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comparison lwlib/lwlib-Xaw.c @ 0:376386a54a3c r19-14

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date Mon, 13 Aug 2007 08:45:50 +0200
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1 /* The lwlib interface to Athena widgets.
2 Copyright (C) 1993, 1994 Free Software Foundation, Inc.
3
4 This file is part of the Lucid Widget Library.
5
6 The Lucid Widget Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 1, or (at your option)
9 any later version.
10
11 The Lucid Widget Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with GNU Emacs; see the file COPYING. If not, write to
18 the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
19
20 #include <stdio.h>
21
22 #include "lwlib-Xaw.h"
23
24 #include <X11/StringDefs.h>
25 #include <X11/IntrinsicP.h>
26 #include <X11/CoreP.h>
27 #include <X11/Shell.h>
28
29 #ifdef SCROLLBARS_ATHENA
30 #include <X11/Xaw/Scrollbar.h>
31 #endif
32 #ifdef DIALOGS_ATHENA
33 #include <X11/Xaw/Dialog.h>
34 #include <X11/Xaw/Form.h>
35 #include <X11/Xaw/Command.h>
36 #include <X11/Xaw/Label.h>
37 #endif
38
39 #include <X11/Xatom.h>
40
41 static void xaw_generic_callback (Widget, XtPointer, XtPointer);
42
43
44 Boolean
45 lw_xaw_widget_p (Widget widget)
46 {
47 return (0
48 #ifdef SCROLLBARS_ATHENA
49 || XtIsSubclass (widget, scrollbarWidgetClass)
50 #endif
51 #ifdef DIALOGS_ATHENA
52 || XtIsSubclass (widget, dialogWidgetClass)
53 #endif
54 );
55 }
56
57 #ifdef SCROLLBARS_ATHENA
58 static void
59 xaw_update_scrollbar (widget_instance *instance, Widget widget,
60 widget_value *val)
61 {
62 if (val->scrollbar_data)
63 {
64 scrollbar_values *data = val->scrollbar_data;
65 float widget_shown, widget_topOfThumb;
66 float new_shown, new_topOfThumb;
67
68 /*
69 * First size and position the scrollbar widget.
70 */
71 XtVaSetValues (widget,
72 XtNx, data->scrollbar_x,
73 XtNy, data->scrollbar_y,
74 XtNwidth, data->scrollbar_width,
75 XtNheight, data->scrollbar_height,
76 0);
77
78 /*
79 * Now the size the scrollbar's slider.
80 */
81
82 XtVaGetValues (widget,
83 XtNtopOfThumb, &widget_topOfThumb,
84 XtNshown, &widget_shown,
85 0);
86
87 new_shown = (double) data->slider_size /
88 (double) (data->maximum - data->minimum);
89
90 new_topOfThumb = (double) (data->slider_position - data->minimum) /
91 (double) (data->maximum - data->minimum);
92
93 if (new_shown > 1.0)
94 new_shown = 1.0;
95 if (new_shown < 0)
96 new_shown = 0;
97
98 if (new_topOfThumb > 1.0)
99 new_topOfThumb = 1.0;
100 if (new_topOfThumb < 0)
101 new_topOfThumb = 0;
102
103 if (new_shown != widget_shown || new_topOfThumb != widget_topOfThumb)
104 XawScrollbarSetThumb (widget, new_topOfThumb, new_shown);
105 }
106 }
107 #endif /* SCROLLBARS_ATHENA */
108
109 void
110 xaw_update_one_widget (widget_instance *instance, Widget widget,
111 widget_value *val, Boolean deep_p)
112 {
113 if (0)
114 ;
115 #ifdef SCROLLBARS_ATHENA
116 else if (XtIsSubclass (widget, scrollbarWidgetClass))
117 {
118 xaw_update_scrollbar (instance, widget, val);
119 }
120 #endif
121 #ifdef DIALOGS_ATHENA
122 else if (XtIsSubclass (widget, dialogWidgetClass))
123 {
124 XtVaSetValues (widget, XtNlabel, val->contents->value, 0);
125 }
126 else if (XtIsSubclass (widget, commandWidgetClass))
127 {
128 Dimension bw = 0;
129 XtVaGetValues (widget, XtNborderWidth, &bw, 0);
130 if (bw == 0)
131 /* Don't let buttons end up with 0 borderwidth, that's ugly...
