annotate lwlib/lwlib-utils.c @ 462:0784d089fdc9 r21-2-46

Import from CVS: tag r21-2-46
author cvs
date Mon, 13 Aug 2007 11:44:37 +0200
parents 3ecd8885ac67
children 54fa1a5c2d12
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
428
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
1 /* Defines some widget utility functions.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
2 Copyright (C) 1992 Lucid, Inc.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
3
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
4 This file is part of the Lucid Widget Library.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
5
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
6 The Lucid Widget Library is free software; you can redistribute it and/or
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
7 modify it under the terms of the GNU General Public License as published by
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
8 the Free Software Foundation; either version 1, or (at your option)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
9 any later version.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
10
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
11 The Lucid Widget Library is distributed in the hope that it will be useful,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
14 GNU General Public License for more details.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
15
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
16 You should have received a copy of the GNU General Public License
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
17 along with XEmacs; see the file COPYING. If not, write to
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
18 the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
19 Boston, MA 02111-1307, USA. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
20
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
21 #include <config.h>
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
22 #include <stdlib.h>
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
23 #include <string.h>
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
24 #include <memory.h>
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
25 #ifdef HAVE_UNISTD_H
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
26 #include <unistd.h>
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
27 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
28
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
29 #include <X11/Xatom.h>
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
30 #include <X11/IntrinsicP.h>
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
31 #include <X11/ObjectP.h>
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
32 #include "lwlib-utils.h"
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
33
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
34 void
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
35 destroy_all_children (Widget widget)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
36 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
37 Widget* children;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
38 unsigned int number;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
39 int i;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
40
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
41 children = XtCompositeChildren (widget, &number);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
42 if (children)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
43 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
44 /* Unmanage all children and destroy them. They will only be
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
45 * really destroyed when we get out of DispatchEvent. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
46 for (i = 0; i < number; i++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
47 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
48 Widget child = children [i];
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
49 if (!child->core.being_destroyed)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
50 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
51 XtUnmanageChild (child);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
52 XtDestroyWidget (child);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
53 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
54 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
55 XtFree ((char *) children);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
56 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
57 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
58
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
59 /* Redisplay the contents of the widget, without first clearing it. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
60 void
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
61 XtNoClearRefreshWidget (Widget widget)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
62 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
63 XEvent event;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
64 XExposeEvent* ev = &event.xexpose;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
65
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
66 ev->type = Expose;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
67 ev->serial = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
68 ev->send_event = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
69 ev->display = XtDisplay (widget);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
70 ev->window = XtWindow (widget);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
71 ev->x = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
72 ev->y = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
73 ev->width = widget->core.width;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
74 ev->height = widget->core.height;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
75 ev->count = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
76
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
77 (*widget->core.widget_class->core_class.expose)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
78 (widget, &event, (Region)NULL);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
79 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
80
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
81
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
82 /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
83 * Apply a function to all the subwidgets of a given widget recursively.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
84 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
85 void
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
86 XtApplyToWidgets (Widget w, XtApplyToWidgetsProc proc, XtPointer arg)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
87 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
88 if (XtIsComposite (w))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
89 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
90 CompositeWidget cw = (CompositeWidget) w;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
91 /* We have to copy the children list before mapping over it, because
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
92 the procedure might add/delete elements, which would lose badly. */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
93 int nkids = cw->composite.num_children;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
94 Widget *kids = (Widget *) malloc (sizeof (Widget) * nkids);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
95 int i;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
96 memcpy (kids, cw->composite.children, sizeof (Widget) * nkids);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
97 for (i = 0; i < nkids; i++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
98 /* This prevent us from using gadgets, why is it here? */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
99 /* if (XtIsWidget (kids [i])) */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
100 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
101 /* do the kiddies first in case we're destroying */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
102 XtApplyToWidgets (kids [i], proc, arg);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
103 proc (kids [i], arg);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
104 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
105 free (kids);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
106 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
107 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
108
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
109
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
110 /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
111 * Apply a function to all the subwidgets of a given widget recursively.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
112 * Stop as soon as the function returns non NULL and returns this as a value.
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
113 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
114 void *
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
115 XtApplyUntilToWidgets (Widget w, XtApplyUntilToWidgetsProc proc, XtPointer arg)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
116 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
117 void* result;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
118 if (XtIsComposite (w))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
119 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
120 CompositeWidget cw = (CompositeWidget)w;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
121 int i;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
122 for (i = 0; i < cw->composite.num_children; i++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
123 if (XtIsWidget (cw->composite.children [i])){
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
124 result = proc (cw->composite.children [i], arg);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
125 if (result)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
126 return result;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
127 result = XtApplyUntilToWidgets (cw->composite.children [i], proc,
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
128 arg);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
129 if (result)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
130 return result;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
131 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
132 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
133 return NULL;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
134 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
135
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
136
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
137 /*
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
138 * Returns a copy of the list of all children of a composite widget
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
139 */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
140 Widget *
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
141 XtCompositeChildren (Widget widget, unsigned int* number)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
142 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
143 CompositeWidget cw = (CompositeWidget)widget;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
144 Widget* result;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
145 int n;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
146 int i;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
147
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
148 if (!XtIsComposite (widget))
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
149 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
150 *number = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
151 return NULL;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
152 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
153 n = cw->composite.num_children;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
154 result = (Widget*)XtMalloc (n * sizeof (Widget));
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
155 *number = n;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
156 for (i = 0; i < n; i++)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
157 result [i] = cw->composite.children [i];
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
158 return result;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
159 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
160
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
161 Boolean
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
162 XtWidgetBeingDestroyedP (Widget widget)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
163 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
164 return widget->core.being_destroyed;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
165 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
166
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
167 void
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
168 XtSafelyDestroyWidget (Widget widget)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
169 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
170 #if 0
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
171
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
172 /* this requires IntrinsicI.h (actually, InitialI.h) */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
173
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
174 XtAppContext app = XtWidgetToApplicationContext(widget);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
175
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
176 if (app->dispatch_level == 0)
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
177 {
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
178 app->dispatch_level = 1;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
179 XtDestroyWidget (widget);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
180 /* generates an event so that the event loop will be called */
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
181 XChangeProperty (XtDisplay (widget), XtWindow (widget),
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
182 XA_STRING, XA_STRING, 32, PropModeAppend, NULL, 0);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
183 app->dispatch_level = 0;
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
184 }
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
185 else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
186 XtDestroyWidget (widget);
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
187
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
188 #else
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
189 abort ();
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
190 #endif
3ecd8885ac67 Import from CVS: tag r21-2-22
cvs
parents:
diff changeset
191 }