root / trunk / extensions / extRasterTools-SE / src / org / gvsig / rastertools / georeferencing / ui / zoom / ViewControl.java @ 18230
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/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana
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*
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* Copyright (C) 2007 IVER T.I. and Generalitat Valenciana.
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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., 59 Temple Place - Suite 330, Boston, MA 02111-1307,USA.
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*/
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package org.gvsig.rastertools.georeferencing.ui.zoom; |
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import java.awt.BorderLayout; |
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import java.awt.Dimension; |
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import java.awt.GridBagConstraints; |
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import java.awt.GridBagLayout; |
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import java.awt.Insets; |
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import java.awt.event.ActionEvent; |
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import java.awt.event.ActionListener; |
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import java.awt.geom.Point2D; |
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import java.awt.geom.Rectangle2D; |
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import java.awt.image.BufferedImage; |
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import java.util.ArrayList; |
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import javax.swing.JButton; |
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import javax.swing.JPanel; |
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import org.gvsig.raster.util.RasterToolsUtil; |
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/**
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* <P>
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* Control de zoom. Muestra una imagen contenida en un buffer con controles de aumento
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* y disminuci?n del zoom de la misma.
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* </P><P>
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* El visualizador mostrar? el buffer de datos pasado en <code>setDrawParams</code>.
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* En esta llamada asignamos tambi?n el Extent del ?rea de datos, tama?o de pixel y punto
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* del buffer que coincidir? con el centro del control de zoom. De esta forma la imagen
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* visualizada se centra sobre este punto. En caso de no tener informaci?n geogr?fica del
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* buffer de datos a visualizar el Extent coincidir? con su tama?o en p?xeles y el tama?o
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* de pixel ser? de 1. El punto donde queramos centrar en este caso se dar? tambi?n en
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* coordenadas pixel.
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* </P><P>
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* Hay dos usos posibles en este control al accionar el bot?n de zoom: el primero de ellos, en
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* caso de que no haya ning?n listener del control de zoom registrado. En este caso se
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* aplicar? un escalado sobre los datos del buffer pasado por par?metro. En el caso de que
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* haya un listener registrado (IExtensionBuffer) no se aplicar? un escalado sobre el buffer
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* sino que se aplicar? una escala de 1.0 y se ejecutar? el m?todo request del interfaz
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* registrado para que el cliente reciba notificaci?n del nuevo extent.
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* </P>
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* <P>
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* En la inicializaci?n podemos solicitar que los controles de zoom est?n a la izquierda,
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* a la derecha o no esten.
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* </p>
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*
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* 21/12/2007
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* @author Nacho Brodin nachobrodin@gmail.com
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*/
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public class ViewControl extends JPanel implements ActionListener, ToolListener { |
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private static final long serialVersionUID = 1L; |
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//Lista de controles
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public static final int ZOOM_INCREASE = 0; |
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public static final int ZOOM_DECREASE = 1; |
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public static final int SELECT_ZOOM_AREA = 2; |
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public static final int FULL_VIEW = 3; |
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public static final int PREV_ZOOM = 4; |
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public static final int RIGHT_CONTROL = 1; |
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public static final int LEFT_CONTROL = 2; |
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public static final int NOCONTROL = 0; |
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private final double SCALE = 0.5; |
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private int control; |
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private CanvasZone canvas = null; |
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private JPanel buttons = null; |
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private JButton bZoomMas = null; |
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private JButton bZoomMenos = null; |
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private JButton bSelectZoomArea = null; |
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private JButton bFullView = null; |
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private JButton bPrevZoom = null; |
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private double stepScale = 2; |
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private IExtensionRequest extReq = null; |
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private ViewRecord zoomRecord = null; |
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private ArrayList toolList = null; |
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/**
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* Constructor. Crea el panel y asigna el lado donde se crear?n los botones
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* @param right true para los botones a derecha y false para la izquierda
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*/
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public ViewControl(int control) { |
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this.control = control;
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toolList = new ArrayList(); |
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init(); |
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//Tools predefinidas
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addTool(new ZoomRectangleTool(canvas, this)); |
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} |
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/**
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* A?ade una tool a la vista de zoom
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* @param tool
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*/
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public void addTool(BaseViewTool tool) { |
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if(!toolList.contains(tool))
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toolList.add(tool); |
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} |
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/**
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* A?ade una tool a la vista de zoom
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* @param tool
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*/
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public void replaceTool(BaseViewTool tool) { |
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for (int i = 0; i < toolList.size(); i++) { |
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if(toolList.get(i).getClass().isInstance(tool)) {
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toolList.remove(i); |
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break;
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} |
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toolList.add(tool); |
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} |
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} |
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/**
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* Selecciona una herramienta a partir de su clase. Si el argumento es null
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* elimina cualquier herramienta seleccionada.
