xemacs-beta / lwlib / lwlib-Xaw.c

  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
/* The lwlib interface to Athena widgets.
   Copyright (C) 1993, 1994 Free Software Foundation, Inc.

This file is part of the Lucid Widget Library.

The Lucid Widget Library is free software; you can redistribute it and/or 
modify it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 1, or (at your option)
any later version.

The Lucid Widget Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of 
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with XEmacs; see the file COPYING.  If not, write to
the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */

#include <config.h>
#include <stdio.h>

#ifdef STDC_HEADERS
#include <stdlib.h>
#endif

#include "lwlib-Xaw.h"

#include <X11/StringDefs.h>
#include <X11/IntrinsicP.h>
#include <X11/CoreP.h>
#include <X11/Shell.h>

#ifdef LWLIB_SCROLLBARS_ATHENA
#include <X11/Xaw/Scrollbar.h>
#endif
#ifdef LWLIB_DIALOGS_ATHENA
#include <X11/Xaw/Dialog.h>
#include <X11/Xaw/Form.h>
#include <X11/Xaw/Command.h>
#include <X11/Xaw/Label.h>
#endif

#include <X11/Xatom.h>

static void xaw_generic_callback (Widget, XtPointer, XtPointer);


Boolean
lw_xaw_widget_p (Widget widget)
{
  return (0
#ifdef LWLIB_SCROLLBARS_ATHENA
	  || XtIsSubclass (widget, scrollbarWidgetClass)
#endif
#ifdef LWLIB_DIALOGS_ATHENA
	  || XtIsSubclass (widget, dialogWidgetClass)
#endif
	  );
}

#ifdef LWLIB_SCROLLBARS_ATHENA
static void
xaw_update_scrollbar (widget_instance *instance, Widget widget,
		      widget_value *val)
{
  if (val->scrollbar_data)
    {
      scrollbar_values *data = val->scrollbar_data;
      float widget_shown, widget_topOfThumb;
      float new_shown, new_topOfThumb;
      Arg al [10];

      /* First size and position the scrollbar widget. */
      XtSetArg (al [0], XtNx,      data->scrollbar_x);
      XtSetArg (al [1], XtNy,      data->scrollbar_y);
      XtSetArg (al [2], XtNwidth,  data->scrollbar_width);
      XtSetArg (al [3], XtNheight, data->scrollbar_height);
      XtSetValues (widget, al, 4);

      /* Now size the scrollbar's slider. */
      XtSetArg (al [0], XtNtopOfThumb, &widget_topOfThumb);
      XtSetArg (al [1], XtNshown, &widget_shown);
      XtGetValues (widget, al, 2);

      new_shown = (double) data->slider_size /
	(double) (data->maximum - data->minimum);

      new_topOfThumb = (double) (data->slider_position - data->minimum) /
	(double) (data->maximum - data->minimum);

      if (new_shown > 1.0)
	new_shown = 1.0;
      else if (new_shown < 0)
	new_shown = 0;

      if (new_topOfThumb > 1.0)
	new_topOfThumb = 1.0;
      else if (new_topOfThumb < 0)
	new_topOfThumb = 0;

      if (new_shown != widget_shown || new_topOfThumb != widget_topOfThumb)
	XawScrollbarSetThumb (widget, new_topOfThumb, new_shown);
    }
}
#endif /* LWLIB_SCROLLBARS_ATHENA */

void
xaw_update_one_widget (widget_instance *instance, Widget widget,
		       widget_value *val, Boolean deep_p)
{
  if (0)
    ;
#ifdef LWLIB_SCROLLBARS_ATHENA
  else if (XtIsSubclass (widget, scrollbarWidgetClass))
    {
      xaw_update_scrollbar (instance, widget, val);
    }
#endif
#ifdef LWLIB_DIALOGS_ATHENA
  else if (XtIsSubclass (widget, dialogWidgetClass))
      {
	Arg al [1];
	XtSetArg (al [0], XtNlabel, val->contents->value);
	XtSetValues (widget, al, 1);
      }
  else if (XtIsSubclass (widget, commandWidgetClass))
    {
      Dimension bw = 0;
      Arg al [3];
      XtSetArg (al [0], XtNborderWidth, &bw);
      XtGetValues (widget, al, 1);

