svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.plugin / org.gvsig.labeling.app / org.gvsig.labeling.app.mainplugin / src / main / java / org / gvsig / labeling / placements / MarkerPlacementAroundPoint.java @ 40911
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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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package org.gvsig.labeling.placements; |
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import java.awt.Rectangle; |
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import java.awt.geom.NoninvertibleTransformException; |
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import java.util.ArrayList; |
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import org.gvsig.fmap.geom.Geometry; |
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import org.gvsig.fmap.geom.Geometry.TYPES; |
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import org.gvsig.fmap.geom.primitive.Point; |
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import org.gvsig.fmap.mapcontext.ViewPort; |
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import org.gvsig.fmap.mapcontext.rendering.legend.styling.ILabelClass; |
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import org.gvsig.fmap.mapcontext.rendering.legend.styling.IPlacementConstraints; |
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import org.gvsig.symbology.fmap.mapcontext.rendering.legend.styling.LabelLocationMetrics; |
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import org.gvsig.tools.task.Cancellable; |
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import org.slf4j.Logger; |
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import org.slf4j.LoggerFactory; |
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public class MarkerPlacementAroundPoint implements ILabelPlacement { |
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private static Logger logger = |
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LoggerFactory.getLogger(MarkerPlacementAroundPoint.class); |
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private static final MarkerPlacementOnPoint pos = new MarkerPlacementOnPoint(); |
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public ArrayList<LabelLocationMetrics> guess( |
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ILabelClass lc, |
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Geometry geom, |
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IPlacementConstraints placementConstraints, |
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double cartographicSymbolSize, Cancellable cancel, ViewPort vp) {
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if (cancel.isCanceled()) return CannotPlaceLabel.NO_PLACES; |
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Geometry shp = geom.cloneGeometry(); |
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shp.transform(vp.getAffineTransform()); |
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if (placementConstraints instanceof PointPlacementConstraints) { |
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PointPlacementConstraints ppc = (PointPlacementConstraints) placementConstraints; |
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PointLabelPositioner plp = ppc.getPositioner(); |
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if (plp != null) { |
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Point po = null; |
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try {
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po = shp.centroid(); |
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} catch (Exception exc) { |
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logger.error("While getting centroid.", exc);
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} |
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int[] preferredPositions = plp.getPreferenceVector(); |
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ArrayList<LabelLocationMetrics> highPreference = new ArrayList<LabelLocationMetrics>(); |
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ArrayList<LabelLocationMetrics> normalPreference = new ArrayList<LabelLocationMetrics>(); |
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ArrayList<LabelLocationMetrics> lowPreference = new ArrayList<LabelLocationMetrics>(); |
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Rectangle bounds = lc.getBounds();
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double width = bounds.getWidth()*.5; // + 2; //?por qu? el +2? |
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double heigth = bounds.getHeight()*.5; |
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double offsetX = 0, offsetY = 0; |
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for (int i = 0; i < preferredPositions.length; i++) { |
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switch (i) {
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case 0: |
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case 3: |
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case 5: |
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// left
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offsetX = -width; |
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break;
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case 2: |
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case 4: |
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case 7: |
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// rigth
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offsetX = width; |
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break;
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case 1: |
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case 6: |
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default:
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// horizontally centered
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offsetX = 0;
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break;
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} |
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switch (i) {
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case 0: |
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case 1: |
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case 2: |
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// top
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offsetY = -heigth; |
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break;
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case 5: |
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case 6: |
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case 7: |
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// below
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offsetY = heigth; |
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break;
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case 3: |
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case 4: |
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default:
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// vertically centered
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offsetY = 0;
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break;
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} |
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// // xOffset
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// switch (i % 3) {
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// case 0:
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// // left
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// offsetX = -width;
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// break;
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// case 2:
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// // rigth
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// offsetX = width;
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// break;
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// case 1:
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// default:
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// // horizontally centered
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// offsetX = 0;
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// break;
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//
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// }
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//
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// switch (i / 3) {
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// case 0:
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// // top
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// offsetY = -heigth;
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// break;
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// case 2:
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// // below
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// offsetY = heigth;
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// break;
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// case 1:
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// default:
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// // vertically centered
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// offsetY = 0;
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// break;
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//
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// }
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po.setX(po.getX() + offsetX); |
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po.setY(po.getY() + offsetY); |
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try {
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po.transform(vp.getAffineTransform().createInverse()); |
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} catch (NoninvertibleTransformException e) { |
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logger.error("uninvertible matrix.", e);
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} |
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switch (preferredPositions[i]) {
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case PointLabelPositioner.FORBIDDEN:
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break;
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case PointLabelPositioner.PREFERENCE_HIGH:
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highPreference.addAll( |
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pos.guess(lc, po, placementConstraints, cartographicSymbolSize, cancel,vp)); |
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break;
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case PointLabelPositioner.PREFERENCE_NORMAL:
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normalPreference.addAll( |
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pos.guess(lc, po, placementConstraints, cartographicSymbolSize, cancel,vp)); |
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break;
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case PointLabelPositioner.PREFERENCE_LOW:
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lowPreference.addAll( |
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pos.guess(lc, po, placementConstraints, cartographicSymbolSize, cancel,vp)); |
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break;
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default:
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throw new Error("unrecognised label position preference value: "+preferredPositions[i]); |
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} |
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} |
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ArrayList<LabelLocationMetrics> guessed = new ArrayList<LabelLocationMetrics>(); |
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for (int j = 0; j < highPreference.size(); j++) guessed.add(highPreference.get(j)); |
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for (int j = 0; j < normalPreference.size(); j++) guessed.add(normalPreference.get(j)); |
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for (int j = 0; j < lowPreference.size(); j++) guessed.add(lowPreference.get(j)); |
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return guessed;
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} |
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} |
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return CannotPlaceLabel.NO_PLACES;
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} |
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public boolean isSuitableFor(IPlacementConstraints placementConstraints, |
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int shapeType) {
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if (shapeType == TYPES.POINT
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|| shapeType == TYPES.MULTIPOINT) {
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// TODO (09/01/08) is this correct? if not fix it also in PlacementManager, PlacementProperties
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return placementConstraints.isAroundThePoint();
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} else {
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return false; |
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} |
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} |
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} |