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Регистрация: 7.6.2004
Где: Lille, France
Репутация: 4
Всего: 5
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Посмотри здесь, может что-то для себя найдешь... | Код |
import java.awt.*;
import java.awt.event.*;
import java.awt.font.*;
import java.awt.geom.*;
import java.awt.print.*;
import java.util.*;
import javax.print.*;
import javax.print.attribute.*;
import javax.swing.*;
/**
This program demonstrates the printing of a multi-page
book. It prints a "banner", by blowing up a text string
to fill the entire page vertically. The program also
contains a generic print preview dialog.
*/
public class BookTest
{
public static void main(String[] args)
{
JFrame frame = new BookTestFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.show();
}
}
/**
This frame has a text field for the banner text and
buttons for printing, page setup, and print preview.
*/
class BookTestFrame extends JFrame
{
public BookTestFrame()
{
setTitle("BookTest");
setSize(WIDTH, HEIGHT);
Container contentPane = getContentPane();
text = new JTextField();
contentPane.add(text, BorderLayout.NORTH);
attributes = new HashPrintRequestAttributeSet();
JPanel buttonPanel = new JPanel();
JButton printButton = new JButton("Print");
buttonPanel.add(printButton);
printButton.addActionListener(new
ActionListener()
{
public void actionPerformed(ActionEvent event)
{
try
{
PrinterJob job = PrinterJob.getPrinterJob();
job.setPageable(makeBook());
if (job.printDialog(attributes))
{
job.print(attributes);
}
}
catch (PrinterException exception)
{
JOptionPane.showMessageDialog(
BookTestFrame.this, exception);
}
}
});
JButton pageSetupButton = new JButton("Page setup");
buttonPanel.add(pageSetupButton);
pageSetupButton.addActionListener(new
ActionListener()
{
public void actionPerformed(ActionEvent event)
{
PrinterJob job = PrinterJob.getPrinterJob();
pageFormat = job.pageDialog(attributes);
}
});
JButton printPreviewButton = new JButton("Print preview");
buttonPanel.add(printPreviewButton);
printPreviewButton.addActionListener(new
ActionListener()
{
public void actionPerformed(ActionEvent event)
{
PrintPreviewDialog dialog
= new PrintPreviewDialog(makeBook());
dialog.show();
}
});
contentPane.add(buttonPanel, BorderLayout.SOUTH);
}
/**
Makes a book that contains a cover page and the
pages for the banner.
*/
public Book makeBook()
{
if (pageFormat == null)
{
PrinterJob job = PrinterJob.getPrinterJob();
pageFormat = job.defaultPage();
}
Book book = new Book();
String message = text.getText();
Banner banner = new Banner(message);
int pageCount
= banner.getPageCount((Graphics2D)getGraphics(),
pageFormat);
book.append(new CoverPage(message + " (" + pageCount
+ " pages)"), pageFormat);
book.append(banner, pageFormat, pageCount);
return book;
}
private JTextField text;
private PageFormat pageFormat;
private PrintRequestAttributeSet attributes;
private static final int WIDTH = 300;
private static final int HEIGHT = 100;
}
/**
A banner that prints a text string on multiple pages.
*/
class Banner implements Printable
{
/**
Constructs a banner
@param m the message string
*/
public Banner(String m)
{
message = m;
}
/**
Gets the page count of this section.
@param g2 the graphics context
@param pf the page format
@return the number of pages needed
*/
public int getPageCount(Graphics2D g2, PageFormat pf)
{
if (message.equals("")) return 0;
FontRenderContext context = g2.getFontRenderContext();
Font f = new Font("Serif", Font.PLAIN, 72);
Rectangle2D bounds = f.getStringBounds(message, context);
scale = pf.getImageableHeight() / bounds.getHeight();
double width = scale * bounds.getWidth();
int pages = (int)Math.ceil(width / pf.getImageableWidth());
return pages;
}
public int print(Graphics g, PageFormat pf, int page)
throws PrinterException
{
Graphics2D g2 = (Graphics2D)g;
if (page > getPageCount(g2, pf))
return Printable.NO_SUCH_PAGE;
g2.translate(pf.getImageableX(), pf.getImageableY());
drawPage(g2, pf, page);
return Printable.PAGE_EXISTS;
}
public void drawPage(Graphics2D g2, PageFormat pf, int page)
{
if (message.equals("")) return;
page--; // account for cover page
drawCropMarks(g2, pf);
g2.clip(new Rectangle2D.Double(0, 0,
pf.getImageableWidth(), pf.getImageableHeight()));
g2.translate(-page * pf.getImageableWidth(), 0);
g2.scale(scale, scale);
FontRenderContext context = g2.getFontRenderContext();
Font f = new Font("Serif", Font.PLAIN, 72);
TextLayout layout = new TextLayout(message, f, context);
AffineTransform transform
= AffineTransform.getTranslateInstance(0,
layout.getAscent());
Shape outline = layout.getOutline(transform);
g2.draw(outline);
}
/**
Draws 1/2" crop marks in the corners of the page.
