Hi All,
I have a grid of equal sized CALayers in a parent layer - in my case it's a
calendar grid - but it could also be a chess board for example.
After adding all the cell (child) layers to the parent layer I iterate through
them again to add constraints.
The parent layer can have it's width resized. The height is constant.
For all cell layers I added the following constraint:
[cellLayer
addConstraint:[CAConstraintconstraintWithAttribute:kCAConstraintWidth
relativeTo:@"superlayer"
attribute:kCAConstraintWidth
scale:(1/numColumns)
offset:0]];
so that as the parent layer is resized all the child layers are resized as well.
For all layers except those in the right most column I add the following
constraint:
[cellLayer addConstraint:[CAConstraint
constraintWithAttribute:kCAConstraintMaxX
relativeTo:[rightLayer
name]
attribute:kCAConstraintMinX
offset:0]];
so that each layer's right edge is always touching the left edge of the layer
to it's right.
Finally - the layers in the right most column are constrained by:
[cellLayer addConstraint:[CAConstraint
constraintWithAttribute:kCAConstraintMaxX
relativeTo:@"superlayer"
attribute:kCAConstraintMaxX
offset:0]];
so that their right edge always matches the right edge of the parent layer.
My problem is that when the parent layer is resized the animation of the layers
being resized/moved is jerky. The child layers are moved/resized after the
parent layer is finished resizing. Is there a way to make this smoother? I
would love to copy how iCal does it - where the rectangles (which I assume are
CALayers) containing the appointments are smoothly resized as the iCal window
is being resized.
Thanks!
Mazen Abdel-Rahman
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