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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 UI_SNAPSHOT_SNAPSHOT_ASYNC_H_
      6 #define UI_SNAPSHOT_SNAPSHOT_ASYNC_H_
      7 
      8 #include "cc/output/copy_output_result.h"
      9 #include "ui/snapshot/snapshot.h"
     10 
     11 namespace base {
     12 class TaskRunner;
     13 }
     14 
     15 namespace gfx {
     16 class Size;
     17 }
     18 
     19 namespace ui {
     20 
     21 // Helper methods for async snapshots to convert a cc::CopyOutputResult into a
     22 // ui::GrabWindowSnapshot callback.
     23 class SnapshotAsync {
     24  public:
     25   static void ScaleCopyOutputResult(
     26       const GrabWindowSnapshotAsyncCallback& callback,
     27       const gfx::Size& target_size,
     28       scoped_refptr<base::TaskRunner> background_task_runner,
     29       scoped_ptr<cc::CopyOutputResult> result);
     30 
     31   static void EncodeCopyOutputResult(
     32       const GrabWindowSnapshotAsyncPNGCallback& callback,
     33       scoped_refptr<base::TaskRunner> background_task_runner,
     34       scoped_ptr<cc::CopyOutputResult> result);
     35 
     36  private:
     37   DISALLOW_IMPLICIT_CONSTRUCTORS(SnapshotAsync);
     38 };
     39 
     40 }  // namespace ui
     41 
     42 #endif  // UI_SNAPSHOT_SNAPSHOT_ASYNC_H_
     43