Can you convert a XAML DrawingImage back into an SVG for editting?

Question

A design company made an application design in WPF 2 years ago, and now we're looking at changing the text on one of the images. No SVG files were provided, only the XAML code used, and the developer who worked on the project at the design company no longer works there. I know he used Expression Blend for the design.

Any help with possible ways to convert XAML like this to SVG would help, or even suggestions on what tools were used to generate this XAML. I saw this topic on converting XAML to SVG, but it looked like the tools only did conversions with SVGs originally converted in their tool.

A resource dictionary contains all the DrawingImage objects used to display images through the application. Here is one of the images we're looking at editting:

<DrawingImage x:Key="MotorControlBackground">
<DrawingImage.Drawing>
  <DrawingGroup>
    <DrawingGroup.Children>
      <GeometryDrawing Brush="#FF466280" Geometry="F1 M -1138.47,3547.06C -1128.45,3557.08 -1112.14,3557.17 -1102.23,3547.25L -1024.29,3469.32L -1118.83,3374.78L -1214.79,3470.74L -1138.47,3547.06 Z ">
        <GeometryDrawing.Pen>
          <Pen Thickness="2.5" MiterLimit="2.75" Brush="#FF212121"/>
        </GeometryDrawing.Pen>
      </GeometryDrawing>
      <GeometryDrawing Brush="#FFFFFFFF" Geometry="F1 M -1131.22,3533.84L -1138.68,3533.84L -1138.68,3532.34L -1135.91,3532.34L -1135.91,3521.89L -1138.68,3521.89L -1138.68,3520.4C -1137.64,3520.4 -1136.87,3520.25 -1136.38,3519.95C -1135.88,3519.65 -1135.6,3519.09 -1135.54,3518.26L -1133.99,3518.26L -1133.99,3532.34L -1131.22,3532.34L -1131.22,3533.84 Z "/>
      <!-- ... Heavily shortened. Expect around 100 more lines here ... -->
      <GeometryDrawing Geometry="F1 M -1175.94,3268.96L -1057.64,3475.82">
        <GeometryDrawing.Pen>
          <Pen Thickness="1.33333" MiterLimit="2.75" Brush="#88C7C7C7"/>
        </GeometryDrawing.Pen>
      </GeometryDrawing>
      <GeometryDrawing Geometry="F1 M -1086.99,3255.92L -1147.5,3485.59">
        <GeometryDrawing.Pen>
          <Pen Thickness="1.33333" MiterLimit="2.75" Brush="#88C7C7C7"/>
        </GeometryDrawing.Pen>
      </GeometryDrawing>
      <GeometryDrawing Brush="#FF0C407C" Geometry="F1 M -1025.41,3324.46C -1035.45,3304.48 -1051.7,3288.14 -1071.58,3278.06C -1085.54,3270.98 -1101.28,3266.99 -1117.91,3266.99C -1131.79,3266.99 -1145.06,3269.78 -1157.2,3274.82C -1182.66,3285.41 -1203.09,3305.94 -1213.63,3331.52C -1218.64,3343.71 -1221.42,3357.05 -1221.42,3371C -1221.42,3385.48 -1218.44,3399.29 -1213.06,3411.83C -1202.56,3436.34 -1182.94,3456.06 -1158.55,3466.61C -1146.05,3472.01 -1132.31,3475.02 -1117.91,3475.02C -1103.67,3475.02 -1090.09,3472.09 -1077.72,3466.81C -1052.97,3456.24 -1033.07,3436.25 -1022.56,3411.38C -1017.3,3398.95 -1014.39,3385.3 -1014.39,3371C -1014.39,3354.3 -1018.37,3338.48 -1025.41,3324.46 Z "/>
      <!-- ... shortened some more ... -->
      <GeometryDrawing Geometry="F1 M -1021.98,3324.73C -1021.98,3355.74 -1069.88,3368.43 -1117.29,3372.09C -1117.75,3372.13 -1120.57,3372.05 -1120.57,3372.05C -1167.81,3368.32 -1215.32,3355.62 -1215.32,3324.73C -1215.32,3286.57 -1170.4,3255.35 -1115.48,3255.35L -1121.82,3255.35C -1066.92,3255.35 -1021.98,3286.57 -1021.98,3324.73 Z ">
        <GeometryDrawing.Brush>
          <LinearGradientBrush StartPoint="0.548505,0.143509" EndPoint="0.548505,0.805904">
            <LinearGradientBrush.GradientStops>
              <GradientStop Color="#7FFFFFFF" Offset="0"/>
              <GradientStop Color="#00FFFFFF" Offset="1"/>
            </LinearGradientBrush.GradientStops>
          </LinearGradientBrush>
        </GeometryDrawing.Brush>
      </GeometryDrawing>
    </DrawingGroup.Children>
  </DrawingGroup>
</DrawingImage.Drawing>
</DrawingImage>

Answer 1

Inkscape (an SVG editor) has limited support for XAML.

Last time I tried it, the XAML support wasn't perfect, but that was maybe 6 months ago. It may have improved since then.