//
// MJLockView.m
// 03-手势解锁
//
// Created by apple on 14-4-20.
// Copyright (c) 2014年 itcast. All rights reserved.
//

import "MJLockView.h"

@implementation MJLockView
//当你通过代码创建控件就会调用这个方法

• (id)initWithFrame:(CGRect)frame
  {
  self = [super initWithFrame:frame];
  if (self) {
  [self setup];
  }
  return self;
  }
  //当你通过storyboared或者xib中创建控件就会调用这个方法
• (id)initWithCoder:(NSCoder *)aDecoder
  {
  if (self = [super initWithCoder:aDecoder]) {
  [self setup];
  }
  return self;
  }

/**
初始化
*/

• (void)setup
  {
  for (int index = 0; index<9; index++) {
  // 创建按钮
  UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom];

    btn.userInteractionEnabled = NO;
    
    btn.backgroundColor = [UIColor blueColor];
    
    // 设置默认的背景图片
    [btn setBackgroundImage:[UIImage imageNamed:@"gesture_node_normal"] forState:UIControlStateNormal];
    
    // 设置选中时的背景图片(selected)
    [btn setBackgroundImage:[UIImage imageNamed:@"gesture_node_highlighted"] forState:UIControlStateSelected];
    
    // 添加按钮
    [self addSubview:btn];
  

  }
  }

// 调整按钮的frame最好在这个方法里面

• (void)layoutSubviews
  {
  [super layoutSubviews];

  for (int index = 0; index<self.subviews.count; index++) {
  // 取出按钮
  UIButton *btn = self.subviews[index];

    // 设置frame
    CGFloat btnW = 74;
    CGFloat btnH = 74;
    
    int totalColumns = 3;
    int col = index % totalColumns;
    int row = index / totalColumns;
    CGFloat marginX = (self.frame.size.width - totalColumns * btnW) / (totalColumns + 1);
    CGFloat marginY = marginX;
    
    CGFloat btnX = marginX + col * (btnW + marginX);
    CGFloat btnY = row * (btnH + marginY);
    btn.frame = CGRectMake(btnX, btnY, btnW, btnH);
  

  }
  }

• (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
  {
  UITouch *touch = [touches anyObject];
  CGPoint pos = [touch locationInView:touch.view];

  for (UIButton *btn in self.subviews) {
  if (CGRectContainsPoint(btn.frame, pos)) {
  btn.selected = YES;
  }
  }

}

• (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event
  {
  UITouch *touch = [touches anyObject];
  CGPoint pos = [touch locationInView:touch.view];

  for (UIButton *btn in self.subviews) {
  if (CGRectContainsPoint(btn.frame, pos)) {
  btn.selected = YES;
  }
  }
  }

• (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event
  {

}

• (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event
  {
  [self touchesEnded:touches withEvent:event];
  }

• (void)drawRect:(CGRect)rect
  {

}

@end