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[Bug 379761] Re: MASTER - Font hinting does not honour gnome-settings in Firefox

To: linux-traipu@xxxxxxxxxxxxxxxxxxx
From: Bug Watch Updater <379761@xxxxxxxxxxxxxxxxxx>
Date: Tue, 11 Oct 2011 12:23:28 -0000
Reply-to: Bug 379761 <379761@xxxxxxxxxxxxxxxxxx>
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On 2007-11-20T22:42:44+00:00 Jeffrey Baker wrote:

Created attachment 289559
Screenshot

Firefox 3.0 does something differently with on-screen type.  This leads
to excessive color fringing in some cases.  Please see the attached
screenshot (which may not make any sense if you don't use an LCD
screen).  The upper text is from Firefox 2.0 and the lower is from 3.0b1

Reply at: https://bugs.launchpad.net/chromium/+bug/379761/comments/0

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On 2007-11-20T23:46:12+00:00 Roc-ocallahan wrote:

Is it different from other GTK/Pango apps on your system?

Reply at: https://bugs.launchpad.net/chromium/+bug/379761/comments/1

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On 2007-11-20T23:53:07+00:00 Jeffrey Baker wrote:

Created attachment 289572
Screenshot of native text

Screenshot is the same sentence typed into gedit with the same font,
Droid Sans 12.

Reply at: https://bugs.launchpad.net/chromium/+bug/379761/comments/2

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On 2007-11-21T02:10:28+00:00 Roc-ocallahan wrote:

Ok, I'm not really sure what's going on here. Michael might be able to
help out next week.

Reply at: https://bugs.launchpad.net/chromium/+bug/379761/comments/3

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On 2007-11-23T22:25:25+00:00 Sylvain Pasche wrote:

This may be related to the cairo version. I could see differences in
rendering between cairo 1.4 (native GTK apps) and the more recent
Firefox cairo. See bug 375591 comment 6

Reply at: https://bugs.launchpad.net/chromium/+bug/379761/comments/4

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On 2008-03-10T23:41:47+00:00 Dylan Grose wrote:

Yes, I can confirm this behaviour as well on Ubuntu Gutsy and
Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9b4pre) Gecko/2008022304
Minefield/3.0b4pre. The problem is exactly as described by the bug
creator.

Reply at: https://bugs.launchpad.net/chromium/+bug/379761/comments/5

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On 2008-03-26T15:21:15+00:00 Marek-matulka wrote:

I can confirm the same problem on Fedora 9 and Manfield 3.0 beta 4.

Reply at: https://bugs.launchpad.net/chromium/+bug/379761/comments/6

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On 2008-03-26T15:41:54+00:00 Sylvain Pasche wrote:

*** Bug 375591 has been marked as a duplicate of this bug. ***

Reply at: https://bugs.launchpad.net/chromium/+bug/379761/comments/7

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On 2008-03-26T15:49:54+00:00 Sylvain Pasche wrote:

This is clearly a cairo issue. See:

https://bugs.freedesktop.org/show_bug.cgi?id=10301

Things are actually stalled upstream unfortunately. Ubuntu/Debian users
are lucky because their cairo is patched against this bug.

Reply at: https://bugs.launchpad.net/chromium/+bug/379761/comments/8

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On 2008-06-01T13:33:29+00:00 Sylvain Pasche wrote:

*** Bug 436760 has been marked as a duplicate of this bug. ***

Reply at: https://bugs.launchpad.net/chromium/+bug/379761/comments/9

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On 2008-12-07T20:03:28+00:00 Karlt wrote:

Changing summary to reflect the current manifestation of this bug.

Reply at: https://bugs.launchpad.net/chromium/+bug/379761/comments/10

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On 2009-06-11T18:37:23+00:00 Jürgen 'jiha' Harter wrote:

Trying to build SeaMonkey on a ubuntu 9.04 machine. It builds fine when
--enable-system-cairo is not set. When setted it does not build.

What cairo libs are needed?

Reply at: https://bugs.launchpad.net/chromium/+bug/379761/comments/13

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On 2009-06-11T23:53:47+00:00 Sylvain Pasche wrote:

Look for the CAIRO_VERSION variable in the configure.in file at the top
of the source tree. For mozilla-central, that's Cairo 1.6
(http://mxr.mozilla.org/mozilla-central/source/configure.in#122).

