[In the future, please *always* write to `freetype-devel@nongnu.org',
not to me privately.]
Hello Alekh!
Thanks for your interest in FreeType's GSoC project. Note, however,
that you are far too early – while FreeType is going to apply for
GSoC, it isn't sure yet that it will also be selected...
> I am a Computer Science Engineering Student. I want to work on the
> project of Freetype open source software titled "Add support for the
> '*SVG*' OpenType table to render color fonts". As "Scalar Vector
> Graphics" is an image file format which is gaining popularity due to
> its better resolution than other file format like *JPEG*, *PNG*,
> *GIF*. Most of the major browsers like Chrome, Mozilla, Opera and
> Microsoft Edge have '*SVG*' rendering support. So it is now a need
> of time to make Freetype able to support '*SVG*' OpenType font for
> color font rendering, which allows multiple colors or gradients in a
> single glyph.
Be careful to make a distinction between SVG support in a browser and
in an OpenType font. These things are *not* related! In particular,
FreeType is a font *rendering* library, this is, it produces bitmaps
and/or pixmaps. It doesn't produce outlines.
> The most suitable free library that I have investigated can be
> '*librsvg*' by *GNOME* to make Freetype render color fonts.
OK. However, such an investigation would be part of GSoC proper.
> Creating a new module is a better option as it will keep the earlier
> source undisturbed. But if complete integration into current main
> API stuff is needed keeping in mind the long term sustainability of
> Freetype font renderer. Then adding functions to test the font for
> 'svg', for extracting data from 'svg' OpenType table for new
> library, transferring bitmap output to the Freetype finally will be
> required.
Again, this should be evaluated while doing the GSoC project.
> The best thing is that external library '*librsvg*' is also written
> mostly in C and exists since 'svg' was standardised.
Hmm. As far as I can see, librsvg is moving to Rust as the primary
source code language... Fortunately, this is not relevant as long as
a C API is available that FreeType can use.
> FreeType is used in most linux distributions and making it support
> '*SVG*' OpenType font will make it truly updated. I have mailed
> earlier also to work on this project. I will like to continue this
> as my *GSOC* project.
It's too early to talk about that. However, in case FreeType gets
selected as a GSoC mentoring project, you are welcomed to submit a
proposal!
> But irrespective of this fact I will love to contribute to make
> FreeType up-to-date.
This would be great!
> Can you please suggest which approach should be tried to integrate
> the external library? As modular will leave rest of code of
> Freetype undisturbed while the other one will eliminate need to
> define functions to extract the data for external library and then
> again transfer the bitmap output to Freetype.
Reading my responses above I think you can already guess my answer: I
can't suggest an approach – it's something to be evaluated as part of
the GSoC project :-)
Werner
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