-
Notifications
You must be signed in to change notification settings - Fork 0
/
listshell.c
474 lines (399 loc) · 12.4 KB
/
listshell.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
/**** listshell.c ****/ /**** formatted with 4-column tabs ****/
/**********************************************************************
* Copyright (c) 1991 - 1996 Iris Computing Laboratories.
*
* This software is provided for demonstration purposes only. As
* freely-distributed, modifiable source code, this software carries
* absolutely no warranty. Iris Computing Laboratories disclaims
* all warranties for this software, including any implied warranties
* of merchantability and fitness, and shall not be liable for
* damages of any type resulting from its use.
* Permission to use, copy, modify, and distribute this source code
* for any purpose and without fee is hereby granted, provided that
* the above copyright and this permission notice appear in all copies
* and supporting documentation, and provided that Iris Computing
* Laboratories not be named in advertising or publicity pertaining
* to the redistribution of this software without specific, written
* prior permission.
**********************************************************************/
/**************************************************************************
A `ListShell' object is a Motif XmList widget in a shell. The
application can specify whether the pop-up shell should disappear
or stay active when the user selects an item from the list.
Because it's in a pop-up shell, the application must call the
list-shell realize function.
Sample usage:
#include "listshell.h"
...
...
void main(argc, argv)
int argc;
char *argv[];
{
void ListSelection(), ...;
Widget topLevel, ...;
ListShell list1, list2;
Arg args[10];
int i;
static char *seasons[] = {"Winter", "Spring", "Summer", "Fall", NULL};
XtAppContext app;
topLevel = XtAppInitialize(&app, "ApplicationClass",
(XrmOptionDescList) NULL, 0,
&argc, argv, (String *) NULL, (ArgList) NULL, 0);
list1 = listShell_create(topLevel, "ApplicationClass", "listShell1",
seasons, XmSTRING_DEFAULT_CHARSET, 0, 4, listShell_STAY_UP,
listShell_WIN_MGR_DECOR);
listShell_add_callback(list1, ListSelection, 1);
list2 = listShell_create(topLevel, "ApplicationClass", "listShell2",
seasons, XmSTRING_DEFAULT_CHARSET, 0, 2, listShell_NO_STAY_UP,
listShell_MIN_WIN_MGR_DECOR);
listShell_add_callback(list2, ListSelection, 2);
...
...
XtRealizeWidget(topLevel);
listShell_realize(list1);
listShell_realize(list2);
...
...
**************************************************************************/
#include "listshell.h"
/*
Private callback functions:
*/
static void ListShellDismiss();
/*
Private support functions:
*/
static int listShell_allocate_list();
/*
Public functions:
*/
/*
listShell_create() creates a `ListShell' object. The
application can specify the type of window manager
behavior, among other parameters.
*/
/*ARGSUSED*/
ListShell listShell_create(ref_wid, app_class, instance_name,
items, char_set, num_cols, num_rows, stay_up_behavior,
win_mgr_behavior)
Widget ref_wid;
char *app_class;
char *instance_name;
char *items[];
XmStringCharSet char_set;
int num_cols, num_rows;
int stay_up_behavior, win_mgr_behavior;
{
Arg args[10];
int i;
ListShell lObject;
#ifdef RESTRICT_ACTION_AREA
Dimension height, margin_height;
#endif
if (!(lObject = (ListShell) XtMalloc((Cardinal) sizeof(_ListShell))))
return NULL;
lObject->self = lObject;
i = 0;
XtSetArg(args[i], XmNallowShellResize, (XtArgVal) True); i++;
XtSetArg(args[i], XmNmappedWhenManaged, (XtArgVal) False); i++;
if (win_mgr_behavior == listShell_WIN_MGR_DECOR)
lObject->listShell = XtCreatePopupShell(instance_name,
topLevelShellWidgetClass, ref_wid, args, i);
else
lObject->listShell = XtCreatePopupShell(instance_name,
transientShellWidgetClass, ref_wid, args, i);
/*
instances have precedence over classes:
*/
lObject->instance = XtCreateManagedWidget(instance_name,
xmFrameWidgetClass, lObject->listShell, NULL, 0);
