Ops, here <https://github.com/behdad/harfbuzz/pull/134> is the actual patch.
On Fri, Sep 11, 2015 at 10:41 AM, Ebrahim Byagowi <ebrami...@gmail.com> wrote: > Hi. I have developing a dwrite backend for HarfBuzz. It is still far from > prefect, I just thought it maybe worth to be shared but it has at least > these main issues which I hope would be fixed with your help: > > - A lot of parts of TextAnalysis is copied from this > > <https://github.com/mozilla-services/services-central-legacy/blob/master/gfx/thebes/gfxDWriteTextAnalysis.cpp> > which > seems added on this patch > > <https://github.com/mozilla-services/services-central-legacy/commit/dcdb088a1041a41c819885c4d52dfff32d8fc440> > and > is MPL licensed. I hope Bas can grant the use and re-licensing of it for > developing HarfBuzz. > - I couldn't find a way to access dwrite specific headers from > cygwin/mingw/msys2 and am using a cmake build configuration > <https://github.com/ebraminio/glcourse/blob/master/harfbuzz.cmake> for > using dwrite on Visual Studio. I think if we "GetProcAddress" it like what > we do for uniscribe backend when we decided which things we need here, but > well, it is going to be more painful than that even I'd guess > - It just work when font is set on 32 point :) > - It doesn't support font features configuration > - It uses DirectWrite GDI Interop instead IDWriteFontFileStream > > <https://github.com/servo/skia/blob/master/src/utils/win/SkDWriteFontFileStream.h> > for loading the font (and many parts of the patch is actually copied from > uniscribe backend) > - It may has some more minor and major issues which I didn't remember > to note :) > > While I am not a Windows programmer and also also not being familiar with > DirectWrite and even DirectX development, the motivation for me was just to > have access to DirectWrite specific capabilities (explicitly, Kashida > justification > <https://msdn.microsoft.com/en-us/library/windows/desktop/hh994452(v=vs.85).aspx#Justification>) > in hope the features would be developed inside harfbuzz someday (this can > be accessed on Uniscribe backend, ScriptJustify > <https://maxradi.us/documents/uniscribe/#ScriptJustify> which I probably > would dig more if I see there would not any possible progress on this > approach). This patch is far from prefect but I just hoped this would be > useful for someone someday or would be merged on HarfBuzz :) >
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