gvsig-raster / org.gvsig.raster.georeferencing / trunk / org.gvsig.raster.georeferencing / org.gvsig.raster.georeferencing.swing / org.gvsig.raster.georeferencing.swing.impl / src / main / java / org / gvsig / raster / georeferencing / swing / impl / tool / ZoomRectangleTool.java @ 1711
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/* gvSIG. Geographic Information System of the Valencian Government
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*
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* Copyright (C) 2007-2008 Infrastructures and Transports Department
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* of the Valencian Government (CIT)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
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* MA 02110-1301, USA.
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*
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*/
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package org.gvsig.raster.georeferencing.swing.impl.tool; |
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import java.awt.Color; |
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import java.awt.Graphics; |
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import java.awt.event.MouseEvent; |
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import java.awt.event.MouseListener; |
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import java.awt.event.MouseMotionListener; |
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import java.awt.geom.Point2D; |
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import java.awt.geom.Rectangle2D; |
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import org.gvsig.raster.georeferencing.swing.impl.view.CanvasZone; |
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import org.gvsig.raster.georeferencing.swing.view.ToolEvent; |
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import org.gvsig.raster.georeferencing.swing.view.ToolListener; |
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/**
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* Herramienta de selecci?n de zoom sobre la vista.
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*
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* 17/01/2008
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* @author Nacho Brodin (nachobrodin@gmail.com)
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*/
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public class ZoomRectangleTool extends BaseViewTool implements MouseListener, MouseMotionListener { |
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private Point2D initPoint = null; |
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private double x = 0, y = 0, w = 0, h = 0; |
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private Rectangle2D result = null; |
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/**
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* Constructor. Asigna el canvas e inicializa los listeners.
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* @param canvas
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*/
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public ZoomRectangleTool(CanvasZone canvas, ToolListener listener) {
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super(canvas, listener);
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canvas.addMouseListener(this);
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canvas.addMouseMotionListener(this);
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.rastertools.georeferencing.ui.zoom.IViewTool#draw(java.awt.image.BufferedImage, java.awt.geom.Rectangle2D)
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*/
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public void draw(Graphics g) { |
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if(initPoint == null || w == 0 || h == 0) |
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return;
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g.setColor(Color.RED);
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g.drawRect((int)x, (int)y, (int)w, (int)h); |
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} |
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/*
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* (non-Javadoc)
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* @see org.gvsig.rastertools.georeferencing.ui.zoom.IViewTool#getResult()
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*/
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public Object getResult() { |
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return result;
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} |
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/**
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* Selecciona el punto inicial del cuadro del que se quiere el zoom
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*/
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public void mousePressed(MouseEvent e) { |
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if(isActive()) {
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initPoint = e.getPoint(); |
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//Especificamos un tama?o m?nimo por si no se llega a hacer dragged
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x = initPoint.getX(); |
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y = initPoint.getY(); |
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w = 30;
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h = 10;
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result = null;
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} |
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} |
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/**
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* Asigna el flag que activa y desactiva la herramienta
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* @param active true para activarla y false para desactivarla
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*/
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public void setActive(boolean active) { |
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this.active = active;
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if(active)
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onTool(new ToolEvent(this)); |
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else
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offTool(new ToolEvent(this)); |
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} |
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/**
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* Dibujado del cuadro con el ?rea a hacer zoom.
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*/
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public void mouseDragged(MouseEvent e) { |
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if(isActive()) {
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x = initPoint.getX(); |
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y = initPoint.getY(); |
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w = Math.abs(e.getX() - x);
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h = Math.abs(e.getY() - y);
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if(e.getX() < x)
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x = e.getX(); |
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if(e.getY() < y)
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y = e.getY(); |
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Graphics g1 = canvas.getGraphics();
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g1.setColor(Color.RED);
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g1.drawRect((int)x,(int)y, (int)w, (int)h); |
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} |
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} |
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/*
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* (non-Javadoc)
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* @see java.awt.event.MouseListener#mouseReleased(java.awt.event.MouseEvent)
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*/
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public void mouseReleased(MouseEvent e) { |
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if(isActive()) {
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//Ajuste de la petici?n a la proporci?n del canvas. Esto se hace porque la relaci?n entre
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//el ancho y alto del canvas es distinta a la del cuadro que hemos pintado en pantalla.
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double centerX = x + (w / 2); |
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double centerY = y + (h / 2); |
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if(w < h) {
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if(((double)canvas.getWidth() / (double)canvas.getHeight()) <= (w / h)) { |
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h = (canvas.getHeight() * w) / canvas.getWidth(); |
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y = centerY - (h / 2);
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} else {
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w = (canvas.getWidth() * h) / canvas.getHeight(); |
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x = centerX - (w / 2);
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} |
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} else {
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if(((double)canvas.getWidth() / (double)canvas.getHeight()) >= (w / h)) { |
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w = (canvas.getWidth() * h) / canvas.getHeight(); |
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x = centerX - (w / 2);
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} else {
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h = (canvas.getHeight() * w) / canvas.getWidth(); |
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y = centerY - (h / 2);
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} |
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} |
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Point2D pInit = canvas.viewCoordsToWorld(new Point2D.Double(x, y)); |
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Point2D pEnd = canvas.viewCoordsToWorld(new Point2D.Double(x + w, y + h)); |
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/*if(canvas.getMinxMaxyUL())
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result = new Rectangle2D.Double(pInit.getX(), pEnd.getY(), Math.abs(pInit.getX() - pEnd.getX()), Math.abs(pInit.getY() - pEnd.getY()));
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else*/
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result = new Rectangle2D.Double(pInit.getX(), pEnd.getY(), Math.abs(pInit.getX() - pEnd.getX()), Math.abs(pInit.getY() - pEnd.getY())); |
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initPoint = null;
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x = y = w = h = 0;
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for (int i = 0; i < listeners.size(); i++) |
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((ToolListener)listeners.get(i)).endAction(new ToolEvent(this)); |
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} |
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} |
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public void mouseClicked(MouseEvent e) { |
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} |
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public void mouseEntered(MouseEvent e) { |
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} |
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public void mouseExited(MouseEvent e) { |
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} |
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public void mouseMoved(MouseEvent e) { |
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} |
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} |