A class which draws a coordinate grid. More...

#include <qwt_plot_grid.h>

Inheritance diagram for QwtPlotGrid:

Classes
class	PrivateData

Public Member Functions
virtual void	draw (QPainter *, const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect) const QWT_OVERRIDE
	Draw the grid. More...

void	enableX (bool)
	Enable or disable vertical grid lines. More...

void	enableXMin (bool)
	Enable or disable minor vertical grid lines. More...

void	enableY (bool)
	Enable or disable horizontal grid lines. More...

void	enableYMin (bool)
	Enable or disable minor horizontal grid lines. More...

const QPen &	majorPen () const

const QPen &	minorPen () const

	QwtPlotGrid ()
	Enables major grid, disables minor grid. More...

virtual int	rtti () const QWT_OVERRIDE

void	setMajorPen (const QColor &, qreal width=0.0, Qt::PenStyle=Qt::SolidLine)

void	setMajorPen (const QPen &)

void	setMinorPen (const QColor &, qreal width=0.0, Qt::PenStyle=Qt::SolidLine)

void	setMinorPen (const QPen &)

void	setPen (const QColor &, qreal width=0.0, Qt::PenStyle=Qt::SolidLine)

void	setPen (const QPen &)

void	setXDiv (const QwtScaleDiv &)

void	setYDiv (const QwtScaleDiv &)

virtual void	updateScaleDiv (const QwtScaleDiv &xScaleDiv, const QwtScaleDiv &yScaleDiv) QWT_OVERRIDE

bool	xEnabled () const

bool	xMinEnabled () const

const QwtScaleDiv &	xScaleDiv () const

bool	yEnabled () const

bool	yMinEnabled () const

const QwtScaleDiv &	yScaleDiv () const

virtual	~QwtPlotGrid ()
	Destructor. More...

Public Member Functions inherited from QwtPlotItem
void	attach (QwtPlot *plot)
	Attach the item to a plot. More...

virtual QRectF	boundingRect () const

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

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. More...

void	hide ()
	Hide the item. More...

bool	isVisible () const

virtual void	itemChanged ()

virtual void	legendChanged ()

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

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

QSize	legendIconSize () const

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

QwtPlot *	plot () const
	Return attached plot. More...

	QwtPlotItem ()

	QwtPlotItem (const QString &title)

	QwtPlotItem (const QwtText &title)

uint	renderThreadCount () const

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

void	setAxes (QwtAxisId xAxis, QwtAxisId yAxis)

void	setItemAttribute (ItemAttribute, bool on=true)

void	setItemInterest (ItemInterest, bool on=true)

void	setLegendIconSize (const QSize &)

void	setRenderHint (RenderHint, bool on=true)

void	setRenderThreadCount (uint numThreads)

void	setTitle (const QString &title)

void	setTitle (const QwtText &title)

virtual void	setVisible (bool)

void	setXAxis (QwtAxisId)

void	setYAxis (QwtAxisId)

void	setZ (double z)
	Set the z value. More...

void	show ()
	Show the item. More...

bool	testItemAttribute (ItemAttribute) const

bool	testItemInterest (ItemInterest) const

bool	testRenderHint (RenderHint) const

const QwtText &	title () const

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

QwtAxisId	xAxis () const
	Return xAxis. More...

QwtAxisId	yAxis () const
	Return yAxis. More...

double	z () const

virtual	~QwtPlotItem ()
	Destroy the QwtPlotItem. More...

Private Member Functions
void	drawLines (QPainter *, const QRectF &, Qt::Orientation, const QwtScaleMap &, const QList< double > &) const

Private Attributes
PrivateData *	m_data

Additional Inherited Members
Public Types inherited from QwtPlotItem
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...

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...

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

Detailed Description

A class which draws a coordinate grid.

The QwtPlotGrid class can be used to draw a coordinate grid. A coordinate grid consists of major and minor vertical and horizontal grid lines. The locations of the grid lines are determined by the X and Y scale divisions which can be assigned with setXDiv() and setYDiv(). The draw() member draws the grid within a bounding rectangle.

Definition at line 33 of file qwt_plot_grid.h.

Constructor & Destructor Documentation

◆ QwtPlotGrid()

QwtPlotGrid::QwtPlotGrid ( )

explicit

Enables major grid, disables minor grid.

Definition at line 48 of file qwt_plot_grid.cpp.

