A plot item, which displays a recorded sequence of QPainter commands. More...

#include <qwt_plot_graphicitem.h>

Inheritance diagram for QwtPlotGraphicItem:

Public Member Functions
	QwtPlotGraphicItem (const QString &title=QString())
	Constructor.

	QwtPlotGraphicItem (const QwtText &title)
	Constructor.

virtual	~QwtPlotGraphicItem ()
	Destructor.

void	setGraphic (const QRectF &rect, const QwtGraphic &)

QwtGraphic	graphic () const

virtual QRectF	boundingRect () const override
	Bounding rectangle of the item.

virtual void	draw (QPainter *, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect) const override

virtual int	rtti () const override

Public Member Functions inherited from QwtPlotItem
	QwtPlotItem ()

	QwtPlotItem (const QString &title)

	QwtPlotItem (const QwtText &title)

virtual	~QwtPlotItem ()
	Destroy the QwtPlotItem.

void	attach (QwtPlot *plot)
	Attach the item to a plot.

void	detach ()
	This method detaches a QwtPlotItem from any QwtPlot it has been associated with.

QwtPlot *	plot () const
	Return attached plot.

void	setTitle (const QString &title)

void	setTitle (const QwtText &title)

const QwtText &	title () const

void	setItemAttribute (ItemAttribute, bool on=true)

bool	testItemAttribute (ItemAttribute) const

void	setItemInterest (ItemInterest, bool on=true)

bool	testItemInterest (ItemInterest) const

void	setRenderHint (RenderHint, bool on=true)

bool	testRenderHint (RenderHint) const

void	setRenderThreadCount (uint numThreads)

uint	renderThreadCount () const

void	setLegendIconSize (const QSize &)

QSize	legendIconSize () const

double	z () const

void	setZ (double z)
	Set the z value.

void	show ()
	Show the item.

void	hide ()
	Hide the item.

virtual void	setVisible (bool)

bool	isVisible () const

void	setAxes (QwtAxisId xAxis, QwtAxisId yAxis)

void	setXAxis (QwtAxisId)

QwtAxisId	xAxis () const
	Return xAxis.

void	setYAxis (QwtAxisId)

QwtAxisId	yAxis () const
	Return yAxis.

virtual void	itemChanged ()

virtual void	legendChanged ()

virtual void	getCanvasMarginHint (const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect, double &left, double &top, double &right, double &bottom) const
	Calculate a hint for the canvas margin.

virtual void	updateScaleDiv (const QwtScaleDiv &, const QwtScaleDiv &)
	Update the item to changes of the axes scale division.

virtual void	updateLegend (const QwtPlotItem *, const QList< QwtLegendData > &)
	Update the item to changes of the legend info.

QRectF	scaleRect (const QwtScaleMap &, const QwtScaleMap &) const
	Calculate the bounding scale rectangle of 2 maps.

QRectF	paintRect (const QwtScaleMap &, const QwtScaleMap &) const
	Calculate the bounding paint rectangle of 2 maps.

virtual QList< QwtLegendData >	legendData () const
	Return all information, that is needed to represent the item on the legend.

virtual QwtGraphic	legendIcon (int index, const QSizeF &) const

Additional Inherited Members
Public Types inherited from QwtPlotItem
enum	RttiValues { Rtti_PlotItem = 0 , Rtti_PlotGrid , Rtti_PlotScale , Rtti_PlotLegend , Rtti_PlotMarker , Rtti_PlotCurve , Rtti_PlotSpectroCurve , Rtti_PlotIntervalCurve , Rtti_PlotHistogram , Rtti_PlotSpectrogram , Rtti_PlotGraphic , Rtti_PlotTradingCurve , Rtti_PlotBarChart , Rtti_PlotMultiBarChart , Rtti_PlotShape , Rtti_PlotTextLabel , Rtti_PlotZone , Rtti_PlotVectorField , Rtti_PlotUserItem = 1000 }
	Runtime type information. More...

enum	ItemAttribute { Legend = 0x01 , AutoScale = 0x02 , Margins = 0x04 }
	Plot Item Attributes. More...

enum	ItemInterest { ScaleInterest = 0x01 , LegendInterest = 0x02 }
	Plot Item Interests. More...

enum	RenderHint { RenderAntialiased = 0x1 }
	Render hints. More...

typedef QFlags< ItemAttribute >	ItemAttributes

typedef QFlags< ItemInterest >	ItemInterests

typedef QFlags< RenderHint >	RenderHints

Protected Member Functions inherited from QwtPlotItem
QwtGraphic	defaultIcon (const QBrush &, const QSizeF &) const
	Return a default icon from a brush.

Detailed Description

A plot item, which displays a recorded sequence of QPainter commands.

QwtPlotGraphicItem renders a sequence of recorded painter commands into a specific plot area. Recording of painter commands can be done manually by QPainter or e.g. QSvgRenderer.

See also: QwtPlotShapeItem, QwtPlotSvgItem

Definition at line 29 of file qwt_plot_graphicitem.h.

Constructor & Destructor Documentation

◆ QwtPlotGraphicItem() [1/2]

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

explicit

Constructor.

Sets the following item attributes:

QwtPlotItem::AutoScale: true
QwtPlotItem::Legend: false

Parameters

title Title

Definition at line 32 of file qwt_plot_graphicitem.cpp.

◆ QwtPlotGraphicItem() [2/2]

QwtPlotGraphicItem::QwtPlotGraphicItem ( const QwtText & title )

explicit

Constructor.

Sets the following item attributes:

QwtPlotItem::AutoScale: true
QwtPlotItem::Legend: false

Parameters

title Title

Definition at line 47 of file qwt_plot_graphicitem.cpp.

◆ ~QwtPlotGraphicItem()

QwtPlotGraphicItem::~QwtPlotGraphicItem ( )

virtual

Destructor.

Definition at line 54 of file qwt_plot_graphicitem.cpp.

Member Function Documentation

◆ boundingRect()

QRectF QwtPlotGraphicItem::boundingRect ( ) const

overridevirtual

Bounding rectangle of the item.

Reimplemented from QwtPlotItem.

Definition at line 102 of file qwt_plot_graphicitem.cpp.

◆ draw()

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

overridevirtual

Draw the item

Parameters

painter	Painter
xMap	X-Scale Map
yMap	Y-Scale Map
canvasRect	Contents rect of the plot canvas

Implements QwtPlotItem.

Definition at line 115 of file qwt_plot_graphicitem.cpp.

◆ graphic()

QwtGraphic QwtPlotGraphicItem::graphic ( ) const

Returns: Recorded sequence of painter commands

See also: setGraphic()

Definition at line 96 of file qwt_plot_graphicitem.cpp.

◆ rtti()

int QwtPlotGraphicItem::rtti ( ) const

overridevirtual

Returns: QwtPlotItem::Rtti_PlotGraphic

Reimplemented from QwtPlotItem.

Definition at line 71 of file qwt_plot_graphicitem.cpp.

◆ setGraphic()

void QwtPlotGraphicItem::setGraphic	(	const QRectF &	rect,
		const QwtGraphic &	graphic )

Set the graphic to be displayed

Parameters

rect	Rectangle in plot coordinates
graphic	Recorded sequence of painter commands

Definition at line 82 of file qwt_plot_graphicitem.cpp.

Public Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ QwtPlotGraphicItem() [1/2]

◆ QwtPlotGraphicItem() [2/2]

◆ ~QwtPlotGraphicItem()

Member Function Documentation

◆ boundingRect()

◆ draw()

◆ graphic()

◆ rtti()

◆ setGraphic()