1 | // License: GPL. For details, see LICENSE file.
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2 | package org.openstreetmap.josm.data.validation;
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3 |
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4 | import java.awt.Color;
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5 | import java.awt.Graphics;
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6 | import java.awt.Point;
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7 | import java.util.HashSet;
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8 | import java.util.List;
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9 | import java.util.Objects;
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10 | import java.util.Set;
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11 |
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12 | import org.openstreetmap.josm.data.coor.LatLon;
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13 | import org.openstreetmap.josm.data.osm.Node;
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14 | import org.openstreetmap.josm.data.osm.OsmPrimitive;
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15 | import org.openstreetmap.josm.data.osm.Relation;
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16 | import org.openstreetmap.josm.data.osm.Way;
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17 | import org.openstreetmap.josm.data.osm.WaySegment;
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18 | import org.openstreetmap.josm.data.osm.visitor.AbstractVisitor;
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19 | import org.openstreetmap.josm.gui.MapView;
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20 | import org.openstreetmap.josm.tools.Utils;
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21 |
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22 | /**
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23 | * Visitor that highlights the primitives affected by an error
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24 | * @author frsantos
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25 | * @since 5671
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26 | */
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27 | public class PaintVisitor extends AbstractVisitor implements ValidatorVisitor {
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28 | /** The graphics */
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29 | private final Graphics g;
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30 | /** The MapView */
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31 | private final MapView mv;
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32 |
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33 | /** The severity color */
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34 | private Color color;
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35 | /** Is the error selected ? */
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36 | private boolean selected;
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37 |
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38 | private final Set<PaintedPoint> paintedPoints = new HashSet<>();
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39 | private final Set<PaintedSegment> paintedSegments = new HashSet<>();
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40 |
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41 | /**
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42 | * Constructor
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43 | * @param g The graphics
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44 | * @param mv The Mapview
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45 | */
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46 | public PaintVisitor(Graphics g, MapView mv) {
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47 | this.g = g;
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48 | this.mv = mv;
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49 | }
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50 |
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51 | protected static class PaintedPoint {
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52 | protected final LatLon p1;
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53 | protected final Color color;
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54 |
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55 | public PaintedPoint(LatLon p1, Color color) {
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56 | this.p1 = p1;
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57 | this.color = color;
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58 | }
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59 |
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60 | @Override
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61 | public int hashCode() {
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62 | return Objects.hash(p1, color);
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63 | }
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64 |
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65 | @Override
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66 | public boolean equals(Object obj) {
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67 | if (this == obj) return true;
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68 | if (obj == null || getClass() != obj.getClass()) return false;
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69 | PaintedPoint that = (PaintedPoint) obj;
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70 | return Objects.equals(p1, that.p1) &&
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71 | Objects.equals(color, that.color);
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72 | }
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73 | }
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74 |
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75 | protected static class PaintedSegment extends PaintedPoint {
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76 | private final LatLon p2;
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77 |
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78 | public PaintedSegment(LatLon p1, LatLon p2, Color color) {
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79 | super(p1, color);
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80 | this.p2 = p2;
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81 | }
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82 |
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83 | @Override
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84 | public int hashCode() {
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85 | return Objects.hash(super.hashCode(), p2);
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86 | }
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87 |
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88 | @Override
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89 | public boolean equals(Object obj) {
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90 | if (this == obj) return true;
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91 | if (obj == null || getClass() != obj.getClass()) return false;
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92 | if (!super.equals(obj)) return false;
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93 | PaintedSegment that = (PaintedSegment) obj;
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94 | return Objects.equals(p2, that.p2);
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95 | }
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96 | }
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97 |
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98 | @Override
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99 | public void visit(TestError error) {
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100 | if (error != null && !error.isIgnored()) {
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101 | color = error.getSeverity().getColor();
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102 | selected = error.isSelected();
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103 | error.visitHighlighted(this);
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104 | }
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105 | }
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106 |
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107 | @Override
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108 | public void visit(OsmPrimitive p) {
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109 | if (p.isUsable()) {
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110 | p.accept(this);
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111 | }
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112 | }
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113 |
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114 | /**
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115 | * Draws a circle around the node
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116 | * @param n The node
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117 | * @param color The circle color
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118 | */
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119 | protected void drawNode(Node n, Color color) {
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120 | PaintedPoint pp = new PaintedPoint(n.getCoor(), color);
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121 |
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122 | if (!paintedPoints.contains(pp)) {
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123 | Point p = mv.getPoint(n);
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124 |
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125 | if (selected) {
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126 | g.setColor(getHighlightColor(color));
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127 | g.fillOval(p.x - 5, p.y - 5, 10, 10);
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128 | }
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129 | g.setColor(color);
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130 | g.drawOval(p.x - 5, p.y - 5, 10, 10);
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131 | paintedPoints.add(pp);
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132 | }
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133 | }
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134 |
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135 | /**
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136 | * Draws a line around the segment
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137 | *
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138 | * @param p1 The first point of segment
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139 | * @param p2 The second point of segment
