Java Code Examples for org.osmdroid.views.MapView#getProjection()

@Override
public boolean onTouchEvent(MotionEvent event, final MapView mapView) {
    if(mStyle.mAlgorithm !=
            SimpleFastPointOverlayOptions.RenderingAlgorithm.MAXIMUM_OPTIMIZATION) return false;
    switch (event.getAction()) {
        case MotionEvent.ACTION_DOWN:
            startBoundingBox = mapView.getBoundingBox();
            startProjection = mapView.getProjection();
            break;

        case MotionEvent.ACTION_MOVE:
            hasMoved = true;
            break;

        case MotionEvent.ACTION_UP:
            hasMoved = false;
            startBoundingBox = mapView.getBoundingBox();
            startProjection = mapView.getProjection();
            mapView.invalidate();
            break;
    }
    return false;
}
 

/**
   * Used to be in both {@link Polyline} and {@link Polygon}
   * Default listener for a single tap event on a Poly:
   * set the infowindow at the tapped position, and open the infowindow (if any).
   * @return true if tapped
   */
  @Override
  public boolean onSingleTapConfirmed(final MotionEvent pEvent, final MapView pMapView){
final Projection projection = pMapView.getProjection();
final GeoPoint eventPos = (GeoPoint) projection.fromPixels((int)pEvent.getX(), (int)pEvent.getY());
      final GeoPoint geoPoint;
      if (mPath != null) {
	final boolean tapped = contains(pEvent);
	if (tapped) {
		geoPoint = eventPos;
	} else {
		geoPoint = null;
	}
} else {
	final double tolerance = mOutlinePaint.getStrokeWidth() * mDensity * mDensityMultiplier;
	geoPoint = getCloseTo(eventPos, tolerance, pMapView);
}
      if (geoPoint != null) {
          return click(pMapView, geoPoint);
      }
      return false;
  }
 

public boolean isHit(MotionEvent event, MapView mapView) {
    Projection pj = mapView.getProjection();

    Point PositionPixels = new Point();
    pj.toPixels(this.Position, PositionPixels);
    Rect screenRect = pj.getIntrinsicScreenRect();
    int x = -PositionPixels.x + screenRect.left + (int) event.getX();
    int y = -PositionPixels.y + screenRect.top + (int) event.getY();
    boolean hit = this.Icon.getBounds().contains(x, y);
    return hit;
}
 

@Override
protected void draw(Canvas canvas, MapView mapView, boolean shadow) {
    if (this.Icon != null) {
        Projection pj = mapView.getProjection();
        Point PositionPixels = new Point();
        pj.toPixels(this.Position, PositionPixels);
        int width = this.Icon.getIntrinsicWidth();
        int height = this.Icon.getIntrinsicHeight();
        Rect rect = new Rect(0, 0, width, height);
        rect.offset(-((int) (this.AnchorU * (float) width)), -((int) (this.AnchorV * (float) height)));
        this.Icon.setBounds(rect);
        this.Icon.setAlpha((int) (this.Alpha * 255.0F));
        drawAt(canvas, this.Icon, PositionPixels.x, PositionPixels.y, false, 0);
    }
}
 

/**
 * From {@link Marker#hitTest(MotionEvent, MapView)}
 * @return true, if this marker was taped.
 */
protected boolean hitTest(final MotionEvent event, final MapView mapView){
    final Projection pj = mapView.getProjection();

    // sometime at higher zoomlevels pj is null
    if ((mPosition == null) || (mPositionPixels == null) || (pj == null)) return false;

    pj.toPixels(mPosition, mPositionPixels);
    final Rect screenRect = pj.getIntrinsicScreenRect();
    int x = -mPositionPixels.x + screenRect.left + (int) event.getX();
    int y = -mPositionPixels.y + screenRect.top + (int) event.getY();
    boolean hit = mIcon.getBounds().contains(x, y);
    return hit;
}
 

/**
 * Default action on tap is to select the nearest point.
 */
@Override
public boolean onSingleTapConfirmed(final MotionEvent event, final MapView mapView) {
    if(!mStyle.mClickable) return false;
    float hyp;
    Float minHyp = null;
    int closest = -1;
    Point tmp = new Point();
    Projection pj = mapView.getProjection();

    for(int i = 0; i < mPointList.size(); i++) {
        if(mPointList.get(i) == null) continue;
        // TODO avoid projecting coordinates, do a test before calling next line
        pj.toPixels(mPointList.get(i), tmp);
        if(Math.abs(event.getX() - tmp.x) > 50 || Math.abs(event.getY() - tmp.y) > 50) continue;
        hyp = (event.getX() - tmp.x) * (event.getX() - tmp.x)
                + (event.getY() - tmp.y) * (event.getY() - tmp.y);
        if(minHyp == null || hyp < minHyp) {
            minHyp = hyp;
            closest = i;
        }
    }
    if(minHyp == null) return false;
    setSelectedPoint(closest);
    mapView.invalidate();
    if(clickListener != null) clickListener.onClick(mPointList, closest);
    return true;
}
 

public MapSnapshot(final MapSnapshotable pMapSnapshotable,
                   final int pIncludeFlags,
                   final MapView pMapView) {
    this(pMapSnapshotable, pIncludeFlags,
            pMapView.getTileProvider(),
            pMapView.getOverlays(),
            pMapView.getProjection()
    );
}
 

private void drawMark(MotionEvent motionEvent, MapView mapView) {
    Projection projection = mapView.getProjection();
    GeoPoint loc = (GeoPoint) projection.fromPixels((int) motionEvent.getX(), (int) motionEvent.getY());
    OverlayItem mapItem = new OverlayItem("", "", new GeoPoint((((double) loc.getLatitudeE6()) / 1000000), (((double) loc.getLongitudeE6()) / 1000000)));
    drawMark(mapItem, false, 0);
}
 

public void moveToEventPosition(final MotionEvent event, final MapView mapView){
    float offsetY = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_MM, mDragOffsetY, mapView.getContext().getResources().getDisplayMetrics());
	final Projection pj = mapView.getProjection();
	setPosition((GeoPoint) pj.fromPixels((int)event.getX(), (int)(event.getY()-offsetY)));
	mapView.invalidate();
}
 

@Override public boolean onSingleTapConfirmed(MotionEvent e, MapView mapView){
	Projection proj = mapView.getProjection();
	GeoPoint p = (GeoPoint)proj.fromPixels((int)e.getX(), (int)e.getY());
	return mReceiver.singleTapConfirmedHelper(p);
}
 

@Override public boolean onLongPress(MotionEvent e, MapView mapView) {
Projection proj = mapView.getProjection();
GeoPoint p = (GeoPoint)proj.fromPixels((int)e.getX(), (int)e.getY());
//throw event to the receiver:
return mReceiver.longPressHelper(p);
  }
 

public IconOverlay moveTo(final MotionEvent event, final MapView mapView){
    final Projection pj = mapView.getProjection();
    moveTo(pj.fromPixels((int) event.getX(), (int) event.getY()), mapView);
    return this;
}