annotate src/java/de/intevation/mxd/writer/SymbolWriter.java @ 181:0bde090506f9

Added comments.
author Raimund Renkert <rrenkert@intevation.de>
date Mon, 11 Jul 2011 14:28:38 +0200
parents d95dbd643add
children c79c3c6fc99a
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.Element;
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6
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7 import edu.umn.gis.mapscript.mapObj;
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8 import edu.umn.gis.mapscript.classObj;
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9 import edu.umn.gis.mapscript.styleObj;
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10 import edu.umn.gis.mapscript.symbolObj;
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11 import edu.umn.gis.mapscript.symbolSetObj;
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12 import edu.umn.gis.mapscript.lineObj;
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13 import edu.umn.gis.mapscript.pointObj;
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14 import edu.umn.gis.mapscript.MS_SYMBOL_TYPE;
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15
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16 import java.io.File;
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17
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18 /**
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19 * The interface to the mapfile writer.
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20 *
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21 * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a>
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22 */
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23 public class SymbolWriter {
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24
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25 /**
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26 * The Logger.
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27 */
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28 private static final Logger logger = Logger.getLogger(SymbolWriter.class);
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29
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30 /**
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31 * Private member.
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32 */
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33 private mapObj map;
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34 private classObj cl;
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35
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36 /**
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37 * Contructor with map object and class object.
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38 *
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39 * @param map The map object.
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40 * @param cl The class object containing the style.
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41 */
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42 public SymbolWriter (mapObj map, classObj cl) {
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43 this.map = map;
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44 this.cl = cl;
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45 }
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46
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47 /**
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48 * Write the content.
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49 *
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50 * @param symbolElement DOM element containg the style and symbol
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51 * attributes.
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52 */
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53 public boolean write(Element symbolElement) {
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54 logger.debug("write(Element)");
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55 symbolSetObj symbolSet = map.getSymbolset();
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56
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57 String name = symbolElement.getAttribute("name");
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58 symbolObj sym = symbolSet.getSymbolByName(name);
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59 String symType = symbolElement.getAttribute("style");
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60 String type = symbolElement.getAttribute("type");
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61 if(symType.equals("point")) {
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62 writeSimple(sym);
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63 }
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64 else if (symType.equals("arrow")) {
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65 writeArrow(sym, symbolElement);
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66 }
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67 else if (symType.equals("char")) {
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68 int exists = symbolExists(symbolElement);
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69 if(exists == -1) {
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70 String old = symbolElement.getAttribute("name");
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71 symbolElement.setAttribute(
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72 "name",
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73 old + symbolSet.getNumsymbols() + 1);
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74 writeCharacter(sym, symbolElement);
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75 }
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76 else {
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77 symbolElement.setAttribute(
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78 "name",
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79 symbolSet.getSymbol(exists).getName());
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80 }
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81 }
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82 else if (type.equals("line")) {
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83 writeHatch(sym);
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84 }
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85 else {
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86 return false;
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87 }
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88
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89 try {
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90 saveSymbolSet(symbolSet);
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91 }
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92 catch(Exception e) {
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93 logger.error("Error saving symbol set.");
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94 return false;
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95 }
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96
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97 return true;
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98 }
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99
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100 /**
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101 * Create a simple point symbol.
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102 *
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103 * @param symbol The symbol object.
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104 */
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105 private void writeSimple(symbolObj symbol) {
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106 logger.debug("writeSimple(symbolObj)");
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107 lineObj points = new lineObj();
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108 points.add(new pointObj(1,1,0));
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109 symbol.setType(MS_SYMBOL_TYPE.MS_SYMBOL_ELLIPSE.swigValue());
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110 symbol.setPoints(points);
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111 symbol.setFilled(1);
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112 }
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113
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114 /**
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115 * Create an arrow symbol.
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116 *
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117 * @param symbol The symbol object.
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118 * @param symbolElement DOM element containing symbol attributes.
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119 */
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120 private void writeArrow(symbolObj symbol, Element symbolElement) {
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121 logger.debug("writeArrow(symbolObj, Element)");
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122 double len = 0;
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123 double width = 1;
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124 try {
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125 len =
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126 Double.parseDouble(symbolElement.getAttribute("length"));
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127 width =
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128 Double.parseDouble(symbolElement.getAttribute("width"));
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129 }
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130 catch(NumberFormatException nfe) {
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131 logger.warn ("Error setting arrow symbol.");
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132 return;
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133 }
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134 double ratio = len/width;
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135 lineObj points = new lineObj();
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136
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137 points.add(new pointObj(0, 0, 0));
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138 points.add(new pointObj((1*ratio), 0.5, 0));
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139 points.add(new pointObj(0, 1, 0));
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140 points.add(new pointObj(0, 0, 0));
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diff changeset
141 symbol.setType(MS_SYMBOL_TYPE.MS_SYMBOL_VECTOR.swigValue());
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142 symbol.setPoints(points);
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143 symbol.setFilled(1);
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144 }
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145
181
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146 /**
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147 * Create a character marker symbol.
