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- //
- // CandleStickChartViewController.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 "CandleStickChartViewController.h"
- #import "ChartsDemo_iOS-Swift.h"
- @interface CandleStickChartViewController () <ChartViewDelegate>
- @property (nonatomic, strong) IBOutlet CandleStickChartView *chartView;
- @property (nonatomic, strong) IBOutlet UISlider *sliderX;
- @property (nonatomic, strong) IBOutlet UISlider *sliderY;
- @property (nonatomic, strong) IBOutlet UITextField *sliderTextX;
- @property (nonatomic, strong) IBOutlet UITextField *sliderTextY;
- @end
- @implementation CandleStickChartViewController
- - (void)viewDidLoad
- {
- [super viewDidLoad];
-
- self.title = @"Candle Stick Chart";
-
- self.options = @[
- @{@"key": @"toggleValues", @"label": @"Toggle Values"},
- @{@"key": @"toggleIcons", @"label": @"Toggle Icons"},
- @{@"key": @"toggleHighlight", @"label": @"Toggle Highlight"},
- @{@"key": @"animateX", @"label": @"Animate X"},
- @{@"key": @"animateY", @"label": @"Animate Y"},
- @{@"key": @"animateXY", @"label": @"Animate XY"},
- @{@"key": @"saveToGallery", @"label": @"Save to Camera Roll"},
- @{@"key": @"togglePinchZoom", @"label": @"Toggle PinchZoom"},
- @{@"key": @"toggleAutoScaleMinMax", @"label": @"Toggle auto scale min/max"},
- @{@"key": @"toggleShadowColorSameAsCandle", @"label": @"Toggle shadow same color"},
- @{@"key": @"toggleShowCandleBar", @"label": @"Toggle show candle bar"},
- @{@"key": @"toggleData", @"label": @"Toggle Data"},
- ];
-
- _chartView.delegate = self;
-
- _chartView.chartDescription.enabled = NO;
-
- _chartView.maxVisibleCount = 60;
- _chartView.pinchZoomEnabled = NO;
- _chartView.drawGridBackgroundEnabled = NO;
-
- ChartXAxis *xAxis = _chartView.xAxis;
- xAxis.labelPosition = XAxisLabelPositionBottom;
- xAxis.drawGridLinesEnabled = NO;
-
- ChartYAxis *leftAxis = _chartView.leftAxis;
- leftAxis.labelCount = 7;
- leftAxis.drawGridLinesEnabled = NO;
- leftAxis.drawAxisLineEnabled = NO;
-
- ChartYAxis *rightAxis = _chartView.rightAxis;
- rightAxis.enabled = NO;
-
- _chartView.legend.enabled = NO;
-
- _sliderX.value = 40.0;
- _sliderY.value = 100.0;
- [self slidersValueChanged:nil];
- }
- - (void)didReceiveMemoryWarning
- {
- [super didReceiveMemoryWarning];
- // Dispose of any resources that can be recreated.
- }
- - (void)updateChartData
- {
- if (self.shouldHideData)
- {
- _chartView.data = nil;
- return;
- }
-
- [self setDataCount:_sliderX.value + 1 range:_sliderY.value];
- }
- - (void)setDataCount:(int)count range:(double)range
- {
- NSMutableArray *yVals1 = [[NSMutableArray alloc] init];
-
- for (int i = 0; i < count; i++)
- {
- double mult = (range + 1);
- double val = (double) (arc4random_uniform(40)) + mult;
- double high = (double) (arc4random_uniform(9)) + 8.0;
- double low = (double) (arc4random_uniform(9)) + 8.0;
- double open = (double) (arc4random_uniform(6)) + 1.0;
- double close = (double) (arc4random_uniform(6)) + 1.0;
- BOOL even = i % 2 == 0;
- [yVals1 addObject:[[CandleChartDataEntry alloc] initWithX:i shadowH:val + high shadowL:val - low open:even ? val + open : val - open close:even ? val - close : val + close icon: [UIImage imageNamed:@"icon"]]];
- }
-
- CandleChartDataSet *set1 = [[CandleChartDataSet alloc] initWithEntries:yVals1 label:@"Data Set"];
- set1.axisDependency = AxisDependencyLeft;
- [set1 setColor:[UIColor colorWithWhite:80/255.f alpha:1.f]];
-
- set1.drawIconsEnabled = NO;
-
- set1.shadowColor = UIColor.darkGrayColor;
- set1.shadowWidth = 0.7;
- set1.decreasingColor = UIColor.redColor;
- set1.decreasingFilled = YES;
- set1.increasingColor = [UIColor colorWithRed:122/255.f green:242/255.f blue:84/255.f alpha:1.f];
- set1.increasingFilled = NO;
- set1.neutralColor = UIColor.blueColor;
-
- CandleChartData *data = [[CandleChartData alloc] initWithDataSet:set1];
-
- _chartView.data = data;
- }
- - (void)optionTapped:(NSString *)key
- {
- if ([key isEqualToString:@"toggleShadowColorSameAsCandle"])
- {
- for (id<CandleChartDataSetProtocol> set in _chartView.data.dataSets)
- {
- set.shadowColorSameAsCandle = !set.shadowColorSameAsCandle;
- }
-
- [_chartView notifyDataSetChanged];
- return;
- } else if ([key isEqualToString:@"toggleShowCandleBar"])
- {
- for (id<CandleChartDataSetProtocol> set in _chartView.data.dataSets)
- {
- set.showCandleBar = !set.showCandleBar;
- }
-
- [_chartView notifyDataSetChanged];
- return;
- }
-
- [super handleOption:key forChartView:_chartView];
- }
- #pragma mark - Actions
- - (IBAction)slidersValueChanged:(id)sender
- {
- _sliderTextX.text = [@((int)_sliderX.value) stringValue];
- _sliderTextY.text = [@((int)_sliderY.value) stringValue];
-
- [self updateChartData];
- }
- #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");
- }
- @end
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