#ifndef LWLIB_DIALOGS_ATHENA3D
      if (bw == 0)
	/* Don't let buttons end up with 0 borderwidth, that's ugly...
	   Yeah, all this should really be done through app-defaults files
	   or fallback resources, but that's a whole different can of worms
	   that I don't feel like opening right now.  Making Athena widgets
	   not look like shit is just entirely too much work.
	 */
	{
	  XtSetArg (al [0], XtNborderWidth, 1);
	  XtSetValues (widget, al, 1);
	}
#endif /* ! LWLIB_DIALOGS_ATHENA3D */

      XtSetArg (al [0], XtNlabel,     val->value);
      XtSetArg (al [1], XtNsensitive, val->enabled);
      /* Force centered button text.  See above. */
      XtSetArg (al [2], XtNjustify, XtJustifyCenter);
      XtSetValues (widget, al, 3);

      XtRemoveAllCallbacks (widget, XtNcallback);
      XtAddCallback (widget, XtNcallback, xaw_generic_callback, instance);
    }
#endif /* LWLIB_DIALOGS_ATHENA */
}

void
xaw_update_one_value (widget_instance *instance, Widget widget,
		      widget_value *val)
{
  /* This function is not used by the scrollbars and those are the only
     Athena widget implemented at the moment so do nothing. */
  return;
}

void
xaw_destroy_instance (widget_instance *instance)
{
#ifdef LWLIB_DIALOGS_ATHENA
  if (XtIsSubclass (instance->widget, dialogWidgetClass))
    /* Need to destroy the Shell too. */
    XtDestroyWidget (XtParent (instance->widget));
  else
#endif
    XtDestroyWidget (instance->widget);
}

void
xaw_popup_menu (Widget widget, XEvent *event)
{
  /* An Athena menubar has not been implemented. */
  return;
}

void
xaw_pop_instance (widget_instance *instance, Boolean up)
{
  Widget widget = instance->widget;

  if (up)
    {
#ifdef LWLIB_DIALOGS_ATHENA
      if (XtIsSubclass (widget, dialogWidgetClass))
	{
	  /* For dialogs, we need to call XtPopup on the parent instead
	     of calling XtManageChild on the widget.
	     Also we need to hack the shell's WM_PROTOCOLS to get it to
	     understand what the close box is supposed to do!!
	   */
	  Display *dpy = XtDisplay (widget);
	  Widget shell = XtParent (widget);
	  Atom props [2];
	  int i = 0;
	  props [i++] = XInternAtom (dpy, "WM_DELETE_WINDOW", False);
	  XChangeProperty (dpy, XtWindow (shell),
			   XInternAtom (dpy, "WM_PROTOCOLS", False),
			   XA_ATOM, 32, PropModeAppend,
			   (unsigned char *) props, i);

	  /* Center the widget in its parent.  Why isn't this kind of crap
	     done automatically?  I thought toolkits were supposed to make
	     life easier?
	   */
	  {
	    unsigned int x, y, w, h;
	    Widget topmost = instance->parent;
	    w = shell->core.width;
	    h = shell->core.height;
	    while (topmost->core.parent &&
		   XtIsRealized (topmost->core.parent) &&
		   /* HAVE_SESSION adds an unmapped parent widget that
		      we should ignore here. */
		   topmost->core.parent->core.mapped_when_managed)
	      topmost = topmost->core.parent;
	    if (topmost->core.width < w) x = topmost->core.x;
	    else x = topmost->core.x + ((topmost->core.width - w) / 2);
	    if (topmost->core.height < h) y = topmost->core.y;
	    else y = topmost->core.y + ((topmost->core.height - h) / 2);
	    XtMoveWidget (shell, x, y);
	  }

	  /* Finally, pop it up. */
	  XtPopup (shell, XtGrabNonexclusive);
	}
      else
#endif /* LWLIB_DIALOGS_ATHENA */
	XtManageChild (widget);
    }
  else
    {
#ifdef LWLIB_DIALOGS_ATHENA
      if (XtIsSubclass (widget, dialogWidgetClass))
	XtUnmanageChild (XtParent (widget));
      else
#endif
	XtUnmanageChild (widget);
    }
}


