QwtPolarCachePanner 提供极坐标绘图画布的平移功能更多...

#include <qwt_polar_cache_panner.h>

类 QwtPolarCachePanner 继承关系图:

Public 槽
virtual void	movePlot (int dx, int dy)
	Move the plot

Public 成员函数
	QwtPolarCachePanner (QwtPolarCanvas *)
	Constructor

virtual	~QwtPolarCachePanner ()
	Destructor

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 QwtCachePanner
	QwtCachePanner (QWidget *parent)
	创建一个启用左键鼠标按钮的平移器

virtual	~QwtCachePanner ()
	析构函数

void	setEnabled (bool)
	启用/禁用平移器

bool	isEnabled () const
	返回平移器是否启用

void	setMouseButton (Qt::MouseButton, Qt::KeyboardModifiers=Qt::NoModifier)
	更改用于平移的鼠标按钮和修饰键

void	getMouseButton (Qt::MouseButton &button, Qt::KeyboardModifiers &) const
	获取用于平移的鼠标按钮和修饰键

void	setAbortKey (int key, Qt::KeyboardModifiers=Qt::NoModifier)
	更改中止键

void	getAbortKey (int &key, Qt::KeyboardModifiers &) const
	获取中止键和修饰键

void	setCursor (const QCursor &)
	更改平移时激活的光标

const QCursor	cursor () const
	返回平移时激活的光标

void	setOrientations (Qt::Orientations)
	设置启用平移的方向

Qt::Orientations	orientations () const
	返回启用平移的方向

bool	isOrientationEnabled (Qt::Orientation) const
	检查某个方向是否启用

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

Protected 成员函数
virtual void	widgetMousePressEvent (QMouseEvent *) override
	Handle mouse press events

Protected 成员函数继承自 QwtCachePanner
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	widgetKeyPressEvent (QKeyEvent *)
	Handle a key press event for the observed widget.

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

virtual void	paintEvent (QPaintEvent *) override
	绘制事件

virtual QBitmap	contentsMask () const
	计算平移控件内容的遮罩

virtual QPixmap	grab () const
	将控件捕获到 pixmap 中

额外继承的成员函数
信号继承自 QwtCachePanner
void	panned (int dx, int dy)
	平移完成时发出的信号

void	moved (int dx, int dy)
	控件移动但平移未完成时发出的信号

详细描述

QwtPolarCachePanner 提供极坐标绘图画布的平移功能

构造及析构函数说明

◆ QwtPolarCachePanner()

QwtPolarCachePanner::QwtPolarCachePanner ( QwtPolarCanvas * canvas )

explicit

Constructor

为极坐标绘图画布创建绘图平移器

◆ ~QwtPolarCachePanner()

QwtPolarCachePanner::~QwtPolarCachePanner ( )

virtual

Destructor

析构函数

成员函数说明

◆ canvas() [1/2]

QwtPolarCanvas * QwtPolarCachePanner::canvas ( )

Get the canvas

获取观察的绘图画布

◆ canvas() [2/2]

const QwtPolarCanvas * QwtPolarCachePanner::canvas ( ) const

Get the canvas (const version)

获取观察的绘图画布（常量版本）

◆ movePlot

void QwtPolarCachePanner::movePlot	(	int	dx,
		int	dy
	)

virtualslot

Move the plot

根据 dx/dy 调整缩放区域

◆ plot() [1/2]

QwtPolarPlot * QwtPolarCachePanner::plot ( )

Get the plot

获取观察的绘图

◆ plot() [2/2]

const QwtPolarPlot * QwtPolarCachePanner::plot ( ) const

Get the plot (const version)

获取观察的绘图（常量版本）

◆ widgetMousePressEvent()

void QwtPolarCachePanner::widgetMousePressEvent ( QMouseEvent * event )

overrideprotectedvirtual

Handle mouse press events

Block panning when the plot zoom factor is >= 1.0.

参数

event Mouse event

重载 QwtCachePanner .

该类的文档由以下文件生成:

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

Public 槽

Public 成员函数

Protected 成员函数

额外继承的成员函数