//
//  GraphicViewView.swift
//  uiGrafik1
//
//  Created by Michael Wilhelm on 30/04/2016.
//  Copyright © 2016 Michael Wilhelm. All rights reserved.
//

import UIKit

// https://developer.apple.com/library/ios/documentation/GraphicsImaging/Reference/CGContext/index.html

// http://techotopia.com/index.php/An_iOS_8_Swift_Graphics_Tutorial_using_Core_Graphics_and_Core_Image

// https://www.raywenderlich.com/87899/make-simple-drawing-app-uikit-swift

/*

let colorSpace = CGColorSpaceCreateDeviceRGB()
let components: [CGFloat] = [0.0, 0.0, 1.0, 1.0]
let color = CGColorCreate(colorSpace, components)


override func drawRect(rect: CGRect)
{
let context = UIGraphicsGetCurrentContext()
CGContextSetLineWidth(context, 4.0)
CGContextSetStrokeColorWithColor(context,
UIColor.blueColor().CGColor)
let rectangle = CGRectMake(60,170,200,80)
CGContextAddRect(context, rectangle)
CGContextStrokePath(context)
}


override func drawRect(rect: CGRect)
{
let context = UIGraphicsGetCurrentContext()
CGContextSetLineWidth(context, 4.0)
CGContextSetStrokeColorWithColor(context,
UIColor.blueColor().CGColor)
let rectangle = CGRectMake(60,170,200,80)
CGContextAddEllipseInRect(context, rectangle)
CGContextStrokePath(context)
}

fillRaute
override func drawRect(rect: CGRect)
{
let context = UIGraphicsGetCurrentContext()
CGContextMoveToPoint(context, 100, 100)
CGContextAddLineToPoint(context, 150, 150)
CGContextAddLineToPoint(context, 100, 200)
CGContextAddLineToPoint(context, 50, 150)
CGContextAddLineToPoint(context, 100, 100)
CGContextSetFillColorWithColor(context,
UIColor.redColor().CGColor)
CGContextFillPath(context)
}

Rect with Border
override func drawRect(rect: CGRect)
{
let context = UIGraphicsGetCurrentContext()
CGContextSetLineWidth(context, 4.0)
CGContextSetStrokeColorWithColor(context,
UIColor.blueColor().CGColor)
let rectangle = CGRectMake(60,170,200,80)
CGContextAddRect(context, rectangle)
CGContextStrokePath(context)
CGContextSetFillColorWithColor(context,
UIColor.redColor().CGColor)
CGContextFillRect(context, rectangle)
}

Bogen
override func drawRect(rect: CGRect)
{
let context = UIGraphicsGetCurrentContext()
CGContextSetLineWidth(context, 4.0)
CGContextSetStrokeColorWithColor(context,
UIColor.blueColor().CGColor)
CGContextMoveToPoint(context, 100, 100)
CGContextAddArcToPoint(context, 100,200, 300,200, 100)
CGContextStrokePath(context)
}



Bezier
override func drawRect(rect: CGRect)
{
let context = UIGraphicsGetCurrentContext()
CGContextSetLineWidth(context, 4.0)
CGContextSetStrokeColorWithColor(context,
UIColor.blueColor().CGColor)
CGContextMoveToPoint(context, 10, 10)
CGContextAddCurveToPoint(context, 0, 50, 300, 250, 300, 400)
CGContextStrokePath(context)
}


Bezuer
override func drawRect(rect: CGRect)
{
let context = UIGraphicsGetCurrentContext()
CGContextSetLineWidth(context, 4.0)
CGContextSetStrokeColorWithColor(context,
UIColor.blueColor().CGColor)
CGContextMoveToPoint(context, 10, 200)
CGContextAddQuadCurveToPoint(context, 150, 10, 300, 200)
CGContextStrokePath(context)
}


Strichart
let dashArray:[CGFloat] = [2,6,4,2]
CGContextSetLineDash(context, 3, dashArray, 4)

*/



class GraphicViewView: UIView {
    
    func test1(rect: CGRect){
        let context = UIGraphicsGetCurrentContext()
        let red = UIColor.redColor().CGColor
        CGContextSetLineWidth(context, 3.0)
        CGContextSetStrokeColorWithColor(context, red)
        CGContextMoveToPoint(context, 10, 10)
        CGContextAddLineToPoint(context, 200, 500)
        CGContextStrokePath(context)
    }

    
    func test2(rect: CGRect){
        let context = UIGraphicsGetCurrentContext()
        let red = UIColor.redColor().CGColor
        let blue = UIColor.blueColor().CGColor
        
