Commit | Line | Data |
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07bf635f | 1 | /* Defines some widget utility functions. |
4424d48a GM |
2 | Copyright (C) 1992 Lucid, Inc. |
3 | Copyright (C) 1994, 2001, 2002, 2003, 2004, 2005, 2006, | |
f5d0ac07 | 4 | 2007, 2008, 2009 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 | ||
2f96293d RS |
34 | #include "../src/lisp.h" |
35 | ||
07bf635f RS |
36 | #include <X11/Xatom.h> |
37 | #include <X11/IntrinsicP.h> | |
38 | #include <X11/ObjectP.h> | |
39 | #include "lwlib-utils.h" | |
123c6301 | 40 | #include "lwlib.h" |
07bf635f RS |
41 | |
42 | /* Redisplay the contents of the widget, without first clearing it. */ | |
43 | void | |
345a94f9 RS |
44 | XtNoClearRefreshWidget (widget) |
45 | 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 | |
345a94f9 RS |
69 | XtApplyToWidgets (w, proc, arg) |
70 | Widget w; | |
71 | XtApplyToWidgetsProc proc; | |
72 | XtPointer arg; | |
07bf635f RS |
73 | { |
74 | if (XtIsComposite (w)) | |
75 | { | |
76 | CompositeWidget cw = (CompositeWidget) w; | |
77 | /* We have to copy the children list before mapping over it, because | |
78 | the procedure might add/delete elements, which would lose badly. | |
79 | */ | |
80 | int nkids = cw->composite.num_children; | |
81 | Widget *kids = (Widget *) malloc (sizeof (Widget) * nkids); | |
82 | int i; | |
cdefcd82 DL |
83 | lwlib_bcopy ((char *) cw->composite.children, (char *) kids, |
84 | sizeof (Widget) * nkids); | |
07bf635f RS |
85 | for (i = 0; i < nkids; i++) |
86 | /* This prevent us from using gadgets, why is it here? */ | |
87 | /* if (XtIsWidget (kids [i])) */ | |
88 | { | |
89 | /* do the kiddies first in case we're destroying */ | |
90 | XtApplyToWidgets (kids [i], proc, arg); | |
91 | proc (kids [i], arg); | |
92 | } | |
93 | free (kids); | |
94 | } | |
95 | } | |
96 | ||
97 | ||
98 | /* | |
99 | * Apply a function to all the subwidgets of a given widget recursively. | |
100 | * Stop as soon as the function returns non NULL and returns this as a value. | |
101 | */ | |
102 | void * | |
345a94f9 RS |
103 | XtApplyUntilToWidgets (w, proc, arg) |
104 | Widget w; | |
105 | XtApplyUntilToWidgetsProc proc; | |
106 | XtPointer arg; | |
07bf635f RS |
107 | { |
108 | void* result; | |
109 | if (XtIsComposite (w)) | |
110 | { | |
111 | CompositeWidget cw = (CompositeWidget)w; | |
112 | int i; | |
113 | for (i = 0; i < cw->composite.num_children; i++) | |
114 | if (XtIsWidget (cw->composite.children [i])){ | |
115 | result = proc (cw->composite.children [i], arg); | |
116 | if (result) | |
117 | return result; | |
118 | result = XtApplyUntilToWidgets (cw->composite.children [i], proc, | |
119 | arg); | |
120 | if (result) | |
121 | return result; | |
122 | } | |
123 | } | |
124 | return NULL; | |
125 | } | |
126 | ||
127 | ||
128 | /* | |
129 | * Returns a copy of the list of all children of a composite widget | |
130 | */ | |
131 | Widget * | |
345a94f9 RS |
132 | XtCompositeChildren (widget, number) |
133 | Widget widget; | |
134 | unsigned int* number; | |
07bf635f RS |
135 | { |
136 | CompositeWidget cw = (CompositeWidget)widget; | |
137 | Widget* result; | |
138 | int n; | |
139 | int i; | |
140 | ||
141 | if (!XtIsComposite (widget)) | |
142 | { | |
143 | *number = 0; | |
144 | return NULL; | |
145 | } | |
146 | n = cw->composite.num_children; | |
147 | result = (Widget*)XtMalloc (n * sizeof (Widget)); | |
148 | *number = n; | |
149 | for (i = 0; i < n; i++) | |
150 | result [i] = cw->composite.children [i]; | |
151 | return result; | |
152 | } | |
153 | ||
154 | Boolean | |
345a94f9 RS |
155 | XtWidgetBeingDestroyedP (widget) |
156 | Widget widget; | |
07bf635f RS |
157 | { |
158 | return widget->core.being_destroyed; | |
159 | } | |
160 | ||
161 | void | |
345a94f9 RS |
162 | XtSafelyDestroyWidget (widget) |
163 | Widget widget; | |
07bf635f RS |
164 | { |
165 | #if 0 | |
166 | ||
167 | /* this requires IntrinsicI.h (actually, InitialI.h) */ | |
168 | ||
169 | XtAppContext app = XtWidgetToApplicationContext(widget); | |
170 | ||
171 | if (app->dispatch_level == 0) | |
172 | { | |
173 | app->dispatch_level = 1; | |
174 | XtDestroyWidget (widget); | |
175 | /* generates an event so that the event loop will be called */ | |
176 | XChangeProperty (XtDisplay (widget), XtWindow (widget), | |
177 | XA_STRING, XA_STRING, 32, PropModeAppend, NULL, 0); | |
178 | app->dispatch_level = 0; | |
179 | } | |
180 | else | |
181 | XtDestroyWidget (widget); | |
177c0ea7 | 182 | |
07bf635f RS |
183 | #else |
184 | abort (); | |
185 | #endif | |
186 | } | |
ab5796a9 MB |
187 | |
188 | /* arch-tag: f21f0a1f-2a4e-44e1-8715-7f234fe2d159 | |
189 | (do not change this comment) */ |