documentation-packages team mailing list archive

[Gunnar Hjalmarsson <1351092@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

There are currently several open issues related to the use of Droid Sans
Fallback for rendering Chinese content:

* Two mixed fonts when rendering Chinese in KDE/QT apps with Droid
  Sans fonts
  https://launchpad.net/bugs/1334495

* Droid Sans no longer preferred font for Chinese
  https://launchpad.net/bugs/1335482

* Chinese in Ubuntu Touch should use Heiti style sans serif font
  https://launchpad.net/bugs/1346766

Unlike e.g. fonts-wqy-microhei, the fonts-droid package installs a bunch
of fonts, of which only one is needed for Chinese. In an attempt to sort
things out I have built the fonts-android source package in my PPA with
the DroidSansFallbackFull.ttf font broken out to a separate binary
package named fonts-droid-cjk. The PPA also includes a version of
language-selector where the changes in version 0.129.2 have been
reverted.

To test it in Trusty, you should:

* Uninstall the fonts-droid package

* Install fonts-droid-cjk and language-selector-common from my PPA
  at https://launchpad.net/~gunnarhj/+archive/ubuntu/droid-test

My own tests indicate that the change to language-selector due to bug
#1335482 was a step in the wrong direction. With
DroidSansFallbackFull.ttf as the only installed font from the Droid Sans
family, you get rid of possible confusion that might have resulted in
the issue reported in that bug.

$ LANG=zh_CN.UTF-8 fc-match -s 'sans-serif' | head -n 5
DroidSansFallbackFull.ttf: "Droid Sans Fallback" "Regular"
uming.ttc: "AR PL UMing CN" "Light"
uming.ttc: "AR PL UMing HK" "Light"
ukai.ttc: "AR PL UKai CN" "Book"
DejaVuSans.ttf: "DejaVu Sans" "Book"

Also, if we would take this route, it might be easier to fix a
configuration that makes Droid Sans Fallback work well with qt apps.
(This is pure theory/hope so far.)

Looking forward to your comments.

** Affects: fonts-android (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: language-selector (Ubuntu)
     Importance: Undecided
         Status: New

** Also affects: language-selector (Ubuntu)
   Importance: Undecided
       Status: New

-- 
You received this bug notification because you are a member of
Documentation Packages, which is subscribed to fonts-android in Ubuntu.
https://bugs.launchpad.net/bugs/1351092

Title:
  Configuration of the Droid Sans Fallback font

Status in “fonts-android” package in Ubuntu:
  New
Status in “language-selector” package in Ubuntu:
  New

Bug description:
  There are currently several open issues related to the use of Droid
  Sans Fallback for rendering Chinese content:

  * Two mixed fonts when rendering Chinese in KDE/QT apps with Droid
    Sans fonts
    https://launchpad.net/bugs/1334495

  * Droid Sans no longer preferred font for Chinese
    https://launchpad.net/bugs/1335482

  * Chinese in Ubuntu Touch should use Heiti style sans serif font
    https://launchpad.net/bugs/1346766

  Unlike e.g. fonts-wqy-microhei, the fonts-droid package installs a
  bunch of fonts, of which only one is needed for Chinese. In an attempt
  to sort things out I have built the fonts-android source package in my
  PPA with the DroidSansFallbackFull.ttf font broken out to a separate
  binary package named fonts-droid-cjk. The PPA also includes a version
  of language-selector where the changes in version 0.129.2 have been
  reverted.

  To test it in Trusty, you should:

  * Uninstall the fonts-droid package

  * Install fonts-droid-cjk and language-selector-common from my PPA
    at https://launchpad.net/~gunnarhj/+archive/ubuntu/droid-test

  My own tests indicate that the change to language-selector due to bug
  #1335482 was a step in the wrong direction. With
  DroidSansFallbackFull.ttf as the only installed font from the Droid
  Sans family, you get rid of possible confusion that might have
  resulted in the issue reported in that bug.

  $ LANG=zh_CN.UTF-8 fc-match -s 'sans-serif' | head -n 5
  DroidSansFallbackFull.ttf: "Droid Sans Fallback" "Regular"
  uming.ttc: "AR PL UMing CN" "Light"
  uming.ttc: "AR PL UMing HK" "Light"
  ukai.ttc: "AR PL UKai CN" "Book"
  DejaVuSans.ttf: "DejaVu Sans" "Book"

  Also, if we would take this route, it might be easier to fix a
  configuration that makes Droid Sans Fallback work well with qt apps.
  (This is pure theory/hope so far.)

  Looking forward to your comments.

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