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Date:	01 Oct 2011 23:25:30 +0100
From:	"Peter C.J. Clifton" <pcjc2 AT cam DOT ac DOT uk>
To:	geda-user AT delorie DOT com
Subject:	Re: [geda-user] remapping mouse events in gschem?
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On Oct 1 2011, Dave McGuire wrote:

>
>   Hey folks.  Is there a way to remap mouse events in gschem?  I am 
>using a gesture-capable trackpad (an Apple desktop trackpad under Linux) 
>and I'd like to use two-finger scrolling to pan the schematic sheet in X 
>and Y.  It already works for X, but moving in the Y dimension performs 
>the zoom in/zoom out function that is standard (and wonderful) for 
>scroll wheels on mice.  With the trackpad, though, I constantly find 
>myself wanting to pan in both axes with two fingers.
>
>   If this is configurable in some way, can someone point me in the 
>right direction?

Yes - I do this out of preference anyway - IMO, the mouse _scroll_ wheels / 
touch areas should scroll the viewport, never zoom it.

What I do is put in my ~/.gEDA/gschemrc:

(scroll-wheel "gtk")

as opposed to the default (scroll-wheel "classic")

This makes zoom a Ctrl modified vertical scroll, and the unmodified scroll 
actions just move the viewport.

You might even be able to set the gains to negateive of their normal 
numbers to enable a kind of "natural scrolling" feature - I believe that is 
common on Mac?

Try (scrollpan-steps -8) if you want that, the code comments seem to 
suggest this is possible.

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