DemoViewController.swift

//
//  DemoViewController.swift
//  DemoView
//
//  Created by Nguyen Van Thieu B on 11/7/16.
//  Copyright © 2016 Thieu Mao. All rights reserved.
//

import UIKit

class DemoViewController: UIViewController {

    @IBOutlet weak var myScrollView: UIScrollView!

    override func viewDidLoad() {
        super.viewDidLoad()

        let pading:CGFloat = 1;
        let leftMarginHour:CGFloat = 5
        let widthHour:CGFloat = 50
        let widthRest:CGFloat = self.view.frame.width - widthHour - leftMarginHour

        // draw Hour
        var d1hourBegin:CGFloat = 0;
        var d1hourEnd:CGFloat = 0;
        for index in 0...24 {
            let y : CGFloat = CGFloat(index * 100)
            var text = String(index)
            if (index < 10) {
                text = "0" + text
            }
            text = text + ":00"
            drawText(text: text, x: leftMarginHour, y: y, width: widthHour, height: 50)
            if (index == 0) {
                d1hourBegin = y;
            }
            if (index == 1) {
                d1hourEnd = y;
            }
        }
        var d1hour:CGFloat = d1hourEnd - d1hourBegin;

        var a:[CGFloat] = [1, 3, 5]
        var b:[CGFloat] = [2, 4, 9]
        var c:[Int] = [1, 1, 1];
        var n:Int = 3
        for i in 0...n-1 {
            for j in 0...n-1 {
                if ((a[i] > b[j]) && (b[j] < b[i])) || ((a[i] > a[j]) && (a[j] < b[i])) {
                    c[i] = c[i] + 1
                }
            }
            print(i)
            print(c[i])
        }

        for i in 0...n-1 {
            // a[i] = Gio bat dau, b[i] = Gio ket thuc, c[i] = so lan
            // d1hour = khoang cach 1 gio
            // widthRest = chieu rong cao lai
            let x:CGFloat = 60;
            let y:CGFloat = a[i] * d1hour;
            //print(c[i])
            let width:CGFloat = widthRest;// / CGFloat(c[i]);
            let height:CGFloat = (b[i] - a[i]) * d1hour;
            drawEvent(x: x, y: y, width: width, height: height)
        }

        // draw Event
        //drawEvent(x: 60, y: 10, width: widthRest/2, height: 200)
        //drawEvent(x: 60+widthRest/2+pading, y: 10, width: widthRest/2, height: 200)
        //drawEvent(x: 60, y: 300, width: widthRest, height: 200)
        //drawEvent(x: 60, y: 700, width: widthRest, height: 200)


        // add contentSize fỏ ScrollView
        var contentRect = CGRect.zero
        for view: UIView in self.myScrollView.subviews {
            contentRect = contentRect.union(view.frame)
        }
        self.myScrollView.contentSize = CGSize(width: self.view.frame.size.width, height: contentRect.height)
    }

    func drawText(text: String, x: CGFloat, y: CGFloat, width: CGFloat, height: CGFloat) {
        let label:UILabel = UILabel(frame: CGRect(x: x, y: y, width: width, height: height))
        label.text = text
        myScrollView.addSubview(label)
    }

    func drawEvent(x: CGFloat, y: CGFloat, width: CGFloat, height: CGFloat) {
        let myView:UIView = UIView(frame: CGRect(x: x, y: y, width: width, height: height))
        myView.backgroundColor = UIColor.orange
        let label:UILabel = UILabel(frame: CGRect(x: 0, y: 0, width: width, height: height))
        label.text = "Mao"
        label.textColor = UIColor.white
        label.textAlignment = .center
        myView.addSubview(label)
        myScrollView.addSubview(myView)
    }

}