UIImage size in UIImageView

Question

I have some UIImage and display it in UIImageView.

I need to use UIViewContentModeScaleAspectFit content mode.

Here i

Answer 1

In swift, same as @jacob-relkin

extension UIImageView {

    func displayedImageBounds() -> CGRect {

        let boundsWidth = bounds.size.width
        let boundsHeight = bounds.size.height
        let imageSize = image!.size
        let imageRatio = imageSize.width / imageSize.height
        let viewRatio = boundsWidth / boundsHeight
        if ( viewRatio > imageRatio ) {
            let scale = boundsHeight / imageSize.height
            let width = scale * imageSize.width
            let topLeftX = (boundsWidth - width) * 0.5
            return CGRectMake(topLeftX, 0, width, boundsHeight)
        }
        let scale = boundsWidth / imageSize.width
        let height = scale * imageSize.height
        let topLeftY = (boundsHeight - height) * 0.5
        return CGRectMake(0,topLeftY, boundsWidth,height)
    }
}