什么已经在起作用：
我想在我的应用程序中使用 SVG 图标。所以我从 Material.io 下载了一些图标，并使用 Inkscape 将它们转换为 XAML 文件。
然后将这些文件的内容<VisualBrush>用作 a <Rectangle.OpacityMask>。通过这样做，我可以根据需要更改前景和背景颜色。这很重要，因为我希望能够更改图标颜色，而无需重新设计它们。
VisualBrushes 和颜色在实际应用程序中的资源字典中，但为了更好地解释，我在一个窗口中复制了所有内容。
示例代码：
<Grid Background="Green" Margin="4">
<Rectangle Fill="Blue" Width="24" Height="24" >
<Rectangle.OpacityMask>
<VisualBrush Stretch="Uniform">
<VisualBrush.Visual>
<!-- from SVG (baseline-chevron_right-24px)-->
<Viewbox xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" Stretch="Uniform">
<Canvas Width="24" Height="24">
<Canvas.RenderTransform>
<TranslateTransform X="0" Y="0"/>
</Canvas.RenderTransform>
<Canvas.Resources/>
<!--Unknown tag: metadata-->
<!--Unknown tag: sodipodi:namedview-->
<Path xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Fill="#000000" Width="24" Height="24">
<Path.Data>
<PathGeometry Figures="M10 6L8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z" FillRule="NonZero"/>
</Path.Data>
</Path>
<Path xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" >
<Path.Data >
<PathGeometry Figures="M0 0h24v24H0z" FillRule="NonZero" />
</Path.Data>
</Path>
</Canvas>
</Viewbox>
<!-- end from SVG-->
</VisualBrush.Visual>
</VisualBrush>
</Rectangle.OpacityMask>
</Rectangle>
</Grid>
笏不工作：
图标以我想要的不同方式缩放。
如果我使用
<VisualBrush Stretch="None">，则图标都具有相同的大小，但是当我使矩形变大时，它们的大小不会增加。这正是我对 Stretch = "None" 的期望，但不是我需要的。
如果我使用
<VisualBrush Stretch="Uniform">，图标会放大到矩形大小，但它们会变得太大，并且大小会有所不同。（“雪佛龙”比“出口”图标大）。我认为 VisualBrush 忽略了画布和路径的大小，而是使用路径可见部分的大小。
其他拉伸变体（如填充）也不起作用：
我需要的：
图标应该像普通图标一样随着矩形大小而增长和缩小。但它们应该以相同的比例增长/缩小。
问题：
是否有可能的设置让我获得所需的行为？
奖金：
我想在不修改 ViewBox 或其内容的情况下实现所需的功能，因为那是 Inkscape 自动生成的代码。
我的测试页面的完整代码：
<Window x:Class="Testprojekt.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:Testprojekt"
mc:Ignorable="d"
Title="MainWindow" WindowStyle="None" Width="88" Height="200" FontSize="8" >
<Grid >
<StackPanel >
<Label>Stretch="None"</Label>
<!-- Rectangle size = SVG-size , Stretch="None" -->
<StackPanel Orientation="Horizontal">
<Grid Background="Green" Margin="4">
<Rectangle Fill="Blue" Width="24" Height="24" >
<Rectangle.OpacityMask>
<VisualBrush Stretch="None">
<VisualBrush.Visual>
<!-- from SVG (baseline-chevron_right-24px)-->
<Viewbox xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" Stretch="Uniform">
<Canvas Width="24" Height="24">
<Canvas.RenderTransform>
<TranslateTransform X="0" Y="0"/>
</Canvas.RenderTransform>
<Canvas.Resources/>
<!--Unknown tag: metadata-->
<!--Unknown tag: sodipodi:namedview-->
<Path xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Fill="#000000" Width="24" Height="24">
<Path.Data>
<PathGeometry Figures="M10 6L8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z" FillRule="NonZero"/>
</Path.Data>
</Path>
<Path xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" >
<Path.Data>
<PathGeometry Figures="M0 0h24v24H0z" FillRule="NonZero"/>
</Path.Data>
</Path>
</Canvas>
</Viewbox>
<!-- end from SVG-->
</VisualBrush.Visual>
</VisualBrush>
</Rectangle.OpacityMask>
</Rectangle>
</Grid>
<Grid Background="Green" Margin="4">
<Rectangle Fill="Blue" Width="24" Height="24" >
<Rectangle.OpacityMask>
<VisualBrush Stretch="None">
<VisualBrush.Visual>
<!-- from SVG (baseline-save_alt-24px)-->
<Viewbox xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" Stretch="Uniform">
<Canvas Width="24" Height="24">
<Canvas.RenderTransform>
<TranslateTransform X="0" Y="0"/>
</Canvas.RenderTransform>
<Canvas.Resources/>
<!--Unknown tag: metadata-->
<!--Unknown tag: sodipodi:namedview-->