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* @param tool
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*/
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public void selectTool(Class tool) { |
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if(tool == null) { |
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for (int i = 0; i < toolList.size(); i++) |
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((BaseViewTool)toolList.get(i)).setSelected(false);
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canvas.setSelectedTool(null);
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return;
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} |
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for (int i = 0; i < toolList.size(); i++) { |
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if(tool.isInstance(toolList.get(i))) {
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((BaseViewTool)toolList.get(i)).setSelected(true);
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canvas.setSelectedTool((BaseViewTool)toolList.get(i)); |
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} else
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((BaseViewTool)toolList.get(i)).setSelected(false);
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} |
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} |
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/**
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* Inicializaci?n de los componetes
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*/
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private void init() { |
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BorderLayout layout = new BorderLayout(); |
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setLayout(layout); |
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if(control == LEFT_CONTROL)
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add(getButtonsPanel(), BorderLayout.WEST);
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if(control == RIGHT_CONTROL)
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add(getButtonsPanel(), BorderLayout.EAST);
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add(getCanvas(), BorderLayout.CENTER);
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} |
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/**
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* Oculta el bot?n indicado en el par?metro
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* @param b Constante definida en ZoomControl
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*/
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public void hideButton(int b) { |
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switch (b) {
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case ZOOM_INCREASE: this.getBZoomMas().setVisible(false); |
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break;
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case ZOOM_DECREASE: this.getBZoomMenos().setVisible(false); |
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break;
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case SELECT_ZOOM_AREA: this.getBSelectZoomArea().setVisible(false); |
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break;
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case FULL_VIEW: this.getBFullView().setVisible(false); |
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break;
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case PREV_ZOOM: this.getBPrevZoom().setVisible(false); |
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break;
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default:
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break;
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} |
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} |
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/**
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* Muestra el bot?n indicado en el par?metro
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* @param b Constante definida en ZoomControl
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*/
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public void showButton(int b) { |
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switch (b) {
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case ZOOM_INCREASE: this.getBZoomMas().setVisible(true); |
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break;
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case ZOOM_DECREASE: this.getBZoomMenos().setVisible(true); |
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break;
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case SELECT_ZOOM_AREA: this.getBSelectZoomArea().setVisible(true); |
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break;
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case FULL_VIEW: this.getBFullView().setVisible(true); |
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break;
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case PREV_ZOOM: this.getBPrevZoom().setVisible(true); |
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break;
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default:
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break;
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} |
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} |
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/**
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* Asigna una capa gr?fica
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* @param layer IGraphicLayer
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*/
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public void setGraphicLayer(IGraphicLayer layer) { |
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canvas.setGraphicLayer(layer); |
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} |
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/**
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* Obtiene el panel de dibujado del zoom
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* @return Canvas Zone
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*/
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public CanvasZone getCanvas() {
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if(canvas == null) { |
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canvas = new CanvasZone();
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canvas.setBorder(javax.swing.BorderFactory.createBevelBorder(javax.swing.border.BevelBorder.LOWERED)); |
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} |
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return canvas;
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} |
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/**
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* Obtiene el panel con los botones de zoom
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* @return
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*/
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public JPanel getButtonsPanel() { |
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if(buttons == null) { |
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buttons = new JPanel(); |
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GridBagLayout l = new GridBagLayout(); |
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GridBagConstraints gbc = new GridBagConstraints(); |
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gbc.insets = new Insets(5, 0, 3, 3); |
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buttons.setLayout(l); |
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buttons.add(getBZoomMas(), gbc); |
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gbc.gridy = 1;
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buttons.add(getBZoomMenos(), gbc); |
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gbc.gridy = 2;
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buttons.add(getBSelectZoomArea(), gbc); |
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gbc.gridy = 3;
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buttons.add(getBFullView(), gbc); |
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gbc.gridy = 4;
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buttons.add(getBPrevZoom(), gbc); |
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} |
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return buttons;
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} |
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/**
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* Crea el bot?n de zoom m?s
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* @return JButton
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*/
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public JButton getBZoomMas() { |
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if (bZoomMas == null) { |
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bZoomMas = new JButton(); |
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bZoomMas.setToolTipText(RasterToolsUtil.getText(this, "zoom_mas")); |
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bZoomMas.setPreferredSize(new java.awt.Dimension(25,25)); |
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try{
