Support --export-text-to-path when outputting plain SVG

[Philipp Hagemeister]

Currently, --export-text-to-path only works with PS/EPS/PDF output. It should work with plain SVG output as well, and that has been requested multiple times (http://stackoverflow.com/questions/8422558/converting-text-into-path-svg-on-server , http://stackoverflow.com/questions/8296964/is-there-a-php-library-for-drawing-text-as-a-vector-outline , http://stackoverflow.com/q/7742148/35070 ).

The attached patch implements this feature. The code should probably be moved from main.cpp, but I'm not familiar enough with inkscape to know where it would fit best.

[su_v (suv-lp)]

The same feature request had already been filed earlier:
Bug #517391 “Export-text-to-path doesn't wok with export-plain-svg (CLI)”
<https://bugs.launchpad.net/inkscape/+bug/517391>

@JazzyNico - which one to mark as duplicate, the older one or the one with a proposed patch?

[Philipp Hagemeister (phihag)]

Sorry, I hadn't seen that feature request despite searching for it. My google-fu is apparently weak. Feel free to mark this one as a duplicate; it looks the patch doesn't work correctly on groups yet (Probably because the group's content needs to be relayouted as well).

[jazzynico (jazzynico)]

@~suv - I feel it's quite the same. But since I'm too lazy to copy the patch to the oldest report, I've marked it duplicate of the newest one ;)

[Philipp Hagemeister (phihag)]

Updated the patch. This should now work with groups as well.

[Philipp Hagemeister (phihag)]

Corrected patch, should now work with all inputs.

[Philipp Hagemeister (phihag)]

Combined both patches for ease of applying.

[jazzynico (jazzynico)]

Patch tested successfully on CrunchBang 10 R20111125.
No regression found so far.

(note to self: don't forget to update the man page)

[John Smith (john-smithi)]

Thanks Philipp your patch seems to work well.
Committed to trunk r11418 for wider testing.

[xeo (thomas-pototschnig)]

Why isn't this patch included in 0.48.4?

Were there any problems which prevented the patch from being integrated in the mainline permanently?

[jazzynico (jazzynico)]

@xeo - The 0.48.x branch accepts bugfixes only, and not new features or changes that require new translations.
Here we have a new feature and changes in the man pages. That's the reason why we didn't include it in 0.48.4.

[su_v (suv-lp)]

Follow-up reports:
Bug #1262782 “inkscape --export-text-to-path - linebreak-bug with flowed text”
Bug #1262792 “inkscape --export-text-to-path --export-plain-svg - position bug”