在 Visual Studio 中使用 SkiaSharp

Using SkiaSharp in Visual Studio

我正在研究 SkiaSharp 在未来项目中的使用,遵循 GitHub 上当前可用的文档:

https://developer.xamarin.com/guides/cross-platform/drawing/introduction/

我正在 Visual Studio 2013 Windows 7 上开发。我尝试使用 Xamarin Android 应用程序项目类型,但它需要 SkiaSharp 包中的 DllImportAttribute 的商业许可证。

我想知道是否可以 select 一个 C# Visual Studio 项目,该项目将如何显示 SkiaSharp canvas,如果可以,我该怎么做?

评论中的 link 目前已损坏。由于文件夹"samples"以后可能会再次改变路径,有需要的可以从https://github.com/mono/SkiaSharp页面开始探索。

有关使用 SkiaSharp 的更多信息,请访问 API documentation online and in this article about drawing with skia sharp

这里有一些示例,对于需要实用快速入门的人来说如何使用它:

获取 SKCanvas

using (var surface = SKSurface.Create (width: 640, height: 480, SKColorType.N_32, SKAlphaType.Premul)) {
SKCanvas myCanvas = surface.Canvas;

// Your drawing code goes here.
}

绘图文字

// clear the canvas / fill with white
canvas.DrawColor (SKColors.White);

// set up drawing tools
using (var paint = new SKPaint ()) {
  paint.TextSize = 64.0f;
  paint.IsAntialias = true;
  paint.Color = new SKColor (0x42, 0x81, 0xA4);
  paint.IsStroke = false;

  // draw the text
  canvas.DrawText ("Skia", 0.0f, 64.0f, paint);
}

绘制位图

Stream fileStream = File.OpenRead ("MyImage.png");

// clear the canvas / fill with white
canvas.DrawColor (SKColors.White);

// decode the bitmap from the stream
using (var stream = new SKManagedStream(fileStream))
using (var bitmap = SKBitmap.Decode(stream))
using (var paint = new SKPaint()) {
  canvas.DrawBitmap(bitmap, SKRect.Create(Width, Height), paint);
}

使用图像滤镜绘图

Stream fileStream = File.OpenRead ("MyImage.png"); // open a stream to an image file

// clear the canvas / fill with white
canvas.DrawColor (SKColors.White);

// decode the bitmap from the stream
using (var stream = new SKManagedStream(fileStream))
using (var bitmap = SKBitmap.Decode(stream))
using (var paint = new SKPaint()) {
  // create the image filter
  using (var filter = SKImageFilter.CreateBlur(5, 5)) {
    paint.ImageFilter = filter;

    // draw the bitmap through the filter
    canvas.DrawBitmap(bitmap, SKRect.Create(width, height), paint);
  }
}