skiasharp

How to draw rich text with Skia or SkiaSharp

此生再无相见时 提交于 2019-12-08 03:06:12
问题 I want to draw rich text like iOS's Attributed Text or Xamarin.Forms's FormattedString with SkiaSharp , but I can't find how to. I found the DrawText method, but it's for simple text rendering with one color and one font. No mixed colors and/or fonts and no styles like bold, italic, strike-through, or underline. Do I have to do it with my own rich text rendering logic? 回答1: This is doable using the SKPaint type. Basically, as you draw, you set the properties on the paint: var paint = new

Load SVG file in Xamarin with SkiaSharp

流过昼夜 提交于 2019-12-06 07:19:08
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? Here two possible solutions to start working with SkiaSharp that are working for me: Loading SVG from Asset folder (or subfolder): public SKSvg LoadAnSvgFromAssets(Context ctx, string assetSvgFileLoc) { var assets = ctx

How to draw rich text with Skia or SkiaSharp

萝らか妹 提交于 2019-12-06 05:28:15
I want to draw rich text like iOS's Attributed Text or Xamarin.Forms's FormattedString with SkiaSharp , but I can't find how to. I found the DrawText method, but it's for simple text rendering with one color and one font. No mixed colors and/or fonts and no styles like bold, italic, strike-through, or underline. Do I have to do it with my own rich text rendering logic? This is doable using the SKPaint type. Basically, as you draw, you set the properties on the paint: var paint = new SKPaint(); paint.StrikeThruText = true; paint.TextSize = 24; paint.Color = SKColors.Yellow; paint.UnderlineText

Draw rotated text in SkiaSharp

筅森魡賤 提交于 2019-12-05 09:27:40
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); 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 doing something like this: var m = SKMatrix.CreateRotation(45); // simple struct over int[9] canvas

Xamarin.Forms IOS error replacing existing signature

二次信任 提交于 2019-11-28 08:40:21
问题 I think this error started happening after I change the provisioning profile. My app is on visual 2017 Xamarin.Forms project and building through on Windows PC connected to a MAC book. The Android and UWP projects works fine. I have tried: uninstalling / reinstalling skiasharp package uninstalling Xamarin.IOS with the uninstall script and emptying the cache folder on the MAC side Allow full access to the keychains to all applications Here is the error: /Users/myusername/Library/Caches/Xamarin