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annotate src/java/de/intevation/mxd/writer/MapScriptWriter.java @ 43:ef7ca23c4233

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Added comments, done some code styling and removed typos.
author Raimund Renkert <rrenkert@intevation.de>
date Fri, 15 Apr 2011 15:44:54 +0200
parents 395307e8b7ee
children 9b5fb5e5914d
rev   line source
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1 package de.intevation.mxd.writer;
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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 org.w3c.dom.Document;
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6 import org.w3c.dom.Element;
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7 import org.w3c.dom.NodeList;
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8
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9 import javax.xml.xpath.XPathConstants;
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10 import java.awt.Color;
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11
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12 import edu.umn.gis.mapscript.mapObj;
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13 import edu.umn.gis.mapscript.layerObj;
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14 import edu.umn.gis.mapscript.classObj;
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15 import edu.umn.gis.mapscript.styleObj;
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16 import edu.umn.gis.mapscript.colorObj;
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17 import edu.umn.gis.mapscript.symbolObj;
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18 import edu.umn.gis.mapscript.symbolSetObj;
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19 import edu.umn.gis.mapscript.lineObj;
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20 import edu.umn.gis.mapscript.pointObj;
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21
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22 import edu.umn.gis.mapscript.MS_UNITS;
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23 import edu.umn.gis.mapscript.MS_LAYER_TYPE;
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24 import edu.umn.gis.mapscript.MS_SYMBOL_TYPE;
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25
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26 import de.intevation.mxd.utils.XMLUtils;
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27
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28 /**
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29 * The Mapfile Writer.
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30 * This Writer uses the MapScript Java API to create Mapfiles from a DOM.
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31 *
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32 * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a>
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33 */
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34 public class MapScriptWriter
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35 implements IWriter
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36 {
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37 /**
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38 * The Logger.
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39 */
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40 private static final Logger logger = Logger.getLogger(MapScriptWriter.class);
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41
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42 /**
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43 * Private member.
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44 */
41
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45 private Document root;
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46 private mapObj map;
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47
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48
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49 public MapScriptWriter() {
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50 map = new mapObj("");
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51 }
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52
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53 public MapScriptWriter(String path) {
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54 map = new mapObj(path);
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55 }
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56
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57 /**
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58 * Write the mapfile.
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59 * @param doc The root document containin the map attributes.
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60 *
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61 * @return Currently always true.
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62 */
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63 public boolean write(Document doc) {
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64 logger.debug("write()");
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65 this.root = doc;
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66
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67 //Get the filename.
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68 Element fileNode = (Element)XMLUtils.xpath(
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69 root,
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70 "/mxd/file",
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71 XPathConstants.NODE);
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72 String filename = fileNode.getAttribute("name");
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73 if(filename.endsWith(".mxd")) {
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74 filename = filename.replace(".mxd", ".map");
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75 }
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76 //Write the map attributes.
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77 writeMap();
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78 //Write the layers.
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79 writeLayer();
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80 //Save the map.
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81 mapObj cloneMap = map.cloneMap();
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82 cloneMap.save(filename);
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83 return true;
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84 }
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85
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86 /**
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87 * Create the map object and set the attributes.
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88 */
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89 private void writeMap() {
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90 logger.debug("writeMap()");
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91 //Get the map.
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92 Element mapNode = (Element)XMLUtils.xpath(
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93 root,
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94 "/mxd/map",
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95 XPathConstants.NODE);
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96
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97 //TODO Get the following values from a template.
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98 map.setShapepath("/home/intevation/mxd-testbed/testdata-frida");
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99 map.setHeight(700);
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100 map.setWidth(800);
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101 map.setProjection("EPSG:4326");
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102
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103 //Set the name.
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104 map.setName(mapNode.getAttribute("name"));
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105 map.setMetaData("wms_title", mapNode.getAttribute("name"));
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106 //Set the extent.
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107 map.setExtent(
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108 Double.parseDouble(mapNode.getAttribute("extent_min_x")),
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109 Double.parseDouble(mapNode.getAttribute("extent_min_y")),
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110 Double.parseDouble(mapNode.getAttribute("extent_max_x")),
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111 Double.parseDouble(mapNode.getAttribute("extent_max_y")));
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112
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113 //Set the units.
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114 String units = mapNode.getAttribute("units");
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115 MS_UNITS msu;
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116 if(units.equals("feet")) {
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117 msu = MS_UNITS.MS_FEET;
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118 }
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119 else if(units.equals("inches")) {
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120 msu = MS_UNITS.MS_INCHES;
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121 }
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122 else if(units.equals("kilometers")) {
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123 msu = MS_UNITS.MS_KILOMETERS;
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124 }
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125 else if(units.equals("meters")) {
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126 msu = MS_UNITS.MS_METERS;
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127 }
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128 else if(units.equals("miles")) {
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129 msu = MS_UNITS.MS_MILES;
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130 }
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131 else if(units.equals("nauticalmiles")) {
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132 msu = MS_UNITS.MS_NAUTICALMILES;
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133 }
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134 else if(units.equals("points")) {
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135 msu = MS_UNITS.MS_PIXELS;
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136 }
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137 else {
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138 msu = MS_UNITS.MS_DD;
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139 }
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140 map.setUnits(msu);
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141
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142 //TODO: Find out whats the correct scale value.
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143 //map.setScaledenom(Double.parseDouble(mapNode.getAttribute("scale")));
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144 }
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145
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146 /**
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147 * Create layer objects and set the attributes.
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148 */
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149 private void writeLayer() {
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150 logger.debug("writeLayer()");
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151 Element mapNode = (Element)XMLUtils.xpath(
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152 root,
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153 "/mxd/map",
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154 XPathConstants.NODE);
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155 NodeList list = mapNode.getElementsByTagName("layer");
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156 for(int i = 0; i < list.getLength(); i++) {
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157 Element layerElement = (Element)list.item(i);
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158 layerObj layer = new layerObj(map);
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159
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160 //The layer name.
