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Diffstat (limited to 'altoslib/AltosMap.java')
| -rw-r--r-- | altoslib/AltosMap.java | 485 |
1 files changed, 485 insertions, 0 deletions
diff --git a/altoslib/AltosMap.java b/altoslib/AltosMap.java new file mode 100644 index 00000000..2c93adb8 --- /dev/null +++ b/altoslib/AltosMap.java @@ -0,0 +1,485 @@ +/* + * Copyright © 2010 Anthony Towns <aj@erisian.com.au> + * + * 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.altoslib_7; + +import java.io.*; +import java.lang.*; +import java.util.*; +import java.util.concurrent.*; + +public class AltosMap implements AltosMapTileListener, AltosMapStoreListener { + + public static final int px_size = 512; + + public static final int maptype_hybrid = 0; + public static final int maptype_roadmap = 1; + public static final int maptype_satellite = 2; + public static final int maptype_terrain = 3; + public static final int maptype_default = maptype_hybrid; + + public static final int default_zoom = 15; + public static final int min_zoom = 3; + public static final int max_zoom = 21; + + public static final String[] maptype_names = { + "hybrid", + "roadmap", + "satellite", + "terrain" + }; + + public static final String[] maptype_labels = { + "Hybrid", + "Roadmap", + "Satellite", + "Terrain" + }; + + AltosMapInterface map_interface; + + AltosMapCache cache; + + public AltosMapCache cache() { return cache; } + + LinkedList<AltosMapMark> marks = new LinkedList<AltosMapMark>(); + + AltosMapPath path; + AltosMapLine line; + public AltosLatLon last_position; + + boolean have_boost = false; + boolean have_landed = false; + + ConcurrentHashMap<AltosPointInt,AltosMapTile> tiles = new ConcurrentHashMap<AltosPointInt,AltosMapTile>(); + int load_radius; + AltosLatLon load_centre = null; + AltosMapTileListener load_listener; + + int zoom = AltosMap.default_zoom; + int maptype = AltosMap.maptype_default; + + long user_input_time; + + /* Milliseconds to wait after user action before auto-scrolling + */ + static final long auto_scroll_delay = 20 * 1000; + + public AltosMapTransform transform; + AltosLatLon centre; + + public void reset() { + // nothing + } + + /* MapInterface wrapping functions */ + + public void repaint(int x, int y, int w, int h) { + map_interface.repaint(new AltosRectangle(x, y, w, h)); + } + + public void repaint(AltosMapRectangle damage, int pad) { + AltosRectangle r = transform.screen(damage); + repaint(r.x - pad, r.y - pad, r.width + pad * 2, r.height + pad * 2); + } + + public void repaint() { + map_interface.repaint(); + } + + public int width() { + return map_interface.width(); + } + + public int height() { + return map_interface.height(); + } + + public void debug(String format, Object ... arguments) { + map_interface.debug(format, arguments); + } + + static public AltosPointInt floor(AltosPointDouble point) { + return new AltosPointInt ((int) Math.floor(point.x / AltosMap.px_size) * AltosMap.px_size, + (int) Math.floor(point.y / AltosMap.px_size) * AltosMap.px_size); + } + + static public AltosPointInt ceil(AltosPointDouble point) { + return new AltosPointInt ((int) Math.ceil(point.x / AltosMap.px_size) * AltosMap.px_size, + (int) Math.ceil(point.y / AltosMap.px_size) * AltosMap.px_size); + } + + public void notice_user_input() { + user_input_time = System.currentTimeMillis(); + } + + public boolean recent_user_input() { + return (System.currentTimeMillis() - user_input_time) < auto_scroll_delay; + } + + public boolean has_centre() { + return centre != null; + } + + public boolean far_from_centre(AltosLatLon lat_lon) { + + if (centre == null || transform == null) + return true; + + AltosPointDouble screen = transform.screen(lat_lon); + + int width = width(); + int dx = Math.abs ((int) (double) screen.x - width/2); + + if (dx > width / 4) + return true; + + int height = height(); + int dy = Math.abs ((int) (double) screen.y - height/2); + + if (dy > height / 4) + return true; + + return false; + } + + public void set_transform() { + if (centre != null) { + transform = new AltosMapTransform(width(), height(), zoom, centre); + repaint(); + } + } + + private void set_zoom_label() { + map_interface.set_zoom_label(String.format("Zoom %d", get_zoom() - default_zoom)); + } + + + public boolean set_zoom(int zoom) { + notice_user_input(); + if (AltosMap.min_zoom <= zoom && zoom <= AltosMap.max_zoom && zoom != this.zoom) { + this.zoom = zoom; + tiles.clear(); + set_transform(); + set_zoom_label(); + return true; + } + return false; + } + + public boolean set_zoom_centre(int zoom, AltosPointInt centre) { + AltosLatLon mouse_lat_lon = null; + boolean ret; + + if (transform != null) + mouse_lat_lon = transform.screen_lat_lon(centre); + + ret = set_zoom(zoom); + + if (ret && mouse_lat_lon != null) { + AltosPointDouble new_mouse = transform.screen(mouse_lat_lon); + + double dx = width()/2.0 - centre.x; + double dy = height()/2.0 - centre.y; + + AltosLatLon new_centre = transform.screen_lat_lon(new AltosPointDouble(new_mouse.x + dx, new_mouse.y + dy)); + + centre(new_centre); + } + + return ret; + } + + public int get_zoom() { + return zoom; + } + + public boolean set_maptype(int maptype) { + if (maptype != this.maptype) { + this.maptype = maptype; + tiles.clear(); + repaint(); + 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; + + 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 (path != null) { + AltosMapRectangle damage = path.add(gps.lat, gps.lon, state.state); + + if (damage != null) + repaint(damage, AltosMapPath.stroke_width); + } + + last_position = new AltosLatLon(gps.lat, gps.lon); + + maybe_centre(gps.lat, gps.lon); + } + + public void centre(AltosLatLon lat_lon) { + centre = lat_lon; + set_transform(); + } + + public void centre(double lat, double lon) { + centre(new AltosLatLon(lat, lon)); + } + + public void centre(AltosState state) { + if (!state.gps.locked && state.gps.nsat < 4) + return; + centre(state.gps.lat, state.gps.lon); + } + + public void maybe_centre(double lat, double lon) { + AltosLatLon lat_lon = new AltosLatLon(lat, lon); + if (centre == null || (!recent_user_input() && far_from_centre(lat_lon))) + centre(lat_lon); + } + + public void add_mark(double lat, double lon, int state) { + synchronized(marks) { + AltosMapMark mark = map_interface.new_mark(lat, lon, state); + if (mark != null) + marks.add(mark); + } + repaint(); + } + + public void clear_marks() { + synchronized(marks) { + marks.clear(); + } + } + + private void make_tiles() { + AltosPointInt upper_left; + AltosPointInt lower_right; + + if (load_centre != null) { + AltosPointInt centre = floor(transform.point(load_centre)); + + upper_left = new AltosPointInt(centre.x - load_radius * AltosMap.px_size, + centre.y - load_radius * AltosMap.px_size); + lower_right = new AltosPointInt(centre.x + load_radius * AltosMap.px_size, + centre.y + load_radius * AltosMap.px_size); + } else { + upper_left = floor(transform.screen_point(new AltosPointInt(0, 0))); + lower_right = floor(transform.screen_point(new AltosPointInt(width(), height()))); + } + for (AltosPointInt point : tiles.keySet()) { + if (point.x < upper_left.x || lower_right.x < point.x || + point.y < upper_left.y || lower_right.y < point.y) { + tiles.remove(point); + } + } + + cache.set_cache_size((width() / AltosMap.px_size + 2) * (height() / AltosMap.px_size + 2)); + + for (int y = (int) upper_left.y; y <= lower_right.y; y += AltosMap.px_size) { + for (int x = (int) upper_left.x; x <= lower_right.x; x += AltosMap.px_size) { + AltosPointInt point = new AltosPointInt(x, y); + + if (!tiles.containsKey(point)) { + AltosLatLon ul = transform.lat_lon(point); + AltosLatLon center = transform.lat_lon(new AltosPointDouble(x + AltosMap.px_size/2, y + AltosMap.px_size/2)); + AltosMapTile tile = map_interface.new_tile(this, ul, center, zoom, maptype, px_size); + tiles.put(point, tile); + } + } + } + } + + public void set_load_params(int new_zoom, int new_type, double lat, double lon, int radius, AltosMapTileListener listener) { + if (AltosMap.min_zoom <= new_zoom && new_zoom <= AltosMap.max_zoom) + zoom = new_zoom; + maptype = new_type; + load_centre = new AltosLatLon(lat, lon); + load_radius = radius; + load_listener = listener; + centre(lat, lon); + tiles.clear(); + make_tiles(); + for (AltosMapTile tile : tiles.values()) { + tile.add_store_listener(this); + if (tile.store_status() != AltosMapTile.loading) + listener.notify_tile(tile, tile.store_status()); + } + repaint(); + } + + public String getName() { + return "Map"; + } + + public void paint() { + if (centre != null) + make_tiles(); + + if (transform == null) + return; + + for (AltosMapTile tile : tiles.values()) + tile.paint(transform); + + synchronized(marks) { + for (AltosMapMark mark : marks) + mark.paint(transform); + } + + if (path != null) + path.paint(transform); + + if (line != null) + line.paint(transform); + } + + /* AltosMapTileListener methods */ + public synchronized void notify_tile(AltosMapTile tile, int status) { + for (AltosPointInt point : tiles.keySet()) { + if (tile == tiles.get(point)) { + AltosPointInt screen = transform.screen(point); + repaint(screen.x, screen.y, AltosMap.px_size, AltosMap.px_size); + } + } + } + + /* AltosMapStoreListener methods */ + public synchronized void notify_store(AltosMapStore store, int status) { + if (load_listener != null) { + for (AltosMapTile tile : tiles.values()) + if (store.equals(tile.store)) + load_listener.notify_tile(tile, status); + } + } + + /* UI elements */ + + AltosPointInt drag_start; + + boolean dragged; + + static final double drag_far = 20; + + private void drag(int x, int y) { + if (drag_start == null) + return; + + int dx = x - drag_start.x; + int dy = y - drag_start.y; + + double distance = Math.hypot(dx, dy); + + if (distance > drag_far) + dragged = true; + + if (transform == null) { + debug("Transform not set in drag\n"); + return; + } + + AltosLatLon new_centre = transform.screen_lat_lon(new AltosPointInt(width() / 2 - dx, height() / 2 - dy)); + centre(new_centre); + drag_start = new AltosPointInt(x, y); + } + + private void drag_start(int x, int y) { + drag_start = new AltosPointInt(x, y); + dragged = false; + } + + private void drag_stop(int x, int y) { + if (!dragged) { + if (transform == null) { + debug("Transform not set in stop\n"); + return; + } + map_interface.select_object (transform.screen_lat_lon(new AltosPointInt(x,y))); + } + } + + private void line_start(int x, int y) { + if (line != null) { + line.pressed(new AltosPointInt(x, y), transform); + repaint(); + } + } + + private void line(int x, int y) { + if (line != null) { + line.dragged(new AltosPointInt(x, y), transform); + repaint(); + } + } + + public void touch_start(int x, int y, boolean is_drag) { + notice_user_input(); + if (is_drag) + drag_start(x, y); + else + line_start(x, y); + } + + public void touch_continue(int x, int y, boolean is_drag) { + notice_user_input(); + if (is_drag) + drag(x, y); + else + line(x, y); + } + + public void touch_stop(int x, int y, boolean is_drag) { + notice_user_input(); + if (is_drag) + drag_stop(x, y); + } + + public AltosMap(AltosMapInterface map_interface) { + this.map_interface = map_interface; + cache = new AltosMapCache(map_interface); + line = map_interface.new_line(); + path = map_interface.new_path(); + set_zoom_label(); + } +} |