JFreeChart之堆叠柱形图(StackedBar)

JFreeChart之堆叠柱形图(StackedBar)

JAVA

JFreeChart

最近的项目使用有个功能需要使用到堆叠柱形图，看了项目以前的代码实现没有想要的结果。所以自己就先到官网下载了 Demo，Demo里有个打包好的Jar包，直接运行看到效果，但是坑爹的是貌似没有对应的源码，所以只能根据class名称直接google了，所幸在github里找到对应的源码。
点我下载 访问密码 f62b
这是运行Demo找到想要实现的效果的大致图：

我最终想要实现的效果是这样的：

如果想要实现这个效果，可以使用

1. 1extendedstackedbarrenderer.setBaseItemLabelGenerator(new StandardCategoryItemLabelGenerator("{3}", 
2. 2 NumberFormat.getPercentInstance(), new DecimalFormat("#0.0%"))); 
3. 3 

但是柱体的返回的值是10.1/50.1=20.2%,40.1/50.1=79.8%

这不符合预期目标，所以就去看了一下源码，在StandardCategoryItemLabelGenerator的父类AbstractCategoryItemLabelGenerator中发现有createItemArray这么一个方法：

可以发现柱体的标签值应该是由这个方法进行返回的，因此自己就对StandardCategoryItemLabelGenerator进行了继承，并重写了这个方法。
在ExtendedStandardCategoryItemLabelGeneratory中增加了isPercent作为标签值是显示百分比还是仅仅格式化的判断参数，并重写了createItemArray这个方法。

此时得到的效果如图：

然而，柱体的总值还是没有格式化。再看了一下ExtendedStackedBarRenderer这个类的代码，找到了totalFormat这个属性，将其值赋为new DecimalFormat("#0.0%")。测试：

基本是想要的最终结果,下面是测试代码

1. 1 <dependency> 
2. 2 <groupId>jfree</groupId> 
3. 3 <artifactId>jfreechart</artifactId> 
4. 4 <version>1.0.13</version> 
5. 5 </dependency> 

