Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/jfree/StickyAxisAnnotation.java @ 1085:07878836ee0d

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Plot "real" (respecting parameters) W and Q MainValues, yet in wrong scale. flys-artifacts/trunk@2588 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Felix Wolfsteller <felix.wolfsteller@intevation.de>
date Fri, 26 Aug 2011 08:49:18 +0000
parents f16b66839e59
children e298c4d28927
rev   line source
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1 package de.intevation.flys.jfree;
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2
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3 import org.apache.log4j.Logger;
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4
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5 import java.util.Iterator;
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6
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7 import java.awt.Shape;
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8 import java.awt.geom.Rectangle2D;
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9 import java.awt.geom.Line2D;
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10
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11 import org.jfree.chart.annotations.XYTextAnnotation;
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12 import org.jfree.chart.axis.ValueAxis;
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13 import org.jfree.chart.util.LineUtilities;
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14 import org.jfree.chart.plot.PlotOrientation;
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15 import org.jfree.chart.plot.XYPlot;
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16 import org.jfree.chart.entity.XYAnnotationEntity;
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17 import org.jfree.chart.plot.PlotRenderingInfo;
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18 import org.jfree.chart.ChartRenderingInfo;
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19 import org.jfree.chart.plot.Plot;
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20
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21 import org.jfree.data.Range;
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22
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23 import org.jfree.text.TextUtilities;
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24
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25 import org.jfree.ui.RectangleEdge;
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26 import org.jfree.ui.TextAnchor;
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27
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28
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29 /**
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30 * Custom Annotations class that is drawn only if no collisions with other
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31 * already drawn CustomAnnotations in current plot are found.
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32 * Draws a given text and a line to it from either axis.
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33 */
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34 public class StickyAxisAnnotation extends XYTextAnnotation {
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35
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36 /** Logger for this class. */
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37 private static Logger logger =
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38 Logger.getLogger(StickyAxisAnnotation.class);
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39
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40 /** Simplified view on axes. */
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41 public static enum SimpleAxis {
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42 X_AXIS, /** Usually "horizontal". */
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43 Y_AXIS /** Usually "vertical". */
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44 }
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45
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46 /** Which axis to stick to. */
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47 protected SimpleAxis stickyAxis = SimpleAxis.X_AXIS;
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48
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49 /** The 1-dimensional position of this annotation. */
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50 protected float pos;
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51
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52
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53 /**
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54 * Trivial constructor.
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55 *
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56 * @param text Text to display.
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57 * @param x X-position in dataspace (typical horizontal, in km).
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58 * @param y Y-position in dataspace (typical vertical, in m).
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59 * @deprecated
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60 */
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61 public StickyAxisAnnotation(String text, float x, float y) {
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62 super(text, x, y);
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63 setStickyAxis(SimpleAxis.X_AXIS);
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64 }
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65
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66
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67 /**
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68 * Constructor with given explicit axis.
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69 * @param text the text to display.
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70 * @param pos the position at which to draw the text and mark.
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71 * @param stickyAxis the axis at which to stick (and to which 'pos' is
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72 * relative).
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73 */
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74 public StickyAxisAnnotation(String text, float pos, SimpleAxis stickAxis) {
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75 super(text, pos, pos);
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76 setStickyAxis(stickAxis);
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77 this.pos = pos;
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78 }
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79
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80 /**
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81 * Legacy-Constructor.
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82 * @deprecated
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83 */
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84 public StickyAxisAnnotation(String text, float x, float y,
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85 SimpleAxis stickAxis) {
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86 super(text, x, y);
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87 setStickyAxis(stickAxis);
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88 this.pos = x;
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89 }
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90
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91
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92 /**
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93 * Sets the "sticky axis" (whether to draw annotations at the
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94 * X- or the Y-Axis.
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95 *
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96 * @param stickyAxis axis to stick to.
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97 */
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98 public void setStickyAxis(SimpleAxis stickyAxis) {
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99 this.stickyAxis = stickyAxis;
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100 if (stickyAxis == SimpleAxis.X_AXIS) {
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101 this.setRotationAngle(270f * (Math.PI / 180f));
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102 this.setRotationAnchor(TextAnchor.CENTER_LEFT);
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103 this.setTextAnchor(TextAnchor.CENTER_LEFT);
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104 } else {
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105 this.setRotationAngle(0f * (Math.PI / 180f));
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106 this.setRotationAnchor(TextAnchor.CENTER_LEFT);
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107 this.setTextAnchor(TextAnchor.CENTER_LEFT);
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108 }
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109 }
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110
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111
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112 /**
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113 * Draws a small line at axis where this annotation resides.
