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{{admon/important | Comments and Explanations | The page source contains comments providing guidance to fill out each section. They are invisible when viewing this page. To read it, choose the "view source" link.<br/> '''Copy the source to a ''new page'' before making changes!  DO NOT EDIT THIS TEMPLATE FOR YOUR CHANGE PROPOSAL.'''}}
 
 
 
<!-- Self Contained or System Wide Change Proposal?
 
<!-- Self Contained or System Wide Change Proposal?
 
Use this guide to determine to which category your proposed change belongs to.
 
Use this guide to determine to which category your proposed change belongs to.
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<!-- The actual name of your proposed change page should look something like: Changes/Your_Change_Proposal_Name.  This keeps all change proposals in the same namespace -->
 
<!-- The actual name of your proposed change page should look something like: Changes/Your_Change_Proposal_Name.  This keeps all change proposals in the same namespace -->
  
= Change Proposal Name <!-- The name of your change proposal --> =
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= Provide OpenType Bitmap Fonts <!-- The name of your change proposal --> =
  
 
== Summary ==
 
== Summary ==
 
<!-- A sentence or two summarizing what this change is and what it will do. This information is used for the overall changeset summary page for each release.  
 
<!-- A sentence or two summarizing what this change is and what it will do. This information is used for the overall changeset summary page for each release.  
 
Note that motivation for the change should be in the Motivation section below, and this part should answer the question "What?" rather than "Why?". -->
 
Note that motivation for the change should be in the Motivation section below, and this part should answer the question "What?" rather than "Why?". -->
 +
 +
This proposal plans to provide some additional popular bitmap fonts in OpenType format to use with pango.
 +
 +
By providing 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 ==
 
== Owner ==
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This should link to your home wiki page so we know who you are.  
 
This should link to your home wiki page so we know who you are.  
 
-->
 
-->
* Name: [[User:FASAcountName| Your Name]]
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* Name: [[User:pwu| Peng Wu]]
<!-- Include you email address that you can be reached should people want to contact you about helping with your change, status is requested, or technical issues need to be resolved. If the change proposal is owned by a SIG, please also add a primary contact person. -->
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* Email: pwu@redhat.com
* Email: <your email address so we can contact you, invite you to meetings, etc. Please provide your Bugzilla email address if it is different from your email in FAS>
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* Name: [[User:tagoh| Akira Tagoh]]
 +
* Email: tagoh@redhat.com
 
<!--- UNCOMMENT only for Changes with assigned Shepherd (by FESCo)
 
<!--- UNCOMMENT only for Changes with assigned Shepherd (by FESCo)
 
* FESCo shepherd: [[User:FASAccountName| Shehperd name]] <email address>
 
* FESCo shepherd: [[User:FASAccountName| Shehperd name]] <email address>
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== Current status ==
 
== Current status ==
* Targeted release: [[Releases/<number> | Fedora <number> ]]  
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* Targeted release: [[Releases/32 | Fedora 32 ]]  
 
* Last updated: <!-- this is an automatic macro — you don't need to change this line -->  {{REVISIONYEAR}}-{{REVISIONMONTH}}-{{REVISIONDAY2}}  
 
* Last updated: <!-- this is an automatic macro — you don't need to change this line -->  {{REVISIONYEAR}}-{{REVISIONMONTH}}-{{REVISIONDAY2}}  
 
<!-- After the change proposal is accepted by FESCo, tracking bug is created in Bugzilla and linked to this page  
 
<!-- After the change proposal is accepted by FESCo, tracking bug is created in Bugzilla and linked to this page  
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CLOSED as NEXTRELEASE -> change is completed and verified and will be delivered in next release under development
 
CLOSED as NEXTRELEASE -> change is completed and verified and will be delivered in next release under development
 
-->
 
-->
* Tracker bug: <will be assigned by the Wrangler>
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* Tracker bug: [https://bugzilla.redhat.com/show_bug.cgi?id=1797604 #1797604]
* Release notes tracker: <will be assigned by the Wrangler>
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* Release notes tracker: [https://pagure.io/fedora-docs/release-notes/issue/443 #443]
  
 
== Detailed Description ==
 
== Detailed Description ==
  
 
<!-- Expand on the summary, if appropriate.  A couple sentences suffices to explain the goal, but the more details you can provide the better. -->
 
