Mercurial > dive4elements > river

annotate flys-artifacts/src/main/java/de/intevation/flys/jfree/StickyAxisAnnotation.java @ 1752:b7b424ae32a8

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Added /dev/null Graphics2D object to be used in the info rendering pass of the diagram generation. flys-artifacts/trunk@3055 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Fri, 21 Oct 2011 13:25:24 +0000
parents 27b8836abec9
children 741ba9e34c7d
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 org.w3c.dom.Document;
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8
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9 import java.awt.Shape;
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10 import java.awt.geom.Rectangle2D;
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11 import java.awt.geom.Line2D;
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12 import java.awt.Color;
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13 import java.awt.Font;
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14 import java.awt.BasicStroke;
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15
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16 import org.jfree.chart.annotations.XYTextAnnotation;
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17 import org.jfree.chart.axis.ValueAxis;
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18 import org.jfree.chart.util.LineUtilities;
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19 import org.jfree.chart.plot.PlotOrientation;
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20 import org.jfree.chart.plot.XYPlot;
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21 import org.jfree.chart.entity.XYAnnotationEntity;
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22 import org.jfree.chart.plot.PlotRenderingInfo;
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23 import org.jfree.chart.ChartRenderingInfo;
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24 import org.jfree.chart.plot.Plot;
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25
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26 import org.jfree.data.Range;
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27
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28 import org.jfree.text.TextUtilities;
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29
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30 import org.jfree.ui.RectangleEdge;
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31 import org.jfree.ui.TextAnchor;
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32
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33 import de.intevation.flys.utils.ThemeUtil;
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34
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35 /**
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36 * Custom Annotations class that is drawn only if no collisions with other
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37 * already drawn CustomAnnotations in current plot are found.
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38 * Draws a given text and a line to it from either axis.
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39 */
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40 public class StickyAxisAnnotation extends XYTextAnnotation {
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41
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42 /** Logger for this class. */
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43 private static Logger logger =
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44 Logger.getLogger(StickyAxisAnnotation.class);
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45
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46 /** Simplified view on axes. */
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47 public static enum SimpleAxis {
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48 X_AXIS, /** Usually "horizontal". */
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49 Y_AXIS /** Usually "vertical". */
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50 }
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51
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52 /** Which axis to stick to. */
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53 protected SimpleAxis stickyAxis = SimpleAxis.X_AXIS;
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54
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55 /** The 1-dimensional position of this annotation. */
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56 protected float pos;
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57
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58 /** Theme attributes. */
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59 protected Color textColor;
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60 protected Color lineColor;
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61 protected Font font;
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62 protected int lineWidth;
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63 protected String textOrientation = "vertical";
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64 protected Color textBackground;
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65 protected boolean showBackground;
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66
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67
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68 /**
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69 * Trivial constructor.
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70 *
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71 * @param text Text to display.
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72 * @param x X-position in dataspace (typical horizontal, in km).
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73 * @param y Y-position in dataspace (typical vertical, in m).
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74 * @deprecated
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75 */
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76 public StickyAxisAnnotation(String text, float x, float y) {
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77 super(text, x, y);
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78 setStickyAxis(SimpleAxis.X_AXIS);
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79 }
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80
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81
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82 /**
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83 * Constructor with implicit sticky x-axis.
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84 * @param text the text to display.
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85 * @param pos the position at which to draw the text and mark.
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86 */
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87 public StickyAxisAnnotation(String text, float pos) {
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88 this(text, pos, pos, SimpleAxis.X_AXIS);
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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 * Constructor with given explicit axis.
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94 * @param text the text to display.
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95 * @param pos the position at which to draw the text and mark.
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96 * @param stickyAxis the axis at which to stick (and to which 'pos' is
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97 * relative).
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98 */
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99 public StickyAxisAnnotation(String text, float pos, SimpleAxis stickAxis) {
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100 super(text, pos, pos);
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101 setStickyAxis(stickAxis);
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102 this.pos = pos;
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103 }
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104
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105 /**
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106 * Legacy-Constructor.
