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      1 // Copyright 2014 The Chromium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #ifndef CONTENT_BROWSER_RENDERER_HOST_COMPOSITOR_RESIZE_LOCK_AURA_H_
      6 #define CONTENT_BROWSER_RENDERER_HOST_COMPOSITOR_RESIZE_LOCK_AURA_H_
      7 
      8 #include "base/memory/ref_counted.h"
      9 #include "base/memory/weak_ptr.h"
     10 #include "base/time/time.h"
     11 #include "content/browser/compositor/resize_lock.h"
     12 
     13 namespace aura {
     14 class WindowTreeHost;
     15 }
     16 namespace ui {
     17 class CompositorLock;
     18 }
     19 
     20 namespace content {
     21 
     22 // Used to prevent further resizes while a resize is pending.
     23 class CompositorResizeLock : public ResizeLock {
     24  public:
     25   CompositorResizeLock(aura::WindowTreeHost* host,
     26                        const gfx::Size new_size,
     27                        bool defer_compositor_lock,
     28                        const base::TimeDelta& timeout);
     29   virtual ~CompositorResizeLock();
     30 
     31   virtual bool GrabDeferredLock() OVERRIDE;
     32   virtual void UnlockCompositor() OVERRIDE;
     33 
     34  protected:
     35   virtual void LockCompositor() OVERRIDE;
     36   void CancelLock();
     37 
     38  private:
     39   aura::WindowTreeHost* host_;
     40   scoped_refptr<ui::CompositorLock> compositor_lock_;
     41   base::WeakPtrFactory<CompositorResizeLock> weak_ptr_factory_;
     42   bool cancelled_;
     43 
     44   DISALLOW_COPY_AND_ASSIGN(CompositorResizeLock);
     45 };
     46 
     47 }  // namespace content
     48 
     49 #endif  // CONTENT_BROWSER_RENDERER_HOST_COMPOSITOR_RESIZE_LOCK_AURA_H_
     50