Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/jfree/EnhancedLineAndShapeRenderer.java @ 2605:15a3684c6bce

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#366 Display correct descriptions in legend panel of charts. flys-artifacts/trunk@4183 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Ingo Weinzierl <ingo.weinzierl@intevation.de>
date Thu, 29 Mar 2012 11:09:26 +0000
parents 74c02dbf17ca
children 42b05a4bed25
rev   line source
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a026d005accd Moved JFreeChart specific classes to de.intevation.flys.jfree and added required imports.
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parents:
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1 package de.intevation.flys.jfree;
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2
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3 import java.awt.Color;
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4 import java.awt.Graphics2D;
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5 import java.awt.Paint;
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6 import java.awt.Shape;
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7 import java.awt.geom.Rectangle2D;
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8 import java.util.HashMap;
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9 import java.util.Map;
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10
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11 import org.apache.log4j.Logger;
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12
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13 import org.jfree.chart.axis.ValueAxis;
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14 import org.jfree.chart.entity.EntityCollection;
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15 import org.jfree.chart.plot.CrosshairState;
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16 import org.jfree.chart.plot.PlotOrientation;
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17 import org.jfree.chart.plot.XYPlot;
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18 import org.jfree.chart.renderer.xy.XYLineAndShapeRenderer;
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19 import org.jfree.data.xy.XYDataset;
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20 import org.jfree.ui.RectangleEdge;
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21 import org.jfree.util.BooleanList;
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22 import org.jfree.util.ShapeUtilities;
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23
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24
a026d005accd Moved JFreeChart specific classes to de.intevation.flys.jfree and added required imports.
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25 public class EnhancedLineAndShapeRenderer extends XYLineAndShapeRenderer {
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26
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27 private static final Logger logger =
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28 Logger.getLogger(EnhancedLineAndShapeRenderer.class);
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29
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30 protected BooleanList isMinimumShapeVisible;
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31 protected BooleanList isMaximumShapeVisible;
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32
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33 protected Map<Integer, Double> seriesMinimum;
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34 protected Map<Integer, Double> seriesMaximum;
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35
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36
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37 public EnhancedLineAndShapeRenderer(boolean lines, boolean shapes) {
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38 super(lines, shapes);
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39 this.isMinimumShapeVisible = new BooleanList();
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40 this.isMaximumShapeVisible = new BooleanList();
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41 this.seriesMinimum = new HashMap<Integer, Double>();
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42 this.seriesMaximum = new HashMap<Integer, Double>();
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43 }
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44
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45
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46 public boolean getItemShapeVisible(XYDataset dataset, int series, int item){
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47 if (super.getItemShapeVisible(series, item)) {
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48 return true;
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49 }
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50
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51 if (isMinimumShapeVisible(series) && isMinimum(dataset, series, item)) {
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52 return true;
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53 }
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54
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55 if (isMaximumShapeVisible(series) && isMaximum(dataset, series, item)) {
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56 return true;
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57 }
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58
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59 return false;
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60 }
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61
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62
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63 public Shape getMaximumShape(int series, int column) {
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64 return new Rectangle2D.Double(-5d, -5d, 10d, 10d);
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65 }
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66
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67
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68 public Shape getMinimumShape(int series, int column) {
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69 return new Rectangle2D.Double(-5d, -5d, 10d, 10d);
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70 }
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71
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72
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73 public Paint getMaximumFillPaint(int series, int column) {
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74 Paint p = getItemPaint(series, column);
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75
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76 if (p instanceof Color) {
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77 Color c = (Color) p;
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78 Color b = c;
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79
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80 for (int i = 0; i < 2; i++) {
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81 b = b.darker();
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82 }
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83
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84 return b;
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85 }
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86
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87 logger.warn("Item paint is no instance of Color!");
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88 return p;
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89 }
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90
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91
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92 public Paint getMinimumFillPaint(int series, int column) {
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93 Paint p = getItemPaint(series, column);
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94
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95 if (p instanceof Color) {
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96 Color c = (Color) p;
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97 Color b = c;
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98
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99 for (int i = 0; i < 2; i++) {
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100 b = b.darker();
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101 }
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102
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103 return b;
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104 }
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105
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106 logger.warn("Item paint is no instance of Color!");
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107 return p;
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108 }
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109
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110
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111 /**
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112 * Overrides XYLineAndShapeRenderer.drawSecondaryPass() to call an adapted
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113 * method getItemShapeVisible() which now takes an XYDataset. So, 99% of
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114 * code equal the code in XYLineAndShapeRenderer.
