JBAreaChartViewController.m 添加注释

//
//  JBAreaChartViewController.m
//  JBChartViewDemo
//
//  Created by Lars Ott on 21.04.14.
//  Copyright (c) 2014 Jawbone. All rights reserved.
//

#import "JBAreaChartViewController.h"

// Views
#import "JBLineChartView.h"
#import "JBChartHeaderView.h"
#import "JBLineChartFooterView.h"
#import "JBChartInformationView.h"

#define ARC4RANDOM_MAX 0x100000000

typedef NS_ENUM(NSInteger, JBLineChartLine){
 JBLineChartLineSun,
    JBLineChartLineMoon,
    JBLineChartLineCount
};

// Numerics
CGFloat const kJBAreaChartViewControllerChartHeight = 250.0f;
CGFloat const kJBAreaChartViewControllerChartPadding = 10.0f;
CGFloat const kJBAreaChartViewControllerChartHeaderHeight = 75.0f;
CGFloat const kJBAreaChartViewControllerChartHeaderPadding = 20.0f;
CGFloat const kJBAreaChartViewControllerChartFooterHeight = 20.0f;
CGFloat const kJBAreaChartViewControllerChartLineWidth = 2.0f;
CGFloat const kJBAreaChartViewControllerChartSunLineDimmedOpacity = 1.0f;
CGFloat const kJBAreaChartViewControllerChartMoonLineDimmedOpacity = 0.0f;
NSInteger const kJBAreaChartViewControllerMaxNumChartPoints = 12;

// Strings
NSString * const kJBAreaChartViewControllerNavButtonViewKey = @"view";

@interface JBAreaChartViewController () <JBLineChartViewDelegate, JBLineChartViewDataSource>

@property (nonatomic, strong) JBLineChartView *lineChartView;
@property (nonatomic, strong) JBChartInformationView *informationView;
@property (nonatomic, strong) NSArray *chartData;
@property (nonatomic, strong) NSArray *monthlySymbols;

// Buttons
- (void)chartToggleButtonPressed:(id)sender;

// Helpers
- (void)initFakeData;
- (NSArray *)largestLineData; // largest collection of fake line data

@end

@implementation JBAreaChartViewController

#pragma mark - Alloc/Init

- (id)init
{
    self = [super init];
    if (self)
    {
        [self initFakeData];
    }
    return self;
}

- (id)initWithCoder:(NSCoder *)aDecoder
{
    self = [super initWithCoder:aDecoder];
    if (self)
    {
        [self initFakeData];
    }
    return self;
}

- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
    if (self)
    {
        [self initFakeData];
    }
    return self;
}

- (void)dealloc
{
    _lineChartView.delegate = nil;
    _lineChartView.dataSource = nil;
}

#pragma mark - Data

- (void)initFakeData
{
    NSMutableArray *mutableLineCharts = [NSMutableArray array];
    for (int lineIndex=0; lineIndex<JBLineChartLineCount; lineIndex++)
    {
        NSMutableArray *mutableChartData = [NSMutableArray array];
        for (int i=0; i<kJBAreaChartViewControllerMaxNumChartPoints; i++)
        {
            [mutableChartData addObject:[NSNumber numberWithFloat:((double)arc4random() / ARC4RANDOM_MAX) * 12]]; // random number between 0 and 12
        }
        [mutableLineCharts addObject:mutableChartData];
    }
    _chartData = [NSArray arrayWithArray:mutableLineCharts];
    _monthlySymbols = [[[NSDateFormatter alloc] init] shortMonthSymbols];
}

//- (NSArray *)largestLineData
//{
//    NSArray *largestLineData = nil;
//    for (NSArray *lineData in self.chartData)
//    {
//        if ([lineData count] > [largestLineData count])
//        {
//            largestLineData = lineData;
//        }
//    }
//    return largestLineData;
//}

#pragma mark - View Lifecycle

- (void)loadView
{
    [super loadView];
    
    self.view.backgroundColor = kJBColorLineChartControllerBackground;
    self.navigationItem.rightBarButtonItem = [self chartToggleButtonWithTarget:self action:@selector(chartToggleButtonPressed:)];
    
    self.lineChartView = [[JBLineChartView alloc] init];
    self.lineChartView.frame = CGRectMake(kJBAreaChartViewControllerChartPadding, kJBAreaChartViewControllerChartPadding, self.view.bounds.size.width - (kJBAreaChartViewControllerChartPadding * 2), kJBAreaChartViewControllerChartHeight);
    self.lineChartView.delegate = self;
    self.lineChartView.dataSource = self;
    self.lineChartView.headerPadding =kJBAreaChartViewControllerChartHeaderPadding;
    self.lineChartView.backgroundColor = kJBColorLineChartBackground;
    
