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-rw-r--r--altosuilib/AltosUIMapView.java472
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diff --git a/altosuilib/AltosUIMapView.java b/altosuilib/AltosUIMapView.java
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--- a/altosuilib/AltosUIMapView.java
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-/*
- * 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_6;
-
-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_6.*;
-
-public class AltosUIMapView extends Component implements MouseMotionListener, MouseListener, MouseWheelListener, ComponentListener, AltosUIMapTileListener, AltosUIMapStoreListener {
-
- AltosUIMapPath path = new AltosUIMapPath();
-
- AltosUIMapLine line = new AltosUIMapLine();
-
- AltosUIMapCache cache = new AltosUIMapCache();
-
- 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.status_font);
- for (AltosUIMapTile tile : tiles.values())
- tile.set_font(AltosUILib.value_font);
- repaint();
- }
-
- public void set_units() {
- repaint();
- }
-
- 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);
- repaint();
- }
- }
-
- 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);
-
- cache.set_cache_size((getWidth() / px_size + 2) * (getHeight() / px_size + 2));
- 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 synchronized 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);
- }
- }
- }
-
- public AltosUIMapCache cache() { return cache; }
-
- /* AltosUIMapStoreListener methods */
- public synchronized 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();
- }
-}
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