com.mapquest.mapping.layers

Class ImpreciseMapTracker

java.lang.Object

com.mapquest.mapping.maps.MapTracker

com.mapquest.mapping.layers.ImpreciseMapTracker

All Implemented Interfaces:

MapChangeEventBatcher.MapChangeListener

public class ImpreciseMapTracker
extends MapTracker

A special kind of MapTracker for clients who really want to minimize service calls. Specify exterior padding to increase size of extent used for determining map change. When map is changed, the handler will be notified with a larger extent than is actually visible. This "notification extent" will be the visible extent plus exterior padding around edges. Uses a square extent to minimize updates on rotation. Never notifies when a smaller area is now visible, only when some map not previously included in the notification extent becomes visible.

Nested Class Summary

Nested classes/interfaces inherited from class com.mapquest.mapping.maps.MapTracker

MapTracker.MapExtentChangeListener

Field Summary

Fields inherited from class com.mapquest.mapping.maps.MapTracker

mExtent, mMapboxMap, mMapChangeEventBatcher, mMapView

Constructor Summary

Constructors

Constructor and Description
ImpreciseMapTracker(MapboxMap mapboxMap, MapView mapView, MapTracker.MapExtentChangeListener handler, int exteriorPadding, java.lang.Long refreshDuration)

Method Summary

Modifier and Type	Method and Description
protected LatLngExtent	buildExtent() Create a LatLngExtent representing the visible area on the map plus our padding.
void	handleMapMove(LatLngExtent currentExtent, double zoom)
void	handleMapResize(LatLngExtent currentExtent)

Methods inherited from class com.mapquest.mapping.maps.MapTracker

activate, convertPadding, convertRectToExtent, deactivate, getCurrentExtent, notifyHandler

Methods inherited from class java.lang.Object

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

Constructor Detail

ImpreciseMapTracker

public ImpreciseMapTracker(MapboxMap mapboxMap,
                           MapView mapView,
                           MapTracker.MapExtentChangeListener handler,
                           int exteriorPadding,
                           java.lang.Long refreshDuration)

Method Detail

handleMapMove

public void handleMapMove(LatLngExtent currentExtent,
                          double zoom)

handleMapResize

public void handleMapResize(LatLngExtent currentExtent)

buildExtent

protected LatLngExtent buildExtent()

Create a LatLngExtent representing the visible area on the map plus our padding. Creates a square extent given the largest dimension - this will rotations to fit without requiring a new request.

Specified by:

buildExtent in class MapTracker