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bZoomMas.setIcon(RasterToolsUtil.getIcon("increase-icon"));
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}catch(NullPointerException e){ |
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//Sin icono
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} |
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bZoomMas.addActionListener(this);
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} |
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return bZoomMas;
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} |
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/**
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* Crea el bot?n de zoom menos
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* @return JButton
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*/
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public JButton getBZoomMenos() { |
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if (bZoomMenos == null) { |
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bZoomMenos = new JButton(); |
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bZoomMenos.setToolTipText(RasterToolsUtil.getText(this, "zoom_menos")); |
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bZoomMenos.setPreferredSize(new java.awt.Dimension(25,25)); |
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try{
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bZoomMenos.setIcon(RasterToolsUtil.getIcon("decrease-icon"));
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}catch(NullPointerException e){ |
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//Sin icono
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} |
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bZoomMenos.addActionListener(this);
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} |
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return bZoomMenos;
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} |
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/**
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* Crea el bot?n de selecci?n de zoom por ?rea
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* @return JButton
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*/
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public JButton getBSelectZoomArea() { |
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if (bSelectZoomArea == null) { |
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bSelectZoomArea = new JButton(); |
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bSelectZoomArea.setToolTipText(RasterToolsUtil.getText(this, "select_zoom_area")); |
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bSelectZoomArea.setPreferredSize(new java.awt.Dimension(25,25)); |
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try{
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bSelectZoomArea.setIcon(RasterToolsUtil.getIcon("selectzoomarea-icon"));
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}catch(NullPointerException e){ |
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//Sin icono
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} |
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bSelectZoomArea.addActionListener(this);
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} |
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return bSelectZoomArea;
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} |
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/**
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* Crea el bot?n de zoom m?s
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* @return
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*/
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public JButton getBPrevZoom() { |
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if (bPrevZoom == null) { |
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bPrevZoom = new JButton(); |
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bPrevZoom.setToolTipText(RasterToolsUtil.getText(this, "prev_zoom")); |
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bPrevZoom.setPreferredSize(new java.awt.Dimension(25,25)); |
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try{
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bPrevZoom.setIcon(RasterToolsUtil.getIcon("prevzoom-icon"));
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}catch(NullPointerException e){ |
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//Sin icono
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} |
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bPrevZoom.addActionListener(this);
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} |
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return bPrevZoom;
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} |
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/**
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* Crea el bot?n de zoom completo. El zoom completo inicializa al primer zoom
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* que recibi? en caso de que no se est? usando un IExtensionRequest, ya que no tendr?a conocimiento
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* del tama?o total de capa, sino solo del buffer que tiene en ese momento. En caso de usar un
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* IExtensionRequest entonces se har? la petici?n correspondiente al interfaz.
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* @return JButton
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*/
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public JButton getBFullView() { |
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if (bFullView == null) { |
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bFullView = new JButton(); |
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bFullView.setToolTipText(RasterToolsUtil.getText(this, "full_view")); |
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bFullView.setPreferredSize(new java.awt.Dimension(25,25)); |
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try{
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bFullView.setIcon(RasterToolsUtil.getIcon("fullview-icon"));
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}catch(NullPointerException e){ |
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//Sin icono
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} |
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bFullView.addActionListener(this);
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} |
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return bFullView;
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} |
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/**
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* Asigna los par?metros de dibujado
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* @param img Buffer con un ?rea de datos
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* @param ext Rectangle2D del ?rea de datos dada
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* @param pixelSize Tama?o de pixel
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* @param center Punto del ?rea de datos donde se quiere centrar el dibujado del buffer
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*/
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public void setDrawParams(BufferedImage img, Rectangle2D ext, double pixelSize, Point2D center) { |
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getZoomRecord().setRequest(ext); |
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canvas.setDrawParams(img, ext, pixelSize, center) ; |
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} |
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/**
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* Asigna un nuevo centro de visualizaci?n
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* @param center
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*/
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public void setCenter(Point2D center) { |
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canvas.setCenter(center); |
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} |
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/**
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* Asigna un nuevo centro de visualizaci?n en coordenadas pixel
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* del ?rea de dibujado (canvas)
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* @param center
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*/
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public void setPixelCenter(Point2D center) { |
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if(extReq == null) |
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canvas.setPixelCenter(center); |
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else {
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} |
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} |
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/**
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* Asigna un nuevo centro de visualizaci?n en coordenadas pixel. Esta llamada tiene
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* en cuenta solo p?xeles completos. No centra sobre porciones de pixel cuando el zoom es
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* mayor de 1:1.
