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- //
- // CombinedChartViewController.m
- // ChartsDemo
- //
- // Copyright 2015 Daniel Cohen Gindi & Philipp Jahoda
- // A port of MPAndroidChart for iOS
- // Licensed under Apache License 2.0
- //
- // https://github.com/danielgindi/Charts
- //
- #import "CombinedChartViewController.h"
- #import "ChartsDemo_iOS-Swift.h"
- #define ITEM_COUNT 12
- @interface CombinedChartViewController () <ChartViewDelegate, ChartAxisValueFormatter>
- {
- NSArray<NSString *> *months;
- }
- @property (nonatomic, strong) IBOutlet CombinedChartView *chartView;
- @end
- @implementation CombinedChartViewController
- - (void)viewDidLoad
- {
- [super viewDidLoad];
-
- self.title = @"Combined Chart";
-
- self.options = @[
- @{@"key": @"toggleLineValues", @"label": @"Toggle Line Values"},
- @{@"key": @"toggleBarValues", @"label": @"Toggle Bar Values"},
- @{@"key": @"saveToGallery", @"label": @"Save to Camera Roll"},
- @{@"key": @"toggleData", @"label": @"Toggle Data"},
- @{@"key": @"toggleBarBorders", @"label": @"Show Bar Borders"},
- @{@"key": @"removeDataSet", @"label": @"Remove random set"},
- ];
-
- months = @[
- @"Jan", @"Feb", @"Mar",
- @"Apr", @"May", @"Jun",
- @"Jul", @"Aug", @"Sep",
- @"Oct", @"Nov", @"Dec"
- ];
-
- _chartView.delegate = self;
-
- _chartView.chartDescription.enabled = NO;
-
- _chartView.drawGridBackgroundEnabled = NO;
- _chartView.drawBarShadowEnabled = NO;
- _chartView.highlightFullBarEnabled = NO;
-
- _chartView.drawOrder = @[
- @(CombinedChartDrawOrderBar),
- @(CombinedChartDrawOrderBubble),
- @(CombinedChartDrawOrderCandle),
- @(CombinedChartDrawOrderLine),
- @(CombinedChartDrawOrderScatter)
- ];
-
- ChartLegend *l = _chartView.legend;
- l.wordWrapEnabled = YES;
- l.horizontalAlignment = ChartLegendHorizontalAlignmentCenter;
- l.verticalAlignment = ChartLegendVerticalAlignmentBottom;
- l.orientation = ChartLegendOrientationHorizontal;
- l.drawInside = NO;
-
- ChartYAxis *rightAxis = _chartView.rightAxis;
- rightAxis.drawGridLinesEnabled = NO;
- rightAxis.axisMinimum = 0.0; // this replaces startAtZero = YES
-
- ChartYAxis *leftAxis = _chartView.leftAxis;
- leftAxis.drawGridLinesEnabled = NO;
- leftAxis.axisMinimum = 0.0; // this replaces startAtZero = YES
-
- ChartXAxis *xAxis = _chartView.xAxis;
- xAxis.labelPosition = XAxisLabelPositionBothSided;
- xAxis.axisMinimum = 0.0;
- xAxis.granularity = 1.0;
- xAxis.valueFormatter = self;
-
- [self updateChartData];
- }
- - (void)didReceiveMemoryWarning
- {
- [super didReceiveMemoryWarning];
- // Dispose of any resources that can be recreated.
