import Foundation
import UIKit
import AppBundle
import AsyncDisplayKit
import Display
import SwiftSignalKit
import Camera
import GlassButtonNode
import CoreImage
import AlertUI
import WalletUrl
private func generateFrameImage() -> UIImage? {
return generateImage(CGSize(width: 64.0, height: 64.0), contextGenerator: { size, context in
let bounds = CGRect(origin: CGPoint(), size: size)
context.clear(bounds)
context.setStrokeColor(UIColor.white.cgColor)
context.setLineWidth(4.0)
context.setLineCap(.round)
var path = CGMutablePath();
path.move(to: CGPoint(x: 2.0, y: 2.0 + 26.0))
path.addArc(tangent1End: CGPoint(x: 2.0, y: 2.0), tangent2End: CGPoint(x: 2.0 + 26.0, y: 2.0), radius: 6.0)
path.addLine(to: CGPoint(x: 2.0 + 26.0, y: 2.0))
context.addPath(path)
context.strokePath()
path.move(to: CGPoint(x: size.width - 2.0, y: 2.0 + 26.0))
path.addArc(tangent1End: CGPoint(x: size.width - 2.0, y: 2.0), tangent2End: CGPoint(x: 2.0 + 26.0, y: 2.0), radius: 6.0)
path.addLine(to: CGPoint(x: size.width - 2.0 - 26.0, y: 2.0))
context.addPath(path)
context.strokePath()
path.move(to: CGPoint(x: 2.0, y: size.height - 2.0 - 26.0))
path.addArc(tangent1End: CGPoint(x: 2.0, y: size.height - 2.0), tangent2End: CGPoint(x: 2.0 + 26.0, y: size.height - 2.0), radius: 6.0)
path.addLine(to: CGPoint(x: 2.0 + 26.0, y: size.height - 2.0))
context.addPath(path)
context.strokePath()
path.move(to: CGPoint(x: size.width - 2.0, y: size.height - 2.0 - 26.0))
path.addArc(tangent1End: CGPoint(x: size.width - 2.0, y: size.height - 2.0), tangent2End: CGPoint(x: 2.0 + 26.0, y: size.height - 2.0), radius: 6.0)
path.addLine(to: CGPoint(x: size.width - 2.0 - 26.0, y: size.height - 2.0))
context.addPath(path)
context.strokePath()
})?.stretchableImage(withLeftCapWidth: 32, topCapHeight: 32)
}
public final class WalletQrScanScreen: ViewController {
private let context: WalletContext
private let completion: (ParsedWalletUrl) -> Void
private var presentationData: WalletPresentationData
private var codeDisposable: Disposable?
private var inForegroundDisposable: Disposable?
public init(context: WalletContext, completion: @escaping (ParsedWalletUrl) -> Void) {
self.context = context
self.completion = completion
self.presentationData = context.presentationData
let navigationBarTheme = NavigationBarTheme(buttonColor: .white, disabledButtonColor: .white, primaryTextColor: .white, backgroundColor: .clear, separatorColor: .clear, badgeBackgroundColor: .clear, badgeStrokeColor: .clear, badgeTextColor: .clear)
super.init(navigationBarPresentationData: NavigationBarPresentationData(theme: navigationBarTheme, strings: NavigationBarStrings(back: self.presentationData.strings.Wallet_Navigation_Back, close: self.presentationData.strings.Wallet_Navigation_Close)))
self.statusBar.statusBarStyle = .White
self.navigationPresentation = .modalInLargeLayout
self.supportedOrientations = ViewControllerSupportedOrientations(regularSize: .all, compactSize: .portrait)
self.navigationBar?.intrinsicCanTransitionInline = false
self.navigationItem.backBarButtonItem = UIBarButtonItem(title: self.presentationData.strings.Wallet_Navigation_Back, style: .plain, target: nil, action: nil)
self.inForegroundDisposable = (context.inForeground
|> deliverOnMainQueue).start(next: { [weak self] inForeground in
guard let strongSelf = self else {
return
}
(strongSelf.displayNode as! WalletQrScanScreenNode).updateInForeground(inForeground)
})
}
required init(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
deinit {
self.codeDisposable?.dispose()
self.inForegroundDisposable?.dispose()
}
@objc private func backPressed() {
self.dismiss()
}
override public func loadDisplayNode() {
self.displayNode = WalletQrScanScreenNode(presentationData: self.presentationData)
self.displayNodeDidLoad()
self.codeDisposable = ((self.displayNode as! WalletQrScanScreenNode).focusedCode.get()
|> map { code -> String? in
return code?.message
}
|> distinctUntilChanged
|> mapToSignal { code -> Signal<String?, NoError> in
return .single(code) |> delay(0.5, queue: Queue.mainQueue())
}).start(next: { [weak self] code in
guard let strongSelf = self, let code = code else {
return
}
if let url = URL(string: code), let parsedWalletUrl = parseWalletUrl(url) {
strongSelf.completion(parsedWalletUrl)
}
})
(self.displayNode as! WalletQrScanScreenNode).presentGallery = { [weak self] in
guard let strongSelf = self else {
return
}
strongSelf.context.pickImage(present: { c in
strongSelf.push(c)
}, completion: { image in
let detector = CIDetector(ofType: CIDetectorTypeQRCode, context: nil, options: [CIDetectorAccuracy: CIDetectorAccuracyHigh])!
