如何使用 WindowsAPICodePack 实现对文本的轮廓效果？答案

【问题标题】：How to implement the outline effect on text with WindowsAPICodePack?如何使用 WindowsAPICodePack 实现对文本的轮廓效果？
【发布时间】：2023-03-18 08:33:01
【问题描述】：

在我们完成其他要求后，我仍在努力解决这个问题。我发现我们可以使用 GeometrySink 类似的类来实现轮廓效果；但我不熟悉c++；见这篇文章： http://msdn.microsoft.com/en-us/library/dd317121.aspx

可以使用 ID2D1GeometrySink 创建更复杂的形状接口指定一系列由直线、曲线、和弧线。 ID2D1GeometrySink 被传递给 Open 方法 ID2D1PathGeometry 生成复杂的几何图形。 ID2D1SimplifiedGeometrySink 也可以与 DirectWrite API 一起使用提取格式化文本的路径轮廓以进行艺术渲染。

如果您有任何建议或想法，请告诉我。

最好的问候，霍华德

【问题讨论】：

标签： text outline direct2d windows-api-code-pack

【解决方案1】：

我使用SharpDX。这是代码片段（这是正在进行的工作，我刚刚得到它的渲染，但它可能是您正在寻找的东西）。

   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);
        }

    }

【讨论】：

【解决方案2】：

我把它变成了一个通用的 XAML 大纲文本渲染器。感谢发帖。

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

干杯，保罗

【讨论】：