root / trunk / extensions / extSymbology / src / org / gvsig / symbology / fmap / symbols / PictureLineSymbol.java @ 20905
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1 | 20768 | jdominguez | /* 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.symbols; |
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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 | import java.awt.geom.AffineTransform; |
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48 | import java.awt.geom.PathIterator; |
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49 | import java.awt.geom.Point2D; |
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50 | import java.io.IOException; |
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51 | import java.net.MalformedURLException; |
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52 | import java.net.URL; |
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53 | |||
54 | import javax.print.attribute.PrintRequestAttributeSet; |
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55 | |||
56 | import org.apache.batik.ext.awt.geom.PathLength; |
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57 | import org.apache.log4j.Logger; |
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58 | import org.gvsig.symbology.fmap.styles.BackgroundFileStyle; |
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59 | |||
60 | import com.hardcode.gdbms.driver.exceptions.ReadDriverException; |
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61 | import com.iver.cit.gvsig.fmap.Messages; |
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62 | import com.iver.cit.gvsig.fmap.ViewPort; |
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63 | import com.iver.cit.gvsig.fmap.core.CartographicSupportToolkit; |
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64 | import com.iver.cit.gvsig.fmap.core.FPolyline2D; |
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65 | import com.iver.cit.gvsig.fmap.core.FShape; |
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66 | import com.iver.cit.gvsig.fmap.core.SymbologyFactory; |
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67 | import com.iver.cit.gvsig.fmap.core.symbols.AbstractLineSymbol; |
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68 | import com.iver.cit.gvsig.fmap.core.symbols.ISymbol; |
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69 | import com.iver.utiles.XMLEntity; |
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70 | import com.iver.utiles.swing.threads.Cancellable; |
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71 | |||
72 | /**
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73 | * PictureLineSymbol allows to use any symbol defined as an image (by an image file)
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74 | * supported by gvSIG.This symbol will be used as an initial object.The line will be
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75 | * painted as a succession of puntual symbols through the path defined by it(the line).
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76 | *
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77 | * @author jaume dominguez faus - jaume.dominguez@iver.es
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78 | */
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79 | public class PictureLineSymbol extends AbstractLineSymbol { |
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80 | // transient private BufferedImage img;
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81 | // transient private BufferedImage selImg;
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82 | transient private PictureLineSymbol selectionSym; |
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83 | private String selImagePath; |
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84 | private double width; |
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85 | private String imagePath; |
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86 | private boolean selected; |
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87 | private double xScale = 1, csXScale = xScale; |
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88 | private double yScale = 1, csYScale = yScale; |
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89 | |||
90 | private BackgroundFileStyle bgImage;
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91 | private BackgroundFileStyle bgSelImage;
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92 | /**
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93 | * Constructor method
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94 | *
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95 | */
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96 | public PictureLineSymbol() {
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97 | super();
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98 | } |
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99 | /**
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100 | * Constructor method
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101 | * @param imageURL, URL of the normal image
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102 | * @param selImageURL, URL of the image when it is selected in the map
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103 | * @throws IOException
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104 | */
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105 | |||
106 | public PictureLineSymbol(URL imageURL, URL selImageURL) throws IOException { |
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107 | setImage(imageURL); |
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108 | if (selImageURL!=null) |
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109 | setSelImage(selImageURL); |
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110 | else setSelImage(imageURL);
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111 | } |
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112 | /**
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113 | * Sets the URL for the image to be used as a picture line symbol
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114 | * @param imageFile, File
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115 | * @throws IOException
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116 | */
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117 | public void setImage(URL imageUrl) throws IOException{ |
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118 | |||
119 | bgImage= BackgroundFileStyle.createStyleByURL(imageUrl); |
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120 | imagePath = imageUrl.toString(); |
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121 | } |
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122 | /**
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123 | * 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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124 | * @param imageFile, File
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125 | * @throws IOException
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126 | */
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127 | public void setSelImage(URL selImageUrl) throws IOException{ |
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128 | |||
129 | bgSelImage= BackgroundFileStyle.createStyleByURL(selImageUrl); |
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130 | selImagePath = selImageUrl.toString(); |
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131 | } |
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132 | |||
133 | |||
134 | public void setLineWidth(double width) { |
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135 | this.width = width;
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136 | getLineStyle().setLineWidth((float) width);
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137 | } |
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138 | |||
139 | public double getLineWidth() { |
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140 | return width;
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141 | } |
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142 | |||
143 | public ISymbol getSymbolForSelection() {
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144 | if (selectionSym == null) { |
