QmitkHistogram Class Reference

A QwtPlotItem that renders a histogram as vertical bars in a QwtPlot. More...

#include <QmitkHistogram.h>

Inheritance diagram for QmitkHistogram:

Collaboration diagram for QmitkHistogram:

Public Member Functions
	QmitkHistogram (const QString &title=QString())
	Construct a histogram with a plain text title. More...
	QmitkHistogram (const QwtText &title)
	Construct a histogram with a formatted QwtText title. More...
	~QmitkHistogram () override
	Destructor. More...
void	setData (const QwtIntervalSeriesData &data)
	Set the interval series data for the histogram. More...
const QwtIntervalSeriesData &	data () const
	Get the current interval series data. More...
void	setColor (const QColor &color)
	Set the fill color for the histogram bars. More...
QColor	color () const
	Get the current bar color. More...
QRectF	boundingRect () const override
	Calculate the bounding rectangle of the histogram data. More...
void	draw (QPainter *painter, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect) const override
	Draw the histogram bars onto the given painter. More...
void	setBaseline (double reference)
	Set the baseline reference value for the histogram. More...
double	baseline () const
	Get the current baseline reference value. More...

Protected Member Functions
virtual void	drawBar (QPainter *painter, Qt::Orientation o, const QRect &rect) const
	Draw a single histogram bar with 3D shading. More...

Detailed Description

A QwtPlotItem that renders a histogram as vertical bars in a QwtPlot.

Each bar corresponds to an interval sample. Bars are drawn with a 3D shading effect using lighter/darker pen colors. The baseline reference value can be adjusted.

See also

QmitkPlotWidget, QmitkPlotDialog

Definition at line 31 of file QmitkHistogram.h.

Constructor & Destructor Documentation

QmitkHistogram() [1/2]

QmitkHistogram::QmitkHistogram ( const QString &  title = QString() )

explicit

Construct a histogram with a plain text title.

Parameters

[in]

title

The title string for the histogram item.

QmitkHistogram() [2/2]

QmitkHistogram::QmitkHistogram ( const QwtText &  title )

explicit

Construct a histogram with a formatted QwtText title.

Parameters

[in]

title

The QwtText title.

~QmitkHistogram()

QmitkHistogram::~QmitkHistogram ( )

override

Destructor.

Member Function Documentation

baseline()

double QmitkHistogram::baseline

(

)

const

Get the current baseline reference value.

Returns

The baseline value.

boundingRect()

QRectF QmitkHistogram::boundingRect ( ) const

override

Calculate the bounding rectangle of the histogram data.

Returns

The bounding rectangle including the baseline.

color()

QColor QmitkHistogram::color

(

)

const

Get the current bar color.

Returns

The color.

data()

const QwtIntervalSeriesData& QmitkHistogram::data

(

)

const

Get the current interval series data.

Returns

Const reference to the data.

draw()

void QmitkHistogram::draw ( QPainter *  painter, const QwtScaleMap &  xMap, const QwtScaleMap &  yMap, const QRectF &  canvasRect  ) const

override

Draw the histogram bars onto the given painter.

Parameters

[in]	painter	The QPainter to draw with.
[in]	xMap	Scale map for the x axis.
[in]	yMap	Scale map for the y axis.
[in]	canvasRect	The canvas rectangle (unused).

drawBar()

virtual void QmitkHistogram::drawBar ( QPainter *  painter, Qt::Orientation  o, const QRect &  rect  ) const

protectedvirtual

Draw a single histogram bar with 3D shading.

Parameters

[in]	painter	The QPainter.
[in]	o	The bar orientation.
[in]	rect	The rectangle defining the bar area.

setBaseline()

void QmitkHistogram::setBaseline

(

double

reference

)

Set the baseline reference value for the histogram.

Parameters

[in]

reference

The y value of the baseline.

setColor()

void QmitkHistogram::setColor

(

const QColor &

color

)

Set the fill color for the histogram bars.

Parameters

[in]

color

The bar color.

setData()

void QmitkHistogram::setData

(

const QwtIntervalSeriesData &

data

)

Set the interval series data for the histogram.

Parameters

[in]

data

The interval series data containing bin intervals and values.

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

• QmitkHistogram.h