Mercurial > dive4elements > river

annotate artifacts/src/main/java/org/dive4elements/river/jfree/AnnotationHelper.java @ 8365:ebf74d92be38

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author Tom Gottfried <tom@intevation.de>
date Thu, 02 Oct 2014 10:13:31 +0200
parents 31272d799dad
children 5e38e2924c07
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.ArrayList;
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14 import java.util.Map;
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15 import java.util.SortedMap;
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16
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17 import java.awt.BasicStroke;
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18 import java.awt.Color;
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19 import java.awt.Font;
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20
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21 import org.jfree.ui.TextAnchor;
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22 import org.jfree.chart.plot.XYPlot;
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23 import org.jfree.chart.LegendItem;
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24 import org.jfree.chart.LegendItemCollection;
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25 import org.jfree.chart.annotations.XYTextAnnotation;
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26 import org.jfree.chart.annotations.XYLineAnnotation;
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27 import org.jfree.chart.renderer.xy.XYItemRenderer;
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28
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29 import org.dive4elements.river.themes.LineStyle;
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30 import org.dive4elements.river.themes.TextStyle;
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31 import org.dive4elements.river.exports.ChartSettings;
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32 import org.dive4elements.river.exports.LegendSection;
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33 import org.dive4elements.river.exports.ChartArea;
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34
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35 import org.apache.log4j.Logger;
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36
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37 /** Annotation helper class, handles plotting of annotations. */
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38 public class AnnotationHelper {
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39 private static final Logger log = Logger.getLogger(AnnotationHelper.class);
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40
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41 protected static float ANNOTATIONS_AXIS_OFFSET = 0.02f;
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42
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43 /* arr this would be better in chartsettings */
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44 public static final int DEFAULT_FONT_SIZE = 12;
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45 public static final String DEFAULT_FONT_NAME = "Tahoma";
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46
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47
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48 public static void addYAnnotationsToRenderer(
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49 SortedMap<Integer, RiverAnnotation> yAnnotations,
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50 XYPlot plot,
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51 ChartSettings settings,
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52 Map<Integer, AxisDataset> datasets
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53 ) {
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54 List<RiverAnnotation> annotations = new ArrayList<RiverAnnotation>();
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55
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56 for (Map.Entry<Integer, RiverAnnotation> entry:
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57 yAnnotations.entrySet()) {
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58 int axis = entry.getKey();
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59 AxisDataset dataset = datasets.get(new Integer(axis));
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60
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61 if (dataset == null || dataset.getRange() == null) {
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62 log.warn("No dataset available and active for axis " + axis);
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63 }
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64 else {
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65 RiverAnnotation ya = entry.getValue();
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66 for (StickyAxisAnnotation sta: ya.getAxisTextAnnotations()) {
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67 sta.setAxisSymbol(axis);
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68 }
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69 annotations.add(ya);
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70 }
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71 }
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72
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73 addAnnotationsToRenderer(annotations, plot, settings, datasets);
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74 }
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75
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76 /**
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77 * Add annotations (Sticky, Text and hyk zones) to a plot.
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78 * @param annotations Annotations to add
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79 * @param plot XYPlot to add annotations to.
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80 * @param settings ChartSettings object for settings.
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81 * @param datasets Map of axis index and datasets
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82 */
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83 public static void addAnnotationsToRenderer(
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84 List<RiverAnnotation> annotations,
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85 XYPlot plot,
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86 ChartSettings settings,
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87 Map<Integer, AxisDataset> datasets
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88 ) {
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89 if (annotations == null || annotations.isEmpty()) {
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90 log.debug("addAnnotationsToRenderer: no annotations.");
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91 return;
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92 }
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93
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94 // OPTMIMIZE: Pre-calculate positions
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95 ChartArea area = new ChartArea(
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96 plot.getDomainAxis(0),
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97 plot.getRangeAxis());
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98
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99 // Walk over all Annotation sets.
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100 for (RiverAnnotation fa: annotations) {
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101
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102 // Access text styling, if any.
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103 ThemeDocument theme = fa.getTheme();
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104 TextStyle textStyle = null;
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105 LineStyle lineStyle = null;
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106
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107 // Get Theming information and add legend item.
