--- /dev/null
+/*
+ * Copyright © 2014 Keith Packard <keithp@keithp.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+
+package org.altusmetrum.altosuilib_2;
+
+import java.awt.*;
+import java.awt.event.*;
+import java.awt.image.*;
+import javax.swing.*;
+import java.io.*;
+import java.lang.*;
+import java.awt.geom.*;
+import java.util.*;
+import java.util.concurrent.*;
+import org.altusmetrum.altoslib_4.*;
+
+public class AltosUIMapView extends Canvas implements MouseMotionListener, MouseListener, MouseWheelListener, ComponentListener, AltosUIMapTileListener, AltosUIMapStoreListener {
+
+ AltosUIMapPath path = new AltosUIMapPath();
+
+ AltosUIMapLine line = new AltosUIMapLine();
+
+ LinkedList<AltosUIMapMark> marks = new LinkedList<AltosUIMapMark>();
+
+ LinkedList<AltosUIMapZoomListener> zoom_listeners = new LinkedList<AltosUIMapZoomListener>();
+
+ boolean have_boost = false;
+ boolean have_landed = false;
+
+ ConcurrentHashMap<Point,AltosUIMapTile> tiles = new ConcurrentHashMap<Point,AltosUIMapTile>();
+
+ static final int default_zoom = 15;
+ static final int min_zoom = 3;
+ static final int max_zoom = 21;
+ static final int px_size = 512;
+
+ int load_radius;
+ AltosUILatLon load_centre = null;
+ AltosUIMapTileListener load_listener;
+
+ int zoom = default_zoom;
+ int maptype = AltosUIMap.maptype_default;
+
+ long user_input_time;
+
+ /* Milliseconds to wait after user action before auto-scrolling
+ */
+ static final long auto_scroll_delay = 20 * 1000;
+
+ AltosUIMapTransform transform;
+ AltosUILatLon centre;
+
+ public void set_font() {
+ line.set_font(AltosUILib.value_font);
+ for (AltosUIMapTile tile : tiles.values())
+ tile.set_font(AltosUILib.value_font);
+ }
+
+ private boolean is_drag_event(MouseEvent e) {
+ return e.getModifiers() == InputEvent.BUTTON1_MASK;
+ }
+
+ Point drag_start;
+
+ private void drag(MouseEvent e) {
+ if (drag_start == null)
+ return;
+
+ int dx = e.getPoint().x - drag_start.x;
+ int dy = e.getPoint().y - drag_start.y;
+
+ AltosUILatLon new_centre = transform.screen_lat_lon(new Point(getWidth() / 2 - dx, getHeight() / 2 - dy));
+ centre (new_centre.lat, new_centre.lon);
+ drag_start = e.getPoint();
+ }
+
+ private void drag_start(MouseEvent e) {
+ drag_start = e.getPoint();
+ }
+
+ private void notice_user_input() {
+ user_input_time = System.currentTimeMillis();
+ }
+
+ private boolean recent_user_input() {
+ return (System.currentTimeMillis() - user_input_time) < auto_scroll_delay;
+ }
+
+ /* MouseMotionListener methods */
+
+ public void mouseDragged(MouseEvent e) {
+ notice_user_input();
+ if (is_drag_event(e))
+ drag(e);
+ else {
+ line.dragged(e, transform);
+ repaint();
+ }
+ }
+
+ 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) {
+ notice_user_input();
+ if (is_drag_event(e))
+ drag_start(e);
+ else
+ line.pressed(e, transform);
+ }
+
+ public void mouseReleased(MouseEvent e) {
+ }
+
+ /* MouseWheelListener methods */
+
+ public void mouseWheelMoved(MouseWheelEvent e) {
+ int zoom_change = e.getWheelRotation();
+
+ notice_user_input();
+ AltosUILatLon mouse_lat_lon = transform.screen_lat_lon(e.getPoint());
+ set_zoom(zoom() - zoom_change);
+
+ Point2D.Double new_mouse = transform.screen(mouse_lat_lon);
+
+ int dx = getWidth()/2 - e.getPoint().x;
+ int dy = getHeight()/2 - e.getPoint().y;
+
+ AltosUILatLon new_centre = transform.screen_lat_lon(new Point((int) new_mouse.x + dx, (int) new_mouse.y + dy));
+
+ centre(new_centre.lat, new_centre.lon);
+ }
+
+ /* ComponentListener methods */
+
+ public void componentHidden(ComponentEvent e) {
+ }
+
+ public void componentMoved(ComponentEvent e) {
+ }
+
+ public void componentResized(ComponentEvent e) {
