tiffdialog.java

Java生成PDF Java生成PDF Java生成PDF

// $Id: TiffDialog.java,v 1.13 2006/08/03 13:02:15 mike Exp $

package org.faceless.pdf2.viewer;

import org.faceless.pdf2.PDFParser;
import java.awt.Dimension;
import java.awt.Frame;
import java.awt.GridBagConstraints;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.image.ColorModel;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;

import javax.swing.InputVerifier;
import javax.swing.JComboBox;
import javax.swing.JComponent;
import javax.swing.JFileChooser;
import javax.swing.JOptionPane;

/**
 * Dialog to get details for the "Save As TIFF" option
 *
 * <p><i>
 * This code is copyright the Big Faceless Organization. You're welcome to
 * use, modify and distribute it in any form in your own projects, provided
 * those projects continue to make use of the Big Faceless PDF library.
 * </i></p>
 */
class TiffDialog extends java.awt.Dialog
{
    /**
     * Creates new form TiffDialog
     */
    public TiffDialog(java.awt.Frame parent, final PDFViewport vp, boolean modal) {
        super(parent, modal);
        this.vp = vp;
        this.frame = parent;
        java.awt.GridBagConstraints gridBagConstraints;

        propPanel = new javax.swing.JPanel();
        lblCm = new javax.swing.JLabel();
        lblDpi = new javax.swing.JLabel();

        String[] cs = { "Device RGB", "Device Gray", "Black & White"};

        cbColorSpace = new javax.swing.JComboBox(cs);
        cbColorSpace.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {

                final JComboBox cb = (JComboBox) evt.getSource();
                String name = (String) cb.getSelectedItem();

                if (name.equals("Device RGB")) {
                    cm = ColorModel.getRGBdefault();
                } else if (name.equals("Device Gray")) {
                    cm = PDFParser.GRAYSCALE;
                } else if (name.equals("Black & White")) {
                    cm = PDFParser.BLACKANDWHITE;
                } // else if (name.equals("Device CMYK")) {
                  //  System.out.println("NOT SUPPORTED");
                  // }
            }
        });

        txtdpi = new javax.swing.JFormattedTextField();
        txtdpi.setText("72");
        txtdpi.addKeyListener(new KeyAdapter() {
            public void keyPressed(KeyEvent e) {
                if (e.getKeyCode() == KeyEvent.VK_ENTER) {
                    validateDPI();
                    saveAsTIFF();
                }
            }
        });

        txtdpi.setInputVerifier(new InputVerifier() {
            public boolean verify(JComponent input) {
                return validateDPI();
            }
        });


        btnSave = new javax.swing.JButton();
        btnSave.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent evt) {
                saveAsTIFF();
            }
        });

        btnCancel = new javax.swing.JButton();
        btnCancel.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent evt) {
                dispose();
            }
        });

        setLayout(new java.awt.GridBagLayout());

        setSize(new Dimension(200,155));
        setBackground(new java.awt.Color(224, 223, 227));
        setModal(true);
        setResizable(false);
        setTitle("PDF to Tiff");
        addWindowListener(new java.awt.event.WindowAdapter() {
            public void windowClosing(java.awt.event.WindowEvent evt) {
                closeDialog(evt);
            }
        });

        propPanel.setLayout(new java.awt.GridBagLayout());

        propPanel.setBorder(new javax.swing.border.TitledBorder("Options"));
        lblCm.setText("Color Model:");
        lblCm.setVerticalAlignment(javax.swing.SwingConstants.TOP);
        gridBagConstraints = new java.awt.GridBagConstraints();
        gridBagConstraints.gridx = 0;
        gridBagConstraints.gridy = 0;
        gridBagConstraints.anchor = java.awt.GridBagConstraints.NORTHWEST;
        gridBagConstraints.weighty = 1.0;
        gridBagConstraints.insets = new java.awt.Insets(10, 10, 0, 0);
        propPanel.add(lblCm, gridBagConstraints);

        lblDpi.setText("DPI:");
        lblDpi.setVerticalAlignment(javax.swing.SwingConstants.TOP);
        gridBagConstraints = new java.awt.GridBagConstraints();
        gridBagConstraints.gridx = 0;
        gridBagConstraints.gridy = 0;
        gridBagConstraints.ipadx = 38;
        gridBagConstraints.anchor = java.awt.GridBagConstraints.NORTHWEST;
        gridBagConstraints.insets = new java.awt.Insets(45, 10, 0, 0);
        propPanel.add(lblDpi, gridBagConstraints);

