Application: gvSIG desktop

/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright (C) 2007-2013 gvSIG Association.

 *

 * 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 3

 * 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., 51 Franklin Street, Fifth Floor, Boston,

 * MA  02110-1301, USA.

 *

 * For any additional information, do not hesitate to contact us

 * at info AT gvsig.com, or visit our website www.gvsig.com.

 */

package org.gvsig.app.project.documents.gui;

import java.awt.BorderLayout;

import java.awt.Component;

import java.awt.Container;

import java.awt.Dimension;

import java.awt.FlowLayout;

import java.awt.Toolkit;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.print.PageFormat;

import java.awt.print.Paper;

import java.awt.print.PrinterException;

import java.awt.print.PrinterJob;

import java.beans.PropertyChangeEvent;

import java.beans.PropertyChangeListener;

import java.net.URL;

import javax.print.attribute.HashPrintRequestAttributeSet;

import javax.print.attribute.PrintRequestAttributeSet;

import javax.print.attribute.standard.PageRanges;

import javax.swing.ImageIcon;

import javax.swing.JButton;

import javax.swing.JLabel;

import javax.swing.JOptionPane;

import javax.swing.JPanel;

import javax.swing.JScrollPane;

import javax.swing.JTextField;

import org.jpedal.Display;

import org.jpedal.PdfDecoder;

import org.jpedal.exception.PdfException;

import org.jpedal.objects.PrinterOptions;

import org.gvsig.andami.PluginServices;

import org.gvsig.andami.ui.mdiManager.IWindow;

import org.gvsig.andami.ui.mdiManager.WindowInfo;

public class PDFViewerWindow extends JPanel implements IWindow,

    PropertyChangeListener {

    private static final long serialVersionUID = 4022263653761949704L;

    private WindowInfo m_viewInfo;

    private PdfDecoder pf;

    // private String viewerTitle="Visor PDF";

    private String currentFile = null;

    private int currentPage = 1;

    private final JLabel pageCounter1 = new JLabel(" "

        + PluginServices.getText(this, "Pagina") + " ");

    private JTextField pageCounter2 = new JTextField(4);

    private JLabel pageCounter3 =

        new JLabel(PluginServices.getText(this, "de"));

    public PDFViewerWindow(String currentFile) {

        super();

        initialize(currentFile);

    }

    private void initialize(String currentFile) {

        pf = new PdfDecoder();

        this.currentFile = currentFile;

        // currentFile = "C:\\Cartografia\\prueba.pdf";

        try {

            // this opens the PDF and reads its internal details

            pf.openPdfFile(currentFile);

            // these 2 lines opens page 1 at 100% scaling

            pf.decodePage(currentPage);

            float scaling = (float) 1.5;

            pf.setPageParameters(scaling, 1); // values scaling (1=100%). page

                                              // number

            pf.setDisplayView(Display.SINGLE_PAGE, Display.DISPLAY_CENTERED);

        } catch (Exception e) {

            e.printStackTrace();

        }

        // setup our GUI display

        initializeViewer();

        // set page number display

        pageCounter2.setText(currentPage + "");

        pageCounter3.setText(PluginServices.getText(this, "de") + " "

            + pf.getPageCount() + " ");

    }

    public void setCurrentFile(String currentFile) {

        this.currentFile = currentFile;

    }

    private void initializeViewer() {

        Container cPane = this;

        cPane.setLayout(new BorderLayout());

        // JButton open = initOpenBut();//setup open button

        Component[] itemsToAdd = initChangerPanel();// setup page display and

                                                    // changer

        JPanel topBar = new JPanel();

        topBar.setLayout(new FlowLayout(FlowLayout.CENTER, 0, 0));

        // topBar.add(pageChanger);

        for (int i = 0; i < itemsToAdd.length; i++) {

            topBar.add(itemsToAdd[i]);

        }

        cPane.add(topBar, BorderLayout.NORTH);

        JScrollPane display = getJPaneViewer();// setup scrollpane with pdf

                                               // display inside

        cPane.add(display, BorderLayout.CENTER);

        // pack();

        Dimension screen = Toolkit.getDefaultToolkit().getScreenSize();

        setSize(screen.width / 2, screen.height / 2);

        // <start-13>

        // setLocationRelativeTo(null);//centre on screen

        // <end-13>

        setVisible(true);

    }

    private Component[] initChangerPanel() {

        Component[] list = new Component[12];

        /** back to page 1 */

        JButton start = new JButton();

        start.setBorderPainted(false);

        URL startImage =

            getClass().getResource(

                "/org/jpedal/examples/simpleviewer/res/start.gif");

        start.setIcon(new ImageIcon(startImage));

        start.setToolTipText(PluginServices.getText(this, "primera_pagina"));

