Can we zoom by ctrl+two finger

[Freed-Wu]

I test and found:

In the background outside of pdf, we can use two finger to zoom in/out pdf
In the pdf, we can use two finger to select some characters
In the pdf, we can use shift+two finger to select some square region.

However, when we zoom the pdf to make the pdf fullscreen, we cannot zoom in/out pdf. Can we add a new shortcut such as ctrl+two fingers to zoom in/out in the pdf?