(Hi this is Andreas - I am sending this from a different email address)
I analyzed the following different selection types. It seems that in
Gimp each tool uses its own way of making selections. Which introduces
subtle inconsistencies. I am not saying they are critical, but this is a
place I started my analysis.
1. The Selection – a set of pixels of the image
Multi-selection: Press Shift or select mult-select icon
The Select menu seems to apply only to this type of section.
Multi-selection: Gimp uses a concept of chaining. Click chain icons to
select more than one layer.
This multi-selection only works for moving, scaling, flipping etc. It
doesn't work for e.g. deleting or duplicating.
3. Layer Groups
When a layer group is selected and the move tool is active: Dragging
moves not the layer group but the layer under the mouse.
4. Alignment tool:
Uses its own selection mode. Multi-select: Press shift. No toggle action.
There are different selection types for paths:
- In the path dialog a path can be selected (grey background). Path on
canvas is shown in red
- or with a blue background through clicking the path in the dialog
- with the path tool active, a path visible on the canvas can be
selected with a left click. Path becomes red and control points become
visible. I guess I am now in path edit mode.
- to select another path, I can Alt-click or select it in the path dialog
So, when the path tool is activated, I can be in or out of edit mode.
(Why are there these two modes?). Once in edit mode I cannot leave it
without de-activating the path tool (?)
6. Path Edit Mode
Multi-selection of control points: Shift click (has toggle action); drag
moves the selection
I am a bit inspired by the original work on GUIs at Xerox PARC and the
later work on Windows and MAC, etc. The idea there was to have a
consistent selection mechanism across all types of objects. Once again,
I don't think these inconsistencies are critical but fixing them could
be a contribution to an overall improvement.
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