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package cgeo.geocaching.maps;
import cgeo.geocaching.R;
import cgeo.geocaching.Settings;
import cgeo.geocaching.geopoint.Geopoint;
import cgeo.geocaching.maps.interfaces.GeneralOverlay;
import cgeo.geocaching.maps.interfaces.GeoPointImpl;
import cgeo.geocaching.maps.interfaces.MapItemFactory;
import cgeo.geocaching.maps.interfaces.MapProjectionImpl;
import cgeo.geocaching.maps.interfaces.MapViewImpl;
import cgeo.geocaching.maps.interfaces.OverlayImpl;
import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.Paint.Style;
import android.graphics.PaintFlagsDrawFilter;
import android.graphics.Point;
import android.location.Location;
import java.util.ArrayList;
import java.util.List;
public class PositionOverlay implements GeneralOverlay {
private Location coordinates = null;
private GeoPointImpl location = null;
private float heading = 0f;
private Paint accuracyCircle = null;
private Paint historyLine = null;
private Paint historyLineShadow = null;
private Point center = new Point();
private Point left = new Point();
private Bitmap arrow = null;
private int widthArrowHalf = 0;
private int heightArrowHalf = 0;
private PaintFlagsDrawFilter setfil = null;
private PaintFlagsDrawFilter remfil = null;
private Location historyRecent = null;
private List<Location> history = new ArrayList<Location>();
private Point historyPointN = new Point();
private Point historyPointP = new Point();
private Activity activity;
private MapItemFactory mapItemFactory = null;
private OverlayImpl ovlImpl = null;
public PositionOverlay(Activity activity, OverlayImpl ovlImpl) {
this.activity = activity;
this.mapItemFactory = Settings.getMapProvider().getMapItemFactory();
this.ovlImpl = ovlImpl;
}
public void setCoordinates(Location coordinatesIn) {
coordinates = coordinatesIn;
location = mapItemFactory.getGeoPointBase(new Geopoint(coordinates));
}
public Location getCoordinates() {
return coordinates;
}
public void setHeading(float bearingNow) {
heading = bearingNow;
}
public float getHeading() {
return heading;
}
@Override
public void drawOverlayBitmap(Canvas canvas, Point drawPosition,
MapProjectionImpl projection, byte drawZoomLevel) {
drawInternal(canvas, projection);
}
@Override
public void draw(Canvas canvas, MapViewImpl mapView, boolean shadow) {
drawInternal(canvas, mapView.getMapProjection());
}
private void drawInternal(Canvas canvas, MapProjectionImpl projection) {
if (coordinates == null || location == null) {
return;
}
if (accuracyCircle == null) {
accuracyCircle = new Paint();
accuracyCircle.setAntiAlias(true);
accuracyCircle.setStrokeWidth(1.0f);
}
if (historyLine == null) {
historyLine = new Paint();
historyLine.setAntiAlias(true);
historyLine.setStrokeWidth(3.0f);
historyLine.setColor(0xFFFFFFFF);
}
if (historyLineShadow == null) {
historyLineShadow = new Paint();
historyLineShadow.setAntiAlias(true);
historyLineShadow.setStrokeWidth(7.0f);
historyLineShadow.setColor(0x66000000);
}
if (setfil == null) {
setfil = new PaintFlagsDrawFilter(0, Paint.FILTER_BITMAP_FLAG);
}
if (remfil == null) {
remfil = new PaintFlagsDrawFilter(Paint.FILTER_BITMAP_FLAG, 0);
}
canvas.setDrawFilter(setfil);
double latitude = coordinates.getLatitude();
double longitude = coordinates.getLongitude();
float accuracy = coordinates.getAccuracy();
float[] result = new float[1];
Location.distanceBetween(latitude, longitude, latitude, longitude + 1, result);
float longitudeLineDistance = result[0];
final Geopoint leftCoords = new Geopoint(latitude, longitude - accuracy / longitudeLineDistance);
GeoPointImpl leftGeo = mapItemFactory.getGeoPointBase(leftCoords);
projection.toPixels(leftGeo, left);
projection.toPixels(location, center);
int radius = center.x - left.x;
accuracyCircle.setColor(0x66000000);
accuracyCircle.setStyle(Style.STROKE);
canvas.drawCircle(center.x, center.y, radius, accuracyCircle);
accuracyCircle.setColor(0x08000000);
accuracyCircle.setStyle(Style.FILL);
canvas.drawCircle(center.x, center.y, radius, accuracyCircle);
if (coordinates.getAccuracy() < 50f && ((historyRecent != null && historyRecent.distanceTo(coordinates) > 5.0) || historyRecent == null)) {
if (historyRecent != null) {
history.add(historyRecent);
}
historyRecent = coordinates;
int toRemove = history.size() - 700;
if (toRemove > 0) {
for (int cnt = 0; cnt < toRemove; cnt++) {
history.remove(cnt);
}
}
}
if (Settings.isMapTrail()) {
int size = history.size();
if (size > 1) {
int alpha;
int alphaCnt = size - 201;
if (alphaCnt < 1) {
alphaCnt = 1;
}
for (int cnt = 1; cnt < size; cnt++) {
Location prev = history.get(cnt - 1);
Location now = history.get(cnt);
if (prev != null && now != null) {
projection.toPixels(mapItemFactory.getGeoPointBase(new Geopoint(prev)), historyPointP);
projection.toPixels(mapItemFactory.getGeoPointBase(new Geopoint(now)), historyPointN);
if ((alphaCnt - cnt) > 0) {
alpha = 255 / (alphaCnt - cnt);
}
else {
alpha = 255;
}
historyLineShadow.setAlpha(alpha);
historyLine.setAlpha(alpha);
canvas.drawLine(historyPointP.x, historyPointP.y, historyPointN.x, historyPointN.y, historyLineShadow);
canvas.drawLine(historyPointP.x, historyPointP.y, historyPointN.x, historyPointN.y, historyLine);
}
}
}
if (size > 0) {
Location prev = history.get(size - 1);
Location now = coordinates;
if (prev != null && now != null) {
projection.toPixels(mapItemFactory.getGeoPointBase(new Geopoint(prev)), historyPointP);
projection.toPixels(mapItemFactory.getGeoPointBase(new Geopoint(now)), historyPointN);
historyLineShadow.setAlpha(255);
historyLine.setAlpha(255);
canvas.drawLine(historyPointP.x, historyPointP.y, historyPointN.x, historyPointN.y, historyLineShadow);
canvas.drawLine(historyPointP.x, historyPointP.y, historyPointN.x, historyPointN.y, historyLine);
}
}
}
if (arrow == null) {
arrow = BitmapFactory.decodeResource(activity.getResources(), R.drawable.my_location_chevron);
widthArrowHalf = arrow.getWidth() / 2;
heightArrowHalf = arrow.getHeight() / 2;
}
int marginLeft;
int marginTop;
marginLeft = center.x - widthArrowHalf;
marginTop = center.y - heightArrowHalf;
Matrix matrix = new Matrix();
matrix.setRotate(heading, widthArrowHalf, heightArrowHalf);
matrix.postTranslate(marginLeft, marginTop);
canvas.drawBitmap(arrow, matrix, null);
canvas.setDrawFilter(remfil);
//super.draw(canvas, mapView, shadow);
}
@Override
public OverlayImpl getOverlayImpl() {
return this.ovlImpl;
}
}
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