        gridBagConstraints = new java.awt.GridBagConstraints();
        gridBagConstraints.ipadx = 20;
        gridBagConstraints.ipady = 5;
        gridBagConstraints.anchor = java.awt.GridBagConstraints.NORTHWEST;
        gridBagConstraints.weightx = 1.0;
        gridBagConstraints.weighty = 1.0;
        gridBagConstraints.insets = new java.awt.Insets(5, 10, 0, 0);
        propPanel.add(cbColorSpace, gridBagConstraints);

        gridBagConstraints = new java.awt.GridBagConstraints();
        gridBagConstraints.gridx = 1;
        gridBagConstraints.gridy = 0;
        gridBagConstraints.ipadx = 25;
        gridBagConstraints.anchor = java.awt.GridBagConstraints.NORTHWEST;
        gridBagConstraints.insets = new java.awt.Insets(40, 10, 0, 0);
        propPanel.add(txtdpi, gridBagConstraints);

        gridBagConstraints = new java.awt.GridBagConstraints();
        gridBagConstraints.gridx = 0;
        gridBagConstraints.gridy = 0;
        gridBagConstraints.weightx = 1.0;
        gridBagConstraints.gridwidth = 2;
        gridBagConstraints.anchor = java.awt.GridBagConstraints.NORTHWEST;
        gridBagConstraints.insets = new java.awt.Insets(3, 3, 3, 3);
        add(propPanel, gridBagConstraints);

        btnSave.setText("Save as...");
        gridBagConstraints = new java.awt.GridBagConstraints();
        gridBagConstraints.gridx = 0;
        gridBagConstraints.gridy = 1;
        gridBagConstraints.anchor = java.awt.GridBagConstraints.WEST;
        gridBagConstraints.ipady = 25;
        gridBagConstraints.weightx = 0.3;
        gridBagConstraints.weighty = 1.0;
        gridBagConstraints.fill = GridBagConstraints.HORIZONTAL;
        gridBagConstraints.insets = new java.awt.Insets(2, 3, 3, 3);
        add(btnSave, gridBagConstraints);

        btnCancel.setText("Cancel");
        gridBagConstraints = new java.awt.GridBagConstraints();
        gridBagConstraints.gridx = 1;
        gridBagConstraints.gridy = 1;
        gridBagConstraints.anchor = java.awt.GridBagConstraints.EAST;
        gridBagConstraints.ipady = 25;
        gridBagConstraints.weightx = 0.7;
        gridBagConstraints.weighty = 1.0;
        gridBagConstraints.fill = GridBagConstraints.HORIZONTAL;
        gridBagConstraints.insets = new java.awt.Insets(2, 2, 3, 3);
        add(btnCancel, gridBagConstraints);

        setLocationRelativeTo(parent);
        setVisible(true);
        pack();
    }

    /** Closes the dialog */
    private void closeDialog(java.awt.event.WindowEvent evt) {
        setVisible(false);
        dispose();
    }

    private void saveAsTIFF() {
        JFileChooser chooser = new JFileChooser();
        int returnVal = chooser.showSaveDialog(frame);
        if (returnVal == JFileChooser.APPROVE_OPTION) {
            final File file = chooser.getSelectedFile();
            try {
                dispose();
                vp.writeAsTIFF(new FileOutputStream(file), dpi,cm);
            } catch (FileNotFoundException e) {
                ErrorInfo.displayThrowable(e, "File Not Found Error", this);
            }
        }
    }

    /**
     * checks that the dpi is valid
     */
    private boolean validateDPI() {
        boolean valid = true;
        try {
            String s = txtdpi.getText();
            s = s.trim();
            dpi = Integer.parseInt(s);
            if (dpi<1 || dpi>300) throw new Exception();
        } catch (Exception x) {
            valid = false;
            txtdpi.setText("72");
            JOptionPane.showMessageDialog(frame, "Invalid DPI, please enter a number between 1 and 300.", "BFO ERROR", JOptionPane.ERROR_MESSAGE);
            txtdpi.selectAll();
        }
        return valid;
    }

    // Variables declaration
    private int dpi = 72;
    private ColorModel cm = ColorModel.getRGBdefault();
    private final Frame frame;
    private PDFViewport vp;

    private javax.swing.JButton btnSave;
    private javax.swing.JButton btnCancel;
    private javax.swing.JComboBox cbColorSpace;
    private javax.swing.JFormattedTextField txtdpi;
    private javax.swing.JLabel lblCm;
    private javax.swing.JLabel lblDpi;
    private javax.swing.JPanel propPanel;
}