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148 *
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149 * @param symbol The symbol object.
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150 * @param symbolElement DOM element containing symbol attributes.
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151 */
87
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152 private void writeCharacter(symbolObj symbol, Element symbolElement) {
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153 logger.debug("writeCharacter(symbolObj, Element)");
93
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154 String font = symbolElement.getAttribute("font");
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155 //Remove all blank character to match the mapserver fonts.txt.
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156 font = font.replaceAll(" ", "");
141
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157 symbol.setName(symbolElement.getAttribute("name"));
93
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158 symbol.setFont(font);
87
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159 symbol.setType(MS_SYMBOL_TYPE.MS_SYMBOL_TRUETYPE.swigValue());
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160 symbol.setAntialias(1);
93
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161 symbol.setCharacter("&#" + symbolElement.getAttribute("char") + ";");
87
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162 }
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163
181
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164 /**
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165 * Create a hatch symbol for polygon fill.
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166 *
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167 * @param symbol The symbol object.
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168 */
97
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169 private void writeHatch(symbolObj symbol) {
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170 logger.debug("writeHatch(symbolObj)");
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diff changeset
171 symbol.setType(MS_SYMBOL_TYPE.MS_SYMBOL_HATCH.swigValue());
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172 }
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173
181
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174 /**
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175 * Determine whether this writer can create the symbol.
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176 *
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177 * @param type The symbol type.
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178 */
87
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179 public boolean canWrite(String type) {
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180 if (type.equals("point") ||
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181 type.equals("arrow") ||
97
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182 type.equals("char") ||
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183 type.equals("line")) {
87
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184 return true;
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185 }
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186 else {
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187 return false;
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188 }
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189 }
90
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190
181
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191 /**
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192 * Save the symbol set.
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193 *
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194 * @param symbols The symbol set object.
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195 */
90
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196 private void saveSymbolSet(symbolSetObj symbols)
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197 throws Exception {
93
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198 String path = this.map.getMappath();
175
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199 String symbolPath = symbols.getFilename();
90
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diff changeset
200 if(path.equals("")) {
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diff changeset
201 return;
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202 }
175
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203 if(symbolPath == null || symbolPath.equals("")) {
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diff changeset
204 symbolPath = "symbols.sym";
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parents: 174
diff changeset
205 symbols.setFilename(symbolPath);
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parents: 174
diff changeset
206 path = path.replaceAll("\\\\", "/");
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parents: 174
diff changeset
207 symbols.save(path);
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parents: 174
diff changeset
208 this.map.setSymbolSet(path);
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diff changeset
209 return;
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parents: 174
diff changeset
210 }
174
707f13cfba74 Improved the commandline arguments and save the mapfile in the correct directory.
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diff changeset
211
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parents: 145
diff changeset
212 if (path.endsWith(".map")) {
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diff changeset
213 path = path.substring(0, path.lastIndexOf(File.separator) + 1);
175
f11d13940626 Handle symbol set and font set paths.
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parents: 174
diff changeset
214 path += symbolPath;
174
707f13cfba74 Improved the commandline arguments and save the mapfile in the correct directory.
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diff changeset
215 }
93
3993b5adf67c Write the character symbol correctly to the mapfile and the symbolset.
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diff changeset
216 else {
175
f11d13940626 Handle symbol set and font set paths.
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diff changeset
217 path += symbolPath;
90
82a1f39214fd Added method to save the symbolset.
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parents: 87
diff changeset
218 }
175
f11d13940626 Handle symbol set and font set paths.
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parents: 174
diff changeset
219 path = path.replaceAll("\\\\", "/");
90
82a1f39214fd Added method to save the symbolset.
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parents: 87
diff changeset
220 symbols.save(path);
175
f11d13940626 Handle symbol set and font set paths.
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parents: 174
diff changeset
221 this.map.setSymbolSet(symbolPath);
90
82a1f39214fd Added method to save the symbolset.
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diff changeset
222 }
141
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diff changeset
223
181
0bde090506f9 Added comments.
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parents: 176
diff changeset
224 /**
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parents: 176
diff changeset
225 * Determine whether the symbol exists.
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parents: 176
diff changeset
226 *
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parents: 176
diff changeset
227 * @param elem DOM element containing the symbol attributes.
0bde090506f9 Added comments.
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parents: 176
diff changeset
228 *
0bde090506f9 Added comments.
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parents: 176
diff changeset
229 * @return Returns the symbol index if the symbol exists, else returns -1.
0bde090506f9 Added comments.
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parents: 176
diff changeset
230 */
141
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diff changeset
231 private int symbolExists (Element elem) {
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diff changeset
232 symbolSetObj symbolSet = map.getSymbolset();
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diff changeset
233 for (int i = 0; i < symbolSet.getNumsymbols(); i++) {
8f30f7e802d6 Manage symbol names and symbol comparison.
