[OpenJDK 2D-Dev] [13] JDK-8219901: Noto fonts for East Asian countries cannot belong to CompositeFont

[Toshio 5 Nakamura]

Hi Phil,

Thank you so much for your reviewing.

Yes, "family" part can be removed with a few changes in
"src/java.desktop/unix/classes/sun/awt/FcFontManager.java".

The updated webrev is:
http://cr.openjdk.java.net/~tnakamura/8219901/webrev.01/

>  So you don't need to clean everything - just your develop -internal
> and -ea folders.
Yes, thank you for the clarification.

Thanks,
Toshio Nakamura

Philip Race <philip.race at oracle.com> wrote on 2019/03/10 18:05:18:

> From: Philip Race <philip.race at oracle.com>
> To: Toshio 5 Nakamura <TOSHIONA at jp.ibm.com>
> Cc: 2d-dev <2d-dev at openjdk.java.net>
> Date: 2019/03/10 18:05
> Subject: Re: [OpenJDK 2D-Dev] [13] JDK-8219901: Noto fonts for East
> Asian countries cannot belong to CompositeFont
>
> I can sponsor this but first :
>
> You seem to have made "family" redundant but aren't removing it.
> There's no point in writing it out if nothing uses it on reading.
> So we should remove it unless you can explain why you think it should be
kept.
>
> I don't think this (removing it) is a problem for backports or
> compatibility of the
> format since release name is part of the file name where we write
> the information,
> and such a file name will necessarily be a consequence of a feature
> or update release
> containing this fix.
>
> Where it might be an issue is testing on 13-ea builds since they all
report
> that as the version string so for testing you may need to clean out your
> ~/.java/fonts/13-ea folder. The same is for your 13-internal private
builds.
>
> I think this is your point when you wrote :-
>
>> The cached font list is stored under ~/.java/fonts directory.
>> We should delete it before applying the fix.
>
>  So you don't need to clean everything - just your develop -internal
> and -ea folders.
>
> Meanwhile I tested it .. and it seemed OK but I am still trying to join
> up all the dots to make sure it is all correct code-wise.
>
> -phil
>
> On 2/28/19, 3:21 PM, Toshio 5 Nakamura wrote:
> Hi,
>
> Could you review the fix and may I have a sponsor for it?
>
> Bug: https://bugs.openjdk.java.net/browse/JDK-8219901
> Webrev: http://cr.openjdk.java.net/~tnakamura/8219901/webrev.00/
>
> Issue:
> Even if Google Noto fonts[1] were installed and listed by fontconfig
library
> on Linux, CompositeFont couldn't contain it.
>
> Fix description:
> "src/java.desktop/share/classes/sun/font/CompositeFont.java" (l. 296)
> validates the target font by comparing names. But, the current code
> compared FamilyName with FullName (Font.getFontName()).
> Then, Noto font was treated as invalid.
> "src/java.desktop/unix/classes/sun/font/FcFontConfiguration.java"
> should provide FullName.
>
> The cached font list is stored under ~/.java/fonts directory.
> We should delete it before applying the fix.
>
> This fix is possible to change the default font, if CompositeFont
> is used (especially under Ubuntu18.04 and East Asian settings).
> But, I believe the fixed behavior is correct.
>
> [1] https://www.google.com/get/noto/
>
> Thanks,
> Toshio Nakamura
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