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07bf635f | 1 | /* Defines some widget utility functions. |
4424d48a | 2 | Copyright (C) 1992 Lucid, Inc. |
114f9c96 GM |
3 | Copyright (C) 1994, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, |
4 | 2010 Free Software Foundation, Inc. | |
07bf635f RS |
5 | |
6 | This file is part of the Lucid Widget Library. | |
7 | ||
177c0ea7 | 8 | The Lucid Widget Library is free software; you can redistribute it and/or |
07bf635f RS |
9 | modify it under the terms of the GNU General Public License as published by |
10 | the Free Software Foundation; either version 1, or (at your option) | |
11 | any later version. | |
12 | ||
13 | The Lucid Widget Library is distributed in the hope that it will be useful, | |
177c0ea7 | 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
07bf635f RS |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
16 | GNU General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with GNU Emacs; see the file COPYING. If not, write to | |
364c38d3 LK |
20 | the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
21 | Boston, MA 02110-1301, USA. */ | |
07bf635f | 22 | |
d6c5b98a RS |
23 | #ifdef HAVE_CONFIG_H |
24 | #include <config.h> | |
25 | #endif | |
26 | ||
5750ebd8 KH |
27 | /* Definitions of these in config.h can cause |
28 | declaration conflicts later on between declarations for index | |
29 | and declarations for strchr. This file doesn't use | |
30 | index and rindex, so cancel them. */ | |
31 | #undef index | |
32 | #undef rindex | |
33 | ||
d7306fe6 | 34 | #include <setjmp.h> |
2f96293d RS |
35 | #include "../src/lisp.h" |
36 | ||
07bf635f RS |
37 | #include <X11/Xatom.h> |
38 | #include <X11/IntrinsicP.h> | |
39 | #include <X11/ObjectP.h> | |
40 | #include "lwlib-utils.h" | |
123c6301 | 41 | #include "lwlib.h" |
07bf635f RS |
42 | |
43 | /* Redisplay the contents of the widget, without first clearing it. */ | |
44 | void | |
345a94f9 RS |
45 | XtNoClearRefreshWidget (widget) |
46 | Widget widget; | |
07bf635f RS |
47 | { |
48 | XEvent event; | |
49 | ||
50 | event.type = Expose; | |
51 | event.xexpose.serial = 0; | |
52 | event.xexpose.send_event = 0; | |
53 | event.xexpose.display = XtDisplay (widget); | |
54 | event.xexpose.window = XtWindow (widget); | |
55 | event.xexpose.x = 0; | |
56 | event.xexpose.y = 0; | |
57 | event.xexpose.width = widget->core.width; | |
58 | event.xexpose.height = widget->core.height; | |
59 | event.xexpose.count = 0; | |
60 | ||
61 | (*widget->core.widget_class->core_class.expose) | |
62 | (widget, &event, (Region)NULL); | |
63 | } | |
64 | ||
65 | ||
177c0ea7 | 66 | /* |
07bf635f RS |
67 | * Apply a function to all the subwidgets of a given widget recursively. |
68 | */ | |
69 | void | |
345a94f9 RS |
70 | XtApplyToWidgets (w, proc, arg) |
71 | Widget w; | |
72 | XtApplyToWidgetsProc proc; | |
73 | XtPointer arg; | |
07bf635f RS |
74 | { |
75 | if (XtIsComposite (w)) | |
76 | { | |
77 | CompositeWidget cw = (CompositeWidget) w; | |
78 | /* We have to copy the children list before mapping over it, because | |
79 | the procedure might add/delete elements, which would lose badly. | |
80 | */ | |
81 | int nkids = cw->composite.num_children; | |
82 | Widget *kids = (Widget *) malloc (sizeof (Widget) * nkids); | |
83 | int i; | |
cdefcd82 DL |
