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Revert to using MemoryStream in WinUI ImageLoader

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This commit is contained in:
ClemensFischer 2023-08-20 14:00:30 +02:00
parent 359e253d00
commit 7b404446d2
3 changed files with 17 additions and 29 deletions
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29
MapControl/WinUI/ImageLoader.WinUI.cs
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@ -21,32 +21,35 @@ namespace MapControl
{
public static partial class ImageLoader
{
public static async Task<ImageSource> LoadImageAsync(BitmapDecoder decoder)
#if false
public static async Task<SoftwareBitmapSource> 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);
return image;
}
#else
public static async Task<WriteableBitmap> LoadImageAsync(BitmapDecoder decoder)
{
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;
}
#endif
public static async Task<ImageSource> LoadImageAsync(IRandomAccessStream stream)
{
// 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
#if false
var image = new BitmapImage();
await image.SetSourceAsync(stream);
return image;
@ -60,22 +63,6 @@ namespace MapControl
return LoadImageAsync(stream.AsRandomAccessStream());
}
public static async Task<ImageSource> LoadImageAsync(IBuffer buffer)
{
using (var stream = new InMemoryRandomAccessStream())
{
await stream.WriteAsync(buffer);
stream.Seek(0);
return await LoadImageAsync(stream);
}
}
public static Task<ImageSource> LoadImageAsync(byte[] buffer)
{
return LoadImageAsync(buffer.AsBuffer());
}
public static async Task<ImageSource> LoadImageAsync(string path)
{
ImageSource image = null;