mirror of
https://github.com/flutter/flutter.git
synced 2026-02-20 02:29:02 +08:00
89176ee006
When these delegate methods were initially added, it was expected that a single shell would be able to own mutliple platform views, engines and animators. This plan was abandoned in favor of creating multiple shells with their own platform views, engines, etc.. The arguments were meant to ease the disambiguate the instances of the variaous objects managed by the shell. This is no longer necessary.
87 lines
2.2 KiB
C++
87 lines
2.2 KiB
C++
// Copyright 2015 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 FLUTTER_SHELL_COMMON_ANIMATOR_H_
|
|
#define FLUTTER_SHELL_COMMON_ANIMATOR_H_
|
|
|
|
#include "flutter/common/task_runners.h"
|
|
#include "flutter/fml/memory/ref_ptr.h"
|
|
#include "flutter/fml/memory/weak_ptr.h"
|
|
#include "flutter/fml/time/time_point.h"
|
|
#include "flutter/shell/common/rasterizer.h"
|
|
#include "flutter/shell/common/vsync_waiter.h"
|
|
#include "flutter/synchronization/pipeline.h"
|
|
#include "flutter/synchronization/semaphore.h"
|
|
|
|
namespace shell {
|
|
|
|
class Animator final {
|
|
public:
|
|
class Delegate {
|
|
public:
|
|
virtual void OnAnimatorBeginFrame(fml::TimePoint frame_time) = 0;
|
|
|
|
virtual void OnAnimatorNotifyIdle(int64_t deadline) = 0;
|
|
|
|
virtual void OnAnimatorDraw(
|
|
fml::RefPtr<flutter::Pipeline<flow::LayerTree>> pipeline) = 0;
|
|
|
|
virtual void OnAnimatorDrawLastLayerTree() = 0;
|
|
};
|
|
|
|
Animator(Delegate& delegate,
|
|
blink::TaskRunners task_runners,
|
|
std::unique_ptr<VsyncWaiter> waiter);
|
|
|
|
~Animator();
|
|
|
|
void RequestFrame(bool regenerate_layer_tree = true);
|
|
|
|
void Render(std::unique_ptr<flow::LayerTree> layer_tree);
|
|
|
|
void Start();
|
|
|
|
void Stop();
|
|
|
|
void SetDimensionChangePending();
|
|
|
|
private:
|
|
using LayerTreePipeline = flutter::Pipeline<flow::LayerTree>;
|
|
|
|
void BeginFrame(fml::TimePoint frame_start_time,
|
|
fml::TimePoint frame_target_time);
|
|
|
|
bool CanReuseLastLayerTree();
|
|
void DrawLastLayerTree();
|
|
|
|
void AwaitVSync();
|
|
|
|
const char* FrameParity();
|
|
|
|
Delegate& delegate_;
|
|
blink::TaskRunners task_runners_;
|
|
std::shared_ptr<VsyncWaiter> waiter_;
|
|
|
|
fml::TimePoint last_begin_frame_time_;
|
|
int64_t dart_frame_deadline_;
|
|
fml::RefPtr<LayerTreePipeline> layer_tree_pipeline_;
|
|
flutter::Semaphore pending_frame_semaphore_;
|
|
LayerTreePipeline::ProducerContinuation producer_continuation_;
|
|
int64_t frame_number_;
|
|
bool paused_;
|
|
bool regenerate_layer_tree_;
|
|
bool frame_scheduled_;
|
|
int notify_idle_task_id_;
|
|
bool dimension_change_pending_;
|
|
SkISize last_layer_tree_size_;
|
|
|
|
fml::WeakPtrFactory<Animator> weak_factory_;
|
|
|
|
FML_DISALLOW_COPY_AND_ASSIGN(Animator);
|
|
};
|
|
|
|
} // namespace shell
|
|
|
|
#endif // FLUTTER_SHELL_COMMON_ANIMATOR_H_
|