132 Yeah, all this should really be done through app-defaults files
133 or fallback resources, but that's a whole different can of worms
134 that I don't feel like opening right now. Making Athena widgets
135 not look like shit is just entirely too much work.
136 */
137 XtVaSetValues (widget, XtNborderWidth, 1, 0);
138
139 XtVaSetValues (widget,
140 XtNlabel, val->value,
141 XtNsensitive, val->enabled,
142 /* Force centered button text. Se above. */
143 XtNjustify, XtJustifyCenter,
144 0);
145
146 XtRemoveAllCallbacks (widget, XtNcallback);
147 XtAddCallback (widget, XtNcallback, xaw_generic_callback, instance);
148 }
149 #endif
150 }
151
152 void
153 xaw_update_one_value (widget_instance *instance, Widget widget,
154 widget_value *val)
155 {
156 /* This function is not used by the scrollbars and those are the only
157 Athena widget implemented at the moment so do nothing. */
158 return;
159 }
160
161 void
162 xaw_destroy_instance (widget_instance *instance)
163 {
164 #ifdef DIALOGS_ATHENA
165 if (XtIsSubclass (instance->widget, dialogWidgetClass))
166 /* Need to destroy the Shell too. */
167 XtDestroyWidget (XtParent (instance->widget));
168 else
169 #endif
170 XtDestroyWidget (instance->widget);
171 }
172
173 void
174 xaw_popup_menu (Widget widget, XEvent *event)
175 {
176 /* An Athena menubar has not been implemented. */
177 return;
178 }
179
180 void
181 xaw_pop_instance (widget_instance *instance, Boolean up)
182 {
183 Widget widget = instance->widget;
184
185 if (up)
186 {
187 #ifdef DIALOGS_ATHENA
188 if (XtIsSubclass (widget, dialogWidgetClass))
189 {
190 /* For dialogs, we need to call XtPopup on the parent instead
191 of calling XtManageChild on the widget.
192 Also we need to hack the shell's WM_PROTOCOLS to get it to
193 understand what the close box is supposed to do!!
194 */
195 Display *dpy = XtDisplay (widget);
196 Widget shell = XtParent (widget);
197 Atom props [2];
198 int i = 0;
199 props [i++] = XInternAtom (dpy, "WM_DELETE_WINDOW", False);
200 XChangeProperty (dpy, XtWindow (shell),
201 XInternAtom (dpy, "WM_PROTOCOLS", False),
202 XA_ATOM, 32, PropModeAppend,
203 (unsigned char *) props, i);
204
205 /* Center the widget in its parent. Why isn't this kind of crap
206 done automatically? I thought toolkits were supposed to make
207 life easier?
208 */
209 {
210 unsigned int x, y, w, h;
211 Widget topmost = instance->parent;
212 w = shell->core.width;
213 h = shell->core.height;
214 while (topmost->core.parent && XtIsRealized (topmost->core.parent))
215 topmost = topmost->core.parent;
216 if (topmost->core.width < w) x = topmost->core.x;
217 else x = topmost->core.x + ((topmost->core.width - w) / 2);
218 if (topmost->core.height < h) y = topmost->core.y;
219 else y = topmost->core.y + ((topmost->core.height - h) / 2);
220 XtMoveWidget (shell, x, y);
221 }
222
223 /* Finally, pop it up. */
224 XtPopup (shell, XtGrabNonexclusive);
225 }
226 else
227 #endif /* DIALOGS_ATHENA */
228 XtManageChild (widget);
229 }
230 else
231 {
232 #ifdef DIALOGS_ATHENA
233 if (XtIsSubclass (widget, dialogWidgetClass))
234 XtUnmanageChild (XtParent (widget));
235 else
236 #endif
237 XtUnmanageChild (widget);
238 }
239 }
240
241
242 #ifdef DIALOGS_ATHENA
243 /* Dialog boxes */
244
245 static char overrideTrans[] =
246 "<Message>WM_PROTOCOLS: lwlib_delete_dialog()";
247 static XtActionProc wm_delete_window (Widget shell, XtPointer closure,
248 XtPointer call_data);
249 static XtActionsRec xaw_actions [] = {