84 | lwlib_bcopy ((char *) cw->composite.children, (char *) kids, |
85 | sizeof (Widget) * nkids); | |
07bf635f RS |
86 | for (i = 0; i < nkids; i++) |
87 | /* This prevent us from using gadgets, why is it here? */ | |
88 | /* if (XtIsWidget (kids [i])) */ | |
89 | { | |
90 | /* do the kiddies first in case we're destroying */ | |
91 | XtApplyToWidgets (kids [i], proc, arg); | |
92 | proc (kids [i], arg); | |
93 | } | |
94 | free (kids); | |
95 | } | |
96 | } | |
97 | ||
98 | ||
99 | /* | |
100 | * Apply a function to all the subwidgets of a given widget recursively. | |
101 | * Stop as soon as the function returns non NULL and returns this as a value. | |
102 | */ | |
103 | void * | |
345a94f9 RS |
104 | XtApplyUntilToWidgets (w, proc, arg) |
105 | Widget w; | |
106 | XtApplyUntilToWidgetsProc proc; | |
107 | XtPointer arg; | |
07bf635f RS |
108 | { |
109 | void* result; | |
110 | if (XtIsComposite (w)) | |
111 | { | |
112 | CompositeWidget cw = (CompositeWidget)w; | |
113 | int i; | |
114 | for (i = 0; i < cw->composite.num_children; i++) | |
115 | if (XtIsWidget (cw->composite.children [i])){ | |
116 | result = proc (cw->composite.children [i], arg); | |
117 | if (result) | |
118 | return result; | |
119 | result = XtApplyUntilToWidgets (cw->composite.children [i], proc, | |
120 | arg); | |
121 | if (result) | |
122 | return result; | |
123 | } | |
124 | } | |
125 | return NULL; | |
126 | } | |
127 | ||
128 | ||
129 | /* | |
130 | * Returns a copy of the list of all children of a composite widget | |
131 | */ | |
132 | Widget * | |
345a94f9 RS |
133 | XtCompositeChildren (widget, number) |
134 | Widget widget; | |
135 | unsigned int* number; | |
07bf635f RS |
136 | { |
137 | CompositeWidget cw = (CompositeWidget)widget; | |
138 | Widget* result; | |
139 | int n; | |
140 | int i; | |
141 | ||
142 | if (!XtIsComposite (widget)) | |
143 | { | |
144 | *number = 0; | |
145 | return NULL; | |
146 | } | |
147 | n = cw->composite.num_children; | |
148 | result = (Widget*)XtMalloc (n * sizeof (Widget)); | |
149 | *number = n; | |
150 | for (i = 0; i < n; i++) | |
151 | result [i] = cw->composite.children [i]; | |
152 | return result; | |
153 | } | |
154 | ||
155 | Boolean | |
345a94f9 RS |
156 | XtWidgetBeingDestroyedP (widget) |
157 | Widget widget; | |
07bf635f RS |
158 | { |
159 | return widget->core.being_destroyed; | |
160 | } | |
161 | ||
162 | void | |
345a94f9 RS |
163 | XtSafelyDestroyWidget (widget) |
164 | Widget widget; | |
07bf635f RS |
165 | { |
166 | #if 0 | |
167 | ||
168 | /* this requires IntrinsicI.h (actually, InitialI.h) */ | |
169 | ||
170 | XtAppContext app = XtWidgetToApplicationContext(widget); | |
171 | ||
172 | if (app->dispatch_level == 0) | |
173 | { | |
174 | app->dispatch_level = 1; | |
175 | XtDestroyWidget (widget); | |
176 | /* generates an event so that the event loop will be called */ | |
177 | XChangeProperty (XtDisplay (widget), XtWindow (widget), | |
178 | XA_STRING, XA_STRING, 32, PropModeAppend, NULL, 0); | |
179 | app->dispatch_level = 0; | |
180 | } | |
181 | else | |
182 | XtDestroyWidget (widget); | |
177c0ea7 | 183 | |
07bf635f RS |
184 | #else |
185 | abort (); | |
186 | #endif | |
187 | } | |
ab5796a9 MB |
188 | |
189 | /* arch-tag: f21f0a1f-2a4e-44e1-8715-7f234fe2d159 | |
190 | (do not change this comment) */ |