<!-- Expand on the summary, if appropriate.  A couple sentences suffices to explain the goal, but the more details you can provide the better. -->
 +
 +
In Fedora 31, pango has been upgraded to 1.44, and switched to use the HarfBuzz library instead of FreeType.
 +
 +
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 additional popular bitmap fonts in OpenType format by using fonttosfnt tool.
 +
 +
The bitmap font in OpenType format will be contained in new sub package.
 +
User can choose to install the bitmap font either in legacy format or OpenType format from different sub packages.
 +
 +
If install both legacy format and OpenType format fonts, sometimes it is not clear which format of the bitmap font is used.
 +
Plan to add some Conflicts line between legacy format and OpenType format font packages to avoid confusion.
 +
 +
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 ==
 
== Benefit to Fedora ==
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     https://fedoraproject.org/wiki/Changes/perl5.26 (major upgrade to a popular software stack, visible to users of that stack)
 
     https://fedoraproject.org/wiki/Changes/perl5.26 (major upgrade to a popular software stack, visible to users of that stack)
 
-->
 
-->
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Some popular bitmap fonts are used by many users.
 +
 +
After providing the bitmap fonts in OpenType format, users can continue to use the bitmap fonts in gnome-terminal, etc.
  
 
== Scope ==
 
== Scope ==
 
* Proposal owners:
 
* Proposal owners:
 +
** Convert the following bitmap fonts packages to OpenType format and make them sub-packaged.
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*** bitmap-lucida-typewriter-fonts
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*** terminus-fonts
 +
*** ucs-miscfixed-font
 
<!-- What work do the feature owners have to accomplish to complete the feature in time for release?  Is it a large change affecting many parts of the distribution or is it a very isolated change? What are those changes?-->
 
<!-- What work do the feature owners have to accomplish to complete the feature in time for release?  Is it a large change affecting many parts of the distribution or is it a very isolated change? What are those changes?-->
  
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<!-- What work do other developers have to accomplish to complete the feature in time for release?  Is it a large change affecting many parts of the distribution or is it a very isolated change? What are those changes?-->
 
<!-- What work do other developers have to accomplish to complete the feature in time for release?  Is it a large change affecting many parts of the distribution or is it a very isolated change? What are those changes?-->
  
* Release engineering: [https://pagure.io/releng/issues #Releng issue number] (a check of an impact with Release Engineering is needed) <!-- REQUIRED FOR SYSTEM WIDE CHANGES -->
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* Release engineering: [https://pagure.io/releng/issues/9130 Releng issue 9130] (a check of an impact with Release Engineering is needed) <!-- REQUIRED FOR SYSTEM WIDE CHANGES -->
 
<!-- Does this feature require coordination with release engineering (e.g. changes to installer image generation or update package delivery)?  Is a mass rebuild required?  include a link to the releng issue.  
 
<!-- Does this feature require coordination with release engineering (e.g. changes to installer image generation or update package delivery)?  Is a mass rebuild required?  include a link to the releng issue.  
 
The issue is required to be filed prior to feature submission, to ensure that someone is on board to do any process development work and testing, and that all changes make it into the pipeline; a bullet point in a change is not sufficient communication -->
 
The issue is required to be filed prior to feature submission, to ensure that someone is on board to do any process development work and testing, and that all changes make it into the pipeline; a bullet point in a change is not sufficient communication -->
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<!-- REQUIRED FOR SYSTEM WIDE CHANGES -->
 
<!-- REQUIRED FOR SYSTEM WIDE CHANGES -->
 
N/A (not a System Wide Change)  
 
N/A (not a System Wide Change)  
 +
  
 
== How To Test ==
 
== How To Test ==
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<!-- REQUIRED FOR SYSTEM WIDE CHANGES -->
 
<!-- REQUIRED FOR SYSTEM WIDE CHANGES -->
N/A (not a System Wide Change)
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Please install the terminus-fonts package.
 +
 
 +
Check if the "Terminus Regular" fonts is available in gnome-terminal,
 +
and use "Terminus Regular" fonts in gnome-terminal.
  
 
== User Experience ==
 
== User Experience ==
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  - Green has been scientifically proven to be the most relaxing color. The move to a default background color of green with green text will result in Fedora users being the most relaxed users of any operating system.
 