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107 * @deprecated
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108 */
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109 public StickyAxisAnnotation(String text, float x, float y,
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110 SimpleAxis stickAxis) {
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111 super(text, x, y);
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112 setStickyAxis(stickAxis);
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113 this.pos = x;
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114 }
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115
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116
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117 /**
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118 * Sets the "sticky axis" (whether to draw annotations at the
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119 * X- or the Y-Axis.
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120 *
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121 * @param stickyAxis axis to stick to.
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122 */
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123 public void setStickyAxis(SimpleAxis stickyAxis) {
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124 this.stickyAxis = stickyAxis;
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125 if (stickyAxis == SimpleAxis.X_AXIS){
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126 float o = 270f;
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127 if(textOrientation.equals("horizontal")) {
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128 o = 0f;
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129 }
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parents: 1751
diff changeset
130 //logger.debug("orientation: " + o);
1751
27b8836abec9 Draw the text background and use orientation attribute.
Raimund Renkert <raimund.renkert@intevation.de>
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131 this.setRotationAngle(o * (Math.PI / 180f));
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f16b66839e59 Prepare StickyAxisAnnotation implementation to handle annotations at 'y' (vertical) axis.
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132 this.setRotationAnchor(TextAnchor.CENTER_LEFT);
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133 this.setTextAnchor(TextAnchor.CENTER_LEFT);
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134 } else {
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135 this.setRotationAngle(0f * (Math.PI / 180f));
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136 this.setRotationAnchor(TextAnchor.CENTER_LEFT);
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137 this.setTextAnchor(TextAnchor.CENTER_LEFT);
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138 }
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139 }
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140
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141
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142 /**
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143 * Draws a small line at axis where this annotation resides.
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144 *
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145 * @param g2 the graphics device.
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146 * @param dataArea the data area.
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147 * @param domainAxis the domain axis.
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148 * @param rangeAxis the range axis.
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149 * @param domainEdge the domain edge.
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150 * @param rangeEdge the range edge.
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151 * @param orientation the plot orientation.
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152 */
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153 protected void drawAxisMark(
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154 java.awt.Graphics2D g2,
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155 java.awt.geom.Rectangle2D dataArea,
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156 ValueAxis domainAxis,
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157 ValueAxis rangeAxis,
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158 RectangleEdge domainEdge,
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159 RectangleEdge rangeEdge,
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160 PlotOrientation orientation) {
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161 float j2DX1 = 0.0f;
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162 float j2DX2 = 0.0f;
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163 float j2DY1 = 0.0f;
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164 float j2DY2 = 0.0f;
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165 float x = (float) getX();
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166 float y = (float) getY();
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167 /* When dependent on X/Y-Axis and orientation, following
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168 can be used as a base:
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169 if (orientation == PlotOrientation.VERTICAL) {
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170 j2DX1 = (float) domainAxis.valueToJava2D(x, dataArea,
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171 domainEdge);
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172 j2DY1 = (float) rangeAxis.valueToJava2D(y, dataArea,
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173 rangeEdge);
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174 j2DX2 = (float) domainAxis.valueToJava2D(x, dataArea,
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175 domainEdge);
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176 j2DY2 = (float) rangeAxis.valueToJava2D(y, dataArea,
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177 rangeEdge);
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178 }
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179 else if (orientation == PlotOrientation.HORIZONTAL) {
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180 j2DY1 = (float) domainAxis.valueToJava2D(x, dataArea,
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181 domainEdge);
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182 j2DX1 = (float) rangeAxis.valueToJava2D(y, dataArea,
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183 rangeEdge);
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184 j2DY2 = (float) domainAxis.valueToJava2D(x, dataArea,
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185 domainEdge);
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186 j2DX2 = (float) rangeAxis.valueToJava2D(y, dataArea,
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187 rangeEdge);
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188 }
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189
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190 g2.setPaint(this.paint);
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191 g2.setStroke(this.stroke);
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192 */
1085
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193 if (this.stickyAxis == SimpleAxis.X_AXIS) {
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194 j2DY1 = (float) RectangleEdge.coordinate(dataArea, domainEdge);
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195 double rangeLow = rangeAxis.getRange().getLowerBound();
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196 // Line ends at 1.5% of full distance.
