svn-gvsig-desktop / branches / v10 / applications / appgvSIG / src / com / iver / cit / gvsig / project / documents / view / toolListeners / StatusBarListener.java @ 20100
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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 com.iver.cit.gvsig.project.documents.view.toolListeners; |
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import java.awt.Cursor; |
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import java.awt.geom.Point2D; |
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import java.text.NumberFormat; |
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import org.cresques.cts.IProjection; |
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import com.iver.andami.PluginServices; |
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import com.iver.andami.ui.mdiFrame.MainFrame; |
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import com.iver.cit.gvsig.fmap.MapContext; |
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import com.iver.cit.gvsig.fmap.MapControl; |
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import com.iver.cit.gvsig.fmap.core.v02.FConstant; |
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import com.iver.cit.gvsig.fmap.tools.BehaviorException; |
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import com.iver.cit.gvsig.fmap.tools.Events.PointEvent; |
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import com.iver.cit.gvsig.fmap.tools.Listeners.PointListener; |
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import com.iver.cit.gvsig.gui.layout.Attributes; |
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/**
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* <p>Listener that displays at the status bar of the application's main frame, the value of the point coordinates of the mouse's
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* cursor on the associated <code>MapControl</code>, just as is received a <code>PointEvent</code> event.</p>
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*
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* <p>Calculates the coordinates equivalent to the point according this rules:
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* <ul>
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* <li>uses <i><code>formatDegrees(p.get{X or Y}()</code></i> if the associated <code>MapControl</code> object isn't projected.</li>
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* <li>uses <i><code>formatDegrees({MapControl's projection}.toGeo(p.get{X or Y}())</code></i> if the associated
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* <code>MapControl</code> object is projected and its <code>ViewPort</code>'s distance units are in degrees.</li>
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* <li>uses <i><code>{NumberFormat according to {@link #setFractionDigits(Point2D) #setFractionDigits(Point2D)}}.format((p.get{X or Y}()/MapContext.CHANGEM[mapControl.getViewPort().getDistanceUnits()])*MapContext.CHANGEM[mapControl.getViewPort().getMapUnits()])</code></i>
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* otherwise.</li>
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* </ul>
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* </p>
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*
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* <p>The <u>prefix</u> of the coordinate expressions will be:
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* <ul>
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* <li>Longitude "<i>Long =</i>" and latitude "<i>Lat =</i>", if the associated <i>MapControl</i> object isn't projected, or the current distance unit
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* of the <code>MapControl</code>'s view port is in degrees.</li>
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* <li>X "<i>X =</i>" and Y "<i>Y =</i>", otherwise.</li>
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* </ul>
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* </p>
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*
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* <p>And the <u>sufix</u> value:
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* <ul>
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* <li>If the associated <i>MapControl</i> object isn't projected, or the current distance unit
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* of the <code>MapControl</code>'s view port is in degrees(expected latitude or longitude), according this pattern:<br>
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* <code><b><i>S?G? M' S''</i></b></code>, having:<br>
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* <ul>
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* <li><i>S?</i> : optionally, if the value is negative, sets a "-" symbol.</li>
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* <li><i>G</i> : equivalent grades.</li>
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* <li><i>M</i> : equivalent minutes.</li>
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* <li><i>S</i> : equivalent seconds.</li>
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* </ul>
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* </li>
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* <li>Otherwise a decimal number according this rules:
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* <ul>
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* <li><i>8 decimals</i>, if is using any of the following geographic coordinate systems:
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* <ul>
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* <li><i>EPSG:4230 (known as <a href="http://en.wikipedia.org/wiki/ED50">ED50</a>)</i>.</li>
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* <li><i>EPSG:4326 (known as <a href="http://en.wikipedia.org/wiki/WGS84">WGS84</a>)</i>.</li>
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* </ul>
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* <li><i>2 decimals</i>, otherwise.</li>
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* </ul>
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* </li>
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* </ul>
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* </p>
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*
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* @author Vicente Caballero Navarro
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*/
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public class StatusBarListener implements PointListener { |
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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 = null; |
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/**
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* Format of the coordinates. Is used to set the number of decimals.
