QwtDial 类提供圆形范围控件更多...

#include <qwt_dial.h>

类 QwtDial 继承关系图:

类
class	PrivateData

Public 类型
enum	Shadow { Plain = QFrame::Plain , Raised = QFrame::Raised , Sunken = QFrame::Sunken }
	框架阴影更多...

enum	Mode { RotateNeedle , RotateScale }
	控制指针或刻度是否旋转的模式更多...

Public 成员函数
	QwtDial (QWidget *parent=nullptr)
	Constructor

virtual	~QwtDial ()
	Destructor

void	setFrameShadow (Shadow)
	Set the frame shadow

Shadow	frameShadow () const
	Return the frame shadow

void	setLineWidth (int)
	Set the line width

int	lineWidth () const
	Return the line width

void	setMode (Mode)
	Set the mode

Mode	mode () const
	Return the mode

void	setScaleArc (double minArc, double maxArc)
	Set the scale arc range

void	setMinScaleArc (double)
	Set the minimum scale arc

double	minScaleArc () const
	Return the minimum scale arc

void	setMaxScaleArc (double)
	Set the maximum scale arc

double	maxScaleArc () const
	Return the maximum scale arc

virtual void	setOrigin (double)
	Set the origin

double	origin () const
	Return the origin

void	setNeedle (QwtDialNeedle *)
	Set the needle

const QwtDialNeedle *	needle () const
	Return the needle (const version)

QwtDialNeedle *	needle ()
	Return the needle

QRect	boundingRect () const
	Return the bounding rectangle

QRect	innerRect () const
	Return the inner rectangle

virtual QRect	scaleInnerRect () const
	Return the scale inner rectangle

virtual QSize	sizeHint () const override
	Return the size hint

virtual QSize	minimumSizeHint () const override
	Return the minimum size hint

void	setScaleDraw (QwtRoundScaleDraw *)
	Set the scale draw

QwtRoundScaleDraw *	scaleDraw ()
	Return the scale draw

const QwtRoundScaleDraw *	scaleDraw () const
	Return the scale draw (const version)

Public 成员函数继承自 QwtAbstractSlider
	QwtAbstractSlider (QWidget *parent=nullptr)
	Constructor for QwtAbstractSlider (English only)

virtual	~QwtAbstractSlider ()
	Destructor for QwtAbstractSlider (English only)

void	setValid (bool)
	Set whether the slider is valid (English only)

bool	isValid () const
	Return whether the slider is valid (English only)

double	value () const
	Return the current value (English only)

void	setWrapping (bool)
	Set whether wrapping is enabled (English only)

bool	wrapping () const
	Return whether wrapping is enabled (English only)

void	setTotalSteps (uint)
	Set the total number of steps (English only)

uint	totalSteps () const
	Return the total number of steps (English only)

void	setSingleSteps (uint)
	Set the number of single steps (English only)

uint	singleSteps () const
	Return the number of single steps (English only)

void	setPageSteps (uint)
	Set the number of page steps (English only)

uint	pageSteps () const
	Return the number of page steps (English only)

void	setStepAlignment (bool)
	Set whether step alignment is enabled (English only)

bool	stepAlignment () const
	Return whether step alignment is enabled (English only)

void	setTracking (bool)
	Set whether tracking is enabled (English only)

bool	isTracking () const
	Return whether tracking is enabled (English only)

void	setReadOnly (bool)
	Set whether the slider is read-only (English only)

bool	isReadOnly () const
	Return whether the slider is read-only (English only)

void	setInvertedControls (bool)
	Set whether controls are inverted (English only)

bool	invertedControls () const
	Return whether controls are inverted (English only)

Public 成员函数继承自 QwtAbstractScale
	QwtAbstractScale (QWidget *parent=nullptr)
	QwtAbstractScale 构造函数

