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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 | |
c3174d16 | 45 | XtNoClearRefreshWidget (Widget widget) |
07bf635f RS |
46 | { |
47 | XEvent event; | |
48 | ||
49 | event.type = Expose; | |
50 | event.xexpose.serial = 0; | |
51 | event.xexpose.send_event = 0; | |
52 | event.xexpose.display = XtDisplay (widget); | |
53 | event.xexpose.window = XtWindow (widget); | |
54 | event.xexpose.x = 0; | |
55 | event.xexpose.y = 0; | |
56 | event.xexpose.width = widget->core.width; | |
57 | event.xexpose.height = widget->core.height; | |
58 | event.xexpose.count = 0; | |
59 | ||
60 | (*widget->core.widget_class->core_class.expose) | |
61 | (widget, &event, (Region)NULL); | |
62 | } | |
63 | ||
64 | ||
177c0ea7 | 65 | /* |
07bf635f RS |
66 | * Apply a function to all the subwidgets of a given widget recursively. |
67 | */ | |
68 | void | |
c3174d16 | 69 | XtApplyToWidgets (Widget w, XtApplyToWidgetsProc proc, XtPointer arg) |
07bf635f RS |
70 | { |
71 | if (XtIsComposite (w)) | |
72 | { | |
73 | CompositeWidget cw = (CompositeWidget) w; | |
74 | /* We have to copy the children list before mapping over it, because | |
75 | the procedure might add/delete elements, which would lose badly. | |
76 | */ | |
77 | int nkids = cw->composite.num_children; | |
78 | Widget *kids = (Widget *) malloc (sizeof (Widget) * nkids); | |
79 | int i; | |
72af86bd AS |
80 | memcpy ((char *) kids, (char *) cw->composite.children, |
81 | sizeof (Widget) * nkids); | |
07bf635f RS |
82 | for (i = 0; i < nkids; i++) |
83 | /* This prevent us from using gadgets, why is it here? */ | |
84 | /* if (XtIsWidget (kids [i])) */ | |
85 | { | |
86 | /* do the kiddies first in case we're destroying */ | |
87 | XtApplyToWidgets (kids [i], proc, arg); | |
88 | proc (kids [i], arg); | |
89 | } | |
90 | free (kids); | |
91 | } | |
92 | } | |
93 | ||
94 | ||
95 | /* | |
96 | * Apply a function to all the subwidgets of a given widget recursively. | |
97 | * Stop as soon as the function returns non NULL and returns this as a value. | |
98 | */ | |
99 | void * | |
c3174d16 | 100 | XtApplyUntilToWidgets (Widget w, XtApplyUntilToWidgetsProc proc, XtPointer arg) |
07bf635f RS |
101 | { |
102 | void* result; | |
103 | if (XtIsComposite (w)) | |
104 | { | |
105 | CompositeWidget cw = (CompositeWidget)w; | |
106 | int i; | |
107 | for (i = 0; i < cw->composite.num_children; i++) | |
108 | if (XtIsWidget (cw->composite.children [i])){ | |
109 | result = proc (cw->composite.children [i], arg); | |
110 | if (result) | |
111 | return result; | |
112 | result = XtApplyUntilToWidgets (cw->composite.children [i], proc, | |
113 | arg); | |
114 | if (result) | |
115 | return result; | |
116 | } | |
117 | } | |
118 | return NULL; | |
119 | } | |
120 | ||
121 | ||
122 | /* | |
123 | * Returns a copy of the list of all children of a composite widget | |
124 | */ | |
125 | Widget * | |
c3174d16 | 126 | XtCompositeChildren (Widget widget, unsigned int *number) |
07bf635f RS |
127 | { |
128 | CompositeWidget cw = (CompositeWidget)widget; | |
129 | Widget* result; | |
130 | int n; | |
131 | int i; | |
132 | ||
133 | if (!XtIsComposite (widget)) | |
134 | { | |
135 | *number = 0; | |
136 | return NULL; | |
137 | } | |
138 | n = cw->composite.num_children; | |
139 | result = (Widget*)XtMalloc (n * sizeof (Widget)); | |
140 | *number = n; | |
141 | for (i = 0; i < n; i++) | |
142 | result [i] = cw->composite.children [i]; | |
143 | return result; | |
144 | } | |
145 | ||
146 | Boolean | |
c3174d16 | 147 | XtWidgetBeingDestroyedP (Widget widget) |
07bf635f RS |
148 | { |
149 | return widget->core.being_destroyed; | |
150 | } | |
151 | ||
152 | void | |
c3174d16 | 153 | XtSafelyDestroyWidget (Widget widget) |
07bf635f RS |
154 | { |
155 | #if 0 | |
156 | ||
157 | /* this requires IntrinsicI.h (actually, InitialI.h) */ | |
158 | ||
159 | XtAppContext app = XtWidgetToApplicationContext(widget); | |
160 | ||
161 | if (app->dispatch_level == 0) | |
162 | { | |
163 | app->dispatch_level = 1; | |
164 | XtDestroyWidget (widget); | |
165 | /* generates an event so that the event loop will be called */ | |
166 | XChangeProperty (XtDisplay (widget), XtWindow (widget), | |
167 | XA_STRING, XA_STRING, 32, PropModeAppend, NULL, 0); | |
168 | app->dispatch_level = 0; | |
169 | } | |
170 | else | |
171 | XtDestroyWidget (widget); | |
177c0ea7 | 172 | |
07bf635f RS |
173 | #else |
174 | abort (); | |
175 | #endif | |
176 | } | |
ab5796a9 MB |
177 | |
178 | /* arch-tag: f21f0a1f-2a4e-44e1-8715-7f234fe2d159 | |
179 | (do not change this comment) */ |