Mercurial > hg > xemacs-beta
annotate src/scrollbar.c @ 5118:e0db3c197671 ben-lisp-object
merge up to latest default branch, doesn't compile yet
| author | Ben Wing <ben@xemacs.org> |
|---|---|
| date | Sat, 26 Dec 2009 21:18:49 -0600 |
| parents | 3742ea8250b5 |
| children | d1247f3cc363 |
| rev | line source |
|---|---|
| 428 | 1 /* Generic scrollbar implementation. |
| 2 Copyright (C) 1994, 1995 Board of Trustees, University of Illinois. | |
| 3 Copyright (C) 1995 Free Software Foundation, Inc. | |
| 4 Copyright (C) 1995 Sun Microsystems, Inc. | |
| 5 Copyright (C) 1995 Darrell Kindred <dkindred+@cmu.edu>. | |
| 1318 | 6 Copyright (C) 2003 Ben Wing. |
| 428 | 7 |
| 8 This file is part of XEmacs. | |
| 9 | |
| 10 XEmacs is free software; you can redistribute it and/or modify it | |
| 11 under the terms of the GNU General Public License as published by the | |
| 12 Free Software Foundation; either version 2, or (at your option) any | |
| 13 later version. | |
| 14 | |
| 15 XEmacs is distributed in the hope that it will be useful, but WITHOUT | |
| 16 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 17 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 18 for more details. | |
| 19 | |
| 20 You should have received a copy of the GNU General Public License | |
| 21 along with XEmacs; see the file COPYING. If not, write to | |
| 22 the Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
| 23 Boston, MA 02111-1307, USA. */ | |
| 24 | |
| 25 /* Synched up with: Not in FSF. */ | |
| 26 | |
| 27 /* This file has been Mule-ized. */ | |
| 28 | |
| 29 #include <config.h> | |
| 30 #include "lisp.h" | |
| 31 | |
| 32 #include "buffer.h" | |
| 33 #include "commands.h" | |
| 34 #include "scrollbar.h" | |
| 872 | 35 #include "device-impl.h" |
| 36 #include "frame-impl.h" | |
| 428 | 37 #include "glyphs.h" |
| 38 #include "gutter.h" | |
| 39 #include "window.h" | |
| 40 | |
| 41 Lisp_Object Qinit_scrollbar_from_resources; | |
| 42 | |
| 43 Lisp_Object Qscrollbar_line_up; | |
| 44 Lisp_Object Qscrollbar_line_down; | |
| 45 Lisp_Object Qscrollbar_page_up; | |
| 46 Lisp_Object Qscrollbar_page_down; | |
| 47 Lisp_Object Qscrollbar_to_top; | |
| 48 Lisp_Object Qscrollbar_to_bottom; | |
| 49 Lisp_Object Qscrollbar_vertical_drag; | |
| 50 | |
| 51 Lisp_Object Qscrollbar_char_left; | |
| 52 Lisp_Object Qscrollbar_char_right; | |
| 53 Lisp_Object Qscrollbar_page_left; | |
| 54 Lisp_Object Qscrollbar_page_right; | |
| 55 Lisp_Object Qscrollbar_to_left; | |
| 56 Lisp_Object Qscrollbar_to_right; | |
| 57 Lisp_Object Qscrollbar_horizontal_drag; | |
| 58 | |
| 59 #define DEFAULT_SCROLLBAR_WIDTH 15 | |
| 60 #define DEFAULT_SCROLLBAR_HEIGHT 15 | |
| 61 | |
| 62 /* Width and height of the scrollbar. */ | |
| 63 Lisp_Object Vscrollbar_width; | |
| 64 Lisp_Object Vscrollbar_height; | |
| 65 | |
| 66 /* Scrollbar visibility specifiers */ | |
| 67 Lisp_Object Vhorizontal_scrollbar_visible_p; | |
| 68 Lisp_Object Vvertical_scrollbar_visible_p; | |
| 69 | |
| 70 /* Scrollbar location specifiers */ | |
| 71 Lisp_Object Vscrollbar_on_left_p; | |
| 72 Lisp_Object Vscrollbar_on_top_p; | |
| 73 | |
| 74 Lisp_Object Vscrollbar_pointer_glyph; | |
| 75 | |
| 76 EXFUN (Fcenter_to_window_line, 2); | |
| 77 | |
| 78 static void update_scrollbar_instance (struct window *w, int vertical, | |
| 79 struct scrollbar_instance *instance); | |
| 80 | |
| 1204 | 81 static const struct memory_description scrollbar_instance_description [] = { |
| 934 | 82 { XD_LISP_OBJECT, offsetof (struct scrollbar_instance, mirror) }, |
| 83 { XD_LISP_OBJECT, offsetof (struct scrollbar_instance, next) }, | |
| 84 { XD_END } | |
| 85 }; | |
| 86 | |
| 428 | 87 |
| 617 | 88 static Lisp_Object |
| 89 mark_scrollbar_instance (Lisp_Object obj) | |
| 90 { | |
| 91 struct scrollbar_instance *data = XSCROLLBAR_INSTANCE (obj); | |
| 92 mark_object (wrap_window_mirror (data->mirror)); | |
| 93 if (data->next) | |
| 94 return wrap_scrollbar_instance (data->next); | |
| 95 else | |
| 96 return Qnil; | |
| 97 } | |
| 98 | |
|
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99 DEFINE_NODUMP_LISP_OBJECT ("scrollbar-instance", scrollbar_instance, |
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100 mark_scrollbar_instance, |
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101 0, 0, 0, 0, |
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102 scrollbar_instance_description, |
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103 struct scrollbar_instance); |
| 617 | 104 |
| 428 | 105 static void |
| 106 free_scrollbar_instance (struct scrollbar_instance *instance, | |
| 107 struct frame *frame) | |
| 108 { | |
| 109 if (!instance) | |
| 110 return; | |
| 111 else | |
| 112 { | |
| 113 struct device *d = XDEVICE (frame->device); | |
| 114 | |
| 115 MAYBE_DEVMETH (d, free_scrollbar_instance, (instance)); | |
| 617 | 116 /* not worth calling free_managed_lcrecord() -- scrollbar instances |
| 117 are not created that frequently and it's dangerous. */ | |
| 428 | 118 } |
| 119 } | |
| 120 | |
| 121 static void | |
| 122 free_window_mirror_scrollbars (struct window_mirror *mir) | |
| 123 { | |
| 124 free_scrollbar_instance (mir->scrollbar_vertical_instance, mir->frame); | |
