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Update ImageLoader.WinUI.cs

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This commit is contained in:
ClemensFischer 2023-08-19 22:07:27 +02:00
parent adc34b6591
commit 359e253d00
1 changed files with 16 additions and 2 deletions
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18
MapControl/WinUI/ImageLoader.WinUI.cs
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@ -21,14 +21,23 @@ namespace MapControl
{
public static partial class ImageLoader
{
public static async Task<WriteableBitmap> LoadImageAsync(BitmapDecoder decoder)
public static async Task<ImageSource> LoadImageAsync(BitmapDecoder decoder)
{
#if USE_SOFTWAREBITMAP
var image = new SoftwareBitmapSource();
var bitmap = await decoder.GetSoftwareBitmapAsync(
BitmapPixelFormat.Bgra8, BitmapAlphaMode.Premultiplied, new BitmapTransform(),
ExifOrientationMode.IgnoreExifOrientation, ColorManagementMode.DoNotColorManage);
await image.SetBitmapAsync(bitmap);
#else
var image = new WriteableBitmap((int)decoder.PixelWidth, (int)decoder.PixelHeight);
var pixelData = await decoder.GetPixelDataAsync(
BitmapPixelFormat.Bgra8, BitmapAlphaMode.Premultiplied, new BitmapTransform(),
ExifOrientationMode.IgnoreExifOrientation, ColorManagementMode.DoNotColorManage);
pixelData.DetachPixelData().CopyTo(image.PixelBuffer);
#endif
return image;
}
@ -37,8 +46,13 @@ namespace MapControl
// WinUI BitmapImage produces visual artifacts with Bing Maps Aerial (or all JPEG?)
// images in a tile raster, where thin white lines may appear as gaps between tiles.
// Alternatives are SoftwareBitmapSource or WriteableBitmap.
#if USE_BITMAPIMAGE
var image = new BitmapImage();
await image.SetSourceAsync(stream);
return image;
#else
return await LoadImageAsync(await BitmapDecoder.CreateAsync(stream));
#endif
}
public static Task<ImageSource> LoadImageAsync(Stream stream)