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108 if (theme != null) {
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109 textStyle = theme.parseComplexTextStyle();
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110 lineStyle = theme.parseComplexLineStyle();
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111 if (fa.getLabel() != null) {
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112 // Legend handling, maybe misplaced?
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113 LegendItemCollection lic = new LegendItemCollection();
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114 LegendItemCollection old = plot.getFixedLegendItems();
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115
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116 Color color = theme.parseLineColorField();
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117 if (color == null) {
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118 color = Color.BLACK;
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119 }
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120
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121 Color textColor = theme.parseTextColor();
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122 if (textColor == null) {
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123 textColor = Color.BLACK;
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124 }
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125
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126 LegendItem newItem = new LegendItem(fa.getLabel(), color);
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127 LegendSection ls = (settings != null ?
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128 settings.getLegendSection() : null);
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129 newItem.setLabelFont (new Font(
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130 DEFAULT_FONT_NAME,
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131 Font.PLAIN,
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132 ls != null ? ls.getFontSize() : null)
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133 );
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134
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135 newItem.setLabelPaint(textColor);
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136
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137 lic.add(newItem);
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138 // (Re-)Add prior legend entries.
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139 if (old != null) {
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140 old.addAll(lic);
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141 }
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142 else {
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143 old = lic;
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144 }
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145 plot.setFixedLegendItems(old);
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146 }
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147 }
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148
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149 // The 'Sticky' Annotations (at axis, with line and text).
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150 for (StickyAxisAnnotation sta: fa.getAxisTextAnnotations()) {
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151 addStickyAnnotation(
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152 sta, plot, area, lineStyle, textStyle, theme,
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153 datasets.get(new Integer(sta.getAxisSymbol())));
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154 }
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155
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156 // Other Text Annotations (e.g. labels of (manual) points).
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157 for (XYTextAnnotation ta: fa.getTextAnnotations()) {
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158 // Style the text.
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159 if (textStyle != null) {
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160 textStyle.apply(ta);
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161 }
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162 ta.setY(area.above(0.05d, ta.getY()));
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163 plot.getRenderer().addAnnotation(ta, org.jfree.ui.Layer.FOREGROUND);
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164 }
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165 }
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166 }
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167
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168 /**
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169 * Add a text and a line annotation.
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170 * @param area convenience to determine positions in plot.
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171 * @param theme (optional) theme document
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172 */
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173 public static void addStickyAnnotation(
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174 StickyAxisAnnotation annotation,
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175 XYPlot plot,
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176 ChartArea area,
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177 LineStyle lineStyle,
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178 TextStyle textStyle,
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179 ThemeDocument theme,
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180 AxisDataset dataset
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181 ) {
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182 // OPTIMIZE pre-calculate area-related values
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183 final float TEXT_OFF = 0.03f;
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184
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185 XYLineAnnotation lineAnnotation = null;
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186 XYTextAnnotation textAnnotation = null;
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187
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188 int axisIndex = annotation.getAxisSymbol();
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189 XYItemRenderer renderer = null;
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190 if (dataset != null && dataset.getDatasets().length > 0) {
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191 renderer = plot.getRendererForDataset(dataset.getDatasets()[0]);
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192 }
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193 else {
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194 renderer = plot.getRenderer();
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195 }
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196
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197 if (annotation.atX()) {
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198 textAnnotation = new CollisionFreeXYTextAnnotation(
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199 annotation.getText(), annotation.getPos(), area.ofGround(TEXT_OFF));
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200 // OPTIMIZE externalize the calculation involving PI.
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201 //textAnnotation.setRotationAngle(270f*Math.PI/180f);
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202 lineAnnotation = createGroundStickAnnotation(
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203 area, annotation.getPos(), lineStyle);
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204 textAnnotation.setRotationAnchor(TextAnchor.CENTER_LEFT);
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205 textAnnotation.setTextAnchor(TextAnchor.CENTER_LEFT);
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206 }
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207 else {
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208 // Stick to the "right" (opposed to left) Y-Axis.
