Respect absolute coordinates for tspan

[claudep]

Fixes #81.

[jdugge]

That looks really good, thanks for the fast response! The conversion of the plot attached to #81 does indeed work much better now, however when converting the airbus.svg from the samples/misc directory, the second line of text ("Seating layout") gets lost with this commit.

The text/tspan tag in airbus.svg looks like this:

<text transform="matrix(0.9387 0 0 1 312.7847 24.2568)" style="fill:#CFCFCF;stroke:none; font-size:27.9868;letter-spacing:0em;">
<tspan x="0" y="0">AIRBUS A340</tspan>
<tspan x="-10.761" y="33.487">Seating Layout</tspan>
</text>

There's no y key in the text span, only a transform matrix.

[claudep]

Nice catch, the patch needs improvement then...

[claudep]

I pushed a fix. I appreciate your careful review!

[deeplook]

Thanks, I hope I can look at it this evening.

[deeplook]

Merged. Made me look at samples/W3C_SVG_12_TinyTestSuite/svg/text*.svg again, and have a big sigh at the missing features here...

[claudep]

Thanks, I'll try to add basic support for em units soon.

[deeplook]

BTW, for @jdugge's sample file I'm getting overlapped text bits now near the origin like this:

[claudep]

Yes, that is missing em unit support.