here are some ideas that came to my mind while working with PhF:
- The unused blue area seems to be there because of the buttons in the red box. Could this unused space be eliminated by either shifting those buttons to the left bottom below the image?
Or by setting theses functions into a menu?
- The unused green area seems to be there bacause of the tab-rider. Can it be made thus that the rider only appears when multiple images are opened?
This could add some space to the left tools side and to the image (especally if the images are in portrait mode).
Just some thoughts…