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java.lang.Objectcom.google.gwt.maps.client.overlay.Overlay
public abstract class Overlay
The base class for adding objects at a specific position on top of the map.
Nested Class Summary | |
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static class |
Overlay.ConcreteOverlay
This class is used to wrap Overlays written entirely in JavaScript. |
Field Summary | |
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protected com.google.gwt.core.client.JavaScriptObject |
jsoPeer
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Constructor Summary | |
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Overlay()
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protected |
Overlay(com.google.gwt.core.client.JavaScriptObject jsoPeer)
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Method Summary | |
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protected abstract Overlay |
copy()
Returns an uninitialized copy of itself that can be added to the map. |
static Overlay |
createPeer(com.google.gwt.core.client.JavaScriptObject jsoPeer)
Used to create a new Overlay by wrapping an existing GOverlay object. |
static int |
getZIndex(double latitude)
Returns a CSS z-index value for a given latitude. |
protected abstract void |
initialize(MapWidget map)
Called by the map after the overlay is added to the map using MapWidget.addOverlay(Overlay) . |
protected abstract void |
redraw(boolean force)
Called by the map when the map display has changed. |
protected abstract void |
remove()
Called by the map after the overlay is removed from the map using MapWidget.removeOverlay(Overlay) or
MapWidget.clearOverlays() . |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
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protected final com.google.gwt.core.client.JavaScriptObject jsoPeer
Constructor Detail |
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public Overlay()
protected Overlay(com.google.gwt.core.client.JavaScriptObject jsoPeer)
Method Detail |
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public static Overlay createPeer(com.google.gwt.core.client.JavaScriptObject jsoPeer)
jsoPeer
- GOverlay object to wrap.
public static int getZIndex(double latitude)
latitude
- the latitude to retrieve the marker z-index for.
@Exported protected abstract Overlay copy()
@Exported protected abstract void initialize(MapWidget map)
MapWidget.addOverlay(Overlay)
. The overlay object can draw itself
into the different panes of the map that can be obtained using
MapWidget.getPane(com.google.gwt.maps.client.MapPaneType)
.
map
- The map this overlay has been added to.@Exported protected abstract void redraw(boolean force)
force
- The argument force will be true if the zoom level or the pixel
offset of the map view has changed, so that the pixel coordinates
need to be recomputed.@Exported protected abstract void remove()
MapWidget.removeOverlay(Overlay)
or
MapWidget.clearOverlays()
. The overlay must remove itself from the
map panes here.
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