    JBChartHeaderView *headerView = [[JBChartHeaderView alloc] initWithFrame:CGRectMake(kJBAreaChartViewControllerChartPadding, ceil(self.view.bounds.size.height * 0.5) - ceil(kJBAreaChartViewControllerChartHeaderHeight * 0.5), self.view.bounds.size.width - (kJBAreaChartViewControllerChartPadding * 2), kJBAreaChartViewControllerChartHeaderHeight)];
    headerView.titleLabel.text = [kJBStringLabelAverageShineHoursOfSunMoon uppercaseString];
    headerView.titleLabel.textColor = kJBColorLineChartHeader;
    headerView.titleLabel.shadowColor = [UIColor colorWithWhite:1.0 alpha:0.25];
    headerView.titleLabel.shadowOffset = CGSizeMake(0, 1);
    headerView.subtitleLabel.text = kJBStringLabel2011;
    headerView.subtitleLabel.textColor = kJBColorLineChartHeader;
    headerView.subtitleLabel.shadowColor = [UIColor colorWithWhite:1.0 alpha:0.25];
    headerView.subtitleLabel.shadowOffset = CGSizeMake(0, 1);
    headerView.separatorColor = kJBColorLineChartHeaderSeparatorColor;
    self.lineChartView.headerView = headerView;
    
    JBLineChartFooterView *footerView = [[JBLineChartFooterView alloc] initWithFrame:CGRectMake(kJBAreaChartViewControllerChartPadding, ceil(self.view.bounds.size.height * 0.5) - ceil(kJBAreaChartViewControllerChartFooterHeight * 0.5), self.view.bounds.size.width - (kJBAreaChartViewControllerChartPadding * 2), kJBAreaChartViewControllerChartFooterHeight)];
    footerView.backgroundColor = [UIColor clearColor];
    footerView.leftLabel.text = [[self.monthlySymbols firstObject] uppercaseString];
    footerView.leftLabel.textColor = [UIColor whiteColor];
    footerView.rightLabel.text = [[self.monthlySymbols lastObject] uppercaseString];;
    footerView.rightLabel.textColor = [UIColor whiteColor];
    footerView.sectionCount = [[self chartData] count];
    self.lineChartView.footerView = footerView;
    
    [self.view addSubview:self.lineChartView];
    
    self.informationView = [[JBChartInformationView alloc] initWithFrame:CGRectMake(self.view.bounds.origin.x, CGRectGetMaxY(self.lineChartView.frame), self.view.bounds.size.width, self.view.bounds.size.height - CGRectGetMaxY(self.lineChartView.frame) - CGRectGetMaxY(self.navigationController.navigationBar.frame))];
    [self.informationView setValueAndUnitTextColor:[UIColor colorWithWhite:1.0 alpha:0.75]];
    [self.informationView setTitleTextColor:kJBColorLineChartHeader];
    [self.informationView setTextShadowColor:nil];
    [self.informationView setSeparatorColor:kJBColorLineChartHeaderSeparatorColor];
    [self.view addSubview:self.informationView];
    
    [self.lineChartView reloadData];
}

- (void)viewWillAppear:(BOOL)animated
{
    [super viewWillAppear:animated];
    [self.lineChartView setState:JBChartViewStateExpanded];
}

#pragma mark - JBLineChartViewDataSource

// 相当于tableView 返回多少section，这里是几个图
- (NSUInteger)numberOfLinesInLineChartView:(JBLineChartView *)lineChartView
{
    return [self.chartData count];
}

- (NSUInteger)lineChartView:(JBLineChartView *)lineChartView numberOfVerticalValuesAtLineIndex:(NSUInteger)lineIndex
{
    NSLog(@"count:%lu",[[self.chartData objectAtIndex:lineIndex] count]);
    return [[self.chartData objectAtIndex:lineIndex] count];
}

// 是否显示坐标点
- (BOOL)lineChartView:(JBLineChartView *)lineChartView showsDotsForLineAtLineIndex:(NSUInteger)lineIndex
{
    return NO;
}

// 折线拐角处是否需要圆弧
- (BOOL)lineChartView:(JBLineChartView *)lineChartView smoothLineAtLineIndex:(NSUInteger)lineIndex
{
    return YES;
}

// 未被点击的曲线area的不透明度
- (CGFloat)lineChartView:(JBLineChartView *)lineChartView dimmedSelectionOpacityAtLineIndex:(NSUInteger)lineIndex
{
 if (lineIndex == JBLineChartLineMoon)
 {
  return kJBAreaChartViewControllerChartMoonLineDimmedOpacity;
 }
 else
 {
  return kJBAreaChartViewControllerChartSunLineDimmedOpacity;
 }
}

#pragma mark - JBLineChartViewDelegate

// y 轴上的值value
- (CGFloat)lineChartView:(JBLineChartView *)lineChartView verticalValueForHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex
{
    NSLog(@"value:%f",[[[self.chartData objectAtIndex:lineIndex] objectAtIndex:horizontalIndex] floatValue]);
    return [[[self.chartData objectAtIndex:lineIndex] objectAtIndex:horizontalIndex] floatValue];
}