  - Green has been scientifically proven to be the most relaxing color. The move to a default background color of green with green text will result in Fedora users being the most relaxed users of any operating system.
 
-->
 
-->
 +
 +
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 ==
 
== Dependencies ==
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<!-- If you cannot complete your feature by the final development freeze, what is the backup plan?  This might be as simple as "Revert the shipped configuration".  Or it might not (e.g. rebuilding a number of dependent packages).  If you feature is not completed in time we want to assure others that other parts of Fedora will not be in jeopardy.  -->
 
<!-- If you cannot complete your feature by the final development freeze, what is the backup plan?  This might be as simple as "Revert the shipped configuration".  Or it might not (e.g. rebuilding a number of dependent packages).  If you feature is not completed in time we want to assure others that other parts of Fedora will not be in jeopardy.  -->
* Contingency mechanism: (What to do?  Who will do it?) N/A (not a System Wide Change)  <!-- REQUIRED FOR SYSTEM WIDE CHANGES -->
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* Contingency mechanism: N/A (not a System Wide Change)  <!-- REQUIRED FOR SYSTEM WIDE CHANGES -->
 
<!-- When is the last time the contingency mechanism can be put in place?  This will typically be the beta freeze. -->
 
<!-- When is the last time the contingency mechanism can be put in place?  This will typically be the beta freeze. -->
 
* Contingency deadline: N/A (not a System Wide Change)  <!-- REQUIRED FOR SYSTEM WIDE CHANGES -->
 
* Contingency deadline: N/A (not a System Wide Change)  <!-- REQUIRED FOR SYSTEM WIDE CHANGES -->
 
<!-- Does finishing this feature block the release, or can we ship with the feature in incomplete state? -->
 
<!-- Does finishing this feature block the release, or can we ship with the feature in incomplete state? -->
* Blocks release? N/A (not a System Wide Change), Yes/No <!-- REQUIRED FOR SYSTEM WIDE CHANGES -->
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* Blocks release? N/A (not a System Wide Change) <!-- REQUIRED FOR SYSTEM WIDE CHANGES -->
 
* Blocks product? product <!-- Applicable for Changes that blocks specific product release/Fedora.next -->
 
* Blocks product? product <!-- Applicable for Changes that blocks specific product release/Fedora.next -->
  
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<!-- REQUIRED FOR SYSTEM WIDE CHANGES -->
 
<!-- REQUIRED FOR SYSTEM WIDE CHANGES -->
N/A (not a System Wide Change)  
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N/A (not a System Wide Change)
  
 
== Release Notes ==
 
== Release Notes ==
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-->
  
[[Category:ChangePageIncomplete]]
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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.
 +
 
 +
[[Category:ChangeAcceptedF32]]
 
<!-- When your change proposal page is completed and ready for review and announcement -->
 
<!-- When your change proposal page is completed and ready for review and announcement -->
 
<!-- remove Category:ChangePageIncomplete and change it to Category:ChangeReadyForWrangler -->
 
<!-- remove Category:ChangePageIncomplete and change it to Category:ChangeReadyForWrangler -->

Latest revision as of 07:15, 25 February 2020


Provide OpenType Bitmap Fonts

Summary

This proposal plans to provide some additional popular bitmap fonts in OpenType format to use with pango.

By providing 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

Detailed Description

In Fedora 31, pango has been upgraded to 1.44, and switched to use the HarfBuzz library instead of FreeType.

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 additional popular bitmap fonts in OpenType format by using fonttosfnt tool.

The bitmap font in OpenType format will be contained in new sub package. User can choose to install the bitmap font either in legacy format or OpenType format from different sub packages.

If install both legacy format and OpenType format fonts, sometimes it is not clear which format of the bitmap font is used. Plan to add some Conflicts line between legacy format and OpenType format font packages to avoid confusion.

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

Scope

  • Proposal owners:
    • Convert the following bitmap fonts packages to OpenType format and make them sub-packaged.
      • bitmap-lucida-typewriter-fonts
      • terminus-fonts
      • ucs-miscfixed-font
  • 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

Please install the terminus-fonts package.

Check if the "Terminus Regular" fonts is available in gnome-terminal, and use "Terminus Regular" fonts in gnome-terminal.

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.