Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/jfree/AnnotationHelper.java @ 8202:e4606eae8ea5

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sed src/**/*.java 's/logger/log/g'
author Sascha L. Teichmann <teichmann@intevation.de>
date Fri, 05 Sep 2014 12:58:17 +0200
parents 432addd00687
children c086b06b81e5
rev   line source
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1 /* Copyright (C) 2011, 2012, 2013 by Bundesanstalt für Gewässerkunde
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2 * Software engineering by Intevation GmbH
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3 *
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4 * This file is Free Software under the GNU AGPL (>=v3)
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5 * and comes with ABSOLUTELY NO WARRANTY! Check out the
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6 * documentation coming with Dive4Elements River for details.
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7 */
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8 package org.dive4elements.river.jfree;
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9
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10 import org.dive4elements.river.themes.ThemeDocument;
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11
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12 import java.util.List;
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13 import java.util.Map;
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14
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15 import java.awt.BasicStroke;
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16 import java.awt.Color;
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17 import java.awt.Font;
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18
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19 import org.jfree.ui.TextAnchor;
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20 import org.jfree.chart.plot.XYPlot;
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21 import org.jfree.chart.LegendItem;
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22 import org.jfree.chart.LegendItemCollection;
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23 import org.jfree.chart.annotations.XYTextAnnotation;
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24 import org.jfree.chart.annotations.XYLineAnnotation;
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25
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26 import org.dive4elements.river.themes.LineStyle;
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27 import org.dive4elements.river.themes.TextStyle;
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28 import org.dive4elements.river.exports.ChartSettings;
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29 import org.dive4elements.river.exports.LegendSection;
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30 import org.dive4elements.river.exports.ChartArea;
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31
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32 import org.apache.log4j.Logger;
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33
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34 /** Annotation helper class, handles plotting of annotations. */
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35 public class AnnotationHelper {
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36 private static final Logger log = Logger.getLogger(AnnotationHelper.class);
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37
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38 protected static float ANNOTATIONS_AXIS_OFFSET = 0.02f;
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39
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40 /* arr this would be better in chartsettings */
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41 public static final int DEFAULT_FONT_SIZE = 12;
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42 public static final String DEFAULT_FONT_NAME = "Tahoma";
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43
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44 /**
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45 * Add annotations (Sticky, Text and hyk zones) to a plot.
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46 * @param annotations Annotations to add
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47 * @param plot Plot to add annotations to.
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48 * @param settings ChartSettings object for settings.
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49 */
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50 public static void addAnnotationsToRenderer(List<RiverAnnotation> annotations,
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51 XYPlot plot, ChartSettings settings, Map<Integer, AxisDataset> datasets) {
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52 log.debug("addAnnotationsToRenderer");
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53
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54 if (annotations == null || annotations.isEmpty()) {
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55 log.debug("addAnnotationsToRenderer: no annotations.");
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56 return;
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57 }
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58
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59 // OPTMIMIZE: Pre-calculate positions
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60 ChartArea area = new ChartArea(
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61 plot.getDomainAxis(0).getRange(),
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62 plot.getRangeAxis().getRange());
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63
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64 // Walk over all Annotation sets.
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65 for (RiverAnnotation fa: annotations) {
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66
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67 // Access text styling, if any.
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68 ThemeDocument theme = fa.getTheme();
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69 TextStyle textStyle = null;
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70 LineStyle lineStyle = null;
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71
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72 // Get Themeing information and add legend item.
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73 if (theme != null) {
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74 textStyle = theme.parseComplexTextStyle();
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75 lineStyle = theme.parseComplexLineStyle();
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76 if (fa.getLabel() != null) {
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77 // Legend handling, maybe misplaced?
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78 LegendItemCollection lic = new LegendItemCollection();
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79 LegendItemCollection old = plot.getFixedLegendItems();
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80
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81 Color color = theme.parseLineColorField();
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82 if (color == null) {
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83 color = Color.BLACK;
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84 }
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85
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86 Color textColor = theme.parseTextColor();
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87 if (textColor == null) {
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88 textColor = Color.BLACK;
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89 }
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90
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91 LegendItem newItem = new LegendItem(fa.getLabel(), color);
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92 LegendSection ls = (settings != null ?