+ set_transform();
+ }
+
+ public void componentShown(ComponentEvent e) {
+ set_transform();
+ }
+
+ public void repaint(Rectangle r, int pad) {
+ repaint(r.x - pad, r.y - pad, r.width + pad*2, r.height + pad*2);
+ }
+
+ public void repaint(AltosUIMapRectangle rect, int pad) {
+ repaint (transform.screen(rect), pad);
+ }
+
+ private boolean far_from_centre(AltosUILatLon lat_lon) {
+
+ if (centre == null || transform == null)
+ return true;
+
+ Point2D.Double screen = transform.screen(lat_lon);
+
+ int width = getWidth();
+ int dx = Math.abs ((int) screen.x - width/2);
+
+ if (dx > width / 4)
+ return true;
+
+ int height = getHeight();
+ int dy = Math.abs ((int) screen.y - height/2);
+
+ if (dy > height / 4)
+ return true;
+
+ return false;
+ }
+
+ public void show(AltosState state, AltosListenerState listener_state) {
+
+ /* If insufficient gps data, nothing to update
+ */
+ AltosGPS gps = state.gps;
+
+ if (gps == null)
+ return;
+
+ if (!gps.locked && gps.nsat < 4)
+ return;
+
+ AltosUIMapRectangle damage = path.add(gps.lat, gps.lon, state.state);
+
+ switch (state.state) {
+ case AltosLib.ao_flight_boost:
+ if (!have_boost) {
+ add_mark(gps.lat, gps.lon, state.state);
+ have_boost = true;
+ }
+ break;
+ case AltosLib.ao_flight_landed:
+ if (!have_landed) {
+ add_mark(gps.lat, gps.lon, state.state);
+ have_landed = true;
+ }
+ break;
+ }
+
+ if (damage != null)
+ repaint(damage, AltosUIMapPath.stroke_width);
+ maybe_centre(gps.lat, gps.lon);
+ }
+
+ private void set_transform() {
+ Rectangle bounds = getBounds();
+
+ transform = new AltosUIMapTransform(bounds.width, bounds.height, zoom, centre);
+ repaint();
+ }
+
+ public boolean set_zoom(int zoom) {
+ if (min_zoom <= zoom && zoom <= max_zoom && zoom != this.zoom) {
+ this.zoom = zoom;
+ tiles.clear();
+ set_transform();
+
+ for (AltosUIMapZoomListener listener : zoom_listeners)
+ listener.zoom_changed(this.zoom);
+
+ return true;
+ }
+ return false;
+ }
+
+ public void add_zoom_listener(AltosUIMapZoomListener listener) {
+ if (!zoom_listeners.contains(listener))
+ zoom_listeners.add(listener);
+ }
+
+ public void remove_zoom_listener(AltosUIMapZoomListener listener) {
+ zoom_listeners.remove(listener);
+ }
+
+ public void set_load_params(double lat, double lon, int radius, AltosUIMapTileListener listener) {
+ load_centre = new AltosUILatLon(lat, lon);
+ load_radius = radius;
+ load_listener = listener;
+ centre(lat, lon);
+ make_tiles();
+ for (AltosUIMapTile tile : tiles.values()) {
+ tile.add_store_listener(this);
+ if (tile.store_status() != AltosUIMapStore.loading)
+ listener.notify_tile(tile, tile.store_status());
+ }
+ repaint();
+ }
+
+ public boolean all_fetched() {
+ for (AltosUIMapTile tile : tiles.values()) {
+ if (tile.store_status() == AltosUIMapStore.loading)
+ return false;
+ }
+ return true;
+ }
+
+ public boolean set_maptype(int maptype) {
+ if (maptype != this.maptype) {
+ this.maptype = maptype;
+ tiles.clear();
+ repaint();
+ return true;
+ }
+ return false;
+ }
+
+ public int get_maptype() {
+ return maptype;
+ }
+
+ public int zoom() {
+ return zoom;
+ }
+
+ public void centre(AltosUILatLon lat_lon) {
+ centre = lat_lon;
+ set_transform();
+ }
+
+ public void centre(double lat, double lon) {
+ centre(new AltosUILatLon(lat, lon));
+ }
+
+ public void maybe_centre(double lat, double lon) {
+ AltosUILatLon lat_lon = new AltosUILatLon(lat, lon);
+ if (centre == null || (!recent_user_input() && far_from_centre(lat_lon)))
+ centre(lat_lon);
+ }
+
+ private VolatileImage create_back_buffer() {
+ return getGraphicsConfiguration().createCompatibleVolatileImage(getWidth(), getHeight());
+ }
+
+ private Point floor(Point2D.Double point) {
