Upstream

[taj-ny]

Some things that need to be done before this is even considered:

• simplify code, improve documentation #56
• Add CallbackGestureAction - required for 1-to-1 gestures
• Rename Condition class to WindowCondition (or something else), create Condition class that WindowCondition derives from, containing only a virtual bool isSatisfied() const method, add CallbackCondition - required for some more complex 1-to-1 gestures, like overview
• Built-in actions - Hard-coded lists of actions (including CallbackGestureActions for 1-to-1 gestures with animations, which need to be written in C++) that can be easily assigned to gestures
• Implement a simple 1-1 gesture like window maximization

https://invent.kde.org/plasma/kwin/-/issues/59