1 | // License: GPL. Copyright 2007 by Immanuel Scholz and others
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2 | package org.openstreetmap.josm.actions.mapmode;
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3 |
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4 | import static org.openstreetmap.josm.tools.I18n.tr;
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5 |
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6 | import java.awt.BasicStroke;
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7 | import java.awt.Color;
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8 | import java.awt.Cursor;
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9 | import java.awt.Graphics;
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10 | import java.awt.Graphics2D;
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11 | import java.awt.Point;
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12 | import java.awt.event.KeyEvent;
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13 | import java.awt.event.MouseEvent;
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14 | import java.awt.geom.GeneralPath;
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15 | import java.util.Collection;
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16 | import java.util.LinkedList;
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17 |
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18 | import org.openstreetmap.josm.Main;
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19 | import org.openstreetmap.josm.command.AddCommand;
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20 | import org.openstreetmap.josm.command.ChangeCommand;
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21 | import org.openstreetmap.josm.command.Command;
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22 | import org.openstreetmap.josm.command.SequenceCommand;
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23 | import org.openstreetmap.josm.data.Preferences;
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24 | import org.openstreetmap.josm.data.coor.EastNorth;
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25 | import org.openstreetmap.josm.data.osm.Node;
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26 | import org.openstreetmap.josm.data.osm.Way;
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27 | import org.openstreetmap.josm.data.osm.WaySegment;
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28 | import org.openstreetmap.josm.gui.MapFrame;
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29 | import org.openstreetmap.josm.gui.MapView;
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30 | import org.openstreetmap.josm.gui.layer.MapViewPaintable;
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31 | import org.openstreetmap.josm.tools.ImageProvider;
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32 | /**
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33 | * Makes a rectangle from a line, or modifies a rectangle.
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34 | *
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35 | * This class currently contains some "sleeping" code copied from DrawAction (move and rotate)
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36 | * which can eventually be removed, but it may also get activated here and removed in DrawAction.
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37 | */
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38 | public class ExtrudeAction extends MapMode implements MapViewPaintable {
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39 |
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40 | enum Mode { EXTRUDE, rotate, select }
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41 | private Mode mode = null;
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42 | private long mouseDownTime = 0;
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43 | private WaySegment selectedSegment = null;
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44 | private Color selectedColor;
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45 |
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46 | double xoff;
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47 | double yoff;
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48 | double distance;
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49 |
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50 | /**
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51 | * The old cursor before the user pressed the mouse button.
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52 | */
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53 | private Cursor oldCursor;
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54 | /**
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55 | * The curren tposition of the mouse
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56 | */
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57 | private Point mousePos;
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58 | /**
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59 | * The position of the mouse cursor when the drag action was initiated.
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60 | */
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61 | private Point initialMousePos;
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62 | /**
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63 | * The time which needs to pass between click and release before something
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64 | * counts as a move, in milliseconds
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65 | */
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66 | private int initialMoveDelay = 200;
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67 |
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68 | /**
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69 | * The screen distance which needs to be travelled before something
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70 | * counts as a move, in pixels
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71 | */
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72 | private int initialMoveThreshold = 15;
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73 | private boolean initialMoveThresholdExceeded = false;
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74 | /**
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75 | * Create a new SelectAction
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76 | * @param mapFrame The MapFrame this action belongs to.