// 点击事件
- (void)lineChartView:(JBLineChartView *)lineChartView didSelectLineAtIndex:(NSUInteger)lineIndex horizontalIndex:(NSUInteger)horizontalIndex touchPoint:(CGPoint)touchPoint
{
    NSNumber *valueNumber = [[self.chartData objectAtIndex:lineIndex] objectAtIndex:horizontalIndex];
    [self.informationView setValueText:[NSString stringWithFormat:@"%.1f", [valueNumber floatValue]] unitText:kJBStringLabelHours];
    [self.informationView setTitleText:lineIndex == JBLineChartLineSun ? kJBStringLabelSun : kJBStringLabelMoon];
    [self.informationView setHidden:NO animated:YES];
    [self setTooltipVisible:YES animated:YES atTouchPoint:touchPoint];
    [self.tooltipView setText:[[self.monthlySymbols objectAtIndex:horizontalIndex] uppercaseString]];
//    NSLog(@"点击了 lineIndex:%lu,horizationtalIndex:%lu",lineIndex,horizontalIndex);
}

// 取消选中
- (void)didDeselectLineInLineChartView:(JBLineChartView *)lineChartView
{
    [self.informationView setHidden:YES animated:YES];
    [self setTooltipVisible:NO animated:YES];
}

// 边框线的颜色
- (UIColor *)lineChartView:(JBLineChartView *)lineChartView colorForLineAtLineIndex:(NSUInteger)lineIndex
{
    return (lineIndex == JBLineChartLineSun) ? kJBColorAreaChartDefaultSunLineColor: kJBColorAreaChartDefaultMoonLineColor;
}

// 填充色
- (UIColor *)lineChartView:(JBLineChartView *)lineChartView fillColorForLineAtLineIndex:(NSUInteger)lineIndex
{
//    return (lineIndex == JBLineChartLineSun) ? kJBColorAreaChartDefaultSunAreaColor : kJBColorAreaChartDefaultMoonAreaColor;
    return  (lineIndex == JBLineChartLineSun)? [UIColor orangeColor] : kJBColorAreaChartDefaultMoonAreaColor;
}

// 坐标点的颜色
- (UIColor *)lineChartView:(JBLineChartView *)lineChartView colorForDotAtHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex
{
    return (lineIndex == JBLineChartLineSun) ? kJBColorAreaChartDefaultSunLineColor: kJBColorAreaChartDefaultMoonLineColor;
}

// 线宽
- (CGFloat)lineChartView:(JBLineChartView *)lineChartView widthForLineAtLineIndex:(NSUInteger)lineIndex
{
    return kJBAreaChartViewControllerChartLineWidth;
}

// 随手指移动的那个条的颜色
- (UIColor *)lineChartView:(JBLineChartView *)lineChartView verticalSelectionColorForLineAtLineIndex:(NSUInteger)lineIndex
{
    return [UIColor orangeColor];
}

- (UIColor *)lineChartView:(JBLineChartView *)lineChartView selectionColorForLineAtLineIndex:(NSUInteger)lineIndex
{
    return (lineIndex == JBLineChartLineSun) ? kJBColorAreaChartDefaultSunSelectedLineColor: kJBColorAreaChartDefaultMoonSelectedLineColor;
}

// 被选中之后填充色
- (UIColor *)lineChartView:(JBLineChartView *)lineChartView selectionFillColorForLineAtLineIndex:(NSUInteger)lineIndex
{
    return (lineIndex == JBLineChartLineSun) ? [UIColor orangeColor] : kJBColorAreaChartDefaultMoonSelectedAreaColor;
}

- (UIColor *)lineChartView:(JBLineChartView *)lineChartView selectionColorForDotAtHorizontalIndex:(NSUInteger)horizontalIndex atLineIndex:(NSUInteger)lineIndex
{
    return (lineIndex == JBLineChartLineSun) ? kJBColorAreaChartDefaultSunSelectedLineColor: kJBColorAreaChartDefaultMoonSelectedLineColor;
}

- (JBLineChartViewLineStyle)lineChartView:(JBLineChartView *)lineChartView lineStyleForLineAtLineIndex:(NSUInteger)lineIndex
{
    return JBLineChartViewLineStyleSolid;
}

#pragma mark - Buttons

- (void)chartToggleButtonPressed:(id)sender
{
 UIView *buttonImageView = [self.navigationItem.rightBarButtonItem valueForKey:kJBAreaChartViewControllerNavButtonViewKey];
    buttonImageView.userInteractionEnabled = NO;
    
    CGAffineTransform transform = self.lineChartView.state == JBChartViewStateExpanded ? CGAffineTransformMakeRotation(M_PI) : CGAffineTransformMakeRotation(0);
    buttonImageView.transform = transform;
    
    [self.lineChartView setState:self.lineChartView.state == JBChartViewStateExpanded ? JBChartViewStateCollapsed : JBChartViewStateExpanded animated:YES callback:^{
        buttonImageView.userInteractionEnabled = YES;
    }];
}

#pragma mark - Overrides

- (JBChartView *)chartView
{
    return self.lineChartView;
}

@end