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114 *
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115 * @param g2 the graphics device.
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116 * @param dataArea the data area.
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117 * @param domainAxis the domain axis.
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118 * @param rangeAxis the range axis.
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119 * @param domainEdge the domain edge.
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120 * @param rangeEdge the range edge.
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121 * @param orientation the plot orientation.
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122 */
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123 protected void drawAxisMark(
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124 java.awt.Graphics2D g2,
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125 java.awt.geom.Rectangle2D dataArea,
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126 ValueAxis domainAxis,
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127 ValueAxis rangeAxis,
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128 RectangleEdge domainEdge,
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129 RectangleEdge rangeEdge,
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130 PlotOrientation orientation) {
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131 float j2DX1 = 0.0f;
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132 float j2DX2 = 0.0f;
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133 float j2DY1 = 0.0f;
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134 float j2DY2 = 0.0f;
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135 float x = (float) getX();
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136 float y = (float) getY();
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137 /* When dependent on X/Y-Axis and orientation, following
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138 can be used as a base:
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139 if (orientation == PlotOrientation.VERTICAL) {
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140 j2DX1 = (float) domainAxis.valueToJava2D(x, dataArea,
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141 domainEdge);
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142 j2DY1 = (float) rangeAxis.valueToJava2D(y, dataArea,
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143 rangeEdge);
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144 j2DX2 = (float) domainAxis.valueToJava2D(x, dataArea,
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145 domainEdge);
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146 j2DY2 = (float) rangeAxis.valueToJava2D(y, dataArea,
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147 rangeEdge);
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148 }
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149 else if (orientation == PlotOrientation.HORIZONTAL) {
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150 j2DY1 = (float) domainAxis.valueToJava2D(x, dataArea,
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151 domainEdge);
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152 j2DX1 = (float) rangeAxis.valueToJava2D(y, dataArea,
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153 rangeEdge);
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154 j2DY2 = (float) domainAxis.valueToJava2D(x, dataArea,
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155 domainEdge);
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156 j2DX2 = (float) rangeAxis.valueToJava2D(y, dataArea,
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157 rangeEdge);
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158 }
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159
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160 g2.setPaint(this.paint);
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161 g2.setStroke(this.stroke);
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162 */
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163 if (this.stickyAxis == SimpleAxis.X_AXIS) {
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164 j2DY1 = (float) RectangleEdge.coordinate(dataArea, domainEdge);
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165 double rangeLow = rangeAxis.getRange().getLowerBound();
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166 // Line ends at 1.5% of full distance.
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167 j2DY2 = (float) rangeAxis.valueToJava2D(
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168 (1f - 0.015f) * rangeLow + 0.015f *
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169 rangeAxis.getRange().getUpperBound(),
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170 dataArea, rangeEdge);
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171 j2DX1 = (float) domainAxis.valueToJava2D(x, dataArea, domainEdge);
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172 j2DX2 = j2DX1;
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173 } else {
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174 j2DX1 = (float) RectangleEdge.coordinate(dataArea, rangeEdge);
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175 Range domainRange = domainAxis.getRange();
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176 double rangeLow = domainRange.getLowerBound();
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177 // Line ends at 1.5% of full distance.
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178 j2DX2 = (float) domainAxis.valueToJava2D(
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179 (1f - 0.015f) * rangeLow + 0.015f *
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180 domainRange.getUpperBound(),
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181 dataArea, domainEdge);
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182 j2DY1 = (float) rangeAxis.valueToJava2D(pos, dataArea, rangeEdge);
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183 j2DY2 = j2DY1;
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184 }
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185
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186 Line2D line = new Line2D.Float(j2DX1, j2DY1, j2DX2, j2DY2);
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187
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188 // line is clipped to avoid JRE bug 6574155, for more info
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189 // see JFreeChart bug 2221495
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190 boolean visible = LineUtilities.clipLine(line, dataArea);
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191 if (visible) {
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192 g2.draw(line);
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193 }
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194 }
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195
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196
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197 /**
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198 * Draw the Annotiation if it does not collide with other already drawn
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199 * Annotations.
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200 *
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201 * @param g2 the graphics device.
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202 * @param plot the plot.
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203 * @param dataArea the data area.
