|
0
|
1 /* scrollbar implementation -- X interface.
|
|
|
2 Copyright (C) 1994, 1995 Board of Trustees, University of Illinois.
|
|
380
|
3 Copyright (C) 1994 Amdahl Corporation.
|
|
0
|
4 Copyright (C) 1995 Sun Microsystems, Inc.
|
|
|
5 Copyright (C) 1995 Darrell Kindred <dkindred+@cmu.edu>.
|
|
|
6
|
|
|
7 This file is part of XEmacs.
|
|
|
8
|
|
|
9 XEmacs is free software; you can redistribute it and/or modify it
|
|
|
10 under the terms of the GNU General Public License as published by the
|
|
|
11 Free Software Foundation; either version 2, or (at your option) any
|
|
|
12 later version.
|
|
|
13
|
|
|
14 XEmacs is distributed in the hope that it will be useful, but WITHOUT
|
|
|
15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
|
16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
|
17 for more details.
|
|
|
18
|
|
|
19 You should have received a copy of the GNU General Public License
|
|
|
20 along with XEmacs; see the file COPYING. If not, write to
|
|
|
21 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
|
22 Boston, MA 02111-1307, USA. */
|
|
|
23
|
|
|
24 /* Synched up with: Not in FSF. */
|
|
|
25
|
|
|
26 #include <config.h>
|
|
|
27 #include "lisp.h"
|
|
|
28
|
|
|
29 #include "console-x.h"
|
|
424
|
30 #include "EmacsFrame.h"
|
|
0
|
31 #include "glyphs-x.h"
|
|
|
32 #include "gui-x.h"
|
|
|
33 #include "scrollbar-x.h"
|
|
|
34
|
|
|
35 #include "frame.h"
|
|
|
36 #include "window.h"
|
|
|
37
|
|
|
38 static void x_update_vertical_scrollbar_callback (Widget widget, LWLIB_ID id,
|
|
|
39 XtPointer client_data);
|
|
|
40 static void x_update_horizontal_scrollbar_callback (Widget widget, LWLIB_ID id,
|
|
|
41 XtPointer client_data);
|
|
|
42
|
|
102
|
43 /* Used to prevent changing the size of the slider while drag
|
|
0
|
44 scrolling, under Motif. This is necessary because the Motif
|
|
102
|
45 scrollbar is incredibly stupid about updating the slider and causes
|
|
0
|
46 lots of flicker if it is done too often. */
|
|
102
|
47 static int inhibit_slider_size_change;
|
|
86
|
48 int stupid_vertical_scrollbar_drag_hack;
|
|
0
|
49
|
|
82
|
50 /* Doesn't work with athena */
|
|
0
|
51 #if defined (LWLIB_SCROLLBARS_MOTIF) || defined (LWLIB_SCROLLBARS_LUCID)
|
|
|
52 static int vertical_drag_in_progress;
|
|
|
53 #endif
|
|
|
54
|
|
|
55
|
|
|
56 /* A device method. */
|
|
|
57 static int
|
|
102
|
58 x_inhibit_scrollbar_slider_size_change (void)
|
|
0
|
59 {
|
|
84
|
60 /* Doesn't work with Athena */
|
|
0
|
61 #if defined (LWLIB_SCROLLBARS_MOTIF) || defined (LWLIB_SCROLLBARS_LUCID)
|
|
102
|
62 return inhibit_slider_size_change;
|
|
0
|
63 #else
|
|
|
64 return 0;
|
|
|
65 #endif
|
|
|
66 }
|
|
|
67
|
|
|
68 /* A device method. */
|
|
|
69 static void
|
|
|
70 x_free_scrollbar_instance (struct scrollbar_instance *instance)
|
|
|
71 {
|
|
|
72 if (SCROLLBAR_X_NAME (instance))
|
|
|
73 xfree (SCROLLBAR_X_NAME (instance));
|
|
|
74
|
|
|
75 if (SCROLLBAR_X_WIDGET (instance))
|
|
|
76 {
|
|
|
77 if (XtIsManaged (SCROLLBAR_X_WIDGET (instance)))
|
|
|
78 XtUnmanageChild (SCROLLBAR_X_WIDGET (instance));
|
|
|
79
|
|
|
80 lw_destroy_all_widgets (SCROLLBAR_X_ID (instance));
|
|
|
81 }
|
|
|
82
|
|
|
83 if (instance->scrollbar_data)
|
|
|
84 xfree (instance->scrollbar_data);
|
|
|
85 }
|
|
|
86
|
|
|
87 /* A device method. */
|
|
|
88 static void
|
|
|
89 x_release_scrollbar_instance (struct scrollbar_instance *instance)
|
|
|
90 {
|
|
|
91 if (XtIsManaged (SCROLLBAR_X_WIDGET (instance)))
|
|
|
