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8322251: [Linux] JavaFX is not displaying CJK on Ubuntu 23.10 and later #1439

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8322251: [Linux] JavaFX is not displaying CJK on Ubuntu 23.10 and later #1439

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prrace
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@prrace prrace commented Apr 10, 2024 •
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The Linux font lookup code is rejecting CFF OpenType fonts.
Since these are becoming common because of the Noto family this could soon be quite a problem.
I expect this fix is a candidate for backporting.

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  • JDK-8322251: [Linux] JavaFX is not displaying CJK on Ubuntu 23.10 and later (Bug - P4)

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bridgekeeper bot commented Apr 10, 2024

👋 Welcome back prr! A progress list of the required criteria for merging this PR into master will be added to the body of your pull request. There are additional pull request commands available for use with this pull request.

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openjdk bot commented Apr 10, 2024 •
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@prrace This change now passes all automated pre-integration checks.

ℹ️ This project also has non-automated pre-integration requirements. Please see the file CONTRIBUTING.md for details.

After integration, the commit message for the final commit will be:

8322251: [Linux] JavaFX is not displaying CJK on Ubuntu 23.10 and later

Reviewed-by: aghaisas, angorya

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At the time when this comment was updated there had been 20 new commits pushed to the master branch:

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@openjdk openjdk bot changed the title 8322251 8322251: [Linux] JavaFX is not displaying CJK on Ubuntu 23.10 and later Apr 10, 2024
@openjdk openjdk bot added the rfr Ready for review label Apr 10, 2024
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andy-goryachev-oracle
andy-goryachev-oracle reviewed Apr 10, 2024
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modules/javafx.graphics/src/main/native-font/fontpath_linux.c
* ie TrueType and CFF format fonts.
*/
if ((fontformat != NULL) &&
((strcmp((char*)fontformat, "TrueType") != 0) &&
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Code in javax.web uses equalLettersIgnoringASCIICase in a similar situation, should we use case-insensitive comparison here?

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@prrace prrace Apr 10, 2024 •
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I thought about that but we have been using specific-case here for ever for TrueType and also in the Java 2D code - which BTW does allow CFF already and it looks for 'CFF' and more to the point the fontconfig API we are using itself explicitly looks for 'CFF' which it in turn gets by using freetype to examine font files and the API in freetype it uses says

   *  FT_Get_Font_Format
   *
   * @description:
   *  Return a string describing the format of a given face.  Possible values
   *  are 'TrueType', 'Type~1', 'BDF', 'PCF', 'Type~42', 'CID~Type~1', 'CFF',
   *  'PFR', and 'Windows~FNT'.

So it is baked in from the start what case is used.

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The windows build failure is unrelated:

curl: (28) Failed to connect to www.cygwin.com port 443 after 21041 ms: Couldn't connect to server
Start-Process: D:\a\_temp\46314114-c9de-404b-9d61-702019e10c7b.ps1:4
Line |
   4 |  Start-Process -FilePath "$HOME\cygwin\setup-x86_64.exe" -ArgumentList …
     |  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     | This command cannot be run due to the error: The system cannot find the file specified.
Error: Process completed with exit code 1.

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aghaisas approved these changes Apr 18, 2024
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The fix looks straightforward and logical.

@openjdk openjdk bot added the ready Ready to be integrated label Apr 18, 2024
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the code looks right, I just can't verify the fix on a real system.

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prrace commented Apr 18, 2024

the code looks right, I just can't verify the fix on a real system.

Well, yes, I had to install 23.10 in a VirtualBox VM, then clone FX on to it along with all the tools
needed to build and test.
So it is definitely something that needs work to actually test. It was more work than the actual bug fix.

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I already had 23.10 ARM VM's configured. I was able to reproduce the original bug and verify that this PR fixes it. I can't comment on the code itself.

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thank you @beldenfox for confirming!

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prrace commented Apr 19, 2024

/integrate

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openjdk bot commented Apr 19, 2024

Going to push as commit 5182ea1.
Since your change was applied there have been 20 commits pushed to the master branch:

Your commit was automatically rebased without conflicts.

@openjdk openjdk bot added the integrated Pull request has been integrated label Apr 19, 2024
@openjdk openjdk bot closed this Apr 19, 2024
@openjdk openjdk bot removed ready Ready to be integrated rfr Ready for review labels Apr 19, 2024
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@prrace Pushed as commit 5182ea1.

💡 You may see a message that your pull request was closed with unmerged commits. This can be safely ignored.

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@aghaisas aghaisas aghaisas approved these changes

@andy-goryachev-oracle andy-goryachev-oracle andy-goryachev-oracle approved these changes

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