500135 - Support @font-face on OS/2

Status: RESOLVED WORKSFORME

(Core :: Graphics, defect)

Description

[Peter Weilbacher]

We haven't managed to get @font-face working on OS/2. Strategy would be to go through the Thebes code to determine how that is done on Linux (so how gfxPangoFonts and/or gfxFT2Fonts are tied to gfxUserFontSet) and add similar code for OS/2 (in gfxOS2Fonts).

In the past I thought that we would need to change the FontConfig port that we use but I think it now works differently on Linux (not going through FC).

(I mark this bug as major as this is the main FF 3.5 feature that we don't support yet.)

Comment 1

[Rich Walsh]

I'm working on it...

Comment 2

[Rich Walsh]

I worked on this for a while, copying Linux code I didn't understand into OS/2 code I didn't understand.  I got to to compile OK but never got it to work.  Peter, since you're the only one who knows the font code, I don't think @font-face will happen without your involvement.

Comment 3

[Peter Weilbacher]

I guess that means we'll never get it implemented. My time is so limited right now (and I don't see that changing for the better any time soon) that I fear I will never look at this code again.
But then, I haven't heard any strong complaints from OS/2 users yet (as opposed to printing support), so I don't think this is so urgent anyway.

Comment 4

[Peter Weilbacher]

At some point I posted this to the newsgroup:

   I don't think downloaded fonts should be added to the configuration[1].
   In principle, all that should be needed is to FT_New_Memory_Face() the
   font from some cache location in RAM. Like here
      http://hg.mozilla.org/mozilla-central/annotate/6673479e68ee/gfx/thebes/src/gfxFT2Fonts.cpp#l89
   in CreateFontEntry() (or NewFontEntry() for PangoFonts) which I believe
   is then used in the platform's LookupLocalFont() or MakePlatformFont(). 

   [1] I meant: the configuration created by the FontConfig OS/2 port (part
       of mzfntcfgft).

I have no idea if this is still relevant, but I thought I should add this here, for reference.

Comment 5

[Steve Wendt]

Opera has some nice testcases; most of them work with Gecko on Win32.
http://dev.opera.com/articles/view/seven-web-fonts-showcases/

Comment 6

[Dave Yeo]

Going the Pango route for font display allows @font-face to work