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93 settings.getLegendSection() : null);
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94 newItem.setLabelFont (new Font(
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95 DEFAULT_FONT_NAME,
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96 Font.PLAIN,
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97 ls != null ? ls.getFontSize() : null)
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98 );
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99
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100 newItem.setLabelPaint(textColor);
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101
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102 lic.add(newItem);
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103 // (Re-)Add prior legend entries.
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104 if (old != null) {
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105 old.addAll(lic);
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106 }
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107 else {
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108 old = lic;
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109 }
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110 plot.setFixedLegendItems(old);
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111 }
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112 }
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113
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114 // The 'Sticky' Annotations (at axis, with line and text).
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115 for (StickyAxisAnnotation sta: fa.getAxisTextAnnotations()) {
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116 addStickyAnnotation(
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117 sta, plot, area, lineStyle, textStyle, theme,
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118 datasets.get(new Integer(sta.getAxisSymbol())));
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119 }
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120
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121 // Other Text Annotations (e.g. labels of (manual) points).
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122 for (XYTextAnnotation ta: fa.getTextAnnotations()) {
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123 // Style the text.
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124 if (textStyle != null) {
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125 textStyle.apply(ta);
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126 }
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127 ta.setY(area.above(0.05d, ta.getY()));
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128 plot.getRenderer().addAnnotation(ta, org.jfree.ui.Layer.FOREGROUND);
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129 }
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130 }
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131 }
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132
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133 /**
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134 * Add a text and a line annotation.
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135 * @param area convenience to determine positions in plot.
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136 * @param theme (optional) theme document
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137 */
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138 public static void addStickyAnnotation(
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139 StickyAxisAnnotation annotation,
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140 XYPlot plot,
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141 ChartArea area,
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142 LineStyle lineStyle,
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143 TextStyle textStyle,
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144 ThemeDocument theme,
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145 AxisDataset dataset
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146 ) {
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147 // OPTIMIZE pre-calculate area-related values
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148 final float TEXT_OFF = 0.03f;
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149
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150 XYLineAnnotation lineAnnotation = null;
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151 XYTextAnnotation textAnnotation = null;
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152
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153 int rendererIndex = 0;
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154
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155 if (annotation.atX()) {
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156 textAnnotation = new CollisionFreeXYTextAnnotation(
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157 annotation.getText(), annotation.getPos(), area.ofGround(TEXT_OFF));
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158 // OPTIMIZE externalize the calculation involving PI.
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159 //textAnnotation.setRotationAngle(270f*Math.PI/180f);
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160 lineAnnotation = createGroundStickAnnotation(
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161 area, annotation.getPos(), lineStyle);
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162 textAnnotation.setRotationAnchor(TextAnchor.CENTER_LEFT);
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163 textAnnotation.setTextAnchor(TextAnchor.CENTER_LEFT);
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164 }
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165 else {
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166 // Do the more complicated case where we stick to the Y-Axis.
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167 // There is one nasty case (duration curves, where annotations
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168 // might stick to the second y-axis).
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169 if (dataset == null) {
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170 log.warn("Annotation should stick to unfindable y-axis: "
7043
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171 + annotation.getAxisSymbol());
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172 rendererIndex = 0;
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173 }
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174 else {
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175 rendererIndex = dataset.getPlotAxisIndex();
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176 }
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177
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178 // Stick to the "right" (opposed to left) Y-Axis.
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179 if (rendererIndex != 0) {
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180 // OPTIMIZE: Pass a different area to this function,
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181 // do the adding to renderer outside (let this
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182 // function return the annotations).
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183 // Note that this path is travelled rarely.
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184 ChartArea area2 = new ChartArea(plot.getDomainAxis(), plot.getRangeAxis(rendererIndex));
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185 textAnnotation = new CollisionFreeXYTextAnnotation(
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186 annotation.getText(), area2.ofRight(TEXT_OFF), annotation.getPos());
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187 textAnnotation.setRotationAnchor(TextAnchor.CENTER_RIGHT);
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188 textAnnotation.setTextAnchor(TextAnchor.CENTER_RIGHT);
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189 lineAnnotation = createRightStickAnnotation(
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190 area2, annotation.getPos(), lineStyle);
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191 if (!Float.isNaN(annotation.getHitPoint()) && theme != null) {
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192 // New line annotation to hit curve.
