Mercurial > hg > xemacs-beta
annotate src/scrollbar-x.c @ 5109:c113da3e2f67
add a comment about where FRAME_PIXWIDTH/FRAME_PIXHEIGHT is set
-------------------- ChangeLog entries follow: --------------------
src/ChangeLog addition:
2010-03-06 Ben Wing <ben@xemacs.org>
* frame.c (change_frame_size_1):
Add a comment about where FRAME_PIXWIDTH/FRAME_PIXHEIGHT is set.
| author | Ben Wing <ben@xemacs.org> |
|---|---|
| date | Sat, 06 Mar 2010 00:44:13 -0600 |
| parents | 6f2158fa75ed |
| children | 1fae11d56ad2 |
| rev | line source |
|---|---|
| 428 | 1 /* scrollbar implementation -- X interface. |
| 2 Copyright (C) 1994, 1995 Board of Trustees, University of Illinois. | |
| 3 Copyright (C) 1994 Amdahl Corporation. | |
| 4 Copyright (C) 1995 Sun Microsystems, Inc. | |
| 5 Copyright (C) 1995 Darrell Kindred <dkindred+@cmu.edu>. | |
|
5050
6f2158fa75ed
Fix quick-build, use asserts() in place of ABORT()
Ben Wing <ben@xemacs.org>
parents:
4976
diff
changeset
|
6 Copyright (C) 2010 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 | |
| 442 | 27 /* This file Mule-ized (more like Mule-verified) by Ben Wing, 7-8-00. */ |
| 28 | |
| 428 | 29 #include <config.h> |
| 30 #include "lisp.h" | |
| 31 | |
| 872 | 32 #include "device-impl.h" |
| 33 #include "frame-impl.h" | |
| 800 | 34 #include "window.h" |
| 35 | |
| 872 | 36 #include "console-x-impl.h" |
| 428 | 37 #include "glyphs-x.h" |
| 38 #include "scrollbar-x.h" | |
| 39 | |
| 800 | 40 #include "EmacsFrame.h" |
| 428 | 41 |
| 42 static void x_update_vertical_scrollbar_callback (Widget widget, LWLIB_ID id, | |
| 43 XtPointer client_data); | |
| 44 static void x_update_horizontal_scrollbar_callback (Widget widget, LWLIB_ID id, | |
| 45 XtPointer client_data); | |
| 46 | |
| 47 /* Used to prevent changing the size of the slider while drag | |
| 48 scrolling, under Motif. This is necessary because the Motif | |
| 49 scrollbar is incredibly stupid about updating the slider and causes | |
| 50 lots of flicker if it is done too often. */ | |
| 51 static int inhibit_slider_size_change; | |
| 52 int stupid_vertical_scrollbar_drag_hack; | |
| 53 | |
| 54 /* Doesn't work with athena */ | |
| 55 #if defined (LWLIB_SCROLLBARS_MOTIF) || defined (LWLIB_SCROLLBARS_LUCID) | |
| 56 static int vertical_drag_in_progress; | |
| 57 #endif | |
| 58 | |
| 59 | |
| 60 /* A device method. */ | |
| 61 static int | |
| 62 x_inhibit_scrollbar_slider_size_change (void) | |
| 63 { | |
| 64 /* Doesn't work with Athena */ | |
| 65 #if defined (LWLIB_SCROLLBARS_MOTIF) || defined (LWLIB_SCROLLBARS_LUCID) | |
| 66 return inhibit_slider_size_change; | |
| 67 #else | |
| 68 return 0; | |
| 69 #endif | |
| 70 } | |
| 71 | |
| 72 /* A device method. */ | |
| 73 static void | |
| 74 x_free_scrollbar_instance (struct scrollbar_instance *instance) | |
| 75 { | |
| 3462 | 76 if (instance->scrollbar_data) |
| 428 | 77 { |
| 3462 | 78 if (SCROLLBAR_X_NAME (instance)) |
|
4976
16112448d484
Rename xfree(FOO, TYPE) -> xfree(FOO)
Ben Wing <ben@xemacs.org>
parents:
3462
diff
changeset
|
79 xfree (SCROLLBAR_X_NAME (instance)); |
| 428 | 80 |
| 3462 | 81 if (SCROLLBAR_X_WIDGET (instance)) |
| 82 { | |
| 83 if (XtIsManaged (SCROLLBAR_X_WIDGET (instance))) | |
| 84 XtUnmanageChild (SCROLLBAR_X_WIDGET (instance)); | |
| 428 | 85 |
| 3462 | 86 lw_destroy_all_widgets (SCROLLBAR_X_ID (instance)); |
| 87 } | |
| 88 | |
|
4976
16112448d484
Rename xfree(FOO, TYPE) -> xfree(FOO)
Ben Wing <ben@xemacs.org>
parents:
3462
diff
changeset
|
89 xfree (instance->scrollbar_data); |
