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 / PolygonPlacementOnCentroid.java @ 43510
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| 1 | 43510 | jjdelcerro | /**
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| 2 | * gvSIG. Desktop Geographic Information System.
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| 3 | 40911 | jldominguez | *
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| 4 | 43510 | jjdelcerro | * Copyright (C) 2007-2013 gvSIG Association.
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| 5 | 40911 | jldominguez | *
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| 6 | * This program is free software; you can redistribute it and/or
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| 7 | * modify it under the terms of the GNU General Public License
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| 8 | 43510 | jjdelcerro | * as published by the Free Software Foundation; either version 3
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| 9 | 40911 | jldominguez | * of the License, or (at your option) any later version.
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| 10 | *
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| 11 | * This program is distributed in the hope that it will be useful,
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| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 14 | * GNU General Public License for more details.
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| 15 | *
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| 16 | * You should have received a copy of the GNU General Public License
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| 17 | * along with this program; if not, write to the Free Software
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| 18 | 43510 | jjdelcerro | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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| 19 | * MA 02110-1301, USA.
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| 20 | 40911 | jldominguez | *
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| 21 | 43510 | jjdelcerro | * For any additional information, do not hesitate to contact us
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| 22 | * at info AT gvsig.com, or visit our website www.gvsig.com.
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| 23 | 40911 | jldominguez | */
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| 24 | package org.gvsig.labeling.placements; |
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| 25 | |||
| 26 | import java.awt.geom.Point2D; |
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| 27 | import java.awt.geom.Rectangle2D; |
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| 28 | import java.util.ArrayList; |
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| 29 | |||
| 30 | import org.gvsig.fmap.geom.Geometry; |
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| 31 | import org.gvsig.fmap.geom.Geometry.TYPES; |
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| 32 | import org.gvsig.fmap.geom.GeometryLocator; |
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| 33 | 43510 | jjdelcerro | import org.gvsig.fmap.geom.GeometryManager; |
| 34 | 40911 | jldominguez | import org.gvsig.fmap.geom.primitive.Point; |
| 35 | import org.gvsig.fmap.mapcontext.ViewPort; |
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| 36 | import org.gvsig.fmap.mapcontext.rendering.legend.styling.ILabelClass; |
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| 37 | import org.gvsig.fmap.mapcontext.rendering.legend.styling.IPlacementConstraints; |
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| 38 | import org.gvsig.symbology.fmap.mapcontext.rendering.legend.styling.LabelLocationMetrics; |
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| 39 | import org.gvsig.tools.task.Cancellable; |
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| 40 | import org.slf4j.Logger; |
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| 41 | import org.slf4j.LoggerFactory; |
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| 42 | |||
| 43 | public class PolygonPlacementOnCentroid extends MarkerPlacementOnPoint |
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| 44 | implements ILabelPlacement {
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| 45 | |||
| 46 | private static final Logger logger = LoggerFactory.getLogger( |
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| 47 | PolygonPlacementOnCentroid.class); |
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| 48 | |||
| 49 | 43510 | jjdelcerro | @Override
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| 50 | 40911 | jldominguez | public ArrayList<LabelLocationMetrics> guess( |
| 51 | ILabelClass lc, Geometry geom, |
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| 52 | IPlacementConstraints placementConstraints, |
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| 53 | double cartographicSymbolSize, Cancellable cancel, ViewPort vp) {
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| 54 | |||
| 55 | 43510 | jjdelcerro | if (cancel.isCanceled()) {
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| 56 | return CannotPlaceLabel.NO_PLACES;
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| 57 | } |
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| 58 | 40911 | jldominguez | |
| 59 | Point cen = null; |
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| 60 | try {
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| 61 | cen = geom.centroid(); |
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| 62 | } catch (Exception e) { |
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| 63 | 43510 | jjdelcerro | logger.warn("Can't get centroid of geometry.", e);
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| 64 | 40911 | jldominguez | } |
| 65 | return super.guess( |
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| 66 | lc, |
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| 67 | cen, |
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| 68 | placementConstraints, |
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| 69 | cartographicSymbolSize, cancel,vp); |
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| 70 | } |
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| 71 | |||
| 72 | 43510 | jjdelcerro | @Override
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| 73 | 40911 | jldominguez | public ArrayList<LabelLocationMetrics> guess( |
| 74 | ILabelClass lc, Geometry geom, |
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| 75 | IPlacementConstraints placementConstraints, |
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| 76 | double cartographicSymbolSize, Cancellable cancel) {
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| 77 | |||
| 78 | 43510 | jjdelcerro | if (cancel.isCanceled()) {
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| 79 | return CannotPlaceLabel.NO_PLACES;
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| 80 | } |
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| 81 | 40911 | jldominguez | |
| 82 | ArrayList<LabelLocationMetrics> guessed =
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| 83 | new ArrayList<LabelLocationMetrics>(); |
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| 84 | |||
| 85 | Point cen = null; |
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| 86 | try {
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| 87 | cen = geom.centroid(); |
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| 88 | } catch (Exception e) { |
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| 89 | 43510 | jjdelcerro | logger.warn("While getting centroid.", e);
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| 90 | 40911 | jldominguez | } |
| 91 | Point2D p = new Point2D.Double(cen.getX(), cen.getY()); |
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| 92 | Rectangle2D bounds = lc.getBounds();
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| 93 | p.setLocation( |
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| 94 | p.getX() - (bounds.getWidth()*0.5),
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| 95 | p.getY() - (bounds.getHeight()*0.5));// - 2); |
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| 96 | guessed.add(new LabelLocationMetrics(p, 0, true)); |
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| 97 | return guessed;
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| 98 | } |
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| 99 | |||
| 100 | 43510 | jjdelcerro | @Override
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| 101 | 40911 | jldominguez | public boolean isSuitableFor( |
| 102 | IPlacementConstraints placementConstraints, |
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| 103 | int shapeType) {
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| 104 | |||
| 105 | 43510 | jjdelcerro | GeometryManager geomManager = GeometryLocator.getGeometryManager(); |
| 106 | if( geomManager.isSubtype(TYPES.SURFACE, shapeType) ||
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| 107 | geomManager.isSubtype(TYPES.MULTISURFACE, shapeType) ) {
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| 108 | return placementConstraints != null && |
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| 109 | (placementConstraints.isHorizontal() && |
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| 110 | 40911 | jldominguez | !placementConstraints.isFitInsidePolygon()); |
| 111 | } |
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| 112 | return false; |
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| 113 | } |
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| 114 | |||
| 115 | } |