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*/
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private NumberFormat nf = null; |
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/**
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* <p>Creates a new <code>StatusBarListener</code> object.</p>
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*
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* @param mc the <code>MapControl</code> where will be applied the changes
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*/
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public StatusBarListener(MapControl mc) {
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mapControl = mc; |
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nf = NumberFormat.getInstance();
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nf.setMaximumFractionDigits(2);
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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 Cursor getCursor() { |
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return null; |
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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 false; |
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} |
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/*
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* 050211, jmorell: M?todo modificado para mejorar la manera de mostrar las
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* coordenadas geod?sicas en la barra de estado. Muestra Lat y Lon y aumenta
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* el n?mero de decimales para cuando trabajemos en coordenadas geod?sicas.
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*
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* (non-Javadoc)
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* @see com.iver.cit.gvsig.fmap.tools.Listeners.PointListener#point(com.iver.cit.gvsig.fmap.tools.Events.PointEvent)
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*/
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public void point(PointEvent event) throws BehaviorException { |
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String[] axisText = new String[2]; |
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axisText[0] = "X = "; |
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axisText[1] = "Y = "; |
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Point2D p = mapControl.getMapContext().getViewPort().toMapPoint(event.getPoint());
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setFractionDigits(p); |
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axisText = setCoorDisplayText(axisText); |
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MainFrame mF = PluginServices.getMainFrame(); |
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if (mF != null) |
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{ |
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mF.getStatusBar().setMessage("units",
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PluginServices.getText(this, FConstant.NAMES[mapControl.getMapContext().getViewPort().getDistanceUnits()]));
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// FJP: No se debe llamar a setControlValue desde aqu?, porque
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// cambia la escala, y con ella el viewPort (adem?s, de
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// la vista que no es).
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// mF.getStatusBar().setControlValue("scale",String.valueOf(mapControl.getMapContext().getScaleView()));
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// Fin
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mF.getStatusBar().setMessage("projection", mapControl.getViewPort().getProjection().getAbrev());
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String[] coords=getCoords(p); |
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mF.getStatusBar().setMessage("x",
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axisText[0] + coords[0]); |
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mF.getStatusBar().setMessage("y",
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axisText[1] + coords[1]); |
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} |
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} |
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/**
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* <p>Sets the number of decimals of the coordinates that will be displayed, according the current projection
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* of the associated <code>MapControl</code>:
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* <ul>
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* <li><i>8 decimals</i>, if is using geographical coordinates:
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* <ul>
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* <li><i>EPSG:4230 (known as <a href="http://en.wikipedia.org/wiki/ED50">ED50</a>)</i>.</li>
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* <li><i>EPSG:4326 (known as <a href="http://en.wikipedia.org/wiki/WGS84">WGS84</a>)</i>.</li>
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* </ul>
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* <li><i>2 decimals</i>, otherwise.</li>
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* </ul>
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* </p>
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*
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* @param p unused parameter
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*
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* @version 050211
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* @author jmorell.
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*/
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public void setFractionDigits(Point2D p) { |
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IProjection iProj = mapControl.getMapContext().getProjection(); |
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if (iProj.getAbrev().equals("EPSG:4326") || iProj.getAbrev().equals("EPSG:4230")) { |
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nf.setMaximumFractionDigits(8);
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} else {
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nf.setMaximumFractionDigits(2);
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} |
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} |
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/**
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* <p>Returns the coordinates equivalent to <code>p</code>:
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* <ul>
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* <li>Uses <i><code>formatDegrees(p.get{X or Y}()</code></i> if the associated <code>MapControl</code> object isn't projected.</li>
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* <li>Uses <i><code>formatDegrees({MapControl's projection}.toGeo(p.get{X or Y}())</code></i> if the associated
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* <code>MapControl</code> object is projected and its <code>ViewPort</code>'s distance units are in degrees.</li>
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* <li>Uses <i><code>{NumberFormat according to {@link #setFractionDigits(Point2D) #setFractionDigits(Point2D)}}.format((p.get{X or Y}()/MapContext.CHANGEM[mapControl.getViewPort().getDistanceUnits()])*MapContext.CHANGEM[mapControl.getViewPort().getMapUnits()])</code></i>
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* otherwise.</li>
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* </ul>
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* </p>
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*
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* @param p point 2D to convert in text coordinates according the projection of the associated <code>MapControl</code> and the
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* distance units of its <code>ViewPort</code>.
