svn-gvsig-desktop / trunk / extensions / extSymbology / src / org / gvsig / symbology / fmap / labeling / GeneralLabelingStrategy.java @ 18863
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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) 2005 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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/* CVS MESSAGES:
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*
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* $Id: GeneralLabelingStrategy.java 13749 2007-09-17 14:16:11Z jaume $
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* $Log$
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* Revision 1.2 2007-09-17 14:16:11 jaume
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* multilayer symbols sizing bug fixed
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*
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* Revision 1.1 2007/05/22 12:17:41 jaume
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* *** empty log message ***
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*
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* Revision 1.1 2007/05/22 10:05:31 jaume
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* *** empty log message ***
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*
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* Revision 1.10 2007/05/17 09:32:06 jaume
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* *** empty log message ***
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*
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* Revision 1.9 2007/05/09 11:04:58 jaume
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* refactored legend hierarchy
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*
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* Revision 1.8 2007/04/13 11:59:30 jaume
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* *** empty log message ***
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*
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* Revision 1.7 2007/04/12 14:28:43 jaume
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* basic labeling support for lines
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*
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* Revision 1.6 2007/04/11 16:01:08 jaume
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* maybe a label placer refactor
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*
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* Revision 1.5 2007/04/10 16:34:01 jaume
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* towards a styled labeling
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*
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* Revision 1.4 2007/04/02 16:34:56 jaume
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* Styled labeling (start commiting)
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*
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* Revision 1.3 2007/03/28 16:48:01 jaume
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* *** empty log message ***
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*
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* Revision 1.2 2007/03/26 14:40:38 jaume
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* added print method (BUT UNIMPLEMENTED)
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*
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* Revision 1.1 2007/03/20 16:16:20 jaume
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* refactored to use ISymbol instead of FSymbol
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*
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* Revision 1.2 2007/03/09 11:20:57 jaume
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* Advanced symbology (start committing)
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*
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* Revision 1.1 2007/03/09 08:33:43 jaume
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* *** empty log message ***
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*
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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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*
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* Revision 1.1.2.3 2007/02/09 07:47:05 jaume
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* Isymbol moved
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*
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* Revision 1.1.2.2 2007/02/02 16:21:24 jaume
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* start commiting labeling stuff
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*
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* Revision 1.1.2.1 2007/02/01 17:46:49 jaume
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* *** empty log message ***
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*
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*
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*/
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package org.gvsig.symbology.fmap.labeling; |
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import java.awt.Graphics2D; |
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import java.awt.geom.Rectangle2D; |
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import java.awt.image.BufferedImage; |
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import java.io.CharArrayReader; |
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import java.text.NumberFormat; |
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import java.util.ArrayList; |
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import java.util.TreeSet; |
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import javax.print.attribute.PrintRequestAttributeSet; |
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import org.apache.log4j.Logger; |
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import org.cresques.cts.ICoordTrans; |
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import org.gvsig.symbology.fmap.labeling.lang.Symbol; |
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import org.gvsig.symbology.fmap.labeling.parse.LabelExpressionParser; |
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import org.gvsig.symbology.fmap.labeling.parse.ParseException; |
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import org.gvsig.symbology.fmap.labeling.placements.ILabelPlacement; |
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import com.hardcode.gdbms.driver.exceptions.ReadDriverException; |
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import com.hardcode.gdbms.engine.values.Value; |
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import com.iver.cit.gvsig.fmap.ViewPort; |
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import com.iver.cit.gvsig.fmap.core.FShape; |
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import com.iver.cit.gvsig.fmap.core.IFeature; |
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import com.iver.cit.gvsig.fmap.core.IGeometry; |
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import com.iver.cit.gvsig.fmap.core.v02.FConverter; |
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import com.iver.cit.gvsig.fmap.drivers.IFeatureIterator; |
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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.rendering.styling.labeling.ILabelingMethod; |
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import com.iver.cit.gvsig.fmap.rendering.styling.labeling.ILabelingStrategy; |
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import com.iver.cit.gvsig.fmap.rendering.styling.labeling.IPlacementConstraints; |
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import com.iver.cit.gvsig.fmap.rendering.styling.labeling.IZoomConstraints; |
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import com.iver.cit.gvsig.fmap.rendering.styling.labeling.LabelClass; |
