QwtArraySeriesData< T > Class Template Reference

Template class for data, that is organized as QVector. More...

#include <qwt_series_data.h>

Inheritance diagram for QwtArraySeriesData< T >:

Inheritance graph
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List of all members.

Public Member Functions

virtual QRectF boundingRect () const =0
 QwtArraySeriesData (const QVector< T > &)
 QwtArraySeriesData ()
virtual T sample (size_t) const
const QVector< T > samples () const
virtual void setRectOfInterest (const QRectF &)
void setSamples (const QVector< T > &)
virtual size_t size () const

Protected Attributes

QRectF d_boundingRect
QVector< T > d_samples


Detailed Description

template<typename T>
class QwtArraySeriesData< T >

Template class for data, that is organized as QVector.

QVector uses implicit data sharing and can be passed around as argument efficiently.


Constructor & Destructor Documentation

template<typename T >
QwtArraySeriesData< T >::QwtArraySeriesData (  )  [inline]

Constructor.

template<typename T>
QwtArraySeriesData< T >::QwtArraySeriesData ( const QVector< T > &  samples  )  [inline]

Constructor

Parameters:
samples Array of samples


Member Function Documentation

virtual QRectF QwtSeriesData< T >::boundingRect (  )  const [pure virtual, inherited]

Calculate the bounding rect of all samples

The bounding rect is necessary for autoscaling and can be used for a couple of painting optimizations.

qwtBoundingRect(...) offers slow implementations iterating over the samples. For large sets it is recommended to implement something faster f.e. by caching the bounding rect.

template<typename T >
T QwtArraySeriesData< T >::sample ( size_t  i  )  const [inline, virtual]

Return a sample

Parameters:
i Index
Returns:
Sample at position i

Implements QwtSeriesData< T >.

template<typename T >
const QVector< T > QwtArraySeriesData< T >::samples (  )  const [inline]

Returns:
Array of samples

void QwtSeriesData< T >::setRectOfInterest ( const QRectF &   )  [inline, virtual, inherited]

template<typename T>
void QwtArraySeriesData< T >::setSamples ( const QVector< T > &  samples  )  [inline]

Assign an array of samples

Parameters:
samples Array of samples

template<typename T >
size_t QwtArraySeriesData< T >::size (  )  const [inline, virtual]

Returns:
Number of samples

Implements QwtSeriesData< T >.


Member Data Documentation

QRectF QwtSeriesData< T >::d_boundingRect [mutable, protected, inherited]

Can be used to cache a calculated bounding rectangle.

template<typename T>
QVector<T> QwtArraySeriesData< T >::d_samples [protected]

Vector of samples.


Generated on Wed Jan 11 15:23:01 2012 for Qwt User's Guide by  doxygen 1.5.9