Re: image transition while dragging
Re: image transition while dragging
- Subject: Re: image transition while dragging
- From: rajesh <email@hidden>
- Date: Thu, 23 Apr 2009 18:03:21 +0200
Hi Kai,
application is targeted for 10.5.+ and I assumed it should be easy in
Leopard.
temporary window sums up how the frame change of drag-image is handled
so smooth and neatly.
thanks
Rajesh
On Apr 23, 2009, at 5:45 PM, Kai Brüning wrote:
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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