1 | package relcontext;
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2 |
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3 | import java.awt.*;
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4 | import java.awt.geom.GeneralPath;
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5 | import java.util.*;
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6 | import org.openstreetmap.josm.Main;
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7 | import org.openstreetmap.josm.data.Bounds;
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8 | import org.openstreetmap.josm.data.osm.*;
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9 | import org.openstreetmap.josm.data.osm.event.*;
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10 | import org.openstreetmap.josm.gui.MapView;
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11 | import org.openstreetmap.josm.gui.MapView.EditLayerChangeListener;
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12 | import org.openstreetmap.josm.gui.layer.MapViewPaintable;
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13 | import org.openstreetmap.josm.gui.layer.OsmDataLayer;
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14 |
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15 | /**
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16 | * Chosen relation; is used for all actions and is highlighted on the map.
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17 | *
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18 | * @author Zverik
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19 | */
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20 | public class ChosenRelation implements EditLayerChangeListener, MapViewPaintable, DataSetListener {
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21 | protected Relation chosenRelation = null;
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22 | private Set<ChosenRelationListener> chosenRelationListeners = new HashSet<ChosenRelationListener>();
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23 |
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24 | public void set( Relation rel ) {
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25 | if( rel == chosenRelation || (rel != null && chosenRelation != null && rel.equals(chosenRelation)) ) {
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26 | return; // new is the same as old
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27 | }
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28 | Relation oldRel = chosenRelation;
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29 | chosenRelation = rel;
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30 | analyse();
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31 | Main.map.mapView.repaint();
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32 | fireRelationChanged(oldRel);
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33 | }
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34 |
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35 | protected void fireRelationChanged( Relation oldRel ) {
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36 | for( ChosenRelationListener listener : chosenRelationListeners )
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37 | listener.chosenRelationChanged(oldRel, chosenRelation);
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38 | }
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39 |
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40 | public Relation get() {
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41 | return chosenRelation;
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42 | }
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43 |
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44 | public void clear() {
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45 | set(null);
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46 | }
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47 |
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48 | public boolean isSame( Object r ) {
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49 | if( r == null )
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50 | return chosenRelation == null;
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51 | else if( !(r instanceof Relation) )
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52 | return false;
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53 | else
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54 | return chosenRelation != null && r.equals(chosenRelation);
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55 | }
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56 |
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57 | private final static String[] MULTIPOLYGON_TYPES = new String[] {
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58 | "multipolygon", "boundary"
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59 | };
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60 |
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61 | /**
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62 | * Check if the relation type assumes all ways inside it form a multipolygon.
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63 | */
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64 | public boolean isMultipolygon() {
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65 | return isMultipolygon(chosenRelation);
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66 | }
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67 |
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68 | public static boolean isMultipolygon( Relation r ) {
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69 | if( r == null )
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70 | return false;
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71 | String type = r.get("type");
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72 | if( type == null )
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73 | return false;
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74 | for( String t : MULTIPOLYGON_TYPES )
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75 | if( t.equals(type) )
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76 | return true;
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77 | return false;
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78 | }
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79 |
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80 | public int getSegmentsCount() {
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81 | return 0;
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82 | }
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83 |
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84 | public int getCirclesCount() {
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85 | return 0;
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86 | }
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87 |
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88 | protected void analyse() {
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89 | // todo
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90 | }
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91 |
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92 | public void addChosenRelationListener( ChosenRelationListener listener ) {
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93 | chosenRelationListeners.add(listener);
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94 | }
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95 |
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96 | public void removeChosenRelationListener( ChosenRelationListener listener ) {
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97 | chosenRelationListeners.remove(listener);
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98 | }
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99 |
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100 | public void editLayerChanged( OsmDataLayer oldLayer, OsmDataLayer newLayer ) {
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101 | // todo: dim chosen relation when changing layer
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102 | // todo: check this WTF!
