#include <qwt_plot_intervalcurve.h>

Inheritance diagram for QwtPlotIntervalCurve:

Public Types
enum	CurveStyle { NoCurve, Tube, UserCurve = 100 }
enum	PaintAttribute { ClipPolygons = 0x01, ClipSymbol = 0x02 }
typedef QFlags< PaintAttribute >	PaintAttributes

Public Member Functions
	QwtPlotIntervalCurve (const QString &title=QString::null)
	QwtPlotIntervalCurve (const QwtText &title)
virtual	~QwtPlotIntervalCurve ()
virtual QRectF	boundingRect () const
const QBrush &	brush () const
virtual void	drawLegendIdentifier (QPainter *, const QRectF &) const
virtual void	drawSeries (QPainter *p, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect, int from, int to) const
const QPen &	pen () const
virtual int	rtti () const
void	setBrush (const QBrush &)
void	setPaintAttribute (PaintAttribute, bool on=true)
void	setPen (const QPen &)
void	setSamples (const QVector< QwtIntervalSample > &)
void	setStyle (CurveStyle style)
void	setSymbol (const QwtIntervalSymbol *)
CurveStyle	style () const
const QwtIntervalSymbol *	symbol () const
bool	testPaintAttribute (PaintAttribute) const
Public Member Functions inherited from QwtPlotSeriesItem< QwtIntervalSample >
	QwtPlotSeriesItem (const QString &title=QString::null)
	QwtPlotSeriesItem (const QwtText &title)
virtual	~QwtPlotSeriesItem ()
QwtSeriesData < QwtIntervalSample > *	data ()
const QwtSeriesData < QwtIntervalSample > *	data () const
size_t	dataSize () const
QwtIntervalSample	sample (int index) const
void	setData (QwtSeriesData< QwtIntervalSample > *)
virtual void	updateScaleDiv (const QwtScaleDiv &, const QwtScaleDiv &)
Public Member Functions inherited from QwtPlotAbstractSeriesItem
	QwtPlotAbstractSeriesItem (const QString &title=QString::null)
	QwtPlotAbstractSeriesItem (const QwtText &title)
virtual	~QwtPlotAbstractSeriesItem ()
virtual void	draw (QPainter *p, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &) const
Qt::Orientation	orientation () const
void	setOrientation (Qt::Orientation)
Public Member Functions inherited from QwtPlotItem
	QwtPlotItem (const QwtText &title=QwtText())
virtual	~QwtPlotItem ()
void	attach (QwtPlot *plot)
void	detach ()
void	hide ()
bool	isVisible () const
virtual void	itemChanged ()
virtual QWidget *	legendItem () const
QRectF	paintRect (const QwtScaleMap &, const QwtScaleMap &) const
QwtPlot *	plot () const
QRectF	scaleRect (const QwtScaleMap &, const QwtScaleMap &) const
void	setAxes (int xAxis, int yAxis)
void	setItemAttribute (ItemAttribute, bool on=true)
void	setRenderHint (RenderHint, bool on=true)
void	setTitle (const QString &title)
void	setTitle (const QwtText &title)
virtual void	setVisible (bool)
void	setXAxis (int axis)
void	setYAxis (int axis)
void	setZ (double z)
void	show ()
bool	testItemAttribute (ItemAttribute) const
bool	testRenderHint (RenderHint) const
const QwtText &	title () const
virtual void	updateLegend (QwtLegend *) const
int	xAxis () const
int	yAxis () const
double	z () const
Public Member Functions inherited from QwtLegendItemManager
	QwtLegendItemManager ()
virtual	~QwtLegendItemManager ()

Protected Member Functions
virtual void	drawSymbols (QPainter *, const QwtIntervalSymbol &, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect, int from, int to) const
virtual void	drawTube (QPainter *, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect, int from, int to) const
void	init ()

Additional Inherited Members
Protected Attributes inherited from QwtPlotSeriesItem< QwtIntervalSample >
QwtSeriesData < QwtIntervalSample > *	d_series

Detailed Description

QwtPlotIntervalCurve represents a series of samples, where each value is associated with an interval ( $[y1,y2] = f(x)$ ).

The representation depends on the style() and an optional symbol() that is displayed for each interval. QwtPlotIntervalCurve might be used to disply error bars or the area between 2 curves.

