Re: cocoa dragging and constraining coordinates
Re: cocoa dragging and constraining coordinates
- Subject: Re: cocoa dragging and constraining coordinates
- From: Kurt Sutter <email@hidden>
- Date: Tue, 24 May 2011 05:21:36 +0200
On 23. May 2011, at 20:15, Kyle Sluder wrote:
> On Mon, May 23, 2011 at 11:10 AM, Kyle Sluder <email@hidden> wrote:
>> If you want to drag into other applications, you really can't
>> constrict the drag direction. It doesn't make sense.
>
> Hmm, maybe I'm not clear on what you want to do. Are trying to enable
> drag-to-another-app, but also drag within a canvas, and it's only
> within the canvas that you want to enable the
> shift-to-constrain-direction behavior?
Exactly
>
> While most apps don't behave this way, if you wanted to do that you
> could do it in your dragging *destination*.
How? Is there any way to constrain the coordinates of the image passed to
dragImage:at:offset:event:pasteboard:source:slideBack from the drag destination?
>
> But the big question is how to you discern between a within-app drag
> that extends beyond the visible bounds of your window, versus an
> attempt to drag outside the app? There really isn't any API for
> telling the drag manager to start or stop allowing inter-application
> drags while in the middle of a drag operation.
>
>
My drag destination can distinguish where the drag comes from. If it is an
in-applicaiton drag (in fact, an in-document drag), it could constrain the
coordinates of the image (if I knew how)
k
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