private void TryCreateBackgroundBitmap()
{
if (RenderTarget != null && (imageHash != lastImageHash) && ((isDirty && BackgroundImage != null) || (background == null && BackgroundImage != null)))
{
using (var ms = new System.IO.MemoryStream()) {
ConvertImageToStreamAndAdjustBrightness(BackgroundImage, Data.BackgroundAlpha, ms);
ms.Position = 0;
using (var factory = WIC.ImagingFactory.Create()) {
using (WIC.BitmapDecoder decoder = factory.CreateDecoderFromStream(ms, WIC.DecodeMetadataCacheOption.OnDemand)) {
using (WIC.BitmapFrameDecode source = decoder.GetFrame(0)) {
using (WIC.FormatConverter converter = factory.CreateFormatConverter()) {
converter.Initialize(source.ToBitmapSource(), WIC.PixelFormats.Pbgra32Bpp, WIC.BitmapDitherType.None, WIC.BitmapPaletteType.MedianCut);
background = RenderTarget.CreateBitmapFromWicBitmap(converter.ToBitmapSource());
isDirty = false;
lastImageHash = imageHash;
}
}
}
}
}
}
}
private void TryCreateBackgroundBitmap()
{
if (RenderTarget != null && (imageHash != lastImageHash) && ((isDirty && BackgroundImage != null) || (background == null && BackgroundImage != null))) {
using (var ms = new System.IO.MemoryStream()) {
ConvertImageToStreamAndAdjustBrightness(BackgroundImage, Data.BackgroundAlpha, ms);
ms.Position = 0;
using (var factory = WIC.ImagingFactory.Create()) {
using (WIC.BitmapDecoder decoder = factory.CreateDecoderFromStream(ms, WIC.DecodeMetadataCacheOption.OnDemand)) {
using (WIC.BitmapFrameDecode source = decoder.GetFrame(0)) {
using (WIC.FormatConverter converter = factory.CreateFormatConverter()) {
converter.Initialize(source.ToBitmapSource(), WIC.PixelFormats.Pbgra32Bpp, WIC.BitmapDitherType.None, WIC.BitmapPaletteType.MedianCut);
background = RenderTarget.CreateBitmapFromWicBitmap(converter.ToBitmapSource());
isDirty = false;
lastImageHash = imageHash;
}
}
}
}
}
}
}