weka.gui.visualize

Class PNGWriter

java.lang.Object

weka.gui.visualize.JComponentWriter

weka.gui.visualize.PNGWriter

public class PNGWriter
extends JComponentWriter

This class takes any JComponent and outputs it to a PNG-file. Scaling is by default disabled, since we always take a screenshot.

Version:

$Revision: 7059 $

Author:

fracpete (fracpete at waikato dot ac dot nz)

Constructor Summary

Constructors

Constructor and Description
PNGWriter() initializes the object
PNGWriter(javax.swing.JComponent c) initializes the object with the given Component
PNGWriter(javax.swing.JComponent c, java.io.File f) initializes the object with the given Component and filename

Method Summary

Modifier and Type	Method and Description
void	generateOutput() generates the actual output
java.awt.Color	getBackground() returns the current background color
java.lang.String	getDescription() returns the name of the writer, to display in the FileChooser.
java.lang.String	getExtension() returns the extension (incl.
void	initialize() further initialization
static void	main(java.lang.String[] args) for testing only
void	setBackground(java.awt.Color c) sets the background color to use in creating the JPEG

Methods inherited from class weka.gui.visualize.JComponentWriter

getComponent, getCustomHeight, getCustomWidth, getFile, getScalingEnabled, getUseCustomDimensions, getXScale, getYScale, setComponent, setCustomHeight, setCustomWidth, setFile, setScale, setScalingEnabled, setUseCustomDimensions, toOutput, toOutput, toOutput

Methods inherited from class java.lang.Object

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

Constructor Detail

PNGWriter

public PNGWriter()

initializes the object

PNGWriter

public PNGWriter(javax.swing.JComponent c)

initializes the object with the given Component

Parameters:

c - the component to print in the output format

PNGWriter

public PNGWriter(javax.swing.JComponent c,
                 java.io.File f)

initializes the object with the given Component and filename

Parameters:

c - the component to print in the output format

f - the file to store the output in

Method Detail

initialize

public void initialize()

further initialization

getDescription

public java.lang.String getDescription()

returns the name of the writer, to display in the FileChooser. must be overridden in the derived class.

Specified by:

getDescription in class JComponentWriter

Returns:

the name of the writer

getExtension

public java.lang.String getExtension()

returns the extension (incl. ".") of the output format, to use in the FileChooser.

Specified by:

getExtension in class JComponentWriter

Returns:

the file extension

getBackground

public java.awt.Color getBackground()

returns the current background color

Returns:

the current background color

setBackground

public void setBackground(java.awt.Color c)

sets the background color to use in creating the JPEG

Parameters:

c - the color to use for background

generateOutput

public void generateOutput()
                    throws java.lang.Exception

generates the actual output

Throws:

java.lang.Exception - if something goes wrong

main

public static void main(java.lang.String[] args)
                 throws java.lang.Exception

for testing only

Parameters:

args - the commandline arguments

Throws:

java.lang.Exception - if something goes wrong