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stylecontext: Optimize the common case of "style didn't change"

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This commit is contained in:
Benjamin Otte 2012-03-23 01:52:38 +01:00
parent ece9d2fd92
commit eb537b60f4
1 changed files with 42 additions and 0 deletions
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42
gtk/gtkstylecontext.c
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@ -301,6 +301,10 @@
* </refsect2>
*/
/* When these change we do a full restyling. Otherwise we try to figure out
* if we need to change things. */
#define GTK_STYLE_CONTEXT_RADICAL_CHANGE (GTK_CSS_CHANGE_NAME | GTK_CSS_CHANGE_CLASS)
typedef struct GtkStyleInfo GtkStyleInfo;
typedef struct GtkRegion GtkRegion;
typedef struct PropertyValue PropertyValue;
@ -376,6 +380,8 @@ struct _GtkStyleContextPrivate
GtkTextDirection direction;
GtkCssChange relevant_changes;
guint animations_invalidated : 1;
guint invalidating_context : 1;
};
@ -635,6 +641,7 @@ gtk_style_context_init (GtkStyleContext *style_context)
priv->screen = gdk_screen_get_default ();
priv->cascade = _gtk_style_cascade_get_for_screen (priv->screen);
g_object_ref (priv->cascade);
priv->relevant_changes = GTK_CSS_CHANGE_ANY;
/* Create default info store */
info = style_info_new ();
@ -3239,9 +3246,42 @@ void
_gtk_style_context_queue_invalidate (GtkStyleContext *context,
GtkCssChange change)
{
GtkStyleContextPrivate *priv;
g_return_if_fail (GTK_IS_STYLE_CONTEXT (context));
g_return_if_fail (change != 0);
priv = context->priv;
if (priv->widget == NULL && priv->widget_path == NULL)
return;
/* Try to avoid invalidating if we can */
if (change & GTK_STYLE_CONTEXT_RADICAL_CHANGE)
{
priv->relevant_changes = GTK_CSS_CHANGE_ANY;
}
else
{
if (priv->relevant_changes == GTK_CSS_CHANGE_ANY)
{
GtkWidgetPath *path;
GtkCssMatcher matcher;
path = create_query_path (context);
_gtk_css_matcher_init (&matcher, path, priv->current_state);
priv->relevant_changes = _gtk_style_provider_private_get_change (GTK_STYLE_PROVIDER_PRIVATE (priv->cascade),
&matcher);
priv->relevant_changes &= ~GTK_STYLE_CONTEXT_RADICAL_CHANGE;
gtk_widget_path_unref (path);
}
if ((priv->relevant_changes & change) == 0)
return;
}
gtk_style_context_invalidate (context);
}
@ -3276,6 +3316,8 @@ gtk_style_context_invalidate (GtkStyleContext *context)
g_hash_table_remove_all (priv->style_data);
priv->current_data = NULL;
priv->relevant_changes = GTK_CSS_CHANGE_ANY;
g_signal_emit (context, signals[CHANGED], 0);
priv->invalidating_context = FALSE;