/**
* st_theme_context_get_root_node:
* @context: a #StThemeContext
*
* Gets the root node of the tree of theme style nodes that associated with this
* context. For the node tree associated with a stage, this node represents
* styles applied to the stage itself.
*
* Return value: (transfer none): the root node of the context's style tree
*/
StThemeNode *
st_theme_context_get_root_node (StThemeContext *context)
{
if (context->root_node == NULL)
context->root_node = st_theme_node_new (context, NULL, context->theme,
G_TYPE_NONE, NULL, NULL, NULL, NULL);
return context->root_node;
}
/**
* st_widget_get_theme_node:
* @widget: a #StWidget
*
* Gets the theme node holding style information for the widget.
* The theme node is used to access standard and custom CSS
* properties of the widget.
*
* Return value: (transfer none): the theme node for the widget.
* This is owned by the widget. When attributes of the widget
* or the environment that affect the styling change (for example
* the style_class property of the widget), it will be recreated,
* and the ::style-changed signal will be emitted on the widget.
*/
StThemeNode *
st_widget_get_theme_node (StWidget *widget)
{
StWidgetPrivate *priv = widget->priv;
if (priv->theme_node == NULL)
{
StThemeNode *parent_node = NULL;
ClutterStage *stage = NULL;
ClutterActor *parent;
parent = clutter_actor_get_parent (CLUTTER_ACTOR (widget));
while (parent != NULL)
{
if (parent_node == NULL && ST_IS_WIDGET (parent))
parent_node = st_widget_get_theme_node (ST_WIDGET (parent));
else if (CLUTTER_IS_STAGE (parent))
stage = CLUTTER_STAGE (parent);
parent = clutter_actor_get_parent (parent);
}
if (stage == NULL)
{
g_error ("st_widget_get_theme_node called on a widget not in a stage");
}
if (parent_node == NULL)
parent_node = get_root_theme_node (CLUTTER_STAGE (stage));
priv->theme_node = st_theme_node_new (st_theme_context_get_for_stage (stage),
parent_node, priv->theme,
G_OBJECT_TYPE (widget),
clutter_actor_get_name (CLUTTER_ACTOR (widget)),
priv->style_class,
priv->pseudo_class,
priv->inline_style);
}
return priv->theme_node;
}