ViewBox is not handled correctly

[widi8835]

I use FileSvgReader to read SVGs and use the resulting Drawing in my software. In WpfDrawingSettings EnsureViewboxPosition and EnsureViewboxSie are set to true. In v1.8.1 it works like expected. Since at least v1.8.3 the ViewBox isn't correctly handled anymore.

Tested with WpfSvgTestBox (*_expected.png faked with option EnsureViewBox=false):

1. ViewBox is not handled correctly ViewBox.svg:

     <?xml version="1.0" encoding="UTF-8" standalone="no"?>
     <!-- Created with Inkscape (http://www.inkscape.org/) -->
   
     <svg
        width="15.000001mm"
        height="15mm"
        version="1.1"
        id="svg3307"
        viewBox="7.5 7.5 41.500003 41.5"
        xmlns="http://www.w3.org/2000/svg"
        xmlns:svg="http://www.w3.org/2000/svg">
       <defs
          id="defs3304" />
       <g
          id="g21921"
          transform="matrix(1.8876249,0,0,1.8876249,20.026725,-10.180173)">
         <rect
            style="fill:#ff0000;stroke:none;stroke-width:3.68483;stroke-opacity:1"
            id="rect23997"
            width="21.9853"
            height="21.9853"
            x="-6.6362362"
            y="9.3663597" />
         <ellipse
            style="fill:#000000;stroke:#000000;stroke-width:0.244809"
            id="path3845"
            cx="10.034876"
            cy="15.062319"
            rx="5.1643801"
            ry="5.5422616" />
       </g>
       <circle
          style="fill:#000000;stroke:#000000;stroke-width:0.462107"
          id="path3843"
          cx="18.013865"
          cy="38.604069"
          r="10.223943" />
     </svg>

2. Translation is not handled correctly: it seems, that when WpfDrawingContext.UpdateBounds is call (with option 'EnsureViewboxSize=true'), translation is not considered Translation.svg:

     <?xml version="1.0" encoding="UTF-8" standalone="no"?>
     <!-- Created with Inkscape (http://www.inkscape.org/) -->
   
     <svg
        width="32mm"
        height="32mm"
        viewBox="0 0 32 31.999999"
        version="1.1"
        id="svg3307"
        xmlns="http://www.w3.org/2000/svg"
        xmlns:svg="http://www.w3.org/2000/svg">
       <defs
          id="defs3304" />
       <rect
          style="fill:#ffff00;stroke-width:0.33445"
          id="rect24983"
          width="32"
          height="32"
          x="0"
          y="0" />
       <g
          id="g3848"
          transform="translate(-47.721429,-75.213883)">
         <circle
            style="fill:#000000;stroke:#000000;stroke-width:0.334433"
            id="path3843"
            cx="70.732185"
            cy="98.952362"
            r="7.399189" />
       </g>
       <ellipse
          style="fill:#000000;stroke:#000000;stroke-width:0.334433"
          id="path3845"
          cx="8.2220945"
          cy="8.4335947"
          rx="7.0550404"
          ry="7.5712628" />
     </svg>

SVGs are created with Inkscape 1.2.2 (732a01da63, 2022-12-09)

By the way: Thanks for you work!

[paulushub]

I thought we have resolved this in #278

[widi8835]

Unfortunately not. I tested it with 1.8.4 too.

[paulushub]

Unfortunately not. I tested it with 1.8.4 too.

Maybe we just have to drop the WPF specific options, getting difficult finding a solution that will satisfy all cases.