Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/jfree/XYDatasetToZeroMapper.java @ 1824:982956bde69e

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Added a dataset to zero mapper to circumvent shortcommings in XYDifferenceRenderer. flys-artifacts/trunk@3153 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Thu, 03 Nov 2011 12:28:38 +0000
parents
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rev   line source
1824
982956bde69e Added a dataset to zero mapper to circumvent shortcommings in XYDifferenceRenderer.
Sascha L. Teichmann <sascha.teichmann@intevation.de>
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1 package de.intevation.flys.jfree;
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2
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3 import java.util.Iterator;
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4 import java.util.List;
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5 import java.util.ArrayList;
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6
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7 import org.jfree.data.xy.XYDataset;
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8
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9 import org.jfree.data.general.DatasetChangeListener;
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10 import org.jfree.data.general.DatasetGroup;
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11
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12 import org.jfree.data.DomainOrder;
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13
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14 import java.io.Serializable;
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15
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16 public class XYDatasetToZeroMapper
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17 implements Serializable
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18 {
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19 protected int seriesA;
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20 protected int seriesB;
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21
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22 public class MappedXYDataset implements XYDataset, Serializable {
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23
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24 protected XYDataset parent;
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25
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26 public MappedXYDataset() {
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27 }
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28
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29 public MappedXYDataset(XYDataset parent) {
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30 this.parent = parent;
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31 }
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32
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33 protected int remap(int series) {
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34 switch (series) {
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35 case 0: return seriesA;
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36 case 1: return seriesB;
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37 }
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38 return series;
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39 }
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40
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41 @Override
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42 public int getSeriesCount() {
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43 return seriesA != seriesB ? 2 : 1;
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44 }
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45
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46 @Override
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47 public Comparable getSeriesKey(int series) {
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48 return parent.getSeriesKey(remap(series));
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49 }
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50
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51 @Override
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52 public int indexOf(Comparable seriesKey) {
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53 Comparable cmpA = parent.getSeriesKey(seriesA);
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54 if (cmpA == seriesKey
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55 || (cmpA != null && cmpA.equals(seriesKey))) {
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56 return 0;
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57 }
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58 Comparable cmpB = parent.getSeriesKey(seriesB);
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59 if (cmpB == seriesKey
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60 || (cmpB != null && cmpB.equals(seriesKey))) {
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61 return 1;
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62 }
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63 return -1;
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64 }
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65
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66 @Override
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67 public void addChangeListener(DatasetChangeListener listener) {
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68 parent.addChangeListener(listener);
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69 }
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70
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71 @Override
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72 public void removeChangeListener(DatasetChangeListener listener) {
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73 parent.removeChangeListener(listener);
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74 }
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75
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76 @Override
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77 public DatasetGroup getGroup() {
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78 return parent.getGroup();
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79 }
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80
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81 @Override
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82 public void setGroup(DatasetGroup group) {
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83 parent.setGroup(group);
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84 }
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85
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86 @Override
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87 public DomainOrder getDomainOrder() {
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88 return parent.getDomainOrder();
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89 }
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90
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91 @Override
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92 public int getItemCount(int series) {
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93 return parent.getItemCount(remap(series));
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94 }
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95
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96 @Override
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97 public Number getX(int series, int item) {
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98 return parent.getX(remap(series), item);
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99 }
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100
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101 @Override
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102 public double getXValue(int series, int item) {
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103 return parent.getXValue(remap(series), item);
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104 }
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105
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106 @Override
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107 public Number getY(int series, int item) {
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108 return parent.getY(remap(series), item);
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109 }
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110
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111 @Override
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112 public double getYValue(int series, int item) {
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113 return parent.getYValue(remap(series), item);
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114 }
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115 } // class MappedXYDataset
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116
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117 public XYDatasetToZeroMapper() {
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118 }
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119
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120 public XYDatasetToZeroMapper(int seriesA) {
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121 this(seriesA, seriesA);
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122 }
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123
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124 public XYDatasetToZeroMapper(int seriesA, int seriesB) {
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125 this.seriesA = seriesA;
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126 this.seriesB = seriesB;
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127 }
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128
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129 public Iterator<XYDataset> iterator(XYDataset dataset) {
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130 List<XYDataset> list = new ArrayList<XYDataset>(1);
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131 list.add(new MappedXYDataset(dataset));
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132 return list.iterator();
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133 }
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134 }
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135 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org