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140 | * @param color The color
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141 | */
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142 | protected void drawSegment(Point p1, Point p2, Color color) {
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143 |
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144 | double t = Math.atan2((double) p2.x - p1.x, (double) p2.y - p1.y);
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145 | double cosT = 5 * Math.cos(t);
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146 | double sinT = 5 * Math.sin(t);
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147 | int deg = (int) Utils.toDegrees(t);
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148 | if (selected) {
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149 | g.setColor(getHighlightColor(color));
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150 | int[] x = new int[] {(int) (p1.x + cosT), (int) (p2.x + cosT),
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151 | (int) (p2.x - cosT), (int) (p1.x - cosT)};
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152 | int[] y = new int[] {(int) (p1.y - sinT), (int) (p2.y - sinT),
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153 | (int) (p2.y + sinT), (int) (p1.y + sinT)};
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154 | g.fillPolygon(x, y, 4);
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155 | g.fillArc(p1.x - 5, p1.y - 5, 10, 10, deg, 180);
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156 | g.fillArc(p2.x - 5, p2.y - 5, 10, 10, deg, -180);
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157 | }
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158 | g.setColor(color);
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159 | g.drawLine((int) (p1.x + cosT), (int) (p1.y - sinT),
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160 | (int) (p2.x + cosT), (int) (p2.y - sinT));
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161 | g.drawLine((int) (p1.x - cosT), (int) (p1.y + sinT),
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162 | (int) (p2.x - cosT), (int) (p2.y + sinT));
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163 | g.drawArc(p1.x - 5, p1.y - 5, 10, 10, deg, 180);
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164 | g.drawArc(p2.x - 5, p2.y - 5, 10, 10, deg, -180);
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165 | }
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166 |
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167 | /**
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168 | * Draws a line around the segment
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169 | *
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170 | * @param n1 The first node of segment
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171 | * @param n2 The second node of segment
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172 | * @param color The color
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173 | */
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174 | protected void drawSegment(Node n1, Node n2, Color color) {
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175 | if (n1.isDrawable() && n2.isDrawable() && isSegmentVisible(n1, n2)) {
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176 | PaintedSegment ps = new PaintedSegment(n1.getCoor(), n2.getCoor(), color);
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177 | if (!paintedSegments.contains(ps)) {
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178 | drawSegment(mv.getPoint(n1), mv.getPoint(n2), color);
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179 | paintedSegments.add(ps);
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180 | }
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181 | }
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182 | }
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183 |
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184 | /**
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185 | * Draw a small rectangle.
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186 | * White if selected (as always) or red otherwise.
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187 | *
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188 | * @param n The node to draw.
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189 | */
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190 | @Override
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191 | public void visit(Node n) {
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192 | if (n.isDrawable() && isNodeVisible(n)) {
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193 | drawNode(n, color);
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194 | }
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195 | }
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196 |
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197 | @Override
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198 | public void visit(Way w) {
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199 | visit(w.getNodes());
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200 | }
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201 |
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202 | @Override
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203 | public void visit(WaySegment ws) {
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204 | if (ws.lowerIndex < 0 || ws.lowerIndex + 1 >= ws.way.getNodesCount())
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205 | return;
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206 | Node a = ws.way.getNodes().get(ws.lowerIndex);
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207 | Node b = ws.way.getNodes().get(ws.lowerIndex + 1);
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208 | drawSegment(a, b, color);
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209 | }
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210 |
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211 | @Override
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212 | public void visit(Relation r) {
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213 | /* No idea how to draw a relation. */
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214 | }
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215 |
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216 | /**
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217 | * Checks if the given node is in the visible area.
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218 | * @param n The node to check for visibility
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219 | * @return true if the node is visible
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220 | */
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221 | protected boolean isNodeVisible(Node n) {
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222 | Point p = mv.getPoint(n);
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223 | return !((p.x < 0) || (p.y < 0) || (p.x > mv.getWidth()) || (p.y > mv.getHeight()));
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224 | }
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225 |
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226 | /**
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227 | * Checks if the given segment is in the visible area.
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228 | * NOTE: This will return true for a small number of non-visible segments.
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229 | * @param n1 The first point of the segment to check
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230 | * @param n2 The second point of the segment to check
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231 | * @return {@code true} if the segment is visible
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232 | */
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233 | protected boolean isSegmentVisible(Node n1, Node n2) {
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234 | Point p1 = mv.getPoint(n1);
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235 | Point p2 = mv.getPoint(n2);
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236 | return (p1.x >= 0 || p2.x >= 0)
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237 | && (p1.y >= 0 || p2.y >= 0)
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238 | && (p1.x <= mv.getWidth() || p2.x <= mv.getWidth())
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239 | && (p1.y <= mv.getHeight() || p2.y <= mv.getHeight());
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240 | }
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241 |
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242 | @Override
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243 | public void visit(List<Node> nodes) {
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244 | Node lastN = null;
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245 | for (Node n : nodes) {
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246 | if (lastN == null) {
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247 | lastN = n;
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248 | continue;
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249 | }
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250 | drawSegment(lastN, n, color);
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251 | lastN = n;
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252 | }
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253 | }
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254 |
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255 | /**
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256 | * Gets the color to draw highlight markers with.
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257 | * @param color severity color
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258 | * @return The color.
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259 | */
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260 | private static Color getHighlightColor(Color color) {
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261 | return new Color(color.getRed(), color.getGreen(), color.getBlue(), (int) (color.getAlpha() * .4));
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262 | }
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263 |
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264 | /**
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265 | * Clears the internal painted objects collections.
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266 | */
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267 | public void clearPaintedObjects() {
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268 | paintedPoints.clear();
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269 | paintedSegments.clear();
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270 | }
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271 | }
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