IlvBWBitmapData Class Reference

Bitmap data class. More...

#include <ilviews/bitmaps/data.h>

Inheritance diagram for IlvBWBitmapData:

Public Member Functions
	IlvBWBitmapData (IlUInt width, IlUInt height)
	Constructor. More...
virtual void	getRGBPixel (IlUInt x, IlUInt y, IlUChar &r, IlUChar &g, IlUChar &b) const
	Returns a true color representation of a pixel located in the image at the x and y coordinates. More...
virtual IlUChar *	getRGBPixels (const IlvRect &rect, IlUInt &size, IlUChar *data=0) const
	Returns a true color representation of a region of the image stored in the instance. More...
virtual IlUInt	getUsedColorNum ()
	Returns the number of referenced colors in the bitmap data. More...
void	setPixel (IlUInt x, IlUInt y, IlUChar pixel)
	Sets the internal representation of a pixel to the given value. More...
virtual void	setRGBPixel (IlUInt x, IlUInt y, IlUChar r, IlUChar g, IlUChar b)
	Sets a pixel of the image stored in the instance to the given true color representation. More...
Public Member Functions inherited from IlvBitmapData
	IlvBitmapData (IlUInt width, IlUInt height, IlUShort depth, IlUInt padding=32)
	Constructor. More...
virtual	~IlvBitmapData ()
	Destructor. More...
virtual void	blend (const IlvBitmapData *src, const IlvRect &srcrect, const IlvPoint &to, IlUChar blend)
	Blends a rectangle from another bitmap data to the given position. More...
virtual void	blendPixel (IlUInt xdst, IlUInt ydst, const IlvBitmapData *src, IlUInt xsrc, IlUInt ysrc, IlUChar blend)
	Blends a pixel from another bitmap data to the given position. More...
virtual void	copy (const IlvBitmapData *src, const IlvRect &srcrect, const IlvPoint &to)
	Copies a rectangle from another bitmap data to the given position. More...
virtual void	copyPixel (IlUInt xdst, IlUInt ydst, const IlvBitmapData *src, IlUInt xsrc, IlUInt ysrc)
	Copies a pixel from another bitmap data. More...
virtual void	fill (const IlvRect &rect, IlUChar r, IlUChar g, IlUChar b, IlUChar a=255)
	Fills a rectangular area of the bitmap data with the specified color. More...
IlUInt	getByteWidth () const
	Returns the size in bytes of a row of the image stored in the instance. More...
IlUInt	getCount () const
	Returns the reference count for this instance.
IlUChar *	getData () const
	Returns a pointer to the internal storage memory of the instance. More...
IlUShort	getDepth () const
	Returns the number of bits needed to describe a pixel of the image stored in the instance. More...
IlUInt	getHeight () const
	Returns the height in pixels of the image stored in the instance. More...
IlvBitmapInformation *	getInformation () const
	Returns the bitmap information. More...
virtual IlvBWBitmapData *	getMask () const
	Returns the mask bitmap data of the instance. More...
IlUInt	getPadding () const
	Returns the padding used by the instance. More...
IlUChar *	getRowStartData (IlUInt idx) const
	Returns a pointer to the storage memory of a given row of the image in the instance. More...
IlUInt	getWidth () const
	Returns the width in pixels of the image stored in the instance. More...
IlBoolean	hasMask () const
	Returns whether the instance has a mask. More...
void	lock ()
	Locks the current instance.
void	setInformation (IlvBitmapInformation *info)
	Sets the bitmap information. More...
virtual void	setMask (IlvBWBitmapData *mask)
	Sets the mask of the current instance. More...
virtual void	setRGBPixels (IlUChar *data, IlUInt byteWidth, const IlvRect &rect, const IlvPoint &to)
	Sets a region of the image stored in the instance to the given true color representation. More...
void	unLock ()
	Unlocks the current instance.

Detailed Description

Bitmap data class.

Library: xviews or winviews or mviews (mutually exclusive)

The IlvBWBitmapData class lets you manipulate black and white images. The value of each pixel in the image can be either 0 or 1.

Each pixel uses one bit. One byte stores up to 8 pixels. The internal representation for one byte is MSB.

See also

IlvIndexedBitmapData, IlvRGBBitmapData, IlvBitmap, IlvQuantizer, IlvQuickQuantizer, IlvWUQuantizer.

Constructor & Destructor Documentation

IlvBWBitmapData()

IlvBWBitmapData::IlvBWBitmapData	(	IlUInt	width,
		IlUInt	height
	)

Constructor.

Parameters

width	The width of the image.
height	The height of the image.

Member Function Documentation

getRGBPixel()

virtual void IlvBWBitmapData::getRGBPixel ( IlUInt  x, IlUInt  y, IlUChar &  r, IlUChar &  g, IlUChar &  b  ) const

virtual

Returns a true color representation of a pixel located in the image at the x and y coordinates.

Parameters

x	The x coordinate of the pixel.
y	The y coordinate of the pixel.
r	The red component of the pixel.
g	The green component of the pixel.
b	The blue component of the pixel.

Implements IlvBitmapData.

getRGBPixels()

virtual IlUChar* IlvBWBitmapData::getRGBPixels ( const IlvRect &  rect, IlUInt &  size, IlUChar *  data = 0  ) const

virtual

Returns a true color representation of a region of the image stored in the instance.

Each pixel uses 4 bytes of storage; the first byte is not used, the second byte represents the red component of the pixel color, the third byte represents the green component of the pixel color, and the fourth byte represents the blue component of the pixel color. The array of memory returned has size bytes. If the data parameter is given, this method does not allocate memory and writes the data to data. The array must be deleted by the application.

Parameters

rect	The region of the image.
size	The size of the returned data.
data	0 or a valid pointer of allocated memory where to store the resulting data.

Returns

The pointer to the data.

Reimplemented from IlvBitmapData.

getUsedColorNum()

virtual IlUInt IlvBWBitmapData::getUsedColorNum ( )

virtual

Returns the number of referenced colors in the bitmap data.

Returns

The number of colors used in the bitmap data.

Implements IlvBitmapData.

setPixel()

void IlvBWBitmapData::setPixel	(	IlUInt	x,
		IlUInt	y,
		IlUChar	pixel
	)

Sets the internal representation of a pixel to the given value.

Advanced use only. This method sets directly the internal data. The pixel value can be 0 or 1.

Parameters

x	The x position of the pixel.
y	The y position of the pixel.
pixel	The index of the pixel.

setRGBPixel()

virtual void IlvBWBitmapData::setRGBPixel ( IlUInt  x, IlUInt  y, IlUChar  r, IlUChar  g, IlUChar  b  )

virtual

Sets a pixel of the image stored in the instance to the given true color representation.

Parameters

x	The x position of the pixel.
y	The y position of the pixel.
r	The red component of the pixel.
g	The green component of the pixel.
b	The blue component of the pixel.

Implements IlvBitmapData.