if let ciImage = CIImage(image: image) {
var options: [String: Any]
if ciImage.properties.keys.contains((kCGImagePropertyOrientation as String)) {
options = [CIDetectorImageOrientation: ciImage.properties[(kCGImagePropertyOrientation as String)] ?? 1]
} else {
options = [CIDetectorImageOrientation: 1]
}
let features = detector.features(in: ciImage, options: options)
for case let row as CIQRCodeFeature in features {
guard let message = row.messageString else {
continue
}
if let url = URL(string: message), let parsedWalletUrl = parseWalletUrl(url) {
strongSelf.completion(parsedWalletUrl)
return
}
}
}
let theme = strongSelf.context.presentationData.theme
let controller = textAlertController(alertContext: AlertControllerContext(theme: theme.alert, themeSignal: .single(theme.alert)), title: nil, text: "No valid QR code detected.", actions: [TextAlertAction(type: .defaultAction, title: strongSelf.presentationData.strings.Wallet_Alert_OK, action: {})])
strongSelf.present(controller, in: .window(.root))
})
}
}
override public func containerLayoutUpdated(_ layout: ContainerViewLayout, transition: ContainedViewLayoutTransition) {
super.containerLayoutUpdated(layout, transition: transition)
(self.displayNode as! WalletQrScanScreenNode).containerLayoutUpdated(layout: layout, navigationHeight: self.navigationHeight, transition: transition)
}
}
private final class WalletQrScanScreenNode: ViewControllerTracingNode, UIScrollViewDelegate {
private var presentationData: WalletPresentationData
private let previewNode: CameraPreviewNode
private let fadeNode: ASDisplayNode
private let topDimNode: ASDisplayNode
private let bottomDimNode: ASDisplayNode
private let leftDimNode: ASDisplayNode
private let rightDimNode: ASDisplayNode
private let frameNode: ASImageNode
private let galleryButtonNode: GlassButtonNode
private let torchButtonNode: GlassButtonNode
private let titleNode: ImmediateTextNode
private let camera: Camera
private let codeDisposable = MetaDisposable()
fileprivate let focusedCode = ValuePromise<CameraCode?>(ignoreRepeated: true)
private var focusedRect: CGRect?
var presentGallery: (() -> Void)?
private var validLayout: (ContainerViewLayout, CGFloat)?
