Revision 20100 branches/v10/libraries/libFMap/src/com/iver/cit/gvsig/fmap/tools/ZoomOutListenerImpl.java
| ZoomOutListenerImpl.java | ||
|---|---|---|
| 57 | 57 |
|
| 58 | 58 |
|
| 59 | 59 |
/** |
| 60 |
* Implementaci?n de la interfaz PointListener como herramienta para realizar |
|
| 61 |
* un zoom menos. |
|
| 60 |
* <p>Listener for doing a <i>zoom out</i> operation on the extent of the <code>ViewPort</code> of the associated {@link MapControl MapControl}
|
|
| 61 |
* object, selecting a point of the <code>MapControl</code> by a single click of any mouse's button.</p> |
|
| 62 |
* |
|
| 63 |
* <p>Calculates the new extent <i>r</i> with this equations: |
|
| 64 |
* <code><br> |
|
| 65 |
* ViewPort vp = mapControl.getMapContext().getViewPort();<br> |
|
| 66 |
* Point2D p2 = vp.toMapPoint(event.getPoint());<br> |
|
| 67 |
* double factor = 1/MapContext.ZOOMOUTFACTOR;<br> |
|
| 68 |
* Rectangle2D.Double r = new Rectangle2D.Double();<br> |
|
| 69 |
* double nuevoX = p2.getX() - ((vp.getExtent().getWidth() * factor) / 2.0);<br> |
|
| 70 |
* double nuevoY = p2.getY() - ((vp.getExtent().getHeight() * factor) / 2.0);<br> |
|
| 71 |
* r.x = nuevoX;<br> |
|
| 72 |
* r.y = nuevoY;<br> |
|
| 73 |
* r.width = vp.getExtent().getWidth() * factor;<br> |
|
| 74 |
* r.height = vp.getExtent().getHeight() * factor;<br> |
|
| 75 |
* vp.setExtent(r); |
|
| 76 |
* </code> |
|
| 77 |
* </p> |
|
| 78 |
* |
|
| 79 |
* <p>The ultimately extent will be an adaptation from that, calculated by the <code>ViewPort</code> |
|
| 80 |
* bearing in mind the ratio of the available rectangle.</p> |
|
| 62 | 81 |
* |
| 63 |
* @author Vicente Caballero Navarro |
|
| 82 |
* @see MapContext#ZOOMOUTFACTOR |
|
| 83 |
* @see ViewPort#setExtent(Rectangle2D) |
|
| 84 |
* @see ZoomInListenerImpl |
|
| 85 |
* @see ZoomOutRightButtonListener |
|
| 64 | 86 |
*/ |
| 65 | 87 |
public class ZoomOutListenerImpl implements PointListener {
|
| 66 |
private final Image izoomout = new ImageIcon(MapControl.class.getResource( |
|
| 67 |
"images/ZoomOutCursor.gif")).getImage(); |
|
| 88 |
/** |
|
| 89 |
* The image to display when the cursor is active. |
|
| 90 |
*/ |
|
| 91 |
private final Image izoomout = new ImageIcon(MapControl.class.getResource("images/ZoomOutCursor.gif")).getImage();
|
|
| 92 |
|
|
| 93 |
/** |
|
| 94 |
* The cursor used to work with this tool listener. |
|
| 95 |
* |
|
| 96 |
* @see #getCursor() |
|
| 97 |
*/ |
|
| 68 | 98 |
private Cursor cur = Toolkit.getDefaultToolkit().createCustomCursor(izoomout, |
| 69 | 99 |
new Point(16, 16), ""); |
| 100 |
|
|
| 101 |
/** |
|
| 102 |
* Reference to the <code>MapControl</code> object that uses. |
|
| 103 |
*/ |
|
| 70 | 104 |
private MapControl mapControl; |
| 71 | 105 |
|
| 72 | 106 |
/** |
| 73 |
* Crea un nuevo ZoomOutListenerImpl.
|
|
| 74 |
* |
|
| 75 |
* @param mapControl MapControl.
|
|
| 107 |
* <p>Creates a new <code>ZoomOutListenerImpl</code> object.</p>
|
|
| 108 |
*
|
|
| 109 |
* @param mapControl the <code>MapControl</code> where will be applied the changes
|
|
| 76 | 110 |
*/ |
| 77 | 111 |
public ZoomOutListenerImpl(MapControl mapControl) {
|
| 78 | 112 |
this.mapControl = mapControl; |
| 79 | 113 |
} |
| 80 | 114 |
|
| 81 |
/** |
|
| 82 |
* @see com.iver.cit.gvsig.fmap.tools.Listeners.PointListener#point(com.iver.cit.gvsig.fmap.tools.PointEvent) |
|
| 115 |
/* |
|
| 116 |
* (non-Javadoc) |
|
| 117 |
* @see com.iver.cit.gvsig.fmap.tools.Listeners.PointListener#point(com.iver.cit.gvsig.fmap.tools.Events.PointEvent) |
|
| 83 | 118 |
*/ |
| 84 | 119 |
public void point(PointEvent event) {
|
| 85 | 120 |
ViewPort vp = mapControl.getMapContext().getViewPort(); |
| ... | ... | |
| 102 | 137 |
// mapControl.drawMap(false); |
| 103 | 138 |
} |
| 104 | 139 |
|
| 105 |
/** |
|
| 140 |
/* |
|
| 141 |
* (non-Javadoc) |
|
| 106 | 142 |
* @see com.iver.cit.gvsig.fmap.tools.Listeners.ToolListener#getCursor() |
| 107 | 143 |
*/ |
| 108 | 144 |
public Cursor getCursor() {
|
| 109 | 145 |
return cur; |
| 110 | 146 |
} |
| 111 | 147 |
|
| 112 |
/** |
|
| 148 |
/* |
|
| 149 |
* (non-Javadoc) |
|
| 113 | 150 |
* @see com.iver.cit.gvsig.fmap.tools.Listeners.ToolListener#cancelDrawing() |
| 114 | 151 |
*/ |
| 115 | 152 |
public boolean cancelDrawing() {
|
| ... | ... | |
| 117 | 154 |
return true; |
| 118 | 155 |
} |
| 119 | 156 |
|
| 157 |
/* |
|
| 158 |
* (non-Javadoc) |
|
| 159 |
* @see com.iver.cit.gvsig.fmap.tools.Listeners.PointListener#pointDoubleClick(com.iver.cit.gvsig.fmap.tools.Events.PointEvent) |
|
| 160 |
*/ |
|
| 120 | 161 |
public void pointDoubleClick(PointEvent event) {
|
| 121 | 162 |
// TODO Auto-generated method stub |
| 122 | 163 |
|
Also available in: Unified diff