File: snapshot_async.h

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// Copyright 2014 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_SNAPSHOT_SNAPSHOT_ASYNC_H_
#define UI_SNAPSHOT_SNAPSHOT_ASYNC_H_

#include "cc/output/copy_output_result.h"
#include "ui/snapshot/snapshot.h"

namespace base {
class TaskRunner;
}

namespace gfx {
class Size;
}

namespace ui {

// Helper methods for async snapshots to convert a cc::CopyOutputResult into a
// ui::GrabWindowSnapshot callback.
class SnapshotAsync {
 public:
  static void ScaleCopyOutputResult(
      const GrabWindowSnapshotAsyncCallback& callback,
      const gfx::Size& target_size,
      scoped_refptr<base::TaskRunner> background_task_runner,
      scoped_ptr<cc::CopyOutputResult> result);

  static void EncodeCopyOutputResult(
      const GrabWindowSnapshotAsyncPNGCallback& callback,
      scoped_refptr<base::TaskRunner> background_task_runner,
      scoped_ptr<cc::CopyOutputResult> result);

 private:
  DISALLOW_IMPLICIT_CONSTRUCTORS(SnapshotAsync);
};

}  // namespace ui

#endif  // UI_SNAPSHOT_SNAPSHOT_ASYNC_H_