Skip to content

Fix strobbing of the brush outline becasue of subpixel precision

The patch basically aligns the center of the outline to the pixel grid of the widget.

BUG:374551

Test Plan

  1. Select "Bristles 5 Flat" preset
  2. Take your stylus (mouse will not work)
  3. Hover over the canvas and see that the cursor doesn't alias anymore

Questions to be answered

  1. Should we do something like that for rotation dynamics? E.g. for brush "Dry Roller"?

Formalities Checklist

  • I confirmed this builds.
  • I confirmed Krita ran and the relevant functions work.
  • I tested the relevant unit tests and can confirm they are not broken. (If not possible, don't hesitate to ask for help!)
  • I made sure my commits build individually and have good descriptions as per KDE guidelines.
  • I made sure my code conforms to the standards set in the HACKING file.
  • I can confirm the code is licensed and attributed appropriately, and that unattributed code is mine, as per KDE Licensing Policy.

Merge request reports