svn-gvsig-desktop / tags / J2ME_compat_v1_2_Build_1209 / libraries / libFMap / src / com / iver / cit / gvsig / fmap / rendering / styling / LinePlacementConstraints.java @ 19509
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1 | 19509 | jcarrasco | /* 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 | |||
42 | /* CVS MESSAGES:
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43 | *
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44 | * $Id: LinePlacementConstraints.java 13606 2007-09-10 15:47:11Z jaume $
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45 | * $Log$
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46 | * Revision 1.11 2007-09-10 15:47:11 jaume
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47 | * *** empty log message ***
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48 | *
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49 | * Revision 1.10 2007/05/22 10:05:31 jaume
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50 | * *** empty log message ***
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51 | *
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52 | * Revision 1.9 2007/05/08 08:47:40 jaume
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53 | * *** empty log message ***
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54 | *
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55 | * Revision 1.8 2007/04/18 15:35:11 jaume
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56 | * *** empty log message ***
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57 | *
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58 | * Revision 1.7 2007/04/13 11:59:30 jaume
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59 | * *** empty log message ***
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60 | *
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61 | * Revision 1.6 2007/04/12 16:01:11 jaume
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62 | * *** empty log message ***
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63 | *
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64 | * Revision 1.5 2007/04/12 14:28:43 jaume
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65 | * basic labeling support for lines
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66 | *
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67 | * Revision 1.4 2007/04/11 16:01:08 jaume
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68 | * maybe a label placer refactor
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69 | *
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70 | * Revision 1.3 2007/04/02 16:34:56 jaume
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71 | * Styled labeling (start commiting)
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72 | *
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73 | * Revision 1.2 2007/03/09 08:33:43 jaume
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74 | * *** empty log message ***
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75 | *
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76 | * Revision 1.1.2.1 2007/02/09 07:47:05 jaume
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77 | * Isymbol moved
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78 | *
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79 | *
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80 | */
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81 | package com.iver.cit.gvsig.fmap.rendering.styling; |
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82 | |||
83 | import java.awt.Graphics2D; |
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84 | import java.awt.Rectangle; |
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85 | import java.awt.geom.AffineTransform; |
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86 | import java.util.Hashtable; |
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87 | import java.util.logging.Logger; |
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88 | |||
89 | import org.apache.batik.ext.awt.geom.PathLength; |
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90 | import org.cresques.px.gml.MultiPolygon; |
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91 | |||
92 | import com.iver.cit.gvsig.fmap.core.FPoint2D; |
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93 | import com.iver.cit.gvsig.fmap.core.FShape; |
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94 | import com.iver.cit.gvsig.fmap.core.IGeometry; |
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95 | import com.iver.cit.gvsig.fmap.core.TextPath; |
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96 | import com.iver.cit.gvsig.fmap.drivers.IFeatureIterator; |
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97 | import com.iver.utiles.XMLEntity; |
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98 | /**
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99 | *
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100 | * @author jaume dominguez faus - jaume.dominguez@iver.es
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101 | *
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102 | */
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103 | public class LinePlacementConstraints extends AbstractPlacementConstraints { |
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104 | private static final double HALF_PI = Math.PI * 0.5; |
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105 | private Hashtable textPaths = new Hashtable(), texts = new Hashtable(); |
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106 | |||
107 | public LinePlacementConstraints() {
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108 | super();
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109 | setPlacementMode(PARALLEL); |
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110 | } |
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111 | |||
112 | public FShape[] getLocationsFor(IGeometry geom, FShape labelShape, MultiPolygon exclusionZone) { |
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113 | return new FShape[] { (FShape) geom.getInternalShape() }; |
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114 | } |
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115 | |||
116 | public void placeLabel(Graphics2D g, IGeometry geom, LabelClass lc, MultiPolygon exclusionZone, AffineTransform at) { |
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117 | Rectangle labelBounds = lc.getShape(g, at, geom).getBounds();
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118 | if (labelBounds.width == 0 || labelBounds.height == 0) return; |
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119 | |||
120 | FPoint2D startingPoint = null;
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121 | double theta = 0; |
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122 | if (isFollowingLine()) {
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123 | throw new Error("following line option not yet implemented"); |
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124 | // 1. create text path
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125 | // 2. convert text symbol to SmartTextSymbol if need
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126 | |||
127 | } else {
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128 | PathLength pathLen = new PathLength(geom.getInternalShape());
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129 | float distance;
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130 | |||
131 | if (isAtTheBeginingOfLine()) {
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132 | distance = 0;
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133 | } else if (isAtTheEndOfLine()) { |