92 XtUnmanageChild (SCROLLBAR_X_WIDGET (instance));
|
|
|
93 }
|
|
|
94
|
|
|
95 /* A device method. */
|
|
|
96 static void
|
|
|
97 x_create_scrollbar_instance (struct frame *f, int vertical,
|
|
|
98 struct scrollbar_instance *instance)
|
|
|
99 {
|
|
|
100 char buffer[32];
|
|
|
101
|
|
|
102 /* initialize the X specific data section. */
|
|
185
|
103 instance->scrollbar_data = xnew_and_zero (struct x_scrollbar_data);
|
|
0
|
104
|
|
|
105 SCROLLBAR_X_ID (instance) = new_lwlib_id ();
|
|
|
106 sprintf (buffer, "scrollbar_%d", SCROLLBAR_X_ID (instance));
|
|
|
107 SCROLLBAR_X_NAME (instance) = xstrdup (buffer);
|
|
82
|
108 #if defined (LWLIB_SCROLLBARS_MOTIF) || defined (LWLIB_SCROLLBARS_LUCID) || \
|
|
|
109 defined (LWLIB_SCROLLBARS_ATHENA3D)
|
|
0
|
110 SCROLLBAR_X_VDRAG_ORIG_VALUE (instance) = -1;
|
|
|
111 #endif
|
|
|
112
|
|
|
113 if (vertical)
|
|
|
114 {
|
|
|
115 SCROLLBAR_X_WIDGET (instance) =
|
|
|
116 lw_create_widget ("vertical-scrollbar", SCROLLBAR_X_NAME (instance),
|
|
|
117 SCROLLBAR_X_ID (instance),
|
|
|
118 NULL, FRAME_X_CONTAINER_WIDGET (f), 0,
|
|
|
119 x_update_vertical_scrollbar_callback, NULL, NULL);
|
|
|
120 }
|
|
|
121 else
|
|
|
122 {
|
|
|
123 SCROLLBAR_X_WIDGET (instance) =
|
|
|
124 lw_create_widget ("horizontal-scrollbar", SCROLLBAR_X_NAME (instance),
|
|
|
125 SCROLLBAR_X_ID (instance),
|
|
|
126 NULL, FRAME_X_CONTAINER_WIDGET (f), 0,
|
|
|
127 x_update_horizontal_scrollbar_callback, NULL, NULL);
|
|
|
128 }
|
|
|
129 }
|
|
|
130
|
|
102
|
131 #define UPDATE_DATA_FIELD(field) \
|
|
|
132 if (new_##field >= 0 && \
|
|
|
133 SCROLLBAR_X_POS_DATA (inst).field != new_##field) { \
|
|
|
134 SCROLLBAR_X_POS_DATA (inst).field = new_##field; \
|
|
|
135 inst->scrollbar_instance_changed = 1; \
|
|
0
|
136 }
|
|
|
137
|
|
|
138 /* A device method. */
|
|
|
139 /* #### The -1 check is such a hack. */
|
|
|
140 static void
|
|
|
141 x_update_scrollbar_instance_values (struct window *w,
|
|
|
142 struct scrollbar_instance *inst,
|
|
|
143 int new_line_increment,
|
|
|
144 int new_page_increment,
|
|
|
145 int new_minimum, int new_maximum,
|
|
|
146 int new_slider_size,
|
|
|
147 int new_slider_position,
|
|
|
148 int new_scrollbar_width,
|
|
|
149 int new_scrollbar_height,
|
|
|
150 int new_scrollbar_x, int new_scrollbar_y)
|
|
|
151 {
|
|
|
152 UPDATE_DATA_FIELD (line_increment);
|
|
|
153 UPDATE_DATA_FIELD (page_increment);
|
|
|
154 UPDATE_DATA_FIELD (minimum);
|
|
|
155 UPDATE_DATA_FIELD (maximum);
|
|
|
156 UPDATE_DATA_FIELD (slider_size);
|
|
|
157 UPDATE_DATA_FIELD (slider_position);
|
|
|
158 UPDATE_DATA_FIELD (scrollbar_width);
|
|
|
159 UPDATE_DATA_FIELD (scrollbar_height);
|
|
|
160 UPDATE_DATA_FIELD (scrollbar_x);
|
|
|
161 UPDATE_DATA_FIELD (scrollbar_y);
|
|
|
162
|
|
82
|
163 /* This doesn't work with Athena, why? */
|
|
0
|
164 #if defined (LWLIB_SCROLLBARS_MOTIF) || defined (LWLIB_SCROLLBARS_LUCID)
|
|
|
165 if (w && !vertical_drag_in_progress)
|
|
|
166 {
|
|
|
167 int new_vov = SCROLLBAR_X_POS_DATA (inst).slider_position;
|
|
|
168 int new_vows = marker_position (w->start[CURRENT_DISP]);
|
|
|
169
|
|
|
170 if (SCROLLBAR_X_VDRAG_ORIG_VALUE (inst) != new_vov)
|
|
|
171 {
|
|
|
172 SCROLLBAR_X_VDRAG_ORIG_VALUE (inst) = new_vov;
|
|
|
173 inst->scrollbar_instance_changed = 1;
|
|
|
174 }
|
|
|
175 if (SCROLLBAR_X_VDRAG_ORIG_WINDOW_START (inst) != new_vows)
|
|
|
176 {
|
|
|
177 SCROLLBAR_X_VDRAG_ORIG_WINDOW_START (inst) = new_vows;
|
|
|
178 inst->scrollbar_instance_changed = 1;
|
|
|
179 }
|
|
|
180 }
|
|
|
181 #endif
