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freesoft_2000@yahoo.com · Guest

Hi everyone,

I am trying to print the contents of a JTextPane which contains five
pages of styled text and two embedded images. I am using the windows
native page format and print dialog. The entire content of the
JTextPane prints without flaws if i decide to print all the pages. The
thing is i cannot print certain range of pages or a single selected
page. I have been trying this for weeks now and i have
run out of solutions.

Maybe someone can take a look at my code and see what i am doing wrong.

I am listing here a mini test program together with the printable class
so you guys can compile the code and run it and see what i mean

Here is the code

import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.util.*;
import java.awt.print.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.text.*;
import javax.swing.plaf.basic.*;
import javax.swing.text.rtf.*;

public class JWord implements ActionListener, CaretListener
{

JFrame fr = new JFrame ("Frame");
JLabel Label1 = new JLabel("Label1 ",
SwingConstants.RIGHT);
JButton Button1 = new JButton("Print");

JTextPane TextPane1 = new JTextPane();

//The below two command lines creates instances for fonts

SimpleAttributeSet sas = new SimpleAttributeSet();

StyleContext sc = new StyleContext();

//The below command line sets up the variable for font updating

MutableAttributeSet mas;

//Then below command line sets the style for the JTextPane document

DefaultStyledDocument dse = new DefaultStyledDocument(sc);
JScrollPane ScrollPane1 = new JScrollPane(TextPane1,
ScrollPaneConstants.VERTICAL_SCROLLBAR_ALWAYS,

ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER);

//The below command line is the constructor for the rtf editor kit

RTFEditorKit rtfkit = new RTFEditorKit();

Dimension Size1 = new Dimension();

//The below external class helps in the printing of the rtf document

RTFRenderer RTFRenderer1 = new RTFRenderer();

public void initialize ()
{
Container pane = fr.getContentPane();
pane.setLayout(new FlowLayout());
fr.setSize(250,300);
fr.setLocation(300,300);
fr.setBackground(Color.lightGray);
//The below command line is the JTextPane using the rtf editor kit
//for any rtf editing

TextPane1.setEditorKit(rtfkit);
//The below command line sets the document that the JTextPane will be
//be referencing to

TextPane1.setDocument(dse);
Size1.width = 500;
Size1.height = 300;
ScrollPane1.setPreferredSize(Size1);
pane.add(ScrollPane1);
pane.add(Button1);
pane.add(Label1);
// Use the JAVA constant JFrame.HIDE_ON_CLOSE for subsequent forms in
multi form
// applications

fr.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
Button1.addActionListener(this);
TextPane1.addCaretListener(this);
fr.pack();
fr.setVisible(true);
}

public void printData()
{
//This is the main printing function that prints out the document

//The below command line sets the current JTextPane for printing
//by using the external printing class

RTFRenderer1.setpane(TextPane1);

//The below command line gets the attributes for the JAVA print dialog

try
{
//The below two command lines gets the Printer Job and uses the
//external RTFRenderer class as its Printable

PrinterJob prnJob = PrinterJob.getPrinterJob();
PageFormat format = prnJob.pageDialog(prnJob.defaultPage());
prnJob.setPrintable(RTFRenderer1, format);

if (prnJob.printDialog() == false)
{
return;
}

//The below command line prints out the document if the user clicked Ok

prnJob.print();
}

catch (PrinterException e)
{
Label1.setText("A printing error has occurred");
}

}

public void actionPerformed(ActionEvent event)
{
JComponent b = (JComponent)event.getSource();

if(b == Button1)
{
//The below two command lines prints the current content of the
document
//and repaints the main frame

printData();
fr.repaint();
}

}

public void caretUpdate(CaretEvent event)
{
JComponent w = (JComponent)event.getSource();
int g;

if(w == TextPane1)
{
g = event.getDot();
Label1.setText("Current Caret Position: " + g);
}

}
public static void main(String args[])
{
JWord a = new JWord();
a.initialize();
}
}

class RTFRenderer implements Printable
{
//This external class that does all the printing of all the rtf
document pages

int currentPage = -1;
JTextPane jtextPane = new JTextPane();
double pageEndY = 0;
double pageStartY = 0;
boolean scaleWidthToFit = true;
int currentIndex = 0;

public int print(Graphics graphics, PageFormat pageFormat, int
pageIndex)
{
//This function is the main printable overided function

double scale = 1.0;
Graphics2D graphics2D;
View rootView;
graphics2D = (Graphics2D) graphics;

jtextPane.setSize((int)pageFormat.getImageableWidth(),Integer.MAX_VALUE);
jtextPane.validate();

rootView = jtextPane.getUI().getRootView(jtextPane);

if((scaleWidthToFit) && (jtextPane.getMinimumSize().getWidth() >
pageFormat.getImageableWidth()))
{
scale =
pageFormat.getImageableWidth()/jtextPane.getMinimumSize().getWidth();
graphics2D.scale(scale, scale);
}

//The below four command lines shows that the content is clipped
//to the size of the printable page

graphics2D.setClip((int)(pageFormat.getImageableX()/scale),
(int)(pageFormat.getImageableY()/scale),
(int)(pageFormat.getImageableWidth()/scale),
(int)(pageFormat.getImageableHeight()/scale));

//The below if statement is to check to see if there is a new page to
render

if(pageIndex > currentPage)
{
currentPage = pageIndex;
pageStartY += pageEndY;
pageEndY = graphics2D.getClipBounds().getHeight();
}

while(currentIndex < pageIndex)
{
pageStartY += pageEndY;
pageEndY = graphics2D.getClipBounds().getHeight();
currentIndex++;
}

graphics2D.translate(graphics2D.getClipBounds().getX(),
graphics2D.getClipBounds().getY());

Rectangle allocation = new Rectangle(0, (int)-pageStartY,
(int)(jtextPane.getMinimumSize().getWidth()),
(int)(jtextPane.getPreferredSize().getHeight()));

//The below if else statements return PAGE_EXISTS only if the class
//sees that there are some contents in the document by calling the
printView class

if(printView(graphics2D,allocation,rootView))
{
return PAGE_EXISTS;
}

else
{
pageStartY = 0;
pageEndY = 0;
currentPage = -1;
currentIndex = 0;
return NO_SUCH_PAGE;
}

}

protected boolean printView(Graphics2D graphics2D, Shape allocation,
View view)
{
//This function paints the page if it exists

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
{
//The below if statement checks if there are pages currently to paint

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() - 15)
{
view.paint(graphics2D,allocation);
}

else
{

if(allocation.getBounds().getY() < pageEndY)
{
pageEndY = allocation.getBounds().getY();
}

}

}

}

}

}

return pageExists;
}

public void setpane(JTextPane TextPane1)
{
//This function gets the JTextPane

jtextPane.setContentType("text/rtf");
jtextPane = TextPane1;
}

}

I am doing something wrong but i really can't figure out the problem

I really hope someone can help me with this problem

Any help is greatly appreciated
Thank You

Yours Sincerely

Richard West

freesoft_2000@yahoo.com · Guest

Hi everyone,

Is anyone here that can offer me any suggestions?
Richard West