77 lines
2.5 KiB
Swift
77 lines
2.5 KiB
Swift
/*
|
|
* QRCodeReader.swift
|
|
*
|
|
* Copyright 2014-present Yannick Loriot.
|
|
* http://yannickloriot.com
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*
|
|
*/
|
|
|
|
import UIKit
|
|
|
|
/// Overlay over the camera view to display the area (a square) where to scan the code.
|
|
public final class ReaderOverlayView: UIView {
|
|
private var overlay: CAShapeLayer = {
|
|
var overlay = CAShapeLayer()
|
|
overlay.backgroundColor = UIColor.clear.cgColor
|
|
overlay.fillColor = UIColor.clear.cgColor
|
|
overlay.strokeColor = UIColor.white.cgColor
|
|
overlay.lineWidth = 3
|
|
overlay.lineDashPattern = [7.0, 7.0]
|
|
overlay.lineDashPhase = 0
|
|
|
|
return overlay
|
|
}()
|
|
|
|
override init(frame: CGRect) {
|
|
super.init(frame: frame)
|
|
|
|
setupOverlay()
|
|
}
|
|
|
|
required public init?(coder aDecoder: NSCoder) {
|
|
super.init(coder: aDecoder)
|
|
|
|
setupOverlay()
|
|
}
|
|
|
|
private func setupOverlay() {
|
|
layer.addSublayer(overlay)
|
|
}
|
|
|
|
public override func draw(_ rect: CGRect) {
|
|
var innerRect = rect.insetBy(dx: 50, dy: 50)
|
|
let minSize = min(innerRect.width, innerRect.height)
|
|
|
|
if innerRect.width != minSize {
|
|
innerRect.origin.x += (innerRect.width - minSize) / 2
|
|
innerRect.size.width = minSize
|
|
}
|
|
else if innerRect.height != minSize {
|
|
innerRect.origin.y += (innerRect.height - minSize) / 2
|
|
innerRect.size.height = minSize
|
|
}
|
|
|
|
let offsetRect = innerRect.offsetBy(dx: 0, dy: 15)
|
|
|
|
overlay.path = UIBezierPath(roundedRect: offsetRect, cornerRadius: 5).cgPath
|
|
}
|
|
}
|