SolarBT_iOS/SolarBT/Classes/Global/Vender/DVBarChartView/DVYBarView.m

//
//  DVYBarView.m
//  xxxxx
//
//  Created by Fire on 15/11/11.
//  Copyright © 2015年 DuoLaiDian. All rights reserved.
//

#import "DVYBarView.h"
#import "UIView+Extension.h"
#import "UIColor+Hex.h"
#define random(r, g, b, a) [UIColor colorWithRed:(r)/255.0 green:(g)/255.0 blue:(b)/255.0 alpha:(a)/255.0]

#define randomColor random(arc4random_uniform(256), arc4random_uniform(256), arc4random_uniform(256), arc4random_uniform(256))


@interface DVYBarView ()

@property (strong, nonatomic) UIView *separate;

@end

@implementation DVYBarView

- (instancetype)initWithFrame:(CGRect)frame {
    
    if (self = [super initWithFrame:frame]) {
        
        // 垂直坐标轴
        UIView *separate = [[UIView alloc] init];
        
        self.separate = separate;
        
        [self addSubview:separate];
        
        self.textFont = [UIFont systemFontOfSize:12];
        
    }
    return self;
}
- (void)draw {
    
    self.backgroundColor = self.backColor;
    
    
    // 计算坐标轴的位置以及大小
    //    NSDictionary *attr = @{NSFontAttributeName : self.textFont};
    
    //    CGSize labelSize = [@"x" sizeWithAttributes:attr];
    CGSize labelSize = CGSizeMake(self.barWidth, 29);
    
    self.separate.backgroundColor = self.axisColor;
    self.separate.x = self.width - 1;
    self.separate.width = 1;
    self.separate.y = 0;
    if (self.landspace) {
        self.separate.height = self.height - labelSize.height  - self.xAxisTextGap;
    }else{
        self.separate.height = self.height  - self.xAxisTextGap;
    }
    
    
    // 为顶部留出的空白
    CGFloat topMargin = 50;
    
    
    // Label做占据的高度
    CGFloat allLabelHeight = self.height - topMargin - self.xAxisTextGap - labelSize.height;
    if (self.landspace) {
        allLabelHeight = self.height - topMargin - self.xAxisTextGap - labelSize.height;
    } else {
        allLabelHeight = self.height - topMargin - self.xAxisTextGap;
    }
    
    NSDictionary *attr = @{NSFontAttributeName : self.textFont};
    
    CGSize yLabelSize = [@"x" sizeWithAttributes:attr];
    // Label之间的间隙
    CGFloat labelMargin = (allLabelHeight + yLabelSize.height - (self.numberOfYAxisElements + 1) * yLabelSize.height) / self.numberOfYAxisElements;
     
    // 移除所有的Label
    for (UILabel *label in self.subviews) {
        if ([label isKindOfClass:[UILabel class]]) {
            
            [label removeFromSuperview];
        }
    }
    
    // 添加Label
    for (int i = 0; i < self.numberOfYAxisElements + 1; i++) {
        UILabel *label = [[UILabel alloc] init];
        CGFloat avgValue = self.yAxisMaxValue / (self.numberOfYAxisElements);
        if (self.isPercent) {
            label.text = [NSString stringWithFormat:@"%.0f%%", avgValue * i];
        }else{
            label.text = [NSString stringWithFormat:@"%.0f", avgValue * i];
        }
        label.text = @"";
        //label.backgroundColor = [UIColor redColor];
        label.textAlignment = NSTextAlignmentRight;// UITextAlignmentRight;
        label.font = self.textFont;
        label.textColor = self.textColor;
        
        label.x = 0;
        label.height = yLabelSize.height;
        if (self.landspace) {
            label.y = self.height - labelSize.height - self.xAxisTextGap - (label.height + labelMargin) * i - label.height/2;
        } else {
            label.y = self.height - self.xAxisTextGap - (label.height + labelMargin) * i - label.height/2;
        }
        
        label.width = self.width - 1 - self.yAxisTextGap;
       // [self addSubview:label];
    }
    
    
    //添加图例
    UIView *LegendView = [[UIView alloc]initWithFrame:CGRectMake(0, 0, self.width - 1 , self.height)];

    [  self addSubview:LegendView];
    
    //图例1
    UIView *legendView1 = [[UIView alloc]initWithFrame:CGRectMake(0, 50, 20, 10)];
    legendView1.centerX = LegendView.centerX;
    legendView1.backgroundColor =[UIColor colorWithHexString:@"#FEC591"]; ;
    [LegendView addSubview:legendView1];
    //FEC591
    UILabel *legendLabel1 = [[UILabel alloc]initWithFrame:CGRectMake(0, 50 + 10 + 5, self.width - 1, 60)];
    legendLabel1.textColor = [UIColor colorWithHexString:@"888888"];
    legendLabel1.textAlignment = NSTextAlignmentCenter;
    legendLabel1.numberOfLines = 0;
    legendLabel1.font = [UIFont boldSystemFontOfSize:9];
    legendLabel1.text = self.legendTitle1;
    [LegendView addSubview:legendLabel1];
    
    //图例2
    UIView *legendView2 = [[UIView alloc]initWithFrame:CGRectMake(0, 150, 20, 10)];
    legendView2.centerX = LegendView.centerX;
    legendView2.backgroundColor = [UIColor colorWithHexString:@"#FD8B23"];
    [LegendView addSubview:legendView2];
    
    UILabel *legendLabel2 = [[UILabel alloc]initWithFrame:CGRectMake(0, 150 + 10 + 5, self.width - 1, 60)];
    legendLabel2.textColor = [UIColor colorWithHexString:@"888888"];
    legendLabel2.textAlignment = NSTextAlignmentCenter;
    legendLabel2.numberOfLines = 0;
    legendLabel2.font = [UIFont boldSystemFontOfSize:9];
    legendLabel2.text = self.legendTitle2;
    [LegendView addSubview:legendLabel2];
}
@end