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115 */
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116 @Override
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117 protected void drawSecondaryPass(
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118 Graphics2D g2,
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119 XYPlot plot,
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120 XYDataset dataset,
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121 int pass,
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122 int series,
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123 int item,
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124 ValueAxis domainAxis,
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125 Rectangle2D dataArea,
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126 ValueAxis rangeAxis,
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127 CrosshairState crosshairState,
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128 EntityCollection entities
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129 ) {
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130 Shape entityArea = null;
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131
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132 // get the data point...
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133 double x1 = dataset.getXValue(series, item);
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134 double y1 = dataset.getYValue(series, item);
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135 if (Double.isNaN(y1) || Double.isNaN(x1)) {
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136 return;
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137 }
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138
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139 PlotOrientation orientation = plot.getOrientation();
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140 RectangleEdge xAxisLocation = plot.getDomainAxisEdge();
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141 RectangleEdge yAxisLocation = plot.getRangeAxisEdge();
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142 double transX1 = domainAxis.valueToJava2D(x1, dataArea, xAxisLocation);
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143 double transY1 = rangeAxis.valueToJava2D(y1, dataArea, yAxisLocation);
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144
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145 if (getItemShapeVisible(dataset, series, item)) {
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146 Shape shape = null;
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147
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148 boolean isMinimum = isMinimumShapeVisible(series)
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149 && isMinimum(dataset, series, item);
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150
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151 boolean isMaximum = isMaximumShapeVisible(series)
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152 && isMaximum(dataset, series, item);
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153
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154 if (isMinimum) {
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155 logger.debug("Create a Minimum shape.");
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156 shape = getMinimumShape(series, item);
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157 }
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158 else if (isMaximum) {
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159 logger.debug("Create a Maximum shape.");
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160 shape = getMaximumShape(series, item);
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161 }
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162 else {
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163 shape = getItemShape(series, item);
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164 }
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165
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166 if (orientation == PlotOrientation.HORIZONTAL) {
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167 shape = ShapeUtilities.createTranslatedShape(shape, transY1,
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168 transX1);
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169 }
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170 else if (orientation == PlotOrientation.VERTICAL) {
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171 shape = ShapeUtilities.createTranslatedShape(shape, transX1,
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172 transY1);
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173 }
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174 entityArea = shape;
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175 if (shape.intersects(dataArea)) {
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176 if (getItemShapeFilled(series, item)) {
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177 if (getUseFillPaint()) {
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178 g2.setPaint(getItemFillPaint(series, item));
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179 }
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180 else {
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181 g2.setPaint(getItemPaint(series, item));
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182 }
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183 g2.fill(shape);
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184 }
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185 if (getDrawOutlines()) {
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186 if (getUseOutlinePaint()) {
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187 g2.setPaint(getItemOutlinePaint(series, item));
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188 }
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189 else {
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190 g2.setPaint(getItemPaint(series, item));
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191 }
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192 g2.setStroke(getItemOutlineStroke(series, item));
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193 g2.draw(shape);
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194 }
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195
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196 if (isMinimum) {
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197 g2.setPaint(getMinimumFillPaint(series, item));
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198 g2.fill(shape);
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199 g2.setPaint(getItemOutlinePaint(series, item));
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200 g2.setStroke(getItemOutlineStroke(series, item));
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201 g2.draw(shape);
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202 }
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203 else if (isMaximum) {
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204 g2.setPaint(getMaximumFillPaint(series, item));
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205 g2.fill(shape);
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206 g2.setPaint(getItemOutlinePaint(series, item));
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207 g2.setStroke(getItemOutlineStroke(series, item));
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208 g2.draw(shape);
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209 }
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210 }
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211 }
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212
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213 double xx = transX1;
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214 double yy = transY1;
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215 if (orientation == PlotOrientation.HORIZONTAL) {
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216 xx = transY1;
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217 yy = transX1;
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218 }
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219
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220 // draw the item label if there is one...