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145 | selectionSym = (PictureLineSymbol) SymbologyFactory.createSymbolFromXML(getXMLEntity(), getDescription()); |
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146 | selectionSym.selected=true;
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147 | selectionSym.selectionSym = selectionSym; // avoid too much lazy creations
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148 | |||
149 | } |
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150 | return selectionSym;
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151 | |||
152 | } |
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153 | |||
154 | public void draw(Graphics2D g, AffineTransform affineTransform, FShape shp, Cancellable cancel) { |
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155 | float csWidth = getLineStyle().getLineWidth();
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156 | g.setClip(new BasicStroke((float) csWidth, BasicStroke.CAP_ROUND,BasicStroke.CAP_ROUND).createStrokedShape(shp)); |
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157 | BackgroundFileStyle bg = (!selected) ? bgImage : bgSelImage ; |
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158 | |||
159 | if (csXScale<=0 && csYScale<=0) |
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160 | return;
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161 | |||
162 | Rectangle bounds = bg.getBounds();
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163 | final double imageWidth = bounds.getWidth() * csXScale; |
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164 | final double imageHeight = bounds.getHeight() * csYScale; |
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165 | |||
166 | if (imageWidth==0 || imageHeight==0) return; |
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167 | int height = (int) csWidth; |
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168 | |||
169 | PathLength pl = new PathLength(shp);
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170 | PathIterator iterator = ((FPolyline2D) shp).getPathIterator(null, 0.8); |
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171 | double[] theData = new double[6]; |
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172 | Point2D firstPoint = null, startPoint = null, endPoint = null; |
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173 | if (!iterator.isDone()) {
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174 | if ( iterator.currentSegment(theData) != PathIterator.SEG_CLOSE) { |
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175 | firstPoint = new Point2D.Double(theData[0], theData[1]); |
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176 | } |
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177 | } |
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178 | float currentPathLength = 1; |
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179 | |||
180 | Rectangle rect = new Rectangle(); |
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181 | |||
182 | while ((cancel==null || !cancel.isCanceled()) && !iterator.isDone()) { |
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183 | |||
184 | int theType = iterator.currentSegment(theData);
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185 | switch (theType) {
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186 | case PathIterator.SEG_MOVETO: |
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187 | startPoint = new Point2D.Double(theData[0], theData[1]); |
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188 | |||
189 | endPoint = null;
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190 | iterator.next(); |
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191 | |||
192 | continue;
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193 | |||
194 | case PathIterator.SEG_LINETO: |
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195 | case PathIterator.SEG_QUADTO: |
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196 | case PathIterator.SEG_CUBICTO: |
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197 | endPoint = new Point2D.Double(theData[0], theData[1]); |
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198 | |||
199 | break;
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200 | case PathIterator.SEG_CLOSE: |
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201 | endPoint = startPoint; |
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202 | startPoint = firstPoint; |
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203 | break;
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204 | } |
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205 | |||
206 | double a = endPoint.getX() - startPoint.getX();
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207 | double b = endPoint.getY() - startPoint.getY();
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208 | double theta = pl.angleAtLength(currentPathLength);
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209 | |||
210 | double x = startPoint.getX();
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211 | double y = startPoint.getY();
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212 | |||
213 | // Theorem of Pythagoras
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214 | float segmentLength = (float) Math.sqrt(a*a + b*b); |
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215 | |||
216 | // compute how many times the image has to be drawn
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217 | // to completely cover this segment's length
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218 | int count = (int) Math.ceil(segmentLength/imageWidth); |
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219 | |||
220 | for (int i = 0; (cancel==null || !cancel.isCanceled()) && i < count; i++) { |
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221 | g.translate(x, y); |
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222 | g.rotate(theta); |
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223 | |||
224 | double xOffsetTranslation = imageWidth*i;
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225 | |||
226 | |||
227 | g.translate(xOffsetTranslation, -csWidth); |
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228 | |||
229 | rect.setBounds(0, (int) Math.round(height*.5), (int) Math.ceil(imageWidth), height); |
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230 | bg.drawInsideRectangle(g, rect, false);
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231 | g.setColor(Color.red);
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232 | g.translate(-xOffsetTranslation, csWidth); |
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233 | |||
234 | g.rotate(-theta); |
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235 | g.translate(-x, -y); |
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236 | } |
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237 | |||
238 | startPoint = endPoint; |
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239 | currentPathLength += segmentLength; |
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240 | iterator.next(); |
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241 | } |
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242 | |||
243 | g.setClip(null);
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244 | g.setColor(Color.red);
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245 | |||
246 | } |
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247 | |||
248 | |||
249 | public XMLEntity getXMLEntity() {
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250 | XMLEntity xml = new XMLEntity();
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251 | xml.putProperty("className", getClassName());
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252 | xml.putProperty("isShapeVisible", isShapeVisible());
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253 | xml.putProperty("desc", getDescription());
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254 | xml.putProperty("imagePath", imagePath);
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255 | xml.putProperty("selImagePath", selImagePath);
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256 | xml.putProperty("lineWidth", getLineWidth());
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257 | xml.putProperty("xScale", getXScale());
