CombinedChartViewController.m 10 KB

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  1. //
  2. // CombinedChartViewController.m
  3. // ChartsDemo
  4. //
  5. // Copyright 2015 Daniel Cohen Gindi & Philipp Jahoda
  6. // A port of MPAndroidChart for iOS
  7. // Licensed under Apache License 2.0
  8. //
  9. // https://github.com/danielgindi/Charts
  10. //
  11. #import "CombinedChartViewController.h"
  12. #import "ChartsDemo_iOS-Swift.h"
  13. #define ITEM_COUNT 12
  14. @interface CombinedChartViewController () <ChartViewDelegate, ChartAxisValueFormatter>
  15. {
  16. NSArray<NSString *> *months;
  17. }
  18. @property (nonatomic, strong) IBOutlet CombinedChartView *chartView;
  19. @end
  20. @implementation CombinedChartViewController
  21. - (void)viewDidLoad
  22. {
  23. [super viewDidLoad];
  24. self.title = @"Combined Chart";
  25. self.options = @[
  26. @{@"key": @"toggleLineValues", @"label": @"Toggle Line Values"},
  27. @{@"key": @"toggleBarValues", @"label": @"Toggle Bar Values"},
  28. @{@"key": @"saveToGallery", @"label": @"Save to Camera Roll"},
  29. @{@"key": @"toggleData", @"label": @"Toggle Data"},
  30. @{@"key": @"toggleBarBorders", @"label": @"Show Bar Borders"},
  31. @{@"key": @"removeDataSet", @"label": @"Remove random set"},
  32. ];
  33. months = @[
  34. @"Jan", @"Feb", @"Mar",
  35. @"Apr", @"May", @"Jun",
  36. @"Jul", @"Aug", @"Sep",
  37. @"Oct", @"Nov", @"Dec"
  38. ];
  39. _chartView.delegate = self;
  40. _chartView.chartDescription.enabled = NO;
  41. _chartView.drawGridBackgroundEnabled = NO;
  42. _chartView.drawBarShadowEnabled = NO;
  43. _chartView.highlightFullBarEnabled = NO;
  44. _chartView.drawOrder = @[
  45. @(CombinedChartDrawOrderBar),
  46. @(CombinedChartDrawOrderBubble),
  47. @(CombinedChartDrawOrderCandle),
  48. @(CombinedChartDrawOrderLine),
  49. @(CombinedChartDrawOrderScatter)
  50. ];
  51. ChartLegend *l = _chartView.legend;
  52. l.wordWrapEnabled = YES;
  53. l.horizontalAlignment = ChartLegendHorizontalAlignmentCenter;
  54. l.verticalAlignment = ChartLegendVerticalAlignmentBottom;
  55. l.orientation = ChartLegendOrientationHorizontal;
  56. l.drawInside = NO;
  57. ChartYAxis *rightAxis = _chartView.rightAxis;
  58. rightAxis.drawGridLinesEnabled = NO;
  59. rightAxis.axisMinimum = 0.0; // this replaces startAtZero = YES
  60. ChartYAxis *leftAxis = _chartView.leftAxis;
  61. leftAxis.drawGridLinesEnabled = NO;
  62. leftAxis.axisMinimum = 0.0; // this replaces startAtZero = YES
  63. ChartXAxis *xAxis = _chartView.xAxis;
  64. xAxis.labelPosition = XAxisLabelPositionBothSided;
  65. xAxis.axisMinimum = 0.0;
  66. xAxis.granularity = 1.0;
  67. xAxis.valueFormatter = self;
  68. [self updateChartData];
  69. }
  70. - (void)didReceiveMemoryWarning
  71. {
  72. [super didReceiveMemoryWarning];
  73. // Dispose of any resources that can be recreated.
