Revision 92 trunk/libraries/libCq CMS for java.old/src/org/cresques/ui/cmd/CmdZoom.java
| CmdZoom.java | ||
|---|---|---|
| 1 | 1 |
package org.cresques.ui.cmd; |
| 2 | 2 |
|
| 3 |
import java.awt.Component; |
|
| 4 | 3 |
import java.awt.geom.Point2D; |
| 5 | 4 |
|
| 6 | 5 |
import java.awt.event.MouseEvent; |
| 7 | 6 |
|
| 7 |
import org.cresques.px.Extent; |
|
| 8 | 8 |
import org.cresques.ui.CQMapCanvas; |
| 9 | 9 |
|
| 10 |
/** |
|
| 11 |
* Comando zoom. |
|
| 12 |
* A?ade al canvas la capacidad de aumentar y disminuir la vista. |
|
| 13 |
* @author "Luis W. Sevilla" <sevilla_lui@gva.es> |
|
| 14 |
*/ |
|
| 10 | 15 |
public class CmdZoom extends Cmd {
|
| 11 |
public static final int type=Cmd.ZOOM; |
|
| 12 | 16 |
public double aumenta = 2.0; |
| 13 | 17 |
public double reduce = .5; |
| 14 |
public CmdZoom(Component canvas) {
|
|
| 18 |
private Point2D ptIni = null; |
|
| 19 |
|
|
| 20 |
/** |
|
| 21 |
* Construye un nuevo CmdZoom para el Canvas |
|
| 22 |
* @param canvas |
|
| 23 |
*/ |
|
| 24 |
public CmdZoom(CQMapCanvas canvas) {
|
|
| 15 | 25 |
super(canvas); |
| 16 | 26 |
eventsWanted = (LEFT | RIGHT | PRESS | RELEASE | DRAG); |
| 17 | 27 |
} |
| 28 |
|
|
| 29 |
/** |
|
| 30 |
* Recibe los eventos del rat?n. |
|
| 31 |
*/ |
|
| 18 | 32 |
public void cmd(Point2D pt, int bt, int mouseEvent) {
|
| 19 | 33 |
//System.out.println("Zoom: Evento = "+ mouseEvent);
|
| 20 |
if (mouseEvent == RELEASE) {
|
|
| 21 |
if (bt == MouseEvent.BUTTON1) |
|
| 22 |
((CQMapCanvas) canvas).zoom(aumenta, pt); |
|
| 23 |
else if (bt == MouseEvent.BUTTON3) |
|
| 24 |
((CQMapCanvas) canvas).zoom(reduce, pt); |
|
| 25 |
} |
|
| 34 |
if (mouseEvent == PRESS) {
|
|
| 35 |
ptIni = pt; |
|
| 36 |
} else if (mouseEvent == RELEASE) {
|
|
| 37 |
if (pt.getX() != ptIni.getX()) {
|
|
| 38 |
zoomBox(new Extent(ptIni, pt)); |
|
| 39 |
} else if (bt == MouseEvent.BUTTON1) {
|
|
| 40 |
zoomMas(pt); |
|
| 41 |
} else if (bt == MouseEvent.BUTTON3) {
|
|
| 42 |
zoomMenos(pt); |
|
| 43 |
} |
|
| 44 |
} |
|
| 26 | 45 |
} |
| 46 |
|
|
| 47 |
/** |
|
| 48 |
* Realiza un zoom de aumento, centrado en el Point2D; |
|
| 49 |
* @param pt |
|
| 50 |
*/ |
|
| 51 |
public void zoomMas(Point2D pt) {
|
|
| 52 |
canvas.getVPData().zoom(aumenta, pt); |
|
| 53 |
canvas.viewPortChanged(); |
|
| 54 |
canvas.repaint(); |
|
| 55 |
} |
|
| 56 |
|
|
| 57 |
/** |
|
| 58 |
* Realiza un zoom de disminuci?n, centrado en el Point2D; |
|
| 59 |
* @param pt |
|
| 60 |
*/ |
|
| 61 |
public void zoomMenos(Point2D pt) {
|
|
| 62 |
canvas.getVPData().zoom(reduce, pt); |
|
| 63 |
canvas.viewPortChanged(); |
|
| 64 |
canvas.repaint(); |
|
| 65 |
} |
|
| 66 |
|
|
| 67 |
/** |
|
| 68 |
* Realiza un zoom que abarque el Extent; |
|
| 69 |
* @param box |
|
| 70 |
*/ |
|
| 71 |
public void zoomBox(Extent box) {
|
|
| 72 |
canvas.getVPData().zoom(box); |
|
| 73 |
canvas.viewPortChanged(); |
|
| 74 |
canvas.repaint(); |
|
| 75 |
} |
|
| 27 | 76 |
} |
Also available in: Unified diff