Zooming and panning the project view
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JKatheder commented
Description
As a user I want to navigate the project view by zooming and panning in order to view specific parts of my bisociation graph.
Acceptance
- Zooming is controlled by keyboard (CTRL+/CTRL-) and/or mouse controls (wheel)
- Panning is controlled by keyboard (arrow keys) and/or mouse controls (click and drag)
- There is a maximal and minimal zoom level
- It is possible to automatically center the whole graph in view by the click of a button