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import com.iver.cit.gvsig.fmap.rendering.styling.labeling.LabelLocationMetrics; |
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import com.iver.cit.gvsig.fmap.rendering.styling.labeling.LabelingFactory; |
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import com.iver.utiles.XMLEntity; |
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import com.iver.utiles.swing.threads.Cancellable; |
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/**
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*
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* GeneralLabelingStrategy.java
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*
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*
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* @author jaume dominguez faus - jaume.dominguez@iver.es Jan 4, 2008
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*
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*/
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public class GeneralLabelingStrategy implements ILabelingStrategy { |
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private static Logger logger = Logger.getLogger(GeneralLabelingStrategy.class); |
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private ILabelingMethod method;
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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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public void setLayer(FLayer layer) throws ReadDriverException { |
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FLyrVect l = (FLyrVect) layer; |
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this.layer = l;
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} |
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public ILabelingMethod getLabelingMethod() {
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return method;
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} |
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public void setLabelingMethod(ILabelingMethod method) { |
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this.method = method;
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} |
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public void draw(BufferedImage mapImage, Graphics2D mapGraphics, ViewPort viewPort, |
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Cancellable cancel, double dpi)
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throws ReadDriverException {
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long t1 = System.currentTimeMillis(); |
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String[] usedFields = getUsedFields(); |
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int notPlacedCount = 0; |
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int placedCount = 0; |
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ILabelPlacement placement = PlacementManager.getPlacement(getPlacementConstraints(), layer.getShapeType()); |
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/*
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* get an ordered set of the LabelClasses up on the
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* label priority
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*/
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LabelClass[] lcs = method.getLabelClasses();
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TreeSet<LabelClass> ts = new TreeSet<LabelClass>(new LabelClassComparatorByPriority()); |
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for (int i = 0; i < lcs.length; i++) ts.add(lcs[i]); |
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/*
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* now we have an ordered set, let's create a vector of
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* feature iterators
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*/
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for (LabelClass lc : ts) {
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IFeatureIterator it = method.getFeatureIteratorByLabelClass(layer, lc, viewPort, usedFields); |
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boolean bLabelsReallocatable = true; |
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BufferedImage levelImg = null, |
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bi = new BufferedImage(mapImage.getWidth(),mapImage.getHeight(),BufferedImage.TYPE_INT_ARGB); |
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Graphics2D levelGraphics = null, |
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gBi = bi.createGraphics(); |
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if (bLabelsReallocatable) {
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levelImg = new BufferedImage(mapImage.getWidth(),mapImage.getHeight(),BufferedImage.TYPE_INT_ARGB); |
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levelGraphics = bi.createGraphics(); |
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} |
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while ( !cancel.isCanceled() && it.hasNext()) {
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IFeature feat = it.next(); |
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IGeometry geom = feat.getGeometry(); |
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if (!setupLabel(feat, lc, cancel, usedFields, viewPort, dpi))
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continue;
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// Check if size is a pixel
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if (isOnePoint(viewPort, geom)) {
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continue;
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} |
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BufferedImage[] targetBis; |
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Graphics2D targetG;
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if (method.definesPriorities()) {
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if (bLabelsReallocatable) {
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targetBis = new BufferedImage[] { bi, levelImg } ; |
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targetG = levelGraphics; |
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} else {
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targetBis = new BufferedImage[] { bi } ; |
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targetG = gBi; |
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} |
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} else {
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if (bLabelsReallocatable) {
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targetBis = new BufferedImage[] { bi }; |
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targetG = gBi; |
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} else {
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targetBis = new BufferedImage[] { mapImage }; |
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targetG = mapGraphics; |
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} |
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} |
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// Place a label
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ArrayList<LabelLocationMetrics> llm = placement.guess(
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lc, |
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FConverter.transformToInts(geom, viewPort.getAffineTransform()), |
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getPlacementConstraints(), |
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0,
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cancel); |
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/*
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* search if there is room left by the previous and
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* with more priority labels, then check the current
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* level
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*/
