root / branches / v2_0_0_prep / libraries / org.gvsig.symbology / org.gvsig.symbology.lib / org.gvsig.symbology.lib.impl / src / main / java / org / gvsig / symbology / fmap / mapcontext / rendering / symbol / line / impl / PictureLineSymbol.java @ 38401
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1 | 34294 | fdiaz | /* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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2 | *
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3 | * Copyright (C) 2005 IVER T.I. and Generalitat Valenciana.
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4 | *
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5 | * This program is free software; you can redistribute it and/or
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6 | * modify it under the terms of the GNU General Public License
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7 | * as published by the Free Software Foundation; either version 2
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8 | * of the License, or (at your option) any later version.
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9 | *
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10 | * This program is distributed in the hope that it will be useful,
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11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 | * GNU General Public License for more details.
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14 | *
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15 | * You should have received a copy of the GNU General Public License
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16 | * along with this program; if not, write to the Free Software
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17 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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18 | *
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19 | * For more information, contact:
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20 | *
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21 | * Generalitat Valenciana
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22 | * Conselleria d'Infraestructures i Transport
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23 | * Av. Blasco Ib??ez, 50
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24 | * 46010 VALENCIA
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25 | * SPAIN
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26 | *
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27 | * +34 963862235
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28 | * gvsig@gva.es
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29 | * www.gvsig.gva.es
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30 | *
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31 | * or
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32 | *
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33 | * IVER T.I. S.A
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34 | * Salamanca 50
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35 | * 46005 Valencia
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36 | * Spain
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37 | *
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38 | * +34 963163400
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39 | * dac@iver.es
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40 | */
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41 | package org.gvsig.symbology.fmap.mapcontext.rendering.symbol.line.impl; |
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42 | |||
43 | import java.awt.BasicStroke; |
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44 | import java.awt.Color; |
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45 | import java.awt.Graphics2D; |
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46 | import java.awt.Rectangle; |
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47 | 38401 | jldominguez | import java.awt.Shape; |
48 | 34294 | fdiaz | import java.awt.geom.AffineTransform; |
49 | import java.awt.geom.PathIterator; |
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50 | import java.awt.geom.Point2D; |
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51 | import java.io.IOException; |
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52 | import java.net.URL; |
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53 | |||
54 | import org.apache.batik.ext.awt.geom.PathLength; |
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55 | import org.gvsig.compat.print.PrintAttributes; |
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56 | import org.gvsig.fmap.dal.feature.Feature; |
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57 | import org.gvsig.fmap.geom.Geometry; |
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58 | import org.gvsig.fmap.mapcontext.MapContextLocator; |
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59 | import org.gvsig.fmap.mapcontext.ViewPort; |
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60 | import org.gvsig.fmap.mapcontext.rendering.symbols.ISymbol; |
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61 | import org.gvsig.fmap.mapcontext.rendering.symbols.SymbolDrawingException; |
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62 | import org.gvsig.fmap.mapcontext.rendering.symbols.SymbolManager; |
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63 | import org.gvsig.i18n.Messages; |
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64 | import org.gvsig.symbology.fmap.mapcontext.rendering.symbol.impl.CartographicSupportToolkit; |
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65 | import org.gvsig.symbology.fmap.mapcontext.rendering.symbol.line.IPictureLineSymbol; |
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66 | import org.gvsig.symbology.fmap.mapcontext.rendering.symbol.style.BackgroundFileStyle; |
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67 | import org.gvsig.tools.ToolsLocator; |
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68 | import org.gvsig.tools.dynobject.DynStruct; |
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69 | import org.gvsig.tools.persistence.PersistenceManager; |
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70 | import org.gvsig.tools.persistence.PersistentState; |
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71 | import org.gvsig.tools.persistence.exception.PersistenceException; |
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72 | import org.gvsig.tools.task.Cancellable; |
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73 | import org.gvsig.tools.util.Callable; |
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74 | import org.slf4j.Logger; |
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75 | import org.slf4j.LoggerFactory; |
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76 | |||
77 | |||
78 | /**
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79 | * PictureLineSymbol allows to use any symbol defined as an image (by an image file)
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80 | * supported by gvSIG.This symbol will be used as an initial object.The line will be
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81 | * painted as a succession of puntual symbols through the path defined by it(the line).
