svn-gvsig-desktop / tags / v1_0_2_Build_905 / libraries / libFMap / src / com / iver / cit / gvsig / fmap / operations / strategies / SelectedZoomVisitor.java @ 10767
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1 | 1100 | fjp | /* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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2 | *
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3 | * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.
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4 | *
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5 | * This program is free software; you can redistribute it and/or
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6 | * modify it under the terms of the GNU General Public License
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7 | * as published by the Free Software Foundation; either version 2
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8 | * of the License, or (at your option) any later version.
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9 | *
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10 | * This program is distributed in the hope that it will be useful,
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11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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13 | * GNU General Public License for more details.
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14 | *
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15 | * You should have received a copy of the GNU General Public License
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16 | * along with this program; if not, write to the Free Software
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17 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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18 | *
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19 | * For more information, contact:
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20 | *
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21 | * Generalitat Valenciana
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22 | * Conselleria d'Infraestructures i Transport
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23 | * Av. Blasco Ib??ez, 50
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24 | * 46010 VALENCIA
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25 | * SPAIN
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26 | *
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27 | * +34 963862235
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28 | * gvsig@gva.es
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29 | * www.gvsig.gva.es
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30 | *
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31 | * or
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32 | *
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33 | * IVER T.I. S.A
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34 | * Salamanca 50
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35 | * 46005 Valencia
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36 | * Spain
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37 | *
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38 | * +34 963163400
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39 | * dac@iver.es
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40 | */
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41 | 1085 | vcaballero | package com.iver.cit.gvsig.fmap.operations.strategies; |
42 | |||
43 | 5317 | fjp | import java.awt.geom.Rectangle2D; |
44 | |||
45 | 4256 | caballero | import com.iver.cit.gvsig.fmap.DriverException; |
46 | 1085 | vcaballero | import com.iver.cit.gvsig.fmap.core.IGeometry; |
47 | import com.iver.cit.gvsig.fmap.layers.FBitSet; |
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48 | import com.iver.cit.gvsig.fmap.layers.FLayer; |
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49 | 4256 | caballero | import com.iver.cit.gvsig.fmap.layers.layerOperations.AlphanumericData; |
50 | 1085 | vcaballero | |
51 | |||
52 | /**
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53 | * Visitor de zoom a lo seleccionado.
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54 | *
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55 | * @author Vicente Caballero Navarro
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56 | */
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57 | public class SelectedZoomVisitor implements FeatureVisitor { |
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58 | private Rectangle2D rectangle = null; |
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59 | private FBitSet bitset = null; |
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60 | |||
61 | /**
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62 | * Inicializa el visitor.
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63 | *
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64 | * @param layer Capa.
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65 | *
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66 | * @return True si se inicializa correctamente.
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67 | */
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68 | public boolean start(FLayer layer) { |
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69 | 4256 | caballero | if (layer instanceof AlphanumericData) {//TODO Esta comprobaci?n se hacia con Selectable |
70 | try {
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71 | bitset = ((AlphanumericData) layer).getRecordset().getSelection(); |
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72 | } catch (DriverException e) {
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73 | e.printStackTrace(); |
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74 | } |
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75 | 1085 | vcaballero | |
76 | return true; |
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77 | } |
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78 | |||
79 | return false; |
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80 | } |
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81 | |||
82 | /**
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83 | * Finaliza el visitor.
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84 | *
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85 | * @param layer Capa.
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86 | */
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87 | public void stop(FLayer layer) { |
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88 | } |
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89 | |||
90 | /**
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91 | * @see com.iver.cit.gvsig.fmap.operations.strategies.FeatureVisitor#visit(com.iver.cit.gvsig.fmap.core.IGeometry,
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92 | * int)
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93 | */
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94 | public void visit(IGeometry g, int index) throws VisitException { |
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95 | if (bitset.get(index)) {
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96 | if (rectangle == null) { |
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97 | rectangle = (Rectangle2D) g.getBounds2D().clone();
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98 | } else {
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99 | rectangle.add(g.getBounds2D()); |
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100 | } |
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101 | } |
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102 | } |
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103 | |||
104 | /**
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105 | * Devuelve el Extent de los shapes seleccionados, y si no hay ning?n shape
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106 | * seleccionado devuelve null.
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107 | *
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108 | * @return Extent de los shapes seleccionados.
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109 | */
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110 | public Rectangle2D getSelectBound() { |
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111 | return rectangle;
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112 | } |
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113 | 4311 | azabala | |
114 | public String getProcessDescription() { |
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115 | return "Defining rectangle to zoom from selected geometries"; |
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116 | } |
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117 | 1085 | vcaballero | } |