|
|
|
182 }
|
|
|
183
|
|
|
184 /* Used by x_update_scrollbar_instance_status. */
|
|
|
185 static void
|
|
|
186 update_one_scrollbar_bs (struct frame *f, Widget sb_widget)
|
|
|
187 {
|
|
|
188 Boolean use_backing_store;
|
|
|
189
|
|
272
|
190 Xt_GET_VALUE (FRAME_X_TEXT_WIDGET (f), XtNuseBackingStore, &use_backing_store);
|
|
0
|
191
|
|
|
192 if (use_backing_store && sb_widget)
|
|
|
193 {
|
|
|
194 unsigned long mask = CWBackingStore;
|
|
|
195 XSetWindowAttributes attrs;
|
|
185
|
196
|
|
0
|
197 attrs.backing_store = Always;
|
|
|
198 XChangeWindowAttributes (XtDisplay (sb_widget),
|
|
|
199 XtWindow (sb_widget),
|
|
|
200 mask,
|
|
|
201 &attrs);
|
|
|
202 }
|
|
|
203 }
|
|
|
204
|
|
|
205 /* Create a widget value structure for passing down to lwlib so that
|
|
|
206 it can update the scrollbar widgets. Used by
|
|
|
207 x_update_scrollbar_instance_status. */
|
|
|
208 static widget_value *
|
|
|
209 scrollbar_instance_to_widget_value (struct scrollbar_instance *instance)
|
|
|
210 {
|
|
|
211 widget_value *wv;
|
|
|
212
|
|
|
213 wv = xmalloc_widget_value ();
|
|
|
214 /* #### maybe should add malloc_scrollbar_values to resource these? */
|
|
185
|
215 wv->scrollbar_data = xnew (scrollbar_values);
|
|
0
|
216
|
|
|
217 wv->name = SCROLLBAR_X_NAME (instance);
|
|
|
218 wv->value = 0;
|
|
|
219 wv->key = 0;
|
|
|
220 wv->enabled = instance->scrollbar_is_active;
|
|
|
221 wv->selected = 0;
|
|
|
222 wv->call_data = NULL;
|
|
|
223
|
|
|
224 *wv->scrollbar_data = SCROLLBAR_X_POS_DATA (instance);
|
|
|
225
|
|
|
226 wv->next = NULL;
|
|
|
227
|
|
|
228 return wv;
|
|
|
229 }
|
|
|
230
|
|
|
231 /* Used by x_update_scrollbar_instance_status. */
|
|
|
232 static void
|
|
|
233 update_one_widget_scrollbar_pointer (struct window *w, Widget wid)
|
|
|
234 {
|
|
|
235 if (POINTER_IMAGE_INSTANCEP (w->scrollbar_pointer))
|
|
|
236 {
|
|
185
|
237 XDefineCursor (XtDisplay (wid), XtWindow (wid),
|
|
0
|
238 XIMAGE_INSTANCE_X_CURSOR (w->scrollbar_pointer));
|
|
|
239 XSync (XtDisplay (wid), False);
|
|
|
240 }
|
|
|
241 }
|
|
|
242
|
|
|
243 /* A device method. */
|
|
|
244 static void
|
|
|
245 x_update_scrollbar_instance_status (struct window *w, int active, int size,
|
|
|
246 struct scrollbar_instance *instance)
|
|
|
247 {
|
|
|
248 struct frame *f = XFRAME (w->frame);
|
|
102
|
249 Boolean managed = XtIsManaged (SCROLLBAR_X_WIDGET (instance));
|
|
0
|
250
|
|
|
251 if (active && size)
|
|
|
252 {
|
|
|
253 widget_value *wv = scrollbar_instance_to_widget_value (instance);
|
|
|
254
|
|
|
255 if (instance->scrollbar_instance_changed)
|
|
|
256 {
|
|
|
257 lw_modify_all_widgets (SCROLLBAR_X_ID (instance), wv, 0);
|
|
|
258 instance->scrollbar_instance_changed = 0;
|
|
|
259 }
|
|
|
260
|
|
|
261 if (!managed)
|
|
|
262 {
|
|
|
263 XtManageChild (SCROLLBAR_X_WIDGET (instance));
|
|
|
264 if (XtWindow (SCROLLBAR_X_WIDGET (instance)))
|
|
|
265 {
|
|
|
266 /* Raise this window so that it's visible on top of the
|
|
|
267 text window below it. */
|
|
|
268 XRaiseWindow (XtDisplay (SCROLLBAR_X_WIDGET (instance)),
|
|
|
269 XtWindow (SCROLLBAR_X_WIDGET (instance)));
|
|
|
270 update_one_widget_scrollbar_pointer
|
|
|
271 (w, SCROLLBAR_X_WIDGET (instance));
|
|
|
272 if (!SCROLLBAR_X_BACKING_STORE_INITIALIZED (instance))
|
|
|
273 {
|
|
|
274 update_one_scrollbar_bs (f, SCROLLBAR_X_WIDGET (instance));
|
|
|
275 SCROLLBAR_X_BACKING_STORE_INITIALIZED (instance) = 1;
|
|
|
276 }
|
|
|
277 }
|
|
|
278 }
|
|
|
279
|
|
|
280 if (!wv->scrollbar_data) abort ();
