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

[Yasumasa Suenaga]

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 ?

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

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

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


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
----------------
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