Working on - JDK-8090423 - [Font] Support Font Weights other than Bold and Regular, like Light

Tom Schindl tom.schindl at
Thu Apr 23 07:58:41 UTC 2020

Hi Phil,

I haven't looked too deep into that but to the "only" problem I see is 
how the internal lookup tree is structured in "PrismFontFactory".

And yes you are right the OS/2-Table (there's even a comment in 
PrismFontFile mentionning usWeightClass) contains the necessary 
information, some mac-fonts use the header-segment so there one has to 
distinction but those font would be simply classified as BOLD(700).

I'll put that on my opensource working queue, to look a bit deeper into 
that and get back with a more in depth report (and probably questions).

The current in ability to use FontWeight is a real problem compared to 
WebUIs, and although there is a work around not using FontWeight in CSS 
it is very cumbersome.


Am 23.04.20 um 03:02 schrieb Philip Race:
> I was mulling over why if it is so easy we didn't do it and I suspect
> (haven't checked, and so long ago I can't remember off hand) that
> this code needed to run on top of the old Java 2D pipeline (wrongly
> called the Swing pipeline). And 2D did not and does not provide
> this functionality either.
> -phil.
> On 4/22/20, 3:40 PM, Philip Race wrote:
>> Sadly no one is working on it.
>> It probably is not that hard to do, the weight should be in the OS/2 
>> table
>> -phil
>> On 4/22/20, 3:26 PM, Tom Schindl wrote:
>>> Hi Kevin / Phil,
>>> I'd like to start working on JDK-8090423 but before I start investing 
>>> time I wanted to make sure nobody is working on that and if you have 
>>> any input, ideas already how to address that problem help me not 
>>> wasting time.
>>> Tom

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