RFR: JDK-8294427 - Check boxes and radio buttons have rendering issues on Windows in High DPI env

[Alexey Ivanov]

On Mon, 8 May 2023 18:30:36 GMT, Rajat Mahajan <rmahajan at openjdk.org> wrote:

> What is GC ?

I guess Graphics Configuration.

> Then that layout code will be broken if layout will be calculated on already visible component, I guess it should take into account the GC where the component is located.

It works fine to the best of Rajat's and my testing because the layout doesn't change. The “icons” don't scale progressively, Windows returns the same size for many DPI values, Swing scales the pixels up, this fact is taken into account when rendering the theme image to avoid additional transformations.

Changing the preferred size dynamically based on the current DPI of the monitor could be a better way in the long term. Dropping `CachedPainter` from the DPI-aware rendering path of the themes is also on the table.

-------------

PR Review Comment: https://git.openjdk.org/jdk/pull/13701#discussion_r1187767163