Pinch-to-Zoom on regular desktop computer

[noname]

i have some question to developers(and maybe by this way we, users - can get this features in firefox):
Why is Pinch-to-Zoom on touch pad is SO DIFERENT in compare with ctrl + mouse whell up\down? After some time spenden only on laptop, I would like to have "same thing" on desktop PC - but there is no touchpad and if i try to get same thing by ctrl + mouse whell up\down - it is no same! at all.

(I understand that this Pinch-to-Zoom function is hardcoded somewhere within the touchpad driver libraries or the system's own libraries for how it works with the touchpad. And, most likely, this function can't be directly exposed to the mouse interface via the API. But is it really that difficult to write a wrapper for this function around the library that would function within the browser itself? So, in the browser itself, it would be possible to choose whether to use the standard scroll wheel(ctrl + mouse whell up\down) or use the scroll wheel like Pinch-to-Zoom on a laptop touchpad. I understand that this is some kind of system library, either in the Windows or Linux operating system itself, or in the touchpad driver. But is it really that difficult to implement a wrapper for this system function within the browser? )

[Jon]

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[f4nAtiC]

There is a build in setting for exactly what you want. 
type the following in the URL and enter: about:config
search this: mousewheel.with_control.action and change the number to 5. 
You can find more about this on other threads.