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if (lookupAndPlaceLabel(targetBis, targetG,
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llm, placement, lc, geom, viewPort, cancel, |
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bLabelsReallocatable)) {
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placedCount++; |
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} else {
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notPlacedCount++; |
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} |
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if (bLabelsReallocatable) {
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mapGraphics.drawImage(bi, null, null); |
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} |
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} |
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} |
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/*} else {
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IFeatureIterator it = layer.getSource().getFeatureIterator(
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viewPort.getAdjustedExtent(),
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usedFields,
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viewPort.getProjection(),
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true);
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boolean bLabelsReallocatable = true;
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BufferedImage bi = null;
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Graphics2D gBi = null;
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if (bLabelsReallocatable) {
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bi = new BufferedImage(mapImage.getWidth(),mapImage.getHeight(),BufferedImage.TYPE_INT_ARGB);
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gBi = bi.createGraphics();
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}
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while ( !cancel.isCanceled() && it.hasNext()) {
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IFeature feat = it.next();
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IGeometry geom = feat.getGeometry();
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LabelClass lc = method.getFeatureIteratorByLabelClass(null, feat);
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if (!setupLabel(feat, lc, cancel, usedFields, viewPort, dpi))
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continue;
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// Check if size is a pixel
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if (isOnePoint(viewPort, geom)) {
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continue;
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}
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BufferedImage targetBi;
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Graphics2D targetG;
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if (bLabelsReallocatable) {
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targetBi = bi;
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targetG = gBi;
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} else {
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targetBi = mapImage;
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targetG = mapGraphics;
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}
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// Place a label
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ArrayList<LabelLocationMetrics> llm = placement.guess(
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lc,
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FConverter.transformToInts(geom, viewPort.getAffineTransform()),
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getPlacementConstraints(),
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0,
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cancel);
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if (lookupAndPlaceLabel(new BufferedImage[] {targetBi}, targetG,
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llm, placement, lc, geom, viewPort, cancel,
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bLabelsReallocatable)) {
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placedCount++;
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} else {
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notPlacedCount++;
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}
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if (bLabelsReallocatable) {
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mapGraphics.drawImage(bi, null, null);
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}
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}
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}*/
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int total = placedCount+notPlacedCount;
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logger.info("Labeled layer '"+layer.getName()+"' "+(System.currentTimeMillis()-t1)/1000D+" seconds. "+placedCount+"/"+total+" labels placed ("+NumberFormat.getInstance().format(100*placedCount/(double) total)+"%)"); |
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} |
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private boolean lookupAndPlaceLabel(BufferedImage[] bis, Graphics2D g, ArrayList<LabelLocationMetrics> llm, ILabelPlacement placement, LabelClass lc, IGeometry geom, ViewPort viewPort, Cancellable cancel, boolean bLabelsReallocatable) { |
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int i;
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for (i = 0; !cancel.isCanceled() && i < llm.size(); i++) { |
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LabelLocationMetrics labelMetrics = llm.get(i); |
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if (bLabelsReallocatable) {
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for (int j = 0; j < bis.length; j++) { |
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BufferedImage bi = bis[j];
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if (!isOverlapping(bi, lc.getShape(labelMetrics))) {
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lc.draw(g, labelMetrics); |
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return true; |
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} |
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} |
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} else {
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lc.draw(g, labelMetrics); |
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return true; |
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} |
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} |
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return false; |
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} |
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private boolean setupLabel(IFeature feat, LabelClass lc, Cancellable cancel, String[] usedFields, ViewPort viewPort, double dpi) { |
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if (true) { |
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Value[] vv = feat.getAttributes();
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String expr = lc.getLabelExpression();
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LabelExpressionParser parser = new LabelExpressionParser(
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new CharArrayReader(expr.toCharArray())); |
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for (int i = 0; !cancel.isCanceled() && i < usedFields.length; i++) { |
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parser.putSymbol( |
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Symbol.createVariableSymbolFromValue(usedFields[i], vv[i])); |
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} |
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String[] texts; |
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try {