250 {"lwlib_delete_dialog", (XtActionProc) wm_delete_window}
251 };
252 static Boolean actions_initted = False;
253
254 static Widget
255 make_dialog (CONST char* name, Widget parent, Boolean pop_up_p,
256 CONST char* shell_title, CONST char* icon_name,
257 Boolean text_input_slot,
258 Boolean radio_box, Boolean list,
259 int left_buttons, int right_buttons)
260 {
261 Arg av [20];
262 int ac = 0;
263 int i, bc;
264 char button_name [255];
265 Widget shell;
266 Widget dialog;
267 Widget button;
268 XtTranslations override;
269
270 if (! pop_up_p) abort (); /* not implemented */
271 if (text_input_slot) abort (); /* not implemented */
272 if (radio_box) abort (); /* not implemented */
273 if (list) abort (); /* not implemented */
274
275 if (! actions_initted)
276 {
277 XtAppContext app = XtWidgetToApplicationContext (parent);
278 XtAppAddActions (app, xaw_actions,
279 sizeof (xaw_actions) / sizeof (xaw_actions[0]));
280 actions_initted = True;
281 }
282
283 override = XtParseTranslationTable (overrideTrans);
284
285 ac = 0;
286 XtSetArg (av[ac], XtNtitle, shell_title); ac++;
287 XtSetArg (av[ac], XtNallowShellResize, True); ac++;
288 XtSetArg (av[ac], XtNtransientFor, parent); ac++;
289 shell = XtCreatePopupShell ("dialog", transientShellWidgetClass,
290 parent, av, ac);
291 XtOverrideTranslations (shell, override);
292
293 ac = 0;
294 dialog = XtCreateManagedWidget (name, dialogWidgetClass, shell, av, ac);
295
296 bc = 0;
297 button = 0;
298 for (i = 0; i < left_buttons; i++)
299 {
300 ac = 0;
301 XtSetArg (av [ac], XtNfromHoriz, button); ac++;
302 XtSetArg (av [ac], XtNleft, XtChainLeft); ac++;
303 XtSetArg (av [ac], XtNright, XtChainLeft); ac++;
304 XtSetArg (av [ac], XtNtop, XtChainBottom); ac++;
305 XtSetArg (av [ac], XtNbottom, XtChainBottom); ac++;
306 XtSetArg (av [ac], XtNresizable, True); ac++;
307 sprintf (button_name, "button%d", ++bc);
308 button = XtCreateManagedWidget (button_name, commandWidgetClass,
309 dialog, av, ac);
310 }
311 if (right_buttons)
312 {
313 /* Create a separator
314
315 I want the separator to take up the slack between the buttons on
316 the right and the buttons on the left (that is I want the buttons
317 after the separator to be packed against the right edge of the
318 window) but I can't seem to make it do it.
319 */
320 ac = 0;
321 XtSetArg (av [ac], XtNfromHoriz, button); ac++;
322 /* XtSetArg (av [ac], XtNfromVert, XtNameToWidget (dialog, "label")); ac++; */
323 XtSetArg (av [ac], XtNleft, XtChainLeft); ac++;
324 XtSetArg (av [ac], XtNright, XtChainRight); ac++;
325 XtSetArg (av [ac], XtNtop, XtChainBottom); ac++;
326 XtSetArg (av [ac], XtNbottom, XtChainBottom); ac++;
327 XtSetArg (av [ac], XtNlabel, ""); ac++;
328 XtSetArg (av [ac], XtNwidth, 30); ac++; /* #### aaack!! */
329 XtSetArg (av [ac], XtNborderWidth, 0); ac++;
330 XtSetArg (av [ac], XtNshapeStyle, XmuShapeRectangle); ac++;
331 XtSetArg (av [ac], XtNresizable, False); ac++;
332 XtSetArg (av [ac], XtNsensitive, False); ac++;
333 button = XtCreateManagedWidget ("separator",
334 /* labelWidgetClass, */
335 /* This has to be Command to fake out
336 the Dialog widget... */
337 commandWidgetClass,
338 dialog, av, ac);
339 }
340 for (i = 0; i < right_buttons; i++)
341 {
342 ac = 0;
343 XtSetArg (av [ac], XtNfromHoriz, button); ac++;
344 XtSetArg (av [ac], XtNleft, XtChainRight); ac++;
345 XtSetArg (av [ac], XtNright, XtChainRight); ac++;
346 XtSetArg (av [ac], XtNtop, XtChainBottom); ac++;