If you have building issues, I suggest you comment in the
mozilla.dev.builds newsgroup
(http://groups.google.com/group/mozilla.dev.builds/topics for the Web
interface). You should also provide the complete error message there.

Reply at: https://bugs.launchpad.net/chromium/+bug/379761/comments/14

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On 2009-12-01T20:29:25+00:00 Serenity-katz wrote:

I was going to submit for a new bug, but this is exactly the same thing
here.  Xft and Cairo color fringing has been a long standing problem,
and David Turner (you know, Mr. Freetype) wrote a patch addressing it
loooong time ago.  Somehow the Freedesktop.org people just wouldn't
accept it, then again they don't always make the best decisions when it
comes to font rendering.  However, since Mozilla by default uses
embedded libcairo, I really don't see any reason the patch can't be
applied when building.  Turner patches can be found on his site at
freetype:

http://david.freetype.org/lcd/

which will not work for current versions of Cairo now, but there's the
ubuntu patch derived from it:

http://archive.ubuntu.com/ubuntu/pool/main/c/cairo/cairo_1.8.6-1ubuntu2.diff.gz

I also have my own version adapted from Turner's original patch that
applies cleanly against cairo 1.8.* -- which is the sole reason I build
Firefox from source on my laptop.  It would be great if Mozilla can just
apply this patch when building release binaries, as it would save a lot
of eyesore for users.

Reply at: https://bugs.launchpad.net/chromium/+bug/379761/comments/71

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On 2009-12-01T22:16:42+00:00 Mozilla-behdad wrote:

Ubuntu patches cairo and fontconfig to use the newer FreeType subpixel
filters, whereas upstream cairo doesn't (yet).  The whole thing is very
controversial since those filters are suspected to infringe patents in
the US...

So, that's where the discrepancy comes from...

Reply at: https://bugs.launchpad.net/chromium/+bug/379761/comments/72

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On 2009-12-03T22:03:12+00:00 Ken-adcstudio wrote:

Please see  Bug 512136 (https://bugzilla.mozilla.org/show_bug.cgi?id=512136)
for windows possible related bug, with a test for windows vista/7 with cleartype https://bug363861.bugzilla.mozilla.org/attachment.cgi?id=321706

Reply at: https://bugs.launchpad.net/chromium/+bug/379761/comments/75

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On 2009-12-03T22:35:40+00:00 Sylvain Pasche wrote:

(In reply to comment #15)
> Please see  Bug 512136 (https://bugzilla.mozilla.org/show_bug.cgi?id=512136)
> for windows possible related bug, with a test for windows vista/7 with
> cleartype https://bug363861.bugzilla.mozilla.org/attachment.cgi?id=321706

That's bug 363861, which isn't related to this one.

Reply at: https://bugs.launchpad.net/chromium/+bug/379761/comments/76

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On 2009-12-04T18:43:11+00:00 Serenity-katz wrote:

> ... The whole thing is very controversial
> since those filters are suspected to infringe patents in the US...

But the specific patch mentioned doesn't directly do anything about
glyphs.  It only enables lcdfilter options if it's _already compiled_
into the system's FreeType libs; that is, any patent issue would lie not
in cairo, but in the freetype binaries because the distribution or the
user chose to enable patented features, so it shouldn't be a problem for
Mozilla source to include that patch.  Am I misunderstanding the
situation here?

Reply at: https://bugs.launchpad.net/chromium/+bug/379761/comments/77

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On 2009-12-04T19:43:42+00:00 Mozilla-behdad wrote:

Can you require a freetype new enough to have that API? (I think they
were introduced in 2.3.0).  Or doing dlopen tricks again?

Reply at: https://bugs.launchpad.net/chromium/+bug/379761/comments/78

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On 2009-12-04T20:02:50+00:00 Serenity-katz wrote:

> Can you require a freetype new enough to have that API? (I think they were
> introduced in 2.3.0).  Or doing dlopen tricks again?

Turner's first lcd patch was for cairo-1.0.4, which was what, 3 years
ago? The patch I use was originally for cairo-1.2.4, also ancient.  I'd
think the lib version is a non-issue here.

