Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/jfree/EnhancedLineAndShapeRenderer.java @ 2643:d6794864a4b8

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Added accidentally ommitted ChangeLog entry for last commit. flys-artifacts/trunk@4298 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Felix Wolfsteller <felix.wolfsteller@intevation.de>
date Wed, 25 Apr 2012 14:41:01 +0000
parents 42b05a4bed25
children 0a84313efe60
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:
diff changeset
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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42b05a4bed25 Cosmetics, added doc, TODO and OPTIMIZE to Enhanced*Renderer.
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 2591
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24 /**
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25 * Renderer with additional functionality.
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26 */
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27 public class EnhancedLineAndShapeRenderer extends XYLineAndShapeRenderer {
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28
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29 private static final Logger logger =
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30 Logger.getLogger(EnhancedLineAndShapeRenderer.class);
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31
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32 protected BooleanList isMinimumShapeVisible;
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33 protected BooleanList isMaximumShapeVisible;
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34
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35 protected Map<Integer, Double> seriesMinimum;
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36 protected Map<Integer, Double> seriesMaximum;
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37
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38
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39 public EnhancedLineAndShapeRenderer(boolean lines, boolean shapes) {
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40 super(lines, shapes);
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41 this.isMinimumShapeVisible = new BooleanList();
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42 this.isMaximumShapeVisible = new BooleanList();
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43 this.seriesMinimum = new HashMap<Integer, Double>();
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44 this.seriesMaximum = new HashMap<Integer, Double>();
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45 }
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46
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47
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48 public boolean getItemShapeVisible(XYDataset dataset, int series, int item){
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49 if (super.getItemShapeVisible(series, item)) {
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50 return true;
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51 }
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52
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53 if (isMinimumShapeVisible(series) && isMinimum(dataset, series, item)) {
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54 return true;
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55 }
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56
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57 if (isMaximumShapeVisible(series) && isMaximum(dataset, series, item)) {
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58 return true;
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59 }
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60
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61 return false;
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62 }
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63
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64
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65 public Shape getMaximumShape(int series, int column) {
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66 return new Rectangle2D.Double(-5d, -5d, 10d, 10d);
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67 }
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68
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69
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70 public Shape getMinimumShape(int series, int column) {
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71 return new Rectangle2D.Double(-5d, -5d, 10d, 10d);
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72 }
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73
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74
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75 public Paint getMaximumFillPaint(int series, int column) {
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76 Paint p = getItemPaint(series, column);
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77
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78 if (p instanceof Color) {
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79 Color c = (Color) p;
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80 Color b = c;
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81
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82 for (int i = 0; i < 2; i++) {
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83 b = b.darker();
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84 }
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85
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86 return b;
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87 }
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88
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89 logger.warn("Item paint is no instance of Color!");
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90 return p;
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91 }
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92
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93
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94 public Paint getMinimumFillPaint(int series, int column) {
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95 Paint p = getItemPaint(series, column);
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96
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97 if (p instanceof Color) {
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98 Color c = (Color) p;
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99 Color b = c;
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100
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101 for (int i = 0; i < 2; i++) {
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102 b = b.darker();
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103 }
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104
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105 return b;
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106 }
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107
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108 logger.warn("Item paint is no instance of Color!");
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109 return p;
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110 }
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111
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112
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113 /**
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114 * Overrides XYLineAndShapeRenderer.drawSecondaryPass() to call an adapted
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115 * method getItemShapeVisible() which now takes an XYDataset. So, 99% of
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116 * code equal the code in XYLineAndShapeRenderer.
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117 */
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118 @Override
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119 protected void drawSecondaryPass(
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120 Graphics2D g2,
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121 XYPlot plot,
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122 XYDataset dataset,
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123 int pass,
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124 int series,
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125 int item,
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126 ValueAxis domainAxis,
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127 Rectangle2D dataArea,
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128 ValueAxis rangeAxis,
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129 CrosshairState crosshairState,
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130 EntityCollection entities
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131 ) {
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132 Shape entityArea = null;
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133
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134 // get the data point...
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135 double x1 = dataset.getXValue(series, item);
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136 double y1 = dataset.getYValue(series, item);
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137 if (Double.isNaN(y1) || Double.isNaN(x1)) {
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138 return;
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139 }
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140
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141 PlotOrientation orientation = plot.getOrientation();
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142 RectangleEdge xAxisLocation = plot.getDomainAxisEdge();
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143 RectangleEdge yAxisLocation = plot.getRangeAxisEdge();
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144 double transX1 = domainAxis.valueToJava2D(x1, dataArea, xAxisLocation);
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145 double transY1 = rangeAxis.valueToJava2D(y1, dataArea, yAxisLocation);
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146
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147 if (getItemShapeVisible(dataset, series, item)) {
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148 Shape shape = null;
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149
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150 // OPTIMIZE instead of calculating minimum and maximum for every
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151 // point, calculate it just once (assume that dataset
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152 // content does not change during rendering).