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161 layer.setName(layerElement.getAttribute("name"));
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162
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163 //The layer status.
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164 String stat = layerElement.getAttribute("status");
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165 if (stat.equals("on")) {
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166 layer.setStatus(1);
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167 }
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168 else {
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169 layer.setStatus(0);
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170 }
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171
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172 //The scale.
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173 double maxScale =
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174 Double.parseDouble(layerElement.getAttribute("max_scale"));
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175 double minScale =
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176 Double.parseDouble(layerElement.getAttribute("min_scale"));
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177 layer.setMaxscaledenom(maxScale);
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178 layer.setMinscaledenom(minScale);
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179
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180 //The layer type.
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181 String type = layerElement.getAttribute("type");
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182 if(type.equals("point")) {
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183 layer.setType(MS_LAYER_TYPE.MS_LAYER_POINT);
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184 }
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185
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186 //The layer datasource.
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187 layer.setData(layerElement.getAttribute("data_source"));
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188
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189 //Write classes.
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190 writeClass(layer, layerElement);
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191 }
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192
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193 }
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194
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195 /**
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196 * Adds the classes to the layer.
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197 * @param layer Mapscript layer object.
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198 * @param layerElement Dom element containing the class attributes.
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199 */
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200 private void writeClass(layerObj layer, Element layerElement) {
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201 //Get all renderer elements (renderer in arcgis equals class in the
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202 //mapfile.)
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203 NodeList list = layerElement.getElementsByTagName("renderer");
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204
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205 //Create all found class objects and write the symbols and styles for
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206 //each class.
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207 for(int i = 0; i < list.getLength(); i++) {
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208 Element classElement = (Element)list.item(i);
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209 classObj co = new classObj(layer);
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210 co.setName(classElement.getAttribute("name"));
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211 //Write symbols and styles.
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212 writeSymbol(co, classElement);
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213 }
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214 }
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215
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216 /**
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217 * Adds the symbols and styles to the mapfile.
42
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218 * @param co Mapscript class object.
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219 * @param classElement Dom element containing the style and symbol
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220 * attributes.
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221 */
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222 private void writeSymbol(classObj co, Element classElement) {
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223 //Get all symbol elements from dom.
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224 NodeList list = classElement.getElementsByTagName("symbol");
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225
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226 //Get the symbol set from the map object.
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227 symbolSetObj symbolSet = map.getSymbolset();
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228
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229 //
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230 for(int i = 0; i < list.getLength(); i++){
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231 Element symbolElement = (Element) list.item(i);
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232 styleObj style = new styleObj(co);
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233 style.setAngle(
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234 Double.parseDouble(symbolElement.getAttribute("angle")));
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235 String c = symbolElement.getAttribute("color");
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236 Color col = Color.decode(c);
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237 colorObj color = new colorObj(
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238 col.getRed(),
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239 col.getGreen(),
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240 col.getBlue(),
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241 -4);
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242 style.setColor(color);
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243 style.setSize(Double.parseDouble(
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244 symbolElement.getAttribute("size")));
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245 Color oCol = Color.decode(
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246 symbolElement.getAttribute("outline_color"));
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247 colorObj outlineColor = new colorObj(
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248 oCol.getRed(),
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249 oCol.getGreen(),
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250 oCol.getBlue(),
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251 -4);
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252 style.setOutlinecolor(outlineColor);
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253 style.setOutlinewidth(Double.parseDouble(
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254 symbolElement.getAttribute("outline_size")));
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255
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256 String name = symbolElement.getAttribute("name");
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257 style.setSymbolByName(map, name);
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258 symbolObj sym = symbolSet.getSymbolByName(name);
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259
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260 String symType = symbolElement.getAttribute("style");
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261 if(symType.equals("point")) {
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262 lineObj points = new lineObj();
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263 points.add(new pointObj(1,1,0));
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264 sym.setType(MS_SYMBOL_TYPE.MS_SYMBOL_ELLIPSE.swigValue());
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265 sym.setPoints(points);
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266 sym.setFilled(1);
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267 }
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268 }
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269 saveSymbolSet(symbolSet);
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270 }
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271
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272 /**
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273 * Save the symbol set.
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274 * @param symbols The symbol set.
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275 */
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276 private void saveSymbolSet(symbolSetObj symbols) {
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277 Element fileNode = (Element)XMLUtils.xpath(
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278 root,
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279 "/mxd/file",
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280 XPathConstants.NODE);
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281 String filename = fileNode.getAttribute("name");
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282 String path = "";
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283 if(filename.contains("/")) {
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284 path = filename.substring(0, filename.lastIndexOf("/"));
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285 }
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286 else if(filename.contains("\\")) {
395307e8b7ee First MapScript Writer that generates valid mapfiles.
Raimund Renkert <rrenkert@intevation.de>
parents: 41
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287 path = filename.substring(0, filename.lastIndexOf("\\"));
395307e8b7ee First MapScript Writer that generates valid mapfiles.
Raimund Renkert <rrenkert@intevation.de>
parents: 41
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288 }
395307e8b7ee First MapScript Writer that generates valid mapfiles.
Raimund Renkert <rrenkert@intevation.de>
parents: 41
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289 symbols.save(path + "/symbols.sym");
395307e8b7ee First MapScript Writer that generates valid mapfiles.
Raimund Renkert <rrenkert@intevation.de>
parents: 41
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290 }
41
60ed2164035a Introduced MapScript writer.
Raimund Renkert <rrenkert@intevation.de>
parents:
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291 }
60ed2164035a Introduced MapScript writer.
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parents:
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292
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