root / branches / v2_0_0_prep / libraries / libFMap_controls / src / org / gvsig / fmap / mapcontrol / tools / PanListenerImpl.java @ 38564
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1 | 21203 | vcaballero | /* 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 | package org.gvsig.fmap.mapcontrol.tools; |
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42 | |||
43 | import java.awt.Image; |
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44 | import java.awt.geom.Point2D; |
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45 | import java.awt.geom.Rectangle2D; |
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46 | |||
47 | 38564 | jjdelcerro | import org.gvsig.fmap.IconThemeHelper; |
48 | import org.gvsig.fmap.geom.Geometry.SUBTYPES; |
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49 | 27411 | jpiera | import org.gvsig.fmap.geom.GeometryLocator; |
50 | import org.gvsig.fmap.geom.GeometryManager; |
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51 | import org.gvsig.fmap.geom.exception.CreateEnvelopeException; |
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52 | 21500 | vcaballero | import org.gvsig.fmap.geom.primitive.Envelope; |
53 | 21203 | vcaballero | import org.gvsig.fmap.mapcontext.ViewPort; |
54 | import org.gvsig.fmap.mapcontrol.MapControl; |
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55 | import org.gvsig.fmap.mapcontrol.tools.Events.MoveEvent; |
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56 | import org.gvsig.fmap.mapcontrol.tools.Listeners.PanListener; |
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57 | 27411 | jpiera | import org.slf4j.Logger; |
58 | import org.slf4j.LoggerFactory; |
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59 | 21203 | vcaballero | |
60 | |||
61 | |||
62 | /**
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63 | * <p>Listener for moving the extent of the associated {@link MapControl MapControl} object
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64 | * according the movement between the initial and final points of line determined by the movement
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65 | * dragging with the third button of the mouse.</p>
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66 | 21500 | vcaballero | *
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67 | 21203 | vcaballero | * <p>Updates the extent of its <code>ViewPort</code> with the new position.</p>
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68 | *
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69 | * @author Vicente Caballero Navarro
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70 | */
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71 | public class PanListenerImpl implements PanListener { |
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72 | 27411 | jpiera | private static final GeometryManager geomManager = GeometryLocator.getGeometryManager(); |
73 | private static final Logger logger = LoggerFactory.getLogger(PanListenerImpl.class); |
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74 | 21203 | vcaballero | /**
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75 | * The image to display when the cursor is active.
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76 | */
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77 | 38564 | jjdelcerro | // private final Image ipan = PluginServices.getIconTheme().get("cursor-pan").getImage();
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78 | 36684 | jpiera | |
79 | 21203 | vcaballero | /**
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80 | * Reference to the <code>MapControl</code> object that uses.
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81 | */
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82 | private MapControl mapControl;
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83 | |||
84 | /**
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85 | * <p>Creates a new listener for changing the position of the extent of the associated {@link MapControl MapControl} object.</p>
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86 | 21500 | vcaballero | *
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87 | 21203 | vcaballero | * @param mapControl the <code>MapControl</code> where will be applied the changes
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88 | */
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89 | public PanListenerImpl(MapControl mapControl) {
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90 | this.mapControl = mapControl;
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91 | } |
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92 | |||
93 | /*
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94 | * (non-Javadoc)
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95 | * @see com.iver.cit.gvsig.fmap.tools.Listeners.PanListener#move(com.iver.cit.gvsig.fmap.tools.Events.MoveEvent)
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96 | */
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97 | public void move(MoveEvent event) { |
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98 | ViewPort vp = mapControl.getMapContext().getViewPort(); |
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99 | |||
100 | Point2D from = vp.toMapPoint(event.getFrom());
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101 | Point2D to = vp.toMapPoint(event.getTo());
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102 | |||
103 | 21500 | vcaballero | |
104 | 21203 | vcaballero | Rectangle2D extent = vp.getExtent();
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105 | 21500 | vcaballero | double x = extent.getX() - (to.getX() - from.getX());
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106 | double y = extent.getY() - (to.getY() - from.getY());
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107 | double width = extent.getWidth();
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108 | double height = extent.getHeight();
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109 | 27411 | jpiera | Envelope r; |
110 | try {
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111 | r = geomManager.createEnvelope(x, y, x+width, y+height, SUBTYPES.GEOM2D); |
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112 | vp.setEnvelope(r); |
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113 | } catch (CreateEnvelopeException e) {
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114 | logger.error("Error creating the envelope", e);
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115 | } |
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116 | |||
117 | 21203 | vcaballero | } |
118 | |||
119 | /*
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120 | * (non-Javadoc)
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121 | * @see com.iver.cit.gvsig.fmap.tools.Listeners.ToolListener#getCursor()
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122 | */
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123 | 23645 | vcaballero | public Image getImageCursor() { |
124 | 38564 | jjdelcerro | return IconThemeHelper.getImage("cursor-pan"); |
125 | 21203 | vcaballero | } |
126 | |||
127 | /*
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128 | * (non-Javadoc)
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129 | * @see com.iver.cit.gvsig.fmap.tools.Listeners.ToolListener#cancelDrawing()
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130 | */
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131 | public boolean cancelDrawing() { |
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132 | return true; |
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133 | } |
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134 | } |