Re: CALayer doesn't resize immediately

FROM : Thomas Schlömer
DATE : Wed Nov 07 11:08:14 2007

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.

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Oldenburg University - Department of Computer Science
Media Informatics and Multimedia-Systems
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