@param g2 the graphics context
@param pf the page format
*/
public void drawCropMarks(Graphics2D g2, PageFormat pf)
{
final double C = 36; // crop mark length = 1/2 inch
double w = pf.getImageableWidth();
double h = pf.getImageableHeight();
g2.draw(new Line2D.Double(0, 0, 0, C));
g2.draw(new Line2D.Double(0, 0, C, 0));
g2.draw(new Line2D.Double(w, 0, w, C));
g2.draw(new Line2D.Double(w, 0, w - C, 0));
g2.draw(new Line2D.Double(0, h, 0, h - C));
g2.draw(new Line2D.Double(0, h, C, h));
g2.draw(new Line2D.Double(w, h, w, h - C));
g2.draw(new Line2D.Double(w, h, w - C, h));
}
private String message;
private double scale;
}
/**
This class prints a cover page with a title.
*/
class CoverPage implements Printable
{
/**
Constructs a cover page.
@param t the title
*/
public CoverPage(String t)
{
title = t;
}
public int print(Graphics g, PageFormat pf, int page)
throws PrinterException
{
if (page >= 1) return Printable.NO_SUCH_PAGE;
Graphics2D g2 = (Graphics2D)g;
g2.setPaint(Color.black);
g2.translate(pf.getImageableX(), pf.getImageableY());
FontRenderContext context = g2.getFontRenderContext();
Font f = g2.getFont();
TextLayout layout = new TextLayout(title, f, context);
float ascent = layout.getAscent();
g2.drawString(title, 0, ascent);
return Printable.PAGE_EXISTS;
}
private String title;
}
/**
This class implements a generic print preview dialog.
*/
class PrintPreviewDialog extends JDialog
{
/**
Constructs a print preview dialog.
@param p a Printable
@param pf the page format
@param pages the number of pages in p
*/
public PrintPreviewDialog(Printable p, PageFormat pf,
int pages)
{
Book book = new Book();
book.append(p, pf, pages);
layoutUI(book);
}
/**
Constructs a print preview dialog.
@param b a Book
*/
public PrintPreviewDialog(Book b)
{
layoutUI(b);
}
/**
Lays out the UI of the dialog.
@param book the book to be previewed
*/
public void layoutUI(Book book)
{
setSize(WIDTH, HEIGHT);
Container contentPane = getContentPane();
canvas = new PrintPreviewCanvas(book);
contentPane.add(canvas, BorderLayout.CENTER);
JPanel buttonPanel = new JPanel();
JButton nextButton = new JButton("Next");
buttonPanel.add(nextButton);
nextButton.addActionListener(new
ActionListener()
{
public void actionPerformed(ActionEvent event)
{
canvas.flipPage(1);
}
});
JButton previousButton = new JButton("Previous");
buttonPanel.add(previousButton);
previousButton.addActionListener(new
ActionListener()
{
public void actionPerformed(ActionEvent event)
{
canvas.flipPage(-1);
}
});
JButton closeButton = new JButton("Close");
buttonPanel.add(closeButton);
closeButton.addActionListener(new
ActionListener()
{
public void actionPerformed(ActionEvent event)
{
setVisible(false);
}
});
contentPane.add(buttonPanel, BorderLayout.SOUTH);
}
private PrintPreviewCanvas canvas;
private static final int WIDTH = 300;
private static final int HEIGHT = 300;
}
/**
The canvas for displaying the print preview.
*/
class PrintPreviewCanvas extends JPanel
{
/**
Constructs a print preview canvas.
@param b the book to be previewed
*/
public PrintPreviewCanvas(Book b)
{
book = b;
currentPage = 0;
}
public void paintComponent(Graphics g)
{
super.paintComponent(g);
Graphics2D g2 = (Graphics2D)g;
PageFormat pageFormat = book.getPageFormat(currentPage);
double xoff; // x offset of page start in window
double yoff; // y offset of page start in window
double scale; // scale factor to fit page in window
double px = pageFormat.getWidth();
double py = pageFormat.getHeight();
double sx = getWidth() - 1;
double sy = getHeight() - 1;
if (px / py < sx / sy) // center horizontally
{
scale = sy / py;
xoff = 0.5 * (sx - scale * px);
yoff = 0;
}
else // center vertically
{
scale = sx / px;
xoff = 0;
yoff = 0.5 * (sy - scale * py);
}
g2.translate((float)xoff, (float)yoff);
g2.scale((float)scale, (float)scale);
// draw page outline (ignoring margins)
Rectangle2D page = new Rectangle2D.Double(0, 0, px, py);
g2.setPaint(Color.white);
g2.fill(page);
g2.setPaint(Color.black);
g2.draw(page);
Printable printable = book.getPrintable(currentPage);
try
{
printable.print(g2, pageFormat, currentPage);
}
catch (PrinterException exception)
{
g2.draw(new Line2D.Double(0, 0, px, py));
g2.draw(new Line2D.Double(0, px, 0, py));
}
}
/**
Flip the book by the given number of pages.
@param by the number of pages to flip by. Negative
values flip backwards.
*/
public void flipPage(int by)
{
int newPage = currentPage + by;
if (0 <= newPage && newPage < book.getNumberOfPages())
{
currentPage = newPage;
repaint();
}
}
private Book book;
private int currentPage;
}
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Большинство наших ошибок происходит из-за невнимательности. |
Как вывести на печать? 
Дата 20.6.2004, 14:06 (
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