| 125 mir->scrollbar_vertical_instance = 0; | |
| 126 | |
| 127 free_scrollbar_instance (mir->scrollbar_horizontal_instance, mir->frame); | |
| 128 mir->scrollbar_horizontal_instance = 0; | |
| 129 } | |
| 130 | |
| 131 static struct window_mirror * | |
| 132 free_scrollbars_loop (Lisp_Object window, struct window_mirror *mir) | |
| 133 { | |
| 134 struct window_mirror *retval = NULL; | |
| 135 | |
| 136 while (mir) | |
| 137 { | |
| 138 assert (!NILP (window)); | |
| 139 | |
| 140 if (mir->vchild) | |
| 141 { | |
| 142 retval = free_scrollbars_loop (XWINDOW (window)->vchild, | |
| 143 mir->vchild); | |
| 144 } | |
| 145 else if (mir->hchild) | |
| 146 { | |
| 147 retval = free_scrollbars_loop (XWINDOW (window)->hchild, | |
| 148 mir->hchild); | |
| 149 } | |
| 150 | |
| 151 if (retval != NULL) | |
| 152 return retval; | |
| 153 | |
| 154 if (mir->scrollbar_vertical_instance || | |
| 155 mir->scrollbar_horizontal_instance) | |
| 156 free_window_mirror_scrollbars (mir); | |
| 157 | |
| 158 mir = mir->next; | |
| 159 window = XWINDOW (window)->next; | |
| 160 } | |
| 161 | |
| 162 return NULL; | |
| 163 } | |
| 164 | |
| 165 /* Destroy all scrollbars associated with FRAME. Only called from | |
| 166 delete_frame_internal. */ | |
| 167 void | |
| 168 free_frame_scrollbars (struct frame *f) | |
| 169 { | |
| 170 if (!HAS_FRAMEMETH_P (f, create_scrollbar_instance)) | |
| 171 return; | |
| 172 | |
| 173 if (f->mirror_dirty) | |
| 174 update_frame_window_mirror (f); | |
| 175 | |
| 617 | 176 free_scrollbars_loop (f->root_window, XWINDOW_MIRROR (f->root_mirror)); |
| 428 | 177 |
| 178 while (FRAME_SB_VCACHE (f)) | |
| 179 { | |
| 180 struct scrollbar_instance *tofree = FRAME_SB_VCACHE (f); | |
| 181 FRAME_SB_VCACHE (f) = FRAME_SB_VCACHE (f)->next; | |
| 182 tofree->next = NULL; | |
| 183 free_scrollbar_instance (tofree, f); | |
| 184 } | |
| 185 | |
| 186 while (FRAME_SB_HCACHE (f)) | |
| 187 { | |
| 188 struct scrollbar_instance *tofree = FRAME_SB_HCACHE (f); | |
| 189 FRAME_SB_HCACHE (f) = FRAME_SB_HCACHE (f)->next; | |
| 190 tofree->next = NULL; | |
| 191 free_scrollbar_instance (tofree, f); | |
| 192 } | |
| 193 } | |
| 194 | |
| 195 | |
| 196 static struct scrollbar_instance * | |
| 197 create_scrollbar_instance (struct frame *f, int vertical) | |
| 198 { | |
| 199 struct device *d = XDEVICE (f->device); | |
|
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200 Lisp_Object obj = ALLOC_LISP_OBJECT (scrollbar_instance); |
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201 struct scrollbar_instance *instance = XSCROLLBAR_INSTANCE (obj); |
| 428 | 202 |
| 203 MAYBE_DEVMETH (d, create_scrollbar_instance, (f, vertical, instance)); | |
| 204 | |
| 205 return instance; | |
| 206 } | |
| 207 | |
| 208 | |
| 209 #define GET_SCROLLBAR_INSTANCE_INTERNAL(cache) \ | |
| 210 do { \ | |
| 211 if (FRAME_SB_##cache (f)) \ | |
| 212 { \ | |
| 213 struct scrollbar_instance *retval = FRAME_SB_##cache (f); \ | |
| 214 FRAME_SB_##cache (f) = FRAME_SB_##cache (f)->next; \ | |
| 215 retval->next = NULL; \ | |
| 216 return retval; \ | |
| 217 } \ | |
| 218 } while (0) | |
| 219 | |
| 220 static struct scrollbar_instance * | |
| 221 get_scrollbar_instance (struct frame *f, int vertical) | |
| 222 { | |
| 223 /* Check if there are any available scrollbars already in existence. */ | |
| 224 if (vertical) | |
| 225 GET_SCROLLBAR_INSTANCE_INTERNAL (VCACHE); | |
| 226 else | |
| 227 GET_SCROLLBAR_INSTANCE_INTERNAL (HCACHE); | |
| 228 | |
| 229 return create_scrollbar_instance (f, vertical); | |
| 230 } | |
| 231 #undef GET_SCROLLBAR_INSTANCE_INTERNAL | |
| 232 | |
| 233 #define RELEASE_SCROLLBAR_INSTANCE_INTERNAL(cache) \ | |
| 234 do { \ | |
| 235 if (!FRAME_SB_##cache (f)) \ | |
| 236 { \ | |
| 237 instance->next = NULL; \ | |
| 238 FRAME_SB_##cache (f) = instance; \ | |
| 239 } \ | |
| 240 else \ | |
| 241 { \ | |
| 242 instance->next = FRAME_SB_##cache (f); \ | |
| 243 FRAME_SB_##cache (f) = instance; \ | |
| 244 } \ | |
| 245 } while (0) | |
| 246 | |
| 247 static void | |
| 248 release_scrollbar_instance (struct frame *f, int vertical, | |
| 249 struct scrollbar_instance *instance) | |
| 250 { | |
| 251 /* #### should we do "instance->mir = 0;" for safety? */ | |
| 252 if (vertical) | |
| 253 RELEASE_SCROLLBAR_INSTANCE_INTERNAL (VCACHE); | |
| 254 else | |
| 255 RELEASE_SCROLLBAR_INSTANCE_INTERNAL (HCACHE); | |
| 256 } | |
| 257 #undef RELEASE_SCROLLBAR_INSTANCE_INTERNAL | |
| 258 | |
| 259 #ifdef MEMORY_USAGE_STATS | |
| 260 | |
| 261 int | |
| 262 compute_scrollbar_instance_usage (struct device *d, | |
| 263 struct scrollbar_instance *inst, | |
| 264 struct overhead_stats *ovstats) | |
| 265 { | |
| 266 int total = 0; | |
| 267 | |
| 2469 | 268 if (HAS_DEVMETH_P(d, compute_scrollbar_instance_usage)) |
| 269 total += DEVMETH (d, compute_scrollbar_instance_usage, (d, inst, ovstats)); | |
| 428 | 270 |
| 271 while (inst) | |
| 272 { | |
| 3024 | 273 total += LISPOBJ_STORAGE_SIZE (inst, sizeof (*inst), ovstats); |
| 428 | 274 inst = inst->next; |
| 275 } | |
| 276 | |
| 277 return total; | |
| 278 } | |
| 279 | |
| 280 #endif /* MEMORY_USAGE_STATS */ | |
| 281 | |
| 282 void | |
