altosuilib: Add distance measuring line to site map.

[fw/altos] / altosuilib / AltosSiteMap.java

diff --git a/altosuilib/AltosSiteMap.java b/altosuilib/AltosSiteMap.java
index f4143fe2433d84fbdcfeb072daee35f19772381e..f22d9531848acd4d87be60ae4b5ed06946e7d155 100644 (file)
--- a/altosuilib/AltosSiteMap.java
+++ b/altosuilib/AltosSiteMap.java
@@ -22,7 +22,7 @@ import java.awt.event.*;
 import javax.swing.*;
 import java.io.*;
 import java.lang.Math;
-import java.awt.geom.Point2D;
+import java.awt.geom.*;
 import java.util.*;
 import java.util.concurrent.*;
 import org.altusmetrum.altoslib_4.*;
@@ -50,7 +50,7 @@ class MapPoint {
        }
 }
 
-public class AltosSiteMap extends JComponent implements AltosFlightDisplay {
+public class AltosSiteMap extends JComponent implements AltosFlightDisplay, MouseMotionListener, MouseListener {
        // preferred vertical step in a tile in naut. miles
        // will actually choose a step size between x and 2x, where this
        // is 1.5x
@@ -160,6 +160,10 @@ public class AltosSiteMap extends JComponent implements AltosFlightDisplay {
        }
        */
 
+       private LatLng latlng(Point pt) {
+               return latlng(new Point2D.Double(pt.x, pt.y), scale_x, scale_y);
+       }
+
        ConcurrentHashMap<Point,AltosSiteMapTile> mapTiles = new ConcurrentHashMap<Point,AltosSiteMapTile>();
        Point2D.Double centre;
 
@@ -307,16 +311,15 @@ public class AltosSiteMap extends JComponent implements AltosFlightDisplay {
                base_location_set = false;
                circle_set = false;
                points = new LinkedList<MapPoint>();
-               for (AltosSiteMapTile tile : mapTiles.values())
-                       tile.clearMap();
+               line_start = line_end = null;
        }
 
        public void setBaseLocation(double lat, double lng) {
+               for (AltosSiteMapTile tile : mapTiles.values())
+                       tile.clearMap();
                this.lat = lat;
                this.lon = lng;
                base_location_set = true;
-               for (AltosSiteMapTile tile : mapTiles.values())
-                       tile.clearMap();
 
                centre = getBaseLocation(lat, lng);
                scrollRocketToVisible(pt(lat,lng));
@@ -442,6 +445,8 @@ public class AltosSiteMap extends JComponent implements AltosFlightDisplay {
                }
                if (circle_set)
                        draw_circle(circle_lat, circle_lon);
+               if (line_start != null)
+                       set_line();
        }
 
        public void show(final AltosState state, final AltosListenerState listener_state) {
@@ -598,14 +603,85 @@ public class AltosSiteMap extends JComponent implements AltosFlightDisplay {
                }
        }
 
-       JComponent comp = new JComponent() { };
+       JComponent comp;
+
        private GridBagLayout layout = new GridBagLayout();
 
+       LatLng  line_start, line_end;
+
+       private void set_line() {
+               if (line_start != null && line_end != null) {
+                       Point2D.Double  start = pt(line_start.lat, line_start.lng);
+                       Point2D.Double  end = pt(line_end.lat, line_end.lng);
+                       AltosGreatCircle        g = new AltosGreatCircle(line_start.lat, line_start.lng,
+                                                                        line_end.lat, line_end.lng);
+
+                       for (Point offset : mapTiles.keySet()) {
+                               AltosSiteMapTile tile = mapTiles.get(offset);
+                               Point2D.Double s, e;
+                               s = translatePoint(start, tileCoordOffset(offset));
+                               e = translatePoint(end, tileCoordOffset(offset));
+                               tile.set_line(new Line2D.Double(s.x, s.y, e.x, e.y), g.distance);
+                       }
+               } else {
+                       for (AltosSiteMapTile tile : mapTiles.values())
+                               tile.set_line(null, 0);
+               }
+       }
+
+       LatLng latlng(MouseEvent e) {
+               if (!base_location_set)
+                       return null;
+
+               Rectangle       zerozero = mapTiles.get(new Point(0, 0)).getBounds();
+
+               return latlng(-centre.x + e.getPoint().x - zerozero.x, -centre.y + e.getPoint().y - zerozero.y);
+       }
+
+       /* MouseMotionListener methods */
+       public void mouseDragged(MouseEvent e) {
+               if (!GrabNDrag.grab_n_drag(e)) {
+                       LatLng  loc = latlng(e);
+                       line_end = loc;
+                       set_line();
+               }
+       }
+
+       public void mouseMoved(MouseEvent e) {
+       }
+
+       /* MouseListener methods */
+       public void mouseClicked(MouseEvent e) {
+       }
+
+       public void mouseEntered(MouseEvent e) {
+       }
+
+       public void mouseExited(MouseEvent e) {
+       }
+
+       public void mousePressed(MouseEvent e) {
+               if (!GrabNDrag.grab_n_drag(e)) {
+                       LatLng  loc = latlng(e);
+                       line_start = loc;
+                       line_end = null;
+                       set_line();
+               }
+       }
+
+       public void mouseReleased(MouseEvent e) {
+       }
+
        JScrollPane     pane = new JScrollPane();
 
        public AltosSiteMap(int in_radius) {
                radius = in_radius;
 
+               comp = new JComponent() { };
+
+               comp.addMouseMotionListener(this);
+               comp.addMouseListener(this);
+
                GrabNDrag scroller = new GrabNDrag(comp);
 
                comp.setLayout(layout);