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82 | *
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83 | * @author jaume dominguez faus - jaume.dominguez@iver.es
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84 | */
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85 | public class PictureLineSymbol extends AbstractLineSymbol implements IPictureLineSymbol { |
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86 | |||
87 | private static final Logger logger = LoggerFactory.getLogger(PictureLineSymbol.class); |
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88 | |||
89 | public static final String PICTURE_LINE_SYMBOL_PERSISTENCE_DEFINITION_NAME = |
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90 | "PictureLineSymbol";
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91 | private static final String SELECTED = "selected"; |
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92 | private static final String SELECTION_SYMBOL = "selectionSym"; |
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93 | private static final String BACKGROUND_IMAGE = "bgImage"; |
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94 | private static final String BACKGROUND_SELECTION_IMAGE = "bgSelImage"; |
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95 | |||
96 | transient private PictureLineSymbol selectionSym; |
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97 | private double width; |
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98 | private boolean selected; |
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99 | private double xScale = 1, csXScale = xScale; |
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100 | private double yScale = 1, csYScale = yScale; |
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101 | |||
102 | private BackgroundFileStyle bgImage;
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103 | private BackgroundFileStyle bgSelImage;
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104 | private PrintAttributes properties;
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105 | |||
106 | /**
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107 | * Constructor method
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108 | *
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109 | */
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110 | public PictureLineSymbol() {
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111 | super();
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112 | } |
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113 | /**
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114 | * Constructor method
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115 | * @param imageURL, URL of the normal image
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116 | * @param selImageURL, URL of the image when it is selected in the map
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117 | * @throws IOException
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118 | */
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119 | |||
120 | public PictureLineSymbol(URL imageURL, URL selImageURL) throws IOException { |
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121 | setImage(imageURL); |
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122 | if (selImageURL!=null) |
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123 | setSelImage(selImageURL); |
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124 | else setSelImage(imageURL);
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125 | } |
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126 | /**
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127 | * Sets the URL for the image to be used as a picture line symbol
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128 | * @param imageFile, File
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129 | * @throws IOException
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130 | */
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131 | public void setImage(URL imageUrl) throws IOException{ |
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132 | |||
133 | bgImage= BackgroundFileStyle.createStyleByURL(imageUrl); |
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134 | } |
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135 | /**
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136 | * Sets the URL for the image to be used as a picture line symbol (when it is selected in the map)
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137 | * @param imageFile, File
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138 | * @throws IOException
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139 | */
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140 | public void setSelImage(URL selImageUrl) throws IOException{ |
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141 | |||
142 | bgSelImage= BackgroundFileStyle.createStyleByURL(selImageUrl); |
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143 | } |
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144 | |||
145 | |||
146 | public void setLineWidth(double width) { |
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147 | this.width = width;
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148 | getLineStyle().setLineWidth((float) width);
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149 | } |
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150 | |||
151 | public double getLineWidth() { |
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152 | return width;
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153 | } |
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154 | |||
155 | public ISymbol getSymbolForSelection() {
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156 | if (selectionSym == null) { |
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157 | selectionSym = (PictureLineSymbol) cloneForSelection(); |
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158 | selectionSym.selected=true;
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159 | selectionSym.selectionSym = selectionSym; // avoid too much lazy creations
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160 | |||
161 | } |
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162 | return selectionSym;
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163 | |||
164 | } |
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165 | |||
166 | public void draw(Graphics2D g, AffineTransform affineTransform, Geometry geom, Feature f, Cancellable cancel) { |
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167 | draw(g, affineTransform, geom, cancel); |
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168 | } |
