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The Waikato Environment for Knowledge Analysis (WEKA), a machine learning workbench. This version represents the developer version, the "bleeding edge" of development, you could say. New functionality gets added to this version.

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/*
 * DocumentPrinting.java (original classname: PrintMe)
 * (C) Jan Michael Soan (http://it.toolbox.com/wiki/index.php/How_to_print_in_Java)
 * (C) 2009 University of Waikato, Hamilton NewZealand
 */

package weka.gui;

import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Rectangle;
import java.awt.Shape;
import java.awt.print.PageFormat;
import java.awt.print.Printable;
import java.awt.print.PrinterException;
import java.awt.print.PrinterJob;

import javax.swing.JTextPane;
import javax.swing.text.Document;
import javax.swing.text.View;

/**
 * DocumentPrinting is a class that lets you print documents on
 * the fly for free ;) Printing in JDK 1.2 - 1.5 is hard.
 * With this, you just simply call it in your application
 * and add your text component like JTextPane:
 * 
 * new DocumentPrinting().print(YourJTextComponent);
 * 
* Reminder: Just make sure there is a text on your component ;P *
 * Author : Jan Michael Soan
 * WebSite: http://www.jmsoan.com
 * Date   : 04/17/2004 
 * Time   : 2:20 PM 
 * 
* * Found on Toolbox * (Terms of Use). * * @author Jan Michael Soan (original code) * @author FracPete (fracpete at waikato dot ac dot nz) */ public class DocumentPrinting implements Printable { /** the current page. */ protected int m_CurrentPage = -1; /** the JTextPane which content is to be printed. */ protected JTextPane m_PrintPane; /** the page end. */ protected double m_PageEndY = 0; /** the page start. */ protected double m_PageStartY = 0; /** whether to scale the width to fit. */ protected boolean m_ScaleWidthToFit = true; /** the pageformat. */ protected PageFormat m_PageFormat; /** the printer job. */ protected PrinterJob m_PrinterJob; /** * Initializes the printing. */ public DocumentPrinting() { m_PrintPane = new JTextPane(); m_PageFormat = new PageFormat(); m_PrinterJob = PrinterJob.getPrinterJob(); } /** * Brings up the page dialog. */ protected void pageDialog() { m_PageFormat = m_PrinterJob.pageDialog(m_PageFormat); } /** * Prints the page. * * @param graphics the graphics context * @param pageFormat the format of the page * @param pageIndex the page index * @return either NO_SUCH_PAGE or PAGE_EXISTS * @see Printable#NO_SUCH_PAGE * @see Printable#PAGE_EXISTS */ public int print(Graphics graphics, PageFormat pageFormat, int pageIndex) { double scale = 1.0; Graphics2D graphics2D; View rootView; graphics2D = (Graphics2D) graphics; m_PrintPane.setSize((int) pageFormat.getImageableWidth(),Integer.MAX_VALUE); m_PrintPane.validate(); rootView = m_PrintPane.getUI().getRootView(m_PrintPane); if ((m_ScaleWidthToFit) && (m_PrintPane.getMinimumSize().getWidth() > pageFormat.getImageableWidth())) { scale = pageFormat.getImageableWidth()/ m_PrintPane.getMinimumSize().getWidth(); graphics2D.scale(scale,scale); } graphics2D.setClip( (int) (pageFormat.getImageableX()/scale), (int) (pageFormat.getImageableY()/scale), (int) (pageFormat.getImageableWidth()/scale), (int) (pageFormat.getImageableHeight()/scale)); if (pageIndex > m_CurrentPage) { m_CurrentPage = pageIndex; m_PageStartY += m_PageEndY; m_PageEndY = graphics2D.getClipBounds().getHeight(); } graphics2D.translate( graphics2D.getClipBounds().getX(), graphics2D.getClipBounds().getY()); Rectangle allocation = new Rectangle( 0, (int) -m_PageStartY, (int) (m_PrintPane.getMinimumSize().getWidth()), (int) (m_PrintPane.getPreferredSize().getHeight())); if (printView(graphics2D,allocation,rootView)) { return Printable.PAGE_EXISTS; } else { m_PageStartY = 0; m_PageEndY = 0; m_CurrentPage = -1; return Printable.NO_SUCH_PAGE; } } /** * Prints the document in the JTextPane. * * @param pane the document to print */ public void print(JTextPane pane) { setDocument(pane); printDialog(); } /** * Shows the print dialog. */ public void printDialog() { if (m_PrinterJob.printDialog()) { m_PrinterJob.setPrintable(this,m_PageFormat); try { m_PrinterJob.print(); } catch (PrinterException printerException) { m_PageStartY = 0; m_PageEndY = 0; m_CurrentPage = -1; System.out.println("Error Printing Document"); } } } /** * Shows a print view. * * @param graphics2D the graphics context * @param allocation the allocation * @param view the view * @return true if the page exists */ protected boolean printView(Graphics2D graphics2D, Shape allocation, View view) { boolean pageExists = false; Rectangle clipRectangle = graphics2D.getClipBounds(); Shape childAllocation; View childView; if (view.getViewCount() > 0) { for (int i = 0; i < view.getViewCount(); i++) { childAllocation = view.getChildAllocation(i,allocation); if (childAllocation != null) { childView = view.getView(i); if (printView(graphics2D,childAllocation,childView)) { pageExists = true; } } } } else { if (allocation.getBounds().getMaxY() >= clipRectangle.getY()) { pageExists = true; if ((allocation.getBounds().getHeight() > clipRectangle.getHeight()) && (allocation.intersects(clipRectangle))) { view.paint(graphics2D,allocation); } else { if (allocation.getBounds().getY() >= clipRectangle.getY()) { if (allocation.getBounds().getMaxY() <= clipRectangle.getMaxY()) { view.paint(graphics2D,allocation); } else { if (allocation.getBounds().getY() < m_PageEndY) { m_PageEndY = allocation.getBounds().getY(); } } } } } } return pageExists; } /** * Sets the content type. * * @param type the content type */ public void setContentType(String type) { m_PrintPane.setContentType(type); } /** * Returns the document to print. * * @return the document or null */ public Document getDocument() { if (m_PrintPane != null) return m_PrintPane.getDocument(); else return null; } /** * Sets the document from the given JTextPane. * * @param pane the JTextPane to get the document from */ public void setDocument(JTextPane pane) { m_PrintPane = new JTextPane(); setDocument(pane.getContentType(), pane.getDocument()); } /** * Sets the document and the according content type. * * @param type the content type * @param document the document to print */ public void setDocument(String type, Document document) { setContentType(type); m_PrintPane.setDocument(document); } /** * Sets whether to scale the width to fit. * * @param scaleWidth if true then the width will be scaled */ public void setScaleWidthToFit(boolean scaleWidth) { m_ScaleWidthToFit = scaleWidth; } /** * Returns whether the width is to be scaled. * * @return true if scaled */ public boolean getScaleWidthToFit() { return m_ScaleWidthToFit; } }




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