A class which draws a coordinate grid 更多...

#include <qwt_plot_grid.h>

类 QwtPlotGrid 继承关系图:

类
class	PrivateData

Public 成员函数
	QwtPlotGrid ()
	Constructor

virtual int	rtti () const override
	Get the runtime type information

void	enableX (bool)
	Enable or disable vertical grid lines

bool	xEnabled () const
	Check if vertical grid lines are enabled

void	enableY (bool)
	Enable or disable horizontal grid lines

bool	yEnabled () const
	Check if horizontal grid lines are enabled

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

bool	xMinEnabled () const
	Check if minor vertical grid lines are enabled

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

bool	yMinEnabled () const
	Check if minor horizontal grid lines are enabled

void	setXDiv (const QwtScaleDiv &)
	Assign an x axis scale division

const QwtScaleDiv &	xScaleDiv () const
	Get the scale division of the x axis

void	setYDiv (const QwtScaleDiv &)
	Assign a y axis scale division

const QwtScaleDiv &	yScaleDiv () const
	Get the scale division of the y axis

void	setPen (const QColor &, qreal width=0.0, Qt::PenStyle=Qt::SolidLine)
	Build and assign a pen for both major and minor grid lines

void	setPen (const QPen &)
	Assign a pen for both major and minor grid lines

void	setMajorPen (const QColor &, qreal width=0.0, Qt::PenStyle=Qt::SolidLine)
	Build and assign a pen for major grid lines

void	setMajorPen (const QPen &)
	Assign a pen for the major grid lines

const QPen &	majorPen () const
	Get the pen for the major grid lines

void	setMinorPen (const QColor &, qreal width=0.0, Qt::PenStyle=Qt::SolidLine)
	Build and assign a pen for the minor grid lines

void	setMinorPen (const QPen &)
	Assign a pen for the minor grid lines

const QPen &	minorPen () const
	Get the pen for the minor grid lines

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

virtual void	updateScaleDiv (const QwtScaleDiv &xScaleDiv, const QwtScaleDiv &yScaleDiv) override
	Update the grid to changes of the axes scale division

Public 成员函数继承自 QwtPlotItem
	QwtPlotItem ()
	Default constructor

	QwtPlotItem (const QString &title)
	Constructor with title as QString

	QwtPlotItem (const QwtText &title)
	Constructor with title as QwtText

virtual	~QwtPlotItem ()
	Destructor

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

void	detach ()
	Detach the item from the plot

QwtPlot *	plot () const
	Get the plot the item is attached to

void	setTitle (const QString &title)
	Set the title using a QString

void	setTitle (const QwtText &title)
	Set the title using a QwtText

const QwtText &	title () const
	Get the title

void	setItemAttribute (ItemAttribute, bool on=true)
	Set an item attribute

bool	testItemAttribute (ItemAttribute) const
	Test an item attribute

void	setItemInterest (ItemInterest, bool on=true)
	Set an item interest

bool	testItemInterest (ItemInterest) const
	Test an item interest

void	setRenderHint (RenderHint, bool on=true)
	Set a render hint

bool	testRenderHint (RenderHint) const
	Test a render hint

void	setRenderThreadCount (uint numThreads)
	Set the number of render threads

uint	renderThreadCount () const
	Get the number of render threads

void	setLegendIconSize (const QSize &)
	Set the legend icon size

QSize	legendIconSize () const
	Get the legend icon size

double	z () const
	Get the z-value

void	setZ (double z)
	Set the z-value

void	show ()
	Show the item

void	hide ()
	Hide the item

virtual void	setVisible (bool)
	Set the visibility

bool	isVisible () const
	Check if the item is visible

void	setAxes (QwtAxisId xAxis, QwtAxisId yAxis)
	Set both axes

void	setXAxis (QwtAxisId)
	Set the x-axis

QwtAxisId	xAxis () const
	Get the x-axis

void	setYAxis (QwtAxisId)
	Set the y-axis

QwtAxisId	yAxis () const
	Get the y-axis

virtual void	itemChanged ()
	Notify the plot that the item has changed

virtual void	legendChanged ()
	Notify the item that the legend has changed

virtual QRectF	boundingRect () const
	Get the bounding rectangle

virtual void	getCanvasMarginHint (const QwtScaleMap &xMap, const QwtScaleMap &yMap, const QRectF &canvasRect, double &left, double &top, double &right, double &bottom) const
	Get margin hints for the canvas

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

QRectF	scaleRect (const QwtScaleMap &, const QwtScaleMap &) const
	Calculate the scale rectangle

QRectF	paintRect (const QwtScaleMap &, const QwtScaleMap &) const
	Calculate the paint rectangle

virtual QList< QwtLegendData >	legendData () const
	Return legend data

virtual QwtGraphic	legendIcon (int index, const QSizeF &) const
	Return a legend icon

额外继承的成员函数
Public 类型继承自 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_PlotArrowMarker , Rtti_PlotBoxChart , Rtti_PlotUserItem = 1000 }
	Runtime type information 更多...

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

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

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

Protected 成员函数继承自 QwtPlotItem
QwtGraphic	defaultIcon (const QBrush &, const QSizeF &) const
	Create a default icon

详细描述

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.