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209 if (axisIndex != 0 && plot.getRangeAxis(axisIndex) != null) {
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210 // OPTIMIZE: Pass a different area to this function,
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211 // do the adding to renderer outside (let this
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212 // function return the annotations).
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213 // Note that this path is travelled rarely.
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214 textAnnotation = new CollisionFreeXYTextAnnotation(
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215 annotation.getText(),
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216 area.ofRight(TEXT_OFF),
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217 annotation.getPos()
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218 );
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219 textAnnotation.setRotationAnchor(TextAnchor.CENTER_RIGHT);
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220 textAnnotation.setTextAnchor(TextAnchor.CENTER_RIGHT);
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221 lineAnnotation = createRightStickAnnotation(
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222 area, annotation.getPos(), lineStyle);
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223
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224 // hit-lines for duration curve
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225 ChartArea area2 = new ChartArea(
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226 plot.getDomainAxis(), plot.getRangeAxis(axisIndex));
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227 if (!Float.isNaN(annotation.getHitPoint()) && theme != null) {
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228 // New line annotation to hit curve.
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229 if (theme.parseShowVerticalLine()) {
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230 XYLineAnnotation hitLineAnnotation =
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231 createStickyLineAnnotation(
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232 StickyAxisAnnotation.SimpleAxis.X_AXIS,
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233 annotation.getHitPoint(), annotation.getPos(),// annotation.getHitPoint(),
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234 area2, lineStyle);
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235 renderer.addAnnotation(hitLineAnnotation,
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236 org.jfree.ui.Layer.BACKGROUND);
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237 }
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238 if (theme.parseShowHorizontalLine()) {
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239 XYLineAnnotation lineBackAnnotation =
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240 createStickyLineAnnotation(
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241 StickyAxisAnnotation.SimpleAxis.Y_AXIS2,
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242 annotation.getPos(), annotation.getHitPoint(),
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243 area2, lineStyle);
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244 renderer.addAnnotation(lineBackAnnotation,
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245 org.jfree.ui.Layer.BACKGROUND);
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246 }
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247 }
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248 }
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249 else { // Stick to the left y-axis.
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250 textAnnotation = new CollisionFreeXYTextAnnotation(
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251 annotation.getText(), area.ofLeft(TEXT_OFF), annotation.getPos());
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252 textAnnotation.setRotationAnchor(TextAnchor.CENTER_LEFT);
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253 textAnnotation.setTextAnchor(TextAnchor.CENTER_LEFT);
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254 lineAnnotation = createLeftStickAnnotation(area, annotation.getPos(), lineStyle);
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255 if (!Float.isNaN(annotation.getHitPoint()) && theme != null) {
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256 // New line annotation to hit curve.
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257 if (theme.parseShowHorizontalLine()) {
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258 XYLineAnnotation hitLineAnnotation =
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259 createStickyLineAnnotation(
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260 StickyAxisAnnotation.SimpleAxis.Y_AXIS,
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261 annotation.getPos(), annotation.getHitPoint(),
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262 area, lineStyle);
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263 renderer.addAnnotation(hitLineAnnotation,
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264 org.jfree.ui.Layer.BACKGROUND);
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265 }
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266 if (theme.parseShowVerticalLine()) {
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267 XYLineAnnotation lineBackAnnotation =
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268 createStickyLineAnnotation(
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269 StickyAxisAnnotation.SimpleAxis.X_AXIS,
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270 annotation.getHitPoint(), annotation.getPos(),
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271 area, lineStyle);
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272 renderer.addAnnotation(lineBackAnnotation,
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273 org.jfree.ui.Layer.BACKGROUND);
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274 }
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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 // Style the text.
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280 if (textStyle != null) {
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281 textStyle.apply(textAnnotation);
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282 }
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283
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284 // Add the Annotations to renderer.
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285 renderer.addAnnotation(textAnnotation, org.jfree.ui.Layer.FOREGROUND);
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286 renderer.addAnnotation(lineAnnotation, org.jfree.ui.Layer.FOREGROUND);
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287 }
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288
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289 /**
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290 * Create annotation that sticks to "ground" (X) axis.
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291 * @param area helper to calculate coordinates
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292 * @param pos one-dimensional position (distance from axis)
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293 * @param lineStyle the line style to use for the line.
