cssnode: Change style-changed signal

Instead of having old and new style, now have a GtkCssStyleChange opaque
object that will compute the changes you are interested in for you.

This simplifies change signal handlers quite a bit and avoids lots of
repeated computation in every signal handler.

1 files changed, 4 insertions, 16 deletions

diff --git a/gtk/gtkprogressbar.c b/gtk/gtkprogressbar.c
index 2b325e1b6e..0a845a0148 100644
--- a/gtk/gtkprogressbar.c
+++ b/gtk/gtkprogressbar.c
@@ -345,26 +345,14 @@ gtk_progress_bar_class_init (GtkProgressBarClass *class)
 }
 
 static void
-node_style_changed_cb (GtkCssNode  *node,
-                       GtkCssStyle *old_style,
-                       GtkCssStyle *new_style,
-                       GtkWidget   *widget)
+node_style_changed_cb (GtkCssNode        *node,
+                       GtkCssStyleChange *change,
+                       GtkWidget         *widget)
 {
-  GtkBitmask *changes;
-  static GtkBitmask *affects_size = NULL;
-
-  if (G_UNLIKELY (affects_size == NULL))
-    affects_size = _gtk_css_style_property_get_mask_affecting (GTK_CSS_AFFECTS_SIZE | GTK_CSS_AFFECTS_CLIP);
-
-  changes = _gtk_bitmask_new ();
-  changes = gtk_css_style_add_difference (changes, old_style, new_style);
-
-  if (_gtk_bitmask_intersects (changes, affects_size))
+  if (gtk_css_style_change_affects (change, GTK_CSS_AFFECTS_SIZE | GTK_CSS_AFFECTS_CLIP))
     gtk_widget_queue_resize (widget);
   else
     gtk_widget_queue_draw (widget);
-
-  _gtk_bitmask_free (changes);
 }
 
 static void