From d6c866b6e54ecc23417359a07b6f825c6b80eeee Mon Sep 17 00:00:00 2001
From: Matthias Clasen <mclasen@redhat.com>
Date: Sun, 6 Oct 2013 00:35:05 -0400
Subject: [PATCH] csd: add style classes for tiled and maximized

This lets us change the border radius when the window is
in one of these states.

https://bugzilla.gnome.org/show_bug.cgi?id=709215
---
 gtk/gtkwindow.c | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/gtk/gtkwindow.c b/gtk/gtkwindow.c
index 868607976a..19ec2a4222 100644
--- a/gtk/gtkwindow.c
+++ b/gtk/gtkwindow.c
@@ -6252,6 +6252,25 @@ add_window_frame_style_class (GtkStyleContext *context)
   gtk_style_context_add_class (context, "window-frame");
 }
 
+static void
+update_window_style_classes (GtkWindow *window)
+{
+  GtkWindowPrivate *priv = window->priv;
+  GtkStyleContext *context;
+
+  context = gtk_widget_get_style_context (GTK_WIDGET (window));
+
+  if (priv->tiled)
+    gtk_style_context_add_class (context, "tiled");
+  else
+    gtk_style_context_remove_class (context, "tiled");
+
+  if (gtk_window_get_maximized (window))
+    gtk_style_context_add_class (context, "maximized");
+  else
+    gtk_style_context_remove_class (context, "maximized");
+}
+
 static void
 get_decoration_size (GtkWidget *widget,
                      GtkBorder *decorations)
@@ -6878,6 +6897,7 @@ gtk_window_state_event (GtkWidget           *widget,
 
   if (event->changed_mask & (GDK_WINDOW_STATE_FULLSCREEN | GDK_WINDOW_STATE_MAXIMIZED | GDK_WINDOW_STATE_TILED))
     {
+      update_window_style_classes (window);
       update_window_buttons (window);
       gtk_widget_queue_resize (widget);
     }