| 3462 | 90 } |
| 428 | 91 } |
| 92 | |
| 93 /* A device method. */ | |
| 94 static void | |
| 95 x_release_scrollbar_instance (struct scrollbar_instance *instance) | |
| 96 { | |
| 97 if (XtIsManaged (SCROLLBAR_X_WIDGET (instance))) | |
| 98 XtUnmanageChild (SCROLLBAR_X_WIDGET (instance)); | |
| 99 } | |
| 100 | |
| 101 /* A device method. */ | |
| 102 static void | |
| 103 x_create_scrollbar_instance (struct frame *f, int vertical, | |
| 104 struct scrollbar_instance *instance) | |
| 105 { | |
| 106 char buffer[32]; | |
| 107 | |
| 108 /* initialize the X specific data section. */ | |
| 109 instance->scrollbar_data = xnew_and_zero (struct x_scrollbar_data); | |
| 110 | |
| 111 SCROLLBAR_X_ID (instance) = new_lwlib_id (); | |
| 112 sprintf (buffer, "scrollbar_%d", SCROLLBAR_X_ID (instance)); | |
| 113 SCROLLBAR_X_NAME (instance) = xstrdup (buffer); | |
| 114 #if defined (LWLIB_SCROLLBARS_MOTIF) || defined (LWLIB_SCROLLBARS_LUCID) || \ | |
| 115 defined (LWLIB_SCROLLBARS_ATHENA3D) | |
| 116 SCROLLBAR_X_VDRAG_ORIG_VALUE (instance) = -1; | |
| 117 #endif | |
| 118 | |
| 119 if (vertical) | |
| 120 { | |
| 121 SCROLLBAR_X_WIDGET (instance) = | |
| 122 lw_create_widget ("vertical-scrollbar", SCROLLBAR_X_NAME (instance), | |
| 123 SCROLLBAR_X_ID (instance), | |
| 124 NULL, FRAME_X_CONTAINER_WIDGET (f), 0, | |
| 125 x_update_vertical_scrollbar_callback, NULL, NULL); | |
| 126 } | |
| 127 else | |
| 128 { | |
| 129 SCROLLBAR_X_WIDGET (instance) = | |
| 130 lw_create_widget ("horizontal-scrollbar", SCROLLBAR_X_NAME (instance), | |
| 131 SCROLLBAR_X_ID (instance), | |
| 132 NULL, FRAME_X_CONTAINER_WIDGET (f), 0, | |
| 133 x_update_horizontal_scrollbar_callback, NULL, NULL); | |
| 134 } | |
| 135 } | |
| 136 | |
| 137 #define UPDATE_DATA_FIELD(field) \ | |
| 138 if (new_##field >= 0 && \ | |
| 139 SCROLLBAR_X_POS_DATA (inst).field != new_##field) { \ | |
| 140 SCROLLBAR_X_POS_DATA (inst).field = new_##field; \ | |
| 141 inst->scrollbar_instance_changed = 1; \ | |
| 142 } | |
| 143 | |
| 144 /* A device method. */ | |
| 145 /* #### The -1 check is such a hack. */ | |
| 146 static void | |
| 147 x_update_scrollbar_instance_values (struct window *w, | |
| 148 struct scrollbar_instance *inst, | |
| 149 int new_line_increment, | |
| 150 int new_page_increment, | |
| 151 int new_minimum, int new_maximum, | |
| 152 int new_slider_size, | |
| 153 int new_slider_position, | |
| 154 int new_scrollbar_width, | |
| 155 int new_scrollbar_height, | |
| 156 int new_scrollbar_x, int new_scrollbar_y) | |
| 157 { | |
| 158 UPDATE_DATA_FIELD (line_increment); | |
| 159 UPDATE_DATA_FIELD (page_increment); | |
| 160 UPDATE_DATA_FIELD (minimum); | |
| 161 UPDATE_DATA_FIELD (maximum); | |
| 162 UPDATE_DATA_FIELD (slider_size); | |
| 163 UPDATE_DATA_FIELD (slider_position); | |
| 164 UPDATE_DATA_FIELD (scrollbar_width); | |
| 165 UPDATE_DATA_FIELD (scrollbar_height); | |
| 166 UPDATE_DATA_FIELD (scrollbar_x); | |
| 167 UPDATE_DATA_FIELD (scrollbar_y); | |
| 168 | |
| 169 /* This doesn't work with Athena, why? */ | |
| 170 #if defined (LWLIB_SCROLLBARS_MOTIF) || defined (LWLIB_SCROLLBARS_LUCID) | |
| 171 if (w && !vertical_drag_in_progress) | |
| 172 { | |
| 173 int new_vov = SCROLLBAR_X_POS_DATA (inst).slider_position; | |
| 174 int new_vows = marker_position (w->start[CURRENT_DISP]); | |
| 175 | |
| 176 if (SCROLLBAR_X_VDRAG_ORIG_VALUE (inst) != new_vov) | |
| 177 { | |
| 178 SCROLLBAR_X_VDRAG_ORIG_VALUE (inst) = new_vov; | |
| 179 inst->scrollbar_instance_changed = 1; | |
| 180 } | |