ExtendedStackedBarRenderer

1. 1package com.springapp.jfreechar; 
2. 2 
3. 3import java.awt.Color; 
4. 4import java.awt.Font; 
5. 5import java.awt.Graphics2D; 
6. 6import java.awt.geom.Rectangle2D; 
7. 7import java.text.DecimalFormat; 
8. 8import java.text.NumberFormat; 
9. 9 
10. 10import org.jfree.chart.axis.CategoryAxis; 
11. 11import org.jfree.chart.axis.ValueAxis; 
12. 12import org.jfree.chart.entity.CategoryItemEntity; 
13. 13import org.jfree.chart.entity.EntityCollection; 
14. 14import org.jfree.chart.labels.CategoryToolTipGenerator; 
15. 15import org.jfree.chart.plot.CategoryPlot; 
16. 16import org.jfree.chart.plot.PlotOrientation; 
17. 17import org.jfree.chart.renderer.category.CategoryItemRendererState; 
18. 18import org.jfree.chart.renderer.category.StackedBarRenderer; 
19. 19import org.jfree.data.category.CategoryDataset; 
20. 20import org.jfree.text.TextUtilities; 
21. 21import org.jfree.ui.TextAnchor; 
22. 22 
23. 23public class ExtendedStackedBarRenderer extends StackedBarRenderer { 
24. 24 
25. 25 private static final long serialVersionUID = 1L; 
26. 26 private boolean showPositiveTotal; 
27. 27 private boolean showNegativeTotal; 
28. 28 private Font totalLabelFont; 
29. 29 private NumberFormat totalFormatter; 
30. 30 public ExtendedStackedBarRenderer() { 
31. 31 showPositiveTotal = true; 
32. 32 showNegativeTotal = true; 
33. 33 totalLabelFont = new Font("SansSerif", 1, 12); 
34. 34 totalFormatter = new DecimalFormat("#0.0%"); 
35. 35 } 
36. 36 
37. 37 /** 
38. 38 * StackedBarRenderer 没有这个构造方法的，传入一个NumberFormat类，可以自定义实现每个柱体值显示格式 
39. 39 * @param totalFormatter 
40. 40 */ 
41. 41 public ExtendedStackedBarRenderer(NumberFormat totalFormatter) { 
42. 42 showPositiveTotal = true; 
43. 43 showNegativeTotal = true; 
44. 44 totalLabelFont = new Font("SansSerif", 1, 12); 
45. 45 this.totalFormatter = totalFormatter; 
46. 46 } 
47. 47 
48. 48 public NumberFormat getTotalFormatter() { 
49. 49 return totalFormatter; 
50. 50 } 
51. 51 
52. 52 public void setTotalFormatter(NumberFormat numberformat) { 
53. 53 if (numberformat == null) { 
54. 54 throw new IllegalArgumentException("Null format not permitted."); 
55. 55 } else { 
56. 56 totalFormatter = numberformat; 
57. 57 return; 
58. 58 } 
59. 59 } 
60. 60 
61. 61 public void drawItem(Graphics2D graphics2d, CategoryItemRendererState categoryitemrendererstate, Rectangle2D rectangle2d, CategoryPlot categoryplot, CategoryAxis categoryaxis, 
62. 62 ValueAxis valueaxis, CategoryDataset categorydataset, int i, int j, int k) { 
63. 63 Number number = categorydataset.getValue(i, j); 
64. 64 if (number == null) 
65. 65 return; 
66. 66 double d = number.doubleValue(); 
67. 67 PlotOrientation plotorientation = categoryplot.getOrientation(); 
68. 68 double d1 = categoryaxis.getCategoryMiddle(j, getColumnCount(), rectangle2d, categoryplot.getDomainAxisEdge()) - categoryitemrendererstate.getBarWidth() / 2D; 
69. 69 double d2 = 0.0D; 
70. 70 double d3 = 0.0D; 
71. 71 for (int l = 0; l < i; l++) { 
72. 72 Number number1 = categorydataset.getValue(l, j); 
73. 73 if (number1 == null) 
