gov.nih.nlm.util
Class TwoPagePrintable

java.lang.Object
  gov.nih.nlm.util.TwoPagePrintable

All Implemented Interfaces:

Printable

public class TwoPagePrintable
extends Object
implements Printable

Handles printing of the contents of a JEditorPane using two pages per sheet of paper. This class implements the Printable interface, instances of this class can also be used as the argument in the setPrintable method of the PrinterJob class.

Author:

MEME Group

See Also:

HTMLDocumentRenderer

Field Summary

protected double	current_page
protected JEditorPane	jeditor_pane
protected double	page_end_y
protected double	page_start_y
protected int[]	page_starts
protected int	pages_printed
protected String	title

Fields inherited from interface java.awt.print.Printable

NO_SUCH_PAGE, PAGE_EXISTS

Constructor Summary

TwoPagePrintable(JEditorPane jp, String title)
Instantiates the TwoPagePrintable using the specified JEditorPane and String title.

Method Summary

int	getPagesPrinted() Returns the number of pages printed.
boolean	getScaleWidthToFit() Indicates whether or not to scale content to fit width of the page.
double	getScalingFactor() Returns the scaling factor.
int	print(Graphics graphics, PageFormat page_format, int page_index) The print method implements the Printable interface.
protected boolean	printView(Graphics2D graphics_2D, Shape allocation, View view) printView is a recursive method which iterates through the tree structure of the view sent to it.
void	setScaleWidthToFit(boolean scale_width) Sets the flag indiciating whether or not to scale content to fit the width of the page
void	setScalingFactor(double scaling_factor) Set the scaling factor.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

jeditor_pane

protected JEditorPane jeditor_pane

page_end_y

protected double page_end_y

current_page

protected double current_page

page_start_y

protected double page_start_y

page_starts

protected int[] page_starts

pages_printed

protected int pages_printed

title

protected String title

Constructor Detail

TwoPagePrintable

public TwoPagePrintable(JEditorPane jp,
                        String title)

Instantiates the TwoPagePrintable using the specified JEditorPane and String title.

Parameters:

jp - the JEditorPane to print

title - the title

Method Detail

getPagesPrinted

public int getPagesPrinted()

Returns the number of pages printed.

Returns:

the number of pages printed

print

public int print(Graphics graphics,
                 PageFormat page_format,
                 int page_index)

The print method implements the Printable interface. The code prints two logical pages to the same sheet of paper with a title bar and a vertical line separating the two pages.

Specified by:

print in interface Printable

Parameters:

graphics - the Graphics representing the printer

page_format - the PageFormat

page_index - the page index

Returns:

an int representation of printable status

printView

protected boolean printView(Graphics2D graphics_2D,
                            Shape allocation,
                            View view)

printView is a recursive method which iterates through the tree structure of the view sent to it. If the view sent to printView is a branch view, that is one with children, the method calls itself on each of these children. If the view is a leaf view, that is a view without children which represents an actual piece of text to be painted, printView attempts to render the view to the Graphics2D object. I. When any view starts after the beginning of the current printable page, this means that there are pages to print and the method sets page_exists to true. II. When a leaf view is taller than the printable area of a page, it cannot, of course, be broken down to fit a single page. Such a View will be printed whenever it intersects with the Graphics2D clip. III. If a leaf view intersects the printable area of the graphics clip and fits vertically within the printable area, it will be rendered.

Parameters:

graphics_2D - An object Graphics2D

allocation - An object Shape

view - An object View

Returns:

A boolean representation of page status

getScaleWidthToFit

public boolean getScaleWidthToFit()

Indicates whether or not to scale content to fit width of the page.

Returns:

true if the content should be scaled, false otherwise

setScaleWidthToFit

public void setScaleWidthToFit(boolean scale_width)

Sets the flag indiciating whether or not to scale content to fit the width of the page

Parameters:

scale_width - a boolean flag indicating whether or not to scale the content

setScalingFactor

public void setScalingFactor(double scaling_factor)

Set the scaling factor.

Parameters:

scaling_factor - double

getScalingFactor

public double getScalingFactor()

Returns the scaling factor.

Returns:

the scaling factor