QwtPlotCanvasZoomer 为绘图画布的所有坐标轴提供缩放功能更多...

#include <qwt_plot_canvas_zoomer.h>

类 QwtPlotCanvasZoomer 继承关系图:

类
class	PrivateData

Public 槽
virtual void	zoom (int offset)
	按指定偏移量在缩放堆栈中导航

virtual void	appendZoom (const QList< QwtPlotCanvasZoomState > &rect)
	将新的缩放状态追加到缩放堆栈

Public 槽继承自 QwtPicker
void	setEnabled (bool)
	启用或禁用选择器

信号
void	zoomed (const QList< QwtPlotCanvasZoomState > &state)
	当绘图被放大或缩小时发出的信号

信号继承自 QwtPicker
void	activated (bool on)
	当选择器被激活时发出的信号

void	selected (const QPolygon &polygon)
	在选择结束时发出选定点的信号

void	appended (const QPoint &pos)
	当一个点被添加到选择时发出的信号

void	moved (const QPoint &pos)
	当选择的最后一个添加点被移动时发出的信号

void	removed (const QPoint &pos)
	当选择的最后一个添加点被移除时发出的信号

void	changed (const QPolygon &selection)
	当活动选择被更改时发出的信号

Public 成员函数
	QwtPlotCanvasZoomer (QWidget *canvas, bool doReplot=true)
	为绘图画布创建缩放器的构造函数

virtual void	setZoomBase (bool doReplot=true)
	将缩放基础设置为当前坐标轴范围

void	setAutoReplot (bool on=true)
	启用或禁用缩放操作后的自动重绘

bool	isAutoReplot () const
	检查是否启用了自动重绘

QList< QwtPlotCanvasZoomState >	zoomBase () const
	获取基础缩放状态（初始未缩放状态）

QList< QwtPlotCanvasZoomState >	zoomState () const
	获取当前缩放状态

void	setMaxStackDepth (int)
	设置缩放堆栈的最大深度

int	maxStackDepth () const
	获取缩放堆栈的最大深度

const QStack< QList< QwtPlotCanvasZoomState > > &	zoomStack () const
	获取包含所有缩放状态的缩放堆栈

uint	zoomStateIndex () const

Public 成员函数继承自 QwtCanvasPicker
	QwtCanvasPicker (QWidget *canvas)
	构造函数，带画布控件

	~QwtCanvasPicker ()
	析构函数

QwtPlot *	plot ()
	获取关联的绘图

const QwtPlot *	plot () const
	获取关联的绘图（const 版本）

QWidget *	canvas ()
	获取画布控件

const QWidget *	canvas () const
	获取画布控件（const 版本）

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

	QwtPicker (RubberBand rubberBand, DisplayMode trackerMode, QWidget *)

void	setStateMachine (QwtPickerMachine *)
	设置状态机并删除前一个

const QwtPickerMachine *	stateMachine () const
	返回分配的状态机（const）

QwtPickerMachine *	stateMachine ()
	返回分配的状态机

void	setRubberBand (RubberBand)
	设置橡皮筋样式

RubberBand	rubberBand () const
	返回橡皮筋样式

void	setTrackerMode (DisplayMode)
	设置追踪器的显示模式

DisplayMode	trackerMode () const
	返回追踪器显示模式

void	setResizeMode (ResizeMode)
	设置调整大小模式

ResizeMode	resizeMode () const
	返回调整大小模式

void	setRubberBandPen (const QPen &)
	设置橡皮筋的画笔

QPen	rubberBandPen () const
	返回橡皮筋画笔

void	setTrackerPen (const QPen &)
	设置追踪器的画笔

QPen	trackerPen () const
	返回追踪器画笔

void	setTrackerFont (const QFont &)
	设置追踪器的字体

QFont	trackerFont () const
	返回追踪器字体

bool	isEnabled () const
	启用时返回 true，否则返回 false

bool	isActive () const
	选择器在 begin() 和 end() 之间处于活动状态

virtual bool	eventFilter (QObject , QEvent ) override
	处理事件的事件过滤器

QWidget *	parentWidget ()
	返回发生选择的父控件

const QWidget *	parentWidget () const
	返回发生选择的父控件（const）

virtual QPainterPath	pickArea () const
	找到观察部件上可能发生选择的区域

virtual void	drawRubberBand (QPainter *) const
	根据橡皮筋样式绘制橡皮筋

virtual void	drawTracker (QPainter *) const
	绘制追踪器

virtual QRegion	trackerMask () const
	计算追踪器覆盖层的掩码

virtual QRegion	rubberBandMask () const
	计算橡皮筋覆盖层的掩码

virtual QwtText	trackerText (const QPoint &pos) const
	返回位置的标签

virtual QRect	trackerRect (const QFont &) const
	从追踪器当前位置计算追踪器文本的边界矩形

virtual void	setTrackerPosition (const QPoint &pos)
	手动设置追踪器位置

QPoint	trackerPosition () const
	返回追踪器的当前位置

QPolygon	selection () const
	返回选定的点

void	update ()

void	setActive (bool on)

