disable Super+MiddleClick by default

[Joe Zimmerman]

Binary package hint: compiz

Using Ubuntu 9.10, compiz 0.8.4.

What happened: I inadvertently pressed Super+MiddleClick, triggering an extreme compiz zoom-in. There was no indication of how to zoom out. I had to log out (i.e. restart X) to make the system usable again (only later did I discover that Super+ScrollWheel was the right thing). If I were less familiar with computers, I suspect I would have been quite alarmed.

What I expected to happen: either (1) Super+MiddleClick and Super+ScrollWheel disabled by default, and enabled by (e.g.) a preference pane; (2) some sort of overlay displayed for a few seconds upon zoom, giving a brief, memorable, and intuitive key combination to restore any zoomed state to normal immediately; or (3) both.

Related discussion at http://lists.ubuntu.com/archives/ubuntu-devel-discuss/2009-October/009743.html .

[Travis Watkins (amaranth)]

I agree that Super+MiddleClick should be disabled since there is no intuitive way to figure out how to get out of that but Super+ScrollWheel should stay enabled because you know it zoomed in when you scrolled up so it should be obvious scrolling down will zoom out. For what it's worth, OS X has Ctrl+ScrollWheel for zoom enabled by default too.

[MiiJaySung (jason-hybd)]

Agreed, this totally annoys the hell out of me. I do this by accident regularly on my laptop when intending to do Alt + Middle mouse and drag to resize, because the the keyboard layout / spacing is physically a little different from a typical keyboard.

[Ben (ben-bdlow)]

In some cases the zoom "feature" is not reversible: if you have a non-scroll-wheel mouse, or a laptop with three mouse buttons, you can zoom in but you can't zoom out without a) realising what you've just done, and 2) finding and attaching a scroll-wheel mouse. For example, if you're using a thinkpad which has 3 mouse buttons beneath the space bar, sans external mouse, and press Super+MiddleClick, you're screwed.

In case anyone else finds this: the only way I found of "fixing this" was to install Compiz Config Settings Manager, and disabling the Zoom plugin.

[Didier Roche-Tolomelli (didrocks)]

This is done in natty.