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= Provide Some Bitmap Font for Pango <!-- The name of your change proposal --> =
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= Provide OpenType Bitmap Fonts <!-- The name of your change proposal --> =
  
 
== Summary ==
 
== Summary ==

Revision as of 06:15, 6 January 2020


Provide OpenType Bitmap Fonts

Summary

This proposal plans to provide some popular bitmap fonts to use with pango.

By converting some bitmap fonts from BDF/PCF format to OpenType format, applications like gnome-terminal can continue to use some bitmap fonts with the pango 1.44 package.

Owner

Current status

  • Targeted release: Fedora 32
  • Last updated: 2020-01-06
  • Tracker bug: <will be assigned by the Wrangler>
  • Release notes tracker: <will be assigned by the Wrangler>

Detailed Description

In Fedora 31, pango has been upgraded to 1.44, and switch to use harfbuzz library.

But harfbuzz doesn't support bitmap fonts or Adobe Type 1 fonts. In gnome-terminal, the bitmap fonts can't be used.

In order to use the bitmap fonts with pango 1.44, we propose to provide some popular bitmap fonts in OpenType format by fonttosfnt tool.

We plan to provide 5-10 bitmap fonts in OpenType format in some packages. The current font candidates are bitmap-lucida-typewriter-fonts, terminus-fonts and ucs-miscfixed-font.

Benefit to Fedora

Some popular bitmap fonts are used by many users.

After provided the bitmap fonts in OpenType format, users can continue to use the bitmap fonts in gnome-terminal, etc.

Scope

  • Proposal owners: Fonts SIG
  • Other developers: N/A (not a System Wide Change)
  • Release engineering: Releng issue 9130 (a check of an impact with Release Engineering is needed)
  • Policies and guidelines: N/A (not a System Wide Change)
  • Trademark approval: N/A (not needed for this Change)

Upgrade/compatibility impact

N/A (not a System Wide Change)


How To Test

N/A (not a System Wide Change)

User Experience

After converting the bitmap fonts, users will be able to use the popular bitmap fonts again with pango 1.44 in gnome-terminal, etc.

The OpenType bitmap fonts should have the similar shape for each glyph, compared with the original bitmap fonts.

Dependencies

N/A (not a System Wide Change)

Contingency Plan

  • Contingency mechanism: N/A (not a System Wide Change)
  • Contingency deadline: N/A (not a System Wide Change)
  • Blocks release? N/A (not a System Wide Change)
  • Blocks product? product

Documentation

N/A (not a System Wide Change)

Release Notes

In Fedora 32, we provide bitmap fonts with modern font format (OpenType Bitmap Font) to use with gnome-terminal and other applications which uses pango for font rendering.