| 181 if (SCROLLBAR_X_VDRAG_ORIG_WINDOW_START (inst) != new_vows) | |
| 182 { | |
| 183 SCROLLBAR_X_VDRAG_ORIG_WINDOW_START (inst) = new_vows; | |
| 184 inst->scrollbar_instance_changed = 1; | |
| 185 } | |
| 186 } | |
| 187 #endif | |
| 188 } | |
| 189 | |
| 190 /* Used by x_update_scrollbar_instance_status. */ | |
| 191 static void | |
| 192 update_one_scrollbar_bs (struct frame *f, Widget sb_widget) | |
| 193 { | |
| 194 Boolean use_backing_store; | |
| 195 | |
| 196 Xt_GET_VALUE (FRAME_X_TEXT_WIDGET (f), XtNuseBackingStore, &use_backing_store); | |
| 197 | |
| 198 if (use_backing_store && sb_widget) | |
| 199 { | |
| 200 unsigned long mask = CWBackingStore; | |
| 201 XSetWindowAttributes attrs; | |
| 202 | |
| 203 attrs.backing_store = Always; | |
| 204 XChangeWindowAttributes (XtDisplay (sb_widget), | |
| 205 XtWindow (sb_widget), | |
| 206 mask, | |
| 207 &attrs); | |
| 208 } | |
| 209 } | |
| 210 | |
| 211 /* Create a widget value structure for passing down to lwlib so that | |
| 212 it can update the scrollbar widgets. Used by | |
| 213 x_update_scrollbar_instance_status. */ | |
| 214 static widget_value * | |
| 215 scrollbar_instance_to_widget_value (struct scrollbar_instance *instance) | |
| 216 { | |
| 217 widget_value *wv; | |
| 218 | |
| 219 wv = xmalloc_widget_value (); | |
| 220 /* #### maybe should add malloc_scrollbar_values to resource these? */ | |
| 221 wv->scrollbar_data = xnew (scrollbar_values); | |
| 222 | |
| 223 wv->name = SCROLLBAR_X_NAME (instance); | |
| 436 | 224 wv->name = xstrdup (wv->name); |
| 428 | 225 wv->value = 0; |
| 226 wv->key = 0; | |
| 227 wv->enabled = instance->scrollbar_is_active; | |
| 228 wv->selected = 0; | |
| 229 wv->call_data = NULL; | |
| 230 | |
| 231 *wv->scrollbar_data = SCROLLBAR_X_POS_DATA (instance); | |
| 232 | |
| 233 wv->next = NULL; | |
| 234 | |
| 235 return wv; | |
| 236 } | |
| 237 | |
| 238 /* Used by x_update_scrollbar_instance_status. */ | |
| 239 static void | |
| 240 update_one_widget_scrollbar_pointer (struct window *w, Widget wid) | |
| 241 { | |
| 242 if (POINTER_IMAGE_INSTANCEP (w->scrollbar_pointer)) | |
| 243 { | |
| 244 XDefineCursor (XtDisplay (wid), XtWindow (wid), | |
| 245 XIMAGE_INSTANCE_X_CURSOR (w->scrollbar_pointer)); | |
| 246 XSync (XtDisplay (wid), False); | |
| 247 } | |
| 248 } | |
| 249 | |
| 250 /* A device method. */ | |
| 251 static void | |
| 252 x_update_scrollbar_instance_status (struct window *w, int active, int size, | |
| 253 struct scrollbar_instance *instance) | |
| 254 { | |
| 255 struct frame *f = XFRAME (w->frame); | |
| 256 Boolean managed = XtIsManaged (SCROLLBAR_X_WIDGET (instance)); | |
| 257 | |
| 258 if (active && size) | |
| 259 { | |
| 260 widget_value *wv = scrollbar_instance_to_widget_value (instance); | |
| 261 | |
| 262 if (instance->scrollbar_instance_changed) | |
| 263 { | |
| 264 lw_modify_all_widgets (SCROLLBAR_X_ID (instance), wv, 0); | |
| 265 instance->scrollbar_instance_changed = 0; | |
| 266 } | |
| 267 | |
| 268 if (!managed) | |
| 269 { | |
| 270 XtManageChild (SCROLLBAR_X_WIDGET (instance)); | |
| 271 if (XtWindow (SCROLLBAR_X_WIDGET (instance))) | |
| 272 { | |
| 273 /* Raise this window so that it's visible on top of the | |
| 274 text window below it. */ | |
| 275 XRaiseWindow (XtDisplay (SCROLLBAR_X_WIDGET (instance)), | |
| 276 XtWindow (SCROLLBAR_X_WIDGET (instance))); | |
| 277 update_one_widget_scrollbar_pointer | |
| 278 (w, SCROLLBAR_X_WIDGET (instance)); | |
| 279 if (!SCROLLBAR_X_BACKING_STORE_INITIALIZED (instance)) | |
