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annotate src/java/de/intevation/mxd/writer/SymbolWriter.java @ 145:b2c5a66022f1

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Exception handling for number conversions in writer modules.
author Raimund Renkert <rrenkert@intevation.de>
date Mon, 27 Jun 2011 18:22:21 +0200
parents 8f30f7e802d6
children 707f13cfba74
rev   line source
87
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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
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17 /**
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18 * The interface to the mapfile writer.
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19 *
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20 * @author <a href="mailto:raimund.renkert@intevation.de">Raimund Renkert</a>
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21 */
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22 public class SymbolWriter {
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23
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24 /**
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25 * The Logger.
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26 */
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27 private static final Logger logger = Logger.getLogger(SymbolWriter.class);
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28
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29 private mapObj map;
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30 private classObj cl;
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31 private styleObj style;
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32
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33 public SymbolWriter (mapObj map, classObj cl) {
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34 this.map = map;
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35 this.cl = cl;
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36 this.style = new styleObj(cl);
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37 }
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38
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39 /**
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40 * Write the content.
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41 */
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42 public boolean write(Element symbolElement) {
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43 logger.debug("write(Element)");
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44 symbolSetObj symbolSet = map.getSymbolset();
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45
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46 String name = symbolElement.getAttribute("name");
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47 symbolObj sym = symbolSet.getSymbolByName(name);
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48 String symType = symbolElement.getAttribute("style");
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49 String type = symbolElement.getAttribute("type");
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50 if(symType.equals("point")) {
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51 writeSimple(sym);
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52 }
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53 else if (symType.equals("arrow")) {
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54 writeArrow(sym, symbolElement);
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55 }
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56 else if (symType.equals("char")) {
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57 int exists = symbolExists(symbolElement);
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58 if(exists == -1) {
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59 String old = symbolElement.getAttribute("name");
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60 symbolElement.setAttribute(
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61 "name",
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62 old + symbolSet.getNumsymbols() + 1);
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63 writeCharacter(sym, symbolElement);
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64 }
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65 else {
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66 symbolElement.setAttribute(
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67 "name",
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68 symbolSet.getSymbol(exists).getName());
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69 }
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70 }
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71 else if (type.equals("line")) {
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72 writeHatch(sym);
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73 }
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74 else {
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75 return false;
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76 }
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77
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78 try {
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79 saveSymbolSet(symbolSet);
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80 }
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81 catch(Exception e) {
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82 logger.error("Error saving symbol set.");
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83 return false;
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84 }
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85
87
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86 return true;
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87 }
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88
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89 private void writeSimple(symbolObj symbol) {
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90 logger.debug("writeSimple(symbolObj)");
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91 lineObj points = new lineObj();
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92 points.add(new pointObj(1,1,0));
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93 symbol.setType(MS_SYMBOL_TYPE.MS_SYMBOL_ELLIPSE.swigValue());
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94 symbol.setPoints(points);
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95 symbol.setFilled(1);
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96 }
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97
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98 private void writeArrow(symbolObj symbol, Element symbolElement) {
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99 logger.debug("writeArrow(symbolObj, Element)");
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100 double len = 0;
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101 double width = 1;
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102 try {
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103 len =
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104 Double.parseDouble(symbolElement.getAttribute("length"));
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105 width =
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106 Double.parseDouble(symbolElement.getAttribute("width"));
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107 }
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108 catch(NumberFormatException nfe) {
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109 logger.warn ("Error setting arrow symbol.");
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110 return;
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111 }
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112 double ratio = len/width;
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113 lineObj points = new lineObj();
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114
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115 points.add(new pointObj(0, 0, 0));
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116 points.add(new pointObj((1*ratio), 0.5, 0));
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117 points.add(new pointObj(0, 1, 0));
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118 points.add(new pointObj(0, 0, 0));
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119 symbol.setType(MS_SYMBOL_TYPE.MS_SYMBOL_VECTOR.swigValue());
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120 symbol.setPoints(points);
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121 symbol.setFilled(1);
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122 }
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123
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124 private void writeCharacter(symbolObj symbol, Element symbolElement) {
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125 logger.debug("writeCharacter(symbolObj, Element)");
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126 //TODO Write the symbol correctly. See Issue 3885 on trac.osgeo.org
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127 String font = symbolElement.getAttribute("font");
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128 //Remove all blank character to match the mapserver fonts.txt.
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129 font = font.replaceAll(" ", "");
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130 symbol.setName(symbolElement.getAttribute("name"));
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131 symbol.setFont(font);
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132 symbol.setType(MS_SYMBOL_TYPE.MS_SYMBOL_TRUETYPE.swigValue());
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133 symbol.setAntialias(1);
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134 symbol.setCharacter("&#" + symbolElement.getAttribute("char") + ";");
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135 }
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136
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137 private void writeHatch(symbolObj symbol) {
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138 logger.debug("writeHatch(symbolObj)");
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139 symbol.setType(MS_SYMBOL_TYPE.MS_SYMBOL_HATCH.swigValue());
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140 }
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141
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142 public boolean canWrite(String type) {
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143 if (type.equals("point") ||
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144 type.equals("arrow") ||
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145 type.equals("char") ||
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146 type.equals("line")) {
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147 return true;
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148 }
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149 else {
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150 return false;
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151 }
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152 }
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153
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154 private void saveSymbolSet(symbolSetObj symbols)
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155 throws Exception {
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156 String path = this.map.getMappath();
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157 if(path.equals("")) {
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158 return;
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159 }
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160 else {
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161 path += "symbols.sym";
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162 }
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163 symbols.save(path);
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164 }
141
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165
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166 private int symbolExists (Element elem) {
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167 symbolSetObj symbolSet = map.getSymbolset();
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168 for (int i = 0; i < symbolSet.getNumsymbols(); i++) {
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169 symbolObj sym = symbolSet.getSymbol(i);
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170 int stype = sym.getType();
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171 String etype = elem.getAttribute("style");
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172 if(stype == MS_SYMBOL_TYPE.MS_SYMBOL_ELLIPSE.swigValue () &&
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173 etype.equals("point")) {
145
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174 return i;
141
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175 }
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176 else if(stype == MS_SYMBOL_TYPE.MS_SYMBOL_VECTOR.swigValue () &&
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177 etype.equals("arrow")) {
145
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178 return i;
141
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179 }
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180 else if(stype == MS_SYMBOL_TYPE.MS_SYMBOL_TRUETYPE.swigValue () &&
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181 etype.equals("char")) {
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182 String font = elem.getAttribute("font");
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183 font = font.replaceAll(" ", "");
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184 String c = elem.getAttribute("char");
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185 c = "&#" + c + ";";
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186 if (font.equals(sym.getFont()) &&
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187 c.equals(sym.getCharacter())) {
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188 return i;
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189 }
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190
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191 }
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192 else if(stype == MS_SYMBOL_TYPE.MS_SYMBOL_HATCH.swigValue () &&
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diff changeset
193 etype.equals("hatch")) {
145
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diff changeset
194 return i;
141
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195 }
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196 }
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197 return -1;
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diff changeset
198 }
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199 }
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200 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
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