Re: NSView and array of moveable NSImages
Re: NSView and array of moveable NSImages
- Subject: Re: NSView and array of moveable NSImages
- From: Michael Watson <email@hidden>
- Date: Thu, 5 Apr 2007 16:13:20 -0400
Actually, your index-0 layer will be on the bottom. This ends up
being more efficient when adding new image layers, especially if you
add them near or at the top of the stack. When you perform your
recompositing, you can just walk the array from 0 to N and things
automagically draw in order. (Recompositing dirty rects only, of
course.)
--
m-s
On 05 Apr, 2007, at 16:01, I. Savant wrote:
On 4/5/07, Scott Anguish <email@hidden> wrote:
There isn't much extensive to it. You simply start at the closest
rectangle and test the bounds against the mouse location. First hit
is the one that you drag.
So you're saying the z-order should be managed by the image's
position in the array (index zero being the topmost image)? If so,
that's even better than maintaining a "z-order" property. :-) Just
move the images around in the array to change the z-order.
(sigh) No matter how efficient you think you've made something,
someone always comes along and points out a way you can make it even
more so. :-}
--
I.S.
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