static cairo_t *
gdk_cairo_create (GdkDrawable *drawable)
{
int width, height;
cairo_t *cr = NULL;
cairo_surface_t *surface = NULL;
GdkVisual *visual = gdk_drawable_get_visual (drawable);
gdk_drawable_get_size (drawable, &width, &height);
if (visual)
surface = cairo_xlib_surface_create (GDK_DRAWABLE_XDISPLAY (drawable),
GDK_DRAWABLE_XID (drawable),
GDK_VISUAL_XVISUAL (visual),
width, height);
else if (gdk_drawable_get_depth (drawable) == 1)
surface = cairo_xlib_surface_create_for_bitmap
(GDK_PIXMAP_XDISPLAY (drawable),
GDK_PIXMAP_XID (drawable),
GDK_SCREEN_XSCREEN (gdk_drawable_get_screen (drawable)),
width, height);
else {
g_warning ("Using Cairo rendering requires the drawable argument to\n"
"have a specified colormap. All windows have a colormap,\n"
"however, pixmaps only have colormap by default if they\n"
"were created with a non-NULL window argument. Otherwise\n"
"a colormap must be set on them with "
"gdk_drawable_set_colormap");
return NULL;
}
if (surface) {
cr = cairo_create (surface);
cairo_surface_destroy (surface);
}
return cr;
}
GdkPixbuf*
meta_gdk_pixbuf_get_from_pixmap (GdkPixbuf *dest,
Pixmap xpixmap,
int src_x,
int src_y,
int dest_x,
int dest_y,
int width,
int height)
{
cairo_surface_t *surface;
Display *display;
Window root_return;
int x_ret, y_ret;
unsigned int w_ret, h_ret, bw_ret, depth_ret;
XWindowAttributes attrs;
GdkPixbuf *retval;
display = GDK_DISPLAY_XDISPLAY (gdk_display_get_default ());
if (!XGetGeometry (display, xpixmap, &root_return,
&x_ret, &y_ret, &w_ret, &h_ret, &bw_ret, &depth_ret))
return NULL;
if (depth_ret == 1)
{
surface = cairo_xlib_surface_create_for_bitmap (display,
xpixmap,
GDK_SCREEN_XSCREEN (gdk_screen_get_default ()),
w_ret,
h_ret);
}
else
{
if (!XGetWindowAttributes (display, root_return, &attrs))
return NULL;
surface = cairo_xlib_surface_create (display,
xpixmap,
attrs.visual,
w_ret, h_ret);
}
retval = gdk_pixbuf_get_from_surface (surface,
src_x,
src_y,
width,
height);
cairo_surface_destroy (surface);
return retval;
}
