You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
124 lines
2.9 KiB
124 lines
2.9 KiB
/*
|
|
* mini-wm.c - simple keyboard focus handling 'wm'.
|
|
*
|
|
* Copyright (C) 2002 Red Hat, Inc. All rights reserved.
|
|
*
|
|
* This program 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 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
* Author(s): Owen Taylor <otaylor@redhat.com>
|
|
*/
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
|
|
#include <gdk/gdkx.h>
|
|
#include <gtk/gtk.h>
|
|
#include <X11/extensions/Xcomposite.h>
|
|
|
|
static gboolean
|
|
is_focusable (Window window)
|
|
{
|
|
Display *xdisplay = GDK_DISPLAY ();
|
|
XWindowAttributes xwa;
|
|
gboolean result = FALSE;
|
|
|
|
gdk_error_trap_push ();
|
|
if (XGetWindowAttributes (xdisplay, window, &xwa))
|
|
{
|
|
if (!xwa.override_redirect && xwa.map_state == IsViewable)
|
|
result = TRUE;
|
|
}
|
|
gdk_error_trap_pop ();
|
|
|
|
return result;
|
|
}
|
|
|
|
static void
|
|
check_focus ()
|
|
{
|
|
Window *children;
|
|
unsigned int n_children;
|
|
Window root;
|
|
Window parent;
|
|
|
|
XQueryTree (GDK_DISPLAY(), GDK_ROOT_WINDOW(),
|
|
&root, &parent, &children, &n_children);
|
|
|
|
while (n_children > 0) {
|
|
if (is_focusable (children[n_children-1])) {
|
|
gdk_error_trap_push ();
|
|
XSetInputFocus (GDK_DISPLAY(), children[n_children-1],
|
|
RevertToPointerRoot, CurrentTime);
|
|
XSync (GDK_DISPLAY(), 0);
|
|
if (gdk_error_trap_pop () == 0)
|
|
break;
|
|
}
|
|
n_children--;
|
|
}
|
|
|
|
XFree (children);
|
|
}
|
|
|
|
GdkFilterReturn
|
|
mini_wm_root_filter (GdkXEvent *xevent,
|
|
GdkEvent *event,
|
|
gpointer data)
|
|
{
|
|
XEvent *xev = xevent;
|
|
|
|
if (xev->xany.type == MapNotify ||
|
|
xev->xany.type == UnmapNotify ||
|
|
xev->xany.type == ConfigureNotify ||
|
|
xev->xany.type == DestroyNotify)
|
|
{
|
|
check_focus ();
|
|
}
|
|
|
|
return GDK_FILTER_CONTINUE;
|
|
}
|
|
|
|
void
|
|
mini_wm_start (void)
|
|
{
|
|
XWindowAttributes attrs;
|
|
|
|
XCompositeRedirectSubwindows (GDK_DISPLAY(), GDK_ROOT_WINDOW(),
|
|
CompositeRedirectAutomatic);
|
|
|
|
XGetWindowAttributes (GDK_DISPLAY(), GDK_ROOT_WINDOW(), &attrs);
|
|
XSelectInput (GDK_DISPLAY(), GDK_ROOT_WINDOW(),
|
|
attrs.your_event_mask | SubstructureNotifyMask);
|
|
|
|
gdk_window_add_filter (GDK_ROOT_PARENT (), mini_wm_root_filter, NULL);
|
|
|
|
check_focus ();
|
|
}
|
|
|
|
int main( int argc,
|
|
char *argv[] )
|
|
{
|
|
gtk_init (&argc, &argv);
|
|
|
|
mini_wm_start ();
|
|
|
|
/* Indicate back to anaconda that we now have established
|
|
* connection to the display. */
|
|
if (write(1, "#", 1) == -1) abort();
|
|
|
|
gtk_main();
|
|
|
|
return(0);
|
|
}
|