我想将NSImage的大小从512px调整为60px,我只找到了iOS的代码,但没有找到OSX的代码。
答案 0 :(得分:6)
我在GitHub上找到了一个函数,它对我来说很好。
func resize(image: NSImage, w: Int, h: Int) -> NSImage {
var destSize = NSMakeSize(CGFloat(w), CGFloat(h))
var newImage = NSImage(size: destSize)
newImage.lockFocus()
image.drawInRect(NSMakeRect(0, 0, destSize.width, destSize.height), fromRect: NSMakeRect(0, 0, image.size.width, image.size.height), operation: NSCompositingOperation.CompositeSourceOver, fraction: CGFloat(1))
newImage.unlockFocus()
newImage.size = destSize
return NSImage(data: newImage.TIFFRepresentation!)!
}