flutter::VsyncWaiterIOS Class Reference

#import <vsync_waiter_ios.h>

Inheritance diagram for flutter::VsyncWaiterIOS:

Instance Methods
()	- VsyncWaiterIOS
()	- ~VsyncWaiterIOS
(double)	- GetRefreshRate
(void)	- AwaitVSync
Instance Methods inherited from flutter::VsyncWaiter
virtual	~VsyncWaiter ()
void	AsyncWaitForVsync (const Callback &callback)
void	ScheduleSecondaryCallback (uintptr_t id, const fml::closure &callback)
Instance Methods inherited from flutter::VariableRefreshRateReporter
	VariableRefreshRateReporter ()=default
virtual double	GetRefreshRate () const =0
	FML_DISALLOW_COPY_AND_ASSIGN (VariableRefreshRateReporter)

Additional Inherited Members
Public Types inherited from flutter::VsyncWaiter
using	Callback = std::function< void(std::unique_ptr< FrameTimingsRecorder >)>
Protected Member Functions inherited from flutter::VsyncWaiter
	VsyncWaiter (const TaskRunners &task_runners)
virtual void	AwaitVSync ()=0
virtual void	AwaitVSyncForSecondaryCallback ()
void	FireCallback (fml::TimePoint frame_start_time, fml::TimePoint frame_target_time, bool pause_secondary_tasks=true)
Protected Attributes inherited from flutter::VsyncWaiter
const TaskRunners	task_runners_

Detailed Description

Definition at line 66 of file vsync_waiter_ios.h.

Constructor & Destructor Documentation

VsyncWaiterIOS

- VsyncWaiterIOS:

(const flutter::TaskRunners &)

task_runners

Definition at line 30 of file vsync_waiter_ios.mm.

    : VsyncWaiter(task_runners) {
  auto callback = [this](std::unique_ptr<flutter::FrameTimingsRecorder> recorder) {
    const fml::TimePoint start_time = recorder->GetVsyncStartTime();
    const fml::TimePoint target_time = recorder->GetVsyncTargetTime();
    FireCallback(start_time, target_time, true);
  };
  client_ = [[VSyncClient alloc] initWithTaskRunner:task_runners_.GetUITaskRunner()
                                           callback:callback];
  max_refresh_rate_ = DisplayLinkManager.displayRefreshRate;
}

~VsyncWaiterIOS

- VsyncWaiterIOS:

Definition at line 42 of file vsync_waiter_ios.mm.

                                {
  // This way, we will get no more callbacks from the display link that holds a weak (non-nilling)
  // reference to this C++ object.
  [client_ invalidate];
}

Method Documentation

AwaitVSync

- (void) VsyncWaiterIOS:

Implements flutter::VsyncWaiter.

Definition at line 48 of file vsync_waiter_ios.mm.

                                {
  double new_max_refresh_rate = DisplayLinkManager.displayRefreshRate;
  if (fabs(new_max_refresh_rate - max_refresh_rate_) > kRefreshRateDiffToIgnore) {
    max_refresh_rate_ = new_max_refresh_rate;
    [client_ setMaxRefreshRate:max_refresh_rate_];
  }
  [client_ await];
}

GetRefreshRate

- (double) VsyncWaiterIOS:

const

Implements flutter::VariableRefreshRateReporter.

Definition at line 58 of file vsync_waiter_ios.mm.

                                            {
  return client_.refreshRate;
}

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The documentation for this class was generated from the following files:

• shell/platform/darwin/ios/framework/Source/vsync_waiter_ios.h
• shell/platform/darwin/ios/framework/Source/vsync_waiter_ios.mm