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294 */
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295 public static XYLineAnnotation createGroundStickAnnotation(
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296 ChartArea area, float pos, LineStyle lineStyle
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297 ) {
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298 // Style the line.
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299 if (lineStyle != null) {
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300 return new XYLineAnnotation(
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301 pos, area.atGround(),
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302 pos, area.ofGround(ANNOTATIONS_AXIS_OFFSET),
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303 new BasicStroke(lineStyle.getWidth()),lineStyle.getColor());
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Andre Heinecke <aheinecke@intevation.de>
parents:
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304 }
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Andre Heinecke <aheinecke@intevation.de>
parents:
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305 else {
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Andre Heinecke <aheinecke@intevation.de>
parents:
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306 return new XYLineAnnotation(
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Andre Heinecke <aheinecke@intevation.de>
parents:
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307 pos, area.atGround(),
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Andre Heinecke <aheinecke@intevation.de>
parents:
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308 pos, area.ofGround(ANNOTATIONS_AXIS_OFFSET));
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Andre Heinecke <aheinecke@intevation.de>
parents:
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309 }
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Andre Heinecke <aheinecke@intevation.de>
parents:
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310 }
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Andre Heinecke <aheinecke@intevation.de>
parents:
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311
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Andre Heinecke <aheinecke@intevation.de>
parents:
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312
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Andre Heinecke <aheinecke@intevation.de>
parents:
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313 /**
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Andre Heinecke <aheinecke@intevation.de>
parents:
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314 * Create annotation that sticks to the second Y axis ("right").
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Andre Heinecke <aheinecke@intevation.de>
parents:
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315 * @param area helper to calculate coordinates
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Andre Heinecke <aheinecke@intevation.de>
parents:
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316 * @param pos one-dimensional position (distance from axis)
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Andre Heinecke <aheinecke@intevation.de>
parents:
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317 * @param lineStyle the line style to use for the line.
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Andre Heinecke <aheinecke@intevation.de>
parents:
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318 */
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Andre Heinecke <aheinecke@intevation.de>
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319 public static XYLineAnnotation createRightStickAnnotation(
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320 ChartArea area, float pos, LineStyle lineStyle
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Andre Heinecke <aheinecke@intevation.de>
parents:
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321 ) {
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parents:
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322 // Style the line.
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parents:
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323 if (lineStyle != null) {
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parents:
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324 return new XYLineAnnotation(
8341
130160b8d245 Introduce annotations, which know to which axis they belong.
Tom Gottfried <tom@intevation.de>
parents: 8316
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325 area.atRight(), pos,
7043
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Andre Heinecke <aheinecke@intevation.de>
parents:
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326 area.ofRight(ANNOTATIONS_AXIS_OFFSET), pos,
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Andre Heinecke <aheinecke@intevation.de>
parents:
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327 new BasicStroke(lineStyle.getWidth()), lineStyle.getColor());
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Andre Heinecke <aheinecke@intevation.de>
parents:
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328 }
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parents:
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329 else {
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parents:
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330 return new XYLineAnnotation(
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Andre Heinecke <aheinecke@intevation.de>
parents:
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331 area.atRight(), pos,
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Andre Heinecke <aheinecke@intevation.de>
parents:
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332 area.ofRight(ANNOTATIONS_AXIS_OFFSET), pos);
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Andre Heinecke <aheinecke@intevation.de>
parents:
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333 }
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Andre Heinecke <aheinecke@intevation.de>
parents:
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334 }
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Andre Heinecke <aheinecke@intevation.de>
parents:
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335 /**
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Andre Heinecke <aheinecke@intevation.de>
parents:
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336 * Create annotation that sticks to the first Y axis ("left").
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Andre Heinecke <aheinecke@intevation.de>
parents:
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337 * @param area helper to calculate coordinates
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Andre Heinecke <aheinecke@intevation.de>
parents:
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338 * @param pos one-dimensional position (distance from axis)
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Andre Heinecke <aheinecke@intevation.de>
parents:
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339 * @param lineStyle the line style to use for the line.