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* @param center
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*/
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public void setPixelCenter(int x, int y) { |
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if(extReq == null) |
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canvas.setPixelCenter(x, y); |
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else {
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//System.out.println(new Point2D.Double(x, y));
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Point2D p1 = canvas.viewCoordsToWorld(new Point2D.Double(x, y)); |
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//System.out.println(p1);
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//System.out.println(canvas.viewCoordsFromWorld(p1));
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/*canvas.setZoom(1);
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canvas.setViewCenter(new Point2D.Double(x, y));
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double cx = canvas.getCenter().getX() - (canvas.getCanvasExtent().getWidth() / 2);
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double cy = canvas.getCenter().getY() - (canvas.getCanvasExtent().getHeight() / 2);
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extReq.request(new Rectangle2D.Double(cx, cy, canvas.getCanvasExtent().getWidth(), canvas.getCanvasExtent().getHeight()));*/
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} |
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} |
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/**
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* Registra un objeto IExtensionRequest para que no se aplique un escalado sobre
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* el buffer pasado por par?metro. Alternativamente a la aplicaci?n de este escalado
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* se ejecutar? el m?todo request del interfaz para que el cliente pueda pasar un
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* nuevo buffer con escala 1:1 y con la extensi?n correspondiente al zoom, Es decir, se
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* deja en manos del cliente la aplicaci?n del zoom.
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* @param er
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*/
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public void setExtensionRequest(IExtensionRequest er) { |
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this.extReq = er;
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} |
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/**
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* Obtiene el historico de zooms
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* @return ZoomRecord
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*/
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public ViewRecord getZoomRecord() {
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if(zoomRecord == null) { |
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zoomRecord = new ViewRecord();
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//zoomRecord.setRequest(new Integer(FULL_VIEW));
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} |
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return zoomRecord;
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} |
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/**
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* Eventos de los botones zoom m?s y zoom menos.
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*/
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public void actionPerformed(ActionEvent e) { |
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if(extReq == null) { |
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if(e.getSource() == bZoomMas)
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canvas.setZoom(canvas.getZoom() * stepScale); |
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if(e.getSource() == bZoomMenos)
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canvas.setZoom(canvas.getZoom() / stepScale); |
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if(e.getSource() == bFullView)
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canvas.setZoom(1);
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} else {
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double width = 0, height = 0; |
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canvas.setZoom(1);
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if(e.getSource() == bFullView) {
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extReq.fullExtent(); |
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return;
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} |
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if(e.getSource() == bPrevZoom) {
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Object request = getZoomRecord().getRequest();
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if(request != null) { |
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if(request instanceof Rectangle2D) |
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extReq.request((Rectangle2D)request);
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if(request instanceof Integer && ((Integer)request).intValue() == FULL_VIEW) |
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extReq.fullExtent(); |
| 460 |
getZoomRecord().getRequest(); //El que hemos metido al hacer zoom previo no sirve por lo que hay que sacarlo
|
| 461 |
} |
| 462 |
return;
|
| 463 |
} |
| 464 |
if(e.getSource() == bSelectZoomArea) {
|
| 465 |
selectTool(ZoomRectangleTool.class); |
| 466 |
return;
|
| 467 |
} |
| 468 |
if(e.getSource() == bZoomMas) {
|
| 469 |
width = canvas.getCanvasExtent().getWidth() * SCALE; |
| 470 |
height = canvas.getCanvasExtent().getHeight() * SCALE; |
| 471 |
} |
| 472 |
if(e.getSource() == bZoomMenos) {
|
| 473 |
width = canvas.getCanvasExtent().getWidth() / SCALE; |
| 474 |
height = canvas.getCanvasExtent().getHeight() / SCALE; |
| 475 |
} |
| 476 |
//C?digo com?n a bZoomMas y bZoomMenos
|
| 477 |
double x = canvas.getCenter().getX() - (width / 2); |
| 478 |
double y = canvas.getCenter().getY() - (height / 2); |
| 479 |
Rectangle2D request = new Rectangle2D.Double(x, y, width, height); |
| 480 |
extReq.request(request); |
| 481 |
} |
| 482 |
} |
| 483 |
|
| 484 |
/**
|
| 485 |
* Obtiene el ancho del canvas
|
| 486 |
* @return
|
| 487 |
*/
|
| 488 |
public int getCanvasWith() { |
| 489 |
return canvas.getVisibleRect().width;
|
| 490 |
} |
| 491 |
|
| 492 |
/**
|
| 493 |
* Obtiene el alto del canvas
|
| 494 |
* @return
|
| 495 |
*/
|
| 496 |
public int getCanvasHeight() { |
| 497 |
return canvas.getVisibleRect().height;
|
| 498 |
} |
| 499 |
|
| 500 |
/**
|
| 501 |
* Evento de finalizaci?n de la tool que maneja el viewControl
|
| 502 |
*/
|
| 503 |
public void endAction(ToolEvent ev) { |
| 504 |
if(ev.getSource() instanceof ZoomRectangleTool) { |
| 505 |
Rectangle2D extent = (Rectangle2D)canvas.getSelectedTool().getResult(); |
| 506 |
extReq.request(extent); |
| 507 |
this.selectTool(null); |
| 508 |
} |
| 509 |
} |
| 510 |
|
| 511 |
} |