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77 | */
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78 | public ExtrudeAction(MapFrame mapFrame) {
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79 | super(tr("Extrude"), "extrude/extrude", tr("Create areas"),
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80 | KeyEvent.VK_X, mapFrame,
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81 | getCursor("normal", "selection", Cursor.DEFAULT_CURSOR));
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82 | putValue("help", "Action/Extrude/Extrude");
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83 | try { initialMoveDelay = Integer.parseInt(Main.pref.get("edit.initial-move-delay","200")); } catch (NumberFormatException x) {}
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84 | try { initialMoveThreshold = Integer.parseInt(Main.pref.get("edit.initial-move-threshold","5")); } catch (NumberFormatException x) {}
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85 | selectedColor = Preferences.getPreferencesColor("selected", Color.YELLOW);
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86 | }
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87 |
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88 | private static Cursor getCursor(String name, String mod, int def) {
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89 | try {
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90 | return ImageProvider.getCursor(name, mod);
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91 | } catch (Exception e) {
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92 | }
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93 | return Cursor.getPredefinedCursor(def);
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94 | }
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95 |
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96 | private void setCursor(Cursor c) {
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97 | if (oldCursor == null) {
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98 | oldCursor = Main.map.mapView.getCursor();
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99 | Main.map.mapView.setCursor(c);
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100 | }
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101 | }
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102 |
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103 | private void restoreCursor() {
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104 | if (oldCursor != null) {
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105 | Main.map.mapView.setCursor(oldCursor);
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106 | oldCursor = null;
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107 | }
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108 | }
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109 |
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110 | @Override public void enterMode() {
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111 | super.enterMode();
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112 | Main.map.mapView.addMouseListener(this);
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113 | Main.map.mapView.addMouseMotionListener(this);
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114 | }
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115 |
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116 | @Override public void exitMode() {
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117 | super.exitMode();
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118 | Main.map.mapView.removeMouseListener(this);
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119 | Main.map.mapView.removeMouseMotionListener(this);
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120 | Main.map.mapView.removeTemporaryLayer(this);
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121 |
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122 | }
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123 |
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124 | /**
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125 | * If the left mouse button is pressed, move all currently selected
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126 | * objects (if one of them is under the mouse) or the current one under the
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127 | * mouse (which will become selected).
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128 | */
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129 | @Override public void mouseDragged(MouseEvent e) {
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130 | if (mode == Mode.select) return;
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131 |
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132 | // do not count anything as a move if it lasts less than 100 milliseconds.
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133 | if ((mode == Mode.EXTRUDE) && (System.currentTimeMillis() - mouseDownTime < initialMoveDelay)) return;
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134 |
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135 | if ((e.getModifiersEx() & MouseEvent.BUTTON1_DOWN_MASK) == 0)
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136 | return;
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137 |
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138 | if (mode == Mode.EXTRUDE) {
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139 | setCursor(Cursor.getPredefinedCursor(Cursor.MOVE_CURSOR));
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140 | }
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141 |
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142 | if (mousePos == null) {
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143 | mousePos = e.getPoint();
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144 | return;
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145 | }
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146 |
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147 | Main.map.mapView.repaint();
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148 | mousePos = e.getPoint();
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149 |
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150 | }
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151 |
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152 | public void paint(Graphics g, MapView mv) {
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153 | if (selectedSegment != null) {
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154 | Node n1 = selectedSegment.way.nodes.get(selectedSegment.lowerIndex);
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155 | Node n2 = selectedSegment.way.nodes.get(selectedSegment.lowerIndex+1);
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156 |
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157 | EastNorth en1 = n1.eastNorth;
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158 | EastNorth en2 = n2.eastNorth;
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159 | if (en1.east() < en2.east()) { en2 = en1; en1 = n2.eastNorth; }
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160 | EastNorth en3 = mv.getEastNorth(mousePos.x, mousePos.y);
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161 |
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162 | double u = ((en3.east()-en1.east())*(en2.east()-en1.east()) + (en3.north()-en1.north())*(en2.north()-en1.north()))/en2.distanceSq(en1);
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163 | // the point on the segment from which the distance to mouse pos is shortest
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164 | EastNorth base = new EastNorth(en1.east()+u*(en2.east()-en1.east()), en1.north()+u*(en2.north()-en1.north()));
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165 |
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166 | // the distance, in projection units, between the base point and the mouse cursor
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167 | double len = base.distance(en3);
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168 |
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169 | // find out the distance, in metres, between the base point and the mouse cursor
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170 | distance = Main.proj.eastNorth2latlon(base).greatCircleDistance(Main.proj.eastNorth2latlon(en3));
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171 | Main.map.statusLine.setDist(distance);
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172 | updateStatusLine();
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173 |
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174 | // compute the angle at which the segment is drawn
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175 | // and use it to compute the x and y offsets for the
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176 | // corner points.