  74. }
  75. - (void)updateChartData
  76. {
  77. if (self.shouldHideData)
  78. {
  79. _chartView.data = nil;
  80. return;
  81. }
  82. [self setChartData];
  83. }
  84. - (void)setChartData
  85. {
  86. CombinedChartData *data = [[CombinedChartData alloc] init];
  87. data.lineData = [self generateLineData];
  88. data.barData = [self generateBarData];
  89. data.bubbleData = [self generateBubbleData];
  90. data.scatterData = [self generateScatterData];
  91. data.candleData = [self generateCandleData];
  92. _chartView.xAxis.axisMaximum = data.xMax + 0.25;
  93. _chartView.data = data;
  94. }
  95. - (void)optionTapped:(NSString *)key
  96. {
  97. if ([key isEqualToString:@"toggleLineValues"])
  98. {
  99. for (NSObject<ChartDataSetProtocol> *set in _chartView.data.dataSets)
  100. {
  101. if ([set isKindOfClass:LineChartDataSet.class])
  102. {
  103. set.drawValuesEnabled = !set.isDrawValuesEnabled;
  104. }
  105. }
  106. [_chartView setNeedsDisplay];
  107. return;
  108. }
  109. if ([key isEqualToString:@"toggleBarValues"])
  110. {
  111. for (NSObject<ChartDataSetProtocol> *set in _chartView.data.dataSets)
  112. {
  113. if ([set isKindOfClass:BarChartDataSet.class])
  114. {
  115. set.drawValuesEnabled = !set.isDrawValuesEnabled;
  116. }
  117. }
  118. [_chartView setNeedsDisplay];
  119. return;
  120. }
  121. if ([key isEqualToString:@"removeDataSet"])
  122. {
  123. int rnd = (int)arc4random_uniform((float)_chartView.data.dataSetCount);
  124. [_chartView.data removeDataSet:[_chartView.data dataSetAtIndex:rnd]];
  125. [_chartView.data notifyDataChanged];
  126. [_chartView notifyDataSetChanged];
  127. }
  128. [super handleOption:key forChartView:_chartView];
  129. }
  130. - (LineChartData *)generateLineData
  131. {
  132. LineChartData *d = [[LineChartData alloc] init];
  133. NSMutableArray *entries = [[NSMutableArray alloc] init];
  134. for (int index = 0; index < ITEM_COUNT; index++)
  135. {
  136. [entries addObject:[[ChartDataEntry alloc] initWithX:index + 0.5 y:(arc4random_uniform(15) + 5)]];
  137. }
  138. LineChartDataSet *set = [[LineChartDataSet alloc] initWithEntries:entries label:@"Line DataSet"];
  139. [set setColor:[UIColor colorWithRed:240/255.f green:238/255.f blue:70/255.f alpha:1.f]];
  140. set.lineWidth = 2.5;
  141. [set setCircleColor:[UIColor colorWithRed:240/255.f green:238/255.f blue:70/255.f alpha:1.f]];
  142. set.circleRadius = 5.0;
  143. set.circleHoleRadius = 2.5;
  144. set.fillColor = [UIColor colorWithRed:240/255.f green:238/255.f blue:70/255.f alpha:1.f];
  145. set.mode = LineChartModeCubicBezier;
  146. set.drawValuesEnabled = YES;
  147. set.valueFont = [UIFont systemFontOfSize:10.f];
  148. set.valueTextColor = [UIColor colorWithRed:240/255.f green:238/255.f blue:70/255.f alpha:1.f];
  149. set.axisDependency = AxisDependencyLeft;
  150. [d addDataSet:set];
  151. return d;
  152. }
  153. - (BarChartData *)generateBarData
  154. {
  155. NSMutableArray<BarChartDataEntry *> *entries1 = [[NSMutableArray alloc] init];
  156. NSMutableArray<BarChartDataEntry *> *entries2 = [[NSMutableArray alloc] init];
  157. for (int index = 0; index < ITEM_COUNT; index++)
  158. {
  159. [entries1 addObject:[[BarChartDataEntry alloc] initWithX:0.0 y:(arc4random_uniform(25) + 25)]];
  160. // stacked
  161. [entries2 addObject:[[BarChartDataEntry alloc] initWithX:0.0 yValues:@[@(arc4random_uniform(13) + 12), @(arc4random_uniform(13) + 12)]]];
  162. }
  163. BarChartDataSet *set1 = [[BarChartDataSet alloc] initWithEntries:entries1 label:@"Bar 1"];
  164. [set1 setColor:[UIColor colorWithRed:60/255.f green:220/255.f blue:78/255.f alpha:1.f]];
  165. set1.valueTextColor = [UIColor colorWithRed:60/255.f green:220/255.f blue:78/255.f alpha:1.f];
  166. set1.valueFont = [UIFont systemFontOfSize:10.f];
  167. set1.axisDependency = AxisDependencyRight;
  168. BarChartDataSet *set2 = [[BarChartDataSet alloc] initWithEntries:entries2 label:@""];
