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: Mon, 23 May 2011 20:04:53 +0200
If I understand your proposal correctly, you propose not to use cocoa dragging. However, please correct me if I am wrong, but I think this would make it impossible to drag the objects to other applications, such as Keynote. This would make our users unhappy (the objects have a pdf representation that some users want to drag into Keynote)
Kurt
On 23. May 2011, at 17:48, Kyle Sluder wrote:
> On Mon, May 23, 2011 at 8:28 AM, Kurt Sutter <email@hidden> wrote:
>> My view implements dragging of the objects it displays. The user should be able to constrain the coordinates of the drag to purely horizontal/vertical by holding down the shift key, i.e. the position of the image passed to dragImage:at:offset:event:pasteboard:source:slideBack should be constrained to a purely horizontal/vertical offset when the users holds the shift key down. I have checked out the NSDraggingDestination protocol but found nothing helpful.
>
> Are you trying to do something similar to what NSTableView does when
> dragging NSTableColumns? If so, forget about using NSDraggingSource
> and just implement it directly in your mouse tracking loop.
>
> --Kyle Sluder
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