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177 | double sin_alpha = (en2.north()-en1.north())/en2.distance(en1);
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178 |
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179 | // this is a kludge because sometimes extrusion just goes the wrong direction
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180 | if ((en3.east()>base.east()) ^ (sin_alpha < 0)) len=-len;
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181 | xoff = sin_alpha * len;
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182 | yoff = Math.sqrt(1-sin_alpha*sin_alpha) * len;
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183 |
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184 | Graphics2D g2 = (Graphics2D) g;
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185 | g2.setColor(selectedColor);
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186 | g2.setStroke(new BasicStroke(3, BasicStroke.CAP_ROUND, BasicStroke.JOIN_ROUND));
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187 | GeneralPath b = new GeneralPath();
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188 | Point p1=mv.getPoint(en1);
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189 | Point p2=mv.getPoint(en2);
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190 | Point p3=mv.getPoint(en1.add(-xoff, -yoff));
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191 | Point p4=mv.getPoint(en2.add(-xoff, -yoff));
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192 |
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193 | b.moveTo(p1.x,p1.y); b.lineTo(p3.x, p3.y);
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194 | b.lineTo(p4.x, p4.y); b.lineTo(p2.x, p2.y);
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195 | b.lineTo(p1.x,p1.y);
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196 | g2.draw(b);
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197 | g2.setStroke(new BasicStroke(1));
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198 | }
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199 | }
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200 |
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201 | /**
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202 | */
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203 | @Override public void mousePressed(MouseEvent e) {
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204 | if (!(Boolean)this.getValue("active")) return;
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205 | if (e.getButton() != MouseEvent.BUTTON1)
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206 | return;
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207 | // boolean ctrl = (e.getModifiers() & ActionEvent.CTRL_MASK) != 0;
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208 | // boolean alt = (e.getModifiers() & ActionEvent.ALT_MASK) != 0;
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209 | // boolean shift = (e.getModifiers() & ActionEvent.SHIFT_MASK) != 0;
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210 |
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211 | mouseDownTime = System.currentTimeMillis();
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212 |
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213 | selectedSegment =
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214 | Main.map.mapView.getNearestWaySegment(e.getPoint());
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215 |
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216 | mode = (selectedSegment == null) ? Mode.select : Mode.EXTRUDE;
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217 | oldCursor = Main.map.mapView.getCursor();
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218 |
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219 | updateStatusLine();
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220 | Main.map.mapView.addTemporaryLayer(this);
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221 | Main.map.mapView.repaint();
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222 |
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223 | mousePos = e.getPoint();
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224 | initialMousePos = e.getPoint();
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225 | }
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226 |
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227 | /**
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228 | * Restore the old mouse cursor.
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229 | */
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230 | @Override public void mouseReleased(MouseEvent e) {
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231 | restoreCursor();
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232 | if (selectedSegment == null) return;
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233 | if (mousePos.distance(initialMousePos) > 10) {
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234 | Node n1 = selectedSegment.way.nodes.get(selectedSegment.lowerIndex);
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235 | Node n2 = selectedSegment.way.nodes.get(selectedSegment.lowerIndex+1);
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236 | EastNorth en3 = n2.eastNorth.add(-xoff, -yoff);
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237 | Node n3 = new Node(Main.proj.eastNorth2latlon(en3));
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238 | EastNorth en4 = n1.eastNorth.add(-xoff, -yoff);
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239 | Node n4 = new Node(Main.proj.eastNorth2latlon(en4));
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240 | Way wnew = new Way(selectedSegment.way);
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241 | wnew.nodes.add(selectedSegment.lowerIndex+1, n3);
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242 | wnew.nodes.add(selectedSegment.lowerIndex+1, n4);
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243 | if (wnew.nodes.size() == 4) wnew.nodes.add(n1);
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244 | Collection<Command> cmds = new LinkedList<Command>();
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245 | cmds.add(new AddCommand(n4));
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246 | cmds.add(new AddCommand(n3));
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247 | cmds.add(new ChangeCommand(selectedSegment.way, wnew));
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248 | Command c = new SequenceCommand(tr("Extrude Way"), cmds);
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249 | Main.main.undoRedo.add(c);
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250 | }
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251 |
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252 | Main.map.mapView.removeTemporaryLayer(this);
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253 | mode = null;
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254 | updateStatusLine();
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255 | Main.map.mapView.repaint();
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256 | }
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257 |
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258 | @Override public String getModeHelpText() {
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259 | if (mode == Mode.select) {
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260 | return tr("Release the mouse button to select the objects in the rectangle.");
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261 | } else if (mode == Mode.EXTRUDE) {
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262 | return tr("Draw a rectangle of the desired size, then release the mouse button.");
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263 | } else if (mode == Mode.rotate) {
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264 | return tr("Release the mouse button to stop rotating.");
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265 | } else {
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266 | return tr("Drag a way segment to make a rectangle.");
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267 | }
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268 | }
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269 |
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270 |
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271 | }
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