#include <qwt_polar_magnifier.h>

类 QwtPolarMagnifier 继承关系图:

类
class	PrivateData

Public 槽
virtual void	rescale (double factor) override
	Rescale the plot

void	unzoom ()
	Unzoom the plot

Public 成员函数
	QwtPolarMagnifier (QwtPolarCanvas *)
	Constructor

virtual	~QwtPolarMagnifier ()
	Destructor

void	setUnzoomKey (int key, int modifiers)
	Set the unzoom key

void	getUnzoomKey (int &key, int &modifiers) const
	Get the unzoom key

QwtPolarPlot *	plot ()
	Get the plot

const QwtPolarPlot *	plot () const
	Get the plot (const version)

QwtPolarCanvas *	canvas ()
	Get the canvas

const QwtPolarCanvas *	canvas () const
	Get the canvas (const version)

Public 成员函数继承自 QwtMagnifier
	QwtMagnifier (QWidget *)
	构造函数

virtual	~QwtMagnifier ()
	析构函数

QWidget *	parentWidget ()
	返回发生重新缩放的父控件

const QWidget *	parentWidget () const
	返回发生重新缩放的父控件

void	setEnabled (bool)
	启用/禁用放大器

bool	isEnabled () const
	返回放大器是否启用

void	setMouseFactor (double)
	更改鼠标因子

double	mouseFactor () const
	返回鼠标因子

void	setMouseButton (Qt::MouseButton, Qt::KeyboardModifiers=Qt::NoModifier)
	设置用于放大/缩小的鼠标按钮

void	getMouseButton (Qt::MouseButton &, Qt::KeyboardModifiers &) const
	获取用于放大/缩小的鼠标按钮和修饰键

void	setWheelFactor (double)
	更改滚轮因子

double	wheelFactor () const
	返回滚轮因子

void	setWheelModifiers (Qt::KeyboardModifiers)
	设置使用滚轮放大/缩小时的键盘修饰键

Qt::KeyboardModifiers	wheelModifiers () const
	返回滚轮修饰键

void	setKeyFactor (double)
	更改按键因子

double	keyFactor () const
	返回按键因子

void	setZoomInKey (int key, Qt::KeyboardModifiers=Qt::NoModifier)
	设置用于放大的按键

void	getZoomInKey (int &key, Qt::KeyboardModifiers &) const
	获取放大键的设置

void	setZoomOutKey (int key, Qt::KeyboardModifiers=Qt::NoModifier)
	设置用于缩小的按键

void	getZoomOutKey (int &key, Qt::KeyboardModifiers &) const
	获取缩小键的设置

virtual bool	eventFilter (QObject , QEvent ) override
	事件过滤器

Protected 成员函数
virtual void	widgetKeyPressEvent (QKeyEvent *) override
	Handle key press events

Protected 成员函数继承自 QwtMagnifier
virtual void	rescale (double factor)=0
	重新缩放父控件

virtual void	widgetMousePressEvent (QMouseEvent *)
	Handle a mouse press event for the observed widget.

virtual void	widgetMouseReleaseEvent (QMouseEvent *)
	Handle a mouse release event for the observed widget.

virtual void	widgetMouseMoveEvent (QMouseEvent *)
	Handle a mouse move event for the observed widget.

virtual void	widgetWheelEvent (QWheelEvent *)
	Handle a wheel event for the observed widget.

virtual void	widgetKeyReleaseEvent (QKeyEvent *)
	Handle a key release event for the observed widget.

详细描述

QwtPolarMagnifier 通过逐步放大提供缩放功能

构造及析构函数说明

◆ QwtPolarMagnifier()

QwtPolarMagnifier::QwtPolarMagnifier ( QwtPolarCanvas * canvas )

explicit

Constructor

构造函数

◆ ~QwtPolarMagnifier()

QwtPolarMagnifier::~QwtPolarMagnifier ( )

virtual

Destructor

析构函数

成员函数说明

◆ canvas() [1/2]

QwtPolarCanvas * QwtPolarMagnifier::canvas ( )

Get the canvas

获取观察的绘图画布

◆ canvas() [2/2]

const QwtPolarCanvas * QwtPolarMagnifier::canvas ( ) const

Get the canvas (const version)

获取观察的绘图画布（常量版本）

◆ getUnzoomKey()

void QwtPolarMagnifier::getUnzoomKey	(	int &	key,
		int &	modifiers
	)		const

Get the unzoom key

获取用于取消缩放的按键和修饰键

◆ plot() [1/2]

QwtPolarPlot * QwtPolarMagnifier::plot ( )

Get the plot

获取观察的绘图

◆ plot() [2/2]

const QwtPolarPlot * QwtPolarMagnifier::plot ( ) const

Get the plot (const version)

获取观察的绘图（常量版本）

◆ rescale

void QwtPolarMagnifier::rescale ( double factor )

overridevirtualslot

Rescale the plot

放大/缩小缩放区域

◆ setUnzoomKey()

void QwtPolarMagnifier::setUnzoomKey	(	int	key,
		int	modifiers
	)

Set the unzoom key

设置用于取消缩放的按键和修饰键

◆ unzoom

void QwtPolarMagnifier::unzoom ( )

slot

Unzoom the plot

取消绘图控件的缩放

◆ widgetKeyPressEvent()

void QwtPolarMagnifier::widgetKeyPressEvent ( QKeyEvent * event )

overrideprotectedvirtual

Handle key press events

Handle a key press event for the observed widget.

参数

event Key event

重载 QwtMagnifier .

该类的文档由以下文件生成:

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

类

Public 槽

Public 成员函数

Protected 成员函数