public static NSImage Tint(this NSImage image, NSColor tint) { var colorGenerator = new CIConstantColorGenerator { Color = CIColor.FromCGColor(tint.CGColor) }; var colorFilter = new CIColorControls { Image = (CIImage)colorGenerator.ValueForKey(CIFilterOutputKey.Image), Saturation = 3f, Brightness = 0.35f, Contrast = 1f }; var monochromeFilter = new CIColorMonochrome { Image = CIImage.FromCGImage(image.CGImage), Color = CIColor.FromRgb(0.75f, 0.75f, 0.75f), Intensity = 1f }; var compositingFilter = new CIMultiplyCompositing { Image = (CIImage)colorFilter.ValueForKey(CIFilterOutputKey.Image), BackgroundImage = (CIImage)monochromeFilter.ValueForKey(CIFilterOutputKey.Image) }; var outputImage = (CIImage)compositingFilter.ValueForKey(CIFilterOutputKey.Image); var extent = outputImage.Extent; var newsize = Size.Truncate(extent.Size.ToEto()); if (newsize.IsEmpty) return image; var tintedImage = new NSImage(newsize.ToNS()); tintedImage.LockFocus(); try { var graphics = NSGraphicsContext.CurrentContext.GraphicsPort; var ciContext = CIContext.FromContext(graphics, new CIContextOptions { UseSoftwareRenderer = true }); ciContext.DrawImage(outputImage, extent, extent); } finally { tintedImage.UnlockFocus(); } var newrep = tintedImage.Representations()[0]; newrep.Size = image.Size; tintedImage.Size = image.Size; return tintedImage; }
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); }
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)); }