static void
yield_and_finish (VALUE self)
{
cairo_device_t *device;
rb_yield (self);
device = _SELF;
if (!cairo_device_get_user_data (device, &cr_finished_key))
cr_device_finish (self);
}
static cairo_surface_t *
_cairo_boilerplate_xcb_create_similar (cairo_surface_t *other,
cairo_content_t content,
int width, int height)
{
cairo_device_t *device = cairo_surface_get_device (other);
struct xcb_info *info = cairo_device_get_user_data (device, &key);
xcb_screen_t *root;
cairo_surface_t *surface;
struct similar *similar;
xcb_render_pictforminfo_t *render_format;
int depth;
similar = malloc (sizeof (*similar));
switch (content) {
default:
case CAIRO_CONTENT_COLOR_ALPHA:
depth = 32;
render_format = info->render_format[0];
break;
case CAIRO_CONTENT_COLOR:
depth = 24;
render_format = info->render_format[1];
break;
case CAIRO_CONTENT_ALPHA:
depth = 8;
render_format = info->render_format[2];
break;
}
similar->connection =
cairo_xcb_device_get_connection (cairo_surface_get_device(other));
similar->pixmap = xcb_generate_id (similar->connection);
root = xcb_setup_roots_iterator(xcb_get_setup(similar->connection)).data;
xcb_create_pixmap (similar->connection, depth,
similar->pixmap, root->root,
width, height);
surface = cairo_xcb_surface_create_with_xrender_format (similar->connection,
root,
similar->pixmap,
render_format,
width, height);
cairo_surface_set_user_data (surface, &key, similar, _destroy_similar);
return surface;
}
static VALUE
cr_device_finish (VALUE self)
{
cairo_device_t *device;
rb_cairo__io_callback_closure_t *closure;
device = _SELF;
closure = cairo_device_get_user_data (device, &cr_closure_key);
cairo_device_finish (device);
cairo_device_set_user_data (device, &cr_finished_key, (void *)CR_TRUE, NULL);
cairo_device_set_user_data (device, &cr_object_holder_key, NULL, NULL);
if (closure && !NIL_P (closure->error))
rb_exc_raise (closure->error);
cr_device_check_status (device);
return self;
}