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258 | xml.putProperty("yScale", getYScale());
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259 | |||
260 | // measure unit
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261 | xml.putProperty("unit", getUnit());
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262 | |||
263 | // reference system
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264 | xml.putProperty("referenceSystem", getReferenceSystem());
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265 | |||
266 | return xml;
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267 | |||
268 | } |
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269 | |||
270 | public void setXMLEntity(XMLEntity xml) { |
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271 | 20905 | jdominguez | System.out.println(this.getClass().getClassLoader()); |
272 | 20768 | jdominguez | setDescription(xml.getStringProperty("desc"));
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273 | setIsShapeVisible(xml.getBooleanProperty("isShapeVisible"));
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274 | imagePath = xml.getStringProperty("imagePath");
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275 | selImagePath = xml.getStringProperty("selImagePath");
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276 | setLineWidth(xml.getDoubleProperty("lineWidth"));
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277 | setXScale(xml.getDoubleProperty("xScale"));
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278 | setYScale(xml.getDoubleProperty("yScale"));
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279 | setReferenceSystem(xml.getIntProperty("referenceSystem"));
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280 | setUnit(xml.getIntProperty("unit"));
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281 | |||
282 | |||
283 | try {
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284 | setImage(new URL(imagePath)); |
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285 | setSelImage(new URL(selImagePath)); |
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286 | } catch (MalformedURLException e) { |
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287 | Logger.getLogger(getClass()).error(Messages.getString("invalid_url")); |
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288 | } catch (IOException e) { |
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289 | Logger.getLogger(getClass()).error(Messages.getString("invalid_url")); |
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290 | |||
291 | } |
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292 | |||
293 | } |
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294 | /**
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295 | * Sets the yscale for the picture line symbol
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296 | * @param yScale
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297 | */
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298 | public void setYScale(double yScale) { |
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299 | this.yScale = yScale;
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300 | this.csYScale = yScale;
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301 | } |
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302 | /**
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303 | * Sets the xscale for the picture line symbol
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304 | * @param xScale
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305 | */
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306 | public void setXScale(double xScale) { |
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307 | this.xScale = xScale;
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308 | this.csXScale = xScale;
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309 | } |
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310 | |||
311 | public String getClassName() { |
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312 | return getClass().getName();
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313 | } |
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314 | |||
315 | public void print(Graphics2D g, AffineTransform at, FShape shape, |
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316 | PrintRequestAttributeSet properties) throws ReadDriverException { |
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317 | // TODO Implement it
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318 | throw new Error("Not yet implemented!"); |
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319 | |||
320 | } |
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321 | /**
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322 | * Returns the path of the image that is used as a picture line symbol (when it
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323 | * is selected in the map)
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324 | * @return selimagePath,String
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325 | */
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326 | public String getSelImagePath() { |
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327 | return selImagePath;
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328 | } |
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329 | /**
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330 | * Returns the path of the image that is used as a picture line symbol
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331 | * @return imagePath,String
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332 | */
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333 | public String getImagePath() { |
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334 | return imagePath;
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335 | } |
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336 | /**
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337 | * Returns the xscale for the picture line symbol
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338 | * @param xScale
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339 | */
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340 | public double getXScale() { |
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341 | return xScale;
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342 | } |
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343 | /**
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344 | * Returns the yscale for the picture line symbol
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345 | * @param yScale
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346 | */
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347 | public double getYScale() { |
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348 | return yScale;
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349 | } |
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350 | |||
351 | @Override
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352 | public void setCartographicSize(double cartographicSize, FShape shp) { |
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353 | getLineStyle().setLineWidth((float) cartographicSize);
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354 | double scale = cartographicSize/width;
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355 | csXScale = xScale * scale; |
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356 | csYScale = yScale * scale; |
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357 | } |
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358 | |||
359 | @Override
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360 | public double toCartographicSize(ViewPort viewPort, double dpi, FShape shp) { |
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361 | double s = super.toCartographicSize(viewPort, dpi, shp); |
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362 | setCartographicSize(CartographicSupportToolkit. |
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363 | getCartographicLength(this, width, viewPort, dpi), shp);
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364 | return s;
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365 | } |
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366 | } |