#include <qwt_series_data.h>
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 |
QVector uses implicit data sharing and can be passed around as argument efficiently.
QwtArraySeriesData< T >::QwtArraySeriesData | ( | ) | [inline] |
Constructor.
QwtArraySeriesData< T >::QwtArraySeriesData | ( | const QVector< T > & | samples | ) | [inline] |
Constructor
samples | Array of samples |
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.
T QwtArraySeriesData< T >::sample | ( | size_t | i | ) | const [inline, virtual] |
const QVector< T > QwtArraySeriesData< T >::samples | ( | ) | const [inline] |
void QwtSeriesData< T >::setRectOfInterest | ( | const QRectF & | ) | [inline, virtual, inherited] |
void QwtArraySeriesData< T >::setSamples | ( | const QVector< T > & | samples | ) | [inline] |
Assign an array of samples
samples | Array of samples |
size_t QwtArraySeriesData< T >::size | ( | ) | const [inline, virtual] |
QRectF QwtSeriesData< T >::d_boundingRect [mutable, protected, inherited] |
Can be used to cache a calculated bounding rectangle.
QVector<T> QwtArraySeriesData< T >::d_samples [protected] |
Vector of samples.