virtual	~QwtAbstractScale ()
	QwtAbstractScale 析构函数

void	setScale (double lowerBound, double upperBound)
	通过区间边界指定刻度

void	setScale (const QwtInterval &)
	通过区间对象指定刻度

void	setScale (const QwtScaleDiv &)
	通过刻度划分指定刻度

const QwtScaleDiv &	scaleDiv () const
	返回刻度划分

void	setLowerBound (double value)
	设置刻度的下界

double	lowerBound () const
	返回刻度的下界

void	setUpperBound (double value)
	设置刻度的上界

double	upperBound () const
	返回刻度的上界

void	setScaleStepSize (double stepSize)
	设置用于计算刻度划分的步长

double	scaleStepSize () const
	返回步长提示值

void	setScaleMaxMajor (int ticks)
	设置主刻度间隔的最大数量

int	scaleMaxMinor () const
	返回次刻度间隔的最大数量

void	setScaleMaxMinor (int ticks)
	设置次刻度间隔的最大数量

int	scaleMaxMajor () const
	返回主刻度间隔的最大数量

void	setScaleEngine (QwtScaleEngine *)
	设置刻度引擎

const QwtScaleEngine *	scaleEngine () const
	返回刻度引擎（常量版本）

QwtScaleEngine *	scaleEngine ()
	返回刻度引擎（非常量版本）

int	transform (double) const
	将刻度值转换为控件坐标

double	invTransform (int) const
	将控件坐标转换为刻度值

bool	isInverted () const
	检查刻度是否反向

double	minimum () const
	返回最小边界

double	maximum () const
	返回最大边界

const QwtScaleMap &	scaleMap () const
	返回刻度映射

Protected 成员函数
virtual void	wheelEvent (QWheelEvent *) override
	Wheel Event handler

virtual void	paintEvent (QPaintEvent *) override
	Paint the dial

virtual void	changeEvent (QEvent *) override
	Change Event handler

virtual void	drawFrame (QPainter *)
	Draw the frame around the dial

virtual void	drawContents (QPainter *) const
	Draw the contents inside the frame

virtual void	drawFocusIndicator (QPainter *) const
	Draw the focus indicator

void	invalidateCache ()
	使用于加速重绘的内部缓存失效

virtual void	drawScale (QPainter *, const QPointF &center, double radius) const
	Draw the scale

virtual void	drawScaleContents (QPainter *painter, const QPointF &center, double radius) const
	Draw the contents inside the scale

virtual void	drawNeedle (QPainter *, const QPointF &, double radius, double direction, QPalette::ColorGroup) const
	Draw the needle

virtual double	scrolledTo (const QPoint &) const override
	Determine the value for a new position of the slider handle.

virtual bool	isScrollPosition (const QPoint &) const override
	Determine what to do when the user presses a mouse button.

virtual void	sliderChange () override
	Handle slider changes (English only)

virtual void	scaleChange () override
	Invalidate the internal caches and call QwtAbstractSlider::scaleChange()

Protected 成员函数继承自 QwtAbstractSlider
virtual void	mousePressEvent (QMouseEvent *) override
	Handle mouse press events (English only)

virtual void	mouseReleaseEvent (QMouseEvent *) override
	Handle mouse release events (English only)

virtual void	mouseMoveEvent (QMouseEvent *) override
	Handle mouse move events (English only)

virtual void	keyPressEvent (QKeyEvent *) override
	Handle key press events (English only)

void	incrementValue (int stepCount)
	Increment the value by a number of steps (English only)

double	incrementedValue (double value, int stepCount) const
	Calculate incremented value (English only)

Protected 成员函数继承自 QwtAbstractScale
void	rescale (double lowerBound, double upperBound, double stepSize)
	Recalculate scale and update scale draw (English only)

void	setAbstractScaleDraw (QwtAbstractScaleDraw *)
	Set the scale draw object (English only)

const QwtAbstractScaleDraw *	abstractScaleDraw () const
	Return the scale draw (const version) (English only)

QwtAbstractScaleDraw *	abstractScaleDraw ()
	Return the scale draw (non-const version) (English only)

void	updateScaleDraw ()
	Update the scale draw (English only)

属性
int	lineWidth

Shadow	frameShadow

Mode	mode

double	origin

double	minScaleArc

double	maxScaleArc

属性继承自 QwtAbstractSlider
double	value

uint	totalSteps

uint	singleSteps

uint	pageSteps

bool	stepAlignment

bool	readOnly

bool	tracking

bool	wrapping

bool	invertedControls

属性继承自 QwtAbstractScale
double	lowerBound

double	upperBound

int	scaleMaxMajor

int	scaleMaxMinor

double	scaleStepSize

额外继承的成员函数
Public 槽继承自 QwtAbstractSlider
void	setValue (double value)
	Set the slider value (English only)

信号继承自 QwtAbstractSlider
void	valueChanged (double value)
	通知值变化

void	sliderPressed ()
	当用户按下滑块的可移动部分时发出的信号

void	sliderReleased ()
	当用户释放滑块的可移动部分时发出的信号

void	sliderMoved (double value)
	当用户用鼠标移动滑块时发出的信号

详细描述

QwtDial 类提供圆形范围控件

成员枚举类型说明

◆ Mode

enum QwtDial::Mode

控制指针或刻度是否旋转的模式

枚举值
RotateNeedle	The needle is rotating
RotateScale	The needle is fixed, the scales are rotating

