<AWT Dev> [9] Review Request: 8177841 Some java/awt/Robot tests can be improved

Thu Mar 30 19:11:14 UTC 2017

Hello,
Please review the fix for jdk9.

Initially I found a typo in the HiDPIRobotMouseClick.java. It contains the «Dsun.java2d.win.uiScale» option, which should be Dsun.java2d.uiScale or Dsun.java2d.win.uiScaleX/Y.
But when I verified the fix, the test fails if executed w/o any options (my system has 125% DPI).

So I decided to update it and related HiDPIRobotScreenCaptureTest to validated more modes.

- Default(w/o options), useful if the system has some default scale.
- scale = 1 is useful when the tests are executed on HiDPI systems.

I am not sure why these tests sets the Windows L&F because it uses only awt Frame.  
I’ll file a separate bug for HiDPIRobotMouseClick.java + 125% DPI.

Bug: https://bugs.openjdk.java.net/browse/JDK-8177841
Webrev can be found at: http://cr.openjdk.java.net/~serb/8177841/webrev.00