| 283 update_window_scrollbars (struct window *w, struct window_mirror *mirror, | |
| 284 int active, int horiz_only) | |
| 285 { | |
| 286 struct frame *f = XFRAME (w->frame); | |
| 287 struct device *d = XDEVICE (f->device); | |
| 1318 | 288 int depth; |
| 428 | 289 |
| 290 if (!HAS_DEVMETH_P (d, create_scrollbar_instance)) | |
| 291 return; | |
| 292 | |
| 1318 | 293 depth = enter_redisplay_critical_section_maybe (); |
| 428 | 294 |
| 295 /* It is possible for this to get called from the mirror update | |
| 296 routines. In that case the structure is in an indeterminate | |
| 297 state but we know exactly what struct we are working with. So we | |
| 298 pass it in in that case. We also take advantage of it at some | |
| 299 other points where we know what the mirror struct is. */ | |
| 300 if (!mirror) | |
| 301 mirror = find_window_mirror (w); | |
| 302 | |
| 303 if (!mirror->scrollbar_vertical_instance && active) | |
| 304 mirror->scrollbar_vertical_instance = get_scrollbar_instance (f, 1); | |
| 305 | |
| 306 if (!mirror->scrollbar_horizontal_instance && active) | |
| 307 mirror->scrollbar_horizontal_instance = get_scrollbar_instance (f, 0); | |
| 308 | |
| 309 if (!horiz_only && mirror->scrollbar_vertical_instance) | |
| 310 { | |
| 311 int size = (active ? window_scrollbar_width (w) : 0); | |
| 312 struct scrollbar_instance *instance; | |
| 313 | |
| 314 instance = mirror->scrollbar_vertical_instance; | |
| 315 instance->scrollbar_is_active = active; | |
| 316 instance->mirror = mirror; | |
| 317 | |
| 318 if (active && size) | |
| 319 update_scrollbar_instance (w, 1, instance); | |
| 320 MAYBE_DEVMETH (d, update_scrollbar_instance_status, | |
| 321 (w, active, size, instance)); | |
| 322 | |
| 323 if (!active) | |
| 324 { | |
| 325 release_scrollbar_instance (f, 1, instance); | |
| 326 mirror->scrollbar_vertical_instance = NULL; | |
| 327 } | |
| 328 } | |
| 329 | |
| 330 if (mirror->scrollbar_horizontal_instance) | |
| 331 { | |
| 332 int size = (active ? window_scrollbar_height (w) : 0); | |
| 333 struct scrollbar_instance *instance; | |
| 334 | |
| 335 instance = mirror->scrollbar_horizontal_instance; | |
| 336 instance->scrollbar_is_active = active; | |
| 337 instance->mirror = mirror; | |
| 338 | |
| 339 if (active && size) | |
| 340 update_scrollbar_instance (w, 0, instance); | |
| 341 MAYBE_DEVMETH (d, update_scrollbar_instance_status, | |
| 342 (w, active, size, instance)); | |
| 343 | |
| 344 if (!active) | |
| 345 { | |
| 346 release_scrollbar_instance (f, 0, instance); | |
| 347 mirror->scrollbar_horizontal_instance = NULL; | |
| 348 } | |
| 349 } | |
| 350 | |
| 1318 | 351 exit_redisplay_critical_section_maybe (depth); |
| 428 | 352 } |
| 353 | |
| 354 void | |
| 355 release_window_mirror_scrollbars (struct window_mirror *mir) | |
| 356 { | |
| 357 struct device *d = XDEVICE (mir->frame->device); | |
| 358 | |
| 359 if (!HAS_DEVMETH_P (d, create_scrollbar_instance)) | |
| 360 return; | |
| 361 | |
| 362 if (mir->scrollbar_vertical_instance) | |
| 363 { | |
| 364 release_scrollbar_instance (mir->frame, 1, | |
| 365 mir->scrollbar_vertical_instance); | |
| 366 MAYBE_DEVMETH (d, release_scrollbar_instance, | |
| 367 (mir->scrollbar_vertical_instance)); | |
| 368 } | |
| 369 mir->scrollbar_vertical_instance = 0; | |
| 370 | |
| 371 if (mir->scrollbar_horizontal_instance) | |
| 372 { | |
| 373 release_scrollbar_instance (mir->frame, 0, | |
| 374 mir->scrollbar_horizontal_instance); | |
| 375 MAYBE_DEVMETH (d, release_scrollbar_instance, | |
| 376 (mir->scrollbar_horizontal_instance)); | |
| 377 } | |
| 378 mir->scrollbar_horizontal_instance = 0; | |
| 379 } | |
| 380 | |
| 381 /* | |
| 382 * If w->sb_point is on the top line then return w->sb_point else | |
| 383 * return w->start. If flag, then return beginning point of line | |
| 384 * which w->sb_point lies on. | |
| 385 */ | |
| 665 | 386 static Charbpos |
| 428 | 387 scrollbar_point (struct window *w, int flag) |
| 388 { | |
| 665 | 389 Charbpos start_pos, end_pos, sb_pos; |
| 428 | 390 Lisp_Object buf; |
| 391 struct buffer *b; | |
| 392 | |
| 393 if (NILP (w->buffer)) /* non-leaf window */ | |
| 394 return 0; | |
| 395 | |
| 396 start_pos = marker_position (w->start[CURRENT_DISP]); | |
| 397 sb_pos = marker_position (w->sb_point); | |
| 398 | |
| 399 if (!flag && sb_pos < start_pos) | |
| 400 return start_pos; | |
| 401 | |
| 402 buf = get_buffer (w->buffer, 0); | |
| 403 if (!NILP (buf)) | |
| 404 b = XBUFFER (buf); | |
| 405 else | |
| 406 return start_pos; | |
| 407 | |
| 408 if (flag) | |
| 409 end_pos = find_next_newline_no_quit (b, sb_pos, -1); | |
| 410 else | |
| 411 end_pos = find_next_newline_no_quit (b, start_pos, 1); | |
| 412 | |
| 413 if (flag) | |
| 414 return end_pos; | |
| 415 else if (sb_pos > end_pos) | |
| 416 return start_pos; | |
| 417 else | |
| 418 return sb_pos; | |
| 419 } | |
| 420 | |
| 421 /* | |
| 422 * Update a window's horizontal or vertical scrollbar. | |
| 423 */ | |
| 424 static void | |
| 425 update_scrollbar_instance (struct window *w, int vertical, | |
| 426 struct scrollbar_instance *instance) | |
| 427 { | |
| 428 struct frame *f = XFRAME (w->frame); | |
| 429 struct device *d = XDEVICE (f->device); | |
