MainClass.java Source code

Introduction

Here is the source code for MainClass.java

Source

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.Insets;
import java.awt.Rectangle;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.geom.AffineTransform;
import java.io.FileOutputStream;

import javax.swing.Action;
import javax.swing.JButton;
import javax.swing.JEditorPane;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextPane;
import javax.swing.text.MutableAttributeSet;
import javax.swing.text.SimpleAttributeSet;
import javax.swing.text.StyleConstants;
import javax.swing.text.StyledEditorKit;

import com.lowagie.text.Document;
import com.lowagie.text.pdf.DefaultFontMapper;
import com.lowagie.text.pdf.PdfContentByte;
import com.lowagie.text.pdf.PdfWriter;

public class MainClass {

    int inch = Toolkit.getDefaultToolkit().getScreenResolution();

    float pixelToPoint = (float) 72 / (float) inch;

    JTextPane textPane;

    public MainClass() {
        JFrame frame = new JFrame();
        textPane = new JTextPane();
        JScrollPane scrollPane = new JScrollPane(textPane);

        JPanel north = new JPanel();
        JButton print = new JButton("Print");
        print.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent ae) {
                paintToPDF(textPane);
            }
        });
        JMenuBar menu = new JMenuBar();
        JMenu styleMenu = new JMenu();
        styleMenu.setText("Style");

        Action boldAction = new BoldAction();
        boldAction.putValue(Action.NAME, "Bold");
        styleMenu.add(boldAction);

        Action italicAction = new ItalicAction();
        italicAction.putValue(Action.NAME, "Italic");
        styleMenu.add(italicAction);

        menu.add(styleMenu);

        north.add(menu);
        north.add(print);
        frame.getContentPane().setLayout(new BorderLayout());
        frame.getContentPane().add(north, BorderLayout.NORTH);
        frame.getContentPane().add(scrollPane, BorderLayout.CENTER);
        frame.setSize(800, 500);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setVisible(true);
    }

    public static void main(String[] args) {
        new MainClass();
    }

    public void paintToPDF(JTextPane ta) {
        try {
            ta.setBounds(0, 0, (int) convertToPixels(612 - 58), (int) convertToPixels(792 - 60));

            Document document = new Document();
            FileOutputStream fos = new FileOutputStream("2.pdf");
            PdfWriter writer = PdfWriter.getInstance(document, fos);

            document.setPageSize(new com.lowagie.text.Rectangle(612, 792));
            document.open();
            PdfContentByte cb = writer.getDirectContent();

            cb.saveState();
            cb.concatCTM(1, 0, 0, 1, 0, 0);

            DefaultFontMapper mapper = new DefaultFontMapper();
            mapper.insertDirectory("c:/windows/fonts");

            Graphics2D g2 = cb.createGraphics(612, 792, mapper, true, .95f);

            AffineTransform at = new AffineTransform();
            at.translate(convertToPixels(20), convertToPixels(20));
            at.scale(pixelToPoint, pixelToPoint);

            g2.transform(at);

            g2.setColor(Color.WHITE);
            g2.fill(ta.getBounds());

            Rectangle alloc = getVisibleEditorRect(ta);
            ta.getUI().getRootView(ta).paint(g2, alloc);

            g2.setColor(Color.BLACK);
            g2.draw(ta.getBounds());

            g2.dispose();
            cb.restoreState();
            document.close();
            fos.flush();
            fos.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public float convertToPoints(int pixels) {
        return (float) (pixels * pixelToPoint);
    }

    public float convertToPixels(int points) {
        return (float) (points / pixelToPoint);
    }

    protected Rectangle getVisibleEditorRect(JTextPane ta) {
        Rectangle alloc = ta.getBounds();
        if ((alloc.width > 0) && (alloc.height > 0)) {
            alloc.x = alloc.y = 0;
            Insets insets = ta.getInsets();
            alloc.x += insets.left;
            alloc.y += insets.top;
            alloc.width -= insets.left + insets.right;
            alloc.height -= insets.top + insets.bottom;
            return alloc;
        }
        return null;
    }

}

class BoldAction extends StyledEditorKit.StyledTextAction {
    private static final long serialVersionUID = 9174670038684056758L;

    public BoldAction() {
        super("font-bold");
    }

    public String toString() {
        return "Bold";
    }

    public void actionPerformed(ActionEvent e) {
        JEditorPane editor = getEditor(e);
        if (editor != null) {
            StyledEditorKit kit = getStyledEditorKit(editor);
            MutableAttributeSet attr = kit.getInputAttributes();
            boolean bold = (StyleConstants.isBold(attr)) ? false : true;
            SimpleAttributeSet sas = new SimpleAttributeSet();
            StyleConstants.setBold(sas, bold);
            setCharacterAttributes(editor, sas, false);

        }
    }
}

class ItalicAction extends StyledEditorKit.StyledTextAction {

    private static final long serialVersionUID = -1428340091100055456L;

    public ItalicAction() {
        super("font-italic");
    }

    public String toString() {
        return "Italic";
    }

    public void actionPerformed(ActionEvent e) {
        JEditorPane editor = getEditor(e);
        if (editor != null) {
            StyledEditorKit kit = getStyledEditorKit(editor);
            MutableAttributeSet attr = kit.getInputAttributes();
            boolean italic = (StyleConstants.isItalic(attr)) ? false : true;
            SimpleAttributeSet sas = new SimpleAttributeSet();
            StyleConstants.setItalic(sas, italic);
            setCharacterAttributes(editor, sas, false);
        }
    }
}