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/* Warp the pointer to the bottom right corner of the screen any time a key is pressed.
*
* Copyright (C) 2005 Shawn Betts <sabetts@vcn.bc.ca>
*
* unrat 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, or (at your option)
* any later version.
*
* unrat 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 software; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307 USA
*/
/*
This is what I used to compile it:
gcc -g -Wall -O2 -I/usr/X11R6/include -o unrat unrat.c -L /usr/X11R6/lib -lX11
*/
#include <X11/Xos.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xproto.h>
#include <stdio.h>
#include <stdlib.h>
int (*defaulthandler) (Display *, XErrorEvent *);
int
errorhandler (Display *display, XErrorEvent *error)
{
if (error->error_code != BadWindow)
(*defaulthandler) (display,error);
return 0;
}
int
main (void)
{
Display *display;
int i, numscreens;
display = XOpenDisplay (NULL);
if (!display)
{
fprintf (stderr, "unrat: could not open display\n");
exit (1);
}
defaulthandler = XSetErrorHandler (errorhandler);
numscreens = ScreenCount (display);
for (i = 0; i < numscreens; i++)
{
unsigned int j, nwins;
Window dw1, dw2, *wins;
XSelectInput (display, RootWindow (display, i),
KeyReleaseMask | SubstructureNotifyMask);
XQueryTree (display, RootWindow (display, i),
&dw1, &dw2, &wins, &nwins);
for (j = 0; j < nwins; j++)
XSelectInput (display, wins[j], KeyReleaseMask);
}
while (1)
{
XEvent event;
do
{
XNextEvent (display, &event);
if (event.type == CreateNotify)
{
XSelectInput (display, event.xcreatewindow.window,
KeyReleaseMask);
}
} while (event.type != KeyRelease);
/* A key was pressed. warp the rat. */
for (i = 0; i < numscreens; i++)
{
int x, y, wx, wy;
unsigned int mask;
Window root, child;
XQueryPointer (display, RootWindow (display, i),
&root, &child,
&x, &y, &wx, &wy,
&mask);
if (x < DisplayWidth (display, i) - 1
|| y < DisplayHeight (display, i) - 1)
{
XWarpPointer (display, None, RootWindow (display, i),
0, 0, 0, 0,
DisplayWidth (display, i),
DisplayHeight (display, i));
}
}
}
XCloseDisplay (display);
return 0;
}
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