[gtk+] stylecontext: Add a flag to force style_updated() emission

[Benjamin Otte <otte src gnome org>]

commit 6d3b4d93821fdcb3a4fca506c487a6319a73ec6c
Author: Benjamin Otte <otte redhat com>
Date:   Wed Nov 14 13:24:58 2012 +0100

    stylecontext: Add a flag to force style_updated() emission
    
    This is used in gtk_widget_reset_style() (via GTK_CSS_CHANGE_ANY) now,
    and that makes GtkSettings font related changes work again.

 gtk/gtkcsstypesprivate.h |    5 +++--
 gtk/gtkstylecontext.c    |    2 +-
 2 files changed, 4 insertions(+), 3 deletions(-)
---
diff --git a/gtk/gtkcsstypesprivate.h b/gtk/gtkcsstypesprivate.h
index 55ad3b5..ab360ef 100644
--- a/gtk/gtkcsstypesprivate.h
+++ b/gtk/gtkcsstypesprivate.h
@@ -49,10 +49,11 @@ typedef enum { /*< skip >*/
   GTK_CSS_CHANGE_PARENT_SIBLING_STATE     = (1 << 15),
   /* add more */
   GTK_CSS_CHANGE_SOURCE                   = (1 << 16),
-  GTK_CSS_CHANGE_ANIMATE                  = (1 << 17)
+  GTK_CSS_CHANGE_ANIMATE                  = (1 << 17),
+  GTK_CSS_CHANGE_FORCE_INVALIDATE         = (1 << 18)
 } GtkCssChange;
 
-#define GTK_CSS_CHANGE_ANY ((1 << 18) - 1)
+#define GTK_CSS_CHANGE_ANY ((1 << 19) - 1)
 #define GTK_CSS_CHANGE_ANY_SELF (GTK_CSS_CHANGE_CLASS | GTK_CSS_CHANGE_NAME | GTK_CSS_CHANGE_POSITION | GTK_CSS_CHANGE_STATE)
 #define GTK_CSS_CHANGE_ANY_SIBLING (GTK_CSS_CHANGE_SIBLING_CLASS | GTK_CSS_CHANGE_SIBLING_NAME | \
                                     GTK_CSS_CHANGE_SIBLING_POSITION | GTK_CSS_CHANGE_SIBLING_STATE)
diff --git a/gtk/gtkstylecontext.c b/gtk/gtkstylecontext.c
index c0253a4..8a193cc 100644
--- a/gtk/gtkstylecontext.c
+++ b/gtk/gtkstylecontext.c
@@ -3180,7 +3180,7 @@ _gtk_style_context_validate (GtkStyleContext  *context,
       _gtk_bitmask_free (animation_changes);
     }
 
-  if (!_gtk_bitmask_is_empty (changes))
+  if (!_gtk_bitmask_is_empty (changes) || (change & GTK_CSS_CHANGE_FORCE_INVALIDATE))
     gtk_style_context_do_invalidate (context);
 
   change = _gtk_css_change_for_child (change);