Public 成员函数继承自 QwtEventPattern
	QwtEventPattern ()
	构造函数

virtual	~QwtEventPattern ()
	析构函数

void	initMousePattern (int numButtons)
	根据鼠标按钮数量设置默认鼠标模式

void	initKeyPattern ()
	设置默认按键模式

void	setMousePattern (MousePatternCode, Qt::MouseButton button, Qt::KeyboardModifiers=Qt::NoModifier)
	更改一个鼠标模式

void	setKeyPattern (KeyPatternCode, int key, Qt::KeyboardModifiers modifiers=Qt::NoModifier)
	更改一个按键模式

void	setMousePattern (const QVector< MousePattern > &)
	更改鼠标事件模式

void	setKeyPattern (const QVector< KeyPattern > &)
	更改按键事件模式

const QVector< MousePattern > &	mousePattern () const
	返回鼠标模式向量

const QVector< KeyPattern > &	keyPattern () const
	返回按键模式向量

QVector< MousePattern > &	mousePattern ()
	返回鼠标模式向量

QVector< KeyPattern > &	keyPattern ()
	返回按键模式向量

bool	mouseMatch (MousePatternCode, const QMouseEvent *) const
	将鼠标事件与事件模式进行比较

bool	keyMatch (KeyPatternCode, const QKeyEvent *) const
	将按键事件与事件模式进行比较

Protected 成员函数
virtual void	rescale ()

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

virtual void	widgetKeyPressEvent (QKeyEvent *) override
	Handle a key press event for the observed widget.

virtual void	begin () override
	Open a selection setting the state to active

virtual bool	end (bool ok=true) override
	Close a selection setting the state to inactive.

virtual bool	accept (QPolygon &) const override
	Validate and fix up the selection

Protected 成员函数继承自 QwtPicker
virtual QPolygon	adjustedPoints (const QPolygon &) const
	将 pickedPoints() 映射为 selection()

virtual void	transition (const QEvent *)
	Passes an event to the state machine and executes the resulting commands.

virtual void	append (const QPoint &)
	Append a point to the selection and update rubber band and tracker.

virtual void	move (const QPoint &)
	Move the last point of the selection The moved() signal is emitted.

virtual void	remove ()
	Remove the last point of the selection The removed() signal is emitted.

virtual void	reset ()
	Reset the state machine and terminate ( end(false) ) the selection

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

virtual void	widgetMouseDoubleClickEvent (QMouseEvent *)
	Handle mouse double click 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.

virtual void	widgetEnterEvent (QEvent *)
	Handle a enter event for the observed widget.

virtual void	widgetLeaveEvent (QEvent *)
	Handle a leave event for the observed widget.

virtual void	stretchSelection (const QSize &oldSize, const QSize &newSize)
	Scale the selection by the ratios of oldSize and newSize The changed() signal is emitted.

virtual void	updateDisplay ()
	Update the state of rubber band and tracker label

const QwtWidgetOverlay *	rubberBandOverlay () const
	返回显示橡皮筋的覆盖层

const QwtWidgetOverlay *	trackerOverlay () const
	返回显示追踪器文本的覆盖层

const QPolygon &	pickedPoints () const
	返回到目前为止收集的点

Protected 成员函数继承自 QwtEventPattern
virtual bool	mouseMatch (const MousePattern &, const QMouseEvent *) const
	Compare a mouse event with an event pattern.

virtual bool	keyMatch (const KeyPattern &, const QKeyEvent *) const
	Compare a key event with an event pattern.

额外继承的成员函数
Public 类型继承自 QwtPicker
enum	RubberBand { NoRubberBand = 0 , HLineRubberBand , VLineRubberBand , CrossRubberBand , RectRubberBand , EllipseRubberBand , PolygonRubberBand , UserRubberBand = 100 }
	橡皮筋样式更多...

enum	DisplayMode { AlwaysOff , AlwaysOn , ActiveOnly }
	显示模式更多...

enum	ResizeMode { Stretch , KeepSize }
	控制当观察部件调整大小时对选定点的处理方式更多...

Public 类型继承自 QwtEventPattern
enum	MousePatternCode { MouseSelect1 , MouseSelect2 , MouseSelect3 , MouseSelect4 , MouseSelect5 , MouseSelect6 , MousePatternCount }
	Symbolic mouse input codes 更多...

enum	KeyPatternCode { KeySelect1 , KeySelect2 , KeyAbort , KeyLeft , KeyRight , KeyUp , KeyDown , KeyRedo , KeyUndo , KeyHome , KeyPatternCount }
	Symbolic keyboard input codes 更多...