+ return new Point ((int) Math.floor(point.x / px_size) * px_size,
+ (int) Math.floor(point.y / px_size) * px_size);
+ }
+
+ private Point ceil(Point2D.Double point) {
+ return new Point ((int) Math.ceil(point.x / px_size) * px_size,
+ (int) Math.ceil(point.y / px_size) * px_size);
+ }
+
+ private void make_tiles() {
+ Point upper_left;
+ Point lower_right;
+
+ if (load_centre != null) {
+ Point centre = floor(transform.point(load_centre));
+
+ upper_left = new Point(centre.x - load_radius * px_size,
+ centre.y - load_radius * px_size);
+ lower_right = new Point(centre.x + load_radius * px_size,
+ centre.y + load_radius * px_size);
+ } else {
+ upper_left = floor(transform.screen_point(new Point(0, 0)));
+ lower_right = floor(transform.screen_point(new Point(getWidth(), getHeight())));
+ }
+ LinkedList<Point> to_remove = new LinkedList<Point>();
+
+ for (Point point : tiles.keySet()) {
+ if (point.x < upper_left.x || lower_right.x < point.x ||
+ point.y < upper_left.y || lower_right.y < point.y) {
+ to_remove.add(point);
+ }
+ }
+
+ for (Point point : to_remove)
+ tiles.remove(point);
+
+ AltosUIMapCache.set_cache_size(((lower_right.y - upper_left.y) / px_size + 1) * ((lower_right.x - upper_left.x) / px_size + 1));
+ for (int y = upper_left.y; y <= lower_right.y; y += px_size) {
+ for (int x = upper_left.x; x <= lower_right.x; x += px_size) {
+ Point point = new Point(x, y);
+
+ if (!tiles.containsKey(point)) {
+ AltosUILatLon ul = transform.lat_lon(new Point2D.Double(x, y));
+ AltosUILatLon center = transform.lat_lon(new Point2D.Double(x + px_size/2, y + px_size/2));
+ AltosUIMapTile tile = new AltosUIMapTile(this, ul, center, zoom, maptype,
+ px_size, AltosUILib.value_font);
+ tiles.put(point, tile);
+ }
+ }
+ }
+ }
+
+ /* AltosUIMapTileListener methods */
+ public void notify_tile(AltosUIMapTile tile, int status) {
+ for (Point point : tiles.keySet()) {
+ if (tile == tiles.get(point)) {
+ Point screen = transform.screen(point);
+ repaint(screen.x, screen.y, px_size, px_size);
+ }
+ }
+ }
+
+ /* AltosUIMapStoreListener methods */
+ public void notify_store(AltosUIMapStore store, int status) {
+ if (load_listener != null) {
+ for (AltosUIMapTile tile : tiles.values())
+ if (store.equals(tile.store))
+ load_listener.notify_tile(tile, status);
+ }
+ }
+
+ private void do_paint(Graphics g) {
+ Graphics2D g2d = (Graphics2D) g;
+
+ make_tiles();
+
+ for (AltosUIMapTile tile : tiles.values())
+ tile.paint(g2d, transform);
+
+ synchronized(marks) {
+ for (AltosUIMapMark mark : marks)
+ mark.paint(g2d, transform);
+ }
+
+ path.paint(g2d, transform);
+
+ line.paint(g2d, transform);
+ }
+
+ public void paint(Graphics g) {
+
+ VolatileImage back_buffer = create_back_buffer();
+ do {
+ GraphicsConfiguration gc = getGraphicsConfiguration();
+ int code = back_buffer.validate(gc);
+ if (code == VolatileImage.IMAGE_INCOMPATIBLE)
+ back_buffer = create_back_buffer();
+
+ Graphics g_back = back_buffer.getGraphics();
+ g_back.setClip(g.getClip());
+ do_paint(g_back);
+ g_back.dispose();
+
+ g.drawImage(back_buffer, 0, 0, this);
+ } while (back_buffer.contentsLost());
+ back_buffer.flush();
+ }
+
+ public void update(Graphics g) {
+ paint(g);
+ }
+
+ public void add_mark(double lat, double lon, int state) {
+ synchronized(marks) {
+ marks.add(new AltosUIMapMark(lat, lon, state));
+ }
+ repaint();
+ }
+
+ public void clear_marks() {
+ synchronized(marks) {
+ marks.clear();
+ }
+ }
+
+ public AltosUIMapView() {
+ centre(0, 0);
+
+ addComponentListener(this);
+ addMouseMotionListener(this);
+ addMouseListener(this);
+ addMouseWheelListener(this);
+ set_font();
+ }
+}
projects / fw / altos / blobdiff