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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef UI_COMPOSITOR_TEST_DRAW_WAITER_FOR_TEST_H_
#define UI_COMPOSITOR_TEST_DRAW_WAITER_FOR_TEST_H_
#include <memory>
#include "base/run_loop.h"
#include "ui/compositor/compositor_observer.h"
namespace ui {
class Compositor;
// This is only to be used for test. It allows execution of other tasks on
// the current message loop before the current task finishs (there is a
// potential for re-entrancy).
class DrawWaiterForTest : public CompositorObserver {
public:
DrawWaiterForTest(const DrawWaiterForTest&) = delete;
DrawWaiterForTest& operator=(const DrawWaiterForTest&) = delete;
// Waits for a draw to be issued by the compositor. If the test times out
// here, there may be a logic error in the compositor code causing it
// not to draw.
static void WaitForCompositingStarted(Compositor* compositor);
// Waits for a swap to be completed from the compositor.
static void WaitForCompositingEnded(Compositor* compositor);
// Waits for a commit instead of a draw.
static void WaitForCommit(Compositor* compositor);
private:
enum WaitEvent {
WAIT_FOR_COMMIT,
WAIT_FOR_COMPOSITING_STARTED,
WAIT_FOR_COMPOSITING_ENDED,
};
DrawWaiterForTest(WaitEvent wait_event);
~DrawWaiterForTest() override;
void WaitImpl(Compositor* compositor);
// CompositorObserver implementation.
void OnCompositingDidCommit(Compositor* compositor) override;
void OnCompositingStarted(Compositor* compositor,
base::TimeTicks start_time) override;
void OnCompositingAckDeprecated(Compositor* compositor) override;
std::unique_ptr<base::RunLoop> wait_run_loop_;
WaitEvent wait_event_;
};
} // namespace ui
#endif // UI_COMPOSITOR_TEST_DRAW_WAITER_FOR_TEST_H_
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