|
|
412
|
281 xfree (wv->scrollbar_data);
|
|
|
282 wv->scrollbar_data = 0;
|
|
|
283 free_widget_value (wv);
|
|
0
|
284 }
|
|
|
285 else if (managed)
|
|
|
286 {
|
|
201
|
287 #if defined (LWLIB_SCROLLBARS_MOTIF) || defined (LWLIB_SCROLLBARS_LUCID)
|
|
|
288 /* This isn't needed with Athena Scrollbars. It might not be needed */
|
|
|
289 /* with Motif scrollbars (it is apparently needed with Lesstif). */
|
|
|
290 XtUngrabKeyboard (SCROLLBAR_X_WIDGET (instance), CurrentTime);
|
|
|
291 #endif
|
|
0
|
292 XtUnmanageChild (SCROLLBAR_X_WIDGET (instance));
|
|
|
293 }
|
|
|
294 }
|
|
|
295
|
|
|
296 enum x_scrollbar_loop
|
|
|
297 {
|
|
|
298 X_FIND_SCROLLBAR_WINDOW_MIRROR,
|
|
|
299 X_SET_SCROLLBAR_POINTER,
|
|
|
300 X_WINDOW_IS_SCROLLBAR,
|
|
|
301 X_UPDATE_FRAME_SCROLLBARS
|
|
|
302 };
|
|
|
303
|
|
|
304 static struct window_mirror *
|
|
|
305 x_scrollbar_loop (enum x_scrollbar_loop type, Lisp_Object window,
|
|
|
306 struct window_mirror *mir,
|
|
|
307 LWLIB_ID id, Window x_win)
|
|
|
308 {
|
|
|
309 struct window_mirror *retval = NULL;
|
|
|
310
|
|
|
311 while (mir)
|
|
|
312 {
|
|
|
313 struct scrollbar_instance *vinstance = mir->scrollbar_vertical_instance;
|
|
272
|
314 struct scrollbar_instance *hinstance = mir->scrollbar_horizontal_instance;
|
|
|
315 struct window *w = XWINDOW (window);
|
|
0
|
316
|
|
|
317 if (mir->vchild)
|
|
272
|
318 retval = x_scrollbar_loop (type, w->vchild, mir->vchild, id, x_win);
|
|
0
|
319 else if (mir->hchild)
|
|
272
|
320 retval = x_scrollbar_loop (type, w->hchild, mir->hchild, id, x_win);
|
|
|
321 if (retval)
|
|
0
|
322 return retval;
|
|
|
323
|
|
|
324 if (hinstance || vinstance)
|
|
|
325 {
|
|
|
326 switch (type)
|
|
|
327 {
|
|
|
328 case X_FIND_SCROLLBAR_WINDOW_MIRROR:
|
|
272
|
329 if ((vinstance && SCROLLBAR_X_ID (vinstance) == id) ||
|
|
|
330 (hinstance && SCROLLBAR_X_ID (hinstance) == id))
|
|
|
331 return mir;
|
|
0
|
332 break;
|
|
|
333 case X_UPDATE_FRAME_SCROLLBARS:
|
|
|
334 if (!mir->vchild && !mir->hchild)
|
|
272
|
335 update_window_scrollbars (w, mir, 1, 0);
|
|
0
|
336 break;
|
|
|
337 case X_SET_SCROLLBAR_POINTER:
|
|
|
338 if (!mir->vchild && !mir->hchild)
|
|
|
339 {
|
|
272
|
340 Widget widget;
|
|
0
|
341
|
|
272
|
342 widget = SCROLLBAR_X_WIDGET (hinstance);
|
|
|
343 if (widget && XtIsManaged (widget))
|
|
|
344 update_one_widget_scrollbar_pointer (w, widget);
|
|
0
|
345
|
|
272
|
346 widget = SCROLLBAR_X_WIDGET (vinstance);
|
|
|
347 if (widget && XtIsManaged (widget))
|
|
|
348 update_one_widget_scrollbar_pointer (w, widget);
|
|
0
|
349 }
|
|
|
350 break;
|
|
|
351 case X_WINDOW_IS_SCROLLBAR:
|
|
|
352 if (!mir->vchild && !mir->hchild)
|
|
|
353 {
|
|
272
|
354 Widget widget;
|
|
0
|
355
|
|
272
|
356 widget = SCROLLBAR_X_WIDGET (hinstance);
|
|
|
357 if (widget && XtIsManaged (widget) &&
|
|
|
358 XtWindow (widget) == x_win)
|
|
|
359 return (struct window_mirror *) 1;
|
|
0
|
360
|
|
272
|
361 widget = SCROLLBAR_X_WIDGET (vinstance);
|
|
|
362 if (widget && XtIsManaged (widget) &&
|
|
|
363 XtWindow (widget) == x_win)
|
|
|
364 return (struct window_mirror *) 1;
|
|
0
|
365 }
|
|
|
366 break;
|
|
|
367 default:
|
|
|
368 abort ();
|
|
|
369 }
|
|
|
370 }
|
|
|
371
|
|
|
372 mir = mir->next;
|
|
272
|
373 window = w->next;
|
|
0
|
374 }
|
|
|
375
|
|
|
376 return NULL;
|
|
|
377 }
|
|
|
378
|
|
|
379 /* Used by callbacks. */
|
|
|
380 static struct window_mirror *
|
|
|
381 find_scrollbar_window_mirror (struct frame *f, LWLIB_ID id)
|
|
|
382 {
|
