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cssnode: Always return correct style values

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If CSS values are queried from a widget, recompute them if necessary. Do
not emit style-updated until the validation phase however.

This way, we don't run into performance traps when style-update causes
invalidations that cause new style-updated to be emitted.
This commit is contained in:
Benjamin Otte 2015-02-22 23:11:22 +01:00
parent 3d1e2a0558
commit df51bc836b
2 changed files with 34 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

42
gtk/gtkcsswidgetnode.c
View File

@ -33,16 +33,35 @@
G_DEFINE_TYPE (GtkCssWidgetNode, gtk_css_widget_node, GTK_TYPE_CSS_NODE)
static void
gtk_css_widget_node_finalize (GObject *object)
{
GtkCssWidgetNode *node = GTK_CSS_WIDGET_NODE (object);
_gtk_bitmask_free (node->accumulated_changes);
G_OBJECT_CLASS (gtk_css_widget_node_parent_class)->finalize (object);
}
static GtkCssStyle *
gtk_css_widget_node_update_style (GtkCssNode *cssnode,
GtkCssChange pending_change,
gint64 timestamp,
GtkCssStyle *old_style)
{
if (old_style == NULL)
return GTK_CSS_NODE_CLASS (gtk_css_widget_node_parent_class)->update_style (cssnode, pending_change, timestamp, old_style);
GtkCssWidgetNode *node;
GtkCssStyle *new_style;
GtkBitmask *diff;
return NULL;
node = GTK_CSS_WIDGET_NODE (cssnode);
new_style = GTK_CSS_NODE_CLASS (gtk_css_widget_node_parent_class)->update_style (cssnode, pending_change, timestamp, old_style);
diff = gtk_css_style_get_difference (new_style, old_style);
node->accumulated_changes = _gtk_bitmask_union (node->accumulated_changes, diff);
_gtk_bitmask_free (diff);
return new_style;
}
static gboolean
@ -170,13 +189,17 @@ gtk_css_widget_node_validate (GtkCssNode *node,
new_style = g_object_ref (style);
}
changes = gtk_css_style_get_difference (new_style, style);
if (GTK_IS_CSS_ANIMATED_STYLE (new_style) &&
!gtk_css_animated_style_is_static (GTK_CSS_ANIMATED_STYLE (new_style)))
gtk_css_node_set_invalid (node, TRUE);
gtk_style_context_validate (context, changes);
changes = gtk_css_style_get_difference (new_style, style);
widget_node->accumulated_changes = _gtk_bitmask_union (widget_node->accumulated_changes, changes);
_gtk_bitmask_free (changes);
gtk_style_context_validate (context, widget_node->accumulated_changes);
_gtk_bitmask_free (widget_node->accumulated_changes);
widget_node->accumulated_changes = _gtk_bitmask_new ();
if (_gtk_bitmask_is_empty (changes) && !GTK_IS_CSS_ANIMATED_STYLE (new_style))
{
@ -184,8 +207,6 @@ gtk_css_widget_node_validate (GtkCssNode *node,
new_style = NULL;
}
_gtk_bitmask_free (changes);
return new_style;
}
@ -306,7 +327,9 @@ static void
gtk_css_widget_node_class_init (GtkCssWidgetNodeClass *klass)
{
GtkCssNodeClass *node_class = GTK_CSS_NODE_CLASS (klass);
GObjectClass *object_class = G_OBJECT_CLASS (klass);
object_class->finalize = gtk_css_widget_node_finalize;
node_class->update_style = gtk_css_widget_node_update_style;
node_class->validate = gtk_css_widget_node_validate;
node_class->queue_validate = gtk_css_widget_node_queue_validate;
@ -319,8 +342,9 @@ gtk_css_widget_node_class_init (GtkCssWidgetNodeClass *klass)
}
static void
gtk_css_widget_node_init (GtkCssWidgetNode *cssnode)
gtk_css_widget_node_init (GtkCssWidgetNode *node)
{
node->accumulated_changes = _gtk_bitmask_new ();
}
GtkCssNode *

1
gtk/gtkcsswidgetnodeprivate.h
View File

@ -39,6 +39,7 @@ struct _GtkCssWidgetNode
GtkWidget *widget;
guint validate_cb_id;
GtkBitmask *accumulated_changes;
};
struct _GtkCssWidgetNodeClass