属性继承自 QwtPicker
bool	isEnabled

ResizeMode	resizeMode

DisplayMode	trackerMode

QPen	trackerPen

QFont	trackerFont

RubberBand	rubberBand

QPen	rubberBandPen

详细描述

QwtPlotCanvasZoomer 为绘图画布的所有坐标轴提供缩放功能

构造及析构函数说明

◆ QwtPlotCanvasZoomer()

QwtPlotCanvasZoomer::QwtPlotCanvasZoomer	(	QWidget *	canvas,
		bool	doReplot = `true`
	)

explicit

为绘图画布创建缩放器的构造函数

成员函数说明

◆ accept()

bool QwtPlotCanvasZoomer::accept ( QPolygon & selection ) const

overrideprotectedvirtual

Validate and fix up the selection

Accepts all selections unmodified

参数

selection Selection to validate and fix up

返回: true, when accepted, false otherwise

重载 QwtPicker .

◆ appendZoom

void QwtPlotCanvasZoomer::appendZoom ( const QList< QwtPlotCanvasZoomState > & rect )

virtualslot

将新的缩放状态追加到缩放堆栈

◆ begin()

void QwtPlotCanvasZoomer::begin ( )

overrideprotectedvirtual

Open a selection setting the state to active

参见: isActive(), end(), append(), move()

重载 QwtPicker .

◆ end()

bool QwtPlotCanvasZoomer::end ( bool ok = true )

overrideprotectedvirtual

Close a selection setting the state to inactive.

The selection is validated and maybe fixed by accept().

参数

ok	If true, complete the selection and emit a selected signal otherwise discard the selection.

返回: true if the selection is accepted, false otherwise

参见: isActive(), begin(), append(), move(), selected(), accept()

重载 QwtPicker .

◆ isAutoReplot()

bool QwtPlotCanvasZoomer::isAutoReplot ( ) const

检查是否启用了自动重绘

◆ maxStackDepth()

int QwtPlotCanvasZoomer::maxStackDepth ( ) const

获取缩放堆栈的最大深度

◆ setAutoReplot()

void QwtPlotCanvasZoomer::setAutoReplot ( bool on = true )

启用或禁用缩放操作后的自动重绘

◆ setMaxStackDepth()

void QwtPlotCanvasZoomer::setMaxStackDepth ( int depth )

设置缩放堆栈的最大深度

◆ setZoomBase()

void QwtPlotCanvasZoomer::setZoomBase ( bool doReplot = true )

virtual

将缩放基础设置为当前坐标轴范围

◆ widgetKeyPressEvent()

void QwtPlotCanvasZoomer::widgetKeyPressEvent ( QKeyEvent * keyEvent )

overrideprotectedvirtual

Handle a key press event for the observed widget.

Selections can be completely done by the keyboard. The arrow keys move the cursor, the abort key aborts a selection. All other keys are handled by the current state machine.

参数

keyEvent Key event

参见: eventFilter(), widgetMousePressEvent(), widgetMouseReleaseEvent(), widgetMouseDoubleClickEvent(), widgetMouseMoveEvent(), widgetWheelEvent(), widgetKeyReleaseEvent(), stateMachine(), QwtEventPattern::KeyPatternCode

重载 QwtPicker .

◆ widgetMouseReleaseEvent()

void QwtPlotCanvasZoomer::widgetMouseReleaseEvent ( QMouseEvent * mouseEvent )

overrideprotectedvirtual

Handle a mouse release event for the observed widget.

参数

mouseEvent Mouse event

参见: eventFilter(), widgetMousePressEvent(), widgetMouseDoubleClickEvent(), widgetMouseMoveEvent(), widgetWheelEvent(), widgetKeyPressEvent(), widgetKeyReleaseEvent()

重载 QwtPicker .

◆ zoom

void QwtPlotCanvasZoomer::zoom ( int offset )

virtualslot

按指定偏移量在缩放堆栈中导航

◆ zoomBase()

QList< QwtPlotCanvasZoomState > QwtPlotCanvasZoomer::zoomBase ( ) const

获取基础缩放状态（初始未缩放状态）

◆ zoomed

void QwtPlotCanvasZoomer::zoomed ( const QList< QwtPlotCanvasZoomState > & state )

signal

当绘图被放大或缩小时发出的信号

◆ zoomStack()

const QStack< QList< QwtPlotCanvasZoomState > > & QwtPlotCanvasZoomer::zoomStack ( ) const

获取包含所有缩放状态的缩放堆栈

◆ zoomState()

QList< QwtPlotCanvasZoomState > QwtPlotCanvasZoomer::zoomState ( ) const

获取当前缩放状态

该类的文档由以下文件生成:

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

类

Public 槽

信号

Public 成员函数

Protected 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

◆ QwtPlotCanvasZoomer()

成员函数说明

◆ accept()

◆ appendZoom

◆ begin()

◆ end()

◆ isAutoReplot()

◆ maxStackDepth()

◆ setAutoReplot()

◆ setMaxStackDepth()

◆ setZoomBase()

◆ widgetKeyPressEvent()

◆ widgetMouseReleaseEvent()

◆ zoom

◆ zoomBase()

◆ zoomed

◆ zoomStack()

◆ zoomState()