ui/compositor/test/draw_waiter_for_test.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 UI_COMPOSITOR_TEST_DRAW_WAITER_H_
   6 #define UI_COMPOSITOR_TEST_DRAW_WAITER_H_
   7
   8 #include "base/run_loop.h"
   9 #include "ui/compositor/compositor_observer.h"
  10
  11 class Compositor;
  12
  13 namespace ui {
  14
  15 // This is only to be used for test. It allows execution of other tasks on
  16 // the current message loop before the current task finishs (there is a
  17 // potential for re-entrancy).
  18 class DrawWaiterForTest : public CompositorObserver {
  19  public:
  20   // Waits for a draw to be issued by the compositor. If the test times out
  21   // here, there may be a logic error in the compositor code causing it
  22   // not to draw.
  23   static void Wait(Compositor* compositor);
  24
  25   // Waits for a commit instead of a draw.
  26   static void WaitForCommit(Compositor* compositor);
  27
  28  private:
  29   DrawWaiterForTest();
  30   ~DrawWaiterForTest() override;
  31
  32   void WaitImpl(Compositor* compositor);
  33
  34   // CompositorObserver implementation.
  35   void OnCompositingDidCommit(Compositor* compositor) override;
  36   void OnCompositingStarted(Compositor* compositor,
  37                             base::TimeTicks start_time) override;
  38   void OnCompositingEnded(Compositor* compositor) override;
  39   void OnCompositingAborted(Compositor* compositor) override;
  40   void OnCompositingLockStateChanged(Compositor* compositor) override;
  41
  42   scoped_ptr<base::RunLoop> wait_run_loop_;
  43
  44   bool wait_for_commit_;
  45
  46   DISALLOW_COPY_AND_ASSIGN(DrawWaiterForTest);
  47 };
  48
  49 }  // namespace ui
  50
  51 #endif  // UI_COMPOSITOR_TEST_DRAW_WAITER_H_