Member Enumeration Documentation

enum QwtPlotIntervalCurve::CurveStyle

Curve styles. The default setting is QwtPlotIntervalCurve::Tube.

See also:: setStyle(), style()

Enumerator:

NoCurve	Don't draw a curve. Note: This doesn't affect the symbols.
Tube	Build 2 curves from the upper and lower limits of the intervals and draw them with the pen(). The area between the curves is filled with the brush().
UserCurve	Styles >= QwtPlotIntervalCurve::UserCurve are reserved for derived classes that overload drawSeries() with additional application specific curve types.

enum QwtPlotIntervalCurve::PaintAttribute

Attributes to modify the drawing algorithm.

See also:: setPaintAttribute(), testPaintAttribute()

Enumerator:

ClipPolygons	Clip polygons before painting them. In situations, where points are far outside the visible area (f.e when zooming deep) this might be a substantial improvement for the painting performance.
ClipSymbol	Check if a symbol is on the plot canvas before painting it.

Constructor & Destructor Documentation

QwtPlotIntervalCurve::QwtPlotIntervalCurve ( const QString & title = QString::null )

explicit

Constructor

Parameters:

title Title of the curve

QwtPlotIntervalCurve::QwtPlotIntervalCurve ( const QwtText & title )

explicit

Constructor

Parameters:

title Title of the curve

Member Function Documentation

QRectF QwtPlotIntervalCurve::boundingRect ( ) const

virtual

Returns:: Bounding rectangle of all samples. For an empty series the rectangle is invalid.

Reimplemented from QwtPlotSeriesItem< QwtIntervalSample >.

const QBrush & QwtPlotIntervalCurve::brush ( ) const

Returns:: Brush used to fill the area in Tube style()

See also:: setBrush(), setStyle(), CurveStyle

void QwtPlotIntervalCurve::drawLegendIdentifier	(	QPainter *	painter,
		const QRectF &	rect
	)		const

virtual

Draw the identifier for the legend.

In case of Tube style() a plain rectangle filled with the brush() is painted. If a symbol is assigned it is painted centered into rect.

Parameters:

painter	Painter
rect	Bounding rectangle for the identifier

Reimplemented from QwtLegendItemManager.

void QwtPlotIntervalCurve::drawSeries	(	QPainter *	painter,
		const QwtScaleMap &	xMap,
		const QwtScaleMap &	yMap,
		const QRectF &	canvasRect,
		int	from,
		int	to
	)		const

virtual

Draw a subset of the samples

Parameters:

painter	Painter
xMap	Maps x-values into pixel coordinates.
yMap	Maps y-values into pixel coordinates.
canvasRect	Contents rect of the canvas
from	Index of the first sample to be painted
to	Index of the last sample to be painted. If to < 0 the series will be painted to its last sample.

See also:: drawTube(), drawSymbols()

Implements QwtPlotAbstractSeriesItem.

void QwtPlotIntervalCurve::drawSymbols	(	QPainter *	painter,
		const QwtIntervalSymbol &	symbol,
		const QwtScaleMap &	xMap,
		const QwtScaleMap &	yMap,
		const QRectF &	canvasRect,
		int	from,
		int	to
	)		const

protectedvirtual

Draw symbols for a subset of the samples

Parameters:

painter	Painter
symbol	Interval symbol
xMap	x map
yMap	y map
canvasRect	Contents rect of the canvas
from	Index of the first sample to be painted
to	Index of the last sample to be painted

See also:: setSymbol(), drawSeries(), drawTube()

void QwtPlotIntervalCurve::drawTube	(	QPainter *	painter,
		const QwtScaleMap &	xMap,
		const QwtScaleMap &	yMap,
		const QRectF &	canvasRect,
		int	from,
		int	to
	)		const

protectedvirtual

Draw a tube

Builds 2 curves from the upper and lower limits of the intervals and draws them with the pen(). The area between the curves is filled with the brush().

Parameters:

painter	Painter
xMap	Maps x-values into pixel coordinates.
yMap	Maps y-values into pixel coordinates.
canvasRect	Contents rect of the canvas
from	Index of the first sample to be painted
to	Index of the last sample to be painted. If to < 0 the series will be painted to its last sample.