"Gradient Map" with on-canvas preview and gradient editing
@Jehan
Submitted by Jehan Link to original bug (#791458)
Description
Currently "Gradient Map" directly applies the current gradient to the pixels.
It would be nice to be able to get an intermediary dialog allowing to edit the gradient (similar to the current on-canvas GUI to edit the gradient in Blend tool) and see a gradient mapping preview on-canvas.
I realized the problem when playing with the new file format HGT of elevation data (bug 771661). To map various elevations to colors, I had to edit the current gradient, then run "Gradient Map", then cancel, then tweak the gradient more, then run again, then cancel, and so on. An on-canvas preview and gradient editing would be a very worthwhile update to "Gradient Map".
Version: git master