public ImageBrushImpl(
ITileBrush brush,
SharpDX.Direct2D1.RenderTarget target,
BitmapImpl bitmap,
Size targetSize)
{
var dpi = new Vector(target.DotsPerInch.Width, target.DotsPerInch.Height);
var calc = new TileBrushCalculator(brush, bitmap.PixelSize.ToSizeWithDpi(dpi), targetSize);
if (!calc.NeedsIntermediate)
{
_bitmap = bitmap.GetDirect2DBitmap(target);
PlatformBrush = new BitmapBrush(
target,
_bitmap.Value,
GetBitmapBrushProperties(brush),
GetBrushProperties(brush, calc.DestinationRect));
}
else
{
using (var intermediate = RenderIntermediate(target, bitmap, calc))
{
PlatformBrush = new BitmapBrush(
target,
intermediate.Bitmap,
GetBitmapBrushProperties(brush),
GetBrushProperties(brush, calc.DestinationRect));
}
}
_bitmapInterpolationMode = brush.BitmapInterpolationMode;
}
private static BitmapInterpolationMode ConvertInterpolationMode(Avalonia.Media.Imaging.BitmapInterpolationMode interpolationMode)
{
switch (interpolationMode)
{
case Avalonia.Media.Imaging.BitmapInterpolationMode.Default:
return(BitmapInterpolationMode.Fant);
case Avalonia.Media.Imaging.BitmapInterpolationMode.LowQuality:
return(BitmapInterpolationMode.NearestNeighbor);
case Avalonia.Media.Imaging.BitmapInterpolationMode.MediumQuality:
return(BitmapInterpolationMode.Fant);
default:
case Avalonia.Media.Imaging.BitmapInterpolationMode.HighQuality:
return(BitmapInterpolationMode.HighQualityCubic);
}
}
public WicBitmapImpl(Stream stream, int decodeSize, bool horizontal, Avalonia.Media.Imaging.BitmapInterpolationMode interpolationMode)
{
_decoder = new BitmapDecoder(Direct2D1Platform.ImagingFactory, stream, DecodeOptions.CacheOnLoad);
using var frame = _decoder.GetFrame(0);
// now scale that to the size that we want
var realScale = horizontal ? ((double)frame.Size.Height / frame.Size.Width) : ((double)frame.Size.Width / frame.Size.Height);
PixelSize desired;
if (horizontal)
{
desired = new PixelSize(decodeSize, (int)(realScale * decodeSize));
}
else
{
desired = new PixelSize((int)(realScale * decodeSize), decodeSize);
}
if (frame.Size.Width != desired.Width || frame.Size.Height != desired.Height)
{
using (var scaler = new BitmapScaler(Direct2D1Platform.ImagingFactory))
{
scaler.Initialize(frame, desired.Width, desired.Height, ConvertInterpolationMode(interpolationMode));
WicImpl = new Bitmap(Direct2D1Platform.ImagingFactory, scaler, BitmapCreateCacheOption.CacheOnLoad);
}
}
else
{
WicImpl = new Bitmap(Direct2D1Platform.ImagingFactory, frame, BitmapCreateCacheOption.CacheOnLoad);
}
Dpi = new Vector(96, 96);
}
public WriteableWicBitmapImpl(Stream stream, int decodeSize, bool horizontal,
Avalonia.Media.Imaging.BitmapInterpolationMode interpolationMode)
: base(stream, decodeSize, horizontal, interpolationMode)
{
}
