Re: NSButtonCell subclass (partially transparent images)
Re: NSButtonCell subclass (partially transparent images)
- Subject: Re: NSButtonCell subclass (partially transparent images)
- From: Donald Brown <email@hidden>
- Date: Fri, 08 Feb 2002 20:38:30 -0600
I have a circular button with a little lock in it, instead of the word
"unlock". [self image] holds the picture of the lock, it does not hold the
circular bubble. (I change the image between a closed lock and open lock.)
Your code would copy my lock, but not the bubble around it.
Donald
on 2/8/02 8:23 PM, Darrin Filer at email@hidden wrote:
>
The button/buttonCell's image has been set. This can be verified from
>
the debugger or by simply commenting out the overridden functions. In
>
which case it renders normally since the subclass isn't overriding any
>
of NSButtonCell's methods.
>
>
The following code should draw the cell's image into its control's view,
>
right? Break points are reached in this function from which I've
>
verified that cellFrame, controlView, and [self image] are all
>
reasonable values... baffling
>
>
- (void)drawInteriorWithFrame:(NSRect)cellFrame inView:(NSView
>
*)controlView {
>
[controlView lockFocus];
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[[self image] compositeToPoint:cellFrame.origin
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operation:NSCompositeCopy];
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[controlView unlockFocus];
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[controlView setNeedsDisplay:YES];
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}
>
>
Assuming that [self image] is properly loaded, why would this code not
>
draw anything?
>
>
darrin filer
>
>
On Friday, February 8, 2002, at 04:59 PM, Erik M. Buck wrote:
>
>
> The image that you get via [self image] is not the image of the button
>
> itself. It is the optional image that is displayed instead of or along
>
> with
>
> a title. If there is no image associated with a button then your code
>
> will
>
> not draw anything.
>
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--
Donald Brown
email@hidden
http://www.eamontales.com
We have met the enemy and he is us - Pogo
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