1 | // Copyright 2013 The Flutter 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 FLUTTER_SHELL_COMMON_VSYNC_WAITER_FALLBACK_H_ |
6 | #define FLUTTER_SHELL_COMMON_VSYNC_WAITER_FALLBACK_H_ |
7 | |
8 | #include "flutter/fml/macros.h" |
9 | #include "flutter/fml/memory/weak_ptr.h" |
10 | #include "flutter/fml/time/time_point.h" |
11 | #include "flutter/shell/common/vsync_waiter.h" |
12 | |
13 | namespace flutter { |
14 | |
15 | /// A |VsyncWaiter| that will fire at 60 fps irrespective of the vsync. |
16 | class VsyncWaiterFallback final : public VsyncWaiter { |
17 | public: |
18 | VsyncWaiterFallback(TaskRunners task_runners); |
19 | |
20 | ~VsyncWaiterFallback() override; |
21 | |
22 | private: |
23 | fml::TimePoint phase_; |
24 | |
25 | // |VsyncWaiter| |
26 | void AwaitVSync() override; |
27 | |
28 | FML_DISALLOW_COPY_AND_ASSIGN(VsyncWaiterFallback); |
29 | }; |
30 | |
31 | } // namespace flutter |
32 | |
33 | #endif // FLUTTER_SHELL_COMMON_VSYNC_WAITER_FALLBACK_H_ |
34 |