implement clip-rule:evenodd

[Rwst]

this was posted to the bug tracker but moved here:

I got a warning opening svg file with inkscape 0.43 on
linux:

** (inkscape:6127): WARNING **: Unimplemented style
property SP_PROP_CLIP_RULE: value: evenodd

The svg file is attached. The svg header, containing
the property is the following:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN"
"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
<!-- Creator: CorelDRAW -->
<svg xmlns="http://www.w3.org/2000/svg"
xml:space="preserve" width="210mm" height="297mm"
style="shape-rendering:geometricPrecision;
text-rendering:geometricPrecision;
image-rendering:optimizeQuality; fill-rule:evenodd;
clip-rule:evenodd"
viewBox="0 0 210 297"
xmlns:xlink="http://www.w3.org/1999/xlink">

Best regards,
Grigory Rubtsov

[Hystrix (hystrix-)]

Thank you for taking your time to report this.
I'm opening the file with Inkscape 0.45.1, built Mar 21 2007 and can't see any error or warning, could you please check if you still get this warning with the lastest Inkscape version and report back?

[ScislaC (scislac)]

Confirmed on SVN rev 19754.

[Alex Valavanis (valavanisalex)]

Still present in Inkscape 0.48

[Gökçen Eraslan (gkcn)]

I also see the warning below:

WARNING **: Unimplemented style property SP_PROP_CLIP_RULE: value: nonzero

in inkscape 0.47.

[su_v (suv-lp)]

Related:
Bug #564080 “clip-path render bug, ignores clip-rule="evenodd"”
<https://bugs.launchpad.net/inkscape/+bug/564080>

[Andy Lutomirski (luto-mit)]

I've attached a patch that implements loading, saving, and computing of clip-rule. It doesn't address rendering or the UI, but at least we won't destroy otherwise-correct clip-rule styles now.

[Krzysztof Kosinski (tweenk)]

This has been fixed for some time now in the trunk.