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169 | |||
170 | private void draw(Graphics2D g, AffineTransform affineTransform, Geometry geom, Cancellable cancel) { |
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171 | 38401 | jldominguez | |
172 | if (csXScale<=0 && csYScale<=0) { |
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173 | return;
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174 | } |
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175 | |||
176 | float csWidth = getLineStyle().getLineWidth();
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177 | |||
178 | BasicStroke bs = new BasicStroke( |
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179 | (float) csWidth,
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180 | BasicStroke.CAP_ROUND,
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181 | BasicStroke.CAP_ROUND);
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182 | |||
183 | Shape geom_transf_clip = geom.getShape(affineTransform);
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184 | g.setClip(bs.createStrokedShape(geom_transf_clip)); |
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185 | |||
186 | 34294 | fdiaz | BackgroundFileStyle bg = (!selected) ? bgImage : bgSelImage ; |
187 | |||
188 | Rectangle bounds = bg.getBounds();
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189 | final double imageWidth = bounds.getWidth() * csXScale; |
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190 | final double imageHeight = bounds.getHeight() * csYScale; |
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191 | |||
192 | if (imageWidth==0 || imageHeight==0) return; |
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193 | int height = (int) csWidth; |
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194 | |||
195 | 38401 | jldominguez | PathLength pl = new PathLength(geom_transf_clip);
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196 | PathIterator iterator = geom_transf_clip.getPathIterator(null, 0.8); |
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197 | 34294 | fdiaz | double[] theData = new double[6]; |
198 | Point2D firstPoint = null, startPoint = null, endPoint = null; |
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199 | if (!iterator.isDone()) {
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200 | if ( iterator.currentSegment(theData) != PathIterator.SEG_CLOSE) { |
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201 | firstPoint = new Point2D.Double(theData[0], theData[1]); |
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202 | } |
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203 | } |
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204 | float currentPathLength = 1; |
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205 | |||
206 | Rectangle rect = new Rectangle(); |
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207 | |||
208 | while ((cancel==null || !cancel.isCanceled()) && !iterator.isDone()) { |
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209 | |||
210 | int theType = iterator.currentSegment(theData);
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211 | switch (theType) {
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212 | case PathIterator.SEG_MOVETO: |
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213 | startPoint = new Point2D.Double(theData[0], theData[1]); |
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214 | |||
215 | endPoint = null;
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216 | iterator.next(); |
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217 | |||
218 | continue;
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219 | |||
220 | case PathIterator.SEG_LINETO: |
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221 | case PathIterator.SEG_QUADTO: |
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222 | case PathIterator.SEG_CUBICTO: |
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223 | endPoint = new Point2D.Double(theData[0], theData[1]); |
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224 | |||
225 | break;
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226 | case PathIterator.SEG_CLOSE: |
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227 | endPoint = startPoint; |
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228 | startPoint = firstPoint; |
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229 | break;
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230 | } |
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231 | |||
232 | double a = endPoint.getX() - startPoint.getX();
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233 | double b = endPoint.getY() - startPoint.getY();
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234 | double theta = pl.angleAtLength(currentPathLength);
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235 | |||
236 | double x = startPoint.getX();
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237 | double y = startPoint.getY();
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238 | |||
239 | // Theorem of Pythagoras
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240 | float segmentLength = (float) Math.sqrt(a*a + b*b); |
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241 | |||
242 | // compute how many times the image has to be drawn
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243 | // to completely cover this segment's length
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244 | int count = (int) Math.ceil(segmentLength/imageWidth); |
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245 | |||
246 | for (int i = 0; (cancel==null || !cancel.isCanceled()) && i < count; i++) { |
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247 | g.translate(x, y); |
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248 | g.rotate(theta); |
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249 | |||
250 | double xOffsetTranslation = imageWidth*i;
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251 | g.translate(xOffsetTranslation, -csWidth); |
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252 | |||
253 | rect.setBounds(0, (int) Math.round(height*.5), (int) Math.ceil(imageWidth), height); |
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254 | try {
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255 | bg.drawInsideRectangle(g, rect, false);
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256 | } catch (SymbolDrawingException e) {
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257 | logger.warn(Messages.getText("label_style_could_not_be_painted"), e);
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258 | } |
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259 | g.translate(-xOffsetTranslation, csWidth); |