  169. set2.stackLabels = @[@"Stack 1", @"Stack 2"];
  170. set2.colors = @[
  171. [UIColor colorWithRed:61/255.f green:165/255.f blue:255/255.f alpha:1.f],
  172. [UIColor colorWithRed:23/255.f green:197/255.f blue:255/255.f alpha:1.f]
  173. ];
  174. set2.valueTextColor = [UIColor colorWithRed:61/255.f green:165/255.f blue:255/255.f alpha:1.f];
  175. set2.valueFont = [UIFont systemFontOfSize:10.f];
  176. set2.axisDependency = AxisDependencyRight;
  177. float groupSpace = 0.06f;
  178. float barSpace = 0.02f; // x2 dataset
  179. float barWidth = 0.45f; // x2 dataset
  180. // (0.45 + 0.02) * 2 + 0.06 = 1.00 -> interval per "group"
  181. BarChartData *d = [[BarChartData alloc] initWithDataSets:@[set1, set2]];
  182. d.barWidth = barWidth;
  183. // make this BarData object grouped
  184. [d groupBarsFromX:0.0 groupSpace:groupSpace barSpace:barSpace]; // start at x = 0
  185. return d;
  186. }
  187. - (ScatterChartData *)generateScatterData
  188. {
  189. ScatterChartData *d = [[ScatterChartData alloc] init];
  190. NSMutableArray *entries = [[NSMutableArray alloc] init];
  191. for (double index = 0; index < ITEM_COUNT; index += 0.5)
  192. {
  193. [entries addObject:[[ChartDataEntry alloc] initWithX:index + 0.25 y:(arc4random_uniform(10) + 55)]];
  194. }
  195. ScatterChartDataSet *set = [[ScatterChartDataSet alloc] initWithEntries:entries label:@"Scatter DataSet"];
  196. set.colors = ChartColorTemplates.material;
  197. set.scatterShapeSize = 4.5;
  198. [set setDrawValuesEnabled:NO];
  199. set.valueFont = [UIFont systemFontOfSize:10.f];
  200. [d addDataSet:set];
  201. return d;
  202. }
  203. - (CandleChartData *)generateCandleData
  204. {
  205. CandleChartData *d = [[CandleChartData alloc] init];
  206. NSMutableArray *entries = [[NSMutableArray alloc] init];
  207. for (int index = 0; index < ITEM_COUNT; index += 2)
  208. {
  209. [entries addObject:[[CandleChartDataEntry alloc] initWithX:index + 1 shadowH:90.0 shadowL:70.0 open:85.0 close:75.0]];
  210. }
  211. CandleChartDataSet *set = [[CandleChartDataSet alloc] initWithEntries:entries label:@"Candle DataSet"];
  212. [set setColor:[UIColor colorWithRed:80/255.f green:80/255.f blue:80/255.f alpha:1.f]];
  213. set.decreasingColor = [UIColor colorWithRed:142/255.0 green:150/255.0 blue:175/255.0 alpha:1.0];
  214. set.shadowColor = UIColor.darkGrayColor;
  215. set.valueFont = [UIFont systemFontOfSize:10.f];
  216. [set setDrawValuesEnabled:NO];
  217. [d addDataSet:set];
  218. return d;
  219. }
  220. - (BubbleChartData *)generateBubbleData
  221. {
  222. BubbleChartData *bd = [[BubbleChartData alloc] init];
  223. NSMutableArray *entries = [[NSMutableArray alloc] init];
  224. for (int index = 0; index < ITEM_COUNT; index++)
  225. {
  226. double y = arc4random_uniform(10) + 105.0;
  227. double size = arc4random_uniform(50) + 105.0;
  228. [entries addObject:[[BubbleChartDataEntry alloc] initWithX:index + 0.5 y:y size:size]];
  229. }
  230. BubbleChartDataSet *set = [[BubbleChartDataSet alloc] initWithEntries:entries label:@"Bubble DataSet"];
  231. [set setColors:ChartColorTemplates.vordiplom];
  232. set.valueTextColor = UIColor.whiteColor;
  233. set.valueFont = [UIFont systemFontOfSize:10.f];
  234. [set setDrawValuesEnabled:YES];
  235. [bd addDataSet:set];
  236. return bd;
  237. }
  238. #pragma mark - ChartViewDelegate
  239. - (void)chartValueSelected:(ChartViewBase * __nonnull)chartView entry:(ChartDataEntry * __nonnull)entry highlight:(ChartHighlight * __nonnull)highlight
  240. {
  241. NSLog(@"chartValueSelected");
  242. }
  243. - (void)chartValueNothingSelected:(ChartViewBase * __nonnull)chartView
  244. {
  245. NSLog(@"chartValueNothingSelected");
  246. }
  247. #pragma mark - AxisValueFormatter
  248. - (NSString *)stringForValue:(double)value
  249. axis:(ChartAxisBase *)axis
  250. {
  251. return months[(int)value % months.count];
  252. }
  253. @end