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/* viewer-x.c: Common code X-based rendering demos
*
* Copyright (C) 1999,2004,2005 Red Hat, Inc.
* Copyright (C) 2001 Sun Microsystems
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This 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
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#include <config.h>
#include <errno.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "viewer-x.h"
#include "renderdemo.h"
/* initialized by main() */
static Display *display;
static int screen;
static Window window;
static Pixmap pixmap;
/* initialized by do_init() */
static PangoContext *context;
static int width, height;
/* runtime stuff */
static Region update_region = NULL;
static gboolean show_borders;
static void
update (void)
{
GC gc;
XRectangle extents;
int width, height;
XClipBox (update_region, &extents);
width = extents.width;
height = extents.height;
gc = XCreateGC (display, pixmap, 0, NULL);
XCopyArea (display, pixmap, window, gc,
extents.x, extents.y,
extents.width, extents.height,
extents.x, extents.y);
XFreeGC (display, gc);
XDestroyRegion (update_region);
update_region = NULL;
}
static void
expose (XExposeEvent *xev)
{
XRectangle r;
if (!update_region)
update_region = XCreateRegion ();
r.x = xev->x;
r.y = xev->y;
r.width = xev->width;
r.height = xev->height;
XUnionRectWithRegion (&r, update_region, update_region);
}
int
main (int argc, char **argv)
{
XEvent xev;
unsigned long bg;
XSizeHints size_hints;
unsigned int quit_keycode;
unsigned int borders_keycode;
g_type_init();
parse_options (argc, argv);
display = XOpenDisplay (NULL);
if (!display)
fail ("Cannot open display %s\n", XDisplayName (NULL));
screen = DefaultScreen (display);
do_init (display, screen, opt_dpi, &context, &width, &height);
bg = WhitePixel (display, screen);
window = XCreateSimpleWindow (display, DefaultRootWindow (display),
0, 0, width, height, 0,
bg, bg);
pixmap = XCreatePixmap (display, window, width, height,
DefaultDepth (display, screen));
XSelectInput (display, window, ExposureMask | KeyPressMask);
XMapWindow (display, window);
XmbSetWMProperties (display, window,
get_options_string (),
NULL, NULL, 0, NULL, NULL, NULL);
memset ((char *)&size_hints, 0, sizeof (XSizeHints));
size_hints.flags = PSize | PMaxSize;
size_hints.width = width; size_hints.height = height; /* for compat only */
size_hints.max_width = width; size_hints.max_height = height;
XSetWMNormalHints (display, window, &size_hints);
borders_keycode = XKeysymToKeycode(display, 'B');
quit_keycode = XKeysymToKeycode(display, 'Q');
do_render (display, screen, window, pixmap, context, width, height, show_borders);
while (1)
{
if (!XPending (display) && update_region)
update ();
XNextEvent (display, &xev);
switch (xev.xany.type) {
case KeyPress:
if (xev.xkey.keycode == quit_keycode)
goto done;
else if (xev.xkey.keycode == borders_keycode)
{
XRectangle r;
show_borders = !show_borders;
do_render (display, screen, window, pixmap, context, width, height, show_borders);
if (!update_region)
update_region = XCreateRegion ();
r.x = 0;
r.y = 0;
r.width = width;
r.height = height;
XUnionRectWithRegion (&r, update_region, update_region);
}
break;
case Expose:
expose (&xev.xexpose);
break;
}
}
done:
g_object_unref (context);
XFreePixmap (display, pixmap);
finalize ();
return 0;
}
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