* SVG comments, transparency, and extended font styles
@ 2021-04-03 18:10 Thangalin
2021-04-03 18:25 ` Hans Hagen
0 siblings, 1 reply; 4+ messages in thread
From: Thangalin @ 2021-04-03 18:10 UTC (permalink / raw)
To: mailing list for ConTeXt users
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Issues encountered with version 2021.03.31 18:04.
1. Comments in SVG
% SOF
\startbuffer[svg]
<svg viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg">
<!-- Hello --><g><circle cx="50" cy="50" r="20"/></g></svg>
\stopbuffer
\starttext
\placefigure{}{\includesvgbuffer[svg][conversion=mp]}
\stoptext
% EOF
Expected: Black circle, no border, comment lines ignored.
Actual: Empty square.
2. Transparent stroke
% SOF
\startbuffer[svg]
<svg xmlns="http://www.w3.org/2000/svg" version="1.1">
<polygon fill="#eeffff" stroke="transparent" points="500,10 500,0 0,0 0,10"
/>
</svg>
\stopbuffer
\starttext
\placefigure{}{\includesvgbuffer[svg][conversion=mp]}
\stoptext
% EOF
Expected: Light cyan rectangle, no border (it's transparent).
Actual: Light cyan rectangle with visible border.
3. Inkscape font specification
We discussed this previously: Inkscape extends the SVG specification with a
custom style class ("-inkscape-font-specification") that allows its users
to refine font styles.
% SOF
\startbuffer[svg]
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 154.6 19.3"
width="155" height="19"><text x="-6.7" y="-2.3"><tspan x="-1.9" y="15"
style="-inkscape-font-specification:'Roboto,
Ultra-Light';font-family:Roboto;font-size:20px;font-weight:200">Roboto
Ultra-Light</tspan></text></svg>
\stopbuffer
\starttext
\placefigure{}{\includesvgbuffer[svg][conversion=mp]}
\stoptext
% EOF
Expected: "Roboto Ultra-Light" appears in Roboto Ultra-Light font.
Actual: Empty square.
Supporting this via MetaPost would help maintain backwards compatibility
(with ConTeXt invoking Inkscape).
Thank you!
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^ permalink raw reply [flat|nested] 4+ messages in thread* Re: SVG comments, transparency, and extended font styles
2021-04-03 18:10 SVG comments, transparency, and extended font styles Thangalin
@ 2021-04-03 18:25 ` Hans Hagen
2021-04-03 19:46 ` Thangalin
0 siblings, 1 reply; 4+ messages in thread
From: Hans Hagen @ 2021-04-03 18:25 UTC (permalink / raw)
To: mailing list for ConTeXt users, Thangalin
On 4/3/2021 8:10 PM, Thangalin wrote:
> Issues encountered with version 2021.03.31 18:04.
>
> 1. Comments in SVG
>
> % SOF
> \startbuffer[svg]
> <svg viewBox="0 0 100 100" xmlns="http://www.w3.org/2000/svg
> <http://www.w3.org/2000/svg>">
> <!-- Hello --><g><circle cx="50" cy="50" r="20"/></g></svg>
> \stopbuffer
>
> \starttext
> \placefigure{}{\includesvgbuffer[svg][conversion=mp]}
> \stoptext
> % EOF
>
> Expected: Black circle, no border, comment lines ignored.
> Actual: Empty square.
>
> 2. Transparent stroke
>
> % SOF
> \startbuffer[svg]
> <svg xmlns="http://www.w3.org/2000/svg <http://www.w3.org/2000/svg>"
> version="1.1">
> <polygon fill="#eeffff" stroke="transparent" points="500,10 500,0 0,0
> 0,10" />
> </svg>
> \stopbuffer
>
> \starttext
> \placefigure{}{\includesvgbuffer[svg][conversion=mp]}
> \stoptext
> % EOF
>
> Expected: Light cyan rectangle, no border (it's transparent).
> Actual: Light cyan rectangle with visible border.
i'll check it .. if I forget, remind me.
> 3. Inkscape font specification
>
> We discussed this previously: Inkscape extends the SVG specification
> with a custom style class ("-inkscape-font-specification") that allows
> its users to refine font styles.
>
> % SOF
> \startbuffer[svg]
> <svg xmlns="http://www.w3.org/2000/svg <http://www.w3.org/2000/svg>"
> viewBox="0 0 154.6 19.3" width="155" height="19"><text x="-6.7"
> y="-2.3"><tspan x="-1.9" y="15"
> style="-inkscape-font-specification:'Roboto,
> Ultra-Light';font-family:Roboto;font-size:20px;font-weight:200">Roboto
> Ultra-Light</tspan></text></svg>
> \stopbuffer
>
> \starttext
> \placefigure{}{\includesvgbuffer[svg][conversion=mp]}
> \stoptext
> % EOF
>
> Expected: "Roboto Ultra-Light" appears in Roboto Ultra-Light font.
> Actual: Empty square.
>
> Supporting this via MetaPost would help maintain backwards compatibility
> (with ConTeXt invoking Inkscape).
Hm, one should export the 'simple' SVG from inkscape, not the bloated
stuff. This is a bit like Adobe illustrator and its AI files: tons of
crap needed for an editor but not really an 'eps' file for which there
is a normal export. Once we decide to support all the weirdness there is
no end. It's like the browser css madness.
Now, with regards to remapping fonts, doing that at the tex end should
work ok (maybe some extra helper for svg to make it easier).
Hans
-----------------------------------------------------------------
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
-----------------------------------------------------------------
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage : http://www.pragma-ade.nl / http://context.aanhet.net
archive : https://bitbucket.org/phg/context-mirror/commits/
wiki : http://contextgarden.net
___________________________________________________________________________________
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2021-04-03 18:10 SVG comments, transparency, and extended font styles Thangalin
2021-04-03 18:25 ` Hans Hagen
2021-04-03 19:46 ` Thangalin
2021-04-03 21:15 ` Hans Hagen
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