[OpenJDK 2D-Dev] RFR: 8208179: Devanagari not shown with logical fonts on Windows after removal of Lucida Sans from JDK

[Jayathirth Rao]

Hi Phil,

Changes are fine.
I think script name of Telugu should be “telugu” and not “telegu”.

Thanks,
Jay

> On 25-Apr-2019, at 9:23 PM, Phil Race <philip.race at oracle.com> wrote:
> 
> Any takers ? Jay ? Also adding i18n-dev.
> 
> -phil.
> 
> On 4/20/19 4:29 PM, Philip Race wrote:
>> 
>> Bug: https://bugs.openjdk.java.net/browse/JDK-8208179
>> Webrev: http://cr.openjdk.java.net/~prr/8208179/index.html
>> 
>> The original complaint is missing devanagari in logical fonts in Oracle JDK 11.
>> I realised in looking at this that we are also missing Thai.
>> The reason is that Lucida Sans was removed and there are no windows fonts
>> configured to replace these.
>> In fixing this we can also add support for other Indic scripts and Khmer + Mongolian too
>> as Windows 7 and later all contain suitable UI fonts.
>> 
>> One wrinkle is that we will be more likely to trip over a small bug whereby
>> if we have registered one font in a family due to it being mentioned in a logical
>> font and that font can be used to synthesis another style of that font, we don't
>> go to check to see if there is a system font of the exact style.
>> FontFamily.getFont(String name, int style) has a comment warning of this possibility.
>> This was observed that Mangal hid Mangal Bold for example, and inconsistently if
>> you used the Mangal Bold font directly it was not hidden and would be used.
>> So the fix adds a call to an existing method which will resolve all fonts in that family first.
>> 
>> A test is provided which verifies the scripts are now supported by the logical fonts on Windows.
>> 
>> -phil.
>> 
>> 
>