Wavedrom diagram rendering issues (font, dotted lines)

[magistere]

Hello, I'm trying to use svg2pdf to convert SVG files of Wavedrom diagrams generated by https://github.com/wallento/wavedrompy, but the rendering of text and dotted lines is different from SVG rendering in the browser and seems wrong. Input SVG: PDF from svg2pdf:

[LaurenzV]

That's what I get:

The font looks right to me, you probably just don't have it installed correctly or for some reason svg2pdf just can't find it. See also #44, font handling is definitely something that should be improved.

As for the dotted lines, something indeed seems to be going wrong here, I will try to investigate it in the next few days.

[LaurenzV]

MRP:

<?xml version="1.0" encoding="utf-8" ?>
<svg height="200"
     width="200" xmlns="http://www.w3.org/2000/svg"
     xmlns:xlink="http://www.w3.org/1999/xlink">
    <g>
        <g transform="translate(80.5,0.5)">
            <path d="m 0,0 0,150" id="gmark_0_0" style="stroke:#888;stroke-width:30;stroke-dasharray:1,3"/>
        </g>
    </g>
</svg>

Output:

The bug only seems to appear in Chrome and Adobe Acrobat.

[LaurenzV]

So it boils down to this example:

<svg id="svg1" viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg">
    <path d="M 100,25 L 100,175" fill="blue" stroke-opacity="0" stroke="green" />
</svg>

For some reason, Chrome and Acrobat will apply a fill to a line even though it's just a line...

[magistere]

Thanks, Laurenz! The font issue is resolved, Helvetica is set as font-family in that SVG, and it seems that browsers just handle it as sans-serif on Windows for better compatibility. Yes, dotted-lines issue depends on the PDF viewer. In Firefox the rendering is perfect, but in more popular Chrome and Acrobat it is not.

[LaurenzV]

Yeah, I'll think about how we can circumvent this.

[LaurenzV]

Happy to say that I managed to fix it, but it will be some time before I can open a PR because we need a new release of resvg (which has just been updated, so might probably be a while before that happens).

[magistere]

Great! Thank you!