OpenLayers.Layer.Markers

Inherits from

OpenLayers.Layer

Summary

OpenLayers.Layer.Markers
Properties
isBaseLayer	{Boolean} Markers layer is never a base layer.
markers	{Array(OpenLayers.Marker)} internal marker list
drawn	{Boolean} internal state of drawing.
Constructor
OpenLayers.Layer.Markers	Create a Markers layer.
Functions
destroy
setOpacity	Sets the opacity for all the markers.
moveTo
addMarker
removeMarker
clearMarkers	This method removes all markers from a layer.
drawMarker	Calculate the pixel location for the marker, create it, and add it to the layer’s div
getDataExtent	Calculates the max extent which includes all of the markers.

Properties

isBaseLayer

{Boolean} Markers layer is never a base layer.

markers

{Array(OpenLayers.Marker)} internal marker list

drawn

{Boolean} internal state of drawing. This is a workaround for the fact that the map does not call moveTo with a zoomChanged when the map is first starting up. This lets us catch the case where we have never drawn the layer, and draw it even if the zoom hasn’t changed.

Constructor

OpenLayers.Layer.Markers

Create a Markers layer.

Parameters

name	{String}
options	{Object} Hashtable of extra options to tag onto the layer

Functions

destroy

destroy: function()

setOpacity

setOpacity: function( opacity )

Sets the opacity for all the markers.

Parameters

opacity

{Float}

moveTo

moveTo:function( bounds,
zoomChanged,
dragging )

Parameters

bounds	{OpenLayers.Bounds}
zoomChanged	{Boolean}
dragging	{Boolean}

addMarker

addMarker: function( marker )

Parameters

marker

{OpenLayers.Marker}

removeMarker

removeMarker: function( marker )

Parameters

marker

{OpenLayers.Marker}

clearMarkers

clearMarkers: function()

This method removes all markers from a layer. The markers are not destroyed by this function, but are removed from the list of markers.

drawMarker

drawMarker: function( marker )

Calculate the pixel location for the marker, create it, and add it to the layer’s div

Parameters

marker

{OpenLayers.Marker}

getDataExtent

getDataExtent: function ()

Calculates the max extent which includes all of the markers.

Returns

{OpenLayers.Bounds}