gui: Crisper crossword grid thumbnail
Context
Before:
After:
Yes, thumbnail is small, maybe I should make it bigger. Also, text is still blurry, not sure whether I can do something about it.
What has changed?
Main Changes
gui
- Snap lines to pixels to avoid blur
Others
- Avoid calling the same function with same parameters in a loop, just create local variables
Edited by Antoine Belvire