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List:       koffice-devel
Subject:    Re: Request for comment: snapping in kivio / flake
From:       Jan Hambrecht <jaham () gmx ! net>
Date:       2009-09-17 8:53:46
Message-ID: 4AB1F91A.80009 () gmx ! net
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Andrew Dorrell wrote:
> On Thursday 17 September 2009 5:34:59 am jaham@gmx.net wrote:
>>> User controls:
>>> ------------------
>>> My first hack at the controls I would expect to see on the docker for
>>>  snapping are:
>>> "snapping mode" check boxes: object; grid; ruler
>> That would make the selection of the kind of snapping more coarse as it is 
>> right now. Some of the snapping strategies are hard to use when activated 
>> together, so i think we should keep the individual selection of snapiing 
>> stratgies.
>>
>>> "snapping strength" slider
>> There is a spinbox for the snapping distance, not sure if a slider is
>>  better  or not. A slider will certainly need more screen space and is not
>>  as accurate as a direct input.
>>
>>> "snap only to visible objects"
>> Do you mean visible as in they are in sight (e.g. in the current viewport)
>>  or  visisble when they have the visible flag set?
> 
> In the current view port.
> 
>>> "Prevent snapping to this object" toggle.
>> You would need to have a property on a shape for that, which does not exist
>>  at  the moment. You probably could use KoShape::setAdditionalAttribute for
>>  that.
> 
> Would it be possible to set that dynamically whenever an object is drawn (so 
> that we could implement the previous point)?
> 
I am not sure there is a reliable way. You can get access to the canvas 
widget, but you would need the current zoom and also the state of the 
scrollbars to know if a shape is outside the view or not. Then a view 
might not use the complete area of the canvas widget for painting the 
document, etc.

> 
> Thanks for your patience with all my replies :-/

No problems, seems easier to respond to particular points.

Ciao Jan
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