| 430 struct buffer *b = XBUFFER (w->buffer); | |
| 665 | 431 Charbpos start_pos, end_pos, sb_pos; |
| 428 | 432 int scrollbar_width = window_scrollbar_width (w); |
| 433 int scrollbar_height = window_scrollbar_height (w); | |
| 434 | |
| 435 int new_line_increment = -1, new_page_increment = -1; | |
| 436 int new_minimum = -1, new_maximum = -1; | |
| 437 int new_slider_size = -1, new_slider_position = -1; | |
| 438 int new_width = -1, new_height = -1, new_x = -1, new_y = -1; | |
| 2286 | 439 #if 0 |
| 444 | 440 struct window *new_window = 0; /* #### currently unused */ |
| 2286 | 441 #endif |
| 428 | 442 |
| 443 end_pos = BUF_Z (b) - w->window_end_pos[CURRENT_DISP]; | |
| 444 sb_pos = scrollbar_point (w, 0); | |
| 445 start_pos = sb_pos; | |
| 446 | |
| 447 /* The end position must be strictly greater than the start | |
| 448 position, at least for the Motify scrollbar. It shouldn't hurt | |
| 449 anything for other scrollbar implementations. */ | |
| 450 if (end_pos <= start_pos) | |
| 451 end_pos = start_pos + 1; | |
| 452 | |
| 453 if (vertical) | |
| 454 { | |
| 455 new_height = WINDOW_TEXT_HEIGHT (w); | |
| 456 new_width = scrollbar_width; | |
| 457 } | |
| 458 else | |
| 459 { | |
| 460 new_height = scrollbar_height; | |
| 461 new_width = WINDOW_TEXT_WIDTH (w); | |
| 462 } | |
| 463 | |
| 464 /* If the height and width are not greater than 0, then later on the | |
| 465 Motif widgets will bitch and moan. */ | |
| 466 if (new_height <= 0) | |
| 467 new_height = 1; | |
| 468 if (new_width <= 0) | |
| 469 new_width = 1; | |
| 470 | |
| 471 assert (instance->mirror && XWINDOW (real_window(instance->mirror, 0)) == w); | |
| 472 | |
| 473 /* Only character-based scrollbars are implemented at the moment. | |
| 474 Line-based will be implemented in the future. */ | |
| 475 | |
| 476 instance->scrollbar_is_active = 1; | |
| 477 new_line_increment = 1; | |
| 478 new_page_increment = 1; | |
| 479 | |
| 480 /* We used to check for inhibit_scrollbar_slider_size_change here, | |
| 481 but that seems bogus. */ | |
| 482 { | |
| 483 int x_offset, y_offset; | |
| 484 | |
| 485 /* Scrollbars are always the farthest from the text area, barring | |
| 486 gutters. */ | |
| 487 if (vertical) | |
| 488 { | |
| 489 if (!NILP (w->scrollbar_on_left_p)) | |
| 490 { | |
| 491 x_offset = WINDOW_LEFT (w); | |
| 492 } | |
| 442 | 493 else |
| 428 | 494 { |
| 495 x_offset = WINDOW_RIGHT (w) - scrollbar_width; | |
| 496 if (window_needs_vertical_divider (w)) | |
| 497 x_offset -= window_divider_width (w); | |
| 498 } | |
| 499 y_offset = WINDOW_TEXT_TOP (w) + f->scrollbar_y_offset; | |
| 500 } | |
| 501 else | |
| 502 { | |
| 503 x_offset = WINDOW_TEXT_LEFT (w); | |
| 504 y_offset = f->scrollbar_y_offset; | |
| 505 | |
| 506 if (!NILP (w->scrollbar_on_top_p)) | |
| 507 { | |
| 508 y_offset += WINDOW_TOP (w); | |
| 509 } | |
| 510 else | |
| 511 { | |
| 512 y_offset += WINDOW_TEXT_BOTTOM (w); | |
| 513 } | |
| 514 } | |
| 515 | |
| 516 new_x = x_offset; | |
| 517 new_y = y_offset; | |
| 518 } | |
| 519 | |
| 520 /* A disabled scrollbar has its slider sized to the entire height of | |
| 521 the scrollbar. Currently the minibuffer scrollbar is | |
| 522 disabled. */ | |
| 523 if (!MINI_WINDOW_P (w) && vertical) | |
| 524 { | |
| 525 if (!DEVMETH_OR_GIVEN (d, inhibit_scrollbar_slider_size_change, (), 0)) | |
| 526 { | |
| 527 new_minimum = BUF_BEGV (b); | |
| 528 new_maximum = max (BUF_ZV (b), new_minimum + 1); | |
| 529 new_slider_size = min ((end_pos - start_pos), | |
| 530 (new_maximum - new_minimum)); | |
| 531 new_slider_position = sb_pos; | |
| 2286 | 532 #if 0 |
| 428 | 533 new_window = w; |
| 2286 | 534 #endif |
| 428 | 535 } |
| 536 } | |
| 537 else if (!MINI_WINDOW_P (w)) | |
| 538 { | |
| 539 /* The minus one is to account for the truncation glyph. */ | |
| 540 int wcw = window_char_width (w, 0) - 1; | |
| 541 int max_width, max_slide; | |
| 542 | |
| 543 if (w->max_line_len < wcw) | |
| 544 { | |
| 545 max_width = 1; | |
| 546 max_slide = 1; | |
| 547 wcw = 1; | |
| 548 } | |
| 549 else | |
| 550 { | |
| 551 max_width = w->max_line_len + 2; | |
| 552 max_slide = max_width - wcw; | |
| 553 } | |
| 554 | |
| 555 new_minimum = 0; | |
| 556 new_maximum = max_width; | |
| 557 new_slider_size = wcw; | |
| 558 new_slider_position = min (w->hscroll, max_slide); | |
| 559 } | |
| 560 else /* MINI_WINDOW_P (w) */ | |
| 561 { | |
| 562 new_minimum = 1; | |
| 563 new_maximum = 2; | |
| 564 new_slider_size = 1; | |
| 565 new_slider_position = 1; | |
| 566 instance->scrollbar_is_active = 0; | |
| 567 } | |
| 568 | |
| 569 DEVMETH (d, update_scrollbar_instance_values, (w, instance, | |
| 570 new_line_increment, | |
| 571 new_page_increment, | |
| 572 new_minimum, | |
| 573 new_maximum, | |
| 574 new_slider_size, | |
| 575 new_slider_position, | |
| 576 new_width, new_height, | |
| 577 new_x, new_y)); | |
| 578 } | |
| 579 | |
| 580 void | |
| 581 init_frame_scrollbars (struct frame *f) | |
| 582 { | |
| 583 struct device *d = XDEVICE (f->device); | |
| 584 | |
| 585 if (HAS_DEVMETH_P (d, create_scrollbar_instance)) | |
| 586 { | |
| 587 int depth = unlock_ghost_specifiers_protected (); | |
| 793 | 588 Lisp_Object frame = wrap_frame (f); |
