Revision 10436 branches/simbologia/libraries/libFMap/src/com/iver/cit/gvsig/fmap/rendering/styling/DefaultLabelingStrategy.java

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DefaultLabelingStrategy.java
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*
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* $Id$
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* $Log$
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* Revision 1.1.2.4  2007-02-15 16:23:44  jaume
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* Revision 1.1.2.5  2007-02-21 07:34:08  jaume
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* labeling starts working
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*
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* Revision 1.1.2.4  2007/02/15 16:23:44  jaume
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* *** empty log message ***
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* Revision 1.1.2.3  2007/02/09 07:47:05  jaume
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import java.awt.geom.AffineTransform;
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import java.awt.geom.Rectangle2D;
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import java.awt.image.BufferedImage;
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import java.util.Hashtable;
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import java.util.logging.Level;
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import java.util.logging.Logger;
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import com.iver.cit.gvsig.fmap.DriverException;


  		




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import com.iver.cit.gvsig.fmap.ViewPort;


  		




  
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import com.iver.cit.gvsig.fmap.core.FPoint2D;


  		




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import com.iver.cit.gvsig.fmap.core.FShape;


  		




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import com.iver.cit.gvsig.fmap.core.IGeometry;


  		




  
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import com.iver.cit.gvsig.fmap.core.TextPath;


  		




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import com.iver.cit.gvsig.fmap.core.symbols.TextSymbol;


  		




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import com.iver.cit.gvsig.fmap.drivers.DriverIOException;


  		




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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.FLyrVect;


  		




  
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import com.iver.cit.gvsig.fmap.layers.ReadableVectorial;


  		




  
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import com.iver.cit.gvsig.fmap.layers.SelectableDataSource;


  		




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import com.iver.utiles.XMLEntity;


  		




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import com.iver.utiles.swing.threads.Cancellable;


  		




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	private IPlacementConstraints placementConstraints;


  		




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	private FLyrVect layer;


  		




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	private IZoomConstraints zoomConstraints;


  		




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	private Hashtable textPaths = new Hashtable(), texts = new Hashtable();


  		




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	protected DefaultLabelingStrategy(FLayer layer) throws DriverException {


  		




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		FLyrVect l = (FLyrVect) layer;


  		




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		this.layer = l;


  		




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		 FBitSet bs = layer.queryByRect(theExtent);


  		




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		 LabelClass lc = method.getDefaultLabelClass();


  		




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		 ReadableVectorial rv = layer.getSource();


  		




  
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		 SelectableDataSource sds = rv.getRecordset();


  		




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		 TextSymbol sym = lc.getLabelSymbol();


  		




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		 for(int i=bs.nextSetBit(0); i>=0 && !cancel.isCanceled(); i=bs.nextSetBit(i+1)) {


  		




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			 IGeometry geom;


  		




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			 try {


  		




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				 geom = layer.getSource().getShape(i);


  		




  
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				 Integer index = new Integer(i);


  		




  
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				 String text = getText(index, sds);


  		




  
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				 sym.setText(text);


  		




  
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//				 System.err.println(index+","+text);


  		




  
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				 geom = rv.getShape(i);


  		




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				 FShape shp = placementConstraints.getLocationFor(geom, sym, null);


  		




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				 AffineTransform at = viewPort.getAffineTransform();


  		




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				 // to screen coordinates


  		




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				 shp.transform(at);


  		




  
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				 sym.draw(g, at, shp);


  		




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			 } catch (DriverIOException e) {


  		




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				 // TODO Auto-generated catch block


  		




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				 logger.log(Level.SEVERE, "Draw label for "+i+"th shape of "+layer.getName());


  		




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			 }


  		




  
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			 } catch (com.hardcode.gdbms.engine.data.driver.DriverException e) {


  		




  
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				 logger.log(Level.SEVERE, "Getting label text for "+i+"th shape of "+layer.getName());


  		




  
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			}


  		




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		 }


  		




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	}


  		




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	private String getText(Integer index, SelectableDataSource sds) throws com.hardcode.gdbms.engine.data.driver.DriverException {


  		




  
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		String text = (String) texts.get(index);


  		




  
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		if (text == null) {


  		




  
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			String expr = method.getDefaultLabelClass().getLabelExpression();


  		




  
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			// TODO el analizador sint?ctico de momento s?lo pilla un valor del combo por 


  		




  
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			// defecto


  		




  
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			String fieldName = expr.replaceAll("\\[", "").replaceAll("\\]", "").trim();


  		




  
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			text = sds.getFieldValue(index.longValue(), sds.getFieldIndexByName(fieldName)).toString();


  		




  
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			texts.put(index, text);


  		




  
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		}


  		




  
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		return text;


  		




  
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	}


  		




  
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	private TextPath getTreePath(Integer index, Graphics2D g, FShape shp, char[] text) {


  		




  
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		TextPath tp = (TextPath) textPaths.get(index);


  		




  
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		if (tp == null) {


  		




  
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			tp = new TextPath(g, shp, text); 


  		




  
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			textPaths.put(index, tp);


  		




  
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		}


  		




  
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		return tp;


  		




  
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	}


  		




  
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	public String getClassName() {


  		




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		return getClass().getName();


  		




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	}


  		












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