root / branches / v2_0_0_prep / libraries / libFMap_controls / src / org / gvsig / fmap / mapcontrol / tools / PanListenerImpl.java @ 38564
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/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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*
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* Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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*
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* For more information, contact:
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*
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* Generalitat Valenciana
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* Conselleria d'Infraestructures i Transport
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* Av. Blasco Ib??ez, 50
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* 46010 VALENCIA
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* SPAIN
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*
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* +34 963862235
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* gvsig@gva.es
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* www.gvsig.gva.es
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*
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* or
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*
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* IVER T.I. S.A
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* Salamanca 50
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* 46005 Valencia
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* Spain
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*
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* +34 963163400
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* dac@iver.es
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*/
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package org.gvsig.fmap.mapcontrol.tools; |
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import java.awt.Image; |
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import java.awt.geom.Point2D; |
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import java.awt.geom.Rectangle2D; |
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import org.gvsig.fmap.IconThemeHelper; |
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import org.gvsig.fmap.geom.Geometry.SUBTYPES; |
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import org.gvsig.fmap.geom.GeometryLocator; |
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import org.gvsig.fmap.geom.GeometryManager; |
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import org.gvsig.fmap.geom.exception.CreateEnvelopeException; |
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import org.gvsig.fmap.geom.primitive.Envelope; |
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import org.gvsig.fmap.mapcontext.ViewPort; |
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import org.gvsig.fmap.mapcontrol.MapControl; |
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import org.gvsig.fmap.mapcontrol.tools.Events.MoveEvent; |
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import org.gvsig.fmap.mapcontrol.tools.Listeners.PanListener; |
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import org.slf4j.Logger; |
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import org.slf4j.LoggerFactory; |
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/**
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* <p>Listener for moving the extent of the associated {@link MapControl MapControl} object
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* according the movement between the initial and final points of line determined by the movement
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* dragging with the third button of the mouse.</p>
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*
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* <p>Updates the extent of its <code>ViewPort</code> with the new position.</p>
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*
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* @author Vicente Caballero Navarro
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*/
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public class PanListenerImpl implements PanListener { |
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private static final GeometryManager geomManager = GeometryLocator.getGeometryManager(); |
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private static final Logger logger = LoggerFactory.getLogger(PanListenerImpl.class); |
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/**
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* The image to display when the cursor is active.
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*/
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// private final Image ipan = PluginServices.getIconTheme().get("cursor-pan").getImage();
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/**
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* Reference to the <code>MapControl</code> object that uses.
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*/
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private MapControl mapControl;
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/**
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* <p>Creates a new listener for changing the position of the extent of the associated {@link MapControl MapControl} object.</p>
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*
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* @param mapControl the <code>MapControl</code> where will be applied the changes
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*/
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public PanListenerImpl(MapControl mapControl) {
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this.mapControl = mapControl;
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} |
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/*
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* (non-Javadoc)
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* @see com.iver.cit.gvsig.fmap.tools.Listeners.PanListener#move(com.iver.cit.gvsig.fmap.tools.Events.MoveEvent)
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*/
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public void move(MoveEvent event) { |
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ViewPort vp = mapControl.getMapContext().getViewPort(); |
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Point2D from = vp.toMapPoint(event.getFrom());
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Point2D to = vp.toMapPoint(event.getTo());
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Rectangle2D extent = vp.getExtent();
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double x = extent.getX() - (to.getX() - from.getX());
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double y = extent.getY() - (to.getY() - from.getY());
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double width = extent.getWidth();
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double height = extent.getHeight();
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Envelope r; |
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try {
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r = geomManager.createEnvelope(x, y, x+width, y+height, SUBTYPES.GEOM2D); |
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vp.setEnvelope(r); |
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} catch (CreateEnvelopeException e) {
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logger.error("Error creating the envelope", e);
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} |
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} |
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/*
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* (non-Javadoc)
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* @see com.iver.cit.gvsig.fmap.tools.Listeners.ToolListener#getCursor()
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*/
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public Image getImageCursor() { |
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return IconThemeHelper.getImage("cursor-pan"); |
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} |
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/*
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* (non-Javadoc)
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* @see com.iver.cit.gvsig.fmap.tools.Listeners.ToolListener#cancelDrawing()
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*/
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public boolean cancelDrawing() { |
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return true; |
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} |
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} |