        // currentBar1.add(start);

        list[0] = start;

        start.addActionListener(new ActionListener() {

            public void actionPerformed(ActionEvent e) {

                if (currentFile != null && currentPage != 1) {

                    currentPage = 1;

                    try {

                        pf.decodePage(currentPage);

                        pf.invalidate();

                        repaint();

                    } catch (Exception e1) {

                        System.err.println("back to page 1");

                        e1.printStackTrace();

                    }

                    // set page number display

                    pageCounter2.setText(currentPage + "");

                }

            }

        });

        /** back 10 icon */

        JButton fback = new JButton();

        fback.setBorderPainted(false);

        URL fbackImage =

            getClass().getResource(

                "/org/jpedal/examples/simpleviewer/res/fback.gif");

        fback.setIcon(new ImageIcon(fbackImage));

        fback

            .setToolTipText(PluginServices.getText(this, "diez_paginas_atras"));

        // currentBar1.add(fback);

        list[1] = fback;

        fback.addActionListener(new ActionListener() {

            public void actionPerformed(ActionEvent e) {

                if (currentFile != null && currentPage > 10) {

                    currentPage -= 10;

                    try {

                        pf.decodePage(currentPage);

                        pf.invalidate();

                        repaint();

                    } catch (Exception e1) {

                        System.err.println("back 10 pages");

                        e1.printStackTrace();

                    }

                    // set page number display

                    pageCounter2.setText(currentPage + "");

                }

            }

        });

        /** back icon */

        JButton back = new JButton();

        back.setBorderPainted(false);

        URL backImage =

            getClass().getResource(

                "/org/jpedal/examples/simpleviewer/res/back.gif");

        back.setIcon(new ImageIcon(backImage));

        back.setToolTipText(PluginServices.getText(this, "pagina_atras"));

        // currentBar1.add(back);

        list[2] = back;

        back.addActionListener(new ActionListener() {

            public void actionPerformed(ActionEvent e) {

                if (currentFile != null && currentPage > 1) {

                    currentPage -= 1;

                    try {

                        pf.decodePage(currentPage);

                        pf.invalidate();

                        repaint();

                    } catch (Exception e1) {

                        System.err.println("back 1 page");

                        e1.printStackTrace();

                    }

                    // set page number display

                    pageCounter2.setText(currentPage + "");

                }

            }

        });

        pageCounter2.setEditable(true);

        pageCounter2.addActionListener(new ActionListener() {

            public void actionPerformed(ActionEvent a) {

                String value = pageCounter2.getText().trim();

                int newPage;

                // allow for bum values

                try {

                    newPage = Integer.parseInt(value);

                    if ((newPage > pf.getPageCount()) | (newPage < 1)) {

                        return;

                    }

                    currentPage = newPage;

                    try {

                        pf.decodePage(currentPage);

                        pf.invalidate();

                        repaint();

                    } catch (Exception e) {

                        System.err.println("page number entered");

                        e.printStackTrace();

                    }

                } catch (Exception e) {

                    JOptionPane.showMessageDialog(

                        null,

                        ">" + value + "< "

                            + PluginServices.getText(this, "valor_incorrecto")

                            + pf.getPageCount());

                }

            }

        });

        /** put page count in middle of forward and back */

        // currentBar1.add(pageCounter1);

        // currentBar1.add(new JPanel());//add gap

        // currentBar1.add(pageCounter2);

        // currentBar1.add(new JPanel());//add gap

        // currentBar1.add(pageCounter3);

        list[3] = pageCounter1;

        list[4] = new JPanel();

        list[5] = pageCounter2;

        list[6] = new JPanel();

        list[7] = pageCounter3;

        /** forward icon */

        JButton forward = new JButton();

        forward.setBorderPainted(false);

        URL fowardImage =

            getClass().getResource(

                "/org/jpedal/examples/simpleviewer/res/forward.gif");

        forward.setIcon(new ImageIcon(fowardImage));

        forward.setToolTipText(PluginServices.getText(this, "pagina_delante"));

        // currentBar1.add(forward);

        list[8] = forward;

        forward.addActionListener(new ActionListener() {

            public void actionPerformed(ActionEvent e) {

                if (currentFile != null && currentPage < pf.getPageCount()) {

                    currentPage += 1;

                    try {

                        pf.decodePage(currentPage);

                        pf.invalidate();

                        repaint();

                    } catch (Exception e1) {

                        System.err.println("forward 1 page");

                        e1.printStackTrace();

                    }

                    // set page number display

                    pageCounter2.setText(currentPage + "");

                }

            }

        });

        /** fast forward icon */

        JButton fforward = new JButton();

        fforward.setBorderPainted(false);

