在Visual Studio中使用SkiaSharp

Question

我正在研究将SkiaSharp用于未来的项目,遵循GitHub上现有的文档:

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

我正在使用Windows 7上的Visual Studio 2013进行开发.我尝试使用Xamarin Android App项目类型,但它需要SkiaSharp软件包中的DllImportAttribute的营业执照.

我想知道是否有可能选择一个C#Visual Studio项目,如何能够显示SkiaSharp画布,如果是这样,我该怎么做？

Answer 1

评论上的链接目前已被删除.由于文件夹"samples"可能会在未来再次改变路径,无论谁需要都可以从https://github.com/mono/SkiaSharp页面开始探索.

有关使用SkiaSharp的更多信息,请参见在线API文档和本文中有关使用skia sharp绘图的文章

对于谁需要一个实用的快速入门,如何在这里使用它一些例子:

获得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);
}

使用图像过滤器绘图

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);
  }
}