mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-11-26 07:33:47 +00:00
140 lines
3.6 KiB
C
140 lines
3.6 KiB
C
/* Defines some widget utility functions.
|
|
|
|
Copyright (C) 1992 Lucid, Inc.
|
|
Copyright (C) 1994, 2001-2015 Free Software Foundation, Inc.
|
|
|
|
This file is part of the Lucid Widget Library.
|
|
|
|
The Lucid Widget Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 1, or (at your option)
|
|
any later version.
|
|
|
|
The Lucid Widget Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
|
|
|
|
#include <config.h>
|
|
|
|
#include <setjmp.h>
|
|
#include <lisp.h>
|
|
|
|
#include <X11/Xatom.h>
|
|
#include <X11/IntrinsicP.h>
|
|
#include <X11/ObjectP.h>
|
|
#include "lwlib-utils.h"
|
|
#include "lwlib.h"
|
|
|
|
/* Redisplay the contents of the widget, without first clearing it. */
|
|
void
|
|
XtNoClearRefreshWidget (Widget widget)
|
|
{
|
|
XEvent event;
|
|
|
|
event.type = Expose;
|
|
event.xexpose.serial = 0;
|
|
event.xexpose.send_event = 0;
|
|
event.xexpose.display = XtDisplay (widget);
|
|
event.xexpose.window = XtWindow (widget);
|
|
event.xexpose.x = 0;
|
|
event.xexpose.y = 0;
|
|
event.xexpose.width = widget->core.width;
|
|
event.xexpose.height = widget->core.height;
|
|
event.xexpose.count = 0;
|
|
|
|
(*widget->core.widget_class->core_class.expose)
|
|
(widget, &event, (Region)NULL);
|
|
}
|
|
|
|
|
|
/*
|
|
* Apply a function to all the subwidgets of a given widget recursively.
|
|
*/
|
|
void
|
|
XtApplyToWidgets (Widget w, XtApplyToWidgetsProc proc, XtPointer arg)
|
|
{
|
|
if (XtIsComposite (w))
|
|
{
|
|
CompositeWidget cw = (CompositeWidget) w;
|
|
/* We have to copy the children list before mapping over it, because
|
|
the procedure might add/delete elements, which would lose badly.
|
|
*/
|
|
int nkids = cw->composite.num_children;
|
|
Widget *kids = (Widget *) xmalloc (sizeof (Widget) * nkids);
|
|
int i;
|
|
memcpy ((char *) kids, (char *) cw->composite.children,
|
|
sizeof (Widget) * nkids);
|
|
for (i = 0; i < nkids; i++)
|
|
/* This prevent us from using gadgets, why is it here? */
|
|
/* if (XtIsWidget (kids [i])) */
|
|
{
|
|
/* do the kiddies first in case we're destroying */
|
|
XtApplyToWidgets (kids [i], proc, arg);
|
|
proc (kids [i], arg);
|
|
}
|
|
xfree (kids);
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* Apply a function to all the subwidgets of a given widget recursively.
|
|
* Stop as soon as the function returns non NULL and returns this as a value.
|
|
*/
|
|
void *
|
|
XtApplyUntilToWidgets (Widget w, XtApplyUntilToWidgetsProc proc, XtPointer arg)
|
|
{
|
|
void* result;
|
|
if (XtIsComposite (w))
|
|
{
|
|
CompositeWidget cw = (CompositeWidget)w;
|
|
int i;
|
|
for (i = 0; i < cw->composite.num_children; i++)
|
|
if (XtIsWidget (cw->composite.children [i])){
|
|
result = proc (cw->composite.children [i], arg);
|
|
if (result)
|
|
return result;
|
|
result = XtApplyUntilToWidgets (cw->composite.children [i], proc,
|
|
arg);
|
|
if (result)
|
|
return result;
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
|
|
/*
|
|
* Returns a copy of the list of all children of a composite widget
|
|
*/
|
|
Widget *
|
|
XtCompositeChildren (Widget widget, unsigned int *number)
|
|
{
|
|
CompositeWidget cw = (CompositeWidget)widget;
|
|
Widget* result;
|
|
int n;
|
|
int i;
|
|
|
|
if (!XtIsComposite (widget))
|
|
{
|
|
*number = 0;
|
|
return NULL;
|
|
}
|
|
n = cw->composite.num_children;
|
|
result = (Widget*)(void*)XtMalloc (n * sizeof (Widget));
|
|
*number = n;
|
|
for (i = 0; i < n; i++)
|
|
result [i] = cw->composite.children [i];
|
|
return result;
|
|
}
|
|
|
|
Boolean
|
|
XtWidgetBeingDestroyedP (Widget widget)
|
|
{
|
|
return widget->core.being_destroyed;
|
|
}
|