如何使用WindowsAPICodePack实现文本的轮廓效果

Question

在我们的其他要求完成后，我仍然在这个问题上挣扎。我发现我们可以使用类似于GeometrySink的类来实现轮廓效果;但我不熟悉c++;请看这篇文章:http://msdn.microsoft.com/en-us/library/dd317121.aspx

使用ID2D1GeometrySink可以创建更复杂的形状接口指定一系列图形由直线、曲线、和弧。ID2D1GeometrySink被传递给对象的Open方法ID2D1PathGeometry生成复杂的几何图形。ID2D1SimplifiedGeometrySink也可以与DirectWrite API一起使用为艺术渲染提取格式化文本的路径轮廓。

如果你有任何建议或想法，请告诉我。

最诚挚的问候,霍华德

Answer 1

我使用SharpDX。这里有一段代码(这是正在进行的工作，我刚刚得到它的渲染，但它可能是你正在寻找的东西)。

   public class OutlineTextRender : SharpDX.DirectWrite.TextRenderer
    {
        readonly Factory _factory;
        readonly RenderTarget _surface;
        readonly Brush _brush;
        public OutlineTextRender(RenderTarget surface, Brush brush)
        {
            _factory = surface.Factory;
            _surface = surface;
            _brush = brush;
        }
        public Result DrawGlyphRun(object clientDrawingContext, float baselineOriginX, float baselineOriginY, MeasuringMode measuringMode, SharpDX.DirectWrite.GlyphRun glyphRun, SharpDX.DirectWrite.GlyphRunDescription glyphRunDescription, ComObject clientDrawingEffect)
        {
            using (PathGeometry path = new PathGeometry(_factory))
            {
                using (GeometrySink sink = path.Open())
                {
                    glyphRun.FontFace.GetGlyphRunOutline(glyphRun.FontSize, glyphRun.Indices, glyphRun.Advances, glyphRun.Offsets, glyphRun.IsSideways, (glyphRun.BidiLevel % 2) > 0, sink);
                    sink.Close();
                }
                Matrix matrix = Matrix.Identity;
                matrix = matrix * Matrix.Translation(baselineOriginX, baselineOriginY, 0);
                TransformedGeometry transformedGeometry = new TransformedGeometry(_factory, path, matrix);
                _surface.DrawGeometry(transformedGeometry, _brush);
            }
            return new Result();
        }
        public Result DrawInlineObject(object clientDrawingContext, float originX, float originY, SharpDX.DirectWrite.InlineObject inlineObject, bool isSideways, bool isRightToLeft, ComObject clientDrawingEffect)
        {
            return new Result();
        }
        public Result DrawStrikethrough(object clientDrawingContext, float baselineOriginX, float baselineOriginY, ref SharpDX.DirectWrite.Strikethrough strikethrough, ComObject clientDrawingEffect)
        {
            return new Result();
        }
        public Result DrawUnderline(object clientDrawingContext, float baselineOriginX, float baselineOriginY, ref SharpDX.DirectWrite.Underline underline, ComObject clientDrawingEffect)
        {
            return new Result();
        }
        public SharpDX.DirectWrite.Matrix GetCurrentTransform(object clientDrawingContext)
        {
            return new SharpDX.DirectWrite.Matrix();
        }
        public float GetPixelsPerDip(object clientDrawingContext)
        {
            return 0;
        }
        public bool IsPixelSnappingDisabled(object clientDrawingContext)
        {
            return true; ;
        }
        public IDisposable Shadow
        {
            get
            {
                return null;
            }
            set
            {
               // throw new NotImplementedException();
            }
        }
        public void Dispose()
        {
        }
    }
    public void strokeText(string text, float x, float y, float maxWidth)
    {
        // http://msdn.microsoft.com/en-us/library/windows/desktop/dd756692(v=vs.85).aspx
        // FIXME make field
        SharpDX.DirectWrite.Factory factory = new SharpDX.DirectWrite.Factory(SharpDX.DirectWrite.FactoryType.Shared);
        TextFormat format = new TextFormat(factory, "Verdana", 50);
        SharpDX.DirectWrite.TextLayout layout = new SharpDX.DirectWrite.TextLayout(factory, text, format, 50, 1000);


        using (var brush = new SolidColorBrush(_surface, CurrentColor))
        {
            var render = new OutlineTextRender(_surface, brush);
            layout.Draw(render, x, y);
            //_surface.DrawTextLayout(new DrawingPointF(x, y), layout, brush);
         //   _surface.DrawGlyphRun(new DrawingPointF(x, y), run, brush, MeasuringMode.Natural);
        }
    }

Answer 2

我把它变成了一个通用的XAML大纲文本渲染器。谢谢你的发帖。

https://blogs.msdn.microsoft.com/theuxblog/2016/07/09/outline-text-from-a-windows-10-store-xaml-app-using-sharpdx/

欢呼,保罗