347 XtSetArg (av [ac], XtNbottom, XtChainBottom); ac++;
348 XtSetArg (av [ac], XtNresizable, True); ac++;
349 sprintf (button_name, "button%d", ++bc);
350 button = XtCreateManagedWidget (button_name, commandWidgetClass,
351 dialog, av, ac);
352 }
353
354 return dialog;
355 }
356
357 Widget
358 xaw_create_dialog (widget_instance* instance)
359 {
360 char *name = instance->info->type;
361 Widget parent = instance->parent;
362 Widget widget;
363 Boolean pop_up_p = instance->pop_up_p;
364 CONST char *shell_name = 0;
365 CONST char *icon_name = 0;
366 Boolean text_input_slot = False;
367 Boolean radio_box = False;
368 Boolean list = False;
369 int total_buttons;
370 int left_buttons = 0;
371 int right_buttons = 1;
372
373 switch (name [0]) {
374 case 'E': case 'e':
375 icon_name = "dbox-error";
376 shell_name = "Error";
377 break;
378
379 case 'I': case 'i':
380 icon_name = "dbox-info";
381 shell_name = "Information";
382 break;
383
384 case 'L': case 'l':
385 list = True;
386 icon_name = "dbox-question";
387 shell_name = "Prompt";
388 break;
389
390 case 'P': case 'p':
391 text_input_slot = True;
392 icon_name = "dbox-question";
393 shell_name = "Prompt";
394 break;
395
396 case 'Q': case 'q':
397 icon_name = "dbox-question";
398 shell_name = "Question";
399 break;
400 }
401
402 total_buttons = name [1] - '0';
403
404 if (name [3] == 'T' || name [3] == 't')
405 {
406 text_input_slot = False;
407 radio_box = True;
408 }
409 else if (name [3])
410 right_buttons = name [4] - '0';
411
412 left_buttons = total_buttons - right_buttons;
413
414 widget = make_dialog (name, parent, pop_up_p,
415 shell_name, icon_name, text_input_slot, radio_box,
416 list, left_buttons, right_buttons);
417
418 return widget;
419 }
420 #endif /* DIALOGS_ATHENA */
421
422
423 static void
424 xaw_generic_callback (Widget widget, XtPointer closure, XtPointer call_data)
425 {
426 widget_instance *instance = (widget_instance *) closure;
427 Widget instance_widget;
428 LWLIB_ID id;
429 XtPointer user_data;
430
431 lw_internal_update_other_instances (widget, closure, call_data);
432
433 if (! instance)
434 return;
435 if (widget->core.being_destroyed)
436 return;
437
438 instance_widget = instance->widget;
439 if (!instance_widget)
440 return;
441
442 id = instance->info->id;
443
444 #if 0
445 user_data = NULL;
446 XtVaGetValues (widget, XtNuserData, &user_data, 0);
447 #else
448 /* Damn! Athena doesn't give us a way to hang our own data on the
449 buttons, so we have to go find it... I guess this assumes that
450 all instances of a button have the same call data. */
451 {
452 widget_value *val = instance->info->val->contents;
453 char *name = XtName (widget);
454 while (val)
455 {
456 if (val->name && !strcmp (val->name, name))
457 break;
458 val = val->next;
459 }
460 if (! val) abort ();
461 user_data = val->call_data;
462 }
463 #endif
464
465 if (instance->info->selection_cb)
466 instance->info->selection_cb (widget, id, user_data);
467 }
468
469 #ifdef DIALOGS_ATHENA
470
471 static XtActionProc
472 wm_delete_window (Widget shell, XtPointer closure, XtPointer call_data)
473 {
474 LWLIB_ID id;
475 Widget *kids = 0;
476 Widget widget;
477 if (! XtIsSubclass (shell, shellWidgetClass))
478 abort ();
479 XtVaGetValues (shell, XtNchildren, &kids, 0);
480 if (!kids || !*kids)
481 abort ();
482 widget = kids [0];
483 if (! XtIsSubclass (widget, dialogWidgetClass))
484 abort ();
485 id = lw_get_widget_id (widget);
486 if (! id) abort ();
