Adding a pinch gesture for zooming in and out with magic trackpads or trackpads in general

[bluesialie]

Hi! There are a few people asking how to use the magic trackpad features of Zooming in or out with a "pinch" gesture and it would be a really useful feature to add

for eg: https://superuser.com/questions/1705684/does-the-apple-magic-trackpad-2-work-on-linux and also
https://askubuntu.com/questions/1474294/touchpad-pinch-zoom-not-functional-in-ubuntu-22-04

I already installed xinput-gui and while i was trying to change some parameters, I believe I didn't find which one activates or deactivates this feature.

Hoping it's a clear description,
Thnks!

[tec655]

It seems like your message is referring to a specific context or conversation, and the reference to "Adding a pinch gesture for zooming in and out with magic trackpads or trackpads in general #13" may be part of a larger discussion. If you're looking for information or guidance on adding pinch gestures for zoom magic on trackpads, especially with Magic Trackpads, you might be interested in incorporating this feature into software or applications.

[jerr045]

In your macOS application, use gesture recognizers to detect pinch gestures. Cocoa provides gesture recognizers that you can use in your code.
Implement Zoom Logic:

Once a pinch gesture is detected, implement the logic for zooming in and out. This would involve changing the scale or zoom factor of the content being displayed.
Update UI:

As the user performs the pinch gesture, update the user interface to reflect the changes in zoom level. This might involve redrawing or updating the displayed content.