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197 j2DY2 = (float) rangeAxis.valueToJava2D(
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198 (1f - 0.015f) * rangeLow + 0.015f *
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199 rangeAxis.getRange().getUpperBound(),
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200 dataArea, rangeEdge);
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201 j2DX1 = (float) domainAxis.valueToJava2D(x, dataArea, domainEdge);
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202 j2DX2 = j2DX1;
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203 } else {
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204 j2DX1 = (float) RectangleEdge.coordinate(dataArea, rangeEdge);
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205 Range domainRange = domainAxis.getRange();
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206 double rangeLow = domainRange.getLowerBound();
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207 // Line ends at 1.5% of full distance.
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208 j2DX2 = (float) domainAxis.valueToJava2D(
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209 (1f - 0.015f) * rangeLow + 0.015f *
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210 domainRange.getUpperBound(),
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211 dataArea, domainEdge);
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212 j2DY1 = (float) rangeAxis.valueToJava2D(pos, dataArea, rangeEdge);
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213 j2DY2 = j2DY1;
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214 }
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215
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216 Line2D line = new Line2D.Float(j2DX1, j2DY1, j2DX2, j2DY2);
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217
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218 // line is clipped to avoid JRE bug 6574155, for more info
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219 // see JFreeChart bug 2221495
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220 boolean visible = LineUtilities.clipLine(line, dataArea);
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221 if (visible) {
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222 g2.draw(line);
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223 }
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224 }
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225
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226
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227 /**
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228 * Draw the Annotiation if it does not collide with other already drawn
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229 * Annotations.
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230 *
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231 * @param g2 the graphics device.
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232 * @param plot the plot.
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233 * @param dataArea the data area.
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234 * @param domainAxis the domain axis.
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235 * @param rangeAxis the range axis.
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236 * @param rendererIndex the render index.
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237 * @param info state information, escpecially collects info about
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238 * already drawn shapes (and thus annotations), used
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239 * for collision detection.
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240 */
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241 @Override
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242 public void draw(
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243 java.awt.Graphics2D g2,
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244 XYPlot plot,
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245 java.awt.geom.Rectangle2D dataArea,
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246 ValueAxis domainAxis,
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247 ValueAxis rangeAxis,
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248 int rendererIndex,
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249 PlotRenderingInfo info) {
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250
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251 if (info == null)
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252 return;
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253
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254 if (domainAxis == null || rangeAxis == null
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255 || domainAxis.getRange() == null
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256 || rangeAxis.getRange() == null
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257 ) {
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258 logger.error("Annotation cannot be drawn (missing axis).");
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259 return;
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260 }
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261
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262 // Calculate the bounding box.
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263 ChartRenderingInfo chartInfo = info.getOwner();
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264
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265 PlotOrientation orientation = plot.getOrientation();
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266 RectangleEdge domainEdge = Plot.resolveDomainAxisLocation(
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267 plot.getDomainAxisLocation(), orientation);
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268 RectangleEdge rangeEdge = Plot.resolveRangeAxisLocation(
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269 plot.getRangeAxisLocation(), orientation);
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270 float anchorX = 0f;
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271 float anchorY = 0.0f;
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272 if (this.stickyAxis == SimpleAxis.X_AXIS) {
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273 // Text starts at 1.5% of full distance.
