uwp InkCanvas将笔划另存为svg [英] uwp InkCanvas save stokes as svg
问题描述
我正在尝试将InkCanvas和InkStorkes保存为SVG.我找到了一个适用于Wpf的先前的问题,但是我无法使其与uwp一起使用. Wpf InkCanvas将笔划另存为svg .我对其进行了一些更改,但是我遇到了GetGrometry和XamlWriter的问题.
I am trying to save InkCanvas , InkStorkes as a SVG. I found a previous question that works for Wpf,but I have been unable to get it to work with uwp. Wpf InkCanvas save stokes as svg . I made some changes to it, but I am running into issues with GetGrometry and XamlWriter.
var svg = new SvgDocument();
var colorServer = new SvgColourServer(System.Drawing.Color.Black);
var group = new SvgGroup { Fill = colorServer, Stroke = colorServer };
svg.Children.Add(group);
foreach (var stroke in inkCanvas.InkPresenter.StrokeContainer.GetStrokes())
{
var geometry = stroke.GetGeometry(stroke.DrawingAttributes).GetOutlinedPathGeometry();
var s = XamlWriter.Save(geometry);
if (s.IsNotNullOrEmpty())
{
var element = XElement.Parse(s);
var data = element.Attribute("Figures")?.Value;
if (data.IsNotNullOrEmpty())
{
group.Children.Add(new SvgPath
{
PathData = SvgPathBuilder.Parse(data),
Fill = colorServer,
Stroke = colorServer
});
}
}
}
推荐答案
我从Xavier Xie-MSFT的注释中实现了一种方法.
I implemented an approach from the comments Xavier Xie - MSFT.
主要思想是使用自己的ICanvasPathReceiver接口实现-这是CanvasGeometryToSvgPathReader类:
The main idea was to use own implementation of ICanvasPathReceiver interface - here is CanvasGeometryToSvgPathReader class:
var svgDocument = new CanvasSvgDocument(canvasDevice);
foreach (var stroke in InkCanvas.InkPresenter.StrokeContainer.GetStrokes())
{
var canvasGeometry = CanvasGeometry.CreateInk(drawingSession, new[] {stroke});
var pathReceiver = new CanvasGeometryToSvgPathReader();
canvasGeometry.SendPathTo(pathReceiver);
var element = svgDocument.Root.CreateAndAppendNamedChildElement("path");
element.SetStringAttribute("d", pathReceiver.Path);
element.SetColorAttribute("fill", stroke.DrawingAttributes.Color);
}
结果是,圆珠笔呈现的很好,荧光笔的表现更差,铅笔没有呈现.
As result ballpoint pen renders fine, highlighter worse and pencil doesn't render.
完整源代码: https://github.com/ycherkes/InkToSvg
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