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//
// ViewController.swift
// Filterer
//
// Created by Jack on 2015-09-22.
// Copyright © 2015 UofT. All rights reserved.
//
import UIKit
class ViewController: UIViewController, UIImagePickerControllerDelegate, UINavigationControllerDelegate {
var filteredImage: UIImage?
let image = UIImage(named: "scenery")!
var filterType: String = ""
@IBOutlet weak var originalText: UILabel!
@IBOutlet var imageView: UIImageView!
@IBOutlet var sliderMenu: UIView!
@IBOutlet weak var slideIt: UISlider!
@IBOutlet weak var editButton: UIButton!
@IBOutlet var secondaryMenu: UIView!
@IBOutlet var bottomMenu: UIView!
@IBOutlet weak var compareButton: UIButton!
@IBOutlet var filterButton: UIButton!
//this function applies red filter
@IBAction func redIt(_ sender: AnyObject) {
var rgbaImage = RGBAImage(image: image)!
let avgRed = 107
filterType = "red"
for y in 0..<rgbaImage.height{
for x in 0..<rgbaImage.width{
let index = y * rgbaImage.width + x
var pixel = rgbaImage.pixels[index]
let redDelta = Int(pixel.red) - avgRed
var modifier = 1 + 4 * (Double(y) / Double(rgbaImage.height))
if (Int(pixel.red) < avgRed){
modifier = 1
}
pixel.red = UInt8(max(min(255, Int(round(Double(avgRed) + modifier * Double(redDelta)))), 0))
rgbaImage.pixels[index] = pixel
}
}
filteredImage = rgbaImage.toUIImage()
crossFadeToImage(image)
compareButton.isEnabled = true
editButton.isEnabled = true
}
@IBAction func greenIt(_ sender: AnyObject) {
var rgbaImage = RGBAImage(image: image)!
let avgGreen = 107
filterType = "green"
for y in 0..<rgbaImage.height{
for x in 0..<rgbaImage.width{
let index = y * rgbaImage.width + x
var pixel = rgbaImage.pixels[index]
let greenDelta = Int(pixel.green) - avgGreen
var modifier = 1 + 4 * (Double(y) / Double(rgbaImage.height))
if (Int(pixel.green) < avgGreen){
modifier = 1
}
pixel.green = UInt8(max(min(255, Int(round(Double(avgGreen) + modifier * Double(greenDelta)))), 0))
rgbaImage.pixels[index] = pixel
}
}
filteredImage = rgbaImage.toUIImage()
crossFadeToImage(image)
compareButton.isEnabled = true
editButton.isEnabled = true
}
@IBAction func blueIt(_ sender: AnyObject) {
var rgbaImage = RGBAImage(image: image)!
let avgBlue = 50
filterType = "blue"
for y in 0..<rgbaImage.height{
for x in 0..<rgbaImage.width{
let index = y * rgbaImage.width + x
var pixel = rgbaImage.pixels[index]
let blueDelta = Int(pixel.blue) - avgBlue
var modifier = 1 + 4 * (Double(y) / Double(rgbaImage.height))
if (Int(pixel.blue) < avgBlue){
modifier = 1
}
pixel.blue = UInt8(max(min(255, Int(round(Double(avgBlue) + modifier * Double(blueDelta)))), 0))
rgbaImage.pixels[index] = pixel
}
}
filteredImage = rgbaImage.toUIImage()
crossFadeToImage(image)
compareButton.isEnabled = true
editButton.isEnabled = true
}
@IBAction func yellowIt(_ sender: AnyObject) {
var rgbaImage = RGBAImage(image: image)!
let avgYellow = 107
filterType = "yellow"
for y in 0..<rgbaImage.height{
for x in 0..<rgbaImage.width{
let index = y * rgbaImage.width + x
var pixel = rgbaImage.pixels[index]
let yellowDelta = Int(pixel.yellow) - avgYellow
var modifier = 1 + 4 * (Double(y) / Double(rgbaImage.height))
if (Int(pixel.yellow) < avgYellow){
modifier = 1
}
pixel.yellow = UInt8(max(min(255, Int(round(Double(avgYellow) + modifier * Double(yellowDelta)))), 0))
rgbaImage.pixels[index] = pixel
}
}
filteredImage = rgbaImage.toUIImage()
crossFadeToImage(image)
compareButton.isEnabled = true
editButton.isEnabled = true
}
@IBAction func purpleIt(_ sender: AnyObject) {
var rgbaImage = RGBAImage(image: image)!
