5545 DEFSUBR (Fwindow_memory_usage); | |
| 5546 #endif | |
| 5547 DEFSUBR (Fcurrent_pixel_column); | |
| 2289 | 5548 DEFSUBR (Fcurrent_pixel_row); |
| 428 | 5549 } |
| 5550 | |
| 5551 void | |
| 5552 reinit_vars_of_window (void) | |
| 5553 { | |
| 5554 /* Make sure all windows get marked */ | |
| 5555 minibuf_window = Qnil; | |
| 5556 staticpro_nodump (&minibuf_window); | |
| 5557 } | |
| 5558 | |
| 5559 void | |
| 5560 vars_of_window (void) | |
| 5561 { | |
| 5562 DEFVAR_BOOL ("scroll-on-clipped-lines", &scroll_on_clipped_lines /* | |
| 5563 *Non-nil means to scroll if point lands on a line which is clipped. | |
| 5564 */ ); | |
| 5565 scroll_on_clipped_lines = 1; | |
| 5566 | |
| 5567 DEFVAR_LISP ("temp-buffer-show-function", &Vtemp_buffer_show_function /* | |
| 5568 Non-nil means call as function to display a help buffer. | |
| 5569 The function is called with one argument, the buffer to be displayed. | |
| 5570 Used by `with-output-to-temp-buffer'. | |
| 5571 If this function is used, then it must do the entire job of showing | |
| 5572 the buffer; `temp-buffer-show-hook' is not run unless this function runs it. | |
| 442 | 5573 \(`temp-buffer-show-hook' is obsolete. Do not use in new code.) |
| 428 | 5574 */ ); |
| 5575 Vtemp_buffer_show_function = Qnil; | |
| 5576 | |
| 5577 DEFVAR_LISP ("minibuffer-scroll-window", &Vminibuffer_scroll_window /* | |
| 5578 Non-nil means it is the window that \\<minibuffer-local-map>\\[scroll-other-window] in minibuffer should scroll. | |
| 5579 */ ); | |
| 5580 Vminibuffer_scroll_window = Qnil; | |
| 5581 | |
| 5582 DEFVAR_LISP ("other-window-scroll-buffer", &Vother_window_scroll_buffer /* | |
| 5583 If non-nil, this is a buffer and \\[scroll-other-window] should scroll its window. | |
| 5584 */ ); | |
| 5585 Vother_window_scroll_buffer = Qnil; | |
| 5586 | |
| 5587 DEFVAR_LISP ("window-pixel-scroll-increment", &Vwindow_pixel_scroll_increment /* | |
| 5588 *Number of pixels to scroll by per requested line. | |
| 5589 If nil then normal line scrolling occurs regardless of line height. | |
| 5590 If t then scrolling is done in increments equal to the height of the default face. | |
| 5591 */ ); | |
| 5592 Vwindow_pixel_scroll_increment = Qt; | |
| 5593 | |
| 5594 DEFVAR_INT ("next-screen-context-lines", &next_screen_context_lines /* | |
| 5595 *Number of lines of continuity when scrolling by screenfuls. | |
| 5596 */ ); | |
| 5597 next_screen_context_lines = 2; | |
| 5598 | |
| 5599 DEFVAR_INT ("window-min-height", &window_min_height /* | |
| 5600 *Delete any window less than this tall (including its modeline). | |
| 5601 */ ); | |
| 5602 window_min_height = 4; | |
| 5603 | |
| 5604 DEFVAR_INT ("window-min-width", &window_min_width /* | |
| 5605 *Delete any window less than this wide. | |
| 5606 */ ); | |
| 5607 window_min_width = 10; | |
| 5608 } | |
| 5609 | |
| 5610 void | |
| 5611 specifier_vars_of_window (void) | |
| 5612 { | |
| 5613 DEFVAR_SPECIFIER ("modeline-shadow-thickness", &Vmodeline_shadow_thickness /* | |
| 5614 *How thick to draw 3D shadows around modelines. | |
| 5615 If this is set to 0, modelines will be the traditional 2D. Sizes above | |
