[Feature Request] Zoom and pan with touchpad gestures

[ratijas]

Expected behavior of the wanted feature

Let's make it possible to zoom and pan via multitouch (2 fingers) gestures on a touchpad on desktop platforms.

At least on Linux pinch events from libinput can be used, which I believe is what Firefox doing: GESTURE_PINCH_BEGIN, GESTURE_PINCH_UPDATE and GESTURE_PINCH_END. Other major platforms such as OS X and Windows surely provide their own system API as well.

Use case: watching 4K footage on a FullHD monitor, quickly zooming in to see the details.

Alternative behavior of the wanted feature

No response

Log File

No response

Sample Files

No response

[Akemi]

btw, on macOS this already changes the window size (changes the window scale).

[ratijas]

I must admit, I haven't used OS X in years, and I'm mainly interested in Linux platform (mostly X11, but aren't they all libinput anyways?)