◆ Shadow

enum QwtDial::Shadow

框架阴影

枚举值
Plain	QFrame::Plain
Raised	QFrame::Raised
Sunken	QFrame::Sunken

构造及析构函数说明

◆ QwtDial()

QwtDial::QwtDial ( QWidget * parent = nullptr )

explicit

Constructor

构造函数

◆ ~QwtDial()

QwtDial::~QwtDial ( )

virtual

Destructor

析构函数

成员函数说明

◆ boundingRect()

QRect QwtDial::boundingRect ( ) const

Return the bounding rectangle

返回表盘的边界矩形（含框架）

◆ changeEvent()

void QwtDial::changeEvent ( QEvent * event )

overrideprotectedvirtual

Change Event handler

参数

event Change event

Invalidates internal paint caches if necessary

重载 QwtAbstractScale .

◆ drawContents()

void QwtDial::drawContents ( QPainter * painter ) const

protectedvirtual

Draw the contents inside the frame

QPalette::Window is the background color outside of the frame. QPalette::Base is the background color inside the frame. QPalette::WindowText is the background color inside the scale.

参数

painter Painter

参见: boundingRect(), innerRect(), scaleInnerRect(), QWidget::setPalette()

◆ drawFocusIndicator()

void QwtDial::drawFocusIndicator ( QPainter * painter ) const

protectedvirtual

Draw the focus indicator

参数

painter Painter

◆ drawFrame()

void QwtDial::drawFrame ( QPainter * painter )

protectedvirtual

Draw the frame around the dial

参数

painter Painter

参见: lineWidth(), frameShadow()

◆ drawNeedle()

void QwtDial::drawNeedle	(	QPainter *	painter,
		const QPointF &	center,
		double	radius,
		double	direction,
		QPalette::ColorGroup	colorGroup
	)		const

protectedvirtual

Draw the needle

参数

painter	Painter
center	Center of the dial
radius	Length for the needle
direction	Direction of the needle in degrees, counter clockwise
colorGroup	ColorGroup

被 QwtAnalogClock 重载.

◆ drawScale()

void QwtDial::drawScale	(	QPainter *	painter,
		const QPointF &	center,
		double	radius
	)		const

protectedvirtual

Draw the scale

参数

painter	Painter
center	Center of the dial
radius	Radius of the scale

◆ drawScaleContents()

void QwtDial::drawScaleContents	(	QPainter *	painter,
		const QPointF &	center,
		double	radius
	)		const

protectedvirtual

Draw the contents inside the scale

Paints nothing.

参数

painter	Painter
center	Center of the contents circle
radius	Radius of the contents circle

被 QwtCompass 重载.

◆ frameShadow()

QwtDial::Shadow QwtDial::frameShadow ( ) const

Return the frame shadow

返回框架阴影

◆ innerRect()

QRect QwtDial::innerRect ( ) const

Return the inner rectangle

返回框架内圆的边界矩形

◆ invalidateCache()

void QwtDial::invalidateCache ( )

protected

使用于加速重绘的内部缓存失效

◆ isScrollPosition()

bool QwtDial::isScrollPosition ( const QPoint & pos ) const

overrideprotectedvirtual

Determine what to do when the user presses a mouse button.

参数

pos	Mouse position

返回值

True,when the inner circle contains pos

参见: scrolledTo()

实现了 QwtAbstractSlider.

◆ lineWidth()

int QwtDial::lineWidth ( ) const

Return the line width

返回框架的线宽

◆ maxScaleArc()

double QwtDial::maxScaleArc ( ) const

Return the maximum scale arc

返回刻度弧的上限

◆ minimumSizeHint()

QSize QwtDial::minimumSizeHint ( ) const

overridevirtual

Return the minimum size hint

返回最小尺寸提示

◆ minScaleArc()

double QwtDial::minScaleArc ( ) const

Return the minimum scale arc

返回刻度弧的下限

◆ mode()

QwtDial::Mode QwtDial::mode ( ) const

Return the mode

返回表盘的模式

◆ needle() [1/2]

QwtDialNeedle * QwtDial::needle ( )

Return the needle

返回指针

◆ needle() [2/2]

const QwtDialNeedle * QwtDial::needle ( ) const

Return the needle (const version)

返回指针

◆ origin()

double QwtDial::origin ( ) const

Return the origin

原点是刻度和指针相对的角度

◆ paintEvent()

void QwtDial::paintEvent ( QPaintEvent * event )

overrideprotectedvirtual

Paint the dial

参数

event Paint event

◆ scaleChange()

void QwtDial::scaleChange ( )

overrideprotectedvirtual

Invalidate the internal caches and call QwtAbstractSlider::scaleChange()

重载 QwtAbstractSlider .

