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#include <qwt_plot_textlabel.h>

类 QwtPlotTextLabel 继承关系图:

类
class	PrivateData

Public 成员函数
	QwtPlotTextLabel ()
	构造函数

virtual	~QwtPlotTextLabel ()
	析构函数

virtual int	rtti () const override
	获取运行时类型信息

void	setText (const QwtText &)
	设置文本

QwtText	text () const
	获取文本

void	setMargin (int margin)
	设置边距

int	margin () const
	获取边距

virtual QRectF	textRect (const QRectF &, const QSizeF &) const
	对齐文本标签

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

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	updateScaleDiv (const QwtScaleDiv &, const QwtScaleDiv &)
	Update the item with new scale divisions

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

Protected 成员函数
virtual void	draw (QPainter *, const QwtScaleMap &, const QwtScaleMap &, const QRectF &) const override
	Draw the text label

void	invalidateCache ()
	使缓存的 pixmap 无效

Protected 成员函数继承自 QwtPlotItem
QwtGraphic	defaultIcon (const QBrush &, const QSizeF &) const
	Create a default 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 }
	运行时类型信息更多...

enum	ItemAttribute { Legend = 0x01 , AutoScale = 0x02 , Margins = 0x04 }
	绘图项属性更多...

enum	ItemInterest { ScaleInterest = 0x01 , LegendInterest = 0x02 }
	绘图项关注的事件类型更多...

enum	RenderHint { RenderAntialiased = 0x1 }
	渲染提示更多...

详细描述

显示文本标签的绘图项

构造及析构函数说明

◆ QwtPlotTextLabel()

QwtPlotTextLabel::QwtPlotTextLabel ( )

构造函数

◆ ~QwtPlotTextLabel()

QwtPlotTextLabel::~QwtPlotTextLabel ( )

virtual

析构函数

成员函数说明

◆ draw()

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

overrideprotectedvirtual

Draw the text label

参数

painter	Painter
xMap	x Scale Map
yMap	y Scale Map
canvasRect	Contents rectangle of the canvas in painter coordinates

参见: textRect()

实现了 QwtPlotItem.

◆ invalidateCache()

void QwtPlotTextLabel::invalidateCache ( )

protected

使缓存的 pixmap 无效

◆ margin()

int QwtPlotTextLabel::margin ( ) const

获取边距

◆ rtti()

int QwtPlotTextLabel::rtti ( ) const

overridevirtual

获取运行时类型信息

重载 QwtPlotItem .

◆ setMargin()

void QwtPlotTextLabel::setMargin ( int margin )

设置边距

◆ setText()

void QwtPlotTextLabel::setText ( const QwtText & text )

设置文本

◆ text()

QwtText QwtPlotTextLabel::text ( ) const

获取文本

◆ textRect()

QRectF QwtPlotTextLabel::textRect	(	const QRectF &	rect,
		const QSizeF &	textSize
	)		const