◆ ~QwtPlotGrid()

QwtPlotGrid::~QwtPlotGrid ( )

virtual

Destructor.

Definition at line 58 of file qwt_plot_grid.cpp.

Member Function Documentation

◆ draw()

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

virtual

Draw the grid.

The grid is drawn into the bounding rectangle such that grid lines begin and end at the rectangle's borders. The X and Y maps are used to map the scale divisions into the drawing region screen.

Parameters

painter	Painter
xMap	X axis map
yMap	Y axis
canvasRect	Contents rectangle of the plot canvas

Implements QwtPlotItem.

Definition at line 282 of file qwt_plot_grid.cpp.

◆ drawLines()

void QwtPlotGrid::drawLines	(	QPainter *	painter,
		const QRectF &	canvasRect,
		Qt::Orientation	orientation,
		const QwtScaleMap &	scaleMap,
		const QList< double > &	values
	)		const

private

Definition at line 327 of file qwt_plot_grid.cpp.

◆ enableX()

void QwtPlotGrid::enableX ( bool on )

Enable or disable vertical grid lines.

Parameters

on	Enable (true) or disable

See also: Minor grid lines can be enabled or disabled with enableXMin()

Definition at line 76 of file qwt_plot_grid.cpp.

◆ enableXMin()

void QwtPlotGrid::enableXMin ( bool on )

Enable or disable minor vertical grid lines.

Parameters

on	Enable (true) or disable

See also: enableX()

Definition at line 108 of file qwt_plot_grid.cpp.

◆ enableY()

void QwtPlotGrid::enableY ( bool on )

Enable or disable horizontal grid lines.

Parameters

on	Enable (true) or disable

See also: Minor grid lines can be enabled or disabled with enableYMin()

Definition at line 92 of file qwt_plot_grid.cpp.

◆ enableYMin()

void QwtPlotGrid::enableYMin ( bool on )

Enable or disable minor horizontal grid lines.

Parameters

on	Enable (true) or disable

See also: enableY()

Definition at line 124 of file qwt_plot_grid.cpp.

◆ majorPen()

const QPen & QwtPlotGrid::majorPen ( ) const

Returns: the pen for the major grid lines

See also: setMajorPen(), setMinorPen(), setPen()

Definition at line 367 of file qwt_plot_grid.cpp.

◆ minorPen()

const QPen & QwtPlotGrid::minorPen ( ) const

Returns: the pen for the minor grid lines

See also: setMinorPen(), setMajorPen(), setPen()

Definition at line 376 of file qwt_plot_grid.cpp.

◆ rtti()

int QwtPlotGrid::rtti ( ) const

virtual

Returns: QwtPlotItem::Rtti_PlotGrid

Reimplemented from QwtPlotItem.

Definition at line 64 of file qwt_plot_grid.cpp.

◆ setMajorPen() [1/2]

void QwtPlotGrid::setMajorPen	(	const QColor &	color,
		qreal	width = `0.0`,
		Qt::PenStyle	style = `Qt::SolidLine`
	)

Build and assign a pen for both major grid lines

In Qt5 the default pen width is 1.0 ( 0.0 in Qt4 ) what makes it non cosmetic ( see QPen::isCosmetic() ). This method has been introduced to hide this incompatibility.

Parameters

color	Pen color
width	Pen width
style	Pen style

See also: pen(), brush()

Definition at line 212 of file qwt_plot_grid.cpp.

◆ setMajorPen() [2/2]

void QwtPlotGrid::setMajorPen ( const QPen & pen )

Assign a pen for the major grid lines

Parameters

pen Pen

See also: majorPen(), setMinorPen(), setPen()

Definition at line 223 of file qwt_plot_grid.cpp.

◆ setMinorPen() [1/2]

void QwtPlotGrid::setMinorPen	(	const QColor &	color,
		qreal	width = `0.0`,
		Qt::PenStyle	style = `Qt::SolidLine`
	)

Build and assign a pen for the minor grid lines

In Qt5 the default pen width is 1.0 ( 0.0 in Qt4 ) what makes it non cosmetic ( see QPen::isCosmetic() ). This method has been introduced to hide this incompatibility.

Parameters

color	Pen color
width	Pen width
style	Pen style

See also: pen(), brush()

Definition at line 247 of file qwt_plot_grid.cpp.