let avgPurple = 107
filterType = "purple"
for y in 0..<rgbaImage.height{
for x in 0..<rgbaImage.width{
let index = y * rgbaImage.width + x
var pixel = rgbaImage.pixels[index]
let purpleDelta = Int(pixel.red) - avgPurple
var modifier = 1 + 4 * (Double(y) / Double(rgbaImage.height))
if (Int(pixel.purple) < avgPurple){
modifier = 1
}
pixel.purple = UInt8(max(min(255, Int(round(Double(avgPurple) + modifier * Double(purpleDelta)))), 0))
rgbaImage.pixels[index] = pixel
}
}
filteredImage = rgbaImage.toUIImage()
crossFadeToImage(image)
compareButton.isEnabled = true
editButton.isEnabled = true
}
func crossFadeToImage(_ image: UIImage) {
// crossfade to this image
UIView.transition(with: imageView,
duration:1,
options: UIViewAnimationOptions.transitionCrossDissolve,
animations: { self.imageView.image = self.filteredImage},
completion: nil)
}
@IBAction func compareIt(_ sender: AnyObject) {
if imageView.image == filteredImage {
imageView.image = image
originalText.text = "Original"
compareButton.isSelected = false
}else{
imageView.image = filteredImage
originalText.text = ""
compareButton.isSelected = true
}
}
@IBAction func editIt(_ sender: AnyObject) {
}
@IBAction func intensityIt(_ sender: AnyObject) {
let intensity = self.slideIt.value * 100
print(intensity)
switch filterType{
case "red":
var rgbaImage = RGBAImage(image: image)!
let avgRed = Int(intensity)
for y in 0..<rgbaImage.height{
for x in 0..<rgbaImage.width{
let index = y * rgbaImage.width + x
var pixel = rgbaImage.pixels[index]
let redDelta = Int(pixel.red) - avgRed
var modifier = 1 + 4 * (Double(y) / Double(rgbaImage.height))
if (Int(pixel.red) < avgRed){
modifier = 1
}
pixel.red = UInt8(max(min(255, Int(round(Double(avgRed) + modifier * Double(redDelta)))), 0))
rgbaImage.pixels[index] = pixel
}
}
filteredImage = rgbaImage.toUIImage()
crossFadeToImage(image)
case "blue":
var rgbaImage = RGBAImage(image: image)!
let avgBlue = Int(intensity)
for y in 0..<rgbaImage.height{
for x in 0..<rgbaImage.width{
let index = y * rgbaImage.width + x
var pixel = rgbaImage.pixels[index]
let blueDelta = Int(pixel.blue) - avgBlue
var modifier = 1 + 4 * (Double(y) / Double(rgbaImage.height))
if (Int(pixel.blue) < avgBlue){
modifier = 1
}
pixel.blue = UInt8(max(min(255, Int(round(Double(avgBlue) + modifier * Double(blueDelta)))), 0))
rgbaImage.pixels[index] = pixel
}
}
filteredImage = rgbaImage.toUIImage()
crossFadeToImage(image)
case "yellow":
var rgbaImage = RGBAImage(image: image)!
let avgYellow = Int(intensity)
filterType = "yellow"
for y in 0..<rgbaImage.height{
for x in 0..<rgbaImage.width{
let index = y * rgbaImage.width + x
var pixel = rgbaImage.pixels[index]
let yellowDelta = Int(pixel.yellow) - avgYellow
var modifier = 1 + 4 * (Double(y) / Double(rgbaImage.height))
if (Int(pixel.yellow) < avgYellow){
modifier = 1
}
pixel.yellow = UInt8(max(min(255, Int(round(Double(avgYellow) + modifier * Double(yellowDelta)))), 0))
rgbaImage.pixels[index] = pixel
}
}
filteredImage = rgbaImage.toUIImage()
crossFadeToImage(image)
case "green":
var rgbaImage = RGBAImage(image: image)!