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260 | |||
261 | g.rotate(-theta); |
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262 | g.translate(-x, -y); |
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263 | } |
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264 | |||
265 | startPoint = endPoint; |
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266 | currentPathLength += segmentLength; |
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267 | iterator.next(); |
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268 | } |
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269 | g.setClip(null);
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270 | } |
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271 | |||
272 | /**
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273 | * Sets the yscale for the picture line symbol
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274 | * @param yScale
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275 | */
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276 | public void setYScale(double yScale) { |
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277 | this.yScale = yScale;
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278 | this.csYScale = yScale;
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279 | } |
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280 | /**
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281 | * Sets the xscale for the picture line symbol
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282 | * @param xScale
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283 | */
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284 | public void setXScale(double xScale) { |
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285 | this.xScale = xScale;
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286 | this.csXScale = xScale;
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287 | } |
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288 | |||
289 | public String getClassName() { |
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290 | return getClass().getName();
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291 | } |
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292 | |||
293 | public void print(Graphics2D g, AffineTransform at, Geometry geom, |
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294 | PrintAttributes properties) { |
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295 | this.properties=properties;
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296 | draw(g, at, geom, null);
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297 | this.properties=null; |
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298 | |||
299 | } |
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300 | |||
301 | /**
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302 | * Returns the URL of the image that is used as a picture line symbol (when it
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303 | * is selected in the map)
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304 | * @return selimagePath,URL
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305 | */
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306 | public URL getSelectedSource(){ |
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307 | return bgSelImage.getSource();
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308 | } |
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309 | /**
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310 | * Returns the URL of the image that is used as a picture line symbol
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311 | * @return imagePath,URL
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312 | */
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313 | public URL getSource() { |
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314 | return bgImage.getSource();
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315 | } |
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316 | |||
317 | /**
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318 | * Returns the xscale for the picture line symbol
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319 | * @param xScale
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320 | */
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321 | public double getXScale() { |
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322 | return xScale;
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323 | } |
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324 | /**
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325 | * Returns the yscale for the picture line symbol
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326 | * @param yScale
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327 | */
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328 | public double getYScale() { |
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329 | return yScale;
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330 | } |
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331 | |||
332 | @Override
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333 | public void setCartographicSize(double cartographicSize, Geometry geom) { |
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334 | getLineStyle().setLineWidth((float) cartographicSize);
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335 | double scale = cartographicSize/width;
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336 | csXScale = xScale * scale; |
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337 | csYScale = yScale * scale; |
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338 | } |
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339 | |||
340 | @Override
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341 | public double toCartographicSize(ViewPort viewPort, double dpi, Geometry geom) { |
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342 | double s = super.toCartographicSize(viewPort, dpi, geom); |
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343 | setCartographicSize(CartographicSupportToolkit. |
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344 | getCartographicLength(this, width, viewPort, dpi), geom);
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345 | return s;
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346 | } |
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347 | |||
348 | |||
349 | public Object clone() throws CloneNotSupportedException { |
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350 | PictureLineSymbol copy = (PictureLineSymbol) super.clone();
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351 | |||
352 | // clone selection
