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 @ 43510
History | View | Annotate | Download (6.69 KB)
| 1 |
/**
|
|---|---|
| 2 |
* gvSIG. Desktop Geographic Information System.
|
| 3 |
*
|
| 4 |
* Copyright (C) 2007-2013 gvSIG Association.
|
| 5 |
*
|
| 6 |
* This program is free software; you can redistribute it and/or
|
| 7 |
* modify it under the terms of the GNU General Public License
|
| 8 |
* as published by the Free Software Foundation; either version 3
|
| 9 |
* of the License, or (at your option) any later version.
|
| 10 |
*
|
| 11 |
* This program is distributed in the hope that it will be useful,
|
| 12 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
| 13 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
| 14 |
* GNU General Public License for more details.
|
| 15 |
*
|
| 16 |
* You should have received a copy of the GNU General Public License
|
| 17 |
* along with this program; if not, write to the Free Software
|
| 18 |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
|
| 19 |
* MA 02110-1301, USA.
|
| 20 |
*
|
| 21 |
* For any additional information, do not hesitate to contact us
|
| 22 |
* at info AT gvsig.com, or visit our website www.gvsig.com.
|
| 23 |
*/
|
| 24 |
package org.gvsig.labeling.placements; |
| 25 |
|
| 26 |
import java.awt.Rectangle; |
| 27 |
import java.awt.geom.NoninvertibleTransformException; |
| 28 |
import java.util.ArrayList; |
| 29 |
|
| 30 |
import org.gvsig.fmap.geom.Geometry; |
| 31 |
import org.gvsig.fmap.geom.Geometry.TYPES; |
| 32 |
import org.gvsig.fmap.geom.GeometryLocator; |
| 33 |
import org.gvsig.fmap.geom.GeometryManager; |
| 34 |
import org.gvsig.fmap.geom.primitive.Point; |
| 35 |
import org.gvsig.fmap.mapcontext.ViewPort; |
| 36 |
import org.gvsig.fmap.mapcontext.rendering.legend.styling.ILabelClass; |
| 37 |
import org.gvsig.fmap.mapcontext.rendering.legend.styling.IPlacementConstraints; |
| 38 |
import org.gvsig.symbology.fmap.mapcontext.rendering.legend.styling.LabelLocationMetrics; |
| 39 |
import org.gvsig.tools.task.Cancellable; |
| 40 |
import org.slf4j.Logger; |
| 41 |
import org.slf4j.LoggerFactory; |
| 42 |
|
| 43 |
public class MarkerPlacementAroundPoint implements ILabelPlacement { |
| 44 |
|
| 45 |
private static Logger logger = |
| 46 |
LoggerFactory.getLogger(MarkerPlacementAroundPoint.class); |
| 47 |
private static final MarkerPlacementOnPoint pos = new MarkerPlacementOnPoint(); |
| 48 |
|
| 49 |
@Override
|
| 50 |
public ArrayList<LabelLocationMetrics> guess( |
| 51 |
ILabelClass lc, |
| 52 |
Geometry geom, |
| 53 |
IPlacementConstraints placementConstraints, |
| 54 |
double cartographicSymbolSize, Cancellable cancel, ViewPort vp) {
|
| 55 |
|
| 56 |
if (cancel.isCanceled()) {
|
| 57 |
return CannotPlaceLabel.NO_PLACES;
|
| 58 |
} |
| 59 |
|
| 60 |
Geometry shp = geom.cloneGeometry(); |
| 61 |
shp.transform(vp.getAffineTransform()); |
| 62 |
|
| 63 |
if (placementConstraints instanceof PointPlacementConstraints) { |
| 64 |
PointPlacementConstraints ppc = (PointPlacementConstraints) placementConstraints; |
| 65 |
PointLabelPositioner plp = ppc.getPositioner(); |
| 66 |
|
| 67 |
if (plp != null) { |
| 68 |
Point po_screen = null; |
| 69 |
try {
|
| 70 |
po_screen = shp.centroid(); |
| 71 |
} catch (Exception exc) { |
| 72 |
logger.error("While getting centroid.", exc);
|
| 73 |
} |
| 74 |
|
| 75 |
int[] preferredPositions = plp.getPreferenceVector(); |
| 76 |
ArrayList<LabelLocationMetrics> highPreference = new ArrayList<LabelLocationMetrics>(); |
| 77 |
ArrayList<LabelLocationMetrics> normalPreference = new ArrayList<LabelLocationMetrics>(); |
| 78 |
ArrayList<LabelLocationMetrics> lowPreference = new ArrayList<LabelLocationMetrics>(); |
| 79 |
Rectangle bounds = lc.getBounds();
|
| 80 |
double width = bounds.getWidth()*.5; // + 2; //?por qu? el +2? |
| 81 |
double heigth = bounds.getHeight()*.5; |
| 82 |
|
| 83 |
double offsetX = 0, offsetY = 0; |
| 84 |
for (int i = 0; i < preferredPositions.length; i++) { |
| 85 |
|
| 86 |
Point po_aux = (Point) po_screen.cloneGeometry(); |