|
|
383 if (f->mirror_dirty)
|
|
|
384 update_frame_window_mirror (f);
|
|
|
385 return x_scrollbar_loop (X_FIND_SCROLLBAR_WINDOW_MIRROR, f->root_window,
|
|
|
386 f->root_mirror, id, (Window) NULL);
|
|
|
387 }
|
|
|
388
|
|
|
389 /*
|
|
|
390 * This is the only callback provided for vertical scrollbars. It
|
|
|
391 * should be able to handle all of the scrollbar events in
|
|
|
392 * scroll_action (see lwlib.h). The client data will be of type
|
|
|
393 * scroll_event (see lwlib.h). */
|
|
|
394 static void
|
|
|
395 x_update_vertical_scrollbar_callback (Widget widget, LWLIB_ID id,
|
|
|
396 XtPointer client_data)
|
|
|
397 {
|
|
|
398 /* This function can GC */
|
|
|
399 scroll_event *data = (scroll_event *) client_data;
|
|
|
400 struct device *d = get_device_from_display (XtDisplay (widget));
|
|
|
401 struct frame *f = x_any_window_to_frame (d, XtWindow (widget));
|
|
288
|
402 Lisp_Object win, frame;
|
|
0
|
403 struct scrollbar_instance *instance;
|
|
|
404 struct window_mirror *mirror;
|
|
|
405
|
|
|
406 if (!f)
|
|
|
407 return;
|
|
|
408
|
|
|
409 mirror = find_scrollbar_window_mirror (f, id);
|
|
|
410 win = real_window (mirror, 1);
|
|
|
411
|
|
|
412 if (NILP (win))
|
|
|
413 return;
|
|
|
414 instance = mirror->scrollbar_vertical_instance;
|
|
288
|
415 frame = WINDOW_FRAME (XWINDOW (win));
|
|
0
|
416
|
|
|
417 /* It seems that this is necessary whenever signal_special_Xt_user_event()
|
|
|
418 is called. #### Why??? */
|
|
|
419 DEVICE_X_MOUSE_TIMESTAMP (d) = DEVICE_X_GLOBAL_MOUSE_TIMESTAMP (d);
|
|
|
420
|
|
|
421 switch (data->action)
|
|
|
422 {
|
|
|
423 case SCROLLBAR_LINE_UP:
|
|
288
|
424 signal_special_Xt_user_event (frame, Qscrollbar_line_up, win);
|
|
0
|
425 break;
|
|
|
426
|
|
|
427 case SCROLLBAR_LINE_DOWN:
|
|
288
|
428 signal_special_Xt_user_event (frame, Qscrollbar_line_down, win);
|
|
0
|
429 break;
|
|
|
430
|
|
|
431 /* The Athena scrollbar paging behavior is that of xterms.
|
|
|
432 Depending on where you click the size of the page varies.
|
|
|
433 Motif always does a standard Emacs page. */
|
|
|
434 case SCROLLBAR_PAGE_UP:
|
|
82
|
435 #if !defined (LWLIB_SCROLLBARS_MOTIF) && !defined (LWLIB_SCROLLBARS_LUCID) && \
|
|
|
436 !defined (LWLIB_SCROLLBARS_ATHENA3D)
|
|
0
|
437 {
|
|
|
438 double tmp = ((double) data->slider_value /
|
|
|
439 (double) SCROLLBAR_X_POS_DATA(instance).scrollbar_height);
|
|
|
440 double line = tmp *
|
|
|
441 (double) window_displayed_height (XWINDOW (win));
|
|
185
|
442
|
|
0
|
443 if (line > -1.0)
|
|
|
444 line = -1.0;
|
|
288
|
445 signal_special_Xt_user_event (frame, Qscrollbar_page_up,
|
|
0
|
446 Fcons (win, make_int ((int) line)));
|
|
|
447 }
|
|
|
448 #else
|
|
288
|
449 signal_special_Xt_user_event (frame, Qscrollbar_page_up,
|
|
0
|
450 Fcons (win, Qnil));
|
|
|
451 #endif
|
|
|
452 break;
|
|
|
453
|
|
|
454 case SCROLLBAR_PAGE_DOWN:
|
|
82
|
455 #if !defined (LWLIB_SCROLLBARS_MOTIF) && !defined (LWLIB_SCROLLBARS_LUCID) && \
|
|
|
456 !defined (LWLIB_SCROLLBARS_ATHENA3D)
|
|
0
|
457 {
|
|
|
458 double tmp = ((double) data->slider_value /
|
|
|
459 (double) SCROLLBAR_X_POS_DATA(instance).scrollbar_height);
|
|
|
460 double line = tmp *
|
|
|
461 (double) window_displayed_height (XWINDOW (win));
|
|
|
462
|
|
|
463 if (SCROLLBAR_X_POS_DATA(instance).maximum >
|
|
|
464 (SCROLLBAR_X_POS_DATA(instance).slider_size + SCROLLBAR_X_POS_DATA(instance).slider_position))
|
|
|
465 {
|
|
|
466 if (line < 1.0)
|
|
|
467 line = 1.0;
|
|
288
|
