[OpenJDK 2D-Dev] [9] Review Request: 8032219 [macosx] Scrollbars looks bad under retina in Motif and Metal L&F

[Sergey Bylokhov]

Hello.
Please review the fix for jdk 9.

The problem became visible, when we draw a border across the component 
using drawLine, and expected that fillRect will clear a border of the 
component. This is incorrect, because in case of the scaled 
graphics(retina) some part of the line can be placed outside of the 
rectangles bounds.
See additional information here:
https://bugs.openjdk.java.net/browse/JDK-8011764

In the fix new methods were added to draw the lines using fillRect.

Bug: https://bugs.openjdk.java.net/browse/JDK-8032219
Webrev can be found at: http://cr.openjdk.java.net/~serb/8032219/webrev.03

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Best regards, Sergey.