| 280 { | |
| 281 update_one_scrollbar_bs (f, SCROLLBAR_X_WIDGET (instance)); | |
| 282 SCROLLBAR_X_BACKING_STORE_INITIALIZED (instance) = 1; | |
| 283 } | |
| 284 } | |
| 285 } | |
| 286 | |
|
5050
6f2158fa75ed
Fix quick-build, use asserts() in place of ABORT()
Ben Wing <ben@xemacs.org>
parents:
4976
diff
changeset
|
287 assert (wv->scrollbar_data); |
| 436 | 288 free_widget_value_tree (wv); |
| 428 | 289 } |
| 290 else if (managed) | |
| 291 { | |
| 292 #if defined (LWLIB_SCROLLBARS_MOTIF) || defined (LWLIB_SCROLLBARS_LUCID) | |
| 293 /* This isn't needed with Athena Scrollbars. It might not be needed */ | |
| 294 /* with Motif scrollbars (it is apparently needed with Lesstif). */ | |
| 295 XtUngrabKeyboard (SCROLLBAR_X_WIDGET (instance), CurrentTime); | |
| 296 #endif | |
| 297 XtUnmanageChild (SCROLLBAR_X_WIDGET (instance)); | |
| 298 } | |
| 299 } | |
| 300 | |
| 301 enum x_scrollbar_loop | |
| 302 { | |
| 303 X_FIND_SCROLLBAR_WINDOW_MIRROR, | |
| 304 X_SET_SCROLLBAR_POINTER, | |
| 305 X_WINDOW_IS_SCROLLBAR, | |
| 306 X_UPDATE_FRAME_SCROLLBARS | |
| 307 }; | |
| 308 | |
| 309 static struct window_mirror * | |
| 310 x_scrollbar_loop (enum x_scrollbar_loop type, Lisp_Object window, | |
| 311 struct window_mirror *mir, | |
| 312 LWLIB_ID id, Window x_win) | |
| 313 { | |
| 314 struct window_mirror *retval = NULL; | |
| 315 | |
| 316 while (mir) | |
| 317 { | |
| 318 struct scrollbar_instance *vinstance = mir->scrollbar_vertical_instance; | |
| 319 struct scrollbar_instance *hinstance = mir->scrollbar_horizontal_instance; | |
| 320 struct window *w = XWINDOW (window); | |
| 321 | |
| 322 if (mir->vchild) | |
| 323 retval = x_scrollbar_loop (type, w->vchild, mir->vchild, id, x_win); | |
| 324 else if (mir->hchild) | |
| 325 retval = x_scrollbar_loop (type, w->hchild, mir->hchild, id, x_win); | |
| 326 if (retval) | |
| 327 return retval; | |
| 328 | |
| 329 if (hinstance || vinstance) | |
| 330 { | |
| 331 switch (type) | |
| 332 { | |
| 333 case X_FIND_SCROLLBAR_WINDOW_MIRROR: | |
| 334 if ((vinstance && SCROLLBAR_X_ID (vinstance) == id) || | |
| 335 (hinstance && SCROLLBAR_X_ID (hinstance) == id)) | |
| 336 return mir; | |
| 337 break; | |
| 338 case X_UPDATE_FRAME_SCROLLBARS: | |
| 339 if (!mir->vchild && !mir->hchild) | |
| 340 update_window_scrollbars (w, mir, 1, 0); | |
| 341 break; | |
| 342 case X_SET_SCROLLBAR_POINTER: | |
| 343 if (!mir->vchild && !mir->hchild) | |
| 344 { | |
| 345 Widget widget; | |
| 346 | |
| 347 widget = SCROLLBAR_X_WIDGET (hinstance); | |
| 348 if (widget && XtIsManaged (widget)) | |
| 349 update_one_widget_scrollbar_pointer (w, widget); | |
| 350 | |
| 351 widget = SCROLLBAR_X_WIDGET (vinstance); | |
| 352 if (widget && XtIsManaged (widget)) | |
| 353 update_one_widget_scrollbar_pointer (w, widget); | |
| 354 } | |
| 355 break; | |
| 356 case X_WINDOW_IS_SCROLLBAR: | |
| 357 if (!mir->vchild && !mir->hchild) | |
| 358 { | |
| 359 Widget widget; | |
| 360 | |
| 361 widget = SCROLLBAR_X_WIDGET (hinstance); | |
| 362 if (widget && XtIsManaged (widget) && | |
| 363 XtWindow (widget) == x_win) | |
| 364 return (struct window_mirror *) 1; | |
| 365 | |
| 366 widget = SCROLLBAR_X_WIDGET (vinstance); | |
| 367 if (widget && XtIsManaged (widget) && | |
| 368 XtWindow (widget) == x_win) | |
| 369 return (struct window_mirror *) 1; | |
| 370 } | |
| 371 break; | |
| 372 default: | |
| 2500 | 373 ABORT (); |
| 428 | 374 } |
| 375 } | |
| 376 | |
| 377 mir = mir->next; | |
| 378 window = w->next; | |
| 379 } | |
| 380 | |
