calayer - w3toppers.com

UIView with rounded corners and drop shadow?

Swift // corner radius blueView.layer.cornerRadius = 10 // border blueView.layer.borderWidth = 1.0 blueView.layer.borderColor = UIColor.black.cgColor // shadow blueView.layer.shadowColor = UIColor.black.cgColor blueView.layer.shadowOffset = CGSize(width: 3, height: 3) blueView.layer.shadowOpacity = 0.7 blueView.layer.shadowRadius = 4.0 Exploring the options Problem 1: Shadow gets clipped off What if there are sublayers or subviews (like an image) whose content we want … Read more

How do I adjust the anchor point of a CALayer, when Auto Layout is being used?

[EDIT: Warning: The entire ensuing discussion will be possibly outmoded or at least heavily mitigated by iOS 8, which may no longer make the mistake of triggering layout at the time that a view transform is applied.] Autolayout vs. View Transforms Autolayout does not play at all well with view transforms. The reason, as far … Read more

Fast and Lean PDF Viewer for iPhone / iPad / iOS – tips and hints?

I have build such kind of application using approximatively the same approach except : I cache the generated image on the disk and always generate two to three images in advance in a separate thread. I don’t overlay with a UIImage but instead draw the image in the layer when zooming is 1. Those tiles … Read more

How do I apply a perspective transform to a UIView?

As Ben said, you’ll need to work with the UIView’s layer, using a CATransform3D to perform the layer’s rotation. The trick to get perspective working, as described here, is to directly access one of the matrix cells of the CATransform3D (m34). Matrix math has never been my thing, so I can’t explain exactly why this … Read more