        URL ffowardImage =

            getClass().getResource(

                "/org/jpedal/examples/simpleviewer/res/fforward.gif");

        fforward.setIcon(new ImageIcon(ffowardImage));

        fforward.setToolTipText(PluginServices.getText(this,

            "10_paginas_delante"));

        // currentBar1.add(fforward);

        list[9] = fforward;

        fforward.addActionListener(new ActionListener() {

            public void actionPerformed(ActionEvent e) {

                if (currentFile != null && currentPage < pf.getPageCount() - 9) {

                    currentPage += 10;

                    try {

                        pf.decodePage(currentPage);

                        pf.invalidate();

                        repaint();

                    } catch (Exception e1) {

                        System.err.println("forward 10 pages");

                        e1.printStackTrace();

                    }

                    // set page number display

                    pageCounter2.setText(currentPage + "");

                }

            }

        });

        /** goto last page */

        JButton end = new JButton();

        end.setBorderPainted(false);

        URL endImage =

            getClass().getResource(

                "/org/jpedal/examples/simpleviewer/res/end.gif");

        end.setIcon(new ImageIcon(endImage));

        end.setToolTipText(PluginServices.getText(this, "ultima_pagina"));

        // currentBar1.add(end);

        list[10] = end;

        end.addActionListener(new ActionListener() {

            public void actionPerformed(ActionEvent e) {

                if (currentFile != null && currentPage < pf.getPageCount()) {

                    currentPage = pf.getPageCount();

                    try {

                        pf.decodePage(currentPage);

                        pf.invalidate();

                        repaint();

                    } catch (Exception e1) {

                        System.err.println("forward to last page");

                        e1.printStackTrace();

                    }

                    // set page number display

                    pageCounter2.setText(currentPage + "");

                }

            }

        });

        /** Print */

        JButton print = new JButton();

        print.setBorderPainted(false);

        URL printImage =

            getClass().getResource(

                "/org/jpedal/examples/simpleviewer/res/print.gif");

        print.setIcon(new ImageIcon(printImage));

        print.setToolTipText(PluginServices.getText(this, "imprimir"));

        // currentBar1.add(end);

        list[11] = print;

        print.addActionListener(new ActionListener() {

            public void actionPerformed(ActionEvent e) {

                printPDF();

            }

        });

        return list;

    }

    public void printPDF() {

        PrinterJob printJob = PrinterJob.getPrinterJob();

        printJob.setPageable(pf);

        // decode_pdf.setPageFormat(pf);

        /**

         * this additional functionality is available under printable interface

         */

        // setup default values to add into JPS

        PrintRequestAttributeSet aset = new HashPrintRequestAttributeSet();

        aset.add(new PageRanges(1, pf.getPageCount()));

        boolean printFile = printJob.printDialog(aset);

        // set page range

        PageRanges r = (PageRanges) aset.get(PageRanges.class);

        if (r != null) {

            try {

                PageFormat pformat = printJob.defaultPage();

                Paper paper = new Paper();

                paper.setSize(595, 842); // default A4

                paper.setImageableArea(43, 43, 545, 792); // actual print 'zone'

                pformat.setPaper(paper);

                // pageable provides a method getPageFormat(int p) - this method

                // allows it to be set by JPedal

                pf.setPageFormat(pformat);

                pf.setPagePrintRange(r);

            } catch (PdfException e) {

                // TODO Auto-generated catch block

                e.printStackTrace();

            }

        }

        /**

         * generic call to both Pageable and printable

         */

        if (printFile) {

            try {

                pf.setPrintPageScalingMode(PrinterOptions.PAGE_SCALING_FIT_TO_PRINTER_MARGINS);

                printJob.print();

            } catch (PrinterException e) {

                // TODO Auto-generated catch block

                e.printStackTrace();

            }

        }

    }

    private JScrollPane getJPaneViewer() {

        JScrollPane currentScroll = new JScrollPane();

        currentScroll

            .setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED);

        currentScroll

            .setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED);

        currentScroll.setViewportView(pf);

        return currentScroll;

    }

    public WindowInfo getWindowInfo() {

        if (m_viewInfo == null) {

            m_viewInfo = new WindowInfo(WindowInfo.PALETTE);

            m_viewInfo.setMaximizable(true);

            m_viewInfo.setWidth(this.getWidth());

            m_viewInfo.setHeight(this.getHeight());

            m_viewInfo.setTitle(PluginServices.getText(this, "pdf_viewer"));

        }

        return m_viewInfo;

    }

    public void propertyChange(PropertyChangeEvent arg0) {

        // TODO Auto-generated method stub

    }

    public Object getWindowProfile() {

        // TODO Auto-generated method stub

        return WindowInfo.TOOL_PROFILE;

    }

}