| 381 return NULL; | |
| 382 } | |
| 383 | |
| 384 /* Used by callbacks. */ | |
| 385 static struct window_mirror * | |
| 386 find_scrollbar_window_mirror (struct frame *f, LWLIB_ID id) | |
| 387 { | |
| 388 if (f->mirror_dirty) | |
| 389 update_frame_window_mirror (f); | |
| 390 return x_scrollbar_loop (X_FIND_SCROLLBAR_WINDOW_MIRROR, f->root_window, | |
| 617 | 391 XWINDOW_MIRROR (f->root_mirror), id, (Window) NULL); |
| 428 | 392 } |
| 393 | |
| 394 /* | |
| 395 * This is the only callback provided for vertical scrollbars. It | |
| 396 * should be able to handle all of the scrollbar events in | |
| 397 * scroll_action (see lwlib.h). The client data will be of type | |
| 398 * scroll_event (see lwlib.h). */ | |
| 399 static void | |
| 400 x_update_vertical_scrollbar_callback (Widget widget, LWLIB_ID id, | |
| 401 XtPointer client_data) | |
| 402 { | |
| 403 /* This function can GC */ | |
| 404 scroll_event *data = (scroll_event *) client_data; | |
| 405 struct device *d = get_device_from_display (XtDisplay (widget)); | |
| 406 struct frame *f = x_any_window_to_frame (d, XtWindow (widget)); | |
| 407 Lisp_Object win, frame; | |
| 408 struct scrollbar_instance *instance; | |
| 409 struct window_mirror *mirror; | |
| 410 | |
| 411 if (!f) | |
| 412 return; | |
| 413 | |
| 414 mirror = find_scrollbar_window_mirror (f, id); | |
| 442 | 415 if (!mirror) |
| 416 return; | |
| 417 | |
| 428 | 418 win = real_window (mirror, 1); |
| 419 | |
| 420 if (NILP (win)) | |
| 421 return; | |
| 422 instance = mirror->scrollbar_vertical_instance; | |
| 423 frame = WINDOW_FRAME (XWINDOW (win)); | |
| 424 | |
| 425 /* It seems that this is necessary whenever signal_special_Xt_user_event() | |
| 426 is called. #### Why??? */ | |
| 427 DEVICE_X_MOUSE_TIMESTAMP (d) = DEVICE_X_GLOBAL_MOUSE_TIMESTAMP (d); | |
| 428 | |
| 429 switch (data->action) | |
| 430 { | |
| 431 case SCROLLBAR_LINE_UP: | |
| 432 signal_special_Xt_user_event (frame, Qscrollbar_line_up, win); | |
| 433 break; | |
| 434 | |
| 435 case SCROLLBAR_LINE_DOWN: | |
| 436 signal_special_Xt_user_event (frame, Qscrollbar_line_down, win); | |
| 437 break; | |
| 438 | |
| 439 /* The Athena scrollbar paging behavior is that of xterms. | |
| 440 Depending on where you click the size of the page varies. | |
| 441 Motif always does a standard Emacs page. */ | |
| 442 case SCROLLBAR_PAGE_UP: | |
| 443 #if !defined (LWLIB_SCROLLBARS_MOTIF) && !defined (LWLIB_SCROLLBARS_LUCID) && \ | |
| 444 !defined (LWLIB_SCROLLBARS_ATHENA3D) | |
| 445 { | |
| 446 double tmp = ((double) data->slider_value / | |
| 447 (double) SCROLLBAR_X_POS_DATA(instance).scrollbar_height); | |
| 448 double line = tmp * | |
| 449 (double) window_displayed_height (XWINDOW (win)); | |
| 450 | |
| 451 if (line > -1.0) | |
| 452 line = -1.0; | |
| 453 signal_special_Xt_user_event (frame, Qscrollbar_page_up, | |
| 454 Fcons (win, make_int ((int) line))); | |
| 455 } | |
| 456 #else | |
| 457 signal_special_Xt_user_event (frame, Qscrollbar_page_up, | |
| 458 Fcons (win, Qnil)); | |
| 459 #endif | |
| 460 break; | |
| 461 | |
| 462 case SCROLLBAR_PAGE_DOWN: | |
| 463 #if !defined (LWLIB_SCROLLBARS_MOTIF) && !defined (LWLIB_SCROLLBARS_LUCID) && \ | |
| 464 !defined (LWLIB_SCROLLBARS_ATHENA3D) | |
| 465 { | |
| 466 double tmp = ((double) data->slider_value / | |
| 467 (double) SCROLLBAR_X_POS_DATA(instance).scrollbar_height); | |
| 468 double line = tmp * | |
| 469 (double) window_displayed_height (XWINDOW (win)); | |
| 470 | |
| 471 if (SCROLLBAR_X_POS_DATA(instance).maximum > | |
