/* Invalidate style to recompute styles */
static void _xfdashboard_actor_stylable_invalidate(XfdashboardStylable *inStylable)
{
XfdashboardActor *self;
XfdashboardActorPrivate *priv;
XfdashboardActorClass *klass;
XfdashboardTheme *theme;
XfdashboardThemeCSS *themeCSS;
GHashTable *possibleStyleSet;
GParamSpec *paramSpec;
GHashTableIter hashIter;
GHashTable *themeStyleSet;
gchar *styleName;
XfdashboardThemeCSSValue *styleValue;
gboolean didChange;
#ifdef DEBUG
gboolean doDebug=FALSE;
#endif
g_return_if_fail(XFDASHBOARD_IS_ACTOR(inStylable));
self=XFDASHBOARD_ACTOR(inStylable);
priv=self->priv;
klass=XFDASHBOARD_ACTOR_GET_CLASS(self);
didChange=FALSE;
/* Only recompute style for mapped actors or if revalidation was forced */
if(!priv->forceStyleRevalidation && !clutter_actor_is_mapped(CLUTTER_ACTOR(self))) return;
/* Get theme CSS */
theme=xfdashboard_application_get_theme(NULL);
themeCSS=xfdashboard_theme_get_css(theme);
/* First get list of all stylable properties of this and parent classes.
* It is used to determine if key in theme style sets are valid.
*/
possibleStyleSet=xfdashboard_actor_get_stylable_properties_full(klass);
#ifdef DEBUG
if(doDebug)
{
gint i=0;
gchar *defaultsKey;
GValue defaultsVal=G_VALUE_INIT;
gchar *defaultsValStr;
GParamSpec *realParamSpec;
XFDASHBOARD_DEBUG(self, STYLE,
"Got param specs for %p (%s) with class '%s' and pseudo-class '%s'",
self,
G_OBJECT_TYPE_NAME(self),
priv->styleClasses,
priv->stylePseudoClasses);
g_hash_table_iter_init(&hashIter, possibleStyleSet);
while(g_hash_table_iter_next(&hashIter, (gpointer*)&defaultsKey, (gpointer*)¶mSpec))
{
realParamSpec=(GParamSpec*)g_param_spec_get_qdata(paramSpec, XFDASHBOARD_ACTOR_PARAM_SPEC_REF);
g_value_init(&defaultsVal, G_PARAM_SPEC_VALUE_TYPE(realParamSpec));
g_param_value_set_default(realParamSpec, &defaultsVal);
defaultsValStr=g_strdup_value_contents(&defaultsVal);
XFDASHBOARD_DEBUG(self, STYLE,
"%d: param spec [%s] %s=%s\n",
++i,
G_OBJECT_CLASS_NAME(klass),
defaultsKey,
defaultsValStr);
g_free(defaultsValStr);
g_value_unset(&defaultsVal);
}
XFDASHBOARD_DEBUG(self, STYLE, "End of param specs");
}
#endif
/* Get style information from theme */
themeStyleSet=xfdashboard_theme_css_get_properties(themeCSS, XFDASHBOARD_STYLABLE(self));
#ifdef DEBUG
if(doDebug)
{
gint i=0;
XFDASHBOARD_DEBUG(self, STYLE,
"Got styles from theme for %p (%s) with class '%s' and pseudo-class '%s'",
self,
G_OBJECT_TYPE_NAME(self),
priv->styleClasses,
priv->stylePseudoClasses);
g_hash_table_iter_init(&hashIter, themeStyleSet);
while(g_hash_table_iter_next(&hashIter, (gpointer*)&styleName, (gpointer*)&styleValue))
{
XFDASHBOARD_DEBUG(self, STYLE,
"%d: [%s] %s=%s\n",
++i,
styleValue->source,
(gchar*)styleName,
styleValue->string);
}
XFDASHBOARD_DEBUG(self, STYLE, "End of styles from theme");
}
#endif
/* The 'property-changed' notification will be freezed and thawed
* (fired at once) after all stylable properties of this instance are set.
*/
g_object_freeze_notify(G_OBJECT(self));
/* Iterate through style information retrieved from theme and
* set the corresponding property in object instance if key
* is valid.
