//

// PooCodeView.m

// Code

//

// Created by 韩俊强 7/2/2016.

// Copyright (c) 韩俊强 7/2/2016. All rights reserved.

//

#import "PooCodeView.h"

#define RGBColor(r, g, b , a) [UIColor colorWithRed:(r)/255.0 green:(g)/255.0 blue:(b)/255.0 alpha:a]

#define RandColor(a) RGBColor(arc4random_uniform(255), arc4random_uniform(255), arc4random_uniform(255), a)

@interface PooCodeView ()

@property (nonatomic, retain) NSArray *changeArray; // 随机内容

@end

@implementation PooCodeView

@synthesize changeArray = _changeArray;

@synthesize changeString = _changeString;

- (id)initWithFrame:(CGRect)frame andChangeArray:(NSArray *)changeArr

{

self = [super initWithFrame:frame];

if (self) {

self.backgroundColor = RandColor(0.2);

UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapClick:)];

[self addGestureRecognizer:tap];

_changeArray = changeArr;

[self change];

}

return self;

}

- (void)tapClick:(UITapGestureRecognizer*)tap

{

[self changeCode];

}

- (void)changeCode

{

[self change];

[self setNeedsDisplay];

}

- (void)change

{

if (!self.changeArray.count) {

self.changeArray = [[NSArray alloc] initWithObjects:@"0",@"1",@"2",@"3",@"4",@"5",@"6",@"7",@"8",@"9",@"A",@"B",@"C",@"D",@"E",@"F",@"G",@"H",@"I",@"J",@"K",@"L",@"M",@"N",@"O",@"P",@"Q",@"R",@"S",@"T",@"U",@"V",@"W",@"X",@"Y",@"Z",@"a",@"b",@"c",@"d",@"e",@"f",@"g",@"h",@"i",@"j",@"k",@"l",@"m",@"n",@"o",@"p",@"q",@"r",@"s",@"t",@"u",@"v",@"w",@"x",@"y",@"z",nil];

}

NSMutableString *getStr = [[NSMutableString alloc] initWithCapacity:5];

self.changeString = [[NSMutableString alloc] initWithCapacity:6];

for(NSInteger i = 0; i < 4; i++){

NSInteger index = arc4random() % ([self.changeArray count] - 1);

getStr = [self.changeArray objectAtIndex:index];

self.changeString = (NSMutableString *)[self.changeString stringByAppendingString:getStr];

}

}

- (void)drawRect:(CGRect)rect

{

[super drawRect:rect];

UIColor *color = RandColor(0.5);

[self setBackgroundColor:color];

NSString *text = [NSString stringWithFormat:@"%@",self.changeString];

CGSize cSize = [@"S" sizeWithAttributes:@{NSFontAttributeName:[UIFont systemFontOfSize:_textSize>0?_textSize:20],NSForegroundColorAttributeName:_textColor?_textColor:[UIColor blackColor]}];

int width = rect.size.width / text.length - cSize.width;

int height = rect.size.height - cSize.height;

CGPoint point;

float pX, pY;

for (int i = 0; i < text.length; i++){

pX = arc4random() % width + rect.size.width / text.length * i;

pY = arc4random() % height;

point = CGPointMake(pX, pY);

unichar c = [text characterAtIndex:i];

NSString *textC = [NSString stringWithFormat:@"%C", c];

[textC drawAtPoint:point withAttributes:@{NSFontAttributeName:[UIFont systemFontOfSize:_textSize>0?_textSize:20],NSForegroundColorAttributeName:_textColor?_textColor:[UIColor blackColor]}];

}

CGContextRef context = UIGraphicsGetCurrentContext();

CGContextSetLineWidth(context, 1.0);

for(int cout = 0; cout < 10; cout++){

color = RandColor(0.2);

CGContextSetStrokeColorWithColor(context, [color CGColor]);

pX = arc4random() % (int)rect.size.width;

pY = arc4random() % (int)rect.size.height;

CGContextMoveToPoint(context, pX, pY);

pX = arc4random() % (int)rect.size.width;

pY = arc4random() % (int)rect.size.height;

CGContextAddLineToPoint(context, pX, pY);

CGContextStrokePath(context);

}

}

@end