public void LoadImage(PipelineElement reader, float opacity = 1, FileFormat fileFormat = FileFormat.Tiff, bool actualSize = false, bool preserveAspectRatio = false)
{
string storageId;
using (var stream = new MemoryStream())
using (var writer = ImageWriter.Create(fileFormat, stream))
{
if (writer is TiffWriter)
{
(writer as TiffWriter).Compression = CompressionType.Zip;
}
var pipeline = new Pipeline(reader);
if (!Utils.EqualsOfFloatNumbers(opacity, 1f))
{
var scaleAlpha = new ScaleAlpha(opacity);
pipeline.Add(scaleAlpha);
}
pipeline.Add(writer);
pipeline.Run();
pipeline.Remove(reader);
pipeline.DisposeAllElements();
stream.Position = 0;
storageId = Configuration.FileCache.AddFile(Common.GetImageExtension(fileFormat), stream, true);
}
LoadImage(storageId, actualSize, preserveAspectRatio);
}
public void ExtendPipeline(Pipeline pipeline, IImageParams destImageParams, ColorManagement colorManagement, float scale, out IEnumerable <IDisposable> deps)
{
deps = new List <IDisposable>();
pipeline.Add(GetShapeDrawer(destImageParams, colorManagement, scale));
var scaleAlpha = new ScaleAlpha(Opacity);
var combiner = GetImageCombiner(destImageParams, colorManagement, scale, deps, scaleAlpha);
if (combiner != null)
{
pipeline.Add(combiner);
}
}
internal Combiner GetImageCombiner(IImageParams destImageParams, ColorManagement colorManagement, float scale, IEnumerable <IDisposable> deps, ScaleAlpha alpha)
{
if (!Configuration.FileCache.FileExists(SourceFileId))
{
return(null);
}
var imageStream = Configuration.FileCache.GetReadStream(SourceFileId, true);
((IList)deps).Add(imageStream);
var reader = ImageReader.Create(imageStream);
((IList)deps).Add(reader);
IImageParams firstElement;
var psdReader = reader as PsdReader;
if (psdReader != null)
{
firstElement = psdReader.MergedImageFrame;
}
else
{
firstElement = reader;
}
var pipeline = new Pipeline((PipelineElement)firstElement);
var dpi = destImageParams.DpiX * scale;
var imageRect = GetImageRectangle(dpi);
if (firstElement.Width != imageRect.Width || firstElement.Height != imageRect.Height)
{
pipeline.Add(new Resize(imageRect.Width, imageRect.Height, _resizeInterpolationMode));
}
if (alpha != null)
{
pipeline.Add(alpha);
}
// Convert color of image
var colorConverter = ColorManagement.GetColorConverter(colorManagement, firstElement, destImageParams);
if (colorConverter != null)
{
pipeline.Add(colorConverter);
}
if (!Angle.Equals(0))
{
// Don't rotate bitmap without alpha channel.
if (!firstElement.PixelFormat.HasAlpha)
{
// Add alpha channel if scaleAlpha or color conversion does not add it
if (alpha == null && (colorConverter == null || !colorConverter.DestinationPixelFormat.HasAlpha))
{
pipeline.Add(new SetAlpha(1));
}
}
var rotate = new MatrixTransform
{
Matrix = Matrix.CreateRotate((float)Angle),
InterpolationMode = InterpolationMode.High,
BackgroundColor = ColorManagement.GetTransparentColor(destImageParams.PixelFormat)
};
pipeline.Add(rotate);
}
var imageLocation = GetDrawingRectangle(dpi).Bounds.Location;
var imageCombiner = new Combiner(CombineMode.AlphaOverlay, pipeline, true)
{
X = (int)imageLocation.X,
Y = (int)imageLocation.Y
};
return(imageCombiner);
}
