captcha.graphics
Class RgbMemoryImageConsumer

java.lang.Object
  captcha.graphics.RgbMemoryImageConsumer

All Implemented Interfaces:

java.awt.image.ImageConsumer

public class RgbMemoryImageConsumer
extends java.lang.Object
implements java.awt.image.ImageConsumer

This class grabs the pixels of an image from an ImageProducer.

Field Summary

private int	m_height Stores the height of the produced image.
private java.awt.image.ImageProducer	m_imageProducer Stores the ImageProducer, which produces the image data.
private boolean	m_productionComplete Stores whether the image production is ready.
private java.lang.Object	m_productionLock This Object is needed for internal synchronization.
private int[]	m_rgbPixels Stores the pixels of the image in the RGB format.
private int	m_width Stores the width of the produced image.

Fields inherited from interface java.awt.image.ImageConsumer

COMPLETESCANLINES, IMAGEABORTED, IMAGEERROR, RANDOMPIXELORDER, SINGLEFRAME, SINGLEFRAMEDONE, SINGLEPASS, STATICIMAGEDONE, TOPDOWNLEFTRIGHT

Constructor Summary

RgbMemoryImageConsumer(java.awt.image.ImageProducer a_imageProducer)
Creates a ne RgbMemoryImageConsumer.

Method Summary

int	getHeight() Returns the height of the produced image.
int[]	getRgbPixels() Returns a copy of the pixel data of the produced image in the default RGB color model.
int	getWidth() Returns the width of the produced image.
void	imageComplete(int a_status) This method is called by the ImageProducer, if the image production is ready.
void	setColorModel(java.awt.image.ColorModel a_colorModel) This method is only for compatibility with the ImageConsumer interface.
void	setDimensions(int a_width, int a_height) This method sets the dimensions of the produced image.
void	setHints(int a_hints) This method is only for compatibility with the ImageConsumer interface.
void	setPixels(int a_posX, int a_posY, int a_width, int a_height, java.awt.image.ColorModel a_colorModel, byte[] a_pixels, int a_offset, int a_scansize) This method transfers the pixels between ImageProducer and ImageConsumer.
void	setPixels(int a_posX, int a_posY, int a_width, int a_height, java.awt.image.ColorModel a_colorModel, int[] a_pixels, int a_offset, int a_scansize) This method transfers the pixels between ImageProducer and ImageConsumer.
void	setProperties(java.util.Hashtable a_properties) This method is only for compatibility with the ImageConsumer interface.

Methods inherited from class java.lang.Object

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

Field Detail

m_rgbPixels

private int[] m_rgbPixels

Stores the pixels of the image in the RGB format.

m_imageProducer

private java.awt.image.ImageProducer m_imageProducer

Stores the ImageProducer, which produces the image data.

m_width

private int m_width

Stores the width of the produced image.

m_height

private int m_height

Stores the height of the produced image.

m_productionLock

private java.lang.Object m_productionLock

This Object is needed for internal synchronization.

m_productionComplete

private boolean m_productionComplete

Stores whether the image production is ready. This is needed for internal synchronization.

Constructor Detail

RgbMemoryImageConsumer

public RgbMemoryImageConsumer(java.awt.image.ImageProducer a_imageProducer)

Creates a ne RgbMemoryImageConsumer. This method blocks until the image is produced by the ImageProducer.

Parameters:

a_imageProducer - The ImageProducer which produces the image.

Method Detail

imageComplete

public void imageComplete(int a_status)

This method is called by the ImageProducer, if the image production is ready. Nobody else than the ImageProducer should call this method.

Specified by:

imageComplete in interface java.awt.image.ImageConsumer

Parameters:

a_status - The error code of the image production.

setColorModel

public void setColorModel(java.awt.image.ColorModel a_colorModel)

This method is only for compatibility with the ImageConsumer interface.

Specified by:

setColorModel in interface java.awt.image.ImageConsumer

Parameters:

a_colorModel - The default color model of the produced pixels.

setDimensions

public void setDimensions(int a_width,
                          int a_height)

This method sets the dimensions of the produced image. Only the ImageProducer should call this method.

Specified by:

setDimensions in interface java.awt.image.ImageConsumer

Parameters:

a_width - The width of the produced image.

a_height - The height of the produced image.

setHints

public void setHints(int a_hints)

This method is only for compatibility with the ImageConsumer interface.

Specified by:

setHints in interface java.awt.image.ImageConsumer

Parameters:

a_hints - Some hints about the pixel transfer between ImageProducer and ImageConsumer.

setPixels

public void setPixels(int a_posX,
                      int a_posY,
                      int a_width,
                      int a_height,
                      java.awt.image.ColorModel a_colorModel,
                      int[] a_pixels,
                      int a_offset,
                      int a_scansize)

This method transfers the pixels between ImageProducer and ImageConsumer. Only the ImageProducer should call this method.

Specified by:

setPixels in interface java.awt.image.ImageConsumer

Parameters:

a_posX - The X position of the transfer rectangle.

a_posY - The Y position of the transfer rectangle.

a_width - The width of the transfer rectangle.

a_height - The height of the transfer rectangle.

a_pixels - The pixel data of the transfer rectangle.

a_offset - The offset in the pixel data array.

a_scansize - The length of each line in the pixel data array.

setPixels

public void setPixels(int a_posX,
                      int a_posY,
                      int a_width,
                      int a_height,
                      java.awt.image.ColorModel a_colorModel,
                      byte[] a_pixels,
                      int a_offset,
                      int a_scansize)

This method transfers the pixels between ImageProducer and ImageConsumer. Only the ImageProducer should call this method.

Specified by:

setPixels in interface java.awt.image.ImageConsumer

Parameters:

a_posX - The X position of the transfer rectangle.

a_posY - The Y position of the transfer rectangle.

a_width - The width of the transfer rectangle.

a_height - The height of the transfer rectangle.

a_pixels - The pixel data of the transfer rectangle.

a_offset - The offset in the pixel data array.

a_scansize - The length of each line in the pixel data array.

setProperties

public void setProperties(java.util.Hashtable a_properties)

This method is only for compatibility with the ImageConsumer interface. ******* pre Java 5 *******

Specified by:

setProperties in interface java.awt.image.ImageConsumer

Parameters:

a_properties - Some properties for the produced image.

getWidth

public int getWidth()

Returns the width of the produced image.

Returns:

The width of the produced image.

getHeight

public int getHeight()

Returns the height of the produced image.

Returns:

The height of the produced image.

getRgbPixels

public int[] getRgbPixels()

Returns a copy of the pixel data of the produced image in the default RGB color model.

Returns:

The pixel data in the default RGB color model.