| 5616 10 will be accepted but the maximum thickness that will be drawn is 10. | |
| 5617 This is a specifier; use `set-specifier' to change it. | |
| 5618 */ ); | |
| 5619 Vmodeline_shadow_thickness = Fmake_specifier (Qinteger); | |
| 5620 /* The initial value for modeline-shadow-thickness is 2, but if the | |
| 5621 user removes all specifications we provide a fallback value of 0, | |
| 5622 which is probably what was expected. */ | |
| 5623 set_specifier_fallback (Vmodeline_shadow_thickness, | |
| 5624 list1 (Fcons (Qnil, Qzero))); | |
| 5625 Fadd_spec_to_specifier (Vmodeline_shadow_thickness, make_int (2), | |
| 5626 Qnil, Qnil, Qnil); | |
| 5627 set_specifier_caching (Vmodeline_shadow_thickness, | |
| 438 | 5628 offsetof (struct window, modeline_shadow_thickness), |
| 428 | 5629 modeline_shadow_thickness_changed, |
| 444 | 5630 0, 0, 0); |
| 428 | 5631 |
| 5632 DEFVAR_SPECIFIER ("has-modeline-p", &Vhas_modeline_p /* | |
| 5633 *Whether the modeline should be displayed. | |
| 5634 This is a specifier; use `set-specifier' to change it. | |
| 5635 */ ); | |
| 5636 Vhas_modeline_p = Fmake_specifier (Qboolean); | |
| 5637 set_specifier_fallback (Vhas_modeline_p, | |
| 5638 list1 (Fcons (Qnil, Qt))); | |
| 5639 set_specifier_caching (Vhas_modeline_p, | |
| 438 | 5640 offsetof (struct window, has_modeline_p), |
| 428 | 5641 /* #### It's strange that we need a special |
| 5642 flag to indicate that the shadow-thickness | |
| 5643 has changed, but not one to indicate that | |
| 5644 the modeline has been turned off or on. */ | |
| 5645 some_window_value_changed, | |
| 444 | 5646 0, 0, 0); |
| 428 | 5647 |
| 5648 DEFVAR_SPECIFIER ("vertical-divider-always-visible-p", | |
| 5649 &Vvertical_divider_always_visible_p /* | |
| 5650 *Should XEmacs always display vertical dividers between windows. | |
| 5651 | |
| 5652 When this is non-nil, vertical dividers are always shown, and are | |
| 5653 draggable. When it is nil, vertical dividers are shown only when | |
| 5654 there are no scrollbars in between windows, and are not draggable. | |
| 5655 | |
| 5656 This is a specifier; use `set-specifier' to change it. | |
| 5657 */ ); | |
| 5658 Vvertical_divider_always_visible_p = Fmake_specifier (Qboolean); | |
| 5659 set_specifier_fallback (Vvertical_divider_always_visible_p, | |
| 5660 list1 (Fcons (Qnil, Qt))); | |
| 5661 set_specifier_caching (Vvertical_divider_always_visible_p, | |
| 438 | 5662 offsetof (struct window, |
| 5663 vertical_divider_always_visible_p), | |
| 428 | 5664 vertical_divider_changed_in_window, |
| 444 | 5665 0, 0, 0); |
| 428 | 5666 |
| 5667 DEFVAR_SPECIFIER ("vertical-divider-shadow-thickness", &Vvertical_divider_shadow_thickness /* | |
| 5668 *How thick to draw 3D shadows around vertical dividers. | |
| 5669 This is a specifier; use `set-specifier' to change it. | |
| 5670 */ ); | |
| 5671 Vvertical_divider_shadow_thickness = Fmake_specifier (Qinteger); | |
| 5672 set_specifier_fallback (Vvertical_divider_shadow_thickness, | |
| 5673 list1 (Fcons (Qnil, Qzero))); | |
| 5674 Fadd_spec_to_specifier (Vvertical_divider_shadow_thickness, make_int (2), | |