lObject->class = XtCreateManagedWidget("ListShell",
xmFrameWidgetClass, lObject->instance, NULL, 0);
i = 0;
XtSetArg(args[i], XmNsashWidth, (XtArgVal) 1); i++;
XtSetArg(args[i], XmNsashHeight, (XtArgVal) 1); i++;
XtSetArg(args[i], XmNsashIndent, (XtArgVal) -1); i++;
lObject->listPane = XtCreateManagedWidget("listPane",
xmPanedWindowWidgetClass, lObject->class, args, i);
lObject->listPort = XtCreateManagedWidget("listPort",
xmScrolledWindowWidgetClass, lObject->listPane, NULL, 0);
lObject->is_active = FALSE;
lObject->num_items = 0;
lObject->list_items = NULL;
i = 0;
if (items) {
if (listShell_allocate_list(lObject, items, char_set)) {
XtSetArg(args[i], XmNitems, (XtArgVal) lObject->list_items); i++;
XtSetArg(args[i], XmNitemCount, (XtArgVal) lObject->num_items); i++;
}
}
if (num_rows > 0) {
XtSetArg(args[i], XmNvisibleItemCount, (XtArgVal) num_rows); i++;
}
/* XtSetArg(args[i], XmNlistSizePolicy, (XtArgVal) XmRESIZE_IF_POSSIBLE); i++;*/
/* XtSetArg(args[i], XmNselectionPolicy, (XtArgVal) XmBROWSE_SELECT); i++;*/
/* XtSetArg(args[i], XmNtraversalOn, (XtArgVal) False); i++;*/
lObject->listList = XtCreateManagedWidget("listList",
xmListWidgetClass, lObject->listPort, args, i);
if (stay_up_behavior != listShell_STAY_UP)
XtAddCallback(lObject->listList, XmNbrowseSelectionCallback,
ListShellDismiss, (XtPointer) lObject);
lObject->stay_up_behavior = stay_up_behavior;
i = 0;
XtSetArg(args[i], XmNadjustLast, (XtArgVal) False); i++;
XtSetArg(args[i], XmNfractionBase, 3); i++;
lObject->listAction = XtCreateManagedWidget("listAction",
xmFormWidgetClass, lObject->listPane, args, i);
i = 0;
XtSetArg(args[i], XmNlabelString,
XmStringCreateLtoR("Dismiss", char_set)); i++;
XtSetArg(args[i], XmNtopAttachment, (XtArgVal) XmATTACH_FORM); i++;
XtSetArg(args[i], XmNbottomAttachment, (XtArgVal) XmATTACH_FORM); i++;
XtSetArg(args[i], XmNleftAttachment, (XtArgVal) XmATTACH_POSITION); i++;
XtSetArg(args[i], XmNleftPosition, (XtArgVal) 1); i++;
XtSetArg(args[i], XmNrightAttachment, (XtArgVal) XmATTACH_POSITION); i++;
XtSetArg(args[i], XmNrightPosition, (XtArgVal) 2); i++;
XtSetArg(args[i], XmNshowAsDefault, (XtArgVal) True); i++;
lObject->listDismissButton = XtCreateManagedWidget("listDismissButton",
xmPushButtonWidgetClass, lObject->listAction, args, i);
XtAddCallback(lObject->listDismissButton,
XmNactivateCallback, ListShellDismiss, (XtPointer) lObject);
if (num_cols > 0) {
XmFontList fontlist;
XmFontContext context;
i = 0;
XtSetArg(args[i], XmNfontList, &fontlist); i++;
XtGetValues(lObject->listList, args, i);
if (XmFontListInitFontContext(&context, fontlist)) {
XFontStruct *font;
XmStringCharSet charset;
if (XmFontListGetNextFont(context, &charset, &font)) {
Dimension temp_width, width;
width = (num_cols + 1) * font->max_bounds.width; /* hack */
i = 0;
XtSetArg(args[i], XmNhighlightThickness, &temp_width); i++;
XtGetValues(lObject->listList, args, i);
width += 2 * temp_width;
i = 0;
XtSetArg(args[i], XmNlistMarginWidth, &temp_width); i++;
XtGetValues(lObject->listList, args, i);
width += 2 * temp_width;
i = 0;
XtSetArg(args[i], XmNscrolledWindowMarginWidth, &temp_width); i++;
XtGetValues(lObject->listPort, args, i);
width += 2 * temp_width;
i = 0;
XtSetArg(args[i], XmNwidth, (XtArgVal) width); i++;
XtSetValues(lObject->listList, args, i);
}
XmFontListFreeFontContext(context);
}
}
/*
restrict the height of the action area:
*/
#ifdef RESTRICT_ACTION_AREA
i = 0;
XtSetArg(args[i], XmNmarginHeight, &margin_height); i++;
XtGetValues(lObject->listAction, args, i);
i = 0;
XtSetArg(args[i], XmNheight, &height); i++;
XtGetValues(lObject->listDismissButton, args, i);
i = 0;
XtSetArg(args[i], XmNpaneMinimum,
(XtArgVal) (height + (margin_height * 2))); i++;
XtSetArg(args[i], XmNpaneMaximum,
(XtArgVal) (height + (margin_height * 2))); i++;
#else
i = 0;
XtSetArg(args[i], XmNskipAdjust, (XtArgVal) True); i++;
#endif
XtSetValues(lObject->listAction, args, i);
remove_sash_traversal(lObject->listPane);
return lObject;
} /* listShell_create */
/*
listShell_destroy() frees the storage for a `ListShell' object.
