[gtk+/client-side-decorations] Add 'decoration-corner-radius' style property.

[Cody Russell <bratsche src gnome org>]

commit 74352ac6169257fcd5f11cc358b402bd100c9c7c
Author: Cody Russell <bratsche gnome org>
Date:   Wed May 19 15:25:32 2010 -0500

    Add 'decoration-corner-radius' style property.

 gtk/gtkstyle.c  |   10 +++++++---
 gtk/gtkwindow.c |    7 +++++++
 2 files changed, 14 insertions(+), 3 deletions(-)
---
diff --git a/gtk/gtkstyle.c b/gtk/gtkstyle.c
index b48cc36..58ce5cb 100644
--- a/gtk/gtkstyle.c
+++ b/gtk/gtkstyle.c
@@ -3745,9 +3745,9 @@ paint_decorated_window (GtkStyle *style,
 {
   cairo_pattern_t *gradient;
   cairo_t *cr;
-  const double hmargin = 2.5 + x;
-  const double vmargin = 2.5 + y;
-  const double radius = 5;
+  const double hmargin = x;
+  const double vmargin = y;
+  const double radius;
   GdkColor *normal_color;
   GdkColor *selected_color;
   GdkWindowState state;
@@ -3759,6 +3759,10 @@ paint_decorated_window (GtkStyle *style,
 
   state = gdk_window_get_state (window);
 
+  gtk_widget_style_get (widget,
+                        "decoration-corner-radius", &radius,
+                        NULL);
+
   cr = gdk_cairo_create (window);
   cairo_set_operator (cr, CAIRO_OPERATOR_CLEAR);
   cairo_paint (cr);
diff --git a/gtk/gtkwindow.c b/gtk/gtkwindow.c
index 645fe3d..d404cea 100644
--- a/gtk/gtkwindow.c
+++ b/gtk/gtkwindow.c
@@ -981,6 +981,13 @@ gtk_window_class_init (GtkWindowClass *klass)
                                                              0, G_MAXINT,
                                                              20, GTK_PARAM_READWRITE));
 
+  gtk_widget_class_install_style_property (widget_class,
+                                           g_param_spec_double ("decoration-corner-radius",
+                                                                P_("Decoration corner radius"),
+                                                                P_("Decoration corner radius"),
+                                                                0, G_MAXDOUBLE,
+                                                                5.0, GTK_PARAM_READWRITE));
+
   /**
    * GtkWindow:client-side-drop-shadows:
    *