[gtk+] GtkButton: Queue a redraw on enter/leave

[Matthias Clasen <matthiasc src gnome org>]

commit d09c458cedc1dc55599de6abb8978308c1b47dcc
Author: Matthias Clasen <mclasen redhat com>
Date:   Tue Jun 24 13:21:05 2014 -0400

    GtkButton: Queue a redraw on enter/leave
    
    We currently getting a redraw for buttons, but that is just luck.
    Better to make it explicit.

 gtk/gtkbutton.c |   12 ++++++++++--
 1 files changed, 10 insertions(+), 2 deletions(-)
---
diff --git a/gtk/gtkbutton.c b/gtk/gtkbutton.c
index b07d364..ce4729b 100644
--- a/gtk/gtkbutton.c
+++ b/gtk/gtkbutton.c
@@ -134,6 +134,7 @@ static void gtk_real_button_released (GtkButton * button);
 static void gtk_real_button_clicked (GtkButton * button);
 static void gtk_real_button_activate  (GtkButton          *button);
 static void gtk_button_update_state   (GtkButton          *button);
+static void gtk_button_enter_leave    (GtkButton          *button);
 static void gtk_button_add            (GtkContainer       *container,
                                       GtkWidget          *widget);
 static GType gtk_button_child_type    (GtkContainer       *container);
@@ -237,8 +238,8 @@ gtk_button_class_init (GtkButtonClass *klass)
   klass->pressed = gtk_real_button_pressed;
   klass->released = gtk_real_button_released;
   klass->clicked = NULL;
-  klass->enter = gtk_button_update_state;
-  klass->leave = gtk_button_update_state;
+  klass->enter = gtk_button_enter_leave;
+  klass->leave = gtk_button_enter_leave;
   klass->activate = gtk_real_button_activate;
 
   props[PROP_LABEL] =
@@ -2508,6 +2509,13 @@ _gtk_button_set_depressed (GtkButton *button,
 }
 
 static void
+gtk_button_enter_leave (GtkButton *button)
+{
+  gtk_button_update_state (button);
+  gtk_widget_queue_draw (GTK_WIDGET (button));
+}
+
+static void
 gtk_button_update_state (GtkButton *button)
 {
   GtkButtonPrivate *priv = button->priv;