74. 74 continue; 
75. 75 double d5 = number1.doubleValue(); 
76. 76 if (d5 > 0.0D) 
77. 77 d2 += d5; 
78. 78 else 
79. 79 d3 += d5; 
80. 80 } 
81. 81 
82. 82 org.jfree.ui.RectangleEdge rectangleedge = categoryplot.getRangeAxisEdge(); 
83. 83 double d4; 
84. 84 double d6; 
85. 85 if (d > 0.0D) { 
86. 86 d4 = valueaxis.valueToJava2D(d2, rectangle2d, rectangleedge); 
87. 87 d6 = valueaxis.valueToJava2D(d2 + d, rectangle2d, rectangleedge); 
88. 88 } else { 
89. 89 d4 = valueaxis.valueToJava2D(d3, rectangle2d, rectangleedge); 
90. 90 d6 = valueaxis.valueToJava2D(d3 + d, rectangle2d, rectangleedge); 
91. 91 } 
92. 92 double d7 = Math.min(d4, d6); 
93. 93 double d8 = Math.max(Math.abs(d6 - d4), getMinimumBarLength()); 
94. 94 Rectangle2D.Double double1 = null; 
95. 95 if (plotorientation == PlotOrientation.HORIZONTAL) 
96. 96 double1 = new Rectangle2D.Double(d7, d1, d8, categoryitemrendererstate.getBarWidth()); 
97. 97 else 
98. 98 double1 = new Rectangle2D.Double(d1, d7, categoryitemrendererstate.getBarWidth(), d8); 
99. 99 java.awt.Paint paint = getItemPaint(i, j); 
100. 100 graphics2d.setPaint(paint); 
101. 101 graphics2d.fill(double1); 
102. 102 if (isDrawBarOutline() && categoryitemrendererstate.getBarWidth() > 3D) { 
103. 103 graphics2d.setStroke(getItemStroke(i, j)); 
104. 104 graphics2d.setPaint(getItemOutlinePaint(i, j)); 
105. 105 graphics2d.draw(double1); 
106. 106 } 
107. 107 org.jfree.chart.labels.CategoryItemLabelGenerator categoryitemlabelgenerator = getItemLabelGenerator(i, j); 
108. 108 if (categoryitemlabelgenerator != null && isItemLabelVisible(i, j)) 
109. 109 drawItemLabel(graphics2d, categorydataset, i, j, categoryplot, categoryitemlabelgenerator, double1, d < 0.0D); 
110. 110 if (d > 0.0D) { 
111. 111 if (showPositiveTotal && isLastPositiveItem(categorydataset, i, j)) { 
112. 112 graphics2d.setPaint(Color.black); 
113. 113 graphics2d.setFont(totalLabelFont); 
114. 114 double d9 = calculateSumOfPositiveValuesForCategory(categorydataset, j); 
115. 115 float f = (float) double1.getCenterX(); 
116. 116 float f2 = (float) double1.getMinY() - 4F; 
117. 117 TextAnchor textanchor = TextAnchor.BOTTOM_CENTER; 
118. 118 if (plotorientation == PlotOrientation.HORIZONTAL) { 
119. 119 f = (float) double1.getMaxX() + 4F; 
120. 120 f2 = (float) double1.getCenterY(); 
121. 121 textanchor = TextAnchor.CENTER_LEFT; 
122. 122 } 
123. 123 TextUtilities.drawRotatedString(totalFormatter.format(d9), graphics2d, f, f2, textanchor, 0.0D, TextAnchor.CENTER); 
124. 124 } 
125. 125 } else if (showNegativeTotal && isLastNegativeItem(categorydataset, i, j)) { 
126. 126 graphics2d.setPaint(Color.black); 
127. 127 graphics2d.setFont(totalLabelFont); 
128. 128 double d10 = calculateSumOfNegativeValuesForCategory(categorydataset, j); 
129. 129 float f1 = (float) double1.getCenterX(); 
130. 130 float f3 = (float) double1.getMaxY() + 4F; 
131. 131 TextAnchor textanchor1 = TextAnchor.TOP_CENTER; 
132. 132 if (plotorientation == PlotOrientation.HORIZONTAL) { 
133. 133 f1 = (float) double1.getMinX() - 4F; 
134. 134 f3 = (float) double1.getCenterY(); 
