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[WIP] apng provider

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Paddy Xu
2018-08-28 00:16:25 +03:00
parent ee6bca704d
commit 3bcb48a43c
11 changed files with 163 additions and 103 deletions
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49
QuickLook.Plugin/QuickLook.Plugin.ImageViewer/AnimatedImage/GifAnimationProvider.cs
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@@ -18,6 +18,7 @@
using System;
using System.Drawing;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Media.Animation;
using System.Windows.Media.Imaging;
using System.Windows.Threading;
@@ -27,50 +28,58 @@ namespace QuickLook.Plugin.ImageViewer.AnimatedImage
{
internal class GifAnimationProvider : AnimationProvider
{
private Bitmap _frame;
private BitmapSource _frameSource;
private Bitmap _fileHandle;
private BitmapSource _frame;
private bool _isPlaying;
public GifAnimationProvider(string path, NConvert meta, Dispatcher uiDispatcher) : base(path, meta,
uiDispatcher)
public GifAnimationProvider(string path) : base(path)
{
_frame = (Bitmap) Image.FromFile(path);
_frameSource = _frame.ToBitmapSource();
Animator = new Int32AnimationUsingKeyFrames {RepeatBehavior = RepeatBehavior.Forever};
_fileHandle = (Bitmap)Image.FromFile(path);
Animator = new Int32AnimationUsingKeyFrames { RepeatBehavior = RepeatBehavior.Forever };
Animator.KeyFrames.Add(new DiscreteInt32KeyFrame(0, KeyTime.FromTimeSpan(TimeSpan.FromMilliseconds(0))));
Animator.KeyFrames.Add(new DiscreteInt32KeyFrame(1, KeyTime.FromTimeSpan(TimeSpan.FromMilliseconds(50))));
Animator.KeyFrames.Add(new DiscreteInt32KeyFrame(2, KeyTime.FromTimeSpan(TimeSpan.FromMilliseconds(100))));
Animator.KeyFrames.Add(new DiscreteInt32KeyFrame(1, KeyTime.FromTimeSpan(TimeSpan.FromMilliseconds(10))));
Animator.KeyFrames.Add(new DiscreteInt32KeyFrame(2, KeyTime.FromTimeSpan(TimeSpan.FromMilliseconds(20))));
}
public override void Dispose()
{
if (_frame == null)
if (_fileHandle == null)
return;
ImageAnimator.StopAnimate(_frame, OnFrameChanged);
_frame.Dispose();
ImageAnimator.StopAnimate(_fileHandle, OnFrameChanged);
_fileHandle.Dispose();
_fileHandle = null;
_frame = null;
_frameSource = null;
}
public override Task<BitmapSource> GetThumbnail(System.Windows.Size size, System.Windows.Size fullSize)
{
return new Task<BitmapSource>(() =>
{
return _fileHandle.ToBitmapSource();
});
}
public override Task<BitmapSource> GetRenderedFrame(int index)
{
if (!_isPlaying)
return new Task<BitmapSource>(() =>
{
_isPlaying = true;
ImageAnimator.Animate(_frame, OnFrameChanged);
}
if (!_isPlaying)
{
_isPlaying = true;
ImageAnimator.Animate(_fileHandle, OnFrameChanged);
}
return new Task<BitmapSource>(() => _frameSource);
return _frame;
});
}
private void OnFrameChanged(object sender, EventArgs e)
{
ImageAnimator.UpdateFrames();
_frameSource = _frame.ToBitmapSource();
_frame = _fileHandle.ToBitmapSource();
}
}
}