| 472 (SCROLLBAR_X_POS_DATA(instance).slider_size + SCROLLBAR_X_POS_DATA(instance).slider_position)) | |
| 473 { | |
| 474 if (line < 1.0) | |
| 475 line = 1.0; | |
| 476 signal_special_Xt_user_event (frame, Qscrollbar_page_down, | |
| 477 Fcons (win, | |
| 478 make_int ((int) line))); | |
| 479 } | |
| 480 } | |
| 481 #else | |
| 482 signal_special_Xt_user_event (frame, Qscrollbar_page_down, | |
| 483 Fcons (win, Qnil)); | |
| 484 #endif | |
| 485 break; | |
| 486 | |
| 487 case SCROLLBAR_TOP: | |
| 488 signal_special_Xt_user_event (frame, Qscrollbar_to_top, win); | |
| 489 break; | |
| 490 | |
| 491 case SCROLLBAR_BOTTOM: | |
| 492 signal_special_Xt_user_event (frame, Qscrollbar_to_bottom, win); | |
| 493 break; | |
| 494 | |
| 495 | |
| 496 case SCROLLBAR_CHANGE: | |
| 497 inhibit_slider_size_change = 0; | |
| 498 #if defined (LWLIB_SCROLLBARS_MOTIF) || defined (LWLIB_SCROLLBARS_LUCID) | |
| 499 vertical_drag_in_progress = 0; | |
| 500 SCROLLBAR_X_VDRAG_ORIG_VALUE (instance) = data->slider_value; | |
| 501 SCROLLBAR_X_VDRAG_ORIG_WINDOW_START (instance) = | |
| 502 XINT (Fwindow_start (win)); | |
| 503 #else | |
| 504 stupid_vertical_scrollbar_drag_hack = 0; | |
| 505 #endif | |
| 506 break; | |
| 507 | |
| 508 case SCROLLBAR_DRAG: | |
| 509 { | |
| 510 int value; | |
| 511 | |
| 512 inhibit_slider_size_change = 1; | |
| 513 | |
| 514 #if defined (LWLIB_SCROLLBARS_MOTIF) || defined (LWLIB_SCROLLBARS_LUCID) | |
| 515 /* Doing drags with Motif-like scrollbars is a mess, since we | |
| 516 want to avoid having the window position jump when you | |
| 517 first grab the scrollbar, but we also want to ensure that | |
| 518 you can scroll all the way to the top or bottom of the | |
| 519 buffer. This can all be replaced with something sane when | |
| 520 we get line-based scrolling. */ | |
| 521 | |
| 522 vertical_drag_in_progress = 1; | |
| 523 | |
| 524 if (SCROLLBAR_X_VDRAG_ORIG_VALUE (instance) < 0) | |
| 525 { | |
| 526 SCROLLBAR_X_VDRAG_ORIG_VALUE (instance) = data->slider_value; | |
| 527 SCROLLBAR_X_VDRAG_ORIG_WINDOW_START (instance) = | |
| 528 XINT (Fwindow_start (win)); | |
| 529 } | |
| 530 | |
| 531 /* Could replace this piecewise linear scrolling with a | |
| 532 quadratic through the three points, but I'm not sure that | |
| 533 would feel any nicer in practice. */ | |
| 534 if (data->slider_value < SCROLLBAR_X_VDRAG_ORIG_VALUE (instance)) | |
| 535 { | |
| 536 /* We've dragged up; slide linearly from original position to | |
| 537 window-start=data.minimum, slider-value=data.minimum. */ | |
| 538 | |
| 539 if (SCROLLBAR_X_VDRAG_ORIG_VALUE (instance) | |
| 540 <= SCROLLBAR_X_POS_DATA (instance).minimum) | |
| 541 { | |
| 542 /* shouldn't get here, but just in case */ | |
| 543 value = SCROLLBAR_X_POS_DATA (instance).minimum; | |
| 544 } | |
| 545 else | |
| 546 { | |
| 547 value = (int) | |
| 548 (SCROLLBAR_X_POS_DATA (instance).minimum | |
| 549 + (((double) | |
| 550 (SCROLLBAR_X_VDRAG_ORIG_WINDOW_START (instance) | |
| 551 - SCROLLBAR_X_POS_DATA (instance).minimum) | |
| 552 * (data->slider_value - | |
| 553 SCROLLBAR_X_POS_DATA (instance).minimum)) | |
| 554 / (SCROLLBAR_X_VDRAG_ORIG_VALUE (instance) | |
| 555 - SCROLLBAR_X_POS_DATA (instance).minimum))); | |
| 556 } | |
| 557 } | |
| 558 else | |
| 559 { | |
| 560 /* We've dragged down; slide linearly from original position to | |
| 561 window-start=data.maximum, slider-value=data.maximum. */ | |
| 562 | |
| 563 if (SCROLLBAR_X_VDRAG_ORIG_VALUE (instance) | |
