Re: Qt graphics zooming

[Ben Abbott]

> On Mar 3, 2015, at 1:55 PM, John W. Eaton <address@hidden> wrote:
> 
> On 03/03/2015 01:28 PM, Rik wrote:
> 
>> This works well when using single mouse clicks.  I would add the same
>> code to the canvasWheelEvent so that mouse wheel zoom is also based on
>> the current location.
>> 
>> -- Canvas.cc:795 --
>> // FIXME: should we zoom about point for 2D plots?
>> 
>> ap.zoom (mode, factor);
>> -- End Code --
>> 
>> It looks like that may have been intended.
> 
> I'm not sure that's how Matlab works.  Maybe someone else can verify?
> 
> I don't really care one way or the other, but if we diverge from what Matlab 
> does, I expect we'll get a bug report about it...
> 
> jwe

I happy to try on Matlab, but I'm not following what needs to be done.

To illustrate where I'm lost .... If the mouse clicking the a zoom button why 
would the zoom be based upon the location of the mouse?

If a hot key is being used to zoom, I don't think Matlab supports that.

Ben