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parents: 120
diff changeset
234 symbolObj sym = symbolSet.getSymbol(i);
8f30f7e802d6 Manage symbol names and symbol comparison.
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parents: 120
diff changeset
235 int stype = sym.getType();
8f30f7e802d6 Manage symbol names and symbol comparison.
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parents: 120
diff changeset
236 String etype = elem.getAttribute("style");
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parents: 120
diff changeset
237 if(stype == MS_SYMBOL_TYPE.MS_SYMBOL_ELLIPSE.swigValue () &&
8f30f7e802d6 Manage symbol names and symbol comparison.
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parents: 120
diff changeset
238 etype.equals("point")) {
145
b2c5a66022f1 Exception handling for number conversions in writer modules.
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parents: 141
diff changeset
239 return i;
141
8f30f7e802d6 Manage symbol names and symbol comparison.
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parents: 120
diff changeset
240 }
8f30f7e802d6 Manage symbol names and symbol comparison.
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parents: 120
diff changeset
241 else if(stype == MS_SYMBOL_TYPE.MS_SYMBOL_VECTOR.swigValue () &&
8f30f7e802d6 Manage symbol names and symbol comparison.
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parents: 120
diff changeset
242 etype.equals("arrow")) {
145
b2c5a66022f1 Exception handling for number conversions in writer modules.
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parents: 141
diff changeset
243 return i;
141
8f30f7e802d6 Manage symbol names and symbol comparison.
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parents: 120
diff changeset
244 }
8f30f7e802d6 Manage symbol names and symbol comparison.
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parents: 120
diff changeset
245 else if(stype == MS_SYMBOL_TYPE.MS_SYMBOL_TRUETYPE.swigValue () &&
8f30f7e802d6 Manage symbol names and symbol comparison.
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parents: 120
diff changeset
246 etype.equals("char")) {
8f30f7e802d6 Manage symbol names and symbol comparison.
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parents: 120
diff changeset
247 String font = elem.getAttribute("font");
8f30f7e802d6 Manage symbol names and symbol comparison.
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parents: 120
diff changeset
248 font = font.replaceAll(" ", "");
8f30f7e802d6 Manage symbol names and symbol comparison.
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parents: 120
diff changeset
249 String c = elem.getAttribute("char");
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parents: 120
diff changeset
250 c = "&#" + c + ";";
8f30f7e802d6 Manage symbol names and symbol comparison.
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parents: 120
diff changeset
251 if (font.equals(sym.getFont()) &&
8f30f7e802d6 Manage symbol names and symbol comparison.
vc11884admin@VC11884.win.bsh.de
parents: 120
diff changeset
252 c.equals(sym.getCharacter())) {
8f30f7e802d6 Manage symbol names and symbol comparison.
vc11884admin@VC11884.win.bsh.de
parents: 120
diff changeset
253 return i;
8f30f7e802d6 Manage symbol names and symbol comparison.
vc11884admin@VC11884.win.bsh.de
parents: 120
diff changeset
254 }
8f30f7e802d6 Manage symbol names and symbol comparison.
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parents: 120
diff changeset
255
8f30f7e802d6 Manage symbol names and symbol comparison.
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parents: 120
diff changeset
256 }
8f30f7e802d6 Manage symbol names and symbol comparison.
vc11884admin@VC11884.win.bsh.de
parents: 120
diff changeset
257 else if(stype == MS_SYMBOL_TYPE.MS_SYMBOL_HATCH.swigValue () &&
8f30f7e802d6 Manage symbol names and symbol comparison.
vc11884admin@VC11884.win.bsh.de
parents: 120
diff changeset
258 etype.equals("hatch")) {
145
b2c5a66022f1 Exception handling for number conversions in writer modules.
Raimund Renkert <rrenkert@intevation.de>
parents: 141
diff changeset
259 return i;
141
8f30f7e802d6 Manage symbol names and symbol comparison.
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parents: 120
diff changeset
260 }
8f30f7e802d6 Manage symbol names and symbol comparison.
vc11884admin@VC11884.win.bsh.de
parents: 120
diff changeset
261 }
8f30f7e802d6 Manage symbol names and symbol comparison.
vc11884admin@VC11884.win.bsh.de
parents: 120
diff changeset
262 return -1;
8f30f7e802d6 Manage symbol names and symbol comparison.
vc11884admin@VC11884.win.bsh.de
parents: 120
diff changeset
263 }
87
7d4cf2db43f1 Added new writer classes to be flexible in creating mapfiles.
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parents:
diff changeset
264 }
7d4cf2db43f1 Added new writer classes to be flexible in creating mapfiles.
Raimund Renkert <rrenkert@intevation.de>
parents:
diff changeset
265 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
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