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IlvBWBitmapData Class Reference

Bitmap data class. More...

#include <ilviews/bitmaps/data.h>

Inheritance diagram for IlvBWBitmapData:
IlvBitmapData

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 IlUChargetRGBPixels (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.
 
IlUChargetData () 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...
 
IlvBitmapInformationgetInformation () const
 Returns the bitmap information. More...
 
virtual IlvBWBitmapDatagetMask () const
 Returns the mask bitmap data of the instance. More...
 
IlUInt getPadding () const
 Returns the padding used by the instance. More...
 
IlUChargetRowStartData (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 ( IlUInt  width,
IlUInt  height 
)

Constructor.

Parameters
widthThe width of the image.
heightThe height of the image.

Member Function Documentation

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
xThe x coordinate of the pixel.
yThe y coordinate of the pixel.
rThe red component of the pixel.
gThe green component of the pixel.
bThe blue component of the pixel.

Implements IlvBitmapData.

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
rectThe region of the image.
sizeThe size of the returned data.
data0 or a valid pointer of allocated memory where to store the resulting data.
Returns
The pointer to the data.

Reimplemented from IlvBitmapData.

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.

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
xThe x position of the pixel.
yThe y position of the pixel.
pixelThe index of the pixel.
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
xThe x position of the pixel.
yThe y position of the pixel.
rThe red component of the pixel.
gThe green component of the pixel.
bThe blue component of the pixel.

Implements IlvBitmapData.


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