[gtk+/gtk-style-context] Add corners to GtkJunctionSides, defining sides as 2 corners.

[Carlos Garnacho <carlosg src gnome org>]

commit 69b48dbe2608edb07b4c556680f521b985edb12b
Author: Carlos Garnacho <carlosg gnome org>
Date:   Wed Nov 17 02:38:31 2010 +0100

    Add corners to GtkJunctionSides, defining sides as 2 corners.

 gtk/gtkenums.h |   16 ++++++++++++----
 1 files changed, 12 insertions(+), 4 deletions(-)
---
diff --git a/gtk/gtkenums.h b/gtk/gtkenums.h
index 4330448..f00312c 100644
--- a/gtk/gtkenums.h
+++ b/gtk/gtkenums.h
@@ -629,6 +629,10 @@ typedef enum {
 /**
  * GtkJunctionSides:
  * @GTK_JUNCTION_NONE: No junctions.
+ * @GTK_JUNCTION_CORNER_TOPLEFT: Element connects on the top-left corner.
+ * @GTK_JUNCTION_CORNER_TOPRIGHT: Element connects on the top-right corner.
+ * @GTK_JUNCTION_CORNER_BOTTOMLEFT: Element connects on the bottom-left corner.
+ * @GTK_JUNCTION_CORNER_BOTTOMRIGHT: Element connects on the bottom-right corner.
  * @GTK_JUNCTION_TOP: Element connects on the top side.
  * @GTK_JUNCTION_BOTTOM: Element connects on the bottom side.
  * @GTK_JUNCTION_LEFT: Element connects on the left side.
@@ -638,10 +642,14 @@ typedef enum {
  */
 typedef enum {
   GTK_JUNCTION_NONE   = 0,
-  GTK_JUNCTION_TOP    = 1 << 0,
-  GTK_JUNCTION_BOTTOM = 1 << 1,
-  GTK_JUNCTION_LEFT   = 1 << 2,
-  GTK_JUNCTION_RIGHT  = 1 << 3
+  GTK_JUNCTION_CORNER_TOPLEFT = 1 << 0,
+  GTK_JUNCTION_CORNER_TOPRIGHT = 1 << 1,
+  GTK_JUNCTION_CORNER_BOTTOMLEFT = 1 << 2,
+  GTK_JUNCTION_CORNER_BOTTOMRIGHT = 1 << 3,
+  GTK_JUNCTION_TOP    = (GTK_JUNCTION_CORNER_TOPLEFT | GTK_JUNCTION_CORNER_TOPRIGHT),
+  GTK_JUNCTION_BOTTOM = (GTK_JUNCTION_CORNER_BOTTOMLEFT | GTK_JUNCTION_CORNER_BOTTOMRIGHT),
+  GTK_JUNCTION_LEFT   = (GTK_JUNCTION_CORNER_TOPLEFT | GTK_JUNCTION_CORNER_BOTTOMLEFT),
+  GTK_JUNCTION_RIGHT  = (GTK_JUNCTION_CORNER_TOPRIGHT | GTK_JUNCTION_CORNER_BOTTOMRIGHT)
 } GtkJunctionSides;
 
 typedef enum {