Draggable region support for frameless app window on GTK.

chrome/browser/ui/gtk/extensions/shell_window_gtk.h

Index: chrome/browser/ui/gtk/extensions/shell_window_gtk.h
diff --git a/chrome/browser/ui/gtk/extensions/shell_window_gtk.h b/chrome/browser/ui/gtk/extensions/shell_window_gtk.h
index 432edd14c938c239c743303f5c6d4a58cc75c23d..535ba98b2c1927b980b76b77d8c6171bb73a5b24 100644
--- a/chrome/browser/ui/gtk/extensions/shell_window_gtk.h
+++ b/chrome/browser/ui/gtk/extensions/shell_window_gtk.h
@@ -10,13 +10,17 @@
 #include "chrome/browser/ui/extensions/shell_window.h"
 #include "chrome/browser/ui/gtk/extensions/extension_view_gtk.h"
 #include "ui/base/gtk/gtk_signal.h"
+#include "ui/base/ui_base_types.h"
 #include "ui/base/x/active_window_watcher_x_observer.h"
+#include "ui/base/x/x11_util.h"
 #include "ui/gfx/rect.h"
+#include "third_party/skia/include/core/SkRegion.h"
 
 class Profile;
 
 namespace extensions {
 class Extension;
+struct DraggableRegion;
 }
 
 class ShellWindowGtk : public ShellWindow,
@@ -55,6 +59,8 @@ class ShellWindowGtk : public ShellWindow,
   // ShellWindow implementation.
   virtual void SetFullscreen(bool fullscreen) OVERRIDE;
   virtual bool IsFullscreenOrPending() const OVERRIDE;
+  virtual void UpdateDraggableRegions(
+      const std::vector<extensions::DraggableRegion>& regions) OVERRIDE;
 
   virtual ~ShellWindowGtk();
 
@@ -64,6 +70,8 @@ class ShellWindowGtk : public ShellWindow,
                        GdkEventConfigure*);
   CHROMEGTK_CALLBACK_1(ShellWindowGtk, gboolean, OnWindowState,
                        GdkEventWindowState*);
+  CHROMEGTK_CALLBACK_1(ShellWindowGtk, gboolean, OnButtonPress,
+                       GdkEventButton*);
 
   GtkWindow* window_;
   GdkWindowState state_;
@@ -83,6 +91,22 @@ class ShellWindowGtk : public ShellWindow,
   // fullscreen, however: some WMs don't support fullscreen.
   bool content_thinks_its_fullscreen_;
 
+  // The region is treated as title bar, can be dragged to move
+  // and double clicked to maximize.
+  SkRegion draggable_region_;
+
+  // If true, don't call gdk_window_raise() when we get a click in the title
+  // bar or window border.  This is to work around a compiz bug.
+  bool suppress_window_raise_;
+
+  // Keep track of the last click time and the last click position so we can
+  // filter out extra GDK_BUTTON_PRESS events when a double click happens.
+  guint32 last_click_time_;
+  gfx::Point last_click_position_;
+
+  // True if the window shows without frame.
+  bool frameless_;
+
   DISALLOW_COPY_AND_ASSIGN(ShellWindowGtk);
 };