#ifdef LWLIB_DIALOGS_ATHENA
/* Dialog boxes */

static char overrideTrans[] =
	"<Message>WM_PROTOCOLS: lwlib_delete_dialog()";
static XtActionProc wm_delete_window (Widget shell, XtPointer closure,
				      XtPointer call_data);
static XtActionsRec xaw_actions [] = {
  {"lwlib_delete_dialog", (XtActionProc) wm_delete_window}
};
static Boolean actions_initted = False;

static Widget
make_dialog (CONST char* name, Widget parent, Boolean pop_up_p,
	     CONST char* shell_title, CONST char* icon_name,
             Boolean text_input_slot,
	     Boolean radio_box, Boolean list,
	     int left_buttons, int right_buttons)
{
  Arg av [20];
  int ac = 0;
  int i, bc;
  char button_name [255];
  Widget shell;
  Widget dialog;
  Widget button;
  XtTranslations override;

  if (! pop_up_p) abort (); /* not implemented */
  if (text_input_slot) abort (); /* not implemented */
  if (radio_box) abort (); /* not implemented */
  if (list) abort (); /* not implemented */

  if (! actions_initted)
    {
      XtAppContext app = XtWidgetToApplicationContext (parent);
      XtAppAddActions (app, xaw_actions,
		       sizeof (xaw_actions) / sizeof (xaw_actions[0]));
      actions_initted = True;
    }

  override = XtParseTranslationTable (overrideTrans);

  ac = 0;
  XtSetArg (av[ac], XtNtitle, shell_title);	ac++;
  XtSetArg (av[ac], XtNallowShellResize, True); ac++;
  XtSetArg (av[ac], XtNtransientFor, parent);	ac++;
  shell = XtCreatePopupShell ("dialog", transientShellWidgetClass,
			      parent, av, ac);
  XtOverrideTranslations (shell, override);

  ac = 0;
  dialog = XtCreateManagedWidget (name, dialogWidgetClass, shell, av, ac);

  bc = 0;
  button = 0;
  for (i = 0; i < left_buttons; i++)
    {
      ac = 0;
      XtSetArg (av [ac], XtNfromHoriz, button);     ac++;
      XtSetArg (av [ac], XtNleft,   XtChainLeft);   ac++;
      XtSetArg (av [ac], XtNright,  XtChainLeft);   ac++;
      XtSetArg (av [ac], XtNtop,    XtChainBottom); ac++;
      XtSetArg (av [ac], XtNbottom, XtChainBottom); ac++;
      XtSetArg (av [ac], XtNresizable, True);       ac++;
      sprintf (button_name, "button%d", ++bc);
      button = XtCreateManagedWidget (button_name, commandWidgetClass,
				      dialog, av, ac);
    }
  if (right_buttons)
    {
      /* Create a separator

	 I want the separator to take up the slack between the buttons on
	 the right and the buttons on the left (that is I want the buttons
	 after the separator to be packed against the right edge of the
	 window) but I can't seem to make it do it.  
       */
      ac = 0;
      XtSetArg (av [ac], XtNfromHoriz, button);	    ac++;
/*  XtSetArg (av [ac], XtNfromVert, XtNameToWidget (dialog, "label")); ac++; */
      XtSetArg (av [ac], XtNleft,   XtChainLeft);   ac++;
      XtSetArg (av [ac], XtNright,  XtChainRight);  ac++;
      XtSetArg (av [ac], XtNtop,    XtChainBottom); ac++;
      XtSetArg (av [ac], XtNbottom, XtChainBottom); ac++;
      XtSetArg (av [ac], XtNlabel, ""); ac++;
      XtSetArg (av [ac], XtNwidth, 30); ac++;	/* #### aaack!! */
      XtSetArg (av [ac], XtNborderWidth, 0); ac++;
      XtSetArg (av [ac], XtNshapeStyle, XmuShapeRectangle); ac++;
      XtSetArg (av [ac], XtNresizable, False); ac++;
      XtSetArg (av [ac], XtNsensitive, False); ac++;
      button = XtCreateManagedWidget ("separator",
				      /* labelWidgetClass, */
				      /* This has to be Command to fake out
					 the Dialog widget... */
				      commandWidgetClass,
				      dialog, av, ac);
    }
  for (i = 0; i < right_buttons; i++)
    {
      ac = 0;
      XtSetArg (av [ac], XtNfromHoriz, button);	    ac++;
      XtSetArg (av [ac], XtNleft,   XtChainRight);  ac++;
      XtSetArg (av [ac], XtNright,  XtChainRight);  ac++;
      XtSetArg (av [ac], XtNtop,    XtChainBottom); ac++;
      XtSetArg (av [ac], XtNbottom, XtChainBottom); ac++;
      XtSetArg (av [ac], XtNresizable, True);	    ac++;
      sprintf (button_name, "button%d", ++bc);
      button = XtCreateManagedWidget (button_name, commandWidgetClass,
				      dialog, av, ac);
    }