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153 boolean isMinimum = isMinimumShapeVisible(series)
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154 && isMinimum(dataset, series, item);
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155
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156 boolean isMaximum = isMaximumShapeVisible(series)
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157 && isMaximum(dataset, series, item);
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158
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159 if (isMinimum) {
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160 logger.debug("Create a Minimum shape.");
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161 shape = getMinimumShape(series, item);
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162 }
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163 else if (isMaximum) {
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164 logger.debug("Create a Maximum shape.");
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165 shape = getMaximumShape(series, item);
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166 }
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167 else {
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168 shape = getItemShape(series, item);
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169 }
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170
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171 if (orientation == PlotOrientation.HORIZONTAL) {
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172 shape = ShapeUtilities.createTranslatedShape(shape, transY1,
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173 transX1);
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174 }
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175 else if (orientation == PlotOrientation.VERTICAL) {
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176 shape = ShapeUtilities.createTranslatedShape(shape, transX1,
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177 transY1);
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178 }
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179 entityArea = shape;
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180 if (shape.intersects(dataArea)) {
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181 if (getItemShapeFilled(series, item)) {
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182 if (getUseFillPaint()) {
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183 g2.setPaint(getItemFillPaint(series, item));
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184 }
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185 else {
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186 g2.setPaint(getItemPaint(series, item));
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187 }
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188 g2.fill(shape);
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189 }
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190 if (getDrawOutlines()) {
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191 if (getUseOutlinePaint()) {
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192 g2.setPaint(getItemOutlinePaint(series, item));
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193 }
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194 else {
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195 g2.setPaint(getItemPaint(series, item));
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196 }
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197 g2.setStroke(getItemOutlineStroke(series, item));
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198 g2.draw(shape);
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199 }
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200
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201 if (isMinimum) {
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202 g2.setPaint(getMinimumFillPaint(series, item));
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203 g2.fill(shape);
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204 g2.setPaint(getItemOutlinePaint(series, item));
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205 g2.setStroke(getItemOutlineStroke(series, item));
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206 g2.draw(shape);
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207 }
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208 else if (isMaximum) {
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209 g2.setPaint(getMaximumFillPaint(series, item));
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210 g2.fill(shape);
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211 g2.setPaint(getItemOutlinePaint(series, item));
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212 g2.setStroke(getItemOutlineStroke(series, item));
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213 g2.draw(shape);
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214 }
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215 }
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216 // TODO labeling of waterlevels could happen here, too.
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217 }
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218
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219 double xx = transX1;
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220 double yy = transY1;
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221 if (orientation == PlotOrientation.HORIZONTAL) {
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222 xx = transY1;
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223 yy = transX1;
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224 }
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225
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226 // draw the item label if there is one...
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227 if (isItemLabelVisible(series, item)) {
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228 drawItemLabel(g2, orientation, dataset, series, item, xx, yy,
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229 (y1 < 0.0));
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230 }
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231
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232 int domainAxisIndex = plot.getDomainAxisIndex(domainAxis);
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233 int rangeAxisIndex = plot.getRangeAxisIndex(rangeAxis);
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234 updateCrosshairValues(crosshairState, x1, y1, domainAxisIndex,
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235 rangeAxisIndex, transX1, transY1, orientation);
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236
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237 // add an entity for the item, but only if it falls within the data
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238 // area...
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239 if (entities != null && isPointInRect(dataArea, xx, yy)) {
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240 addEntity(entities, entityArea, dataset, series, item, xx, yy);
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241 }
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242 }
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243
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244
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245 public void setIsMinimumShapeVisisble(int series, boolean isVisible) {
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246 this.isMinimumShapeVisible.setBoolean(series, isVisible);
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247 }
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248
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249
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250 public boolean isMinimumShapeVisible(int series) {
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251 if (this.isMinimumShapeVisible.size() <= series) {
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252 return false;
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253 }
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254
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255 return isMinimumShapeVisible.getBoolean(series);
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256 }
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257
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258
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259 public void setIsMaximumShapeVisible(int series, boolean isVisible) {
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260 this.isMaximumShapeVisible.setBoolean(series, isVisible);
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261 }
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262
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263
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264 public boolean isMaximumShapeVisible(int series) {
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265 if (this.isMaximumShapeVisible.size() <= series) {
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266 return false;
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267 }
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268
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269 return isMaximumShapeVisible.getBoolean(series);
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270 }
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271
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272
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273 public boolean isMinimum(XYDataset dataset, int series, int item) {
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274 return dataset.getYValue(series, item) == getMinimum(dataset, series);
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275 }
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276
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277
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278 public double getMinimum(XYDataset dataset, int series) {
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279 Integer key = Integer.valueOf(series);
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280 Double old = seriesMinimum.get(key);
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281
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282 if (old != null) {
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283 return old.doubleValue();
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284 }
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285
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286 logger.debug("Compute minimum of Series: " + series);
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287
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288 double min = Double.MAX_VALUE;
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289
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290 for (int i = 0, n = dataset.getItemCount(series); i < n; i++) {
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291 double tmpValue = dataset.getYValue(series, i);
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292
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293 if (tmpValue < min) {
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294 min = tmpValue;
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295 }
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296 }
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297
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298 seriesMinimum.put(key, Double.valueOf(min));
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299
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300 return min;
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301 }
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302
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303
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304 public boolean isMaximum(XYDataset dataset, int series, int item) {
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305 return dataset.getYValue(series, item) == getMaximum(dataset, series);
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306 }
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307
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308
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309 public double getMaximum(XYDataset dataset, int series) {
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310 Integer key = Integer.valueOf(series);
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311 Double old = seriesMaximum.get(key);
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312
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313 if (old != null) {
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314 return old.doubleValue();
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315 }
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316
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317 logger.debug("Compute maximum of Series: " + series);
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318
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319 double max = -Double.MAX_VALUE;
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320
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321 for (int i = 0, n = dataset.getItemCount(series); i < n; i++) {
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322 double tmpValue = dataset.getYValue(series, i);
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323
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324 if (tmpValue > max) {
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325 max = tmpValue;
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326 }
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327 }
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328
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329 seriesMaximum.put(key, Double.valueOf(max));
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330
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331 return max;
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332 }
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333 }
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334 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org