<Path xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Fill="#000000" Width="24" Height="24">
<Path.Data>
<PathGeometry Figures="M19 12v7H5v-7H3v7c0 1.1.9 2 2 2h14c1.1 0 2-.9 2-2v-7h-2zm-6 .67l2.59-2.58L17 11.5l-5 5-5-5 1.41-1.41L11 12.67V3h2z" FillRule="NonZero"/>
</Path.Data>
</Path>
<Path xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" >
<Path.Data>
<PathGeometry Figures="M0 0h24v24H0z" FillRule="NonZero"/>
</Path.Data>
</Path>
</Canvas>
</Viewbox>
<!-- end from SVG-->
</VisualBrush.Visual>
</VisualBrush>
</Rectangle.OpacityMask>
</Rectangle>
</Grid>
</StackPanel>
<!-- Rectangle size > SVG-size , Stretch="None" -->
<StackPanel Orientation="Horizontal">
<Grid Background="Green" Margin="4">
<Rectangle Fill="Blue" Width="32" Height="32" >
<Rectangle.OpacityMask>
<VisualBrush Stretch="None">
<VisualBrush.Visual>
<!-- from SVG (baseline-chevron_right-24px)-->
<Viewbox xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" Stretch="Uniform">
<Canvas Width="24" Height="24">
<Canvas.RenderTransform>
<TranslateTransform X="0" Y="0"/>
</Canvas.RenderTransform>
<Canvas.Resources/>
<!--Unknown tag: metadata-->
<!--Unknown tag: sodipodi:namedview-->
<Path xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Fill="#000000" Width="24" Height="24">
<Path.Data>
<PathGeometry Figures="M10 6L8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z" FillRule="NonZero"/>
</Path.Data>
</Path>
<Path xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" >
<Path.Data>
<PathGeometry Figures="M0 0h24v24H0z" FillRule="NonZero"/>
</Path.Data>
</Path>
</Canvas>
</Viewbox>
<!-- end from SVG-->
</VisualBrush.Visual>
</VisualBrush>
</Rectangle.OpacityMask>
</Rectangle>
</Grid>
<Grid Background="Green" Margin="4">
<Rectangle Fill="Blue" Width="32" Height="32" >
<Rectangle.OpacityMask>
<VisualBrush Stretch="None">
<VisualBrush.Visual>
<!-- from SVG (baseline-save_alt-24px)-->
<Viewbox xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" Stretch="Uniform">
<Canvas Width="24" Height="24">
<Canvas.RenderTransform>
<TranslateTransform X="0" Y="0"/>
</Canvas.RenderTransform>
<Canvas.Resources/>
<!--Unknown tag: metadata-->
<!--Unknown tag: sodipodi:namedview-->
<Path xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Fill="#000000" Width="24" Height="24">
<Path.Data>
<PathGeometry Figures="M19 12v7H5v-7H3v7c0 1.1.9 2 2 2h14c1.1 0 2-.9 2-2v-7h-2zm-6 .67l2.59-2.58L17 11.5l-5 5-5-5 1.41-1.41L11 12.67V3h2z" FillRule="NonZero"/>
</Path.Data>
</Path>
<Path xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" >
<Path.Data>
<PathGeometry Figures="M0 0h24v24H0z" FillRule="NonZero"/>
</Path.Data>
</Path>
</Canvas>
</Viewbox>
<!-- end from SVG-->
</VisualBrush.Visual>
</VisualBrush>
</Rectangle.OpacityMask>
</Rectangle>
</Grid>
</StackPanel>
<Label>Stretch="Uniform"</Label>
<!-- Rectangle size = SVG-size , Stretch="Uniform" -->
<StackPanel Orientation="Horizontal">
<Grid Background="Green" Margin="4">
<Rectangle Fill="Blue" Width="24" Height="24" >
<Rectangle.OpacityMask>
<VisualBrush Stretch="Uniform">
<VisualBrush.Visual>
<!-- from SVG (baseline-chevron_right-24px)-->
<Viewbox xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" Stretch="Uniform">
<Canvas Width="24" Height="24">
<Canvas.RenderTransform>
<TranslateTransform X="0" Y="0"/>
</Canvas.RenderTransform>
<Canvas.Resources/>
<!--Unknown tag: metadata-->
<!--Unknown tag: sodipodi:namedview-->
<Path xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Fill="#000000" Width="24" Height="24">
<Path.Data>
<PathGeometry Figures="M10 6L8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z" FillRule="NonZero"/>
</Path.Data>