*/
void listShell_destroy(lObject)
ListShell lObject;
{
XtDestroyWidget(lObject->listShell);
listShell_free_list(lObject);
XtFree((char *) lObject->self);
} /* listShell_destroy */
/*
listShell_make_list() builds a list from a null-terminated
array of strings and initializes the list widget's item resources.
*/
void listShell_make_list(lObject, items, char_set)
ListShell lObject;
char *items[];
XmStringCharSet char_set;
{
if (listShell_allocate_list(lObject, items, char_set)) {
Arg args[5];
int i;
i = 0;
XtSetArg(args[i], XmNitems, (XtArgVal) lObject->list_items); i++;
XtSetArg(args[i], XmNitemCount, (XtArgVal) lObject->num_items); i++;
XtSetValues(lObject->listList, args, i);
}
} /* listShell_make_list */
/*
listShell_free_list() frees the storage for the list's
array of strings.
*/
void listShell_free_list(lObject)
ListShell lObject;
{
if (lObject->list_items) {
int i;
for (i = 0; i < lObject->num_items; i++)
XmStringFree(lObject->list_items[i]);
XtFree((char *) lObject->list_items);
lObject->list_items = NULL;
}
} /* listShell_free_list */
/*
listShell_realize() realizes the top-level shell window
that houses the list selection widget.
*/
void listShell_realize(lObject)
ListShell lObject;
{
XtRealizeWidget(lObject->listShell);
} /* listShell_realize */
/*
listShell_activate() maps the `ListShell' window.
*/
void listShell_activate(lObject)
ListShell lObject;
{
if (!XtIsRealized(lObject->listShell))
return;
lObject->is_active = TRUE;
XmListDeselectAllItems(lObject->listList);
XtMapWidget(lObject->listShell);
} /* listShell_activate */
/*
listShell_deactivate() removes the `ListShell' window.
*/
void listShell_deactivate(lObject)
ListShell lObject;
{
lObject->is_active = FALSE;
XmListDeselectAllItems(lObject->listList);
XtUnmapWidget(lObject->listShell);
} /* listShell_deactivate */
/*
listShell_is_active() determines whether or not the object
is currenty active/mapped.
*/
int listShell_is_active(lObject)
ListShell lObject;
{
return lObject->is_active;
} /* listShell_is_active */
/*
listShell_add_callback() registers a callback for the
list widget.
*/
void listShell_add_callback(lObject, cb_function, client_data)
ListShell lObject;
void (*cb_function)();
XtPointer client_data;
{
XtAddCallback(lObject->listList,
XmNbrowseSelectionCallback, cb_function, client_data);
} /* listShell_add_callback */
/*
For the following functions listShell_<widget_name>() returns
the widget IDs of the internal widgets.
*/
Widget listShell_listShell(lObject)
ListShell lObject;
{
return lObject->listShell;
} /* listShell_listShell */
Widget listShell_instance(lObject)
ListShell lObject;
{
return lObject->instance;
} /* listShell_instance */
Widget listShell_class(lObject)
ListShell lObject;
{
return lObject->class;
} /* listShell_class */
Widget listShell_listPane(lObject)
ListShell lObject;
{
return lObject->listPane;
} /* listShell_listPane */
Widget listShell_listAction(lObject)
ListShell lObject;
{
return lObject->listAction;
} /* listShell_listAction */
Widget listShell_listDismissButton(lObject)
ListShell lObject;
{
return lObject->listDismissButton;
} /* listShell_listDismissButton */
Widget listShell_listPort(lObject)
ListShell lObject;
{
return lObject->listPort;
} /* listShell_listPort */
Widget listShell_listList(lObject)
ListShell lObject;
{
return lObject->listList;
} /* listShell_listList */
/*
Private support functions:
*/
/*
listShell_allocate_list() builds a dynamic list from a
null-terminated array of strings.
*/
static int listShell_allocate_list(lObject, items, char_set)
ListShell lObject;
char *items[];
XmStringCharSet char_set;
{
int i;
listShell_free_list(lObject);
if (!items)
return FALSE;
for (lObject->num_items = 0; items[lObject->num_items];
lObject->num_items++)
/* count the number of items */;
lObject->list_items = (XmString *)
XtMalloc((Cardinal) (sizeof(XmString) * lObject->num_items));
if (lObject->list_items) {
for (i = 0; i < lObject->num_items; i++)
lObject->list_items[i] = XmStringCreateLtoR(items[i], char_set);
return TRUE;
}
else
return FALSE;
} /* listShell_allocate_list */
/*
Private callback functions:
*/
/*
ListShellDismiss() is a private callback that removes
the `ListShell' window.
*/
/*ARGSUSED*/
static void ListShellDismiss(w, client_data, call_data)
Widget w;
XtPointer client_data;
XtPointer call_data;
{
ListShell lObject = (ListShell) client_data;
XtUnmapWidget(lObject->listShell);
} /* ListShellDismiss */