Commit | Line | Data |
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07bf635f | 1 | /* Defines some widget utility functions. |
67f02b82 | 2 | |
4424d48a | 3 | Copyright (C) 1992 Lucid, Inc. |
ba318903 | 4 | Copyright (C) 1994, 2001-2014 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 | |
fee0bd5f | 19 | along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */ |
07bf635f | 20 | |
d6c5b98a | 21 | #include <config.h> |
d6c5b98a | 22 | |
d7306fe6 | 23 | #include <setjmp.h> |
67f02b82 | 24 | #include <lisp.h> |
2f96293d | 25 | |
07bf635f RS |
26 | #include <X11/Xatom.h> |
27 | #include <X11/IntrinsicP.h> | |
28 | #include <X11/ObjectP.h> | |
29 | #include "lwlib-utils.h" | |
123c6301 | 30 | #include "lwlib.h" |
07bf635f RS |
31 | |
32 | /* Redisplay the contents of the widget, without first clearing it. */ | |
33 | void | |
c3174d16 | 34 | XtNoClearRefreshWidget (Widget widget) |
07bf635f RS |
35 | { |
36 | XEvent event; | |
37 | ||
38 | event.type = Expose; | |
39 | event.xexpose.serial = 0; | |
40 | event.xexpose.send_event = 0; | |
41 | event.xexpose.display = XtDisplay (widget); | |
42 | event.xexpose.window = XtWindow (widget); | |
43 | event.xexpose.x = 0; | |
44 | event.xexpose.y = 0; | |
45 | event.xexpose.width = widget->core.width; | |
46 | event.xexpose.height = widget->core.height; | |
47 | event.xexpose.count = 0; | |
48 | ||
49 | (*widget->core.widget_class->core_class.expose) | |
50 | (widget, &event, (Region)NULL); | |
51 | } | |
52 | ||
53 | ||
177c0ea7 | 54 | /* |
07bf635f RS |
55 | * Apply a function to all the subwidgets of a given widget recursively. |
56 | */ | |
57 | void | |
c3174d16 | 58 | XtApplyToWidgets (Widget w, XtApplyToWidgetsProc proc, XtPointer arg) |
07bf635f RS |
59 | { |
60 | if (XtIsComposite (w)) | |
61 | { | |
62 | CompositeWidget cw = (CompositeWidget) w; | |
63 | /* We have to copy the children list before mapping over it, because | |
64 | the procedure might add/delete elements, which would lose badly. | |
65 | */ | |
66 | int nkids = cw->composite.num_children; | |
3370edca | 67 | Widget *kids = (Widget *) xmalloc (sizeof (Widget) * nkids); |
07bf635f | 68 | int i; |
72af86bd AS |
69 | memcpy ((char *) kids, (char *) cw->composite.children, |
70 | sizeof (Widget) * nkids); | |
07bf635f RS |
71 | for (i = 0; i < nkids; i++) |
72 | /* This prevent us from using gadgets, why is it here? */ | |
73 | /* if (XtIsWidget (kids [i])) */ | |
74 | { | |
75 | /* do the kiddies first in case we're destroying */ | |
76 | XtApplyToWidgets (kids [i], proc, arg); | |
77 | proc (kids [i], arg); | |
78 | } | |
81d40c92 | 79 | xfree (kids); |
07bf635f RS |
80 | } |
81 | } | |
82 | ||
83 | ||
84 | /* | |
85 | * Apply a function to all the subwidgets of a given widget recursively. | |
86 | * Stop as soon as the function returns non NULL and returns this as a value. | |
87 | */ | |
88 | void * | |
c3174d16 | 89 | XtApplyUntilToWidgets (Widget w, XtApplyUntilToWidgetsProc proc, XtPointer arg) |
07bf635f RS |
90 | { |
91 | void* result; | |
92 | if (XtIsComposite (w)) | |
93 | { | |
94 | CompositeWidget cw = (CompositeWidget)w; | |
95 | int i; | |
96 | for (i = 0; i < cw->composite.num_children; i++) | |
97 | if (XtIsWidget (cw->composite.children [i])){ | |
98 | result = proc (cw->composite.children [i], arg); | |
99 | if (result) | |
100 | return result; | |
101 | result = XtApplyUntilToWidgets (cw->composite.children [i], proc, | |
102 | arg); | |
103 | if (result) | |
104 | return result; | |
105 | } | |
106 | } | |
107 | return NULL; | |
108 | } | |
109 | ||
110 | ||
111 | /* | |
112 | * Returns a copy of the list of all children of a composite widget | |
113 | */ | |
114 | Widget * | |
c3174d16 | 115 | XtCompositeChildren (Widget widget, unsigned int *number) |
07bf635f RS |
116 | { |
117 | CompositeWidget cw = (CompositeWidget)widget; | |
118 | Widget* result; | |
119 | int n; | |
120 | int i; | |
121 | ||
122 | if (!XtIsComposite (widget)) | |
123 | { | |
124 | *number = 0; | |
125 | return NULL; | |
126 | } | |
127 | n = cw->composite.num_children; | |
b165261a | 128 | result = (Widget*)(void*)XtMalloc (n * sizeof (Widget)); |
07bf635f RS |
129 | *number = n; |
130 | for (i = 0; i < n; i++) | |
131 | result [i] = cw->composite.children [i]; | |
132 | return result; | |
133 | } | |
134 | ||
135 | Boolean | |
c3174d16 | 136 | XtWidgetBeingDestroyedP (Widget widget) |
07bf635f RS |
137 | { |
138 | return widget->core.being_destroyed; | |
139 | } |