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221 if (isItemLabelVisible(series, item)) {
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222 drawItemLabel(g2, orientation, dataset, series, item, xx, yy,
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223 (y1 < 0.0));
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224 }
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225
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226 int domainAxisIndex = plot.getDomainAxisIndex(domainAxis);
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227 int rangeAxisIndex = plot.getRangeAxisIndex(rangeAxis);
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228 updateCrosshairValues(crosshairState, x1, y1, domainAxisIndex,
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229 rangeAxisIndex, transX1, transY1, orientation);
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230
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231 // add an entity for the item, but only if it falls within the data
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232 // area...
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233 if (entities != null && isPointInRect(dataArea, xx, yy)) {
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234 addEntity(entities, entityArea, dataset, series, item, xx, yy);
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235 }
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236 }
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237
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238
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239 public void setIsMinimumShapeVisisble(int series, boolean isVisible) {
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240 this.isMinimumShapeVisible.setBoolean(series, isVisible);
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241 }
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242
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243
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244 public boolean isMinimumShapeVisible(int series) {
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245 if (this.isMinimumShapeVisible.size() <= series) {
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246 return false;
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247 }
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248
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249 return isMinimumShapeVisible.getBoolean(series);
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250 }
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251
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252
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253 public void setIsMaximumShapeVisible(int series, boolean isVisible) {
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254 this.isMaximumShapeVisible.setBoolean(series, isVisible);
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255 }
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256
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257
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258 public boolean isMaximumShapeVisible(int series) {
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259 if (this.isMaximumShapeVisible.size() <= series) {
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260 return false;
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261 }
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262
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263 return isMaximumShapeVisible.getBoolean(series);
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264 }
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265
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266
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267 public boolean isMinimum(XYDataset dataset, int series, int item) {
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268 return dataset.getYValue(series, item) == getMinimum(dataset, series);
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269 }
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270
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271
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272 public double getMinimum(XYDataset dataset, int series) {
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273 Integer key = Integer.valueOf(series);
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274 Double old = seriesMinimum.get(key);
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275
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276 if (old != null) {
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277 return old.doubleValue();
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278 }
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279
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280 logger.debug("Compute minimum of Series: " + series);
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281
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282 double min = Double.MAX_VALUE;
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283
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284 for (int i = 0, n = dataset.getItemCount(series); i < n; i++) {
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285 double tmpValue = dataset.getYValue(series, i);
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286
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287 if (tmpValue < min) {
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288 min = tmpValue;
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289 }
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290 }
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291
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292 seriesMinimum.put(key, Double.valueOf(min));
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293
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294 return min;
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295 }
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296
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297
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298 public boolean isMaximum(XYDataset dataset, int series, int item) {
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299 return dataset.getYValue(series, item) == getMaximum(dataset, series);
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300 }
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301
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302
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303 public double getMaximum(XYDataset dataset, int series) {
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304 Integer key = Integer.valueOf(series);
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305 Double old = seriesMaximum.get(key);
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306
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307 if (old != null) {
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308 return old.doubleValue();
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309 }
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310
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311 logger.debug("Compute maximum of Series: " + series);
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312
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313 double max = -Double.MAX_VALUE;
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314
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315 for (int i = 0, n = dataset.getItemCount(series); i < n; i++) {
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316 double tmpValue = dataset.getYValue(series, i);
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317
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318 if (tmpValue > max) {
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319 max = tmpValue;
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320 }
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321 }
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322
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323 seriesMaximum.put(key, Double.valueOf(max));
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324
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325 return max;
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326 }
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327 }
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328 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org