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193 if (theme.parseShowVerticalLine()) {
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194 XYLineAnnotation hitLineAnnotation =
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195 createStickyLineAnnotation(
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196 StickyAxisAnnotation.SimpleAxis.X_AXIS,
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197 annotation.getHitPoint(), annotation.getPos(),// annotation.getHitPoint(),
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198 area2, lineStyle);
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199 plot.getRenderer(rendererIndex).addAnnotation(hitLineAnnotation,
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200 org.jfree.ui.Layer.BACKGROUND);
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201 }
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202 if (theme.parseShowHorizontalLine()) {
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203 XYLineAnnotation lineBackAnnotation =
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204 createStickyLineAnnotation(
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205 StickyAxisAnnotation.SimpleAxis.Y_AXIS2,
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206 annotation.getPos(), annotation.getHitPoint(),
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207 area2, lineStyle);
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208 plot.getRenderer(rendererIndex).addAnnotation(lineBackAnnotation,
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209 org.jfree.ui.Layer.BACKGROUND);
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210 }
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211 }
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212 }
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213 else { // Stick to the left y-axis.
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214 textAnnotation = new CollisionFreeXYTextAnnotation(
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215 annotation.getText(), area.ofLeft(TEXT_OFF), annotation.getPos());
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216 textAnnotation.setRotationAnchor(TextAnchor.CENTER_LEFT);
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217 textAnnotation.setTextAnchor(TextAnchor.CENTER_LEFT);
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218 lineAnnotation = createLeftStickAnnotation(area, annotation.getPos(), lineStyle);
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219 if (!Float.isNaN(annotation.getHitPoint()) && theme != null) {
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220 // New line annotation to hit curve.
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221 if (theme.parseShowHorizontalLine()) {
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222 XYLineAnnotation hitLineAnnotation =
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223 createStickyLineAnnotation(
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224 StickyAxisAnnotation.SimpleAxis.Y_AXIS,
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225 annotation.getPos(), annotation.getHitPoint(),
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226 area, lineStyle);
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227 plot.getRenderer(rendererIndex).addAnnotation(hitLineAnnotation,
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228 org.jfree.ui.Layer.BACKGROUND);
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229 }
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230 if (theme.parseShowVerticalLine()) {
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231 XYLineAnnotation lineBackAnnotation =
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232 createStickyLineAnnotation(
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233 StickyAxisAnnotation.SimpleAxis.X_AXIS,
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234 annotation.getHitPoint(), annotation.getPos(),
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235 area, lineStyle);
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236 plot.getRenderer(rendererIndex).addAnnotation(lineBackAnnotation,
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237 org.jfree.ui.Layer.BACKGROUND);
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238 }
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239 }
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240 }
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241 }
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242
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243 // Style the text.
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244 if (textStyle != null) {
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245 textStyle.apply(textAnnotation);
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246 }
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247
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248 // Add the Annotations to renderer.
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249 plot.getRenderer(rendererIndex).addAnnotation(textAnnotation,
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250 org.jfree.ui.Layer.FOREGROUND);
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251 plot.getRenderer(rendererIndex).addAnnotation(lineAnnotation,
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252 org.jfree.ui.Layer.FOREGROUND);
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253 }
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254
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255 /**
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256 * Create annotation that sticks to "ground" (X) axis.
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257 * @param area helper to calculate coordinates
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258 * @param pos one-dimensional position (distance from axis)
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259 * @param lineStyle the line style to use for the line.
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260 */
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261 public static XYLineAnnotation createGroundStickAnnotation(
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262 ChartArea area, float pos, LineStyle lineStyle
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263 ) {
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264 // Style the line.
