<i18n dev> Problems drawing supplemental characters in Java.

[Mark Davis ☕️]

Fixes it, thanks!!


Mark <https://google.com/+MarkDavis>

 *— Il meglio è l’inimico del bene —*


On 9 April 2014 19:43, Phil Race <philip.race at oracle.com> wrote:

> So can you please update to 7u51 (current security baseline) and see if
> that cures it ?
> http://www.oracle.com/technetwork/java/javase/7u51-relnotes-2085002.html
>
> -phil.
>
> On 4/9/2014 10:29 AM, Mark Davis ☕️ wrote:
>
>> jdk1.7.0_25.jdk
>>
>>
>> Mark <https://google.com/+MarkDavis>
>> /
>> /
>> /— Il meglio è l’inimico del bene —/
>> //
>>
>>
>>
>> On 9 April 2014 18:31, Phil Race <philip.race at oracle.com <mailto:
>> philip.race at oracle.com>> wrote:
>>
>>     Sounds like https://bugs.openjdk.java.net/browse/JDK-8015556
>>     [macosx] surrogate pairs do not render properly (show up as boxes
>>     or incorrect glyphs)
>>
>>     But that was fixed in 7u40. What JDK 7 update is in use here ?
>>
>>     -phil.
>>
>>
>>     On 4/9/14 9:17 AM, Naoto Sato wrote:
>>
>>>     Hi Mark,
>>>
>>>     On 4/9/14, 3:11 AM, Mark Davis ☕️ wrote:
>>>
>>>>     I'm having some trouble with drawing supplemental characters in
>>>>     Java. It
>>>>     appears to be due to bugs in Java.
>>>>
>>>>     *First, how do I report this? And second, can anyone think of a
>>>>     work-around?*
>>>>
>>>
>>>     Here is the link to report an issue against JDK:
>>>
>>>     http://bugreport.java.com/bugreport/
>>>
>>>     Please choose "classes_2d" as the subcategory.
>>>
>>>
>>>>     This is on a Mac OS 10.9.2, JDK 7, and I am rendering a number of
>>>>     characters in a loop.
>>>>
>>>>     When I call
>>>>
>>>>                      graphics.drawString(s, xStart, ascent);
>>>>
>>>>     Each supplemental character that shares the same first char (high
>>>>     surrogate) gets the same image (see attachments).
>>>>
>>>>     It appears that it is caching by char instead of by code point.
>>>>
>>>>
>>>>     To work around the problem, I tried changing the code to draw glyph
>>>>     vectors instead.
>>>>
>>>>                      FontRenderContext frc =
>>>>     graphics.getFontRenderContext();
>>>>
>>>>                      GlyphVector gv = myFont.createGlyphVector(frc, s);
>>>>
>>>>                      ...
>>>>
>>>>                      Shape shape = gv.getOutline(xStart, ascent);
>>>>
>>>>                      graphics.draw(shape);
>>>>
>>>>     To my surprise, it got even worse: I get an unknown glyph after
>>>>     each
>>>>     image. See attachments.
>>>>
>>>>     It appears that when it is advancing through the string to get the
>>>>     glyphs, it is picking up the glyph ID for the code point, but
>>>>     then it is
>>>>     only advancing by 1, so it is always picking up garbage after each
>>>>     character.
>>>>
>>>
>>>     Yeah, your explanation does sound like what's happening in the
>>>     font rendering on MacOSX. Phil/Mike, do you have any idea what's
>>>     going on?
>>>
>>>     Naoto
>>>
>>
>>
>>
>