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#include <cairo.h>
#include <cairo-script-interpreter.h>
#include <stdio.h>
#include <stdlib.h>
static const cairo_user_data_key_t _key;
#if CAIRO_HAS_XLIB_XRENDER_SURFACE
#include <cairo-xlib.h>
#include <cairo-xlib-xrender.h>
static Display *
_get_display (void)
{
static Display *dpy;
if (dpy != NULL)
return dpy;
dpy = XOpenDisplay (NULL);
if (dpy == NULL) {
fprintf (stderr, "Failed to open display.\n");
exit (1);
}
return dpy;
}
static void
_destroy_window (void *closure)
{
XFlush (_get_display ());
XDestroyWindow (_get_display(), (Window) closure);
}
static cairo_surface_t *
_surface_create (void *closure,
double width, double height)
{
Display *dpy;
Visual *visual;
XRenderPictFormat *xrender_format;
XSetWindowAttributes attr;
Window w;
cairo_surface_t *surface;
dpy = _get_display ();
visual = DefaultVisual (dpy, DefaultScreen (dpy));
xrender_format = XRenderFindVisualFormat (dpy, visual);
if (xrender_format == NULL) {
fprintf (stderr, "X server does not have the Render extension.\n");
exit (1);
}
attr.override_redirect = True;
w = XCreateWindow (dpy, DefaultRootWindow (dpy), 0, 0,
width, height, 0, xrender_format->depth,
InputOutput, visual, CWOverrideRedirect, &attr);
XMapWindow (dpy, w);
surface = cairo_xlib_surface_create_with_xrender_format (dpy, w,
DefaultScreenOfDisplay (dpy),
xrender_format,
width, height);
cairo_surface_set_user_data (surface, &_key, (void *) w, _destroy_window);
return surface;
}
#else
/* fallback: just use an image surface */
static cairo_surface_t *
_surface_create (void *closure,
double width, double height)
{
return cairo_image_surface_create (CAIRO_FORMAT_ARGB32, width, height);
}
#endif
int
main (int argc, char **argv)
{
cairo_script_interpreter_t *csi;
const cairo_script_interpreter_hooks_t hooks = {
.surface_create = _surface_create
};
csi = cairo_script_interpreter_create ();
cairo_script_interpreter_install_hooks (csi, &hooks);
cairo_script_interpreter_run (csi, argv[1]);
return cairo_script_interpreter_destroy (csi);
}
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