◆ scaleDraw() [1/2]

QwtRoundScaleDraw * QwtDial::scaleDraw ( )

Return the scale draw

返回刻度绘制器

◆ scaleDraw() [2/2]

const QwtRoundScaleDraw * QwtDial::scaleDraw ( ) const

Return the scale draw (const version)

返回刻度绘制器

◆ scaleInnerRect()

QRect QwtDial::scaleInnerRect ( ) const

virtual

Return the scale inner rectangle

返回刻度内的矩形

◆ scrolledTo()

double QwtDial::scrolledTo ( const QPoint & pos ) const

overrideprotectedvirtual

Determine the value for a new position of the slider handle.

参数

pos	Mouse position

返回: Value for the mouse position

参见: isScrollPosition()

实现了 QwtAbstractSlider.

◆ setFrameShadow()

void QwtDial::setFrameShadow ( Shadow shadow )

Set the frame shadow

从框架样式设置框架阴影值

◆ setLineWidth()

void QwtDial::setLineWidth ( int lineWidth )

Set the line width

设置框架的线宽

◆ setMaxScaleArc()

void QwtDial::setMaxScaleArc ( double max )

Set the maximum scale arc

设置刻度弧的上限

◆ setMinScaleArc()

void QwtDial::setMinScaleArc ( double min )

Set the minimum scale arc

设置刻度弧的下限

◆ setMode()

void QwtDial::setMode ( Mode mode )

Set the mode

更改表盘的模式

◆ setNeedle()

void QwtDial::setNeedle ( QwtDialNeedle * needle )

Set the needle

为表盘设置指针

◆ setOrigin()

void QwtDial::setOrigin ( double origin )

virtual

Set the origin

更改原点

◆ setScaleArc()

void QwtDial::setScaleArc	(	double	minArc,
		double	maxArc
	)

Set the scale arc range

更改刻度的弧度范围

◆ setScaleDraw()

void QwtDial::setScaleDraw ( QwtRoundScaleDraw * scaleDraw )

Set the scale draw

设置单独的刻度绘制器

◆ sizeHint()

QSize QwtDial::sizeHint ( ) const

overridevirtual

Return the size hint

返回尺寸提示

◆ sliderChange()

void QwtDial::sliderChange ( )

overrideprotectedvirtual

Handle slider changes (English only)

处理滑块变化

重载 QwtAbstractSlider .

◆ wheelEvent()

void QwtDial::wheelEvent ( QWheelEvent * event )

overrideprotectedvirtual

Wheel Event handler

参数

event Wheel event

重载 QwtAbstractSlider .

该类的文档由以下文件生成:

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

类

Public 类型

Public 成员函数

Protected 成员函数

属性

额外继承的成员函数

详细描述

成员枚举类型说明

◆ Mode

◆ Shadow

构造及析构函数说明

◆ QwtDial()

◆ ~QwtDial()

成员函数说明

◆ boundingRect()

◆ changeEvent()

◆ drawContents()

◆ drawFocusIndicator()

◆ drawFrame()

◆ drawNeedle()

◆ drawScale()

◆ drawScaleContents()

◆ frameShadow()

◆ innerRect()

◆ invalidateCache()

◆ isScrollPosition()

◆ lineWidth()

◆ maxScaleArc()

◆ minimumSizeHint()

◆ minScaleArc()

◆ mode()

◆ needle() [1/2]

◆ needle() [2/2]

◆ origin()

◆ paintEvent()

◆ scaleChange()

◆ scaleDraw() [1/2]

◆ scaleDraw() [2/2]

◆ scaleInnerRect()

◆ scrolledTo()

◆ setFrameShadow()

◆ setLineWidth()

◆ setMaxScaleArc()

◆ setMinScaleArc()

◆ setMode()

◆ setNeedle()

◆ setOrigin()

◆ setScaleArc()

◆ setScaleDraw()

◆ sizeHint()

◆ sliderChange()

◆ wheelEvent()