content/browser/compositor/resize_lock.h

   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_COMPOSITOR_RESIZE_LOCK_H_
   6 #define CONTENT_BROWSER_COMPOSITOR_RESIZE_LOCK_H_
   7
   8 #include "base/basictypes.h"
   9 #include "content/common/content_export.h"
  10 #include "ui/gfx/size.h"
  11
  12 namespace content {
  13
  14 class CONTENT_EXPORT ResizeLock {
  15  public:
  16   virtual ~ResizeLock();
  17
  18   virtual bool GrabDeferredLock();
  19   virtual void UnlockCompositor();
  20
  21   const gfx::Size& expected_size() const { return new_size_; }
  22
  23  protected:
  24   ResizeLock(const gfx::Size new_size, bool defer_compositor_lock);
  25
  26   virtual void LockCompositor();
  27
  28  private:
  29   gfx::Size new_size_;
  30   bool defer_compositor_lock_;
  31
  32   DISALLOW_COPY_AND_ASSIGN(ResizeLock);
  33 };
  34
  35 }  // namespace content
  36
  37 #endif  // CONTENT_BROWSER_COMPOSITOR_RESIZE_LOCK_H_