487
488 {
489 widget_info *info = lw_get_widget_info (id);
490 if (! info) abort ();
491 if (info->selection_cb)
492 info->selection_cb (widget, id, (XtPointer) -1);
493 }
494
495 lw_destroy_all_widgets (id);
496 return NULL;
497 }
498
499 #endif /* DIALOGS_ATHENA */
500
501
502 /* Scrollbars */
503
504 #ifdef SCROLLBARS_ATHENA
505 static void
506 xaw_scrollbar_scroll (Widget widget, XtPointer closure, XtPointer call_data)
507 {
508 widget_instance *instance = (widget_instance *) closure;
509 LWLIB_ID id;
510 scroll_event event_data;
511
512 if (!instance || widget->core.being_destroyed)
513 return;
514
515 id = instance->info->id;
516 event_data.slider_value = (int) call_data;
517 event_data.time = 0;
518
519 if ((int) call_data > 0)
520 event_data.action = SCROLLBAR_PAGE_DOWN;
521 else
522 event_data.action = SCROLLBAR_PAGE_UP;
523
524 if (instance->info->pre_activate_cb)
525 instance->info->pre_activate_cb (widget, id, (XtPointer) &event_data);
526 }
527
528 static void
529 xaw_scrollbar_jump (Widget widget, XtPointer closure, XtPointer call_data)
530 {
531 widget_instance *instance = (widget_instance *) closure;
532 LWLIB_ID id;
533 scroll_event event_data;
534 scrollbar_values *val =
535 (scrollbar_values *) instance->info->val->scrollbar_data;
536 float percent;
537
538 if (!instance || widget->core.being_destroyed)
539 return;
540
541 id = instance->info->id;
542
543 percent = * (float *) call_data;
544 event_data.slider_value =
545 (int) (percent * (float) (val->maximum - val->minimum)) + val->minimum;
546
547 event_data.time = 0;
548 event_data.action = SCROLLBAR_DRAG;
549
550 if (instance->info->pre_activate_cb)
551 instance->info->pre_activate_cb (widget, id, (XtPointer) &event_data);
552 }
553
554 static Widget
555 xaw_create_scrollbar (widget_instance *instance, int vertical)
556 {
557 Arg av[20];
558 int ac = 0;
559 Widget scrollbar;
560
561 /* #### This is tacked onto the with and height and completely
562 screws our geometry management. We should probably make the
563 top-level aware of this so that people could have a border but so
564 few people use the Athena scrollbar now that it really isn't
565 worth the effort, at least not at the moment. */
566 XtSetArg (av [ac], XtNborderWidth, 0); ac++;
567 if (vertical)
568 {
569 XtSetArg (av [ac], XtNorientation, XtorientVertical); ac++;
570 }
571 else
572 {
573 XtSetArg (av [ac], XtNorientation, XtorientHorizontal); ac++;
574 }
575
576 scrollbar =
577 XtCreateWidget (instance->info->name, scrollbarWidgetClass,
578 instance->parent, av, ac);
579
580 XtRemoveAllCallbacks (scrollbar, "jumpProc");
581 XtRemoveAllCallbacks (scrollbar, "scrollProc");
582
583 XtAddCallback (scrollbar, "jumpProc", xaw_scrollbar_jump,
584 (XtPointer) instance);
585 XtAddCallback (scrollbar, "scrollProc", xaw_scrollbar_scroll,
586 (XtPointer) instance);
587
588 return scrollbar;
589 }
590
591 static Widget
592 xaw_create_vertical_scrollbar (widget_instance *instance)
593 {
594 return xaw_create_scrollbar (instance, 1);
595 }
596
597 static Widget
598 xaw_create_horizontal_scrollbar (widget_instance *instance)
599 {
600 return xaw_create_scrollbar (instance, 0);
601 }
602 #endif /* SCROLLBARS_ATHENA */
603
604 widget_creation_entry
605 xaw_creation_table [] =
606 {
607 #ifdef SCROLLBARS_ATHENA
608 {"vertical-scrollbar", xaw_create_vertical_scrollbar},
609 {"horizontal-scrollbar", xaw_create_horizontal_scrollbar},
610 #endif
611 {NULL, NULL}
612 };