//
// san.m
// san
//
// Created by baipeng on 2017/6/12.
// Copyright ? 2017年 BPG. All rights reserved.
//

import "san.h"

@implementation san

• (instancetype)initWithFrame:(CGRect)frame
  {
  self = [super initWithFrame:frame];
  if (self) {
  UIView *bac = [[UIView alloc]initWithFrame:[self menuFrame]];
  bac.backgroundColor = [UIColor whiteColor];
  bac.layer.masksToBounds = YES;
  bac.layer.cornerRadius = 4.0;
  [self addSubview:bac];
  }
  return self;
  }
• (CGRect)menuFrame {
  CGFloat menuX = [UIScreen mainScreen].bounds.size.width - 180;
  CGFloat menuY = 60;
  CGFloat width = 150;
  CGFloat heigh = 40 * 6;
  return (CGRect){menuX,menuY,width,heigh};
  }

pragma mark 繪制三角形

• (void)drawRect:(CGRect)rect

{
// 設(shè)置背景色
[[UIColor whiteColor] set];
//拿到當(dāng)前視圖準(zhǔn)備好的畫板

CGContextRef  context = UIGraphicsGetCurrentContext();

//利用path進(jìn)行繪制三角形

CGContextBeginPath(context);//標(biāo)記
CGFloat location = self.frame.size.width - 30 - 10 - 10;
CGContextMoveToPoint(context,
                     location+8, 50);//設(shè)置起點 上點

CGContextAddLineToPoint(context,
                        location , 60);//左側(cè)

CGContextAddLineToPoint(context,
                        location + 16, 60);//右側(cè)

CGContextClosePath(context);//路徑結(jié)束標(biāo)志，不寫默認(rèn)封閉

[[UIColor whiteColor] setFill];  //設(shè)置填充色

[[UIColor whiteColor] setStroke]; //設(shè)置邊框顏色

CGContextDrawPath(context,
                  kCGPathFillStroke);//繪制路徑path

}

@end