- }
- - (void)updateChartData
- {
- if (self.shouldHideData)
- {
- _chartView.data = nil;
- return;
- }
-
- [self setChartData];
- }
- - (void)setChartData
- {
- CombinedChartData *data = [[CombinedChartData alloc] init];
- data.lineData = [self generateLineData];
- data.barData = [self generateBarData];
- data.bubbleData = [self generateBubbleData];
- data.scatterData = [self generateScatterData];
- data.candleData = [self generateCandleData];
-
- _chartView.xAxis.axisMaximum = data.xMax + 0.25;
- _chartView.data = data;
- }
- - (void)optionTapped:(NSString *)key
- {
- if ([key isEqualToString:@"toggleLineValues"])
- {
- for (NSObject<ChartDataSetProtocol> *set in _chartView.data.dataSets)
- {
- if ([set isKindOfClass:LineChartDataSet.class])
- {
- set.drawValuesEnabled = !set.isDrawValuesEnabled;
- }
- }
-
- [_chartView setNeedsDisplay];
- return;
- }
-
- if ([key isEqualToString:@"toggleBarValues"])
- {
- for (NSObject<ChartDataSetProtocol> *set in _chartView.data.dataSets)
- {
- if ([set isKindOfClass:BarChartDataSet.class])
- {
- set.drawValuesEnabled = !set.isDrawValuesEnabled;
- }
- }
-
- [_chartView setNeedsDisplay];
- return;
- }
-
- if ([key isEqualToString:@"removeDataSet"])
- {
- int rnd = (int)arc4random_uniform((float)_chartView.data.dataSetCount);
- [_chartView.data removeDataSet:[_chartView.data dataSetAtIndex:rnd]];
- [_chartView.data notifyDataChanged];
- [_chartView notifyDataSetChanged];
- }
-
- [super handleOption:key forChartView:_chartView];
- }
- - (LineChartData *)generateLineData
- {
- LineChartData *d = [[LineChartData alloc] init];
-
- NSMutableArray *entries = [[NSMutableArray alloc] init];
-
- for (int index = 0; index < ITEM_COUNT; index++)
- {
- [entries addObject:[[ChartDataEntry alloc] initWithX:index + 0.5 y:(arc4random_uniform(15) + 5)]];
- }
-
- LineChartDataSet *set = [[LineChartDataSet alloc] initWithEntries:entries label:@"Line DataSet"];
- [set setColor:[UIColor colorWithRed:240/255.f green:238/255.f blue:70/255.f alpha:1.f]];
- set.lineWidth = 2.5;
- [set setCircleColor:[UIColor colorWithRed:240/255.f green:238/255.f blue:70/255.f alpha:1.f]];
- set.circleRadius = 5.0;
- set.circleHoleRadius = 2.5;
- set.fillColor = [UIColor colorWithRed:240/255.f green:238/255.f blue:70/255.f alpha:1.f];
- set.mode = LineChartModeCubicBezier;
- set.drawValuesEnabled = YES;
- set.valueFont = [UIFont systemFontOfSize:10.f];
- set.valueTextColor = [UIColor colorWithRed:240/255.f green:238/255.f blue:70/255.f alpha:1.f];
-
- set.axisDependency = AxisDependencyLeft;
-
- [d addDataSet:set];
-
- return d;
- }
- - (BarChartData *)generateBarData
- {
- NSMutableArray<BarChartDataEntry *> *entries1 = [[NSMutableArray alloc] init];
- NSMutableArray<BarChartDataEntry *> *entries2 = [[NSMutableArray alloc] init];
-
- for (int index = 0; index < ITEM_COUNT; index++)
- {
- [entries1 addObject:[[BarChartDataEntry alloc] initWithX:0.0 y:(arc4random_uniform(25) + 25)]];
-
- // stacked
- [entries2 addObject:[[BarChartDataEntry alloc] initWithX:0.0 yValues:@[@(arc4random_uniform(13) + 12), @(arc4random_uniform(13) + 12)]]];
- }
- BarChartDataSet *set1 = [[BarChartDataSet alloc] initWithEntries:entries1 label:@"Bar 1"];
- [set1 setColor:[UIColor colorWithRed:60/255.f green:220/255.f blue:78/255.f alpha:1.f]];
- set1.valueTextColor = [UIColor colorWithRed:60/255.f green:220/255.f blue:78/255.f alpha:1.f];
- set1.valueFont = [UIFont systemFontOfSize:10.f];
- set1.axisDependency = AxisDependencyRight;
-
- BarChartDataSet *set2 = [[BarChartDataSet alloc] initWithEntries:entries2 label:@""];