*/
g_hash_table_iter_init(&hashIter, themeStyleSet);
while(g_hash_table_iter_next(&hashIter, (gpointer*)&styleName, (gpointer*)&styleValue))
{
GValue cssValue=G_VALUE_INIT;
GValue propertyValue=G_VALUE_INIT;
GParamSpec *realParamSpec;
/* Check if key is a valid object property name */
if(!g_hash_table_lookup_extended(possibleStyleSet, styleName, NULL, (gpointer*)¶mSpec)) continue;
/* Get original referenced parameter specification. It does not need
* to be referenced while converting because it is valid as this
* value is stored in hashtable.
*/
realParamSpec=(GParamSpec*)g_param_spec_get_qdata(paramSpec, XFDASHBOARD_ACTOR_PARAM_SPEC_REF);
/* Convert style value to type of object property and set value
* if conversion was successful. Otherwise do nothing.
*/
g_value_init(&cssValue, G_TYPE_STRING);
g_value_set_string(&cssValue, styleValue->string);
g_value_init(&propertyValue, G_PARAM_SPEC_VALUE_TYPE(realParamSpec));
if(g_param_value_convert(realParamSpec, &cssValue, &propertyValue, FALSE))
{
g_object_set_property(G_OBJECT(self), styleName, &propertyValue);
didChange=TRUE;
#ifdef DEBUG
if(doDebug)
{
gchar *valstr;
valstr=g_strdup_value_contents(&propertyValue);
XFDASHBOARD_DEBUG(self, STYLE,
"Setting theme value of style property [%s] %s=%s\n",
G_OBJECT_CLASS_NAME(klass),
styleName,
valstr);
g_free(valstr);
}
#endif
}
else
{
g_warning(_("Could not transform CSS string value for property '%s' to type %s of class %s"),
styleName, g_type_name(G_PARAM_SPEC_VALUE_TYPE(realParamSpec)), G_OBJECT_CLASS_NAME(klass));
}
/* Release allocated resources */
g_value_unset(&propertyValue);
g_value_unset(&cssValue);
}
/* Now remove all duplicate keys in set of properties changed we set the last
* time. The remaining keys determine the properties which were set the last
* time but not this time and should be restored to their default values.
*/
if(priv->lastThemeStyleSet)
{
/* Remove duplicate keys from set of last changed properties */
g_hash_table_foreach_remove(priv->lastThemeStyleSet, (GHRFunc)_xfdashboard_actor_hashtable_is_duplicate_key, themeStyleSet);
/* Iterate through remaining key and restore corresponding object properties
* to their default values.
*/
g_hash_table_iter_init(&hashIter, priv->lastThemeStyleSet);
while(g_hash_table_iter_next(&hashIter, (gpointer*)&styleName, (gpointer*)¶mSpec))
{
GValue propertyValue=G_VALUE_INIT;
GParamSpec *realParamSpec;
/* Check if key is a valid object property name */
if(!g_hash_table_lookup_extended(possibleStyleSet, styleName, NULL, (gpointer*)¶mSpec)) continue;
/* Get original referenced parameter specification. It does not need
* to be referenced while converting because it is valid as this
* value is stored in hashtable.
*/
realParamSpec=(GParamSpec*)g_param_spec_get_qdata(paramSpec, XFDASHBOARD_ACTOR_PARAM_SPEC_REF);
/* Initialize property value to its type and default value */
g_value_init(&propertyValue, G_PARAM_SPEC_VALUE_TYPE(realParamSpec));
g_param_value_set_default(realParamSpec, &propertyValue);
/* Set value at object property */
g_object_set_property(G_OBJECT(self), styleName, &propertyValue);
didChange=TRUE;
#ifdef DEBUG
if(doDebug)
{
gchar *valstr;
valstr=g_strdup_value_contents(&propertyValue);
XFDASHBOARD_DEBUG(self, STYLE,
"Restoring default value of style property [%s] %s=%s\n",
G_OBJECT_CLASS_NAME(klass),
styleName,
valstr);
g_free(valstr);
}
#endif
/* Release allocated resources */
g_value_unset(&propertyValue);
}
/* Release resources of set of last changed properties as we do not need
* it anymore.
*/
g_hash_table_destroy(priv->lastThemeStyleSet);
priv->lastThemeStyleSet=NULL;
}
/* Remember this set of changed properties for next time to determine properties
* which need to be restored to their default value.