构造及析构函数说明

◆ QwtPlotGrid()

QwtPlotGrid::QwtPlotGrid ( )

explicit

Constructor

Enables major grid, disables minor grid

Destructor

成员函数说明

◆ draw()

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

overridevirtual

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.

参数

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

实现了 QwtPlotItem.

◆ enableX()

void QwtPlotGrid::enableX ( bool on )

Enable or disable vertical grid lines

参数

[in] on Enable (true) or disable

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

◆ enableXMin()

void QwtPlotGrid::enableXMin ( bool on )

Enable or disable minor vertical grid lines

参数

[in] on Enable (true) or disable

参见: enableX()

◆ enableY()

void QwtPlotGrid::enableY ( bool on )

Enable or disable horizontal grid lines

参数

[in] on Enable (true) or disable

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

◆ enableYMin()

void QwtPlotGrid::enableYMin ( bool on )

Enable or disable minor horizontal grid lines

参数

[in] on Enable (true) or disable

参见: enableY()

◆ majorPen()

const QPen & QwtPlotGrid::majorPen ( ) const

Get the pen for the major grid lines

返回: Pen for major grid lines

参见: setMajorPen(), setMinorPen(), setPen()

◆ minorPen()

const QPen & QwtPlotGrid::minorPen ( ) const

Get the pen for the minor grid lines

返回: Pen for minor grid lines

参见: setMinorPen(), setMajorPen(), setPen()

◆ rtti()

int QwtPlotGrid::rtti ( ) const

overridevirtual

Get the runtime type information

返回: QwtPlotItem::Rtti_PlotGrid

重载 QwtPlotItem .

◆ setMajorPen() [1/2]

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

Build and assign a pen for major grid lines

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

参数

[in]	color	Pen color
[in]	width	Pen width
[in]	style	Pen style

参见: pen(), brush()

◆ setMajorPen() [2/2]

void QwtPlotGrid::setMajorPen ( const QPen & pen )

Assign a pen for the major grid lines

参数

[in] pen Pen

参见: majorPen(), setMinorPen(), setPen()

◆ 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) which makes it non cosmetic (see QPen::isCosmetic()). This method has been introduced to hide this incompatibility.

参数

[in]	color	Pen color
[in]	width	Pen width
[in]	style	Pen style

参见: pen(), brush()

◆ setMinorPen() [2/2]

void QwtPlotGrid::setMinorPen ( const QPen & pen )

Assign a pen for the minor grid lines

参数

[in] pen Pen

参见: minorPen(), setMajorPen(), setPen()

◆ 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) which makes it non cosmetic (see QPen::isCosmetic()). This method has been introduced to hide this incompatibility.

参数

[in]	color	Pen color
[in]	width	Pen width
[in]	style	Pen style

参见: pen(), brush()

◆ setPen() [2/2]

void QwtPlotGrid::setPen ( const QPen & pen )

Assign a pen for both major and minor grid lines

参数

[in] pen Pen

参见: setMajorPen(), setMinorPen()

◆ setXDiv()

void QwtPlotGrid::setXDiv ( const QwtScaleDiv & scaleDiv )

Assign an x axis scale division

参数

[in] scaleDiv Scale division

◆ setYDiv()

void QwtPlotGrid::setYDiv ( const QwtScaleDiv & scaleDiv )

Assign a y axis scale division

参数

[in] scaleDiv Scale division

◆ updateScaleDiv()

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

overridevirtual

Update the grid to changes of the axes scale division

参数

[in]	xScaleDiv	Scale division of the x-axis
[in]	yScaleDiv	Scale division of the y-axis

参见: QwtPlot::updateAxes()

重载 QwtPlotItem .

◆ xEnabled()

bool QwtPlotGrid::xEnabled ( ) const

Check if vertical grid lines are enabled

返回: true if vertical grid lines are enabled

参见: enableX()

◆ xMinEnabled()

bool QwtPlotGrid::xMinEnabled ( ) const

Check if minor vertical grid lines are enabled

返回: true if minor vertical grid lines are enabled

参见: enableXMin()

◆ xScaleDiv()

const QwtScaleDiv & QwtPlotGrid::xScaleDiv ( ) const

Get the scale division of the x axis

返回: Scale division of the x axis

◆ yEnabled()

bool QwtPlotGrid::yEnabled ( ) const

Check if horizontal grid lines are enabled

返回: true if horizontal grid lines are enabled

参见: enableY()

◆ yMinEnabled()

bool QwtPlotGrid::yMinEnabled ( ) const

Check if minor horizontal grid lines are enabled

返回: true if minor horizontal grid lines are enabled

参见: enableYMin()

◆ yScaleDiv()

const QwtScaleDiv & QwtPlotGrid::yScaleDiv ( ) const

Get the scale division of the y axis

返回: Scale division of the y axis

该类的文档由以下文件生成:

/home/runner/work/QWT/QWT/src/plot/qwt_plot_grid.h
/home/runner/work/QWT/QWT/src/plot/qwt_plot_grid.cpp

类

Public 成员函数

额外继承的成员函数

详细描述

构造及析构函数说明

◆ QwtPlotGrid()

成员函数说明

◆ draw()

◆ 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()