Features/FontconfigEnableAutohinting

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(Release Notes)
(Detailed Description)
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== Detailed Description ==
 
== Detailed Description ==
 
The automatic-hinting feature in FreeType has been developed to make better rendering without fonts-provided/format-specific hints. It's stable enough because it has been maintained/improved over 10 years since launched and as we got a request in [https://bugzilla.redhat.com/show_bug.cgi?id=708525 Bug#708525], it may be a good time to enable it by default.
 
The automatic-hinting feature in FreeType has been developed to make better rendering without fonts-provided/format-specific hints. It's stable enough because it has been maintained/improved over 10 years since launched and as we got a request in [https://bugzilla.redhat.com/show_bug.cgi?id=708525 Bug#708525], it may be a good time to enable it by default.
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 +
Although it's supposed to work better for most of fonts, there may be the case not working better, for instance, due to the own hinting data gives much better. in this case, the font packagers can adds the following rules in the own config file:
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 +
    <match target="font">
 +
      <test name="family" compare="eq" ignore-blanks="true"><string>FamilyName</string></test>
 +
      <edit name="autohint" mode="assign"><bool>false</bool></edit>
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    </match>
  
 
== Benefit to Fedora ==
 
== Benefit to Fedora ==

Revision as of 01:54, 20 July 2012

Contents

Fontconfig Enable Autohinting

Summary

The automatic-hinting feature in FreeType is enabled by default in Fedora 18.

Owner

Current status

  • Targeted release: Fedora 18
  • Last updated: 2012-07-09
  • Percentage of completion: 0%

Detailed Description

The automatic-hinting feature in FreeType has been developed to make better rendering without fonts-provided/format-specific hints. It's stable enough because it has been maintained/improved over 10 years since launched and as we got a request in Bug#708525, it may be a good time to enable it by default.

Although it's supposed to work better for most of fonts, there may be the case not working better, for instance, due to the own hinting data gives much better. in this case, the font packagers can adds the following rules in the own config file:

   <match target="font">
     <test name="family" compare="eq" ignore-blanks="true"><string>FamilyName</string></test>
     <edit name="autohint" mode="assign"><bool>false</bool></edit>
   </match>

Benefit to Fedora

Enabling the automatic-hinting feature may gives us the better rendering.

Scope

The change will be made in fontconfig as the global configuration. basically no need updating other packages unless it introduces the bad or poor rendering for any fonts because, for instance, the own hinting data may gives us better than this feature. in that case, those fonts may wants to be turn off this feature in their own fontconfig file.

How To Test

That may be good to compare the rendering on desktops, applications between f18 and older releases.

TBD: fonts-tweak-tool may supports changing auto-hinting. it might helps to test.

User Experience

The user will see better rendering as of this feature is enabled.

Dependencies

No dependencies. one line change in the spec file is required to be done.

Contingency Plan

Revert the change if too many fonts packages badly affects and may be good to consider enabling the auto-hinting in the fonts packages for their better rendering.

Documentation

http://freetype.sourceforge.net/autohinting/index.html

Release Notes

Fontconfig in Fedora 18 now enables the automatic-hinting feature in FreeType by default, to get better rendering on the desktops.

Comments and Discussion