init(presentationData: WalletPresentationData) {
self.presentationData = presentationData
self.previewNode = CameraPreviewNode()
self.previewNode.backgroundColor = .black
self.fadeNode = ASDisplayNode()
self.fadeNode.alpha = 0.0
self.fadeNode.backgroundColor = .black
self.topDimNode = ASDisplayNode()
self.topDimNode.alpha = 0.625
self.topDimNode.backgroundColor = UIColor(rgb: 0x000000, alpha: 0.8)
self.bottomDimNode = ASDisplayNode()
self.bottomDimNode.alpha = 0.625
self.bottomDimNode.backgroundColor = UIColor(rgb: 0x000000, alpha: 0.8)
self.leftDimNode = ASDisplayNode()
self.leftDimNode.alpha = 0.625
self.leftDimNode.backgroundColor = UIColor(rgb: 0x000000, alpha: 0.8)
self.rightDimNode = ASDisplayNode()
self.rightDimNode.alpha = 0.625
self.rightDimNode.backgroundColor = UIColor(rgb: 0x000000, alpha: 0.8)
self.frameNode = ASImageNode()
self.frameNode.image = generateFrameImage()
self.galleryButtonNode = GlassButtonNode(icon: UIImage(bundleImageName: "Wallet/CameraGalleryIcon")!, label: nil)
self.torchButtonNode = GlassButtonNode(icon: UIImage(bundleImageName: "Wallet/CameraFlashIcon")!, label: nil)
self.titleNode = ImmediateTextNode()
self.titleNode.displaysAsynchronously = false
self.titleNode.attributedText = NSAttributedString(string: presentationData.strings.Wallet_Qr_ScanCode, font: Font.bold(32.0), textColor: .white)
self.titleNode.maximumNumberOfLines = 0
self.titleNode.textAlignment = .center
self.camera = Camera(configuration: .init(preset: .hd1920x1080, position: .back, audio: false))
super.init()
self.backgroundColor = self.presentationData.theme.list.plainBackgroundColor
self.addSubnode(self.previewNode)
self.addSubnode(self.fadeNode)
self.addSubnode(self.topDimNode)
self.addSubnode(self.bottomDimNode)
self.addSubnode(self.leftDimNode)
self.addSubnode(self.rightDimNode)
self.addSubnode(self.frameNode)
self.addSubnode(self.galleryButtonNode)
self.addSubnode(self.torchButtonNode)
self.addSubnode(self.titleNode)
self.galleryButtonNode.addTarget(self, action: #selector(self.galleryPressed), forControlEvents: .touchUpInside)
self.torchButtonNode.addTarget(self, action: #selector(self.torchPressed), forControlEvents: .touchUpInside)
}
deinit {
self.codeDisposable.dispose()
self.camera.stopCapture(invalidate: true)
}
fileprivate func updateInForeground(_ inForeground: Bool) {
if !inForeground {
self.camera.stopCapture(invalidate: false)
} else {
self.camera.startCapture()
}
}
override func didLoad() {
super.didLoad()
self.camera.attachPreviewNode(self.previewNode)
self.camera.startCapture()
let throttledSignal = self.camera.detectedCodes
|> mapToThrottled { next -> Signal<[CameraCode], NoError> in
return .single(next) |> then(.complete() |> delay(0.3, queue: Queue.concurrentDefaultQueue()))
}
self.codeDisposable.set((throttledSignal
|> deliverOnMainQueue).start(next: { [weak self] codes in
guard let strongSelf = self else {
return
}
let filteredCodes = codes.filter { $0.message.hasPrefix("ton://") }
if let code = filteredCodes.first, CGRect(x: 0.3, y: 0.3, width: 0.4, height: 0.4).contains(code.boundingBox.center) {
strongSelf.focusedCode.set(code)
strongSelf.updateFocusedRect(code.boundingBox)
} else {
strongSelf.focusedCode.set(nil)
strongSelf.updateFocusedRect(nil)
}
}))
}
private func updateFocusedRect(_ rect: CGRect?) {
self.focusedRect = rect
if let (layout, navigationHeight) = self.validLayout {
self.containerLayoutUpdated(layout: layout, navigationHeight: navigationHeight, transition: .animated(duration: 0.4, curve: .spring))
}
}
func containerLayoutUpdated(layout: ContainerViewLayout, navigationHeight: CGFloat, transition: ContainedViewLayoutTransition) {