468 signal_special_Xt_user_event (frame, Qscrollbar_page_down,
|
|
0
|
469 Fcons (win,
|
|
|
470 make_int ((int) line)));
|
|
|
471 }
|
|
|
472 }
|
|
|
473 #else
|
|
288
|
474 signal_special_Xt_user_event (frame, Qscrollbar_page_down,
|
|
0
|
475 Fcons (win, Qnil));
|
|
|
476 #endif
|
|
|
477 break;
|
|
|
478
|
|
|
479 case SCROLLBAR_TOP:
|
|
288
|
480 signal_special_Xt_user_event (frame, Qscrollbar_to_top, win);
|
|
0
|
481 break;
|
|
|
482
|
|
|
483 case SCROLLBAR_BOTTOM:
|
|
288
|
484 signal_special_Xt_user_event (frame, Qscrollbar_to_bottom, win);
|
|
0
|
485 break;
|
|
|
486
|
|
|
487
|
|
|
488 case SCROLLBAR_CHANGE:
|
|
102
|
489 inhibit_slider_size_change = 0;
|
|
0
|
490 #if defined (LWLIB_SCROLLBARS_MOTIF) || defined (LWLIB_SCROLLBARS_LUCID)
|
|
|
491 vertical_drag_in_progress = 0;
|
|
|
492 SCROLLBAR_X_VDRAG_ORIG_VALUE (instance) = data->slider_value;
|
|
|
493 SCROLLBAR_X_VDRAG_ORIG_WINDOW_START (instance) =
|
|
|
494 XINT (Fwindow_start (win));
|
|
84
|
495 #else
|
|
|
496 stupid_vertical_scrollbar_drag_hack = 0;
|
|
0
|
497 #endif
|
|
|
498 break;
|
|
|
499
|
|
|
500 case SCROLLBAR_DRAG:
|
|
|
501 {
|
|
|
502 int value;
|
|
|
503
|
|
102
|
504 inhibit_slider_size_change = 1;
|
|
0
|
505
|
|
|
506 #if defined (LWLIB_SCROLLBARS_MOTIF) || defined (LWLIB_SCROLLBARS_LUCID)
|
|
|
507 /* Doing drags with Motif-like scrollbars is a mess, since we
|
|
|
508 want to avoid having the window position jump when you
|
|
|
509 first grab the scrollbar, but we also want to ensure that
|
|
|
510 you can scroll all the way to the top or bottom of the
|
|
|
511 buffer. This can all be replaced with something sane when
|
|
|
512 we get line-based scrolling. */
|
|
|
513
|
|
|
514 vertical_drag_in_progress = 1;
|
|
185
|
515
|
|
|
516 if (SCROLLBAR_X_VDRAG_ORIG_VALUE (instance) < 0)
|
|
0
|
517 {
|
|
|
518 SCROLLBAR_X_VDRAG_ORIG_VALUE (instance) = data->slider_value;
|
|
|
519 SCROLLBAR_X_VDRAG_ORIG_WINDOW_START (instance) =
|
|
|
520 XINT (Fwindow_start (win));
|
|
|
521 }
|
|
|
522
|
|
|
523 /* Could replace this piecewise linear scrolling with a
|
|
|
524 quadratic through the three points, but I'm not sure that
|
|
|
525 would feel any nicer in practice. */
|
|
185
|
526 if (data->slider_value < SCROLLBAR_X_VDRAG_ORIG_VALUE (instance))
|
|
0
|
527 {
|
|
|
528 /* We've dragged up; slide linearly from original position to
|
|
|
529 window-start=data.minimum, slider-value=data.minimum. */
|
|
|
530
|
|
|
531 if (SCROLLBAR_X_VDRAG_ORIG_VALUE (instance)
|
|
185
|
532 <= SCROLLBAR_X_POS_DATA (instance).minimum)
|
|
0
|
533 {
|
|
|
534 /* shouldn't get here, but just in case */
|
|
|
535 value = SCROLLBAR_X_POS_DATA (instance).minimum;
|
|
|
536 }
|
|
|
537 else
|
|
|
538 {
|
|
272
|
539 value = (int)
|
|
|
540 (SCROLLBAR_X_POS_DATA (instance).minimum
|
|
|
541 + (((double)
|
|
|
542 (SCROLLBAR_X_VDRAG_ORIG_WINDOW_START (instance)
|
|
|
543 - SCROLLBAR_X_POS_DATA (instance).minimum)
|
|
|
544 * (data->slider_value -
|
|
|
545 SCROLLBAR_X_POS_DATA (instance).minimum))
|
|
|
546 / (SCROLLBAR_X_VDRAG_ORIG_VALUE (instance)
|
|
|
547 - SCROLLBAR_X_POS_DATA (instance).minimum)));
|
|
0
|
548 }
|
|
|
549 }
|
|
185
|
550 else
|
|
0
|
551 {
|
|
|
552 /* We've dragged down; slide linearly from original position to
|
|
|
553 window-start=data.maximum, slider-value=data.maximum. */
|
|
|
554
|
|
185
|
555 if (SCROLLBAR_X_VDRAG_ORIG_VALUE (instance)
|
|
0
|
556 >= (SCROLLBAR_X_POS_DATA (instance).maximum -
|
|
|
557 SCROLLBAR_X_POS_DATA (instance).slider_size))
|
|
|
558 {
|
|
|
