On Jul 6, 2011, at 10:32, Fred Kiefer wrote: > > Basically wee need to ensure that all drawing operations that are > initiated by the gui drawing code get pixel aligned. Somebody will have > to test whether this is true for all drawing operations, that is, when I > use an NSBezierPath with fractional coordinates to draw into a NSView, > will the result be blurred?
Yes, Cocoa NSBezierPath supports subpixel positioning. In fact, the most common question from beginners is why one-pixel rectangles at integer coordinates are drawn two pixels wide, and this is the answer. Developers writing custom views are expected to use -centerScanRect: and related coordinate transform functions to ensure grid-aligned drawing under transformation and UI scaling, and I assume the standard views do too. -- Jens Ayton _______________________________________________ Gnustep-dev mailing list Gnustep-dev@gnu.org https://lists.gnu.org/mailman/listinfo/gnustep-dev
