timjackleus

public func GetLabelHeight(text:String, font:UIFont, width:CGFloat) -> CGFloat {
    let label:UILabel = UILabel(frame: CGRect(x: 0, y: 0, width: width, height: CGFloat.greatestFiniteMagnitude))
    label.numberOfLines = 0
    label.lineBreakMode = NSLineBreakMode.byWordWrapping
    label.font = font
    label.text = text
    label.sizeToFit()
    
    return label.frame.height
}

timjackleus

import UIKit

public func GetImageSize(url:URL) -> (width: CGFloat, height: CGFloat) {
    var imageWidth:CGFloat = 0
    var imageHeight:CGFloat = 0
    
    if let imageSource = CGImageSourceCreateWithURL(url as CFURL, nil) {
        if let imageProperties = CGImageSourceCopyPropertiesAtIndex(imageSource, 0, nil) as Dictionary? {
            imageWidth = imageProperties[kCGImagePropertyPixelWidth] as! CGFloat
            imageHeight = imageProperties[kCGImagePropertyPixelHeight] as! CGFloat

timjackleus

@mixin fancy-hover($sprite_dir, $off_state, $hover_state, $speed: 0.3s)
  $sprites: sprite-map("#{$sprite_dir}/*.png")
  $width: image-width(sprite_file($sprites, $off_state))
  $height: image-height(sprite_file($sprites, $off_state))
  @include hide-text
  width: $width
  height: $height
  background: sprite($sprites, $off_state) no-repeat
  display: block
  position: relative