559 /* avoid divide by zero */
|
|
|
560 value = SCROLLBAR_X_VDRAG_ORIG_WINDOW_START (instance);
|
|
185
|
561 }
|
|
|
562 else
|
|
0
|
563 {
|
|
272
|
564 value = (int)
|
|
|
565 (SCROLLBAR_X_VDRAG_ORIG_WINDOW_START (instance)
|
|
|
566 + (((double)
|
|
|
567 (SCROLLBAR_X_POS_DATA (instance).maximum
|
|
|
568 - SCROLLBAR_X_VDRAG_ORIG_WINDOW_START (instance))
|
|
|
569 * (data->slider_value
|
|
|
570 - SCROLLBAR_X_VDRAG_ORIG_VALUE (instance)))
|
|
|
571 / (SCROLLBAR_X_POS_DATA (instance).maximum
|
|
|
572 - SCROLLBAR_X_POS_DATA (instance).slider_size
|
|
|
573 - SCROLLBAR_X_VDRAG_ORIG_VALUE (instance))));
|
|
0
|
574 }
|
|
|
575 }
|
|
|
576 #else
|
|
82
|
577 stupid_vertical_scrollbar_drag_hack = 0;
|
|
0
|
578 value = data->slider_value;
|
|
|
579 #endif
|
|
|
580
|
|
|
581 if (value >= SCROLLBAR_X_POS_DATA (instance).maximum)
|
|
|
582 value = SCROLLBAR_X_POS_DATA (instance).maximum - 1;
|
|
|
583 if (value < SCROLLBAR_X_POS_DATA (instance).minimum)
|
|
|
584 value = SCROLLBAR_X_POS_DATA (instance).minimum;
|
|
|
585
|
|
288
|
586 signal_special_Xt_user_event (frame, Qscrollbar_vertical_drag,
|
|
0
|
587 Fcons (win, make_int (value)));
|
|
|
588 }
|
|
|
589 break;
|
|
|
590
|
|
|
591 }
|
|
|
592 }
|
|
|
593
|
|
|
594 /*
|
|
|
595 * This is the only callback provided for horizontal scrollbars. It
|
|
|
596 * should be able to handle all of the scrollbar events in
|
|
|
597 * scroll_action (see lwlib.h). The client data will be of type
|
|
|
598 * scroll_event (see lwlib.h). */
|
|
|
599 static void
|
|
|
600 x_update_horizontal_scrollbar_callback (Widget widget, LWLIB_ID id,
|
|
|
601 XtPointer client_data)
|
|
|
602 {
|
|
|
603 scroll_event *data = (scroll_event *) client_data;
|
|
|
604 struct device *d = get_device_from_display (XtDisplay (widget));
|
|
|
605 struct frame *f = x_any_window_to_frame (d, XtWindow (widget));
|
|
288
|
606 Lisp_Object win, frame;
|
|
0
|
607 struct window_mirror *mirror;
|
|
|
608
|
|
|
609 if (!f)
|
|
|
610 return;
|
|
|
611
|
|
|
612 mirror = find_scrollbar_window_mirror (f, id);
|
|
|
613 win = real_window (mirror, 1);
|
|
|
614
|
|
|
615 if (NILP (win))
|
|
|
616 return;
|
|
288
|
617 frame = WINDOW_FRAME (XWINDOW (win));
|
|
0
|
618
|
|
|
619 /* It seems that this is necessary whenever signal_special_Xt_user_event()
|
|
|
620 is called. #### Why??? */
|
|
|
621 DEVICE_X_MOUSE_TIMESTAMP (d) = DEVICE_X_GLOBAL_MOUSE_TIMESTAMP (d);
|
|
|
622
|
|
|
623 switch (data->action)
|
|
|
624 {
|
|
|
625 case SCROLLBAR_LINE_UP:
|
|
288
|
626 signal_special_Xt_user_event (frame, Qscrollbar_char_left, win);
|
|
0
|
627 break;
|
|
|
628 case SCROLLBAR_LINE_DOWN:
|
|
288
|
629 signal_special_Xt_user_event (frame, Qscrollbar_char_right, win);
|
|
0
|
630 break;
|
|
|
631 case SCROLLBAR_PAGE_UP:
|
|
288
|
632 signal_special_Xt_user_event (frame, Qscrollbar_page_left, win);
|
|
0
|
633 break;
|
|
|
634 case SCROLLBAR_PAGE_DOWN:
|
|
288
|
635 signal_special_Xt_user_event (frame, Qscrollbar_page_right, win);
|
|
0
|
636 break;
|
|
|
637 case SCROLLBAR_TOP:
|
|
288
|
638 signal_special_Xt_user_event (frame, Qscrollbar_to_left, win);
|
|
0
|
639 break;
|
|
|
640 case SCROLLBAR_BOTTOM:
|
|
288
|
641 signal_special_Xt_user_event (frame, Qscrollbar_to_right, win);
|
|
0
|
642 break;
|
|
|
643 case SCROLLBAR_CHANGE:
|
|
102
|
644 inhibit_slider_size_change = 0;
|
|
0
|
645 break;
|
|
|
646 case SCROLLBAR_DRAG:
|
|
102
|
647 inhibit_slider_size_change = 1;
|
|
0
|
648 /* #### Fix the damn toolkit code so they all work the same way.
