Magick::PixelData Class Reference

Collaboration diagram for Magick::PixelData:

Public Member Functions
	PixelData (Magick::Image &image_, std::string map_, const StorageType type_)
	PixelData (Magick::Image &image_, const ::ssize_t x_, const ::ssize_t y_, const size_t width_, const size_t height_, std::string map_, const StorageType type_)
const void *	data (void) const
::ssize_t	length (void) const
::ssize_t	size (void) const

Private Member Functions
	PixelData (const PixelData &pixels_)
const PixelData &	operator= (const PixelData &pixels_)
void	init (Magick::Image &image_, const ::ssize_t x_, const ::ssize_t y_, const size_t width_, const size_t height_, std::string map_, const StorageType type_)
void	relinquish (void) throw ()

Private Attributes
void *	_data
::ssize_t	_length
::ssize_t	_size

Detailed Description

Definition at line 78 of file Pixels.h.

Constructor & Destructor Documentation

PixelData() [1/2]

Magick::PixelData::PixelData	(	Magick::Image &	image_,
		std::string	map_,
		const StorageType	type_ )

Definition at line 101 of file Pixels.cpp.

{
  init(image_,0,0,image_.columns(),image_.rows(),map_,type_);
}

PixelData() [2/2]

Magick::PixelData::PixelData	(	Magick::Image &	image_,
		const ::ssize_t	x_,
		const ::ssize_t	y_,
		const size_t	width_,
		const size_t	height_,
		std::string	map_,
		const StorageType	type_ )

Definition at line 107 of file Pixels.cpp.

{
  init(image_,x_,y_,width_,height_,map_,type_);
}

~PixelData()

Magick::PixelData::~PixelData

(

void

)

Definition at line 114 of file Pixels.cpp.

{
  relinquish();
}

Member Function Documentation

data()

const void * Magick::PixelData::data

(

void

)

const

Definition at line 119 of file Pixels.cpp.

{
  return(_data);
}

init()

void Magick::PixelData::init ( Magick::Image & image_, const ::ssize_t x_, const ::ssize_t y_, const size_t width_, const size_t height_, std::string map_, const StorageType type_ )

private

Definition at line 134 of file Pixels.cpp.

{
  size_t
    size;
 
  _data=(void *) NULL;
  _length=0;
  _size=0;
  if ((x_ < 0) || (width_ == 0) || (y_ < 0) || (height_ == 0) ||
      (x_ > (ssize_t) image_.columns()) || ((width_ + x_) > image_.columns())
      || (y_ > (ssize_t) image_.rows()) || ((height_ + y_) > image_.rows())
      || (map_.length() == 0))
    return;
 
  switch(type_)
  {
    case CharPixel:
      size=sizeof(unsigned char);
      break;
    case DoublePixel:
      size=sizeof(double);
      break;
    case FloatPixel:
      size=sizeof(float);
      break;
    case IntegerPixel:
    case LongPixel:
      size=sizeof(unsigned int);
      break;
    case QuantumPixel:
      size=sizeof(Quantum);
      break;
    case ShortPixel:
      size=sizeof(unsigned short);
      break;
    default:
      throwExceptionExplicit(OptionError,"Invalid type");
      return;
  }
 
  _length=width_*height_*map_.length();
  _size=_length*size;
  _data=AcquireMagickMemory(_size);
 
  GetPPException;
  MagickCore::ExportImagePixels(image_.constImage(),x_,y_,width_,height_,
    map_.c_str(),type_,_data,exceptionInfo);
  if (exceptionInfo->severity != UndefinedException)
    relinquish();
  ThrowPPException(image_.quiet());
}

length()

ssize_t Magick::PixelData::length

(

void

)

const

Definition at line 124 of file Pixels.cpp.

{
  return(_length);
}

relinquish()

void Magick::PixelData::relinquish ( void ) throw (  )

private

Definition at line 188 of file Pixels.cpp.

{
  if (_data != (void *)NULL)
    _data=RelinquishMagickMemory(_data);
  _length=0;
  _size=0;
}

size()

ssize_t Magick::PixelData::size

(

void

)

const

Definition at line 129 of file Pixels.cpp.

{
  return(_size);
}

Member Data Documentation

_data

void* Magick::PixelData::_data

private

Definition at line 114 of file Pixels.h.

_length

::ssize_t Magick::PixelData::_length

private

Definition at line 115 of file Pixels.h.

_size

::ssize_t Magick::PixelData::_size

private

Definition at line 116 of file Pixels.h.

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The documentation for this class was generated from the following files:

• ImageMagick-6/Magick++/lib/Magick++/Pixels.h
• ImageMagick-6/Magick++/lib/Pixels.cpp