Re: CALayer doesn't resize immediately
Re: CALayer doesn't resize immediately
- Subject: Re: CALayer doesn't resize immediately
- From: Axel Péju <email@hidden>
- Date: Wed, 7 Nov 2007 21:52:18 +0100
Hi again,
Using autoresizingMaks works far better. But after some hours of work,
I came with the conclusion that CAConstraintLayoutManager performances
are not what I expect them to be. Even with the Core Animation
provided - CovertFlow - example, I clearly see the layers translate
when I resize the view.
The problem is that I really need to use CAConstrainLayoutManagers,as
my application does more than the project I included in the first mail.
Maybe some of you could confirm this issue, it might be a PPC-only
issue. I hope there is a fix in 10.5.1 if this is a bug...
Axel
Le 7 nov. 07 à 11:08, Thomas Schlömer a écrit :
Hi,
my first guess:
Instead of configuring the constraints like this
[sublayer addConstraint:[CAConstraint
constraintWithAttribute:kCAConstraintMinX
relativeTo:@"superlayer"
attribute:kCAConstraintMinX]];
[sublayer addConstraint:[CAConstraint
constraintWithAttribute:kCAConstraintWidth
relativeTo:@"superlayer"
attribute:kCAConstraintWidth]];
[sublayer addConstraint:[CAConstraint
constraintWithAttribute:kCAConstraintMidY
relativeTo:@"superlayer"
attribute:kCAConstraintMidY]];
[sublayer addConstraint:[CAConstraint
constraintWithAttribute:kCAConstraintHeight
relativeTo:@"superlayer"
attribute:kCAConstraintHeight]];
it should be sufficient to write
[sublayer addConstraint:[CAConstraint
constraintWithAttribute:kCAConstraintWidth
relativeTo:@"superlayer"
attribute:kCAConstraintWidth]];
[sublayer addConstraint:[CAConstraint
constraintWithAttribute:kCAConstraintHeight
relativeTo:@"superlayer"
attribute:kCAConstraintHeight]];}
, i.e., just constraining the width and height in relation to the
superlayer.
However, a more elegant solution should be to simply write:
sublayer.autoresizingMask = kCALayerWidthSizable |
kCALayerHeightSizable;
sublayer.layoutManager = [CAConstraintLayoutManager layoutManager];
All this without actually testing it.
Thomas S.
--
Oldenburg University - Department of Computer Science
Media Informatics and Multimedia-Systems
Phone: +49 441 9722-175 - Fax: +49 441 9722-102
Escherweg 2 - D-26121 Oldenburg
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