135. 135 textanchor1 = TextAnchor.CENTER_RIGHT; 
136. 136 } 
137. 137 TextUtilities.drawRotatedString(totalFormatter.format(d10), graphics2d, f1, f3, textanchor1, 0.0D, TextAnchor.CENTER); 
138. 138 } 
139. 139 if (categoryitemrendererstate.getInfo() != null) { 
140. 140 EntityCollection entitycollection = categoryitemrendererstate.getEntityCollection(); 
141. 141 if (entitycollection != null) { 
142. 142 String s = null; 
143. 143 CategoryToolTipGenerator categorytooltipgenerator = getToolTipGenerator(i, j); 
144. 144 if (categorytooltipgenerator != null) 
145. 145 s = categorytooltipgenerator.generateToolTip(categorydataset, i, j); 
146. 146 String s1 = null; 
147. 147 if (getItemURLGenerator(i, j) != null) 
148. 148 s1 = getItemURLGenerator(i, j).generateURL(categorydataset, i, j); 
149. 149 CategoryItemEntity categoryitementity = new CategoryItemEntity(double1, s, s1, categorydataset, categorydataset.getRowKey(i), categorydataset.getColumnKey(j)); 
150. 150 entitycollection.add(categoryitementity); 
151. 151 } 
152. 152 } 
153. 153 } 
154. 154 
155. 155 private boolean isLastPositiveItem(CategoryDataset categorydataset, int i, int j) { 
156. 156 boolean flag = true; 
157. 157 Number number = categorydataset.getValue(i, j); 
158. 158 if (number == null) 
159. 159 return false; 
160. 160 for (int k = i + 1; k < categorydataset.getRowCount(); k++) { 
161. 161 Number number1 = categorydataset.getValue(k, j); 
162. 162 if (number1 != null) 
163. 163 flag = flag && number1.doubleValue() <= 0.0D; 
164. 164 } 
165. 165 
166. 166 return flag; 
167. 167 } 
168. 168 
169. 169 private boolean isLastNegativeItem(CategoryDataset categorydataset, int i, int j) { 
170. 170 boolean flag = true; 
171. 171 Number number = categorydataset.getValue(i, j); 
172. 172 if (number == null) 
173. 173 return false; 
174. 174 for (int k = i + 1; k < categorydataset.getRowCount(); k++) { 
175. 175 Number number1 = categorydataset.getValue(k, j); 
176. 176 if (number1 != null) 
177. 177 flag = flag && number1.doubleValue() >= 0.0D; 
178. 178 } 
179. 179 
180. 180 return flag; 
181. 181 } 
182. 182 
183. 183 private double calculateSumOfPositiveValuesForCategory(CategoryDataset categorydataset, int i) { 
184. 184 double d = 0.0D; 
185. 185 for (int j = 0; j < categorydataset.getRowCount(); j++) { 
186. 186 Number number = categorydataset.getValue(j, i); 
187. 187 if (number == null) 
188. 188 continue; 
189. 189 double d1 = number.doubleValue(); 
190. 190 if (d1 > 0.0D) 
191. 191 d += d1; 
192. 192 } 
193. 193 
194. 194 return d; 
195. 195 } 
196. 196 
197. 197 private double calculateSumOfNegativeValuesForCategory(CategoryDataset categorydataset, int i) { 
198. 198 double d = 0.0D; 
199. 199 for (int j = 0; j < categorydataset.getRowCount(); j++) { 
200. 200 Number number = categorydataset.getValue(j, i); 
201. 201 if (number == null) 
202. 202 continue; 
203. 203 double d1 = number.doubleValue(); 
204. 204 if (d1 < 0.0D) 
205. 205 d += d1; 
206. 206 } 
207. 207 
208. 208 return d; 
209. 209 } 
210. 210 
211. 211} 
212. 212 