◆ setMinorPen() [2/2]

void QwtPlotGrid::setMinorPen ( const QPen & pen )

Assign a pen for the minor grid lines

Parameters

pen Pen

See also: minorPen(), setMajorPen(), setPen()

Definition at line 258 of file qwt_plot_grid.cpp.

◆ setPen() [1/2]

void QwtPlotGrid::setPen	(	const QColor &	color,
		qreal	width = `0.0`,
		Qt::PenStyle	style = `Qt::SolidLine`
	)

Build and assign a pen for both major and minor grid lines

In Qt5 the default pen width is 1.0 ( 0.0 in Qt4 ) what makes it non cosmetic ( see QPen::isCosmetic() ). This method has been introduced to hide this incompatibility.

Parameters

color	Pen color
width	Pen width
style	Pen style

See also: pen(), brush()

Definition at line 176 of file qwt_plot_grid.cpp.

◆ setPen() [2/2]

void QwtPlotGrid::setPen ( const QPen & pen )

Assign a pen for both major and minor grid lines

Parameters

pen Pen

See also: setMajorPen(), setMinorPen()

Definition at line 187 of file qwt_plot_grid.cpp.

◆ setXDiv()

void QwtPlotGrid::setXDiv ( const QwtScaleDiv & scaleDiv )

Assign an x axis scale division

Parameters

scaleDiv Scale division

Definition at line 140 of file qwt_plot_grid.cpp.

◆ setYDiv()

void QwtPlotGrid::setYDiv ( const QwtScaleDiv & scaleDiv )

Assign a y axis division

Parameters

scaleDiv Scale division

Definition at line 154 of file qwt_plot_grid.cpp.

◆ updateScaleDiv()

void QwtPlotGrid::updateScaleDiv	(	const QwtScaleDiv &	xScaleDiv,
		const QwtScaleDiv &	yScaleDiv
	)

virtual

Update the grid to changes of the axes scale division

Parameters

xScaleDiv	Scale division of the x-axis
yScaleDiv	Scale division of the y-axis

See also: QwtPlot::updateAxes()

Reimplemented from QwtPlotItem.

Definition at line 438 of file qwt_plot_grid.cpp.

◆ xEnabled()

bool QwtPlotGrid::xEnabled ( ) const

Returns: true if vertical grid lines are enabled

See also: enableX()

Definition at line 385 of file qwt_plot_grid.cpp.

◆ xMinEnabled()

bool QwtPlotGrid::xMinEnabled ( ) const

Returns: true if minor vertical grid lines are enabled

See also: enableXMin()

Definition at line 394 of file qwt_plot_grid.cpp.

◆ xScaleDiv()

const QwtScaleDiv & QwtPlotGrid::xScaleDiv ( ) const

Returns: the scale division of the x axis

Definition at line 419 of file qwt_plot_grid.cpp.

◆ yEnabled()

bool QwtPlotGrid::yEnabled ( ) const

Returns: true if horizontal grid lines are enabled

See also: enableY()

Definition at line 403 of file qwt_plot_grid.cpp.

◆ yMinEnabled()

bool QwtPlotGrid::yMinEnabled ( ) const

Returns: true if minor horizontal grid lines are enabled

See also: enableYMin()

Definition at line 412 of file qwt_plot_grid.cpp.

◆ yScaleDiv()

const QwtScaleDiv & QwtPlotGrid::yScaleDiv ( ) const

Returns: the scale division of the y axis

Definition at line 425 of file qwt_plot_grid.cpp.

Member Data Documentation

◆ m_data

PrivateData* QwtPlotGrid::m_data

private

Definition at line 86 of file qwt_plot_grid.h.

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

Classes

Public Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ QwtPlotGrid()

◆ ~QwtPlotGrid()

Member Function Documentation

◆ draw()

◆ drawLines()

◆ enableX()

◆ enableXMin()

◆ enableY()

◆ enableYMin()

◆ majorPen()

◆ minorPen()

◆ rtti()

◆ setMajorPen() [1/2]

◆ setMajorPen() [2/2]

◆ setMinorPen() [1/2]

◆ setMinorPen() [2/2]

◆ setPen() [1/2]

◆ setPen() [2/2]

◆ setXDiv()

◆ setYDiv()

◆ updateScaleDiv()

◆ xEnabled()

◆ xMinEnabled()

◆ xScaleDiv()

◆ yEnabled()

◆ yMinEnabled()

◆ yScaleDiv()

Member Data Documentation

◆ m_data