public void Draw(ApplicationContext actx, SWM.DrawingContext dc, double scaleFactor, double x, double y, ImageDescription idesc)
{
if (drawCallback != null) {
DrawingContext c = new DrawingContext (dc, scaleFactor);
actx.InvokeUserCode (delegate {
drawCallback (c, new Rectangle (x, y, idesc.Size.Width, idesc.Size.Height));
});
}
else {
if (idesc.Alpha < 1)
dc.PushOpacity (idesc.Alpha);
var f = GetBestFrame (actx, scaleFactor, idesc.Size.Width, idesc.Size.Height, false);
dc.DrawImage (f, new Rect (x, y, idesc.Size.Width, idesc.Size.Height));
if (idesc.Alpha < 1)
dc.Pop ();
}
}
public void Draw(ApplicationContext actx, SWM.DrawingContext dc, double scaleFactor, double x, double y, ImageDescription idesc)
{
if (drawCallback != null) {
DrawingContext c = new DrawingContext (dc, scaleFactor);
actx.InvokeUserCode (delegate {
drawCallback (c, new Rectangle (x, y, idesc.Size.Width, idesc.Size.Height), idesc, actx.Toolkit);
});
}
else {
if (idesc.Alpha < 1)
dc.PushOpacity (idesc.Alpha);
var f = GetBestFrame (actx, scaleFactor, idesc.Size.Width, idesc.Size.Height, false);
var bmpImage = f as BitmapSource;
// When an image is a single bitmap that doesn't have the same intrinsic size as the drawing size, dc.DrawImage makes a very poor job of down/up scaling it.
// Thus we handle this manually by using a TransformedBitmap to handle the conversion in a better way when it's needed.
var scaledWidth = idesc.Size.Width * scaleFactor;
var scaledHeight = idesc.Size.Height * scaleFactor;
if (bmpImage != null && (Math.Abs (bmpImage.PixelHeight - scaledHeight) > 0.001 || Math.Abs (bmpImage.PixelWidth - scaledWidth) > 0.001))
f = new TransformedBitmap (bmpImage, new ScaleTransform (scaledWidth / bmpImage.PixelWidth, scaledHeight / bmpImage.PixelHeight));
dc.DrawImage (f, new Rect (x, y, idesc.Size.Width, idesc.Size.Height));
if (idesc.Alpha < 1)
dc.Pop ();
}
}
public void Draw (ApplicationContext actx, SWM.DrawingContext dc, double scaleFactor, double x, double y, ImageDescription idesc)
{
if (drawCallback != null) {
DrawingContext c = new DrawingContext (dc, scaleFactor);
actx.InvokeUserCode (delegate {
drawCallback (c, new Rectangle (x, y, idesc.Size.Width, idesc.Size.Height));
});
}
else {
if (idesc.Alpha < 1)
dc.PushOpacity (idesc.Alpha);
var f = GetBestFrame (actx, scaleFactor, idesc.Size.Width, idesc.Size.Height, false);
var bmpImage = f as BitmapSource;
if (bmpImage != null && (bmpImage.PixelHeight != idesc.Size.Height || bmpImage.PixelWidth != idesc.Size.Width))
f = new TransformedBitmap (bmpImage, new ScaleTransform (idesc.Size.Width / bmpImage.PixelWidth, idesc.Size.Height / bmpImage.PixelHeight));
dc.DrawImage (f, new Rect (x, y, idesc.Size.Width, idesc.Size.Height));
if (idesc.Alpha < 1)
dc.Pop ();
}
}
