/// <summary>
/// See base docs.
/// </summary>
/// <param name="image"></param>
/// <param name="x"></param>
/// <param name="y"></param>
public override void DrawImage(VrsDrawing.IImage image, int x, int y)
{
if (image is ImageWrapper imageWrapper)
{
GdiPlusLock.EnforceSingleThread(() => {
NativeDrawingContext.DrawImage(
imageWrapper.NativeImage,
x, y
);
});
}
}
/// <summary>
/// See interface docs.
/// </summary>
/// <param name="source"></param>
/// <param name="drawAction"></param>
/// <returns></returns>
public VrsDrawing.IImage CloneAndDraw(VrsDrawing.IImage source, Action <VrsDrawing.IDrawing> drawAction)
{
VrsDrawing.IImage result = null;
if (source is ImageWrapper sourceWrapper)
{
GdiPlusLock.EnforceSingleThread(() => {
result = sourceWrapper.Clone();
var nativeClone = ((ImageWrapper)result).NativeImage;
using (var drawing = new Drawing(Graphics.FromImage(nativeClone))) {
drawAction(drawing);
}
});
}
return(result);
}
/// <summary>
/// See base docs.
/// </summary>
/// <returns></returns>
public override VrsDrawing.IImage Clone()
{
VrsDrawing.IImage result = null;
GdiPlusLock.EnforceSingleThread(() => {
// GDI+ version of clone is a bit dodgy. We need to create a brand-new
// copy of the image instead.
if (NativeImage is Bitmap bitmap)
{
result = new ImageWrapper(new Bitmap(bitmap));
}
else
{
throw new InvalidOperationException($"Cannot clone {NativeImage.GetType().FullName} image objects");
}
});
return(result);
}
/// <summary> /// See interface docs. /// </summary> /// <param name="image"></param> /// <param name="x"></param> /// <param name="y"></param> public abstract void DrawImage(VrsDrawing.IImage image, int x, int y);