org.deegree_impl.clients.wmsclient2.control
Class ZoomInListener

java.lang.Object
  org.deegree_impl.enterprise.control.AbstractListener
      org.deegree_impl.clients.wmsclient2.control.AbstractMapListener
          org.deegree_impl.clients.wmsclient2.control.ZoomInListener

All Implemented Interfaces:

java.util.EventListener, WebListener

public class ZoomInListener

extends AbstractMapListener

will be called if the client forces a zoomin action. the zoomin will be performed by setting the map boundaries to the rectangle selected by the client or centering the map onto the point the user had mouse-clicked to. the point or the rectangle is defined within the settings that are contained within the MapClientEvent.

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Version:

$Revision: 1.7 $ $Date: 2004/02/09 07:59:22 $

Author:

Andreas Poth, Katharina Lupp

Field Summary

Fields inherited from class org.deegree_impl.enterprise.control.AbstractListener

Constructor Summary

ZoomInListener()

Method Summary

void	actionPerformed(FormEvent event) the method will be called by the MapListener if a zoomin action/event occurs.
protected double	getScale(WMSGetMapRequest mrm) the method returns the scale of the map defined as diagonal size of a pixel at the center of the map.
private WMSGetMapRequest	modifyModelToPointZoom(WMSClientConfiguration config, java.util.HashMap model)
private WMSGetMapRequest	modifyModelToZoomInByRect(WMSClientConfiguration config, java.util.HashMap model) The method performs a "zoom in by rectangle" to the map model.
protected java.util.HashMap	toMap(java.lang.String request) maps a string representation of a request to a HashMap
private void	zoomIn(FormEvent event) the method perfomrs a "zoom in" on the map model.

Methods inherited from class org.deegree_impl.enterprise.control.AbstractListener

getAlternativeNextPage, getNextPage, getRequest, getReturnValue, gotoErrorPage, handle, setAlternativeNextPage, setDefaultAlternativeNextPage, setDefaultNextPage, setNextPage, setReturnValue, toModel

Methods inherited from class java.lang.Object

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

Constructor Detail

ZoomInListener

public ZoomInListener()

Method Detail

actionPerformed

public void actionPerformed(FormEvent event)

the method will be called by the MapListener if a zoomin action/event occurs.

Specified by:

actionPerformed in interface WebListener

Overrides:

actionPerformed in class AbstractMapListener

Parameters:

event -

zoomIn

private void zoomIn(FormEvent event)

the method perfomrs a "zoom in" on the map model. This means the map will be zoomed and recentered onto a specified point or rectangle . Usually this will be the point the user clicked on the map or a rectangle he had drag with the mouse.

modifyModelToPointZoom

private WMSGetMapRequest modifyModelToPointZoom(WMSClientConfiguration config,
                                                java.util.HashMap model)
                                         throws InconsistentRequestException,
                                                XMLParsingException,
                                                java.net.MalformedURLException

Throws:

InconsistentRequestException

XMLParsingException

java.net.MalformedURLException

modifyModelToZoomInByRect

private WMSGetMapRequest modifyModelToZoomInByRect(WMSClientConfiguration config,
                                                   java.util.HashMap model)
                                            throws InconsistentRequestException,
                                                   XMLParsingException,
                                                   java.net.MalformedURLException

The method performs a "zoom in by rectangle" to the map model. This means that the map is set to a new bounding box that is smaller then the previous one. Usually the user defines the new bounding box by dragging a rectangle on the map.

Throws:

InconsistentRequestException

XMLParsingException

java.net.MalformedURLException

toMap

protected java.util.HashMap toMap(java.lang.String request)

maps a string representation of a request to a HashMap

getScale

protected double getScale(WMSGetMapRequest mrm)

the method returns the scale of the map defined as diagonal size of a pixel at the center of the map.