Structure to manage image buffer. More...

#include <Image_PixMapData.hxx>

Inheritance diagram for Image_PixMapData:

Public Member Functions
	Image_PixMapData ()
	Empty constructor. More...

void	Init (const Handle< NCollection_BaseAllocator > &theAlloc, const Standard_Size theSizeBPP, const Standard_Size theSizeX, const Standard_Size theSizeY, const Standard_Size theSizeRowBytes, Standard_Byte *theDataPtr)
	Initializer. More...

const Standard_Byte *	Row (const Standard_Size theRow) const

Standard_Byte *	ChangeRow (const Standard_Size theRow)

const Standard_Byte *	Value (const Standard_Size theRow, const Standard_Size theCol) const

Standard_Byte *	ChangeValue (const Standard_Size theRow, const Standard_Size theCol)

Standard_Size	MaxRowAligmentBytes () const
	Compute the maximal row alignment for current row size. More...

void	SetTopDown (const bool theIsTopDown)
	Setup scanlines order in memory - top-down or bottom-up. Drawers should explicitly specify this value if current state IsTopDown() was ignored! More...

Public Member Functions inherited from NCollection_Buffer
	NCollection_Buffer (const Handle< NCollection_BaseAllocator > &theAlloc, const Standard_Size theSize=0, Standard_Byte *theData=NULL)
	Default constructor. When theData is NULL but theSize is not 0 than buffer of specified size will be allocated. More...

	~NCollection_Buffer ()
	Destructor. More...

const Standard_Byte *	Data () const

Standard_Byte *	ChangeData ()

bool	IsEmpty () const

Standard_Size	Size () const
	Return buffer length in bytes. More...

const Handle< NCollection_BaseAllocator > &	Allocator () const

void	SetAllocator (const Handle< NCollection_BaseAllocator > &theAlloc)
	Assign new buffer allocator with de-allocation of buffer. More...

bool	Allocate (const Standard_Size theSize)
	Allocate the buffer. More...

void	Free ()
	De-allocate buffer. More...

Public Member Functions inherited from Standard_Transient
	Standard_Transient ()
	Empty constructor. More...

	Standard_Transient (const Standard_Transient &)
	Copy constructor – does nothing. More...

Standard_Transient &	operator= (const Standard_Transient &)
	Assignment operator, needed to avoid copying reference counter. More...

virtual	~Standard_Transient ()
	Destructor must be virtual. More...

virtual void	Delete () const
	Memory deallocator for transient classes. More...

virtual const opencascade::handle< Standard_Type > &	DynamicType () const
	Returns a type descriptor about this object. More...

Standard_Boolean	IsInstance (const opencascade::handle< Standard_Type > &theType) const
	Returns a true value if this is an instance of Type. More...

Standard_Boolean	IsInstance (const Standard_CString theTypeName) const
	Returns a true value if this is an instance of TypeName. More...

Standard_Boolean	IsKind (const opencascade::handle< Standard_Type > &theType) const
	Returns true if this is an instance of Type or an instance of any class that inherits from Type. Note that multiple inheritance is not supported by OCCT RTTI mechanism. More...

Standard_Boolean	IsKind (const Standard_CString theTypeName) const
	Returns true if this is an instance of TypeName or an instance of any class that inherits from TypeName. Note that multiple inheritance is not supported by OCCT RTTI mechanism. More...

Standard_Transient *	This () const
	Returns non-const pointer to this object (like const_cast). For protection against creating handle to objects allocated in stack or call from constructor, it will raise exception Standard_ProgramError if reference counter is zero. More...

Standard_Integer	GetRefCount () const
	Get the reference counter of this object. More...

void	IncrementRefCounter () const
	Increments the reference counter of this object. More...

Standard_Integer	DecrementRefCounter () const
	Decrements the reference counter of this object; returns the decremented value. More...

Data Fields
Standard_Size	SizeBPP
	bytes per pixel More...

Standard_Size	SizeX
	width in pixels More...

Standard_Size	SizeY
	height in pixels More...

Standard_Size	SizeRowBytes
	number of bytes per line (in most cases equal to 3 * sizeX) More...

Standard_Size	TopToDown
	image scanlines direction in memory from Top to the Down More...

Protected Attributes
Standard_Byte *	myTopRowPtr
	pointer to the topmost row (depending on scanlines order in memory) More...

Protected Attributes inherited from NCollection_Buffer
Standard_Byte *	myData
	data pointer More...

Standard_Size	mySize
	buffer length in bytes More...

Handle< NCollection_BaseAllocator >	myAllocator
	buffer allocator More...

Additional Inherited Members
Public Types inherited from Standard_Transient
typedef void	base_type
	Returns a type descriptor about this object. More...

Static Public Member Functions inherited from Standard_Transient
static const char *	get_type_name ()
	Returns a type descriptor about this object. More...

static const opencascade::handle< Standard_Type > &	get_type_descriptor ()
	Returns type descriptor of Standard_Transient class. More...

Detailed Description

Structure to manage image buffer.

Constructor & Destructor Documentation

Image_PixMapData::Image_PixMapData ( )

inline

Empty constructor.

Member Function Documentation

Standard_Byte* Image_PixMapData::ChangeRow ( const Standard_Size theRow )

inline

Returns: data pointer to requested row (first column).

Standard_Byte* Image_PixMapData::ChangeValue	(	const Standard_Size	theRow,
		const Standard_Size	theCol
	)

inline

Returns: data pointer to requested position.

void Image_PixMapData::Init	(	const Handle< NCollection_BaseAllocator > &	theAlloc,
		const Standard_Size	theSizeBPP,
		const Standard_Size	theSizeX,
		const Standard_Size	theSizeY,
		const Standard_Size	theSizeRowBytes,
		Standard_Byte *	theDataPtr
	)

inline

Initializer.

Standard_Size Image_PixMapData::MaxRowAligmentBytes ( ) const

inline

Compute the maximal row alignment for current row size.

Returns: maximal row alignment in bytes (up to 16 bytes).

const Standard_Byte* Image_PixMapData::Row ( const Standard_Size theRow ) const

inline

Returns: data pointer to requested row (first column).

void Image_PixMapData::SetTopDown ( const bool theIsTopDown )

inline

Setup scanlines order in memory - top-down or bottom-up. Drawers should explicitly specify this value if current state IsTopDown() was ignored!

Parameters

theIsTopDown top-down flag

const Standard_Byte* Image_PixMapData::Value	(	const Standard_Size	theRow,
		const Standard_Size	theCol
	)		const

inline

Returns: data pointer to requested position.

Field Documentation

Standard_Byte* Image_PixMapData::myTopRowPtr

protected

pointer to the topmost row (depending on scanlines order in memory)

Standard_Size Image_PixMapData::SizeBPP

bytes per pixel

Standard_Size Image_PixMapData::SizeRowBytes

number of bytes per line (in most cases equal to 3 * sizeX)

Standard_Size Image_PixMapData::SizeX

width in pixels

Standard_Size Image_PixMapData::SizeY

height in pixels

Standard_Size Image_PixMapData::TopToDown

image scanlines direction in memory from Top to the Down

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

Image_PixMapData.hxx

Public Member Functions

Data Fields

Protected Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Field Documentation