option to combine overlapping masks
In projects with moving persons and in some other cases I sometimes need to draw very detailed masks. So I zoom in but than sometimes the area I want to mask doesn't fit inside the display area. This leads to a workflow problem: it's not easy to scroll when I have an "open" mask in the works (in that state I can't get access to the "Zoom" drop down menu or scroll lines but instead mark new mask corners outside of the image).
One idea is to have a modifier key (some applications use the 'space' or 'alt' key for this) that turns the mouse pointer to a "hand" symbol so I can drag the image inside the display area.
The other idea is to create several overlapping masks and combine those later. So one solution would be to have a context menu for a mask if it has overlapping masks for the same image number that have the same mask type (or ask for resulting mask type if those differ):
- combine with mask <list of numbers of other available masks>
- combine with all overlapping masks
An alternative to the former is to select several masks in the list (shift+click or so) and have a context menu with:
- combine selected masks
(also via the usual buttons 'copy', 'export' and selection of a different 'mask type' would be available for several masks at once)