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*
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* @return coordinates equivalent to <code>p</code>, according to the algorithm explained up
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*/
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public String[] getCoords(Point2D p) { |
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String[] coords=new String[2]; |
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IProjection iProj = mapControl.getMapContext().getProjection(); |
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if (!iProj.isProjected()) {
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coords[0]=String.valueOf(formatDegrees(p.getX())); |
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coords[1]=String.valueOf(formatDegrees(p.getY())); |
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} else {
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if (mapControl.getViewPort().getDistanceUnits()==Attributes.NAMES.length-1) { |
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Point2D pgeo=iProj.toGeo(p);
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coords[0]=String.valueOf(formatDegrees(pgeo.getX())); |
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coords[1]=String.valueOf(formatDegrees(pgeo.getY())); |
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}else {
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coords[0]=String.valueOf(nf.format((p.getX()/MapContext.CHANGEM[mapControl.getViewPort().getDistanceUnits()])*MapContext.CHANGEM[mapControl.getViewPort().getMapUnits()])); |
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coords[1]=String.valueOf(nf.format((p.getY()/MapContext.CHANGEM[mapControl.getViewPort().getDistanceUnits()])*MapContext.CHANGEM[mapControl.getViewPort().getMapUnits()])); |
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} |
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} |
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return coords;
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} |
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/**
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* <p>Gets the name of the coordinates:
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* <ul>
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* <li><i>Longitude</i> and <i>Latitude</i>, if the associated <i>MapControl</i> object isn't projected, or the current distance unit
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* of the <code>MapControl</code>'s view port is in degrees.</li>
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* <li><i>X</i> and <i>Y</i>, otherwise.</li>
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* </ul>
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* </p>
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*
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* @param p array of at least two <code>String</code>, where text will be stored and returned
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*
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* @return text describing the coordinate value:
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* <ul>
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* <li>If isn't projected:
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* <ul>
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* <li><code>String[0]</code> : "Long = "</li>
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* <li><code>String[1]</code> : "Lat = "</li>
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* </ul>
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* </li>
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* <li>Otherwise:
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* <ul>
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* <li><code>String[0]</code> : "X = "</li>
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* <li><code>String[1]</code> : "Y = "</li>
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* </ul>
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* </li>
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* </ul>
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*
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* @version 050211
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* @author jmorell
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*/
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public String[] setCoorDisplayText(String[] axisText) { |
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IProjection iProj = mapControl.getMapContext().getProjection(); |
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if (!iProj.isProjected()|| mapControl.getViewPort().getDistanceUnits()==Attributes.NAMES.length-1) { |
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axisText[0] = "Lon = "; |
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axisText[1] = "Lat = "; |
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} else {
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axisText[0] = "X = "; |
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axisText[1] = "Y = "; |
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} |
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return axisText;
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} |
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/**
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* <p>Converts a decimal value (expected latitude or longitude) in degrees, and formats it according this pattern:<br>
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* <code><b><i>S?G? M' S''</i></b></code>, having:<br>
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* <ul>
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* <li><i>S?</i> : optionally, if the value is negative, sets a "-" symbol.</li>
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* <li><i>G</i> : equivalent grades.</li>
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* <li><i>M</i> : equivalent minutes.</li>
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* <li><i>S</i> : equivalent seconds.</li>
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* </ul>
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* </p>
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*
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* @param d the latitude or longitude value to convert
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*
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* @return value formatted in degrees
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*/
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private String formatDegrees(double d) { |
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String signo = d<0 ? "-" : ""; |
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d = Math.abs(d);
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long grado = 0; |
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double minuto = 0; |
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double segundo = 0; |
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grado = (long)(d);
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minuto = (d - grado) * 60;
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segundo = (minuto - (long) minuto)*60; |
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// System.out.println("Grados: " + grado);
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// System.out.println("Minutos: " + minuto);
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// System.out.println("Segundos: " + segundo);
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return signo+grado+"? "+(long) minuto+"' "+(long)segundo+"''"; |
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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.PointListener#pointDoubleClick(com.iver.cit.gvsig.fmap.tools.Events.PointEvent)
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*/
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public void pointDoubleClick(PointEvent event) throws BehaviorException { |
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// TODO Auto-generated method stub
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} |
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} |