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353 | if (selectionSym != null) { |
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354 | //to avoid an infinite loop
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355 | if (this == selectionSym){ |
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356 | copy.selectionSym = copy; |
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357 | } else {
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358 | copy.selectionSym = (PictureLineSymbol) selectionSym.clone(); |
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359 | } |
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360 | } |
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361 | |||
362 | // clone brackground image
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363 | if (bgImage != null) { |
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364 | copy.bgImage = (BackgroundFileStyle) bgImage.clone(); |
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365 | } |
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366 | |||
367 | // clone selection brackground image
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368 | if (bgSelImage != null) { |
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369 | copy.bgSelImage = (BackgroundFileStyle) bgSelImage.clone(); |
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370 | } |
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371 | |||
372 | // FIXME: clone properties
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373 | |||
374 | return copy;
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375 | } |
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376 | |||
377 | public void loadFromState(PersistentState state) throws PersistenceException { |
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378 | // Set parent style properties
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379 | super.loadFromState(state);
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380 | |||
381 | this.selected = (Boolean) state.get(SELECTED); |
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382 | this.selectionSym = (PictureLineSymbol) state.get(SELECTION_SYMBOL);
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383 | this.bgImage = (BackgroundFileStyle) state.get(BACKGROUND_IMAGE);
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384 | this.bgSelImage =
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385 | (BackgroundFileStyle) state.get(BACKGROUND_SELECTION_IMAGE); |
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386 | } |
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387 | |||
388 | public void saveToState(PersistentState state) throws PersistenceException { |
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389 | // Save parent fill symbol properties
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390 | super.saveToState(state);
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391 | |||
392 | // Save own properties
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393 | state.set(SELECTED, this.selected);
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394 | state.set(SELECTION_SYMBOL, this.getSymbolForSelection());
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395 | state.set(BACKGROUND_IMAGE, this.bgImage);
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396 | state.set(BACKGROUND_SELECTION_IMAGE, this.bgSelImage);
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397 | } |
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398 | |||
399 | public static class RegisterPersistence implements Callable { |
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400 | |||
401 | public Object call() throws Exception { |
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402 | PersistenceManager manager = ToolsLocator.getPersistenceManager(); |
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403 | if (manager.getDefinition(PICTURE_LINE_SYMBOL_PERSISTENCE_DEFINITION_NAME) == null) { |
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404 | DynStruct definition = |
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405 | manager.addDefinition(PictureLineSymbol.class, |
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406 | PICTURE_LINE_SYMBOL_PERSISTENCE_DEFINITION_NAME, |
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407 | PICTURE_LINE_SYMBOL_PERSISTENCE_DEFINITION_NAME |
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408 | + " Persistence definition",
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409 | null,
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410 | null);
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411 | |||
412 | // Extend the Style base definition
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413 | definition.extend(manager.getDefinition(LINE_SYMBOL_PERSISTENCE_DEFINITION_NAME)); |
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414 | |||
415 | definition.addDynFieldBoolean(SELECTED).setMandatory(false);
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416 | definition.addDynFieldObject(SELECTION_SYMBOL) |
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417 | .setClassOfValue(PictureLineSymbol.class).setMandatory(false);
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418 | definition.addDynFieldObject(BACKGROUND_IMAGE) |
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419 | .setClassOfValue(BackgroundFileStyle.class).setMandatory(false);
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420 | definition.addDynFieldObject(BACKGROUND_SELECTION_IMAGE) |
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421 | .setClassOfValue(BackgroundFileStyle.class).setMandatory(false);
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422 | } |
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423 | return Boolean.TRUE; |
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424 | } |
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425 | } |
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426 | |||
427 | public static class RegisterSymbol implements Callable { |
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428 | |||
429 | public Object call() throws Exception { |
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430 | SymbolManager manager = MapContextLocator.getSymbolManager(); |
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431 | |||
432 | 34297 | fdiaz | manager.registerSymbol(PICTURE_LINE_SYMBOL_PERSISTENCE_DEFINITION_NAME, |
433 | 34294 | fdiaz | PictureLineSymbol.class); |
434 | |||
435 | return Boolean.TRUE; |
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436 | } |
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437 | } |
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438 | } |