Re: Leopard problem: rotating buttons
Re: Leopard problem: rotating buttons
- Subject: Re: Leopard problem: rotating buttons
- From: Daniel Griscom <email@hidden>
- Date: Sun, 4 Nov 2007 10:49:41 -0500
At 9:51 AM -0500 11/4/07, Raffael Cavallaro wrote:
On Nov 4, 2007, at 7:55 AM, Bill Dudney wrote:
I went ahead and built a really simple app that has 2 buttons, one
is layer backed (labeled beeper) the other is not (labeled
rotate).
When you hit rotate the beeper button rotates an additional 15
degrees from where it is, when you hit beeper it beeps.
The UI is ugly but its not mean to be an example of nice UI :)
http://bill.dudney.net/roller/objc/resource/LayerBackedControls.zip
Is the url to grab the project.
It was very kind of you, Bill, to whip up that demo, but...
I don't know if anyone else is seeing this, but there's a bug in how
the rotated button is drawn whenever its angle is some multiple of
90 degrees:
Bingo!!
270: text normal, button is a combination of the two above -
orientation is off by 90 degrees (i.e., it's horizontal when it
should be vertical, and its extent is only as wide as the button is
tall. No rounded corners, just top and bottom borders.
I'm rotating by -90 degrees, but not surprisingly see the same thing.
all other angles are correct, and this pattern repeats as you cycle.
This observation led to a successful workaround: instead of setting
the rotation to -90, set it to -89.999995 (the closest value to -90
that still dodges the bug). The results:
- Everything looks fine under Tiger
- Everything looks fine under Leopard, EXCEPT that the text within
the default button is blurry when not clicked. Very strange, but
tolerable when compared to the alternatives.
Raffael: have you reported this bug? If not, I will.
I'm going to burn a tech support incident to see if there's a better
workaround. I'll let you all know what I find out.
Thanks for the help,
Dan
--
Daniel T. Griscom email@hidden
Suitable Systems http://www.suitable.com/
1 Centre Street, Suite 204 (781) 665-0053
Wakefield, MA 01880-2400
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