| gvSIG desktop 1

/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana

 *

 * Copyright (C) 2004 IVER T.I. and Generalitat Valenciana.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2

 * of the License, or (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.

 */

package org.cresques.ui.BrightnessContrast;

import java.awt.GridBagConstraints;

import java.awt.GridBagLayout;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.FocusEvent;

import java.awt.event.FocusListener;

import javax.swing.JLabel;

import javax.swing.JPanel;

import javax.swing.JSlider;

import javax.swing.JTextField;

import javax.swing.event.ChangeEvent;

import javax.swing.event.ChangeListener;

/**

 * Clase base para un componente con un slider y un campo de texto.

 * Contiene una etiqueta entre el slider y el campo de texto en la que se

 * pueden poner las unidades en las que se cuantifica el valor.

 * @author Miguel ?ngel Querol Carratal?  <querol_mig@gva.es>

 *

 */

public class SliderTextPanel extends JPanel implements ChangeListener, FocusListener, ActionListener{

        private JPanel pName = null;

        private JPanel pSliderText = null;

        private JSlider jSlider = null;

        private JTextField jTextField = null;

        private JLabel lPercent = null;

        private boolean decimal = false;

        /**

         * This is the default constructor

         */

        public SliderTextPanel() {

                super();

                initialize();

        }

        /**

         * This method initializes this

         * 

         * @return void

         */

        private void initialize() {

                GridBagConstraints gridBagConstraints1 = new GridBagConstraints();

                gridBagConstraints1.gridx = 0;

                gridBagConstraints1.gridy = 1;

                GridBagConstraints gridBagConstraints = new GridBagConstraints();

                gridBagConstraints.gridx = 0;

                gridBagConstraints.gridy = 0;

                this.setLayout(new GridBagLayout());

                this.setSize(180, 45);

                this.setPreferredSize(new java.awt.Dimension(180,45));

                this.add(getJPanel(), gridBagConstraints);

                this.add(getJPanel1(), gridBagConstraints1);

                this.getJSlider().addChangeListener(this);

                this.getJTextField().addFocusListener(this);

                this.getJTextField().addActionListener(this);

        }

        /**

         * This method initializes jPanel        

         *         

         * @return javax.swing.JPanel        

         */

        protected JPanel getJPanel() {

                if (pName == null) {

                        pName = new JPanel();

                        pName.setLayout(new GridBagLayout());

                        pName.setPreferredSize(new java.awt.Dimension(180,25));

                }

                return pName;

        }

        /**

         * This method initializes jPanel1        

         *         

         * @return javax.swing.JPanel        

         */

        private JPanel getJPanel1() {

                if (pSliderText == null) {

                        GridBagConstraints gridBagConstraints6 = new GridBagConstraints();

                        gridBagConstraints6.gridx = 1;

                        gridBagConstraints6.gridy = 0;

                        lPercent = new JLabel();

                        lPercent.setText("");

                        GridBagConstraints gridBagConstraints5 = new GridBagConstraints();

                        gridBagConstraints5.gridx = 1;

                        gridBagConstraints5.gridy = 0;

                        GridBagConstraints gridBagConstraints4 = new GridBagConstraints();

                        gridBagConstraints4.fill = java.awt.GridBagConstraints.HORIZONTAL;

                        gridBagConstraints4.gridy = 0;

                        gridBagConstraints4.weightx = 1.0;

                        gridBagConstraints4.insets = new java.awt.Insets(0,6,0,6);

                        gridBagConstraints4.gridx = 2;

                        GridBagConstraints gridBagConstraints3 = new GridBagConstraints();

                        gridBagConstraints3.gridx = 1;

                        gridBagConstraints3.gridy = 0;

                        GridBagConstraints gridBagConstraints2 = new GridBagConstraints();

                        gridBagConstraints2.fill = java.awt.GridBagConstraints.HORIZONTAL;

                        gridBagConstraints2.gridy = 0;

                        gridBagConstraints2.weightx = 1.0;

                        gridBagConstraints2.gridx = 0;

                        pSliderText = new JPanel();

