darktable-org/darktable — pull request #185 by josefwells (2013-03-01 03:40:55+00:00)
Title: zoom percentage indicator

Added a zoom percentage to the preview in darkroom mode.

Couple things that I wonder about:
-Only shows up when you are zoomed.
-The % is based on the cropped image (if you have a crop), which may not be what people are interested in.