Ejemplo n.º 1
0
		public static void Colourize(NSView control, Color color, Action drawAction)
		{
			var size = control.Frame.Size;
			if (size.Width <= 0 || size.Height <= 0)
				return;
			var image = new NSImage(size);
			
			image.LockFocusFlipped(control.IsFlipped);
			drawAction();
			image.UnlockFocus();
			
			var ciImage = CIImage.FromCGImage(image.CGImage);

			SD.SizeF realSize;
			if (control.RespondsToSelector(selConvertSizeToBacking))
				realSize = control.ConvertSizeToBacking(size);
			else
				realSize = control.ConvertSizeToBase(size);

			if (control.IsFlipped)
			{
				var affineTransform = new NSAffineTransform();
				affineTransform.Translate(0, realSize.Height);
				affineTransform.Scale(1, -1);
				var filter1 = new CIAffineTransform();
				filter1.Image = ciImage;
				filter1.SetValueForKey(affineTransform, CIInputTransform);
				ciImage = filter1.ValueForKey(CIOutputImage) as CIImage;
			}

			var filter2 = new CIColorControls();
			filter2.SetDefaults();
			filter2.Image = ciImage;
			filter2.Saturation = 0.0f;
			ciImage = filter2.ValueForKey(CIOutputImage) as CIImage;
			
			var filter3 = new CIColorMatrix();
			filter3.SetDefaults();
			filter3.Image = ciImage;
			filter3.RVector = new CIVector(0, color.R, 0);
			filter3.GVector = new CIVector(color.G, 0, 0);
			filter3.BVector = new CIVector(0, 0, color.B);
			ciImage = filter3.ValueForKey(CIOutputImage) as CIImage;

			ciImage.Draw(new SD.RectangleF(SD.PointF.Empty, size), new SD.RectangleF(SD.PointF.Empty, realSize), NSCompositingOperation.SourceOver, 1);
		}
Ejemplo n.º 2
0
		public static void Colourize(NSView control, Color color, Action drawAction)
		{
			var size = control.Frame.Size;
			if (size.Width <= 0 || size.Height <= 0)
				return;
			var image = new NSImage(size);
			
			image.LockFocusFlipped(!control.IsFlipped);
			drawAction();
			image.UnlockFocus();

			var ciImage = CIImage.FromCGImage(image.CGImage);

			CGSize realSize;
			if (control.RespondsToSelector(selConvertSizeToBacking))
				realSize = control.ConvertSizeToBacking(size);
			else
				realSize = control.ConvertSizeToBase(size);

			var filter2 = new CIColorControls();
			filter2.SetDefaults();
			filter2.Image = ciImage;
			filter2.Saturation = 0.0f;
			ciImage = (CIImage)filter2.ValueForKey(CIOutputImage);

			var filter3 = new CIColorMatrix();
			filter3.SetDefaults();
			filter3.Image = ciImage;
			filter3.RVector = new CIVector(0, color.R, 0);
			filter3.GVector = new CIVector(color.G, 0, 0);
			filter3.BVector = new CIVector(0, 0, color.B);
			ciImage = (CIImage)filter3.ValueForKey(CIOutputImage);

			// create separate context so we can force using the software renderer, which is more than fast enough for this
			var ciContext = CIContext.FromContext(NSGraphicsContext.CurrentContext.GraphicsPort, new CIContextOptions { UseSoftwareRenderer = true });
			ciContext.DrawImage(ciImage, new CGRect(CGPoint.Empty, size), new CGRect(CGPoint.Empty, realSize));
		}