| 589 | |
| 428 | 590 call_critical_lisp_code (XDEVICE (FRAME_DEVICE (f)), |
| 591 Qinit_scrollbar_from_resources, | |
| 592 frame); | |
| 771 | 593 unbind_to (depth); |
| 428 | 594 } |
| 595 } | |
| 596 | |
| 597 void | |
| 598 init_device_scrollbars (struct device *d) | |
| 599 { | |
| 600 if (HAS_DEVMETH_P (d, create_scrollbar_instance)) | |
| 601 { | |
| 602 int depth = unlock_ghost_specifiers_protected (); | |
| 793 | 603 Lisp_Object device = wrap_device (d); |
| 604 | |
| 428 | 605 call_critical_lisp_code (d, |
| 606 Qinit_scrollbar_from_resources, | |
| 607 device); | |
| 771 | 608 unbind_to (depth); |
| 428 | 609 } |
| 610 } | |
| 611 | |
| 612 void | |
| 613 init_global_scrollbars (struct device *d) | |
| 614 { | |
| 615 if (HAS_DEVMETH_P (d, create_scrollbar_instance)) | |
| 616 { | |
| 617 int depth = unlock_ghost_specifiers_protected (); | |
| 618 call_critical_lisp_code (d, | |
| 619 Qinit_scrollbar_from_resources, | |
| 620 Qglobal); | |
| 771 | 621 unbind_to (depth); |
| 428 | 622 } |
| 623 } | |
| 624 | |
| 625 static void | |
| 2286 | 626 vertical_scrollbar_changed_in_window (Lisp_Object UNUSED (specifier), |
| 428 | 627 struct window *w, |
| 2286 | 628 Lisp_Object UNUSED (oldval)) |
| 428 | 629 { |
| 630 /* Hold on your cerebella guys. If we always show the dividers, | |
| 631 changing scrollbar affects only how the text and scrollbar are | |
| 632 laid out in the window. If we do not want the dividers to show up | |
| 633 always, then we mark more drastic change, because changing | |
| 634 divider appearance changes lotta things. Although we actually need | |
| 635 to do this only if the scrollbar has appeared or disappeared | |
| 636 completely at either window edge, we do this always, as users | |
| 637 usually do not reposition scrollbars 200 times a second or so. Do | |
| 638 you? */ | |
| 639 if (NILP (w->vertical_divider_always_visible_p)) | |
| 640 MARK_FRAME_WINDOWS_STRUCTURE_CHANGED (XFRAME (WINDOW_FRAME (w))); | |
| 641 else | |
| 642 MARK_WINDOWS_CHANGED (w); | |
| 643 } | |
| 644 | |
| 645 /* This function is called as a result of a change to the | |
| 646 `scrollbar-pointer' glyph. */ | |
| 647 static void | |
| 2286 | 648 scrollbar_pointer_changed_in_window (Lisp_Object UNUSED (specifier), |
| 649 struct window *w, | |
| 650 Lisp_Object UNUSED (oldval)) | |
| 428 | 651 { |
| 652 struct frame *f = XFRAME (WINDOW_FRAME (w)); | |
| 653 | |
| 654 if (f->init_finished) | |
| 655 MAYBE_FRAMEMETH (f, scrollbar_pointer_changed_in_window, (w)); | |
| 656 } | |
| 657 | |
| 658 /* #### | |
| 659 | |
| 660 All of the following stuff is functions that handle scrollbar | |
| 661 actions. All of it should be moved into Lisp. This may require | |
| 662 adding some badly-needed primitives. */ | |
| 663 | |
| 664 /********** vertical scrollbar stuff **********/ | |
| 665 | |
| 666 /* | |
| 667 * If the original point is still visible, put the cursor back there. | |
| 668 * Otherwise, when scrolling down stick it at the beginning of the | |
| 669 * first visible line and when scrolling up stick it at the beginning | |
| 670 * of the last visible line. | |
| 671 */ | |
| 672 | |
| 673 /* #### This function should be moved into Lisp */ | |
| 674 static void | |
| 675 scrollbar_reset_cursor (Lisp_Object win, Lisp_Object orig_pt) | |
| 676 { | |
| 677 /* When this function is called we know that start is already | |
| 678 accurate. We know this because either set-window-start or | |
| 679 recenter was called immediately prior to it being called. */ | |
| 680 Lisp_Object buf; | |
| 665 | 681 Charbpos start_pos = XINT (Fwindow_start (win)); |
| 682 Charbpos ptint = XINT (orig_pt); | |
| 428 | 683 struct window *w = XWINDOW (win); |
| 684 int selected = ((w == XWINDOW (Fselected_window (XFRAME (w->frame)->device))) | |
| 685 ? 1 | |
| 686 : 0); | |
| 687 | |
| 688 buf = Fwindow_buffer (win); | |
| 689 if (NILP (buf)) | |
| 690 return; /* the window was deleted out from under us */ | |
| 691 | |
| 692 if (ptint < XINT (Fwindow_start (win))) | |
| 693 { | |
| 694 if (selected) | |
| 695 Fgoto_char (make_int (start_pos), buf); | |
| 696 else | |
| 697 Fset_window_point (win, make_int (start_pos)); | |
| 698 } | |
| 1708 | 699 else if (!point_would_be_visible (XWINDOW (win), start_pos, ptint, 0)) |
| 428 | 700 { |
| 701 Fmove_to_window_line (make_int (-1), win); | |
| 702 | |
| 703 if (selected) | |
| 704 Fbeginning_of_line (Qnil, buf); | |
| 705 else | |
| 706 { | |
| 707 /* #### Taken from forward-line. */ | |
| 665 | 708 Charbpos pos; |
| 428 | 709 |
| 710 pos = find_next_newline (XBUFFER (buf), | |
| 711 marker_position (w->pointm[CURRENT_DISP]), | |
| 712 -1); | |
| 713 Fset_window_point (win, make_int (pos)); | |
| 714 } | |
| 715 } | |
| 716 else | |
| 717 { | |
| 718 if (selected) | |
| 719 Fgoto_char (orig_pt, buf); | |
| 720 else | |
| 721 Fset_window_point (win, orig_pt); | |
| 722 } | |
| 723 } | |
| 724 | |
| 725 DEFUN ("scrollbar-line-up", Fscrollbar_line_up, 1, 1, 0, /* | |
| 726 Function called when the line-up arrow on the scrollbar is clicked. | |
| 727 This is the little arrow at the top of the scrollbar. One argument, the | |
