Void OnCanvasViewPaintSurface(object sender, SKPaintSurfaceEventArgs args)įloat sigmaX = (float)sigmaXSlider.Value įloat sigmaY = (float)sigmaYSlider.Value Void OnSliderValueChanged(object sender, ValueChangedEventArgs args) SKBitmap bitmap = BitmapExtensions.LoadBitmapResource( The code-behind file uses the two Slider values to call SKImageFilter.CreateBlur for the SKPaint object used to display both text and a bitmap: public partial class ImageBlurExperimentPage : ContentPage The Image Blur Experiment page in the SkiaSharpFormsDemos includes two Slider views that let you experiment with setting various levels of blur: A cropping rectangle can also be specified. You can cascade image filters by specifying another image filter as the optional third argument. The method has two sigma values - the first for the blur extent in the horizontal direction and the second for the vertical direction. The method has the following syntax: public static SkiaSharp.SKImageFilter CreateBlur (float sigmaX, float sigmaY, The blur effect created by the SKImageFilter.CreateBlur static method has a significant advantage over the blur methods in the SKMaskFilter class: The image filter can blur an entire bitmap. This article also demonstrates using an image filter to create a drop shadow, and for embossing and engraving effects. You can use a mask filter to blur an entire bitmap: The best way to become familiar with mask filters is by experimenting with these static methods. ![]() To use an image filter, set the ImageFilter property of SKPaint to an object of type SKImageFilter that you've created by calling one of the class's static methods. They are more versatile than mask filters, which only operate on the alpha channel as described in the article SkiaSharp mask filters. Image filters are effects that operate on all the color bits of pixels that make up an image.
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