Did you mean to pass 'unaligned instead of 'aligned as the last argument to `find-or-create-font`? That should disable pixel alignment.
At Mon, 16 Dec 2013 01:28:23 -0500, David Vanderson wrote: > Hello, > > It seems that draw-text always pixel-aligns its text. In the example > below, I draw a black "hello" on top of a red one, with a pixel offset > of 0, 0.1, 0.2, . . . 0.9. At least for me, I see no change until 0.5, > where the black text jumps a whole pixel (see attached image). > > Am I missing something? Do others see this behavior? (I'm on Linux) > > Thanks, > Dave > > > #lang racket/gui > > (define (draw-text dc offset) > (send dc set-text-foreground "red") > (send dc draw-text "hello" 0 0 #t) > (send dc set-text-foreground "black") > (send dc draw-text "hello" offset offset #t)) > > (define (draw-screen canvas dc) > (send dc set-smoothing 'smoothed) > (send dc set-font > (send the-font-list find-or-create-font > 12 'default 'normal 'normal #f 'smoothed #f 'aligned)) > (send dc set-initial-matrix (vector 1 0 0 1 0 0)) > (for ((i 10)) > (draw-text dc (/ i 10.0)) > (send dc translate 50 0))) > > (define frame (new frame% (label "Test draw-text"))) > > (define canvas > (new canvas% > (parent frame) > (min-width 500) > (min-height 100) > (paint-callback draw-screen))) > > (send frame show #t) _________________________ Racket Developers list: http://lists.racket-lang.org/dev