Mercurial > dive4elements > river
annotate artifacts/src/main/java/org/dive4elements/river/jfree/AnnotationHelper.java @ 8338:ac7cb15e1946
Scale second W-axis in cm according to first axis, which is expanded relative to the data, and set bounds for zooming purposes (plus a bit of cleanup in DiagramGenerator).
author | "Tom Gottfried <tom@intevation.de>" |
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date | Fri, 26 Sep 2014 18:23:45 +0200 |
parents | c086b06b81e5 |
children | 130160b8d245 |
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), |
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62 plot.getRangeAxis()); |
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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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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: " |
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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 }; |