                        pSliderText.setLayout(new GridBagLayout());

                        pSliderText.setPreferredSize(new java.awt.Dimension(180,20));

                        pSliderText.add(getJSlider(), gridBagConstraints2);

                        pSliderText.add(getJTextField(), gridBagConstraints4);

                        pSliderText.add(lPercent, gridBagConstraints6);

                }

                return pSliderText;

        }

        /**

         * This method initializes jSlider        

         *         

         * @return javax.swing.JSlider        

         */

        public JSlider getJSlider() {

                if (jSlider == null) {

                        jSlider = new JSlider();

                        jSlider.setPreferredSize(new java.awt.Dimension(100,16));

                }

                return jSlider;

        }

        /**

         * This method initializes jTextField        

         *         

         * @return javax.swing.JTextField        

         */

        public JTextField getJTextField() {

                if (jTextField == null) {

                        jTextField = new JTextField();

                        jTextField.setPreferredSize(new java.awt.Dimension(20,19));

                        jTextField.setComponentOrientation(java.awt.ComponentOrientation.LEFT_TO_RIGHT);

                        jTextField.setText(String.valueOf(this.getJSlider().getValue()));

                }

                return jTextField;

        }

        /**

         * Pone una cadena con el tipo de unidad del cuadro de texto entre el slider

         * y el TextField.

         * @param cadena a poner entre el slider y el cudro de texto.

         */

        protected void setUnitText(String unit){

                lPercent.setText(unit);

        }

        /**

         * Activa o desactiva el control del panel

         * @param active

         */

        public void setControlEnabled(boolean active){

                this.jSlider.setEnabled(active);

                this.jTextField.setEnabled(active);

                this.lPercent.setEnabled(active);

                if(active == false){

                        this.jTextField.setForeground(this.getBackground());

                }else{

                        this.jTextField.setForeground(java.awt.Color.black);

                }

        }

        /**

         * Ponel el slider al valor que le pasamos

         * @param value

         */

        public void setSliderValue(int value){

                jSlider.setValue(value);

        }

        /**

         * Pone en el campo de texto a la derecha del slider el valor que le pasamos

         * como parametro

         * @param value: valor que aparecera en el campo de texto.

         */

        public void setTextValue(String value){

                this.getJTextField().setText(value);

        }

        /**

         * Devuelve el valor actual del campo de texto

         * @return: valor del campo de texto.

         */

        public String getTextValue(){

                return this.jTextField.getText();

        }

        public void stateChanged(ChangeEvent e) {

                if(e.getSource() == this.jSlider){

                        if(decimal == true)

                                this.jTextField.setText(String.valueOf(this.jSlider.getValue()) + ".0");

                        if(decimal == false)

                                this.jTextField.setText(String.valueOf(this.jSlider.getValue()));

                }

        }

        /**

         * Da el rango de valores en el que se mover? el slider

         * @param min

         * @param max

         */

        public void setSliderRange(int min, int max){

                this.jSlider.setMaximum(max);

                this.jSlider.setMinimum(min);

        }

        public void focusGained(FocusEvent e) {

                // TODO Auto-generated method stub

        }

        public void focusLost(FocusEvent e) {

                if(e.getSource() == this.jTextField)

                        checkTailText();

        }

        public void actionPerformed(ActionEvent e) {

                if(e.getSource() == this.jTextField)

                        checkTailText();

        }

         /**

     * Controla que si el formato introducido en el textfield

     * de Recorte de colas es numerico se actualiza la posici?n del

     * slider

     */

    private void checkTailText() {

        String text = getJTextField().getText();

        double value = 0;

        try {

                if (!text.equals(""))

                value = (Double.parseDouble(text) * 100) / 50;

                value = Double.valueOf(text).doubleValue();          

            getJSlider().setValue((int) Math.round(value));

            getJTextField().setText(text);

        } catch (NumberFormatException exc) {

            System.err.println("Formato no numerico");

            getJTextField().setText("0.0");

            getJSlider().setValue(0);

        }

    }

        public void setDecimal (boolean dec){

                decimal = dec;

        }

}