[ka-Map-users] Scroll wheel zoom

Paul Spencer pspencer at dmsolutions.ca
Tue Apr 18 17:48:32 EDT 2006


I've committed your code (untested even) to cvs.  Lemme know if it is  
working, I don't have time to set up an appropriate test right now :)



On 18-Apr-06, at 1:51 PM, David Badke wrote:

> Paul:
> I started looking at how to do this, and ended up actually doing  
> it. All changes are in kaTool.js. It seems to work...
> The modified kaTool is available at: http://web.uvic.ca/~dbadke/ 
> kaTool.zip.
> The change is in three places: kaTool constructor (set up the  
> default); new function kaTool.setMouseWheel (set the action to  
> perform); function kaTool.onmousewheel (perform the action). The  
> changes are all marked "D Badke".
> The action to be performed is saved in the tool object, so each  
> tool can have different actions. The default is the same action as  
> before (zoom), so it won't break existing code. See the comments  
> for the setMouseWheel function for usage details.
> Let me know what you think.
> David
> Paul Spencer wrote:
>> David,
>> this sounds like a reasonable request ... can you file a bug  
>> (bugzilla.maptools.org) describing how you would like it to work  
>> (i.e. how you would expect it to work if you wanted to call your  
>> own action on scroll)
>> Cheers
>> Paul
>> On 13-Apr-06, at 6:47 PM, David Badke wrote:
>>> It would be nice if there was a way to disable the default scroll  
>>> wheel action (zoom in/out), or better yet, define one's own  
>>> action, without having to modify kaMap.js or kaTool,js. My test  
>>> users objected to the zooming - they kept doing it by accident -  
>>> so I had to disable it, meaning I changed kaMap.js, which I don't  
>>> like to do. My code is a bit crude: :-[
>>> This works, but is not ideal. Anyway, any interest in making the  
>>> scroll wheel action optional and/or configurable?
>>> David
> -- 
> David Badke
> Humanities Computing and Media Center
> University of Victoria, BC, Canada
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> ka-Map-users at lists.maptools.org
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|Paul Spencer                           pspencer at dmsolutions.ca   |
|Applications & Software Development                              |
|DM Solutions Group Inc                 http://www.dmsolutions.ca/|

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