  return dialog;
}

Widget
xaw_create_dialog (widget_instance* instance)
{
  char *name = instance->info->type;
  Widget parent = instance->parent;
  Widget widget;
  Boolean pop_up_p = instance->pop_up_p;
  CONST char *shell_name = 0;
  CONST char *icon_name = 0;
  Boolean text_input_slot = False;
  Boolean radio_box = False;
  Boolean list = False;
  int total_buttons;
  int left_buttons = 0;
  int right_buttons = 1;

  switch (name [0]) {
  case 'E': case 'e':
    icon_name = "dbox-error";
    shell_name = "Error";
    break;

  case 'I': case 'i':
    icon_name = "dbox-info";
    shell_name = "Information";
    break;

  case 'L': case 'l':
    list = True;
    icon_name = "dbox-question";
    shell_name = "Prompt";
    break;

  case 'P': case 'p':
    text_input_slot = True;
    icon_name = "dbox-question";
    shell_name = "Prompt";
    break;

  case 'Q': case 'q':
    icon_name = "dbox-question";
    shell_name = "Question";
    break;
  }
  
  total_buttons = name [1] - '0';

  if (name [3] == 'T' || name [3] == 't')
    {
      text_input_slot = False;
      radio_box = True;
    }
  else if (name [3])
    right_buttons = name [4] - '0';
  
  left_buttons = total_buttons - right_buttons;
  
  widget = make_dialog (name, parent, pop_up_p,
			shell_name, icon_name, text_input_slot, radio_box,
			list, left_buttons, right_buttons);

  return widget;
}
#endif /* LWLIB_DIALOGS_ATHENA */


static void
xaw_generic_callback (Widget widget, XtPointer closure, XtPointer call_data)
{
  widget_instance *instance = (widget_instance *) closure;
  Widget instance_widget;
  LWLIB_ID id;
  XtPointer user_data;

  lw_internal_update_other_instances (widget, closure, call_data);

  if (! instance)
    return;
  if (widget->core.being_destroyed)
    return;

  instance_widget = instance->widget;
  if (!instance_widget)
    return;

  id = instance->info->id;

#if 0
  user_data = NULL;
  {
    Arg al [1];
    XtSetArg (al [0], XtNuserData, &user_data);
    XtGetValues (widget, al, 1);
  }
#else
  /* Damn!  Athena doesn't give us a way to hang our own data on the
     buttons, so we have to go find it...  I guess this assumes that
     all instances of a button have the same call data. */
  {
    widget_value *val = instance->info->val->contents;
    char *name = XtName (widget);
    while (val)
      {
	if (val->name && !strcmp (val->name, name))
	  break;
	val = val->next;
      }
    if (! val) abort ();
    user_data = val->call_data;
  }
#endif

  if (instance->info->selection_cb)
    instance->info->selection_cb (widget, id, user_data);
}

#ifdef LWLIB_DIALOGS_ATHENA

static XtActionProc
wm_delete_window (Widget shell, XtPointer closure, XtPointer call_data)
{
  LWLIB_ID id;
  Widget *kids = 0;
  Widget widget;
  Arg al [1];
  if (! XtIsSubclass (shell, shellWidgetClass))
    abort ();
  XtSetArg (al [0], XtNchildren, &kids);
  XtGetValues (shell, al, 1);
  if (!kids || !*kids)
    abort ();
  widget = kids [0];
  if (! XtIsSubclass (widget, dialogWidgetClass))
    abort ();
  id = lw_get_widget_id (widget);
  if (! id) abort ();