|
|
|
649 Lucid is the one mostly wrong.*/
|
|
82
|
650 #if defined (LWLIB_SCROLLBARS_LUCID) || defined (LWLIB_SCROLLBARS_ATHENA3D)
|
|
288
|
651 signal_special_Xt_user_event (frame, Qscrollbar_horizontal_drag,
|
|
0
|
652 (Fcons
|
|
|
653 (win, make_int (data->slider_value))));
|
|
|
654 #else
|
|
288
|
655 signal_special_Xt_user_event (frame, Qscrollbar_horizontal_drag,
|
|
0
|
656 (Fcons
|
|
|
657 (win,
|
|
|
658 make_int (data->slider_value - 1))));
|
|
|
659 #endif
|
|
|
660 break;
|
|
|
661 default:
|
|
|
662 break;
|
|
|
663 }
|
|
|
664 }
|
|
|
665
|
|
|
666 static void
|
|
|
667 x_scrollbar_pointer_changed_in_window (struct window *w)
|
|
|
668 {
|
|
272
|
669 Lisp_Object window;
|
|
0
|
670
|
|
|
671 XSETWINDOW (window, w);
|
|
|
672 x_scrollbar_loop (X_SET_SCROLLBAR_POINTER, window, find_window_mirror (w),
|
|
|
673 0, (Window) NULL);
|
|
|
674 }
|
|
|
675
|
|
|
676 /* Make sure that all scrollbars on frame are up-to-date. Called
|
|
|
677 directly from x_set_frame_properties in frame-x.c*/
|
|
|
678 void
|
|
|
679 x_update_frame_scrollbars (struct frame *f)
|
|
|
680 {
|
|
|
681 /* Consider this code to be "in_display" so that we abort() if Fsignal()
|
|
|
682 gets called. */
|
|
|
683 in_display++;
|
|
|
684 x_scrollbar_loop (X_UPDATE_FRAME_SCROLLBARS, f->root_window, f->root_mirror,
|
|
|
685 0, (Window) NULL);
|
|
|
686 in_display--;
|
|
|
687 if (in_display < 0) abort ();
|
|
|
688 }
|
|
|
689
|
|
|
690 #ifdef MEMORY_USAGE_STATS
|
|
|
691
|
|
|
692 static int
|
|
|
693 x_compute_scrollbar_instance_usage (struct device *d,
|
|
|
694 struct scrollbar_instance *inst,
|
|
|
695 struct overhead_stats *ovstats)
|
|
|
696 {
|
|
|
697 int total = 0;
|
|
|
698
|
|
|
699 while (inst)
|
|
|
700 {
|
|
|
701 struct x_scrollbar_data *data =
|
|
|
702 (struct x_scrollbar_data *) inst->scrollbar_data;
|
|
|
703
|
|
|
704 total += malloced_storage_size (data, sizeof (*data), ovstats);
|
|
|
705 total += malloced_storage_size (data->name, 1 + strlen (data->name),
|
|
|
706 ovstats);
|
|
|
707 inst = inst->next;
|
|
|
708 }
|
|
|
709
|
|
|
710 return total;
|
|
|
711 }
|
|
|
712
|
|
|
713 #endif /* MEMORY_USAGE_STATS */
|
|
|
714
|
|
|
715
|
|
|
716 /************************************************************************/
|
|
|
717 /* initialization */
|
|
|
718 /************************************************************************/
|
|
|
719
|
|
|
720 void
|
|
|
721 console_type_create_scrollbar_x (void)
|
|
|
722 {
|
|
102
|
723 CONSOLE_HAS_METHOD (x, inhibit_scrollbar_slider_size_change);
|
|
0
|
724 CONSOLE_HAS_METHOD (x, free_scrollbar_instance);
|
|
|
725 CONSOLE_HAS_METHOD (x, release_scrollbar_instance);
|
|
|
726 CONSOLE_HAS_METHOD (x, create_scrollbar_instance);
|
|
|
727 CONSOLE_HAS_METHOD (x, update_scrollbar_instance_values);
|
|
|
728 CONSOLE_HAS_METHOD (x, update_scrollbar_instance_status);
|
|
|
729 CONSOLE_HAS_METHOD (x, scrollbar_pointer_changed_in_window);
|
|
|
730 #ifdef MEMORY_USAGE_STATS
|
|
|
731 CONSOLE_HAS_METHOD (x, compute_scrollbar_instance_usage);
|
|
|
732 #endif /* MEMORY_USAGE_STATS */
|
|
|
733 }
|
|
|
734
|
|
|
735 void
|
|
424
|
736 reinit_vars_of_scrollbar_x (void)
|
|
|
737 {
|
|
|
738 stupid_vertical_scrollbar_drag_hack = 1;
|
|
|
739 }
|
|
|
740
|
|
|
741 void
|
|
0
|
742 vars_of_scrollbar_x (void)
|
|
|
743 {
|
|
424
|
744 reinit_vars_of_scrollbar_x ();
|
|
|
745
|
|
0
|
746 #if defined (LWLIB_SCROLLBARS_LUCID)
|
|
|
747 Fprovide (intern ("lucid-scrollbars"));
|
|
|
748 #elif defined (LWLIB_SCROLLBARS_MOTIF)
|
|
|
749 Fprovide (intern ("motif-scrollbars"));
|
|
|
750 #elif defined (LWLIB_SCROLLBARS_ATHENA)
|
|
|
751 Fprovide (intern ("athena-scrollbars"));
|
|
|
752 #endif
|
|
|
753 }
|