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103 | clear();
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104 | if( newLayer != null && oldLayer == null ) {
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105 | Main.map.mapView.addTemporaryLayer(this);
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106 | } else if( newLayer == null ) {
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107 | Main.map.mapView.removeTemporaryLayer(this);
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108 | }
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109 | }
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110 |
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111 | public void paint( Graphics2D g, MapView mv, Bounds bbox ) {
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112 | if( chosenRelation == null ) {
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113 | return;
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114 | }
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115 |
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116 | OsmDataLayer dataLayer = mv.getEditLayer();
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117 | float opacity = dataLayer == null ? 0.0f : !dataLayer.isVisible() ? 0.0f : (float)dataLayer.getOpacity();
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118 | if( opacity < 0.01 )
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119 | return;
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120 |
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121 | Composite oldComposite = g.getComposite();
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122 | Stroke oldStroke = g.getStroke();
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123 | g.setStroke(new BasicStroke(9, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND));
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124 | g.setColor(Color.yellow);
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125 | g.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.3f * opacity));
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126 |
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127 | drawRelations(g, mv, bbox, chosenRelation);
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128 |
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129 | g.setComposite(oldComposite);
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130 | g.setStroke(oldStroke);
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131 |
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132 | }
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133 | private void drawRelations(Graphics2D g, MapView mv, Bounds bbox, Relation rel) {
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134 | for( OsmPrimitive element : rel.getMemberPrimitives() ) {
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135 | if( element.getType() == OsmPrimitiveType.NODE ) {
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136 | Node node = (Node)element;
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137 | Point center = mv.getPoint(node);
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138 | g.drawOval(center.x - 4, center.y - 4, 9, 9);
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139 | } else if( element.getType() == OsmPrimitiveType.WAY ) {
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140 | Way way = (Way)element;
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141 | if( way.getNodesCount() >= 2 ) {
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142 | GeneralPath b = new GeneralPath();
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143 | Point p = mv.getPoint(way.getNode(0));
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144 | b.moveTo(p.x, p.y);
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145 | for( int i = 1; i < way.getNodesCount(); i++ ) {
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146 | p = mv.getPoint(way.getNode(i));
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147 | b.lineTo(p.x, p.y);
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148 | }
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149 | g.draw(b);
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150 | }
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151 | } else if( element.getType() == OsmPrimitiveType.RELATION ) {
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152 | Color oldColor = g.getColor();
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153 | g.setColor(Color.magenta);
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154 | drawRelations(g, mv, bbox, (Relation)element);
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155 | g.setColor(oldColor);
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156 | }
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157 | // todo: closedway, multipolygon - ?
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158 | }
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159 | }
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160 |
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161 | public void relationMembersChanged( RelationMembersChangedEvent event ) {
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162 | if( chosenRelation != null && event.getRelation().equals(chosenRelation) )
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163 | fireRelationChanged(chosenRelation);
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164 | }
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165 |
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166 | public void tagsChanged( TagsChangedEvent event ) {
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167 | if( chosenRelation != null && event.getPrimitive().equals(chosenRelation) )
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168 | fireRelationChanged(chosenRelation);
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169 | }
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170 |
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171 | public void dataChanged( DataChangedEvent event ) {
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172 | if( chosenRelation != null )
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173 | fireRelationChanged(chosenRelation);
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174 | }
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175 |
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176 | public void primitivesRemoved( PrimitivesRemovedEvent event ) {
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177 | if( chosenRelation != null && event.getPrimitives().contains(chosenRelation) )
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178 | clear();
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179 | }
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180 |
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181 | public void wayNodesChanged( WayNodesChangedEvent event ) {
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182 | if( chosenRelation != null )
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183 | fireRelationChanged(chosenRelation); // download incomplete primitives doesn't cause dataChanged event
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184 | }
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185 |
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186 | public void primitivesAdded( PrimitivesAddedEvent event ) {}
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187 | public void nodeMoved( NodeMovedEvent event ) {}
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188 | public void otherDatasetChange( AbstractDatasetChangedEvent event ) {}
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189 | }
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