*/
priv->lastThemeStyleSet=themeStyleSet;
/* Release allocated resources */
g_hash_table_destroy(possibleStyleSet);
/* Force a redraw if any change was made at this actor */
if(didChange) clutter_actor_queue_redraw(CLUTTER_ACTOR(self));
/* Reset force style revalidation flag because it's done now */
priv->forceStyleRevalidation=FALSE;
/* All stylable properties are set now. So thaw 'property-changed'
* notification now and fire all notifications at once.
*/
g_object_thaw_notify(G_OBJECT(self));
}
/* Default implementation of virtual function "invalidate" */
static void _xfdashboard_stylable_real_invalidate(XfdashboardStylable *self)
{
XfdashboardTheme *theme;
XfdashboardThemeCSS *themeCSS;
GHashTable *stylableProperties;
GHashTable *themeStyleSet;
GHashTableIter hashIter;
gchar *propertyName;
GParamSpec *propertyValueParamSpec;
XfdashboardThemeCSSValue *styleValue;
g_return_if_fail(XFDASHBOARD_IS_STYLABLE(self));
/* Get hashtable with all stylable properties and their parameter
* specification for default values.
*/
stylableProperties=xfdashboard_stylable_get_stylable_properties(self);
if(!stylableProperties) return;
/* Get theme CSS */
theme=xfdashboard_application_get_theme();
themeCSS=xfdashboard_theme_get_css(theme);
/* Get styled properties from theme CSS */
themeStyleSet=xfdashboard_theme_css_get_properties(themeCSS, self);
/* The 'property-changed' notification will be freezed and thawed
* (fired at once) after all stylable properties of this instance are set.
*/
g_object_freeze_notify(G_OBJECT(self));
/* Iterate through stylable properties and check if we got a style of
* that name from theme CSS. If we find such a style set the corresponding
* property in object otherwise set default value to override any
* previous value set by theme CSS to reset it.
*/
g_hash_table_iter_init(&hashIter, stylableProperties);
while(g_hash_table_iter_next(&hashIter, (gpointer*)&propertyName, (gpointer*)&propertyValueParamSpec))
{
/* Check if we got a style with this name from theme CSS and
* set style's value if found ...
*/
if(g_hash_table_lookup_extended(themeStyleSet, propertyName, NULL, (gpointer*)&styleValue))
{
GValue cssValue=G_VALUE_INIT;
GValue propertyValue=G_VALUE_INIT;
/* Convert style value to type of object property and set value
* if conversion was successful. Otherwise do nothing.
*/
g_value_init(&cssValue, G_TYPE_STRING);
g_value_set_string(&cssValue, styleValue->string);
g_value_init(&propertyValue, G_PARAM_SPEC_VALUE_TYPE(propertyValueParamSpec));
if(g_param_value_convert(propertyValueParamSpec, &cssValue, &propertyValue, FALSE))
{
g_object_set_property(G_OBJECT(self), propertyName, &propertyValue);
}
else
{
g_warning(_("Could not transform CSS string value for property '%s' to type %s of class %s"),
propertyName,
g_type_name(G_PARAM_SPEC_VALUE_TYPE(propertyValueParamSpec)),
G_OBJECT_TYPE_NAME(self));
}
/* Release allocated resources */
g_value_unset(&propertyValue);
g_value_unset(&cssValue);
}
/* ... otherwise set property's default value we got from
* stylable interface of object.
*/
else
{
GValue propertyValue=G_VALUE_INIT;
/* Initialize property value to its type and default value */
g_value_init(&propertyValue, G_PARAM_SPEC_VALUE_TYPE(propertyValueParamSpec));
g_param_value_set_default(propertyValueParamSpec, &propertyValue);
/* Set value at object property */
g_object_set_property(G_OBJECT(self), propertyName, &propertyValue);
/* Release allocated resources */
g_value_unset(&propertyValue);
}
}
/* All stylable properties are set now. So thaw 'property-changed'
* notification now and fire all notifications at once.
*/
g_object_thaw_notify(G_OBJECT(self));
/* Release allocated resources */
g_hash_table_destroy(themeStyleSet);
g_hash_table_destroy(stylableProperties);
}