        CGContextSetLineWidth(context, 3.0)
        CGContextSetStrokeColorWithColor(context, red)
        CGContextMoveToPoint(context, 10, 10)
        CGContextAddLineToPoint(context, rect.width-10, rect.height-10)
        CGContextStrokePath(context)
        
        
        CGContextSetLineWidth(context, 1.0)
        CGContextSetStrokeColorWithColor(context, blue)
        CGContextMoveToPoint(context, rect.width-10, 10)
        CGContextAddLineToPoint(context, 10, rect.height-10)
        CGContextStrokePath(context)
        
        
      //  CGContextSetTextDrawingMode(<#T##c: CGContext?##CGContext?#>, <#T##mode: CGTextDrawingMode##CGTextDrawingMode#>)
        var s: NSString = "ABCDEF"

        
        
        // set the text color to dark gray
        let fieldColor: UIColor = UIColor.darkGrayColor()
        
        // set the font to Helvetica Neue 18
        let fieldFont = UIFont(name: "Helvetica Neue", size: 18)
        
        // set the line spacing to 6
        var paraStyle = NSMutableParagraphStyle()
        paraStyle.lineSpacing = 6.0
        
        // set the Obliqueness to 0.1
        var skew = 0.1
        
        let font = UIFont(name: "Palatino-Roman", size: 14.0)
        let baselineAdjust = 1.0
        // NSDictionary
        //let dict = NSDictionary()  // [NSFontAttributeName:font!, NSBaselineOffsetAttributeName:baselineAdjust]
        let attrsDictionary =  [NSFontAttributeName:font!, NSBaselineOffsetAttributeName:baselineAdjust]
        CGContextSetStrokeColorWithColor(context, UIColor.greenColor().CGColor)
        s.drawInRect(CGRectMake(20.0, 140.0, 300.0, 48.0), withAttributes: attrsDictionary)
        CGContextStrokePath(context)
        
    }
    
    func test3(rect: CGRect) {
        let context = UIGraphicsGetCurrentContext()
        
        let locations: [CGFloat] = [ 0.0, 0.25, 0.5, 0.75 ]
        
        let colors = [UIColor.redColor().CGColor,
            UIColor.greenColor().CGColor,
            UIColor.blueColor().CGColor,
            UIColor.yellowColor().CGColor]
        
        let colorspace = CGColorSpaceCreateDeviceRGB()
        
        let gradient = CGGradientCreateWithColors(colorspace,
            colors, locations)
        
        var startPoint = CGPoint()
        var endPoint =  CGPoint()
        
        startPoint.x = 0.0
        startPoint.y = 0.0
        endPoint.x = 600
        endPoint.y = 600
        
        // CGGradientDrawingOptions
        CGContextDrawLinearGradient(context, gradient,  startPoint, endPoint, CGGradientDrawingOptions.DrawsAfterEndLocation)
    }
    
    // Bogens
    func test4(rect:CGRect) {
        let context = UIGraphicsGetCurrentContext()
        CGContextSetLineWidth(context, 4.0)
        CGContextSetStrokeColorWithColor(context,
            UIColor.blueColor().CGColor)
        CGContextMoveToPoint(context, 100, 100)
        CGContextAddArcToPoint(context, 100,200, 300,200, 100)
        CGContextStrokePath(context)
    }
    
    // Bezier
    func test5(rect: CGRect)    {
        let context = UIGraphicsGetCurrentContext()
        CGContextSetLineWidth(context, 4.0)
        CGContextSetStrokeColorWithColor(context,
            UIColor.blueColor().CGColor)
        CGContextMoveToPoint(context, 10, 10)
        CGContextAddCurveToPoint(context, 0, 50, 300, 250, 300, 400)
        CGContextStrokePath(context)
    }
    
    // Bezier
    func test6(rect: CGRect)    {
        let context = UIGraphicsGetCurrentContext()
        CGContextSetLineWidth(context, 4.0)
        CGContextSetStrokeColorWithColor(context,
            UIColor.blueColor().CGColor)
        CGContextMoveToPoint(context, 10, 200)
        CGContextAddQuadCurveToPoint(context, 150, 10, 300, 200)
        CGContextStrokePath(context)
    }
    
    // Only override drawRect: if you perform custom drawing.
    // An empty implementation adversely affects performance during animation.
    override func drawRect(rect: CGRect) {
        // Drawing code
        test6(rect)
    }


}