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