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better NConvert decoding

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This commit is contained in:
Paddy Xu
2018-09-02 14:09:01 +03:00
parent e4db93704e
commit 187fe2649b
3 changed files with 12 additions and 5 deletions
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8
QuickLook.Plugin/QuickLook.Plugin.ImageViewer/AnimatedImage/NConvertImageProvider.cs
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@@ -36,6 +36,11 @@ namespace QuickLook.Plugin.ImageViewer.AnimatedImage
public override Task<BitmapSource> GetThumbnail(Size size, Size fullSize) public override Task<BitmapSource> GetThumbnail(Size size, Size fullSize)
{ {
var decodeWidth = (int) Math.Round(fullSize.Width *
Math.Min(size.Width / 2 / fullSize.Width,
size.Height / 2 / fullSize.Height));
var decodeHeight = (int) Math.Round(fullSize.Height / fullSize.Width * decodeWidth);
return new Task<BitmapSource>(() => return new Task<BitmapSource>(() =>
{ {
try try
@@ -46,11 +51,14 @@ namespace QuickLook.Plugin.ImageViewer.AnimatedImage
img.BeginInit(); img.BeginInit();
img.StreamSource = ms; img.StreamSource = ms;
img.CacheOption = BitmapCacheOption.OnLoad; img.CacheOption = BitmapCacheOption.OnLoad;
img.DecodePixelWidth = decodeWidth;
img.DecodePixelHeight = decodeHeight; // specific size to avoid .net's double to int conversion
img.EndInit(); img.EndInit();
var scaled = new TransformedBitmap(img, var scaled = new TransformedBitmap(img,
new ScaleTransform(fullSize.Width / img.PixelWidth, fullSize.Height / img.PixelHeight)); new ScaleTransform(fullSize.Width / img.PixelWidth, fullSize.Height / img.PixelHeight));
scaled.Freeze(); scaled.Freeze();
return scaled; return scaled;
} }
} }

7
QuickLook.Plugin/QuickLook.Plugin.ImageViewer/AnimatedImage/NativeImageProvider.cs
View File

@@ -49,13 +49,12 @@ namespace QuickLook.Plugin.ImageViewer.AnimatedImage
img.BeginInit(); img.BeginInit();
img.UriSource = new Uri(Path); img.UriSource = new Uri(Path);
img.CacheOption = BitmapCacheOption.OnLoad; img.CacheOption = BitmapCacheOption.OnLoad;
img.DecodePixelWidth = (int) decodeWidth; img.DecodePixelWidth = decodeWidth;
img.DecodePixelHeight = img.DecodePixelHeight = decodeHeight; // specific size to avoid .net's double to int conversion
(int) decodeHeight; // specific size to avoid .net's double to int conversion
img.EndInit(); img.EndInit();
var scaled = new TransformedBitmap(img, var scaled = new TransformedBitmap(img,
new ScaleTransform(fullSize.Width / decodeWidth, fullSize.Height / decodeHeight)); new ScaleTransform(fullSize.Width / img.PixelWidth, fullSize.Height / img.PixelHeight));
scaled.Freeze(); scaled.Freeze();
return scaled; return scaled;
} }

2
QuickLook.Plugin/QuickLook.Plugin.ImageViewer/Plugin.cs
View File

@@ -88,7 +88,7 @@ namespace QuickLook.Plugin.ImageViewer
context.ViewerContent = _ip; context.ViewerContent = _ip;
context.Title = size.IsEmpty context.Title = size.IsEmpty
? $"{Path.GetFileName(path)}" ? $"{Path.GetFileName(path)}"
: $"{Path.GetFileName(path)} ({size.Width}×{size.Height})"; : $"{size.Width}×{size.Height}: {Path.GetFileName(path)}";
_ip.ImageUriSource = new Uri(path); _ip.ImageUriSource = new Uri(path);
} }