115 lines
3.4 KiB
Swift
Executable File
115 lines
3.4 KiB
Swift
Executable File
//
|
|
// BlockButton.swift
|
|
//
|
|
//
|
|
// Created by Cem Olcay on 12/08/15.
|
|
//
|
|
//
|
|
import UIKit
|
|
|
|
public typealias BlockButtonAction = (sender: BlockButton) -> Void
|
|
|
|
///Make sure you use "[weak self] (sender) in" if you are using the keyword self inside the closure or there might be a memory leak
|
|
public class BlockButton: UIButton {
|
|
// MARK: Propeties
|
|
|
|
public var highlightLayer: CALayer?
|
|
public var action: BlockButtonAction?
|
|
|
|
// MARK: Init
|
|
|
|
public init() {
|
|
super.init(frame: CGRect(x: 0, y: 0, width: 0, height: 0))
|
|
defaultInit()
|
|
}
|
|
|
|
public init(x: CGFloat, y: CGFloat, w: CGFloat, h: CGFloat) {
|
|
super.init(frame: CGRect(x: x, y: y, width: w, height: h))
|
|
defaultInit()
|
|
}
|
|
|
|
public init(x: CGFloat, y: CGFloat, w: CGFloat, h: CGFloat, action: BlockButtonAction?) {
|
|
super.init (frame: CGRect(x: x, y: y, width: w, height: h))
|
|
self.action = action
|
|
defaultInit()
|
|
}
|
|
|
|
public init(action: BlockButtonAction) {
|
|
super.init(frame: CGRect.zero)
|
|
self.action = action
|
|
defaultInit()
|
|
}
|
|
|
|
public override init(frame: CGRect) {
|
|
super.init(frame: frame)
|
|
defaultInit()
|
|
}
|
|
|
|
public init(frame: CGRect, action: BlockButtonAction) {
|
|
super.init(frame: frame)
|
|
self.action = action
|
|
defaultInit()
|
|
}
|
|
|
|
public required init?(coder aDecoder: NSCoder) {
|
|
super.init(coder: aDecoder)
|
|
defaultInit()
|
|
}
|
|
|
|
private func defaultInit() {
|
|
addTarget(self, action: #selector(BlockButton.didPressed(_:)), forControlEvents: UIControlEvents.TouchUpInside)
|
|
addTarget(self, action: #selector(BlockButton.highlight), forControlEvents: [UIControlEvents.TouchDown, UIControlEvents.TouchDragEnter])
|
|
addTarget(self, action: #selector(BlockButton.unhighlight), forControlEvents: [
|
|
UIControlEvents.TouchUpInside,
|
|
UIControlEvents.TouchUpOutside,
|
|
UIControlEvents.TouchCancel,
|
|
UIControlEvents.TouchDragExit
|
|
])
|
|
setTitleColor(UIColor.blackColor(), forState: UIControlState.Normal)
|
|
setTitleColor(UIColor.blueColor(), forState: UIControlState.Selected)
|
|
}
|
|
|
|
public func addAction(action: BlockButtonAction) {
|
|
self.action = action
|
|
}
|
|
|
|
// MARK: Action
|
|
|
|
public func didPressed(sender: BlockButton) {
|
|
action?(sender: sender)
|
|
}
|
|
|
|
// MARK: Highlight
|
|
|
|
public func highlight() {
|
|
if action == nil {
|
|
return
|
|
}
|
|
let highlightLayer = CALayer()
|
|
highlightLayer.frame = layer.bounds
|
|
highlightLayer.backgroundColor = UIColor.blackColor().CGColor
|
|
highlightLayer.opacity = 0.5
|
|
var maskImage: UIImage? = nil
|
|
UIGraphicsBeginImageContextWithOptions(layer.bounds.size, false, 0)
|
|
if let context = UIGraphicsGetCurrentContext() {
|
|
layer.renderInContext(context)
|
|
maskImage = UIGraphicsGetImageFromCurrentImageContext()
|
|
}
|
|
UIGraphicsEndImageContext()
|
|
let maskLayer = CALayer()
|
|
maskLayer.contents = maskImage?.CGImage
|
|
maskLayer.frame = highlightLayer.frame
|
|
highlightLayer.mask = maskLayer
|
|
layer.addSublayer(highlightLayer)
|
|
self.highlightLayer = highlightLayer
|
|
}
|
|
|
|
public func unhighlight() {
|
|
if action == nil {
|
|
return
|
|
}
|
|
highlightLayer?.removeFromSuperlayer()
|
|
highlightLayer = nil
|
|
}
|
|
}
|