/**
* meta_background_actor_get_clip_region:
* @self: a #MetaBackgroundActor
*
* Return value (transfer full): a #cairo_region_t that represents the part of
* the background not obscured by other #MetaBackgroundActor or
* #MetaWindowActor objects.
*/
cairo_region_t *
meta_background_actor_get_clip_region (MetaBackgroundActor *self)
{
MetaBackgroundActorPrivate *priv = self->priv;
ClutterActorBox content_box;
cairo_rectangle_int_t content_area = { 0 };
cairo_region_t *clip_region;
g_return_val_if_fail (META_IS_BACKGROUND_ACTOR (self), NULL);
if (!priv->clip_region)
return NULL;
clutter_actor_get_content_box (CLUTTER_ACTOR (self), &content_box);
content_area.x = content_box.x1;
content_area.y = content_box.y1;
content_area.width = content_box.x2 - content_box.x1;
content_area.height = content_box.y2 - content_box.y1;
clip_region = cairo_region_create_rectangle (&content_area);
cairo_region_intersect (clip_region, priv->clip_region);
return clip_region;
}
static void
clutter_image_paint_content (ClutterContent *content,
ClutterActor *actor,
ClutterPaintNode *root)
{
ClutterImagePrivate *priv = CLUTTER_IMAGE (content)->priv;
ClutterScalingFilter min_f, mag_f;
ClutterContentRepeat repeat;
ClutterPaintNode *node;
ClutterActorBox box;
ClutterColor color;
guint8 paint_opacity;
if (priv->texture == NULL)
return;
clutter_actor_get_content_box (actor, &box);
paint_opacity = clutter_actor_get_paint_opacity (actor);
clutter_actor_get_content_scaling_filters (actor, &min_f, &mag_f);
repeat = clutter_actor_get_content_repeat (actor);
/* ClutterTextureNode will premultiply the blend color, so we
* want it to be white with the paint opacity
*/
color.red = 255;
color.green = 255;
color.blue = 255;
color.alpha = paint_opacity;
node = clutter_texture_node_new (priv->texture, &color, min_f, mag_f);
clutter_paint_node_set_name (node, "Image");
if (repeat == CLUTTER_REPEAT_NONE)
clutter_paint_node_add_rectangle (node, &box);
else
{
float t_w = 1.f, t_h = 1.f;
if ((repeat & CLUTTER_REPEAT_X_AXIS) != FALSE)
t_w = (box.x2 - box.x1) / cogl_texture_get_width (priv->texture);
if ((repeat & CLUTTER_REPEAT_Y_AXIS) != FALSE)
t_h = (box.y2 - box.y1) / cogl_texture_get_height (priv->texture);
clutter_paint_node_add_texture_rectangle (node, &box,
0.f, 0.f,
t_w, t_h);
}
clutter_paint_node_add_child (root, node);
clutter_paint_node_unref (node);
}
