LineChartFilledViewController.m 5.5 KB

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  1. //
  2. // LineChartFilledViewController.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 "LineChartFilledViewController.h"
  12. #import "ChartsDemo_iOS-Swift.h"
  13. @interface LineChartFilledViewController () <ChartViewDelegate>
  14. @property (nonatomic, strong) IBOutlet LineChartView *chartView;
  15. @property (nonatomic, strong) IBOutlet UISlider *sliderX;
  16. @property (nonatomic, strong) IBOutlet UISlider *sliderY;
  17. @property (nonatomic, strong) IBOutlet UITextField *sliderTextX;
  18. @property (nonatomic, strong) IBOutlet UITextField *sliderTextY;
  19. @end
  20. @implementation LineChartFilledViewController
  21. - (void)viewDidLoad
  22. {
  23. [super viewDidLoad];
  24. self.title = @"Filled Line Chart";
  25. _chartView.delegate = self;
  26. _chartView.backgroundColor = UIColor.whiteColor;
  27. _chartView.gridBackgroundColor = [UIColor colorWithRed:51/255.0 green:181/255.0 blue:229/255.0 alpha:150/255.0];
  28. _chartView.drawGridBackgroundEnabled = YES;
  29. _chartView.drawBordersEnabled = YES;
  30. _chartView.chartDescription.enabled = NO;
  31. _chartView.pinchZoomEnabled = NO;
  32. _chartView.dragEnabled = YES;
  33. [_chartView setScaleEnabled:YES];
  34. ChartLegend *l = _chartView.legend;
  35. l.enabled = NO;
  36. ChartXAxis *xAxis = _chartView.xAxis;
  37. xAxis.enabled = NO;
  38. ChartYAxis *leftAxis = _chartView.leftAxis;
  39. leftAxis.axisMaximum = 900.0;
  40. leftAxis.axisMinimum = -250.0;
  41. leftAxis.drawAxisLineEnabled = NO;
  42. leftAxis.drawZeroLineEnabled = NO;
  43. leftAxis.drawGridLinesEnabled = NO;
  44. _chartView.rightAxis.enabled = NO;
  45. _sliderX.value = 100.0;
  46. _sliderY.value = 60.0;
  47. [self slidersValueChanged:nil];
  48. }
  49. - (void)didReceiveMemoryWarning
  50. {
  51. [super didReceiveMemoryWarning];
  52. // Dispose of any resources that can be recreated.
  53. }
  54. - (void)updateChartData
  55. {
  56. if (self.shouldHideData)
  57. {
  58. _chartView.data = nil;
  59. return;
  60. }
  61. [self setDataCount:_sliderX.value range:_sliderY.value];
  62. }
  63. - (void)setDataCount:(int)count range:(double)range
  64. {
  65. NSMutableArray *yVals1 = [NSMutableArray array];
  66. NSMutableArray *yVals2 = [NSMutableArray array];
  67. for (int i = 0; i < count; i++)
  68. {
  69. double val = arc4random_uniform(range) + 50;
  70. [yVals1 addObject:[[ChartDataEntry alloc] initWithX:i y:val]];
  71. }
  72. for (int i = 0; i < count; i++)
  73. {
  74. double val = arc4random_uniform(range) + 450;
  75. [yVals2 addObject:[[ChartDataEntry alloc] initWithX:i y:val]];
  76. }
  77. LineChartDataSet *set1 = nil;
  78. LineChartDataSet *set2 = nil;
  79. if (_chartView.data.dataSetCount > 0)
  80. {
  81. set1 = (LineChartDataSet *)_chartView.data.dataSets[0];
  82. set2 = (LineChartDataSet *)_chartView.data.dataSets[1];
  83. [set1 replaceEntries:yVals1];
  84. [set2 replaceEntries:yVals2];
  85. [_chartView.data notifyDataChanged];
  86. [_chartView notifyDataSetChanged];
  87. }
  88. else
  89. {
  90. set1 = [[LineChartDataSet alloc] initWithEntries:yVals1 label:@"DataSet 1"];
  91. set1.axisDependency = AxisDependencyLeft;
  92. [set1 setColor:[UIColor colorWithRed:255/255.0 green:241/255.0 blue:46/255.0 alpha:1.0]];
  93. set1.drawCirclesEnabled = NO;
  94. set1.lineWidth = 2.0;
  95. set1.circleRadius = 3.0;
  96. set1.fillAlpha = 1.0;
  97. set1.drawFilledEnabled = YES;
  98. set1.fillColor = UIColor.whiteColor;
  99. set1.highlightColor = [UIColor colorWithRed:244/255.0 green:117/255.0 blue:117/255.0 alpha:1.0];
  100. set1.drawCircleHoleEnabled = NO;
  101. set1.fillFormatter = [ChartDefaultFillFormatter withBlock:^CGFloat(id<LineChartDataSetProtocol> _Nonnull dataSet, id<LineChartDataProvider> _Nonnull dataProvider) {
  102. return self.chartView.leftAxis.axisMinimum;
  103. }];
  104. set2 = [[LineChartDataSet alloc] initWithEntries:yVals2 label:@"DataSet 2"];
  105. set2.axisDependency = AxisDependencyLeft;
  106. [set2 setColor:[UIColor colorWithRed:255/255.0 green:241/255.0 blue:46/255.0 alpha:1.0]];
  107. set2.drawCirclesEnabled = NO;
  108. set2.lineWidth = 2.0;
  109. set2.circleRadius = 3.0;
  110. set2.fillAlpha = 1.0;
  111. set2.drawFilledEnabled = YES;
  112. set2.fillColor = UIColor.whiteColor;
  113. set2.highlightColor = [UIColor colorWithRed:244/255.0 green:117/255.0 blue:117/255.0 alpha:1.0];
  114. set2.drawCircleHoleEnabled = NO;
  115. set2.fillFormatter = [ChartDefaultFillFormatter withBlock:^CGFloat(id<LineChartDataSetProtocol> _Nonnull dataSet, id<LineChartDataProvider> _Nonnull dataProvider) {
  116. return self.chartView.leftAxis.axisMaximum;
  117. }];
  118. NSMutableArray *dataSets = [[NSMutableArray alloc] init];
  119. [dataSets addObject:set1];
  120. [dataSets addObject:set2];
  121. LineChartData *data = [[LineChartData alloc] initWithDataSets:dataSets];
  122. [data setDrawValues:NO];
  123. _chartView.data = data;
  124. }
  125. }
  126. #pragma mark - Actions
  127. - (IBAction)slidersValueChanged:(id)sender
  128. {
  129. _sliderTextX.text = [@((int)_sliderX.value) stringValue];
  130. _sliderTextY.text = [@((int)_sliderY.value) stringValue];
  131. [self updateChartData];
  132. }
  133. #pragma mark - ChartViewDelegate
  134. - (void)chartValueSelected:(ChartViewBase * __nonnull)chartView entry:(ChartDataEntry * __nonnull)entry highlight:(ChartHighlight * __nonnull)highlight
  135. {
  136. NSLog(@"chartValueSelected");
  137. }
  138. - (void)chartValueNothingSelected:(ChartViewBase * __nonnull)chartView
  139. {
  140. NSLog(@"chartValueNothingSelected");
  141. }
  142. @end