com.google.gwt.maps.client.overlays

Class MapCanvasProjection

java.lang.Object

com.google.gwt.core.client.JavaScriptObject

com.google.gwt.maps.client.overlays.MapCanvasProjection

public class MapCanvasProjection
extends JavaScriptObject

This object is made available to the OverlayView from within the draw method. It is not guaranteed to be initialized until draw is called.

See MapCanvasProjection API Doc

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	MapCanvasProjection() returns from another object only

Method Summary

Methods

Modifier and Type	Method and Description
LatLng	fromContainerPixelToLatLng(Point pixel) Computes the geographical coordinates from pixel coordinates in the map's container.
LatLng	fromDivPixelToLatLng(Point pixel) Computes the geographical coordinates from pixel coordinates in the div that holds the draggable map.
Point	fromLatLngToContainerPixel(LatLng latlng) Computes the pixel coordinates of the given geographical location in the DOM element the map's outer container.
void	fromLatLngToDivPixel(LatLng latlng) Computes the pixel coordinates of the given geographical location in the DOM element that holds the draggable map.
int	getWorldWidth() The width of the world in pixels in the current zoom level.
static MapCanvasProjection	newInstance() returns from another object only

Methods inherited from class com.google.gwt.core.client.JavaScriptObject

cast, createArray, createFunction, createObject, equals, hashCode, toSource, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

MapCanvasProjection

protected MapCanvasProjection()

returns from another object only

Method Detail

newInstance

public static final MapCanvasProjection newInstance()

returns from another object only

fromContainerPixelToLatLng

public final LatLng fromContainerPixelToLatLng(Point pixel)

Computes the geographical coordinates from pixel coordinates in the map's container.

Parameters:

pixel -

fromDivPixelToLatLng

public final LatLng fromDivPixelToLatLng(Point pixel)

Computes the geographical coordinates from pixel coordinates in the div that holds the draggable map.

Parameters:

pixel -

fromLatLngToContainerPixel

public final Point fromLatLngToContainerPixel(LatLng latlng)

Computes the pixel coordinates of the given geographical location in the DOM element the map's outer container.

Parameters:

latlng -

fromLatLngToDivPixel

public final void fromLatLngToDivPixel(LatLng latlng)

Computes the pixel coordinates of the given geographical location in the DOM element that holds the draggable map.

Parameters:

latlng -

getWorldWidth

public final int getWorldWidth()

The width of the world in pixels in the current zoom level. For projections with a heading angle of either 90 or 270 degress, this corresponds to the pixel span in the Y-axis.