| 87 |
switch (i) {
|
| 88 |
case 0: |
| 89 |
case 3: |
| 90 |
case 5: |
| 91 |
// left
|
| 92 |
offsetX = -width; |
| 93 |
break;
|
| 94 |
case 2: |
| 95 |
case 4: |
| 96 |
case 7: |
| 97 |
// rigth
|
| 98 |
offsetX = width; |
| 99 |
break;
|
| 100 |
case 1: |
| 101 |
case 6: |
| 102 |
default:
|
| 103 |
// horizontally centered
|
| 104 |
offsetX = 0;
|
| 105 |
break;
|
| 106 |
} |
| 107 |
switch (i) {
|
| 108 |
case 0: |
| 109 |
case 1: |
| 110 |
case 2: |
| 111 |
// top
|
| 112 |
offsetY = -heigth; |
| 113 |
break;
|
| 114 |
case 5: |
| 115 |
case 6: |
| 116 |
case 7: |
| 117 |
// below
|
| 118 |
offsetY = heigth; |
| 119 |
break;
|
| 120 |
case 3: |
| 121 |
case 4: |
| 122 |
default:
|
| 123 |
// vertically centered
|
| 124 |
offsetY = 0;
|
| 125 |
break;
|
| 126 |
|
| 127 |
} |
| 128 |
// // xOffset
|
| 129 |
// switch (i % 3) {
|
| 130 |
// case 0:
|
| 131 |
// // left
|
| 132 |
// offsetX = -width;
|
| 133 |
// break;
|
| 134 |
// case 2:
|
| 135 |
// // rigth
|
| 136 |
// offsetX = width;
|
| 137 |
// break;
|
| 138 |
// case 1:
|
| 139 |
// default:
|
| 140 |
// // horizontally centered
|
| 141 |
// offsetX = 0;
|
| 142 |
// break;
|
| 143 |
//
|
| 144 |
// }
|
| 145 |
//
|
| 146 |
// switch (i / 3) {
|
| 147 |
// case 0:
|
| 148 |
// // top
|
| 149 |
// offsetY = -heigth;
|
| 150 |
// break;
|
| 151 |
// case 2:
|
| 152 |
// // below
|
| 153 |
// offsetY = heigth;
|
| 154 |
// break;
|
| 155 |
// case 1:
|
| 156 |
// default:
|
| 157 |
// // vertically centered
|
| 158 |
// offsetY = 0;
|
| 159 |
// break;
|
| 160 |
//
|
| 161 |
// }
|
| 162 |
|
| 163 |
po_aux.setX(po_aux.getX() + offsetX); |
| 164 |
po_aux.setY(po_aux.getY() + offsetY); |
| 165 |
try {
|
| 166 |
/*
|
| 167 |
* Back to map coordinates
|
| 168 |
*/
|
| 169 |
po_aux.transform(vp.getAffineTransform().createInverse()); |
| 170 |
} catch (NoninvertibleTransformException e) { |
| 171 |
logger.error("uninvertible matrix.", e);
|
| 172 |
} |
| 173 |
|
| 174 |
switch (preferredPositions[i]) {
|
| 175 |
case PointLabelPositioner.FORBIDDEN:
|
| 176 |
break;
|
| 177 |
case PointLabelPositioner.PREFERENCE_HIGH:
|
| 178 |
highPreference.addAll( |
| 179 |
pos.guess(lc, po_aux, placementConstraints, cartographicSymbolSize, cancel,vp)); |
| 180 |
break;
|
| 181 |
case PointLabelPositioner.PREFERENCE_NORMAL:
|
| 182 |
|
| 183 |
normalPreference.addAll( |
| 184 |
pos.guess(lc, po_aux, placementConstraints, cartographicSymbolSize, cancel,vp)); |
| 185 |
break;
|
| 186 |
case PointLabelPositioner.PREFERENCE_LOW:
|
| 187 |
lowPreference.addAll( |
| 188 |
pos.guess(lc, po_aux, placementConstraints, cartographicSymbolSize, cancel,vp)); |
| 189 |
break;
|
| 190 |
|
| 191 |
default:
|
| 192 |
throw new Error("unrecognised label position preference value: "+preferredPositions[i]); |
| 193 |
} |
| 194 |
} |
| 195 |
|
| 196 |
ArrayList<LabelLocationMetrics> guessed = new ArrayList<LabelLocationMetrics>(); |
| 197 |
for (int j = 0; j < highPreference.size(); j++) guessed.add(highPreference.get(j)); |
| 198 |
for (int j = 0; j < normalPreference.size(); j++) guessed.add(normalPreference.get(j)); |
| 199 |
for (int j = 0; j < lowPreference.size(); j++) guessed.add(lowPreference.get(j)); |
| 200 |
return guessed;
|
| 201 |
} |
| 202 |
} |
| 203 |
|
| 204 |
return CannotPlaceLabel.NO_PLACES;
|
| 205 |
} |
| 206 |
|
| 207 |
|
| 208 |
|
| 209 |
@Override
|
| 210 |
public boolean isSuitableFor(IPlacementConstraints placementConstraints, |
| 211 |
int shapeType) {
|
| 212 |
|
| 213 |
GeometryManager geomManager = GeometryLocator.getGeometryManager(); |
| 214 |
if( geomManager.isSubtype(TYPES.POINT, shapeType) ||
|
| 215 |
geomManager.isSubtype(TYPES.MULTIPOINT, shapeType) ) {
|
| 216 |
// TODO (09/01/08) is this correct? if not fix it also in PlacementManager, PlacementProperties
|
| 217 |
return placementConstraints != null && placementConstraints.isAroundThePoint(); |
| 218 |
} else {
|
| 219 |
return false; |
| 220 |
} |
| 221 |
|
| 222 |
} |
| 223 |
|
| 224 |
|
| 225 |
|
| 226 |
} |