- set2.stackLabels = @[@"Stack 1", @"Stack 2"];
- set2.colors = @[
- [UIColor colorWithRed:61/255.f green:165/255.f blue:255/255.f alpha:1.f],
- [UIColor colorWithRed:23/255.f green:197/255.f blue:255/255.f alpha:1.f]
- ];
- set2.valueTextColor = [UIColor colorWithRed:61/255.f green:165/255.f blue:255/255.f alpha:1.f];
- set2.valueFont = [UIFont systemFontOfSize:10.f];
- set2.axisDependency = AxisDependencyRight;
- float groupSpace = 0.06f;
- float barSpace = 0.02f; // x2 dataset
- float barWidth = 0.45f; // x2 dataset
- // (0.45 + 0.02) * 2 + 0.06 = 1.00 -> interval per "group"
-
- BarChartData *d = [[BarChartData alloc] initWithDataSets:@[set1, set2]];
- d.barWidth = barWidth;
-
- // make this BarData object grouped
- [d groupBarsFromX:0.0 groupSpace:groupSpace barSpace:barSpace]; // start at x = 0
-
- return d;
- }
- - (ScatterChartData *)generateScatterData
- {
- ScatterChartData *d = [[ScatterChartData alloc] init];
-
- NSMutableArray *entries = [[NSMutableArray alloc] init];
-
- for (double index = 0; index < ITEM_COUNT; index += 0.5)
- {
- [entries addObject:[[ChartDataEntry alloc] initWithX:index + 0.25 y:(arc4random_uniform(10) + 55)]];
- }
-
- ScatterChartDataSet *set = [[ScatterChartDataSet alloc] initWithEntries:entries label:@"Scatter DataSet"];
- set.colors = ChartColorTemplates.material;
- set.scatterShapeSize = 4.5;
- [set setDrawValuesEnabled:NO];
- set.valueFont = [UIFont systemFontOfSize:10.f];
-
- [d addDataSet:set];
-
- return d;
- }
- - (CandleChartData *)generateCandleData
- {
- CandleChartData *d = [[CandleChartData alloc] init];
-
- NSMutableArray *entries = [[NSMutableArray alloc] init];
-
- for (int index = 0; index < ITEM_COUNT; index += 2)
- {
- [entries addObject:[[CandleChartDataEntry alloc] initWithX:index + 1 shadowH:90.0 shadowL:70.0 open:85.0 close:75.0]];
- }
-
- CandleChartDataSet *set = [[CandleChartDataSet alloc] initWithEntries:entries label:@"Candle DataSet"];
- [set setColor:[UIColor colorWithRed:80/255.f green:80/255.f blue:80/255.f alpha:1.f]];
- set.decreasingColor = [UIColor colorWithRed:142/255.0 green:150/255.0 blue:175/255.0 alpha:1.0];
- set.shadowColor = UIColor.darkGrayColor;
- set.valueFont = [UIFont systemFontOfSize:10.f];
- [set setDrawValuesEnabled:NO];
-
- [d addDataSet:set];
-
- return d;
- }
- - (BubbleChartData *)generateBubbleData
- {
- BubbleChartData *bd = [[BubbleChartData alloc] init];
-
- NSMutableArray *entries = [[NSMutableArray alloc] init];
-
- for (int index = 0; index < ITEM_COUNT; index++)
- {
- double y = arc4random_uniform(10) + 105.0;
- double size = arc4random_uniform(50) + 105.0;
- [entries addObject:[[BubbleChartDataEntry alloc] initWithX:index + 0.5 y:y size:size]];
- }
-
- BubbleChartDataSet *set = [[BubbleChartDataSet alloc] initWithEntries:entries label:@"Bubble DataSet"];
- [set setColors:ChartColorTemplates.vordiplom];
- set.valueTextColor = UIColor.whiteColor;
- set.valueFont = [UIFont systemFontOfSize:10.f];
- [set setDrawValuesEnabled:YES];
-
- [bd addDataSet:set];
-
- return bd;
- }
- #pragma mark - ChartViewDelegate
- - (void)chartValueSelected:(ChartViewBase * __nonnull)chartView entry:(ChartDataEntry * __nonnull)entry highlight:(ChartHighlight * __nonnull)highlight
- {
- NSLog(@"chartValueSelected");
- }
- - (void)chartValueNothingSelected:(ChartViewBase * __nonnull)chartView
- {
- NSLog(@"chartValueNothingSelected");
- }
- #pragma mark - AxisValueFormatter
- - (NSString *)stringForValue:(double)value
- axis:(ChartAxisBase *)axis
- {
- return months[(int)value % months.count];
- }
- @end
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