I'm trying to figure out what is the right way to draw paths such rectangles or rounded rectangles, such that horizontal and vertical parts always fall on a full pixel and are displayed at hairline stroke width.
A long time ago there was an option to specify stroke width of 0 for that, but then it was quickly reverted. My understanding is that I need to query scale x and scale y of the device's config's transform, and use that to compute the stroke width. Here's my code - https://github.com/kirill-grouchnikov/radiance/blob/sunshine/demos/theming-demo/src/main/java/org/pushingpixels/radiance/demo/theming/main/Hairlines.java (no dependency on anything from Radiance, just the core Swing / AWT stuff). Now, running this on a Windows 10 laptop with recommended / default 250% scale factor gets the correct value of 2.5 as scale. But the visuals switch between hairline and "smudged" as I horizontally resize the frame one pixel at a time and the component shifts horizontally - https://raw.githubusercontent.com/kirill-grouchnikov/radiance/sunshine/docs/images/hairlines.png (and the horizontal lines are also not hairline) How do I make this work in Java2D across all display scale factors so that I get consistent hairlines? I see the same behavior on Java 9 and Java 17 Thanks Kirill