| 5675 Qnil, Qnil, Qnil); | |
| 5676 set_specifier_caching (Vvertical_divider_shadow_thickness, | |
| 438 | 5677 offsetof (struct window, |
| 5678 vertical_divider_shadow_thickness), | |
| 428 | 5679 vertical_divider_changed_in_window, |
| 444 | 5680 0, 0, 0); |
| 428 | 5681 DEFVAR_SPECIFIER ("vertical-divider-line-width", &Vvertical_divider_line_width /* |
| 5682 *The width of the vertical dividers, not including shadows. | |
| 5683 | |
| 5684 For TTY windows, divider line is always one character wide. When | |
| 5685 instance of this specifier is zero in a TTY window, no divider is | |
| 5686 drawn at all between windows. When non-zero, a one character wide | |
| 5687 divider is displayed. | |
| 5688 | |
| 5689 This is a specifier; use `set-specifier' to change it. | |
| 5690 */ ); | |
| 5691 | |
| 5692 Vvertical_divider_line_width = Fmake_specifier (Qnatnum); | |
| 5693 { | |
| 5694 Lisp_Object fb = Qnil; | |
| 5695 #ifdef HAVE_TTY | |
| 5696 fb = Fcons (Fcons (list1 (Qtty), make_int (1)), fb); | |
| 5697 #endif | |
| 462 | 5698 #ifdef HAVE_GTK |
| 5699 fb = Fcons (Fcons (list1 (Qgtk), make_int (3)), fb); | |
| 5700 #endif | |
| 428 | 5701 #ifdef HAVE_X_WINDOWS |
| 5702 fb = Fcons (Fcons (list1 (Qx), make_int (3)), fb); | |
| 5703 #endif | |
| 5704 #ifdef HAVE_MS_WINDOWS | |
| 5705 /* #### This should be made magic and made to obey system settings */ | |
| 5706 fb = Fcons (Fcons (list1 (Qmswindows), make_int (3)), fb); | |
| 5707 #endif | |
| 5708 set_specifier_fallback (Vvertical_divider_line_width, fb); | |
| 5709 } | |
| 5710 set_specifier_caching (Vvertical_divider_line_width, | |
| 438 | 5711 offsetof (struct window, |
| 5712 vertical_divider_line_width), | |
| 428 | 5713 vertical_divider_changed_in_window, |
| 444 | 5714 0, 0, 0); |
| 428 | 5715 |
| 5716 DEFVAR_SPECIFIER ("vertical-divider-spacing", &Vvertical_divider_spacing /* | |
| 5717 *How much space to leave around the vertical dividers. | |
| 5718 | |
| 5719 In TTY windows, spacing is always zero, and the value of this | |
| 5720 specifier is ignored. | |
| 5721 | |
| 5722 This is a specifier; use `set-specifier' to change it. | |
| 5723 */ ); | |
| 5724 Vvertical_divider_spacing = Fmake_specifier (Qnatnum); | |
| 5725 { | |
| 5726 Lisp_Object fb = Qnil; | |
| 5727 #ifdef HAVE_TTY | |
| 5728 fb = Fcons (Fcons (list1 (Qtty), Qzero), fb); | |
| 5729 #endif | |
| 5730 #ifdef HAVE_X_WINDOWS | |
| 5731 /* #### 3D dividers look great on MS Windows with spacing = 0. | |
| 5732 Should not the same value be the fallback under X? - kkm */ | |
| 5733 fb = Fcons (Fcons (list1 (Qx), make_int (2)), fb); | |
| 5734 #endif | |
| 462 | 5735 #ifdef HAVE_GTK |
| 5736 fb = Fcons (Fcons (list1 (Qgtk), Qzero), fb); | |
| 5737 #endif | |
| 428 | 5738 #ifdef HAVE_MS_WINDOWS |
| 5739 fb = Fcons (Fcons (list1 (Qmswindows), Qzero), fb); | |
| 5740 #endif | |
| 5741 set_specifier_fallback (Vvertical_divider_spacing, fb); | |
| 5742 } | |
| 5743 set_specifier_caching (Vvertical_divider_spacing, | |
| 438 | 5744 offsetof (struct window, vertical_divider_spacing), |
| 428 | 5745 vertical_divider_changed_in_window, |
| 444 | 5746 0, 0, 0); |
| 5747 } |