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texts = parser.LabelExpression(); |
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lc.setTexts(texts); |
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} catch (ParseException e) { |
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e.printStackTrace(); |
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return false; |
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} |
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} else {
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lc.setTexts(new String[0]); |
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} |
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lc.toCartographicSize(viewPort, dpi, null);
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return true; |
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} |
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private boolean isOverlapping(BufferedImage bi, FShape labelShape) { |
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Rectangle2D rPixels = labelShape.getBounds2D();
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for (int i= (int) rPixels.getX(); i<rPixels.getMaxX(); i++){ |
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for (int j= (int) rPixels.getY(); j<rPixels.getMaxY(); j++){ |
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if (!labelShape.contains(i, j)) {
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continue;
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} |
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if (i<0 || j<0) { |
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continue;
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} |
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if (bi.getWidth()<i+1 || bi.getHeight()<j+1) { |
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continue;
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} |
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if (bi.getRGB(i,j)!=0){ |
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// Graphics2D g = bi.createGraphics();
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// g.setColor(Color.RED);
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// g.draw(labelShape);
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return true; |
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} |
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} |
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} |
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// Graphics2D g = bi.createGraphics();
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// g.setColor(Color.GREEN);
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// g.draw(labelShape);
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return false; |
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} |
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private boolean isOnePoint(ViewPort viewPort, IGeometry geom) { |
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boolean onePoint = false; |
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int shapeType = geom.getGeometryType();
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if (shapeType!=FShape.POINT && shapeType!=FShape.MULTIPOINT) {
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Rectangle2D geomBounds = geom.getBounds2D();
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ICoordTrans ct = layer.getCoordTrans(); |
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if (ct!=null) { |
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geomBounds = ct.convert(geomBounds); |
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} |
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double dist1Pixel = viewPort.getDist1pixel();
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onePoint = (geomBounds.getWidth() <= dist1Pixel |
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&& geomBounds.getHeight() <= dist1Pixel); |
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} |
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return onePoint;
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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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public XMLEntity getXMLEntity() {
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XMLEntity xml = new XMLEntity();
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xml.putProperty("className", getClassName());
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if (method!=null) { |
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XMLEntity methodEntity = method.getXMLEntity(); |
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methodEntity.putProperty("id", "LabelingMethod"); |
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xml.addChild(methodEntity); |
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} |
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if (placementConstraints != null) { |
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XMLEntity pcEntity = placementConstraints.getXMLEntity(); |
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pcEntity.putProperty("id", "PlacementConstraints"); |
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xml.addChild(pcEntity); |
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} |
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if (zoomConstraints != null) { |
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XMLEntity zcEntity = zoomConstraints.getXMLEntity(); |
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zcEntity.putProperty("id", "ZoomConstraints"); |
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xml.addChild(zcEntity); |
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} |
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return xml;
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} |
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|
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public void setXMLEntity(XMLEntity xml) { |
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XMLEntity aux = xml.firstChild("id", "LabelingMethod"); |
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if (aux != null) { |
| 472 |
method = LabelingFactory.createMethodFromXML(aux); |
| 473 |
} |
| 474 |
|
| 475 |
aux = xml.firstChild("id", "PlacementConstraints"); |
| 476 |
if (aux != null) { |
| 477 |
placementConstraints = LabelingFactory.createPlacementConstraintsFromXML(aux); |
| 478 |
} |
| 479 |
|
| 480 |
aux = xml.firstChild("id", "ZoomConstraints"); |
| 481 |
if (aux != null) { |
| 482 |
zoomConstraints = LabelingFactory.createZoomConstraintsFromXML(aux); |
| 483 |
} |
| 484 |
} |
| 485 |
|
| 486 |
public IPlacementConstraints getPlacementConstraints() {
|
| 487 |
return placementConstraints;
|
| 488 |
} |
| 489 |
|
| 490 |
public void setPlacementConstraints(IPlacementConstraints constraints) { |
| 491 |
this.placementConstraints = constraints;
|
| 492 |
} |
| 493 |
|
| 494 |
public IZoomConstraints getZoomConstraints() {
|
| 495 |
return zoomConstraints;
|
| 496 |
} |
| 497 |
|
| 498 |
public void setZoomConstraints(IZoomConstraints constraints) { |
| 499 |
this.zoomConstraints = constraints;
|
| 500 |
} |
| 501 |
|
| 502 |
public void print(Graphics2D g, ViewPort viewPort, Cancellable cancel, PrintRequestAttributeSet properties) throws ReadDriverException { |
| 503 |
|
| 504 |
} |
| 505 |
|
| 506 |
public String[] getUsedFields() { |
| 507 |
LabelClass[] lcs = method.getLabelClasses();
|
| 508 |
ArrayList<String> fieldNames = new ArrayList<String>(); |
| 509 |
for (int i = 0; i < lcs.length; i++) { |
| 510 |
String expr = lcs[i].getLabelExpression();
|
| 511 |
int start;
|
| 512 |
while ((start = expr.indexOf("[")) != -1) { |
| 513 |
int end = expr.indexOf("]"); |
| 514 |
String field = expr.substring(start+1, end).trim(); |
| 515 |
if (!fieldNames.contains(field))
|
| 516 |
fieldNames.add(field); |
| 517 |
expr = expr.substring(end+1, expr.length());
|
| 518 |
} |
| 519 |
|
| 520 |
} |
| 521 |
return fieldNames.toArray(new String[fieldNames.size()]); |
| 522 |
} |
| 523 |
|
| 524 |
} |