Re: image transition while dragging
Re: image transition while dragging
- Subject: Re: image transition while dragging
- From: Kai Brüning <email@hidden>
- Date: Thu, 23 Apr 2009 17:45:17 +0200
Hi Rajesh,
as far as I know Cocoa has no provision for this at least up to
Leopard. (If I remember correctly, you could do this easily with
Carbon ;-) )
If you absolutely want this behavior, I can think of two ways to
persuade:
- Return no or an empty image from dragImageForRowsWithIndexes:, track
the mouse yourself and move a temporary window with an image of your
chosing around on the screen. Should be doable, but probably not in a
single afternoon.
- Read about Cocoa hacking and look for some private API IB might be
using for its dragging. Usual caveats apply, like Apple might break
your code with any update etc.
Best success
Kai
On 23.4.2009, at 13:23, rajesh wrote:
Hi All,
I am working on dragging table row (not for re-ordering or deleting)
onto a NSView....
I am returning an processed image (for dragImage) in
- (NSImage *)dragImageForRowsWithIndexes:(NSIndexSet *)dragRows
tableColumns:(NSArray *)tableColumns
event:(NSEvent *)dragEvent offset:
(NSPointPointer)dragImageOffset
{
//
return doctoredImage;
}
I want to change the dragged image with smooth transition to another
image, whenever it reaches its destination(NSView) or when drag
moves out of the source(NSTableView) just like the effect to the
drag image in interface builder tool when items from palette are
dragged out of it.
Any pointers or ideas is appreciated.
Thanks
Rajesh.
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