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204 * @param domainAxis the domain axis.
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205 * @param rangeAxis the range axis.
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206 * @param rendererIndex the render index.
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207 * @param info state information, escpecially collects info about
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208 * already drawn shapes (and thus annotations), used
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209 * for collision detection.
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210 */
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211 @Override
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212 public void draw(
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213 java.awt.Graphics2D g2,
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214 XYPlot plot,
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215 java.awt.geom.Rectangle2D dataArea,
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216 ValueAxis domainAxis,
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217 ValueAxis rangeAxis,
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218 int rendererIndex,
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219 PlotRenderingInfo info) {
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220
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221 if (info == null)
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222 return;
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223
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224 // Calculate the bounding box.
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225 ChartRenderingInfo chartInfo = info.getOwner();
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226
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227 PlotOrientation orientation = plot.getOrientation();
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228 RectangleEdge domainEdge = Plot.resolveDomainAxisLocation(
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229 plot.getDomainAxisLocation(), orientation);
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230 RectangleEdge rangeEdge = Plot.resolveRangeAxisLocation(
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231 plot.getRangeAxisLocation(), orientation);
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232 float anchorX = 0f;
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233 float anchorY = 0.0f;
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234 if (this.stickyAxis == SimpleAxis.X_AXIS) {
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235 // Text starts at 1.5% of full distance.
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236 float rangeLow = (float) rangeAxis.getRange().getLowerBound();
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237 float y = rangeLow + 0.02f * ((float)
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238 rangeAxis.getRange().getUpperBound() - rangeLow);
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239 setY(y);
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240
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241 anchorX = (float) domainAxis.valueToJava2D(
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242 getX(), dataArea, domainEdge);
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243 anchorY = (float) rangeAxis.valueToJava2D(
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244 getY(), dataArea, rangeEdge);
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245 } else {
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246 float rangeLow = (float) domainAxis.getRange().getLowerBound();
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247 float x = rangeLow + 0.02f * ((float)
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248 domainAxis.getRange().getUpperBound() - rangeLow);
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249 setX(x);
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250 anchorX = (float) domainAxis.valueToJava2D(
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251 getX(), dataArea, domainEdge);
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252 anchorY = (float) rangeAxis.valueToJava2D(
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253 getY(), dataArea, rangeEdge);
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254 }
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255 if (orientation == PlotOrientation.HORIZONTAL) {
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256 float tempAnchor = anchorX;
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257 anchorX = anchorY;
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258 anchorY = tempAnchor;
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259 }
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260
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261 // Always draw the small line at axis.
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262 drawAxisMark(g2, dataArea, domainAxis, rangeAxis, domainEdge,
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263 rangeEdge, orientation);
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264
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265 g2.setFont(getFont());
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266 Shape hotspot = TextUtilities.calculateRotatedStringBounds(
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267 getText(), g2, anchorX, anchorY, getTextAnchor(),
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268 getRotationAngle(), getRotationAnchor());
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269 Rectangle2D hotspotBox = hotspot.getBounds2D();
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270 // Check for collisions with other XYAnnotations.
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271 for (Iterator i = chartInfo.getEntityCollection().iterator();
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272 i.hasNext(); ) {
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273 Object next = i.next();
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274 // Collision with other stuff than XYAnnotations are okay.
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275 if (next instanceof XYAnnotationEntity) {
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276 XYAnnotationEntity drawnShape = (XYAnnotationEntity) next;
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277 if (drawnShape.getArea().intersects(hotspotBox)) {
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278 // Found collision, early stop.
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279 return;
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280 }
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281 }
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282 }
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283
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284 // Actuall drawing.
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285 if (getBackgroundPaint() != null) {
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286 g2.setPaint(getBackgroundPaint());
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287 g2.fill(hotspot);
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288 }
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289 g2.setPaint(getPaint());
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290 TextUtilities.drawRotatedString(getText(), g2, anchorX, anchorY,
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291 getTextAnchor(), getRotationAngle(), getRotationAnchor());
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292 // Draw outline.
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293 if (false) {
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294 g2.setStroke(getOutlineStroke());
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295 g2.setPaint(getOutlinePaint());
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296 g2.draw(hotspot);
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297 }
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298
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299 // Add info that we have drawn this Annotation.
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300 addEntity(info, hotspot, rendererIndex, getToolTipText(), getURL());
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301 }
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302 }
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303
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304
http://dive4elements.wald.intevation.org