DcmQuantHistogramItemList Class Reference

this is a helper class used by class DcmQuantColorHashTable. More...

Public Member Functions
	DcmQuantHistogramItemList ()
	constructor
	~DcmQuantHistogramItemList ()
	destructor. Destroys all objects pointed to by list.
void	moveto (DcmQuantHistogramItemPointer *array, unsigned long &counter, unsigned long numcolors)
	this method moves the contents of this list into the given array. More...
int	lookup (const DcmQuantPixel &colorP)
	searches the list for an entry that equals the given pixel value. More...
unsigned long	add (const DcmQuantPixel &colorP)
	adds the given pixel to the list. More...
void	push_front (const DcmQuantPixel &colorP, int value)
	inserts a new DcmQuantHistogramItem at the beginning of the list. More...
size_t	size () const
	returns current number of objects in the list

Private Member Functions
	OFListIterator (DcmQuantHistogramItem *) first
	temporary iterator used in various methods; declared here for efficiency reasons only.
	OFListIterator (DcmQuantHistogramItem *) last
	constant iterator which always contains list_.end(); declared here for efficiency reasons only.

Private Attributes
OFList< DcmQuantHistogramItem * >	list_
	list of (pointers to) DcmQuantHistogramItem objects

Detailed Description

this is a helper class used by class DcmQuantColorHashTable.

It maintains a list of DcmQuantHistogramItem objects.

Member Function Documentation

unsigned long DcmQuantHistogramItemList::add ( const DcmQuantPixel &  colorP )

inline

adds the given pixel to the list.

If the pixel is already contained in the list, it's integer value (counter) is increased and 0 is returned. Otherwise, a new entry with a counter of 1 is created and 1 is returned.

Parameters

colorP

pixel to add to the list

Returns

0 if pixel was already in list, 1 otherwise.

int DcmQuantHistogramItemList::lookup ( const DcmQuantPixel &  colorP )

inline

searches the list for an entry that equals the given pixel value.

If found, the integer value assigned to that pixel is returned, otherwise returns -1.

Parameters

colorP

pixel to lookup in list

Returns

integer value for given color if found, -1 otherwise.

Referenced by DcmQuantColorHashTable::lookup().

void DcmQuantHistogramItemList::moveto	(	DcmQuantHistogramItemPointer *	array,
		unsigned long &	counter,
		unsigned long	numcolors
	)

this method moves the contents of this list into the given array.

The list becomes empty if the array is large enough to contain all list members.

Parameters

array	array of pointers to DcmQuantHistogramItem
counter	When called, contains the index of the array element into which the first member of the list will be moved. Must be < numcolors. Upon return, contains the array index of the last element moved + 1.
numcolors	number of elements in array

void DcmQuantHistogramItemList::push_front ( const DcmQuantPixel &  colorP, int  value  )

inline

inserts a new DcmQuantHistogramItem at the beginning of the list.

Parameters

colorP	pixel value assigned to the new object in the list
value	integer value assigned to the new object in the list

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

• dcmimage/include/dcmtk/dcmimage/diqthitl.h