Reply at: https://bugs.launchpad.net/chromium/+bug/379761/comments/79

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On 2009-12-04T20:26:36+00:00 Mozilla-behdad wrote:

However, I think it is, if the base system is still RHEL5.

Reply at: https://bugs.launchpad.net/chromium/+bug/379761/comments/80

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On 2009-12-04T21:09:02+00:00 Serenity-katz wrote:

RHEL5 itself has Cairo > 1.2.4 already, why would it be a problem?

Reply at: https://bugs.launchpad.net/chromium/+bug/379761/comments/81

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On 2009-12-04T21:34:21+00:00 Mozilla-behdad wrote:

I'm talking about FreeType version.  Cairo doesn't matter since Mozilla
ships its own cairo.

Reply at: https://bugs.launchpad.net/chromium/+bug/379761/comments/82

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On 2009-12-04T22:00:23+00:00 Serenity-katz wrote:

I meant to say, if the cairo version is recent enough, freetype is
probably ok--which was not true.  I compiled freetype-2.2.1 (that's what
RHEL5 has I think), and patched cairo fails when linking against it.
Bummer.

Reply at: https://bugs.launchpad.net/chromium/+bug/379761/comments/83

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On 2010-01-29T15:39:12+00:00 Mozilla-bugs-micahscomputing wrote:

*** Bug 541319 has been marked as a duplicate of this bug. ***

Reply at: https://bugs.launchpad.net/chromium/+bug/379761/comments/101

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On 2010-07-26T23:12:54+00:00 Karlt wrote:

*** Bug 581715 has been marked as a duplicate of this bug. ***

Reply at: https://bugs.launchpad.net/chromium/+bug/379761/comments/138

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On 2010-09-03T08:25:59+00:00 Karlt wrote:

*** Bug 590864 has been marked as a duplicate of this bug. ***

Reply at: https://bugs.launchpad.net/chromium/+bug/379761/comments/139

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On 2011-10-10T05:09:17+00:00 Karlt wrote:

*** Bug 541319 has been marked as a duplicate of this bug. ***

Reply at: https://bugs.launchpad.net/chromium/+bug/379761/comments/148

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On 2011-10-10T05:17:05+00:00 Karlt wrote:

I think this should be fixed now, as of Bug 660448 landing, though most
of the fix was in Bug 562746.

Reply at: https://bugs.launchpad.net/chromium/+bug/379761/comments/149


** Changed in: firefox
       Status: Unknown => Fix Released

** Changed in: firefox
   Importance: Unknown => Medium

** Bug watch added: Mozilla Bugzilla #512136
   https://bugzilla.mozilla.org/show_bug.cgi?id=512136

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https://bugs.launchpad.net/bugs/379761

Title:
  MASTER - Font hinting does not honour gnome-settings in Firefox

Status in Chromium:
  Invalid
Status in Chromium Browser:
  Invalid
Status in The Mozilla Firefox Browser:
  Fix Released
Status in “firefox” package in Ubuntu:
  Triaged
Status in “firefox-3.5” package in Ubuntu:
  Won't Fix
Status in “fontconfig” package in Ubuntu:
  New

Bug description:
  Binary package hint: firefox-3.5

  asac, ask that I create a new account and observe if the FF 3.5 uses
  the gnome appearance settings, it seems that it doesn't.

  I set my gnome settings to *hint full*.
  http://img206.imageshack.us/img206/9426/74100265.png, FF 3.1 (on the
  right) is hinting correctly.  F 3.5 isn't, it seems to be using *hint
  slight*.  Have a look at the gnome taskbar and the FF 3.5 menu bar the
  renderings clearly aren't the same.

  Is the hinting hardcoded somewhere?

  ProblemType: Bug
  Architecture: amd64
  DistroRelease: Ubuntu 9.04
  NonfreeKernelModules: nvidia
  Package: firefox-3.5 3.5~b4~hg20090330r24021+nobinonly-0ubuntu1
  ProcEnviron:
   SHELL=/usr/bin/zsh
   PATH=(custom, user)
   LANG=en_GB.UTF-8
  SourcePackage: firefox-3.5
  Uname: Linux 2.6.28-11-generic x86_64

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