Bug 1435: [IcedTea7] OpenJDK 7 returns incorrect TrueType font metrics

[Andrew Hughes]

----- Original Message -----
> Hi all,
> 
> My customer encountered this issue.
> Status of this issue is resolved. However, if bold style is set,
> this issue is appeared yet.
> 
> I read source code of "freetype-2.5.0-4.fc20" .
> Bold style should not affect FontFace. However, current implementation
> of OpenJDK affects it to Font Glyph. Thus value of Ascent/Descent is
> incorrect.
> 
> I've made patch for this issue as "fontScaler.patch" which is attached
> on this email. Could you review this ?
> 
> This issue is also booked in JBS as JDK-8017773: OpenJDK7 returns incorrect
> TrueType font metrics . I think my patch will be fixed this issue too.
> 
> https://bugs.openjdk.java.net/browse/JDK-8017773
> 
> 
> BTW, I have few questions:
> 
>  1. Can I reopen Bug 1435 ? Or should I book this as new issue ?
> 

New issue please.

>  2. I am commiter of HeapStats which is hosted in IcedTea.
>     If my patch is reviewed, can I commit this ?
> 

Yes.

>  3. If answer of 2. is "Yes", where should I push this ?
>     relase/icedtea7-forest-2.4 ?  ivedtea7 ?
> 

IcedTea7 and probably 2.4 as well, but will depend on review.

>  4. Can we (HeapStats committers) be a reviewer of IcedTea7 ?
> 

Anyone can.

> 
> Thanks,
> 
> Yasumasa
> 
> ------ D E T A I L S ------
> 
> I've created testcase as "JavaApplication1.java" .
> Result as:
> 
> OracleJDK 6 Update 31
> ----------------
> [root at RHEL6-5 font]# /usr/local/jdk1.6.0_31/bin/java JavaApplication1
> JDK: 1.6.0_31
>     VM: Java HotSpot(TM) 64-Bit Server VM
> 
> java.awt.Font[family=IPAMincho,name=IPAMincho,style=plain,size=50]
>      Ascent:  43.99414
>      Descent: 6.0058594
> 
> java.awt.Font[family=IPA明朝,name=IPAMincho,style=bold,size=50]
>      Ascent:  43.99414
>      Descent: 6.0058594
> ----------------
> 
> OpenJDK7 (in RHEL6.5)
> ----------------
> [root at RHEL6-5 font]# java JavaApplication1
> JDK: 1.7.0_45
>     VM: OpenJDK 64-Bit Server VM
> 
> java.awt.Font[family=IPAMincho,name=IPAMincho,style=plain,size=50]
>      Ascent:  43.99414
>      Descent: 6.0058594
> 
> java.awt.Font[family=IPA明朝,name=IPAMincho,style=bold,size=50]
>      Ascent:  45.60547
>      Descent: 4.3945312
> ----------------
> 

-- 
Andrew :)

Free Java Software Engineer
Red Hat, Inc. (http://www.redhat.com)

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