1641300 - Firefox pinch-zooming is too sensitive on macOS (with apz.allow_zooming=true Firefox starts zooming almost-immediately on pinch on macOS)

Status: RESOLVED FIXED

(Core :: Panning and Zooming, defect, P3)

Description

[Jeff Muizelaar [:jrmuizel]]

This behaviour makes Firefox prone to accidental zoom. Safari and Chrome both have a threshold (i.e you have to move through the gesture a little ways) before the behaviour starts happening.

Comment 1

[Kartikaya Gupta (email:[e-mail])]

FWIW I haven't ever accidentally triggered zooming on my mac. There is a bit of a gesture you need to get through before it engages and it feels fine to me.

Comment 2

[Botond Ballo [:botond]]

On touchscreens, where we do our own gesture detection, we have a threshold that needs to be passed.

On Mac touchpads, however, I think the gesture detection is done in the OS, so I'm not sure what degree of control we have over it.

Comment 3

[Timothy Nikkel (:tnikkel)]

In my testing it seems like Safari and Firefox have about the same amount of "delay" before reacting to a pinch, and Chrome has a larger "delay" then Safari and Firefox.

Comment 4

[Jeff Muizelaar [:jrmuizel]]

Indeed. I also see a similar delay in Firefox and Safari. It seemed like less when I reported this. That being said I seem to trigger accidental zoom a fair amount in Firefox (once a day?)

Comment 5

[Kris Taeleman (:ktaeleman)]

@jeff: do you still feel this is the case?

Comment 6

[Jeff Muizelaar [:jrmuizel]]

It hasn't bothered me lately.