ash: Clean up system background layer.

ui/aura/root_window_host_linux.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef UI_AURA_ROOT_WINDOW_HOST_LINUX_H_
 #define UI_AURA_ROOT_WINDOW_HOST_LINUX_H_
 
 #include <X11/Xlib.h>
 
 // Get rid of a macro from Xlib.h that conflicts with Aura's RootWindow class.
@@ skipping 18 matching lines @@
 
 class RootWindowHostLinux : public RootWindowHost,
                             public MessageLoop::Dispatcher {
  public:
   RootWindowHostLinux(const gfx::Rect& bounds);
   virtual ~RootWindowHostLinux();
 
   // Overridden from Dispatcher overrides:
   virtual bool Dispatch(const base::NativeEvent& event) OVERRIDE;
 
- private:
-  bool DispatchEventForRootWindow(const base::NativeEvent& event);
-
-  // Dispatches XI2 events. Note that some events targetted for the X root
-  // window are dispatched to the aura root window (e.g. touch events after
-  // calibration).
-  void DispatchXI2Event(const base::NativeEvent& event);
-
   // RootWindowHost Overrides.
   virtual void SetDelegate(RootWindowHostDelegate* delegate) OVERRIDE;
   virtual RootWindow* GetRootWindow() OVERRIDE;
   virtual gfx::AcceleratedWidget GetAcceleratedWidget() OVERRIDE;
   virtual void Show() OVERRIDE;
   virtual void Hide() OVERRIDE;
   virtual void ToggleFullScreen() OVERRIDE;
   virtual gfx::Rect GetBounds() const OVERRIDE;
   virtual void SetBounds(const gfx::Rect& bounds) OVERRIDE;
   virtual gfx::Point GetLocationOnNativeScreen() const OVERRIDE;
   virtual void SetCapture() OVERRIDE;
   virtual void ReleaseCapture() OVERRIDE;
   virtual void SetCursor(gfx::NativeCursor cursor_type) OVERRIDE;
   virtual bool QueryMouseLocation(gfx::Point* location_return) OVERRIDE;
   virtual bool ConfineCursorToRootWindow() OVERRIDE;
   virtual void UnConfineCursor() OVERRIDE;
   virtual void MoveCursorTo(const gfx::Point& location) OVERRIDE;
   virtual void SetFocusWhenShown(bool focus_when_shown) OVERRIDE;
+  virtual bool CopyAreaToSkCanvas(const gfx::Rect& source_bounds,
+                                  const gfx::Point& dest_offset,
+                                  SkCanvas* canvas);
   virtual bool GrabSnapshot(
       const gfx::Rect& snapshot_bounds,
       std::vector<unsigned char>* png_representation) OVERRIDE;
   virtual void PostNativeEvent(const base::NativeEvent& event) OVERRIDE;
   virtual void OnDeviceScaleFactorChanged(float device_scale_factor) OVERRIDE;
   virtual void PrepareForShutdown() OVERRIDE;
 
+ private:
+  bool DispatchEventForRootWindow(const base::NativeEvent& event);
+
+  // Dispatches XI2 events. Note that some events targetted for the X root
+  // window are dispatched to the aura root window (e.g. touch events after
+  // calibration).
+  void DispatchXI2Event(const base::NativeEvent& event);
+
   // Returns true if there's an X window manager present... in most cases.  Some
   // window managers (notably, ion3) don't implement enough of ICCCM for us to
   // detect that they're there.
   bool IsWindowManagerPresent();
 
   // Sets the cursor on |xwindow_| to |cursor|.  Does not check or update
   // |current_cursor_|.
   void SetCursorInternal(gfx::NativeCursor cursor);
 
   // Translates the native mouse location into screen coordinates and and
   // dispatches the event to RootWindowHostDelegate.
   void TranslateAndDispatchMouseEvent(ui::MouseEvent* event);
 
+  // Copies and returns |snapshot_bounds| from |xwindow_|.  Helper method for
+  // CopyAreaToSkCanvas() and GrabSnapshot().
+  scoped_ptr<ui::XScopedImage> GetXImage(const gfx::Rect& snapshot_bounds);
+
   RootWindowHostDelegate* delegate_;
 
   // The display and the native X window hosting the root window.
   Display* xdisplay_;
   ::Window xwindow_;
 
   // The native root window.
   ::Window x_root_window_;
 
   // Current Aura cursor.
@@ skipping 16 matching lines @@
   scoped_ptr<internal::TouchEventCalibrate> touch_calibrate_;
 
   ui::X11AtomCache atom_cache_;
 
   DISALLOW_COPY_AND_ASSIGN(RootWindowHostLinux);
 };
 
 }  // namespace aura
 
 #endif  // UI_AURA_ROOT_WINDOW_HOST_LINUX_H_