</Path>
<Path xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" >
<Path.Data >
<PathGeometry Figures="M0 0h24v24H0z" FillRule="NonZero" />
</Path.Data>
</Path>
</Canvas>
</Viewbox>
<!-- end from SVG-->
</VisualBrush.Visual>
</VisualBrush>
</Rectangle.OpacityMask>
</Rectangle>
</Grid>
<Grid Background="Green" Margin="4">
<Rectangle Fill="Blue" Width="24" Height="24" >
<Rectangle.OpacityMask>
<VisualBrush Stretch="Uniform">
<VisualBrush.Visual>
<!-- from SVG (baseline-save_alt-24px)-->
<Viewbox xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" Stretch="Uniform">
<Canvas Width="24" Height="24">
<Canvas.RenderTransform>
<TranslateTransform X="0" Y="0"/>
</Canvas.RenderTransform>
<Canvas.Resources/>
<!--Unknown tag: metadata-->
<!--Unknown tag: sodipodi:namedview-->
<Path xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Fill="#000000" Width="24" Height="24">
<Path.Data>
<PathGeometry Figures="M19 12v7H5v-7H3v7c0 1.1.9 2 2 2h14c1.1 0 2-.9 2-2v-7h-2zm-6 .67l2.59-2.58L17 11.5l-5 5-5-5 1.41-1.41L11 12.67V3h2z" FillRule="NonZero"/>
</Path.Data>
</Path>
<Path xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
<Path.Data>
<PathGeometry Figures="M0 0h24v24H0z" FillRule="NonZero"/>
</Path.Data>
</Path>
</Canvas>
</Viewbox>
<!-- end from SVG-->
</VisualBrush.Visual>
</VisualBrush>
</Rectangle.OpacityMask>
</Rectangle>
</Grid>
</StackPanel>
<!-- Rectangle size > SVG-size , Stretch="Uniform" -->
<StackPanel Orientation="Horizontal">
<Grid Background="Green" Margin="4">
<Rectangle Fill="Blue" Width="32" Height="32" >
<Rectangle.OpacityMask>
<VisualBrush Stretch="Uniform">
<VisualBrush.Visual>
<!-- from SVG (baseline-chevron_right-24px)-->
<Viewbox xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" Stretch="Uniform">
<Canvas Width="24" Height="24">
<Canvas.RenderTransform>
<TranslateTransform X="0" Y="0"/>
</Canvas.RenderTransform>
<Canvas.Resources/>
<!--Unknown tag: metadata-->
<!--Unknown tag: sodipodi:namedview-->
<Path xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Fill="#000000" Width="24" Height="24">
<Path.Data>
<PathGeometry Figures="M10 6L8.59 7.41 13.17 12l-4.58 4.59L10 18l6-6z" FillRule="NonZero"/>
</Path.Data>
</Path>
<Path xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" >
<Path.Data >
<PathGeometry Figures="M0 0h24v24H0z" FillRule="NonZero" />
</Path.Data>
</Path>
</Canvas>
</Viewbox>
<!-- end from SVG-->
</VisualBrush.Visual>
</VisualBrush>
</Rectangle.OpacityMask>
</Rectangle>
</Grid>
<Grid Background="Green" Margin="4">
<Rectangle Fill="Blue" Width="32" Height="32" >
<Rectangle.OpacityMask>
<VisualBrush Stretch="Uniform">
<VisualBrush.Visual>
<!-- from SVG (baseline-save_alt-24px)-->
<Viewbox xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" Stretch="Uniform">
<Canvas Width="24" Height="24">
<Canvas.RenderTransform>
<TranslateTransform X="0" Y="0"/>
</Canvas.RenderTransform>
<Canvas.Resources/>
<!--Unknown tag: metadata-->
<!--Unknown tag: sodipodi:namedview-->
<Path xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Fill="#000000" Width="24" Height="24">
<Path.Data>
<PathGeometry Figures="M19 12v7H5v-7H3v7c0 1.1.9 2 2 2h14c1.1 0 2-.9 2-2v-7h-2zm-6 .67l2.59-2.58L17 11.5l-5 5-5-5 1.41-1.41L11 12.67V3h2z" FillRule="NonZero"/>
</Path.Data>
</Path>
<Path xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
<Path.Data>
<PathGeometry Figures="M0 0h24v24H0z" FillRule="NonZero"/>
</Path.Data>
</Path>
</Canvas>
</Viewbox>
<!-- end from SVG-->
</VisualBrush.Visual>
</VisualBrush>
</Rectangle.OpacityMask>
</Rectangle>
</Grid>
</StackPanel>
</StackPanel>
</Grid>