Issue #8458: Show Soft-Proofing Menu when right-clicking statusbar toggle
This patch attempts to resolve issue #1122 (closed) via the soft-proofing pop-over proposed in #8458 (closed). Users can right-click the soft-proofing toggle to see the following menu:
Revised Version
An example of the menu in-action can be seen here: https://www.youtube.com/watch?v=z33hl4bK2X8
The menu can be shown even if the toggle button is currently disabled due to no soft-proofing profile being set. This is because the original toggle is now a child of a GtkEventBox which handles the right-click event.
Feedback on the design and interaction (as well as the code structure and other issues) is appreciated!
Edited by Alx Sa