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274 float rangeLow = (float) rangeAxis.getRange().getLowerBound();
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275 float y = rangeLow + 0.02f * ((float)
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276 rangeAxis.getRange().getUpperBound() - rangeLow);
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277 setY(y);
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278
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279 anchorX = (float) domainAxis.valueToJava2D(
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280 getX(), dataArea, domainEdge);
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281 anchorY = (float) rangeAxis.valueToJava2D(
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282 getY(), dataArea, rangeEdge);
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283 } else {
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284 float rangeLow = (float) domainAxis.getRange().getLowerBound();
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285 float x = rangeLow + 0.02f * ((float)
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286 domainAxis.getRange().getUpperBound() - rangeLow);
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287 setX(x);
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288 anchorX = (float) domainAxis.valueToJava2D(
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289 getX(), dataArea, domainEdge);
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290 anchorY = (float) rangeAxis.valueToJava2D(
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291 getY(), dataArea, rangeEdge);
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292 }
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293 if (orientation == PlotOrientation.HORIZONTAL) {
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294 float tempAnchor = anchorX;
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295 anchorX = anchorY;
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296 anchorY = tempAnchor;
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297 }
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298
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299 //Call to apply orientation.
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300 setStickyAxis(stickyAxis);
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301
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302 Shape hotspot = TextUtilities.calculateRotatedStringBounds(
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303 getText(), g2, anchorX, anchorY, getTextAnchor(),
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304 getRotationAngle(), getRotationAnchor());
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305 Rectangle2D hotspotBox = hotspot.getBounds2D();
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306 // Check for collisions with other XYAnnotations.
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307 for (Iterator i = chartInfo.getEntityCollection().iterator();
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308 i.hasNext(); ) {
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309 Object next = i.next();
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310 // Collision with other stuff than XYAnnotations are okay.
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311 if (next instanceof XYAnnotationEntity) {
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312 XYAnnotationEntity drawnShape = (XYAnnotationEntity) next;
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313 if (drawnShape.getArea().intersects(hotspotBox)) {
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314 // Found collision, early stop.
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315 return;
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316 }
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317 }
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318 }
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319
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320 // Draw the background.
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321 if (showBackground) {
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322 g2.setStroke(new BasicStroke ((float) 1));
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323 g2.setBackground(textBackground);
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324 g2.setPaint(textBackground);
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325 hotspot = TextUtilities.calculateRotatedStringBounds(
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326 getText(), g2, anchorX, anchorY, getTextAnchor(),
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327 getRotationAngle(), getRotationAnchor());
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328 g2.fill(hotspot);
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329 g2.draw(hotspot);
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330 }
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331
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332 // Always draw the small line at axis.
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333 setOutlineStroke(new BasicStroke((float) lineWidth));
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334 g2.setStroke(getOutlineStroke());
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335 g2.setPaint(lineColor);
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336 drawAxisMark(g2, dataArea, domainAxis, rangeAxis, domainEdge,
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337 rangeEdge, orientation);
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338
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339 // Draw the text.
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340 g2.setPaint(textColor);
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341 g2.setFont(font);
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342 TextUtilities.drawRotatedString(getText(), g2, anchorX, anchorY,
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343 getTextAnchor(), getRotationAngle(), getRotationAnchor());
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344
cf39205df113 Part of refactoring (see next commit).
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345 // Add info that we have drawn this Annotation.
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346 addEntity(info, hotspot, rendererIndex, getToolTipText(), getURL());
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347 }
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348
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349
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350 public void applyTheme(Document theme) {
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351 lineWidth = ThemeUtil.parseLineWidth(theme);
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352 lineColor = ThemeUtil.parseLineColorField(theme);
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353 textColor = ThemeUtil.parseTextColor(theme);
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diff changeset
354 font = ThemeUtil.parseTextFont(theme);
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355 textOrientation = ThemeUtil.parseTextOrientation(theme);
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356 textBackground = ThemeUtil.parseTextBackground(theme);
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357 showBackground = ThemeUtil.parseShowTextBackground(theme);
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358 }
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359 }
1711
f708120cb7bc Fix flys/issue363 (W-INFO/ Abflusskurve, Extremwert-Rendering).
Felix Wolfsteller <felix.wolfsteller@intevation.de>
parents: 1167
diff changeset
360 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org