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: 8034 $

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 PNG.

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 PNG.

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