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Most of this change is to boilerplate commentary such as license URLs. This change was prompted by ftp://ftp.gnu.org's going-away party, planned for November. Change these FTP URLs to https://ftp.gnu.org instead. Make similar changes for URLs to other organizations moving away from FTP. Also, change HTTP to HTTPS for URLs to gnu.org and fsf.org when this works, as this will further help defend against man-in-the-middle attacks (for this part I omitted the MS-DOS and MS-Windows sources and the test tarballs to keep the workload down). HTTPS is not fully working to lists.gnu.org so I left those URLs alone for now.
140 lines
3.6 KiB
C
140 lines
3.6 KiB
C
/* Defines some widget utility functions.
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Copyright (C) 1992 Lucid, Inc.
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Copyright (C) 1994, 2001-2017 Free Software Foundation, Inc.
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This file is part of the Lucid Widget Library.
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The Lucid Widget Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 1, or (at your option)
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any later version.
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The Lucid Widget Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>. */
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#include <config.h>
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#include <setjmp.h>
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#include <lisp.h>
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#include <X11/Xatom.h>
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#include <X11/IntrinsicP.h>
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#include <X11/ObjectP.h>
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#include "lwlib-utils.h"
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#include "lwlib.h"
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/* Redisplay the contents of the widget, without first clearing it. */
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void
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XtNoClearRefreshWidget (Widget widget)
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{
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XEvent event;
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event.type = Expose;
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event.xexpose.serial = 0;
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event.xexpose.send_event = 0;
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event.xexpose.display = XtDisplay (widget);
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event.xexpose.window = XtWindow (widget);
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event.xexpose.x = 0;
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event.xexpose.y = 0;
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event.xexpose.width = widget->core.width;
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event.xexpose.height = widget->core.height;
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event.xexpose.count = 0;
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(*widget->core.widget_class->core_class.expose)
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(widget, &event, (Region)NULL);
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}
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/*
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* Apply a function to all the subwidgets of a given widget recursively.
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*/
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void
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XtApplyToWidgets (Widget w, XtApplyToWidgetsProc proc, XtPointer arg)
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{
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if (XtIsComposite (w))
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{
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CompositeWidget cw = (CompositeWidget) w;
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/* We have to copy the children list before mapping over it, because
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the procedure might add/delete elements, which would lose badly.
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*/
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int nkids = cw->composite.num_children;
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Widget *kids = (Widget *) xmalloc (sizeof (Widget) * nkids);
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int i;
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memcpy ((char *) kids, (char *) cw->composite.children,
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sizeof (Widget) * nkids);
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for (i = 0; i < nkids; i++)
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/* This prevent us from using gadgets, why is it here? */
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/* if (XtIsWidget (kids [i])) */
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{
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/* do the kiddies first in case we're destroying */
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XtApplyToWidgets (kids [i], proc, arg);
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proc (kids [i], arg);
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}
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xfree (kids);
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}
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}
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/*
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* Apply a function to all the subwidgets of a given widget recursively.
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* Stop as soon as the function returns non NULL and returns this as a value.
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*/
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void *
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XtApplyUntilToWidgets (Widget w, XtApplyUntilToWidgetsProc proc, XtPointer arg)
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{
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void* result;
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if (XtIsComposite (w))
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{
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CompositeWidget cw = (CompositeWidget)w;
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int i;
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for (i = 0; i < cw->composite.num_children; i++)
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if (XtIsWidget (cw->composite.children [i])){
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result = proc (cw->composite.children [i], arg);
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if (result)
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return result;
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result = XtApplyUntilToWidgets (cw->composite.children [i], proc,
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arg);
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if (result)
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return result;
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}
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}
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return NULL;
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}
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/*
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* Returns a copy of the list of all children of a composite widget
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*/
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Widget *
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XtCompositeChildren (Widget widget, unsigned int *number)
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{
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CompositeWidget cw = (CompositeWidget)widget;
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Widget* result;
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int n;
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int i;
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if (!XtIsComposite (widget))
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{
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*number = 0;
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return NULL;
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}
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n = cw->composite.num_children;
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result = (Widget*)(void*)XtMalloc (n * sizeof (Widget));
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*number = n;
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for (i = 0; i < n; i++)
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result [i] = cw->composite.children [i];
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return result;
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}
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Boolean
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XtWidgetBeingDestroyedP (Widget widget)
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{
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return widget->core.being_destroyed;
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}
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