let avgGreen = Int(intensity)
filterType = "green"
for y in 0..<rgbaImage.height{
for x in 0..<rgbaImage.width{
let index = y * rgbaImage.width + x
var pixel = rgbaImage.pixels[index]
let greenDelta = Int(pixel.green) - avgGreen
var modifier = 1 + 4 * (Double(y) / Double(rgbaImage.height))
if (Int(pixel.green) < avgGreen){
modifier = 1
}
pixel.green = UInt8(max(min(255, Int(round(Double(avgGreen) + modifier * Double(greenDelta)))), 0))
rgbaImage.pixels[index] = pixel
}
}
filteredImage = rgbaImage.toUIImage()
crossFadeToImage(image)
default:
print("good")
}
}
override func viewDidLoad() {
editButton.isEnabled = false
compareButton.isEnabled = false
super.viewDidLoad()
secondaryMenu.backgroundColor = UIColor.white.withAlphaComponent(0.5)
secondaryMenu.translatesAutoresizingMaskIntoConstraints = false
let tap = UILongPressGestureRecognizer(target: self, action: #selector(ViewController.pressedMe(_:)))
tap.minimumPressDuration = 0
self.imageView.addGestureRecognizer(tap)
self.imageView.isUserInteractionEnabled = true
}
//this function shows original image on tap
func pressedMe(_ gesture: UITapGestureRecognizer) {
if filteredImage != nil {
if gesture.state == .began{
originalText.text = "Original"
imageView.image = image
} else if gesture.state == .ended {
originalText.text = ""
imageView.image = filteredImage
}
}
}
// MARK: Share
@IBAction func onShare(_ sender: AnyObject) {
let activityController = UIActivityViewController(activityItems: ["Check out our really cool app", imageView.image!], applicationActivities: nil)
present(activityController, animated: true, completion: nil)
}
// MARK: New Photo
@IBAction func onNewPhoto(_ sender: AnyObject) {
let actionSheet = UIAlertController(title: "New Photo", message: nil, preferredStyle: .actionSheet)
actionSheet.addAction(UIAlertAction(title: "Camera", style: .default, handler: { action in
self.showCamera()
}))
actionSheet.addAction(UIAlertAction(title: "Album", style: .default, handler: { action in
self.showAlbum()
}))
actionSheet.addAction(UIAlertAction(title: "Cancel", style: .cancel, handler: nil))
self.present(actionSheet, animated: true, completion: nil)
}
func showCamera() {
let cameraPicker = UIImagePickerController()
cameraPicker.delegate = self
cameraPicker.sourceType = .camera
present(cameraPicker, animated: true, completion: nil)
}
func showAlbum() {
let cameraPicker = UIImagePickerController()
cameraPicker.delegate = self
cameraPicker.sourceType = .photoLibrary
present(cameraPicker, animated: true, completion: nil)
}
// MARK: UIImagePickerControllerDelegate
func imagePickerController(_ picker: UIImagePickerController, didFinishPickingMediaWithInfo info: [String : Any]) {
dismiss(animated: true, completion: nil)
if let image = info[UIImagePickerControllerOriginalImage] as? UIImage {
imageView.image = image
}
}
func imagePickerControllerDidCancel(_ picker: UIImagePickerController) {
dismiss(animated: true, completion: nil)
}
// MARK: Filter Menu
@IBAction func onFilter(_ sender: UIButton) {
if (sender.isSelected) {
hideSecondaryMenu()
sender.isSelected = false
} else {
showSecondaryMenu()
sender.isSelected = true
}
}
@IBAction func editShow(_ sender: UIButton) {
if ((sender.isSelected)) {
hideSlider()
sender.isSelected = false
filterButton.isEnabled = true
} else {
showSlider()
sender.isSelected = true
filterButton.isEnabled = false
}
}
func showSecondaryMenu() {
view.addSubview(secondaryMenu)
let bottomConstraint = secondaryMenu.bottomAnchor.constraint(equalTo: bottomMenu.topAnchor)
let leftConstraint = secondaryMenu.leftAnchor.constraint(equalTo: view.leftAnchor)
let rightConstraint = secondaryMenu.rightAnchor.constraint(equalTo: view.rightAnchor)
let heightConstraint = secondaryMenu.heightAnchor.constraint(equalToConstant: 44)
NSLayoutConstraint.activate([bottomConstraint, leftConstraint, rightConstraint, heightConstraint])
view.layoutIfNeeded()
self.secondaryMenu.alpha = 0
UIView.animate(withDuration: 0.4, animations: {
self.secondaryMenu.alpha = 1.0
})
}
func hideSecondaryMenu() {
UIView.animate(withDuration: 0.4, animations: {
self.secondaryMenu.alpha = 0
}, completion: { completed in
if completed == true {
self.secondaryMenu.removeFromSuperview()
}
})
}
func showSlider() {
view.addSubview(sliderMenu)
sliderMenu.translatesAutoresizingMaskIntoConstraints = false
let bottomConstraint = sliderMenu.bottomAnchor.constraint(equalTo: bottomMenu.topAnchor)
let leftConstraint = sliderMenu.leftAnchor.constraint(equalTo: view.leftAnchor)
let rightConstraint = sliderMenu.rightAnchor.constraint(equalTo: view.rightAnchor)
let heightConstraint = sliderMenu.heightAnchor.constraint(equalToConstant: 44)
NSLayoutConstraint.activate([bottomConstraint, leftConstraint, rightConstraint, heightConstraint])
view.layoutIfNeeded()
self.sliderMenu.alpha = 0
UIView.animate(withDuration: 0.4, animations: {
self.sliderMenu.alpha = 1.0
})
}
func hideSlider() {
UIView.animate(withDuration: 0.4, animations: {
self.sliderMenu.alpha = 0
}, completion: { completed in
if completed == true {
self.sliderMenu.removeFromSuperview()
}
})
}
}