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265 if (lineStyle != null) {
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266 return new XYLineAnnotation(
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267 pos, area.atGround(),
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268 pos, area.ofGround(ANNOTATIONS_AXIS_OFFSET),
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269 new BasicStroke(lineStyle.getWidth()),lineStyle.getColor());
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270 }
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271 else {
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272 return new XYLineAnnotation(
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273 pos, area.atGround(),
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274 pos, area.ofGround(ANNOTATIONS_AXIS_OFFSET));
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275 }
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276 }
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277
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278
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279 /**
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280 * Create annotation that sticks to the second Y axis ("right").
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281 * @param area helper to calculate coordinates
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282 * @param pos one-dimensional position (distance from axis)
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283 * @param lineStyle the line style to use for the line.
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284 */
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285 public static XYLineAnnotation createRightStickAnnotation(
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286 ChartArea area, float pos, LineStyle lineStyle
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287 ) {
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288 // Style the line.
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289 if (lineStyle != null) {
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290 return new XYLineAnnotation(
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291 area.ofRight(ANNOTATIONS_AXIS_OFFSET), pos,
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292 area.atRight(), pos,
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293 new BasicStroke(lineStyle.getWidth()), lineStyle.getColor());
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294 }
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295 else {
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296 return new XYLineAnnotation(
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297 area.atRight(), pos,
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298 area.ofRight(ANNOTATIONS_AXIS_OFFSET), pos);
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299 }
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300 }
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301 /**
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302 * Create annotation that sticks to the first Y axis ("left").
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303 * @param area helper to calculate coordinates
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304 * @param pos one-dimensional position (distance from axis)
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305 * @param lineStyle the line style to use for the line.
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306 */
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307 public static XYLineAnnotation createLeftStickAnnotation(
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308 ChartArea area, float pos, LineStyle lineStyle
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309 ) {
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310 // Style the line.
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311 if (lineStyle != null) {
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312 return new XYLineAnnotation(
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313 area.atLeft(), pos,
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314 area.ofLeft(ANNOTATIONS_AXIS_OFFSET), pos,
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315 new BasicStroke(lineStyle.getWidth()), lineStyle.getColor());
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316 }
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317 else {
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318 return new XYLineAnnotation(
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319 area.atLeft(), pos,
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320 area.ofLeft(ANNOTATIONS_AXIS_OFFSET), pos);
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321 }
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322 }
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323
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324
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325 /**
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326 * Create a line from a axis to a given point.
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327 * @param axis The "simple" axis.
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328 * @param fromD1 from-location in first dimension.
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329 * @param toD2 to-location in second dimension.
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330 * @param area helper to calculate offsets.
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331 * @param lineStyle optional line style.
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332 */
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333 public static XYLineAnnotation createStickyLineAnnotation(
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334 StickyAxisAnnotation.SimpleAxis axis, float fromD1, float toD2,
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335 ChartArea area, LineStyle lineStyle
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336 ) {
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337 double anchorX1 = 0d, anchorX2 = 0d, anchorY1 = 0d, anchorY2 = 0d;
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338 switch(axis) {
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339 case X_AXIS:
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340 anchorX1 = fromD1;
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341 anchorX2 = fromD1;
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342 anchorY1 = area.atGround();
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343 anchorY2 = toD2;
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344 break;
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345 case Y_AXIS:
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346 anchorX1 = area.atLeft();
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347 anchorX2 = toD2;
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348 anchorY1 = fromD1;
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349 anchorY2 = fromD1;
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350 break;
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351 case Y_AXIS2:
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352 anchorX1 = area.atRight();
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353 anchorX2 = toD2;
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354 anchorY1 = fromD1;
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355 anchorY2 = fromD1;
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356 break;
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357 }
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358 // Style the line.
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359 if (lineStyle != null) {
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360 return new XYLineAnnotation(
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361 anchorX1, anchorY1,
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362 anchorX2, anchorY2,
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363 new BasicStroke(lineStyle.getWidth()), lineStyle.getColor());
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364 }
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365 else {
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366 return new XYLineAnnotation(
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367 anchorX1, anchorY1,
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368 anchorX2, anchorY2);
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369 }
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370 }
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371
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372 };
http://dive4elements.wald.intevation.org