skiasharp

问题 From release 1.55.0 SkiaSharp has the support for reading SVG files. The package has been release few days ago (10 Nov. 2016) and I couldn't find enough documentation on how to use it. The following packages are required: SkiaSharp 1.55.0 SkiaSharp Views & Layers 1.55.0 SkiaSharp.Svg 1.55.0-beta1 The first question is what's the best way to load an SKSvg in Xamarin.Android? 回答1: Here two possible solutions to start working with SkiaSharp that are working for me: Loading SVG from Asset folder

问题 From release 1.55.0 SkiaSharp has the support for reading SVG files. The package has been release few days ago (10 Nov. 2016) and I couldn't find enough documentation on how to use it. The following packages are required: SkiaSharp 1.55.0 SkiaSharp Views & Layers 1.55.0 SkiaSharp.Svg 1.55.0-beta1 The first question is what's the best way to load an SKSvg in Xamarin.Android? 回答1: Here two possible solutions to start working with SkiaSharp that are working for me: Loading SVG from Asset folder

问题 From release 1.55.0 SkiaSharp has the support for reading SVG files. The package has been release few days ago (10 Nov. 2016) and I couldn't find enough documentation on how to use it. The following packages are required: SkiaSharp 1.55.0 SkiaSharp Views & Layers 1.55.0 SkiaSharp.Svg 1.55.0-beta1 The first question is what's the best way to load an SKSvg in Xamarin.Android? 回答1: Here two possible solutions to start working with SkiaSharp that are working for me: Loading SVG from Asset folder

问题 How to draw rotated text in SkiaSharp . Currently I'm rotating the SKCanvas , drawing the text and then rotating it back. But I thought may be there is a more efficient way to do this. canvas.RotateDegrees(45, 20, 20); canvas.DrawText("Text", 20, 20, paint); canvas.RotateDegrees(-45, 20, 20); 回答1: That is the correct way (the only way, I think). It is not that inefficient as you are not really rotating the canvas, but rather adjusting the drawing matrix (an int[9] array). Under the hood it is

问题 I have a bitmap which I am placing on canvas using SKRect as the size of image is large. I am trying to draw on the bitmap but the touching co-ordinates don't match with the bitmap co-ordinates (i.e.the touch on canvas and the drawn curves are different from each other) or I am touching somewhere and the drawn curve is on different co-ordinates. Here is the code I am trying. Any help on this would be very helpful. Thanks void OnCanvasViewPaintSurface(object sender, SKPaintSurfaceEventArgs

问题 Introduction I am creating my first Xamarin app (that will target UWP first, then Android, finally maybe iOS). Basically, the app should detect multiple fingers and circles will pop over each finger and follow them. My app First I thought that UI and graphics couldn't be coded with Xamarin so I started UWP code : MainPage.xaml.cs using System; using System.Collections.Generic; using System.Diagnostics; using System.IO; using System.Linq; using System.Runtime.InteropServices.WindowsRuntime;

问题 when I update Xamarin forms to 3.2.0 or higher, I am getting the following error: Error Position 68:29. Signature (return type) of EventHandler "TimeToSport.Views.ItemsPage.OnCanvasViewPaintSurfaceAsync" doesn't match the event type TimeToSport E:\Xamarin Projects\TimeToSport_master\TimeToSport\TimeToSport\Views\Main\ItemsPage.xaml 68 The error is coming from this code (xaml): <skia:SKCanvasView x:Name="canvas" PaintSurface="OnCanvasViewPaintSurfaceAsync" Grid.Row="2" /> In the CS file:

问题 I have a Xamarin forms view where based on touch events i can alter the image <StackLayout > <skia:SKCanvasView x:Name="canvasView" PaintSurface="ImageCanvas_PaintSurface" EnableTouchEvents="True" HorizontalOptions="FillAndExpand" VerticalOptions="FillAndExpand" IgnorePixelScaling="True"// not sure if i need this?? Touch="OnTouch" /> <Button Text="Generate Image" Clicked="CreateButton_Clicked"/> </StackLayout> I need to generate a image of exactly 1060 x 550 based on what is drawn on the

问题 I have a problem. I am using SkiaSharp to make a TriangleGrid. Now I am doing drawing the Grid, but now I want to touch a triangle in the grid to color it. To do that I need to add a TouchEvent to the SKCanvasView, but I dont know how to do that. On the internet I can find the next example: https://docs.microsoft.com/en-us/xamarin/xamarin-forms/user-interface/graphics/skiasharp/paths/finger-paint https://github.com/mattleibow/SkiaSharpDemo/blob/master/SkiaSharpDemo/SkiaSharpDemo/MainPage.xaml

问题 I am working in native xamarin andorid. I am facing issue to set custom font. I am using "SkiaSharp" plugin to generate canvas view. That plugin is inside PCL so that can be use in both android and ios. I have one .ttf file in my "Assets" folder. I generate font path using following code. string path = System.Environment.GetFolderPath(System.Environment.SpecialFolder.Personal); string FontPath = System.IO.Path.Combine(path, "Myfile.ttf"); this Path I send to PCL to set "SKTypeface" paint