root / trunk / libraries / libCq_CMS_praster / src / org / cresques / ui / cmd / CmdPan.java @ 8026
History | View | Annotate | Download (2 KB)
| 1 |
/*
|
|---|---|
| 2 |
* Cresques Mapping Suite. Graphic Library for constructing mapping applications.
|
| 3 |
*
|
| 4 |
* Copyright (C) 2004-5.
|
| 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 2
|
| 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
|
| 19 |
*
|
| 20 |
* For more information, contact:
|
| 21 |
*
|
| 22 |
* cresques@gmail.com
|
| 23 |
*/
|
| 24 |
package org.cresques.ui.cmd; |
| 25 |
|
| 26 |
import org.cresques.ui.CQCursor; |
| 27 |
import org.cresques.ui.CQMapCanvas; |
| 28 |
|
| 29 |
import java.awt.geom.Point2D; |
| 30 |
|
| 31 |
|
| 32 |
/**
|
| 33 |
* Comando pan.
|
| 34 |
* A?ade al canvas la capacidad de desplazar la vista.
|
| 35 |
* @author "Luis W. Sevilla" <sevilla_lui@gva.es>
|
| 36 |
*/
|
| 37 |
public class CmdPan extends Cmd { |
| 38 |
private Point2D ptIni = null; |
| 39 |
|
| 40 |
/**
|
| 41 |
* Construye un nuevo CmdPan para el Canvas.
|
| 42 |
* @param canvas
|
| 43 |
*/
|
| 44 |
public CmdPan(CQMapCanvas canvas) {
|
| 45 |
super(canvas);
|
| 46 |
eventsWanted = LEFT | PRESS | RELEASE; |
| 47 |
cursor = CQCursor.getCursor(CQCursor.PAN_CURSOR); |
| 48 |
} |
| 49 |
|
| 50 |
/**
|
| 51 |
* Recibe los eventos del rat?n.
|
| 52 |
*/
|
| 53 |
public void cmd(Point2D pt, int btn, int mouseEvent) { |
| 54 |
if (mouseEvent == Cmd.RELEASE) {
|
| 55 |
pan(ptIni, pt); |
| 56 |
} else if (mouseEvent == Cmd.PRESS) { |
| 57 |
ptIni = pt; |
| 58 |
} |
| 59 |
} |
| 60 |
|
| 61 |
/**
|
| 62 |
* Realiza un desplazamiento de la vista.
|
| 63 |
* @param ptIni Punto inicial.
|
| 64 |
* @param ptFin Punto final.
|
| 65 |
*/
|
| 66 |
void pan(Point2D ptIni, Point2D ptFin) { |
| 67 |
canvas.getVPData().pan(ptIni, ptFin); |
| 68 |
canvas.viewPortChanged(); |
| 69 |
canvas.repaint(); |
| 70 |
} |
| 71 |
} |