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134 | distance = pathLen.lengthOfPath(); |
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135 | } else {
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136 | // will use in the middle of the line
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137 | distance = pathLen.lengthOfPath() * 0.5F;
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138 | } |
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139 | |||
140 | startingPoint = new FPoint2D(pathLen.pointAtLength(distance));
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141 | |||
142 | if (isParallel()) {
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143 | // get the line theta and apply it
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144 | theta = -pathLen.angleAtLength(distance); |
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145 | |||
146 | } else if (isPerpendicular()) { |
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147 | // get the line theta with 90 degrees
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148 | theta = -pathLen.angleAtLength(distance) + HALF_PI; |
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149 | } |
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150 | } |
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151 | |||
152 | /*
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153 | * Now we have the starting point for the text and the angle of
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154 | * the line in such point , we will apply the offset to place the
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155 | * text either over, under or above the line
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156 | */
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157 | if (exclusionZone == null) { |
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158 | // no check for overlapping is needed
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159 | |||
160 | if (isBellowTheLine()) {
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161 | // Offset to be on bellow of the line.
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162 | // TODO
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163 | Logger.getAnonymousLogger().warning("Bellow the line label place, not yet implemented"); |
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164 | } else if (isAboveTheLine()) { |
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165 | // Offset to be above the line (inverse offset to under the line)
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166 | // TODO
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167 | Logger.getAnonymousLogger().warning("Above the line label place, not yet implemented"); |
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168 | |||
169 | } else {
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170 | // No offset.
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171 | // TODO
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172 | } |
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173 | |||
174 | /*
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175 | * Now, we'll need to see who is defining the orientation
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176 | * either the line or the page.
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177 | */
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178 | if (isPageOriented()) {
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179 | // TODO
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180 | Logger.getAnonymousLogger().warning("page oriented label place, not yet implemented"); |
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181 | |||
182 | } else {
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183 | // The line defines the orientation.
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184 | } |
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185 | |||
186 | |||
187 | } else {
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188 | // the case of the process for look for a non-overlapping place
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189 | // will be better handled by a SmartLinePlacement
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190 | throw new Error("overlapping detection option not yet implemented"); |
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191 | } |
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192 | startingPoint.transform(at); |
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193 | labelBounds.setLocation(0-(int) (labelBounds.width*.5), 0 - (int) (labelBounds.height*.5)); |
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194 | g.translate((int) startingPoint.getX(), (int) startingPoint.getY()); |
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195 | if (theta != 0) { |
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196 | g.rotate(theta); |
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197 | } |
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198 | lc.drawInsideRectangle(g, labelBounds); |
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199 | if (theta != 0) { |
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200 | g.rotate(-theta); |
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201 | } |
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202 | g.translate(-(int) startingPoint.getX(), -(int) startingPoint.getY()); |
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203 | |||
204 | } |
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205 | |||
206 | public String getClassName() { |
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207 | return getClass().getName();
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208 | } |
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209 | |||
210 | public XMLEntity getXMLEntity() {
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211 | XMLEntity xml = super.getXMLEntity();
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212 | xml.putProperty("className", getClassName());
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213 | return xml;
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214 | } |
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215 | |||
216 | |||
217 | private TextPath getTreePath(Integer index, Graphics2D g, FShape shp, char[] text) { |
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218 | TextPath tp = (TextPath) textPaths.get(index); |
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219 | if (tp == null) { |
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220 | tp = new TextPath(g, shp, text);
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221 | textPaths.put(index, tp); |
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222 | } |
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223 | return tp;
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224 | } |
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225 | |||
226 | public void preprocess(IFeatureIterator featIterator) { |
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227 | // TODO Auto-generated method stub
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228 | throw new Error("Not yet implemented!"); |
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229 | } |
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230 | |||
231 | public void postprocess() { |
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232 | // TODO Auto-generated method stub
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233 | throw new Error("Not yet implemented!"); |
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234 | } |
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235 | } |