[9] Review request: 8091832: Provide API for getting the Screen scale on HiDPI screens

Dr. Michael Paus mp at jugs.org
Wed Mar 30 07:12:32 UTC 2016

I'd like to know on which systems this distinction between X- and 
Y-direction is actually relevant.
I've never seen such a system before.

Am 29.03.16 um 03:25 schrieb Jim Graham:
> bug: https://bugs.openjdk.java.net/browse/JDK-8091832
> webrev: http://cr.openjdk.java.net/~flar/JDK-8091832/webrev.rt.00/
> This webrev fixes pixel snapping and application control over pixel 
> scaling on HiDPI screens:
> - snap*() methods are all updated to take the current scale into account
> - new variants of snap*() methods are added for separate X/Y control:
>     Added: Region.snapSpaceX/Y()
>     Added: Region.snapSizeX/Y()
>     Added: Region.snapPositionX/Y()
> - the non-X/Y variants of the above methods are now deprecated:
>     Deprecated: Region.snapSpace()
>     Deprecated: Region.snapSize()
>     Deprecated: Region.snapPosition()
> - methods to query the scale values of Screen objects:
>     Added: Screen.getOutputScaleX/Y()
> - properties to query and/or modify the scale values of Window objects:
>     Added Read-Only  DoubleProperty:  Window.getOutputScaleX/Y()
>     Added Read-Write BooleanProperty: 
> Window.set/getForceIntegerRenderScale()
>     Added Read-Write DoubleProperty: Window.set/getRenderScaleX/Y()
> The changes have been compiled and tested on Windows and Mac and there 
> were trivial changes needed to the Linux files to adapt to one new 
> method signature, but I haven't done the test build on Linux yet...
>             ...jim

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