  {
    widget_info *info = lw_get_widget_info (id);
    if (! info) abort ();
    if (info->selection_cb)
      info->selection_cb (widget, id, (XtPointer) -1);
  }

  lw_destroy_all_widgets (id);
  return NULL;
}

#endif /* LWLIB_DIALOGS_ATHENA */


/* Scrollbars */

#ifdef LWLIB_SCROLLBARS_ATHENA
static void
xaw_scrollbar_scroll (Widget widget, XtPointer closure, XtPointer call_data)
{
  widget_instance *instance = (widget_instance *) closure;
  LWLIB_ID id;
  scroll_event event_data;

  if (!instance || widget->core.being_destroyed)
    return;

  id = instance->info->id;
  event_data.slider_value = (int) call_data;
  event_data.time = 0;

  if ((int) call_data > 0)
    /* event_data.action = SCROLLBAR_PAGE_DOWN;*/
    event_data.action = SCROLLBAR_LINE_DOWN;
  else
    /* event_data.action = SCROLLBAR_PAGE_UP;*/
    event_data.action = SCROLLBAR_LINE_UP;

  if (instance->info->pre_activate_cb)
    instance->info->pre_activate_cb (widget, id, (XtPointer) &event_data);
}

static void
xaw_scrollbar_jump (Widget widget, XtPointer closure, XtPointer call_data)
{
  widget_instance *instance = (widget_instance *) closure;
  LWLIB_ID id;
  scroll_event event_data;
  scrollbar_values *val =
    (scrollbar_values *) instance->info->val->scrollbar_data;
  float percent;

  if (!instance || widget->core.being_destroyed)
    return;

  id = instance->info->id;

  percent = * (float *) call_data;
  event_data.slider_value =
    (int) (percent * (float) (val->maximum - val->minimum)) + val->minimum;

  event_data.time = 0;
  event_data.action = SCROLLBAR_DRAG;

  if (instance->info->pre_activate_cb)
    instance->info->pre_activate_cb (widget, id, (XtPointer) &event_data);
}

static Widget
xaw_create_scrollbar (widget_instance *instance, int vertical)
{
  Arg av[10];
  int ac = 0;
  
  static XtCallbackRec jumpCallbacks[2] =
  { {xaw_scrollbar_jump, NULL}, {NULL, NULL} };
  
  static XtCallbackRec scrollCallbacks[2] =
  { {xaw_scrollbar_scroll, NULL}, {NULL, NULL} };

  jumpCallbacks[0].closure = scrollCallbacks[0].closure = (XtPointer) instance;

  /* #### This is tacked onto the with and height and completely
     screws our geometry management.  We should probably make the
     top-level aware of this so that people could have a border but so
     few people use the Athena scrollbar now that it really isn't
     worth the effort, at least not at the moment. */
  XtSetArg (av [ac], XtNborderWidth, 0); ac++;
  XtSetArg (av [ac], XtNorientation,
	    vertical ? XtorientVertical : XtorientHorizontal); ac++;
  XtSetArg (av [ac], "jumpProc",   jumpCallbacks);   ac++;
  XtSetArg (av [ac], "scrollProc", scrollCallbacks); ac++;

  return XtCreateWidget (instance->info->name, scrollbarWidgetClass,
			 instance->parent, av, ac);
}

static Widget
xaw_create_vertical_scrollbar (widget_instance *instance)
{
  return xaw_create_scrollbar (instance, 1);
}

static Widget
xaw_create_horizontal_scrollbar (widget_instance *instance)
{
  return xaw_create_scrollbar (instance, 0);
}
#endif /* LWLIB_SCROLLBARS_ATHENA */

widget_creation_entry
xaw_creation_table [] =
{
#ifdef LWLIB_SCROLLBARS_ATHENA
  {"vertical-scrollbar",	xaw_create_vertical_scrollbar},
  {"horizontal-scrollbar",	xaw_create_horizontal_scrollbar},
#endif
  {NULL, NULL}
};
Tip: Filter by directory path e.g. /media app.js to search for public/media/app.js.
Tip: Use camelCasing e.g. ProjME to search for ProjectModifiedEvent.java.
Tip: Filter by extension type e.g. /repo .js to search for all .js files in the /repo directory.
Tip: Separate your search with spaces e.g. /ssh pom.xml to search for src/ssh/pom.xml.
Tip: Use ↑ and ↓ arrow keys to navigate and return to view the file.
Tip: You can also navigate files with Ctrl+j (next) and Ctrl+k (previous) and view the file with Ctrl+o.
Tip: You can also navigate files with Alt+j (next) and Alt+k (previous) and view the file with Alt+o.