self.validLayout = (layout, navigationHeight)
let sideInset: CGFloat = 66.0
let titleSpacing: CGFloat = 48.0
let bounds = CGRect(origin: CGPoint(), size: layout.size)
if case .tablet = layout.deviceMetrics.type {
if UIDevice.current.orientation == .landscapeLeft {
self.previewNode.transform = CATransform3DMakeRotation(-CGFloat.pi / 2.0, 0.0, 0.0, 1.0)
} else if UIDevice.current.orientation == .landscapeRight {
self.previewNode.transform = CATransform3DMakeRotation(CGFloat.pi / 2.0, 0.0, 0.0, 1.0)
} else {
self.previewNode.transform = CATransform3DIdentity
}
}
transition.updateFrame(node: self.previewNode, frame: bounds)
transition.updateFrame(node: self.fadeNode, frame: bounds)
let frameSide = max(240.0, layout.size.width - sideInset * 2.0)
let dimHeight = ceil((layout.size.height - frameSide) / 2.0)
let dimInset = (layout.size.width - frameSide) / 2.0
let dimAlpha: CGFloat
let dimRect: CGRect
let controlsAlpha: CGFloat
if let focusedRect = self.focusedRect {
controlsAlpha = 0.0
dimAlpha = 1.0
let side = max(bounds.width * focusedRect.width, bounds.height * focusedRect.height) * 0.6
let center = CGPoint(x: (1.0 - focusedRect.center.y) * bounds.width, y: focusedRect.center.x * bounds.height)
dimRect = CGRect(x: center.x - side / 2.0, y: center.y - side / 2.0, width: side, height: side)
} else {
controlsAlpha = 1.0
dimAlpha = 0.625
dimRect = CGRect(x: dimInset, y: dimHeight, width: layout.size.width - dimInset * 2.0, height: layout.size.height - dimHeight * 2.0)
}
transition.updateAlpha(node: self.topDimNode, alpha: dimAlpha)
transition.updateAlpha(node: self.bottomDimNode, alpha: dimAlpha)
transition.updateAlpha(node: self.leftDimNode, alpha: dimAlpha)
transition.updateAlpha(node: self.rightDimNode, alpha: dimAlpha)
transition.updateFrame(node: self.topDimNode, frame: CGRect(x: 0.0, y: 0.0, width: layout.size.width, height: dimRect.minY))
transition.updateFrame(node: self.bottomDimNode, frame: CGRect(x: 0.0, y: dimRect.maxY, width: layout.size.width, height: max(0.0, layout.size.height - dimRect.maxY)))
transition.updateFrame(node: self.leftDimNode, frame: CGRect(x: 0.0, y: dimRect.minY, width: max(0.0, dimRect.minX), height: dimRect.height))
transition.updateFrame(node: self.rightDimNode, frame: CGRect(x: dimRect.maxX, y: dimRect.minY, width: max(0.0, layout.size.width - dimRect.maxX), height: dimRect.height))
transition.updateFrame(node: self.frameNode, frame: dimRect.insetBy(dx: -2.0, dy: -2.0))
let buttonSize = CGSize(width: 72.0, height: 72.0)
transition.updateFrame(node: self.galleryButtonNode, frame: CGRect(origin: CGPoint(x: floor(layout.size.width / 2.0) - buttonSize.width - 28.0, y: dimHeight + frameSide + 50.0), size: buttonSize))
transition.updateFrame(node: self.torchButtonNode, frame: CGRect(origin: CGPoint(x: floor(layout.size.width / 2.0) + 28.0, y: dimHeight + frameSide + 50.0), size: buttonSize))
transition.updateAlpha(node: self.titleNode, alpha: controlsAlpha)
transition.updateAlpha(node: self.galleryButtonNode, alpha: controlsAlpha)
transition.updateAlpha(node: self.torchButtonNode, alpha: controlsAlpha)
let titleSize = self.titleNode.updateLayout(CGSize(width: layout.size.width - sideInset * 2.0, height: layout.size.height))
let titleFrame = CGRect(origin: CGPoint(x: floor((layout.size.width - titleSize.width) / 2.0), y: dimHeight - titleSize.height - titleSpacing), size: titleSize)
transition.updateFrameAdditive(node: self.titleNode, frame: titleFrame)
}
@objc private func galleryPressed() {
self.presentGallery?()
}
@objc private func torchPressed() {
self.torchButtonNode.isSelected = !self.torchButtonNode.isSelected
self.camera.setTorchActive(self.torchButtonNode.isSelected)
}
}