On Thu, 15 Jun 2023 08:15:44 GMT, Alexey Ivanov <[email protected]> wrote:
>> And also it's not possible to verify with background color because >> anti-aliasing, I guess. > >> And also it's not possible to verify with background color because >> anti-aliasing, I guess. > > Why is it? There's no background anti-aliasing, the background is filled with > solid color. > > You need to use > [Robot.createMultiResolutionScreenCapture](https://docs.oracle.com/en/java/javase/17/docs/api/java.desktop/java/awt/Robot.html#createMultiResolutionScreenCapture(java.awt.Rectangle)) > to get the real screen pixels rather than scaled down image as if > uiScale=1.0. > > You may need to tweak the position of the capture and the area where you > sample the pixels. It is even simpler. The bug is not `JFileChooser`-specific, it affects each and every `JTable` which has a right-aligned column. Write the test for `JTable` instead. You can have a single right-aligned column with the header text that you control (a lower case letter ‘l’ will do it greatly). You can render the table into a `BufferedImage` with the scale you need (2.25) and then analyse the pixels in the image. As simple as that. It's not necessary to create real UI for this kind of test. ------------- PR Review Comment: https://git.openjdk.org/jdk/pull/14464#discussion_r1230684004
