| gvSIG desktop 1

package org.gvsig.coreplugin.preferences.general;

import java.awt.BasicStroke;

import java.awt.Color;

import java.awt.Dimension;

import java.awt.Graphics;

import java.awt.Graphics2D;

import java.awt.Toolkit;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.text.NumberFormat;

import java.util.prefs.Preferences;

import javax.swing.BorderFactory;

import javax.swing.ImageIcon;

import javax.swing.JComboBox;

import javax.swing.JLabel;

import javax.swing.JPanel;

import javax.swing.JTextField;

import javax.swing.border.Border;

import org.gvsig.andami.PluginServices;

import org.gvsig.andami.preferences.AbstractPreferencePage;

import org.gvsig.andami.preferences.StoreException;

import org.gvsig.gui.beans.swing.JBlank;

import org.gvsig.gui.beans.swing.JButton;

/**

 * Page to calculate correctly all the scales of screen.  In it we introduce

 * the values of our screen just as we see it.

 *

 * @author Vicente Caballero Navarro

 */

public class ScreenSettingsPage extends AbstractPreferencePage {

        protected static String id = ScreenSettingsPage.class.getName();

        private static final long serialVersionUID = 6012279465073443753L;

        private static final double MILLIMETERS_PER_INCH = 2.54;

        private static Preferences prefs = Preferences.userRoot().node( "gvsig.configuration.screen" );

        private ImageIcon icon;

        private JPanel pTestMeasure;

        private JTextField txtResolution;

        private JTextField txtMeasure;

        private JComboBox cmbUnits;

        private JButton btnRefresh;

    public ScreenSettingsPage() {

        super();

        setParentID(GeneralPage.id);

        icon=PluginServices.getIconTheme().get("edit-setup-screensetting");

        addComponent(PluginServices.getText(this, "resolution") + ":",

                            txtResolution = new JTextField("", 15));

        pTestMeasure = new TestMeasurePanel();

        addComponent(pTestMeasure);

        addComponent(new JLabel(PluginServices.getText(this,"the_length_of_the_line_above_is")+":"));

        cmbUnits=new JComboBox();

        cmbUnits.addItem(PluginServices.getText(this,"centimeters"));

        cmbUnits.addItem(PluginServices.getText(this,"inches"));

        cmbUnits.addActionListener(new ActionListener() {

                        public void actionPerformed(ActionEvent arg0) {

                                /*double d=Double.parseDouble(txtMeasure.getText().replace(',','.'));

                                if (cmbUnits.getSelectedIndex()==0) {

                                        txtResolution.setText(String.valueOf((int)((210*MILLIMETERS_PER_INCH)/d)));

                                }else {

                                        txtResolution.setText(String.valueOf((int)(210/d)));

                                }

*/

                        }

        });

        txtMeasure=new JTextField();

        addComponent(txtMeasure,cmbUnits);

        addComponent(new JBlank(1,1));

        btnRefresh=new JButton(PluginServices.getText(this,"button.resolution.calculate"));

        btnRefresh.addActionListener(new ActionListener() {

                        public void actionPerformed(ActionEvent arg0) {

                                double d=Double.parseDouble(txtMeasure.getText().replace(',','.'));

                                if (cmbUnits.getSelectedIndex()==0) {

                                        txtResolution.setText(String.valueOf((int)((210*MILLIMETERS_PER_INCH)/d)));

                                }else {

                                        txtResolution.setText(String.valueOf((int)(210/d)));

                                }

                        }

        });

        addComponent(btnRefresh);

        initialize();

    }

    private class TestMeasurePanel extends JPanel{

                private static final long serialVersionUID = -8307475893309753439L;

                public TestMeasurePanel() {

                    setPreferredSize(new Dimension(250,60));

            Border border=BorderFactory.createTitledBorder(

                            PluginServices.getText(this, "test_measure"));

            setBorder(border);

            }

                protected void paintComponent(Graphics g) {

                        super.paintComponent(g);

                        ((Graphics2D)g).setStroke(new BasicStroke(2));

                        g.setColor(Color.black);

                        g.drawLine(20,30,230,30);

                        g.drawLine(20,20,20,40);

                        g.drawLine(230,20,230,40);

                }

    }

    private void initialize() {

//        this.setSize(394, 248);

    }

    public void storeValues() throws StoreException {

       int dpi=Integer.parseInt(txtResolution.getText());

       prefs.putInt("dpi",dpi);

    }

    public void setChangesApplied() {

            setChanged(false);

    }

    public String getID() {

            return id;

    }

    public String getTitle() {

            return PluginServices.getText(this, "options.configuration.screen");

    }

    public JPanel getPanel() {

       return this;

    }

    public void initializeValues() {

            Toolkit kit = Toolkit.getDefaultToolkit();

            double dpi = kit.getScreenResolution();

            int resDPI=prefs.getInt("dpi",(int)dpi);

                txtResolution.setText(String.valueOf(resDPI));

                txtMeasure.setText(String.valueOf(format(210*MILLIMETERS_PER_INCH/resDPI)));

                cmbUnits.setSelectedIndex(0);

        }

    public void initializeDefaults() {

            Toolkit kit = Toolkit.getDefaultToolkit();

                int dpi = kit.getScreenResolution();

                txtResolution.setText(String.valueOf(dpi));

                txtMeasure.setText(String.valueOf(format(210*MILLIMETERS_PER_INCH/dpi)));

                cmbUnits.setSelectedIndex(0);

    }

    public ImageIcon getIcon() {

        return icon;

    }

    public boolean isValueChanged() {

            return super.hasChanged();

    }

    private String format(double d) {

        NumberFormat nf = NumberFormat.getInstance();

        if ((d % (long) d) != 0) {

            nf.setMaximumFractionDigits(2);

        } else {

            nf.setMaximumFractionDigits(0);

        }

        return nf.format(d); //(Double.valueOf(s).doubleValue());

    }

}  //  @jve:decl-index=0:visual-constraint="10,10"