Virtu/Library/FrameRateCounter.xaml.cs

43 lines
1.1 KiB
C#
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using System;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Media;
namespace Jellyfish.Library
{
public sealed partial class FrameRateCounter : UserControl
{
public FrameRateCounter()
{
InitializeComponent();
CompositionTarget.Rendering += OnCompositionTargetRendering;
}
private void OnCompositionTargetRendering(object sender, EventArgs e)
{
_frameCount++;
long time = DateTime.UtcNow.Ticks;
if (time - _lastTime >= TimeSpan.TicksPerSecond)
{
_lastTime = time;
FrameRate = _frameCount;
_frameCount = 0;
}
}
public static readonly DependencyProperty FrameRateProperty = DependencyProperty.Register("FrameRate", typeof(int), typeof(FrameRateCounter),
new PropertyMetadata(0));
public int FrameRate
{
get { return (int)GetValue(FrameRateProperty); }
set { SetValue(FrameRateProperty, value); }
}
private int _frameCount;
private long _lastTime;
}
}