flutter::VsyncWaiterIOS Class Reference

#import <vsync_waiter_ios.h>

Inheritance diagram for flutter::VsyncWaiterIOS:

Instance Methods
()	- VsyncWaiterIOS
()	- ~VsyncWaiterIOS
(double)	- GetRefreshRate
(fml::scoped_nsobject< VSyncClient >)	- GetVsyncClient
(void)	- AwaitVSync

Detailed Description

Definition at line 67 of file vsync_waiter_ios.h.

Constructor & Destructor Documentation

VsyncWaiterIOS

- VsyncWaiterIOS:

(const flutter::TaskRunners &)

task_runners

Definition at line 23 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_ =
      fml::scoped_nsobject{[[VSyncClient alloc] initWithTaskRunner:task_runners_.GetUITaskRunner()
                                                          callback:callback]};
  max_refresh_rate_ = [DisplayLinkManager displayRefreshRate];
}

~VsyncWaiterIOS

- VsyncWaiterIOS:

Definition at line 36 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_.get() invalidate];
}

Method Documentation

AwaitVSync

- (void) VsyncWaiterIOS:

Definition at line 42 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_.get() setMaxRefreshRate:max_refresh_rate_];
  }
  [client_.get() await];
}

References kRefreshRateDiffToIgnore.

GetRefreshRate

- (double) VsyncWaiterIOS:

const

Definition at line 52 of file vsync_waiter_ios.mm.

                                            {
  return [client_.get() getRefreshRate];
}

GetVsyncClient

- (scoped_nsobject< VSyncClient >) flutter:

const

Definition at line 56 of file vsync_waiter_ios.mm.

                                                                     {
  return client_;
}

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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