ExtendedStandardCategoryItemLabelGeneratory

1. 1package com.springapp.jfreechar; 
2. 2 
3. 3import org.jfree.chart.HashUtilities; 
4. 4import org.jfree.chart.labels.AbstractCategoryItemLabelGenerator; 
5. 5import org.jfree.chart.labels.StandardCategoryItemLabelGenerator; 
6. 6import org.jfree.data.DataUtilities; 
7. 7import org.jfree.data.category.CategoryDataset; 
8. 8import org.jfree.util.ObjectUtilities; 
9. 9import org.jfree.util.PublicCloneable; 
10. 10 
11. 11import java.io.Serializable; 
12. 12import java.text.DateFormat; 
13. 13import java.text.MessageFormat; 
14. 14import java.text.NumberFormat; 
15. 15 
16. 16public class ExtendedStandardCategoryItemLabelGeneratory extends StandardCategoryItemLabelGenerator implements PublicCloneable, Cloneable, Serializable { 
17. 17 
18. 18 private static final long serialVersionUID = -7108591260223293197L; 
19. 19 private String labelFormat; 
20. 20 private String nullValueString; 
21. 21 private NumberFormat numberFormat; 
22. 22 private DateFormat dateFormat; 
23. 23 private NumberFormat percentFormat; 
24. 24 //新增加了参数，柱体series的值是否是总值的百分比，还是仅仅将原来的小数转化为百分数 
25. 25 private boolean isPercent = false; 
26. 26 
27. 27 public ExtendedStandardCategoryItemLabelGeneratory(String labelFormat, NumberFormat formatter, NumberFormat percentFormatter,boolean isPercent){ 
28. 28 super(labelFormat, formatter, percentFormatter); 
29. 29 if(labelFormat == null) { 
30. 30 throw new IllegalArgumentException("Null \'labelFormat\' argument."); 
31. 31 } else if(formatter == null) { 
32. 32 throw new IllegalArgumentException("Null \'formatter\' argument."); 
33. 33 } else if(percentFormatter == null) { 
34. 34 throw new IllegalArgumentException("Null \'percentFormatter\' argument."); 
35. 35 } else { 
36. 36 this.labelFormat = labelFormat; 
37. 37 this.numberFormat = formatter; 
38. 38 this.percentFormat = percentFormatter; 
39. 39 this.dateFormat = null; 
40. 40 this.nullValueString = "-"; 
41. 41 if (isPercent) 
42. 42 this.isPercent = isPercent; 
43. 43 } 
44. 44 
45. 45 } 
46. 46 
47. 47 @Override 
48. 48 protected String generateLabelString(CategoryDataset dataset, int row, int column) { 
49. 49 if(dataset == null) { 
50. 50 throw new IllegalArgumentException("Null \'dataset\' argument."); 
51. 51 } else { 
52. 52 String result = null; 
53. 53 Object[] items = this.createItemArray(dataset, row, column); 
54. 54 result = MessageFormat.format(this.labelFormat, items); 
55. 55 return result; 
56. 56 } 
57. 57 } 
58. 58 @Override 
59. 59 protected Object[] createItemArray(CategoryDataset dataset, int row, int column) { 
60. 60 Object[] result = new Object[]{dataset.getRowKey(row).toString(), dataset.getColumnKey(column).toString(), null, null}; 
61. 61 Number value = dataset.getValue(row, column); 
62. 62 if(value != null) { 
63. 63 if(this.numberFormat != null) { 
64. 64 result[2] = this.numberFormat.format(value); 
65. 65 } else if(this.dateFormat != null) { 
66. 66 result[2] = this.dateFormat.format(value); 
67. 67 } 
68. 68 } else { 
69. 69 result[2] = this.nullValueString; 
70. 70 } 
71. 71 
72. 72 if(value != null) { 
73. 73 double total = DataUtilities.calculateColumnTotal(dataset, column); 
74. 74 // 
75. 75 double percent = 0D;// / total; 
76. 76 if (this.isPercent) 
77. 77 //StandardCategoryItemLabelGenerator 返回的值是百分比 
78. 78 percent = value.doubleValue() / total; 
79. 79 else 
80. 80 //返回自己原来的值 
81. 81 percent = value.doubleValue(); 
82. 82 //格式化 
83. 83 result[3] = this.percentFormat.format(percent); 
84. 84 } 
85. 85 
86. 86 return result; 
87. 87 } 
88. 88 
89. 89 
90. 90} 
91. 91 