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Andre Heinecke <aheinecke@intevation.de>
parents:
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340 */
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Andre Heinecke <aheinecke@intevation.de>
parents:
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341 public static XYLineAnnotation createLeftStickAnnotation(
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Andre Heinecke <aheinecke@intevation.de>
parents:
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342 ChartArea area, float pos, LineStyle lineStyle
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Andre Heinecke <aheinecke@intevation.de>
parents:
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343 ) {
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Andre Heinecke <aheinecke@intevation.de>
parents:
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344 // Style the line.
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Andre Heinecke <aheinecke@intevation.de>
parents:
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345 if (lineStyle != null) {
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Andre Heinecke <aheinecke@intevation.de>
parents:
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346 return new XYLineAnnotation(
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Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
347 area.atLeft(), pos,
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Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
348 area.ofLeft(ANNOTATIONS_AXIS_OFFSET), pos,
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Andre Heinecke <aheinecke@intevation.de>
parents:
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349 new BasicStroke(lineStyle.getWidth()), lineStyle.getColor());
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Andre Heinecke <aheinecke@intevation.de>
parents:
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350 }
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Andre Heinecke <aheinecke@intevation.de>
parents:
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351 else {
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Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
352 return new XYLineAnnotation(
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Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
353 area.atLeft(), pos,
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Andre Heinecke <aheinecke@intevation.de>
parents:
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354 area.ofLeft(ANNOTATIONS_AXIS_OFFSET), pos);
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Andre Heinecke <aheinecke@intevation.de>
parents:
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355 }
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Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
356 }
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Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
357
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Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
358
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Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
359 /**
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Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
360 * Create a line from a axis to a given point.
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Andre Heinecke <aheinecke@intevation.de>
parents:
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361 * @param axis The "simple" axis.
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Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
362 * @param fromD1 from-location in first dimension.
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Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
363 * @param toD2 to-location in second dimension.
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Andre Heinecke <aheinecke@intevation.de>
parents:
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364 * @param area helper to calculate offsets.
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Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
365 * @param lineStyle optional line style.
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Andre Heinecke <aheinecke@intevation.de>
parents:
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366 */
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Andre Heinecke <aheinecke@intevation.de>
parents:
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367 public static XYLineAnnotation createStickyLineAnnotation(
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Andre Heinecke <aheinecke@intevation.de>
parents:
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368 StickyAxisAnnotation.SimpleAxis axis, float fromD1, float toD2,
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Andre Heinecke <aheinecke@intevation.de>
parents:
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369 ChartArea area, LineStyle lineStyle
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Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
370 ) {
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Andre Heinecke <aheinecke@intevation.de>
parents:
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371 double anchorX1 = 0d, anchorX2 = 0d, anchorY1 = 0d, anchorY2 = 0d;
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Andre Heinecke <aheinecke@intevation.de>
parents:
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372 switch(axis) {
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Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
373 case X_AXIS:
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Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
374 anchorX1 = fromD1;
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Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
375 anchorX2 = fromD1;
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Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
376 anchorY1 = area.atGround();
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Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
377 anchorY2 = toD2;
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Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
378 break;
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Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
379 case Y_AXIS:
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Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
380 anchorX1 = area.atLeft();
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Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
381 anchorX2 = toD2;
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Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
382 anchorY1 = fromD1;
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Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
383 anchorY2 = fromD1;
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Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
384 break;
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Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
385 case Y_AXIS2:
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Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
386 anchorX1 = area.atRight();
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Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
387 anchorX2 = toD2;
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Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
388 anchorY1 = fromD1;
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Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
389 anchorY2 = fromD1;
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Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
390 break;
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Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
391 }
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Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
392 // Style the line.
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Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
393 if (lineStyle != null) {
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Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
394 return new XYLineAnnotation(
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Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
395 anchorX1, anchorY1,
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Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
396 anchorX2, anchorY2,
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Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
397 new BasicStroke(lineStyle.getWidth()), lineStyle.getColor());
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Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
398 }
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Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
399 else {
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Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
400 return new XYLineAnnotation(
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Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
401 anchorX1, anchorY1,
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Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
402 anchorX2, anchorY2);
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Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
403 }
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Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
404 }
06a9a241faac Factor out annotation handling code
Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
405
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Andre Heinecke <aheinecke@intevation.de>
parents:
diff changeset
406 };
http://dive4elements.wald.intevation.org