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Diffstat (limited to 'altosuilib/AltosUIMapView.java')
| -rw-r--r-- | altosuilib/AltosUIMapView.java | 462 |
1 files changed, 462 insertions, 0 deletions
diff --git a/altosuilib/AltosUIMapView.java b/altosuilib/AltosUIMapView.java new file mode 100644 index 00000000..c558118b --- /dev/null +++ b/altosuilib/AltosUIMapView.java @@ -0,0 +1,462 @@ +/* + * 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(); + } +} |