StackedBarChartDemo3

1. 1package com.springapp.jfreechar; 
2. 2 
3. 3import java.awt.*; 
4. 4import java.text.DecimalFormat; 
5. 5import java.text.NumberFormat; 
6. 6import java.util.Iterator; 
7. 7 
8. 8import javax.swing.*; 
9. 9 
10. 10import com.sun.javafx.charts.Legend; 
11. 11import org.jfree.chart.*; 
12. 12import org.jfree.chart.axis.*; 
13. 13import org.jfree.chart.labels.*; 
14. 14import org.jfree.chart.plot.CategoryPlot; 
15. 15import org.jfree.chart.plot.PlotOrientation; 
16. 16import org.jfree.chart.title.LegendTitle; 
17. 17import org.jfree.data.category.CategoryDataset; 
18. 18import org.jfree.data.category.DefaultCategoryDataset; 
19. 19import org.jfree.ui.ApplicationFrame; 
20. 20import org.jfree.ui.RectangleEdge; 
21. 21import org.jfree.ui.RefineryUtilities; 
22. 22import org.jfree.ui.TextAnchor; 
23. 23 
24. 24// Referenced classes of package demo: 
25. 25// ExtendedStackedBarRenderer 
26. 26 
27. 27public class StackedBarChartDemo3 extends ApplicationFrame { 
28. 28 
29. 29 private static final long serialVersionUID = 1L; 
30. 30 
31. 31 public StackedBarChartDemo3(String s) { 
32. 32 super(s); 
33. 33 JPanel jpanel = createDemoPanel(); 
34. 34 jpanel.setPreferredSize(new Dimension(500, 270)); 
35. 35 setContentPane(jpanel); 
36. 36 } 
37. 37 
38. 38 private static CategoryDataset createDataset() { 
39. 39 DefaultCategoryDataset defaultcategorydataset = new DefaultCategoryDataset(); 
40. 40 defaultcategorydataset.addValue(.101D, "Series 1", "Cross Contamination (4.3)"); 
41. 41 defaultcategorydataset.addValue(.4D, "Series 2", "Cross Contamination (4.3)"); 
42. 42 return defaultcategorydataset; 
43. 43 } 
44. 44 
45. 45 private static JFreeChart createChart(CategoryDataset categorydataset) { 
46. 46 
47. 47 JFreeChart jfreechart = ChartFactory.createStackedBarChart("Stacked Bar Chart Demo 3", "Category", "Value", categorydataset, PlotOrientation.VERTICAL, true, true, false); 
48. 48 
49. 49 CategoryPlot categoryplot = (CategoryPlot) jfreechart.getPlot(); 
50. 50 //柱体 
51. 51 ExtendedStackedBarRenderer extendedstackedbarrenderer = new ExtendedStackedBarRenderer(new DecimalFormat("#0.0%")); 
52. 52 //柱体标签是否可见 
53. 53 extendedstackedbarrenderer.setBaseItemLabelsVisible(true); 
54. 54 Font labelFont = new Font("Arial", Font.PLAIN, 12); 
55. 55 extendedstackedbarrenderer.setBaseItemLabelPaint(new GradientPaint(0.0f, 0.0f, new Color(255, 255, 255), 0.0f, 0.0f, new Color(0, 0, 0))); 
56. 56 //设置柱体标签值的格式 
57. 57 ExtendedStandardCategoryItemLabelGeneratory generator = new ExtendedStandardCategoryItemLabelGeneratory("{3}", 
58. 58 NumberFormat.getPercentInstance(), new DecimalFormat("#0.0%"),false); 
59. 59 extendedstackedbarrenderer.setBaseItemLabelGenerator(generator); 
60. 60 //自定义柱体颜色 
61. 61 Paint p0 = new GradientPaint(0.0f, 0.0f, new Color(237, 125, 49), 0.0f, 0.0f, new Color(237, 125, 49)); 
62. 62 extendedstackedbarrenderer.setSeriesPaint(0, p0); 
63. 63 Paint p1 = new GradientPaint(0.0f, 0.0f, new Color(91, 155, 213), 0.0f, 0.0f, new Color(91, 155, 213)); 
64. 64 extendedstackedbarrenderer.setSeriesPaint(1, p1); 
65. 65 
66. 66 categoryplot.setRenderer(extendedstackedbarrenderer); 
67. 67 
68. 68 //Y 轴 
69. 69 NumberAxis numberaxis = (NumberAxis) categoryplot.getRangeAxis(); 
70. 70 //不设置是自动显示步长 
71. 71 numberaxis.setTickUnit(new NumberTickUnit(0.05)); 
72. 72 numberaxis.setLowerMargin(0.14999999999999999D); 
73. 73 numberaxis.setUpperMargin(0.14999999999999999D); 
74. 74 //设置是否是百分率 
75. 75 numberaxis.setNumberFormatOverride(NumberFormat.getPercentInstance()); 
76. 76 
77. 77 //X 辆 
78. 78 CategoryAxis categoryAxis = categoryplot.getDomainAxis(); 
79. 79 //x轴旋转 
80. 80 categoryAxis.setCategoryLabelPositions(CategoryLabelPositions.createUpRotationLabelPositions(Math.PI / 6.0)); 
81. 81 
82. 82 //标注 
83. 83 LegendTitle legendtitle = (LegendTitle)jfreechart.getLegend(); 
84. 84 legendtitle.setBorder(0, 0, 0, 0); 
85. 85 return jfreechart; 
86. 86 } 
87. 87 
88. 88 public static JPanel createDemoPanel() { 
89. 89 JFreeChart jfreechart = createChart(createDataset()); 
90. 90 return new ChartPanel(jfreechart); 
91. 91 } 
92. 92 
93. 93 public static void main(String args[]) { 
94. 94 StackedBarChartDemo3 stackedbarchartdemo3 = new StackedBarChartDemo3("Stacked Bar Chart Demo 3"); 
95. 95 stackedbarchartdemo3.pack(); 
96. 96 RefineryUtilities.centerFrameOnScreen(stackedbarchartdemo3); 
97. 97 stackedbarchartdemo3.setVisible(true); 
98. 98 } 
99. 99} 
100. 100 
101. 101