[OpenJDK 2D-Dev] PING: JDK-8017773: OpenJDK7 returns incorrect TrueType font metrics

[Phil Race]

All bugs should be fixed first in the main development release and back
ported if appropriate.
And in any case any targeting you see is purely what the manager-types
are doing
because of current rules that say a bug needs to be targeted to a release.
It doesn't actually mean a thing here as I currently have no time to
even consider this bug.
I agree with the general premise that bold fonts should only be wider,
not taller but
I don't know the details of what is on the end of the various links you
provide and
I can't go grabbing code from somewhere else.

So step #1 would be for you to provide a patch I can consider under
terms of the
OCA against hg.openjdk.java/net/jdk9/client/jdk ..

-phil.


On 4/3/2014 7:13 AM, Yasumasa Suenaga wrote:
> Hi all,
>
> Have you checked this issue?
>
> This issue will be fixed in JDK9.
> However, I want fix it in JDK7 and JDK8.
>
>
> Yasumasa
>
>
> On 2014/03/17 9:02, Yasumasa Suenaga wrote:
>> Hi all,
>>
>> The "Fix version" of this issue has been changed into 9 from 8-pool.
>> Will this issue not be fixed in JDK7/8 ?
>>
>> I think this issue is bug of OpenJDK implementation.
>> So this issue should be fixed ASAP.
>>
>>
>> Yasumasa
>>
>> On 2014/02/13 16:38, Yasumasa Suenaga wrote:
>>> Hi all,
>>>
>>> I've reported about JDK-8017773 . Have you checked it ?
>>>
>>> I guess that many Linux distributor will ship OpenJDK8 after JDK8 GA is released.
>>> If this issue will not fix at JDK8 GA, many users who use 2D on JDK8 may encounter it.
>>>
>>> This issue occurs in OpenJDK only.
>>> However, I think there are many users who want to use 2D on OpenJDK.
>>> So I hope to fix this issue ASAP and hope to backport to JDK7.
>>>
>>>
>>> Please cooperate.
>>>
>>> Yasumasa
>>>
>>>
>>> On 2014/02/03 15:12, Yasumasa Suenaga wrote:
>>>> Hi all,
>>>>
>>>> My customer encountered this issue.
>>>> I think this issue is caused by Bug 1435 [1] and 1659 [2] in IcedTea.
>>>>
>>>> I read source code of "freetype-2.5.0-4.fc20" .
>>>> Bold style should affect Font Glyph only. However, current implementation
>>>> of OpenJDK affects Font Face. Thus value of Ascent/Descent is incorrect.
>>>>
>>>> OracleJDK seems to use sun.font.T2KFontScaler to calculate these values.
>>>> So this issue occurs in OpenJDK only.
>>>>
>>>>
>>>> I think we need to merge patches of Bug 1435 and 1659 in IcedTea
>>>> to fix JDK-8017773 .
>>>>
>>>> Could you merge these patches ?
>>>> Please cooperate.
>>>>
>>>>
>>>> Thanks,
>>>>
>>>> Yasumasa
>>>>
>>>>
>>>> [1] http://icedtea.classpath.org/bugzilla/show_bug.cgi?id=1435
>>>> [2] http://icedtea.classpath.org/bugzilla/show_bug.cgi?id=1659
>>>>
>>>>
>>>> ------ 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=IPAMincho,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=IPAMincho,name=IPAMincho,style=bold,size=50]
>>>>         Ascent:  45.60547
>>>>         Descent: 4.3945312
>>>> ----------------