| 564 >= (SCROLLBAR_X_POS_DATA (instance).maximum - | |
| 565 SCROLLBAR_X_POS_DATA (instance).slider_size)) | |
| 566 { | |
| 567 /* avoid divide by zero */ | |
| 568 value = SCROLLBAR_X_VDRAG_ORIG_WINDOW_START (instance); | |
| 569 } | |
| 570 else | |
| 571 { | |
| 572 value = (int) | |
| 573 (SCROLLBAR_X_VDRAG_ORIG_WINDOW_START (instance) | |
| 574 + (((double) | |
| 575 (SCROLLBAR_X_POS_DATA (instance).maximum | |
| 576 - SCROLLBAR_X_VDRAG_ORIG_WINDOW_START (instance)) | |
| 577 * (data->slider_value | |
| 578 - SCROLLBAR_X_VDRAG_ORIG_VALUE (instance))) | |
| 579 / (SCROLLBAR_X_POS_DATA (instance).maximum | |
| 580 - SCROLLBAR_X_POS_DATA (instance).slider_size | |
| 581 - SCROLLBAR_X_VDRAG_ORIG_VALUE (instance)))); | |
| 582 } | |
| 583 } | |
| 584 #else | |
| 585 stupid_vertical_scrollbar_drag_hack = 0; | |
| 586 value = data->slider_value; | |
| 587 #endif | |
| 588 | |
| 589 if (value >= SCROLLBAR_X_POS_DATA (instance).maximum) | |
| 590 value = SCROLLBAR_X_POS_DATA (instance).maximum - 1; | |
| 591 if (value < SCROLLBAR_X_POS_DATA (instance).minimum) | |
| 592 value = SCROLLBAR_X_POS_DATA (instance).minimum; | |
| 593 | |
| 594 signal_special_Xt_user_event (frame, Qscrollbar_vertical_drag, | |
| 595 Fcons (win, make_int (value))); | |
| 596 } | |
| 597 break; | |
| 598 | |
| 599 } | |
| 600 } | |
| 601 | |
| 602 /* | |
| 603 * This is the only callback provided for horizontal scrollbars. It | |
| 604 * should be able to handle all of the scrollbar events in | |
| 605 * scroll_action (see lwlib.h). The client data will be of type | |
| 606 * scroll_event (see lwlib.h). */ | |
| 607 static void | |
| 608 x_update_horizontal_scrollbar_callback (Widget widget, LWLIB_ID id, | |
| 609 XtPointer client_data) | |
| 610 { | |
| 611 scroll_event *data = (scroll_event *) client_data; | |
| 612 struct device *d = get_device_from_display (XtDisplay (widget)); | |
| 613 struct frame *f = x_any_window_to_frame (d, XtWindow (widget)); | |
| 614 Lisp_Object win, frame; | |
| 615 struct window_mirror *mirror; | |
| 616 | |
| 617 if (!f) | |
| 618 return; | |
| 619 | |
| 620 mirror = find_scrollbar_window_mirror (f, id); | |
| 442 | 621 if (!mirror) |
| 622 return; | |
| 623 | |
| 428 | 624 win = real_window (mirror, 1); |
| 625 | |
| 626 if (NILP (win)) | |
| 627 return; | |
| 628 frame = WINDOW_FRAME (XWINDOW (win)); | |
| 629 | |
| 630 /* It seems that this is necessary whenever signal_special_Xt_user_event() | |
| 631 is called. #### Why??? */ | |
| 632 DEVICE_X_MOUSE_TIMESTAMP (d) = DEVICE_X_GLOBAL_MOUSE_TIMESTAMP (d); | |
| 633 | |
| 634 switch (data->action) | |
| 635 { | |
| 636 case SCROLLBAR_LINE_UP: | |
| 637 signal_special_Xt_user_event (frame, Qscrollbar_char_left, win); | |
| 638 break; | |
| 639 case SCROLLBAR_LINE_DOWN: | |
| 640 signal_special_Xt_user_event (frame, Qscrollbar_char_right, win); | |
| 641 break; | |
| 642 case SCROLLBAR_PAGE_UP: | |
| 643 signal_special_Xt_user_event (frame, Qscrollbar_page_left, win); | |
| 644 break; | |
| 645 case SCROLLBAR_PAGE_DOWN: | |
| 646 signal_special_Xt_user_event (frame, Qscrollbar_page_right, win); | |
| 647 break; | |
| 648 case SCROLLBAR_TOP: | |
| 649 signal_special_Xt_user_event (frame, Qscrollbar_to_left, win); | |
| 650 break; | |
| 651 case SCROLLBAR_BOTTOM: | |
| 652 signal_special_Xt_user_event (frame, Qscrollbar_to_right, win); | |
| 653 break; | |
| 654 case SCROLLBAR_CHANGE: | |
| 655 inhibit_slider_size_change = 0; | |
| 656 break; | |
| 657 case SCROLLBAR_DRAG: | |
| 658 inhibit_slider_size_change = 1; | |
