weka.gui.visualize
Class PNGWriter

java.lang.Object
  extended by weka.gui.visualize.JComponentWriter
      extended by 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
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
 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