com.mapquest.mapping.maps

Class MapTracker

java.lang.Object

com.mapquest.mapping.maps.MapTracker

All Implemented Interfaces:

MapChangeEventBatcher.MapChangeListener

Direct Known Subclasses:

ImpreciseMapTracker, PreciseMapTracker

public abstract class MapTracker
extends java.lang.Object
implements MapChangeEventBatcher.MapChangeListener

Allows a handler to receive updates when the visible map area is changed. Subclasses define exact notification behavior for map moves & resizes.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	MapTracker.MapExtentChangeListener

Field Summary

Fields

Modifier and Type	Field and Description
protected LatLngExtent	mExtent
protected MapboxMap	mMapboxMap
protected MapChangeEventBatcher	mMapChangeEventBatcher
protected MapView	mMapView

Constructor Summary

Constructors

Constructor and Description
MapTracker(MapboxMap mapboxMap, MapView mapView, MapTracker.MapExtentChangeListener mapExtentChangeListener, java.lang.Long refreshDuration)

Method Summary

Modifier and Type	Method and Description
LatLngExtent	activate() Activate the map tracker.
protected abstract LatLngExtent	buildExtent()
protected int	convertPadding(int padding) Helper method.
protected LatLngExtent	convertRectToExtent(android.graphics.Rect rect)
void	deactivate() Deactivate the map tracker.
LatLngExtent	getCurrentExtent() Gets the current map extent (visible area plus any padding).
void	notifyHandler()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface com.mapquest.mapping.maps.MapChangeEventBatcher.MapChangeListener

handleMapMove, handleMapResize

Field Detail

mMapView

protected MapView mMapView

mMapboxMap

protected MapboxMap mMapboxMap

mMapChangeEventBatcher

protected MapChangeEventBatcher mMapChangeEventBatcher

mExtent

protected LatLngExtent mExtent

Constructor Detail

MapTracker

public MapTracker(MapboxMap mapboxMap,
                  MapView mapView,
                  MapTracker.MapExtentChangeListener mapExtentChangeListener,
                  java.lang.Long refreshDuration)

Method Detail

activate

public LatLngExtent activate()

Activate the map tracker.

Returns:

The extent (with padding)

deactivate

public void deactivate()

Deactivate the map tracker.

getCurrentExtent

public LatLngExtent getCurrentExtent()

Gets the current map extent (visible area plus any padding). Undefined behavior if you call this while the tracker is not active.

Returns:

LatLngExtent from our last map move update

notifyHandler

public void notifyHandler()

buildExtent

protected abstract LatLngExtent buildExtent()

convertPadding

protected int convertPadding(int padding)

Helper method. Converts padding in pixels for pixel density

convertRectToExtent

protected LatLngExtent convertRectToExtent(android.graphics.Rect rect)