| 728 scrollbar's window. You can advise this function to change the scrollbar | |
| 729 behavior. | |
| 730 */ | |
| 731 (window)) | |
| 732 { | |
| 733 CHECK_LIVE_WINDOW (window); | |
| 734 window_scroll (window, make_int (1), -1, ERROR_ME_NOT); | |
| 735 zmacs_region_stays = 1; | |
| 736 return Qnil; | |
| 737 } | |
| 738 | |
| 739 DEFUN ("scrollbar-line-down", Fscrollbar_line_down, 1, 1, 0, /* | |
| 740 Function called when the line-down arrow on the scrollbar is clicked. | |
| 741 This is the little arrow at the bottom of the scrollbar. One argument, the | |
| 742 scrollbar's window. You can advise this function to change the scrollbar | |
| 743 behavior. | |
| 744 */ | |
| 745 (window)) | |
| 746 { | |
| 747 CHECK_LIVE_WINDOW (window); | |
| 748 window_scroll (window, make_int (1), 1, ERROR_ME_NOT); | |
| 749 zmacs_region_stays = 1; | |
| 750 return Qnil; | |
| 751 } | |
| 752 | |
| 753 DEFUN ("scrollbar-page-up", Fscrollbar_page_up, 1, 1, 0, /* | |
| 754 Function called when the user gives the "page-up" scrollbar action. | |
| 755 \(The way this is done can vary from scrollbar to scrollbar.) One argument, | |
| 756 a cons containing the scrollbar's window and a value (#### document me! | |
| 757 This value is nil for Motif/Lucid scrollbars and a number for Athena | |
| 758 scrollbars). You can advise this function to change the scrollbar | |
| 759 behavior. | |
| 760 */ | |
| 761 (object)) | |
| 762 { | |
| 763 Lisp_Object window = Fcar (object); | |
| 764 | |
| 765 CHECK_LIVE_WINDOW (window); | |
| 766 /* Motif and Athena scrollbars behave differently, but in accordance | |
| 767 with their standard behaviors. It is not possible to hide the | |
| 768 differences down in lwlib because knowledge of XEmacs buffer and | |
| 769 cursor motion routines is necessary. */ | |
| 442 | 770 |
| 771 if (NILP (XCDR (object))) | |
| 772 window_scroll (window, Qnil, -1, ERROR_ME_NOT); | |
| 773 else | |
| 774 { | |
| 665 | 775 Charbpos charbpos; |
| 442 | 776 Lisp_Object value = Fcdr (object); |
| 428 | 777 |
| 442 | 778 CHECK_INT (value); |
| 779 Fmove_to_window_line (Qzero, window); | |
| 780 /* can't use Fvertical_motion() because it moves the buffer point | |
| 781 rather than the window's point. | |
| 428 | 782 |
| 442 | 783 #### It does? Why does it take a window argument then? */ |
| 665 | 784 charbpos = vmotion (XWINDOW (window), XINT (Fwindow_point (window)), |
| 442 | 785 XINT (value), 0); |
| 665 | 786 Fset_window_point (window, make_int (charbpos)); |
| 442 | 787 Fcenter_to_window_line (Qzero, window); |
| 788 } | |
| 789 | |
| 428 | 790 zmacs_region_stays = 1; |
| 791 return Qnil; | |
| 792 } | |
| 793 | |
| 794 DEFUN ("scrollbar-page-down", Fscrollbar_page_down, 1, 1, 0, /* | |
| 795 Function called when the user gives the "page-down" scrollbar action. | |
| 796 \(The way this is done can vary from scrollbar to scrollbar.) One argument, | |
| 797 a cons containing the scrollbar's window and a value (#### document me! | |
| 798 This value is nil for Motif/Lucid scrollbars and a number for Athena | |
| 799 scrollbars). You can advise this function to change the scrollbar | |
| 800 behavior. | |
| 801 */ | |
| 802 (object)) | |
| 803 { | |
| 804 Lisp_Object window = Fcar (object); | |
| 805 | |
| 806 CHECK_LIVE_WINDOW (window); | |
| 807 /* Motif and Athena scrollbars behave differently, but in accordance | |
| 808 with their standard behaviors. It is not possible to hide the | |
| 809 differences down in lwlib because knowledge of XEmacs buffer and | |
| 810 cursor motion routines is necessary. */ | |
| 442 | 811 |
| 812 if (NILP (XCDR (object))) | |
| 813 window_scroll (window, Qnil, 1, ERROR_ME_NOT); | |
| 814 else | |
| 815 { | |
| 816 Lisp_Object value = Fcdr (object); | |
| 817 CHECK_INT (value); | |
| 818 Fmove_to_window_line (value, window); | |
| 819 Fcenter_to_window_line (Qzero, window); | |
| 820 } | |
| 821 | |
| 428 | 822 zmacs_region_stays = 1; |
| 823 return Qnil; | |
| 824 } | |
| 825 | |
| 826 DEFUN ("scrollbar-to-top", Fscrollbar_to_top, 1, 1, 0, /* | |
| 827 Function called when the user invokes the "to-top" scrollbar action. | |
| 828 The way this is done can vary from scrollbar to scrollbar, but | |
| 829 C-button1 on the up-arrow is very common. One argument, the | |
| 830 scrollbar's window. You can advise this function to change the | |
| 831 scrollbar behavior. | |
| 832 */ | |
| 833 (window)) | |
| 834 { | |
| 835 Lisp_Object orig_pt = Fwindow_point (window); | |
| 836 Fset_window_point (window, Fpoint_min (Fwindow_buffer (window))); | |
| 837 Fcenter_to_window_line (Qzero, window); | |
| 838 scrollbar_reset_cursor (window, orig_pt); | |
| 839 zmacs_region_stays = 1; | |
| 840 return Qnil; | |
| 841 } | |
| 842 | |
| 843 DEFUN ("scrollbar-to-bottom", Fscrollbar_to_bottom, 1, 1, 0, /* | |
| 844 Function called when the user invokes the "to-bottom" scrollbar action. | |
| 845 The way this is done can vary from scrollbar to scrollbar, but | |
| 846 C-button1 on the down-arrow is very common. One argument, the | |
| 847 scrollbar's window. You can advise this function to change the | |
| 848 scrollbar behavior. | |
| 849 */ | |
| 850 (window)) | |
| 851 { | |
| 852 Lisp_Object orig_pt = Fwindow_point (window); | |
