svn-gvsig-desktop / trunk / examples / exaExample1 / src / com / iver / example / tools / MyInfoListener.java @ 40402
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/*
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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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*/
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package com.iver.example.tools; |
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import java.awt.Cursor; |
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import java.awt.geom.Point2D; |
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import com.hardcode.gdbms.driver.exceptions.ReadDriverException; |
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import com.hardcode.gdbms.engine.data.DataSource; |
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import com.hardcode.gdbms.engine.values.Value; |
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import com.iver.andami.PluginServices; |
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import com.iver.cit.gvsig.exceptions.visitors.VisitorException; |
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import com.iver.cit.gvsig.fmap.MapControl; |
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import com.iver.cit.gvsig.fmap.layers.FBitSet; |
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import com.iver.cit.gvsig.fmap.layers.FLayer; |
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import com.iver.cit.gvsig.fmap.layers.FLayers; |
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import com.iver.cit.gvsig.fmap.layers.layerOperations.AlphanumericData; |
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import com.iver.cit.gvsig.fmap.layers.layerOperations.VectorialData; |
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import com.iver.cit.gvsig.fmap.operations.strategies.QueryByPointVisitor; |
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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.example.dialogs.MyInfoDlg; |
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public class MyInfoListener implements PointListener { |
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private MapControl mapCtrl;
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private Cursor cur = java.awt.Cursor.getPredefinedCursor(Cursor.HAND_CURSOR); |
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public MyInfoListener(MapControl mc) {
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this.mapCtrl = mc;
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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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* The PointEvent method bring you a point in pixel coordinates. You
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* need to transform it to world coordinates. The class to do conversions
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* is ViewPort, obtained thru the MapContext of mapCtrl.
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*/
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public void point(PointEvent event) throws BehaviorException { |
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Point2D pReal = mapCtrl.getMapContext().getViewPort().toMapPoint(event.getPoint());
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MyInfoDlg dlg = new MyInfoDlg();
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dlg = (MyInfoDlg) PluginServices.getMDIManager().addWindow(dlg); |
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/* We will use a Visitor pattern to query the layer and
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* to obtain a FBitSet (the selected items). Then, we iterate thru
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* selection and extract the needed information from the dataSource.
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*/
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QueryByPointVisitor visitor = new QueryByPointVisitor();
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FLayers lyrs = mapCtrl.getMapContext().getLayers(); |
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FLayer lyrProvin = lyrs.getLayer("Provin.shp");
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visitor.setLayer(lyrProvin); |
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visitor.setQueriedPoint(pReal); |
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visitor.setTolerance(5.0);
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try {
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((VectorialData) lyrProvin).process(visitor); |
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FBitSet selection = visitor.getBitSet(); |
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DataSource ds = ((AlphanumericData) lyrProvin).getRecordset();
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ds.start(); |
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int idField = ds.getFieldIndexByName("NOM_PROVIN"); |
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int numReg = 0; |
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Value strNomProvin = null;
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while ((numReg = selection.nextSetBit(numReg)) >= 0) |
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{ |
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strNomProvin = ds.getFieldValue(numReg, idField); |
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numReg++; |
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} |
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ds.stop(); |
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dlg.setProvince(strNomProvin.toString()); |
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// dlg.setProvince("En un lugar de la Mancha");
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} catch (ReadDriverException e) {
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// TODO Auto-generated catch block
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e.printStackTrace(); |
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} catch (VisitorException e) {
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// TODO Auto-generated catch block
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e.printStackTrace(); |
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} |
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} |
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public Cursor getCursor() { |
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return cur;
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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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public void pointDoubleClick(PointEvent event) throws BehaviorException { |
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// TODO Auto-generated method stub
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} |
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} |