Scrolling (with two fingers on the trackpad) in Preview.app (and TeXShop.app) annoyingly blurs PDF text and I would like to disable the over-compensating anti-aliasing. I like the anti-aliasing while not scrolling just fine.
The image below has two Cmd+Shift+3 screenshots from within Preview, the top half with two fingers still on the trackpad after scrolling, the bottom half after releasing them. The boxed snippets were manually enlarged in Photoshop.
I have disabled two-finger zoom and two-finger rotation in System Preferences > Trackpad
, and unchecked "Use LCD font smoothing when available" in System Preferences > General
.
I have also set various defaults
values, to no avail (the values below are just one combination of many I've tried):
for domain in com.apple.CoreGraphics CoreGraphics -g
do
echo $domain
defaults read $domain | egrep -i 'scal|smooth|alias|scroll'
done
> com.apple.CoreGraphics
> CGFontDisableAntialiasing = 1;
> CoreGraphics
> CGFontDisableAntialiasing = 1;
> -g
> AppleAntiAliasingThreshold = 128;
> AppleFontSmoothing = 0;
> AppleScrollAnimationEnabled = 0;
> AppleScrollerPagingBehavior = 1;
> AppleShowScrollBars = Always;
> NSScrollAnimationEnabled = 0;
> "com.apple.mouse.scaling" = "1.5";
> "com.apple.trackpad.scaling" = "-1";
I would like for scrolling to always look like it does if I scroll slowly, and vertically. The ugly anti-aliasing (blurring) is most likely to happen if Preview registers any horizontal scroll (which is rarely intentional), and was more prevalent before I turned off the two-finder scroll.