| 853 Fset_window_point (window, Fpoint_max (Fwindow_buffer (window))); | |
| 854 Fcenter_to_window_line (make_int (-3), window); | |
| 855 scrollbar_reset_cursor (window, orig_pt); | |
| 856 zmacs_region_stays = 1; | |
| 857 return Qnil; | |
| 858 } | |
| 859 | |
| 860 DEFUN ("scrollbar-vertical-drag", Fscrollbar_vertical_drag, 1, 1, 0, /* | |
| 861 Function called when the user drags the vertical scrollbar slider. | |
| 862 One argument, a cons containing the scrollbar's window and a value | |
| 863 between point-min and point-max. You can advise this function to | |
| 864 change the scrollbar behavior. | |
| 865 */ | |
| 866 (object)) | |
| 867 { | |
| 665 | 868 Charbpos start_pos; |
| 428 | 869 Lisp_Object orig_pt; |
| 870 Lisp_Object window = Fcar (object); | |
| 871 Lisp_Object value = Fcdr (object); | |
| 872 | |
| 873 orig_pt = Fwindow_point (window); | |
| 874 Fset_marker (XWINDOW (window)->sb_point, value, Fwindow_buffer (window)); | |
| 875 start_pos = scrollbar_point (XWINDOW (window), 1); | |
| 876 Fset_window_start (window, make_int (start_pos), Qnil); | |
| 877 scrollbar_reset_cursor (window, orig_pt); | |
| 878 Fsit_for(Qzero, Qnil); | |
| 879 zmacs_region_stays = 1; | |
| 880 return Qnil; | |
| 881 } | |
| 882 | |
| 883 DEFUN ("scrollbar-set-hscroll", Fscrollbar_set_hscroll, 2, 2, 0, /* | |
| 884 Set WINDOW's hscroll position to VALUE. | |
| 885 This ensures that VALUE is in the proper range for the horizontal scrollbar. | |
| 886 */ | |
| 887 (window, value)) | |
| 888 { | |
| 889 struct window *w; | |
| 890 int hscroll, wcw, max_len; | |
| 891 | |
| 892 CHECK_LIVE_WINDOW (window); | |
| 893 if (!EQ (value, Qmax)) | |
| 894 CHECK_INT (value); | |
| 895 | |
| 896 w = XWINDOW (window); | |
| 897 wcw = window_char_width (w, 0) - 1; | |
| 440 | 898 /* #### We should be able to scroll further right as long as there is |
| 428 | 899 a visible truncation glyph. This calculation for max is bogus. */ |
| 900 max_len = w->max_line_len + 2; | |
| 901 | |
| 902 if (EQ (value, Qmax) || (XINT (value) > (max_len - wcw))) | |
| 903 hscroll = max_len - wcw; | |
| 904 else | |
| 905 hscroll = XINT (value); | |
| 906 | |
| 907 /* Can't allow this out of set-window-hscroll's acceptable range. */ | |
| 908 /* #### What hell on the earth this code limits scroll size to the | |
| 909 machine-dependent SHORT size? -- kkm */ | |
| 910 if (hscroll < 0) | |
| 911 hscroll = 0; | |
| 912 else if (hscroll >= (1 << (SHORTBITS - 1)) - 1) | |
| 913 hscroll = (1 << (SHORTBITS - 1)) - 1; | |
| 914 | |
| 915 if (hscroll != w->hscroll) | |
| 916 Fset_window_hscroll (window, make_int (hscroll)); | |
| 917 | |
| 918 return Qnil; | |
| 919 } | |
| 920 | |
| 921 | |
| 922 /************************************************************************/ | |
| 923 /* initialization */ | |
| 924 /************************************************************************/ | |
| 925 | |
| 926 void | |
| 927 syms_of_scrollbar (void) | |
| 928 { | |
|
5117
3742ea8250b5
Checking in final CVS version of workspace 'ben-lisp-object'
Ben Wing <ben@xemacs.org>
parents:
3024
diff
changeset
|
929 INIT_LISP_OBJECT (scrollbar_instance); |
| 617 | 930 |
| 563 | 931 DEFSYMBOL (Qscrollbar_line_up); |
| 932 DEFSYMBOL (Qscrollbar_line_down); | |
| 933 DEFSYMBOL (Qscrollbar_page_up); | |
| 934 DEFSYMBOL (Qscrollbar_page_down); | |
| 935 DEFSYMBOL (Qscrollbar_to_top); | |
| 936 DEFSYMBOL (Qscrollbar_to_bottom); | |
| 937 DEFSYMBOL (Qscrollbar_vertical_drag); | |
| 428 | 938 |
| 563 | 939 DEFSYMBOL (Qscrollbar_char_left); |
| 940 DEFSYMBOL (Qscrollbar_char_right); | |
| 941 DEFSYMBOL (Qscrollbar_page_left); | |
| 942 DEFSYMBOL (Qscrollbar_page_right); | |
| 943 DEFSYMBOL (Qscrollbar_to_left); | |
| 944 DEFSYMBOL (Qscrollbar_to_right); | |
| 945 DEFSYMBOL (Qscrollbar_horizontal_drag); | |
| 428 | 946 |
| 563 | 947 DEFSYMBOL (Qinit_scrollbar_from_resources); |
| 428 | 948 |
| 949 /* #### All these functions should be moved into Lisp. | |
| 950 See comment above. */ | |
| 951 DEFSUBR (Fscrollbar_line_up); | |
| 952 DEFSUBR (Fscrollbar_line_down); | |
| 953 DEFSUBR (Fscrollbar_page_up); | |
| 954 DEFSUBR (Fscrollbar_page_down); | |
| 955 DEFSUBR (Fscrollbar_to_top); | |
| 956 DEFSUBR (Fscrollbar_to_bottom); | |
| 957 DEFSUBR (Fscrollbar_vertical_drag); | |
| 958 | |
| 959 DEFSUBR (Fscrollbar_set_hscroll); | |
| 960 } | |
| 961 | |
| 962 void | |
| 963 vars_of_scrollbar (void) | |
| 964 { | |
| 965 DEFVAR_LISP ("scrollbar-pointer-glyph", &Vscrollbar_pointer_glyph /* | |
| 966 *The shape of the mouse-pointer when over a scrollbar. | |
| 967 This is a glyph; use `set-glyph-image' to change it. | |
| 968 If unspecified in a particular domain, the window-system-provided | |
| 969 default pointer is used. | |
| 970 */ ); | |
| 971 | |
| 972 Fprovide (intern ("scrollbar")); | |
| 973 } | |
| 974 | |
| 975 void | |
| 976 specifier_vars_of_scrollbar (void) | |
| 977 { | |
| 978 DEFVAR_SPECIFIER ("scrollbar-width", &Vscrollbar_width /* | |
| 979 *Width of vertical scrollbars. | |
| 980 This is a specifier; use `set-specifier' to change it. | |
| 981 */ ); | |
| 982 Vscrollbar_width = make_magic_specifier (Qnatnum); | |
| 983 set_specifier_fallback | |
