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Date: Sat, 01 Oct 2011 18:56:39 -0400
From: Dave McGuire <mcguire AT neurotica DOT com>
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To: geda-user AT delorie DOT com
Subject: Re: [geda-user] remapping mouse events in gschem?
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On 10/01/2011 06:25 PM, Peter C.J. Clifton 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.

   This works perfectly, thank you!

> 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?

   If that means "smooth scrolling" rather than "jumping in chunks", yes.

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

   I tried that; I was expecting smaller steps to the scrolling, but it 
didn't seem to have any effect.  I'd dearly love a less "jumpy" 
scrolling action.  But frankly, having two-axis scrolling as above is a 
huge deal in itself!

               -Dave

-- 
Dave McGuire
Port Charlotte, FL