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cssnode: Only recreate styles when needed

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This commit is contained in:
Benjamin Otte 2015-02-05 06:49:59 +01:00
parent 219e52f7e1
commit caf2fc9a10
1 changed files with 25 additions and 0 deletions
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25
gtk/gtkcssnode.c
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@ -19,10 +19,15 @@
#include "gtkcssnodeprivate.h" #include "gtkcssnodeprivate.h"
#include "gtkcssanimatedstyleprivate.h"
#include "gtkcsstransientnodeprivate.h" #include "gtkcsstransientnodeprivate.h"
#include "gtkdebug.h" #include "gtkdebug.h"
#include "gtksettingsprivate.h" #include "gtksettingsprivate.h"
/* When these change we do a full restyling. Otherwise we try to figure out
* if we need to change things. */
#define GTK_CSS_RADICAL_CHANGE (GTK_CSS_CHANGE_NAME | GTK_CSS_CHANGE_CLASS | GTK_CSS_CHANGE_SOURCE)
G_DEFINE_TYPE (GtkCssNode, gtk_css_node, G_TYPE_OBJECT) G_DEFINE_TYPE (GtkCssNode, gtk_css_node, G_TYPE_OBJECT)
void void
@ -222,11 +227,31 @@ gtk_css_node_create_style (GtkCssNode *cssnode)
return style; return style;
} }
static gboolean
gtk_css_style_needs_recreation (GtkCssStyle *style,
GtkCssChange change)
{
/* Try to avoid invalidating if we can */
if (change & GTK_CSS_RADICAL_CHANGE)
return TRUE;
if (GTK_IS_CSS_ANIMATED_STYLE (style))
style = GTK_CSS_ANIMATED_STYLE (style)->style;
if (gtk_css_static_style_get_change (GTK_CSS_STATIC_STYLE (style)) & change)
return TRUE;
else
return FALSE;
}
static GtkCssStyle * static GtkCssStyle *
gtk_css_node_real_update_style (GtkCssNode *cssnode, gtk_css_node_real_update_style (GtkCssNode *cssnode,
GtkCssChange pending_change, GtkCssChange pending_change,
GtkCssStyle *old_style) GtkCssStyle *old_style)
{ {
if (!gtk_css_style_needs_recreation (old_style, pending_change))
return g_object_ref (old_style);
return gtk_css_node_create_style (cssnode); return gtk_css_node_create_style (cssnode);
} }