| 984 (Vscrollbar_width, | |
| 1295 | 985 #ifdef HAVE_TTY |
| 1287 | 986 list2 (Fcons (list1 (Qtty), make_int (0)), |
| 1295 | 987 Fcons (Qnil, make_int (DEFAULT_SCROLLBAR_WIDTH))) |
| 988 #else | |
| 989 list1 (Fcons (Qnil, make_int (DEFAULT_SCROLLBAR_WIDTH))) | |
| 990 #endif | |
| 991 ); | |
| 428 | 992 set_specifier_caching (Vscrollbar_width, |
| 438 | 993 offsetof (struct window, scrollbar_width), |
| 428 | 994 vertical_scrollbar_changed_in_window, |
| 438 | 995 offsetof (struct frame, scrollbar_width), |
| 444 | 996 frame_size_slipped, 0); |
| 428 | 997 |
| 998 DEFVAR_SPECIFIER ("scrollbar-height", &Vscrollbar_height /* | |
| 999 *Height of horizontal scrollbars. | |
| 1000 This is a specifier; use `set-specifier' to change it. | |
| 1001 */ ); | |
| 1002 Vscrollbar_height = make_magic_specifier (Qnatnum); | |
| 1003 set_specifier_fallback | |
| 1004 (Vscrollbar_height, | |
| 1295 | 1005 #ifdef HAVE_TTY |
| 1287 | 1006 list2 (Fcons (list1 (Qtty), make_int (0)), |
| 1295 | 1007 Fcons (Qnil, make_int (DEFAULT_SCROLLBAR_HEIGHT))) |
| 1008 #else | |
| 1009 list1 (Fcons (Qnil, make_int (DEFAULT_SCROLLBAR_HEIGHT))) | |
| 1010 #endif | |
| 1011 ); | |
| 428 | 1012 set_specifier_caching (Vscrollbar_height, |
| 438 | 1013 offsetof (struct window, scrollbar_height), |
| 428 | 1014 some_window_value_changed, |
| 438 | 1015 offsetof (struct frame, scrollbar_height), |
| 444 | 1016 frame_size_slipped, 0); |
| 428 | 1017 |
| 1018 DEFVAR_SPECIFIER ("horizontal-scrollbar-visible-p", &Vhorizontal_scrollbar_visible_p /* | |
| 1019 *Whether the horizontal scrollbar is visible. | |
| 1020 This is a specifier; use `set-specifier' to change it. | |
| 1021 */ ); | |
| 1022 Vhorizontal_scrollbar_visible_p = Fmake_specifier (Qboolean); | |
| 1023 set_specifier_fallback (Vhorizontal_scrollbar_visible_p, | |
| 1024 list1 (Fcons (Qnil, Qt))); | |
| 1025 set_specifier_caching (Vhorizontal_scrollbar_visible_p, | |
| 438 | 1026 offsetof (struct window, |
| 1027 horizontal_scrollbar_visible_p), | |
| 428 | 1028 some_window_value_changed, |
| 438 | 1029 offsetof (struct frame, |
| 1030 horizontal_scrollbar_visible_p), | |
| 444 | 1031 frame_size_slipped, 0); |
| 428 | 1032 |
| 1033 DEFVAR_SPECIFIER ("vertical-scrollbar-visible-p", &Vvertical_scrollbar_visible_p /* | |
| 1034 *Whether the vertical scrollbar is visible. | |
| 1035 This is a specifier; use `set-specifier' to change it. | |
| 1036 */ ); | |
| 1037 Vvertical_scrollbar_visible_p = Fmake_specifier (Qboolean); | |
| 1038 set_specifier_fallback (Vvertical_scrollbar_visible_p, | |
| 1039 list1 (Fcons (Qnil, Qt))); | |
| 1040 set_specifier_caching (Vvertical_scrollbar_visible_p, | |
| 438 | 1041 offsetof (struct window, |
| 1042 vertical_scrollbar_visible_p), | |
| 428 | 1043 vertical_scrollbar_changed_in_window, |
| 438 | 1044 offsetof (struct frame, |
| 1045 vertical_scrollbar_visible_p), | |
| 444 | 1046 frame_size_slipped, 0); |
| 428 | 1047 |
| 1048 DEFVAR_SPECIFIER ("scrollbar-on-left-p", &Vscrollbar_on_left_p /* | |
| 1049 *Whether the vertical scrollbar is on the left side of window or frame. | |
| 1050 This is a specifier; use `set-specifier' to change it. | |
| 1051 */ ); | |
| 1052 Vscrollbar_on_left_p = Fmake_specifier (Qboolean); | |
| 442 | 1053 |
| 428 | 1054 { |
| 1055 /* Kludge. Under X, we want athena scrollbars on the left, | |
| 1056 while all other scrollbars go on the right by default. */ | |
| 1057 Lisp_Object fallback = list1 (Fcons (Qnil, Qnil)); | |
| 1058 #if defined (HAVE_X_WINDOWS) \ | |
| 1059 && !defined (LWLIB_SCROLLBARS_MOTIF) \ | |
| 1060 && !defined (LWLIB_SCROLLBARS_LUCID) \ | |
| 1061 && !defined (LWLIB_SCROLLBARS_ATHENA3D) | |
| 1062 | |
| 1063 fallback = Fcons (Fcons (list1 (Qx), Qt), fallback); | |
| 1064 #endif | |
| 1065 set_specifier_fallback (Vscrollbar_on_left_p, fallback); | |
| 1066 } | |
| 1067 | |
| 1068 set_specifier_caching (Vscrollbar_on_left_p, | |
| 438 | 1069 offsetof (struct window, scrollbar_on_left_p), |
| 428 | 1070 vertical_scrollbar_changed_in_window, |
| 438 | 1071 offsetof (struct frame, scrollbar_on_left_p), |
| 444 | 1072 frame_size_slipped, 0); |
| 428 | 1073 |
| 1074 DEFVAR_SPECIFIER ("scrollbar-on-top-p", &Vscrollbar_on_top_p /* | |
| 1075 *Whether the horizontal scrollbar is on the top side of window or frame. | |
| 1076 This is a specifier; use `set-specifier' to change it. | |
| 1077 */ ); | |
| 1078 Vscrollbar_on_top_p = Fmake_specifier (Qboolean); | |
| 1079 set_specifier_fallback (Vscrollbar_on_top_p, | |
| 1080 list1 (Fcons (Qnil, Qnil))); | |
| 1081 set_specifier_caching (Vscrollbar_on_top_p, | |
| 438 | 1082 offsetof (struct window, scrollbar_on_top_p), |
| 428 | 1083 some_window_value_changed, |
| 438 | 1084 offsetof (struct frame, scrollbar_on_top_p), |
| 444 | 1085 frame_size_slipped, 0); |
| 428 | 1086 } |
| 1087 | |
| 1088 void | |
| 1089 complex_vars_of_scrollbar (void) | |
| 1090 { | |
| 1091 Vscrollbar_pointer_glyph = Fmake_glyph_internal (Qpointer); | |
| 1092 | |
| 1093 set_specifier_caching (XGLYPH (Vscrollbar_pointer_glyph)->image, | |
| 438 | 1094 offsetof (struct window, scrollbar_pointer), |
| 428 | 1095 scrollbar_pointer_changed_in_window, |
| 444 | 1096 0, 0, 0); |
| 428 | 1097 } |