<Swing Dev> [9] Review request for 8058742: Text size is twice bigger under GTK L&F on Gnome with HiDPI enabled

[Sergey Bylokhov]

On 22.08.16 10:56, Semyon Sadetsky wrote:
>> But I don't suggest to use it as a global scale, use it only if other
>> scales were not set(default transform is 1).
> That also means that it will go to the global UI scale on Linuxes which
> are not gnome/unity based. And the only difference with the current
> solution that on such Linux DEs Java apps will receive some uncontrolled
> scale because testing of unsupported OSes is out of the scope. If this
> topic bothers you I suggest to create a separate bug to investigate how
> the native scale may be supported on different Linux flavors using the
> Xft.dpi env var.  Without that we may get complains that the scale
> becomes wrong on unsupported Linuxes and DEs even when hidpi is not used
> in the native desktop at all.

I do not get it how it can affect the non-dpi systems, since only in 
jdk9 on HiDPI screens default scale can have some transform. The 
difference from the current solution is that the shared code will used 
the public/shared java2d api, instead of platform specific.

>>>>>  - Take debug scale into account if it was set and skip all others.
>>>>>  - Check J2D_UISCALE
>>>>>  - Check scale-factor, text-scale-factor, text-scaling-factor.
>>>>>  - Check Xft.dpi.
>>>>>  - If non of them was set then scale=1 should be used.
>>>>
>>>
>>
>>
>


-- 
Best regards, Sergey.