| 659 /* #### Fix the damn toolkit code so they all work the same way. | |
| 660 Lucid is the one mostly wrong.*/ | |
| 661 #if defined (LWLIB_SCROLLBARS_LUCID) || defined (LWLIB_SCROLLBARS_ATHENA3D) | |
| 662 signal_special_Xt_user_event (frame, Qscrollbar_horizontal_drag, | |
| 663 (Fcons | |
| 664 (win, make_int (data->slider_value)))); | |
| 665 #else | |
| 666 signal_special_Xt_user_event (frame, Qscrollbar_horizontal_drag, | |
| 667 (Fcons | |
| 668 (win, | |
| 669 make_int (data->slider_value - 1)))); | |
| 670 #endif | |
| 671 break; | |
| 672 default: | |
| 673 break; | |
| 674 } | |
| 675 } | |
| 676 | |
| 677 static void | |
| 678 x_scrollbar_pointer_changed_in_window (struct window *w) | |
| 679 { | |
| 793 | 680 Lisp_Object window = wrap_window (w); |
| 428 | 681 |
| 682 x_scrollbar_loop (X_SET_SCROLLBAR_POINTER, window, find_window_mirror (w), | |
| 683 0, (Window) NULL); | |
| 684 } | |
| 685 | |
| 686 /* Make sure that all scrollbars on frame are up-to-date. Called | |
| 687 directly from x_set_frame_properties in frame-x.c*/ | |
| 688 void | |
| 689 x_update_frame_scrollbars (struct frame *f) | |
| 690 { | |
| 617 | 691 x_scrollbar_loop (X_UPDATE_FRAME_SCROLLBARS, f->root_window, |
| 692 XWINDOW_MIRROR (f->root_mirror), 0, (Window) NULL); | |
| 428 | 693 } |
| 694 | |
| 695 #ifdef MEMORY_USAGE_STATS | |
| 696 | |
| 697 static int | |
| 2286 | 698 x_compute_scrollbar_instance_usage (struct device *UNUSED (d), |
| 428 | 699 struct scrollbar_instance *inst, |
| 700 struct overhead_stats *ovstats) | |
| 701 { | |
| 702 int total = 0; | |
| 703 | |
| 704 while (inst) | |
| 705 { | |
| 706 struct x_scrollbar_data *data = | |
| 707 (struct x_scrollbar_data *) inst->scrollbar_data; | |
| 708 | |
| 3024 | 709 total += malloced_storage_size (data, sizeof (*data), ovstats); |
| 710 total += malloced_storage_size (data->name, 1 + strlen (data->name), | |
| 428 | 711 ovstats); |
| 712 inst = inst->next; | |
| 713 } | |
| 714 | |
| 715 return total; | |
| 716 } | |
| 717 | |
| 718 #endif /* MEMORY_USAGE_STATS */ | |
| 719 | |
| 720 | |
| 721 /************************************************************************/ | |
| 722 /* initialization */ | |
| 723 /************************************************************************/ | |
| 724 | |
| 725 void | |
| 726 console_type_create_scrollbar_x (void) | |
| 727 { | |
| 728 CONSOLE_HAS_METHOD (x, inhibit_scrollbar_slider_size_change); | |
| 729 CONSOLE_HAS_METHOD (x, free_scrollbar_instance); | |
| 730 CONSOLE_HAS_METHOD (x, release_scrollbar_instance); | |
| 731 CONSOLE_HAS_METHOD (x, create_scrollbar_instance); | |
| 732 CONSOLE_HAS_METHOD (x, update_scrollbar_instance_values); | |
| 733 CONSOLE_HAS_METHOD (x, update_scrollbar_instance_status); | |
| 734 CONSOLE_HAS_METHOD (x, scrollbar_pointer_changed_in_window); | |
| 735 #ifdef MEMORY_USAGE_STATS | |
| 736 CONSOLE_HAS_METHOD (x, compute_scrollbar_instance_usage); | |
| 737 #endif /* MEMORY_USAGE_STATS */ | |
| 738 } | |
| 739 | |
| 740 void | |
| 741 reinit_vars_of_scrollbar_x (void) | |
| 742 { | |
| 743 stupid_vertical_scrollbar_drag_hack = 1; | |
| 744 } | |
| 745 | |
| 746 void | |
| 747 vars_of_scrollbar_x (void) | |
| 748 { | |
| 749 #if defined (LWLIB_SCROLLBARS_LUCID) | |
| 750 Fprovide (intern ("lucid-scrollbars")); | |
| 751 #elif defined (LWLIB_SCROLLBARS_MOTIF) | |
| 752 Fprovide (intern ("motif-scrollbars")); | |
| 753 #elif defined (LWLIB_SCROLLBARS_ATHENA) | |
| 754 Fprovide (intern ("athena-scrollbars")); | |
| 755 #endif | |
| 756 } |