QwtAxisZoomer provides stacked zooming for a plot widget. More...

#include <qwt_plot_axis_zoomer.h>

Inheritance diagram for QwtPlotAxisZoomer:

Classes
class	PrivateData

Public Slots
void	moveBy (double dx, double dy)
	Move the current zoom rectangle.

virtual void	moveTo (const QPointF &)
	Move the the current zoom rectangle.

virtual void	zoom (const QRectF &)
	Zoom in.

virtual void	zoom (int offset)
	Zoom in or out.

Public Slots inherited from QwtPicker
void	setEnabled (bool)
	En/disable the picker.

Signals
void	zoomed (const QRectF &rect)
	A signal emitting the zoomRect(), when the plot has been zoomed in or out.

Signals inherited from QwtPlotPicker
void	selected (const QPointF &pos)
	A signal emitted in case of QwtPickerMachine::PointSelection.

void	selected (const QRectF &rect)
	A signal emitted in case of QwtPickerMachine::RectSelection.

void	selected (const QVector< QPointF > &pa)
	A signal emitting the selected points, at the end of a selection.

void	appended (const QPointF &pos)
	A signal emitted when a point has been appended to the selection.

void	moved (const QPointF &pos)
	A signal emitted whenever the last appended point of the selection has been moved.

Signals inherited from QwtPicker
void	activated (bool on)
	A signal indicating, when the picker has been activated.

void	selected (const QPolygon &polygon)
	A signal emitting the selected points, at the end of a selection.

void	appended (const QPoint &pos)
	A signal emitted when a point has been appended to the selection.

void	moved (const QPoint &pos)
	A signal emitted whenever the last appended point of the selection has been moved.

void	removed (const QPoint &pos)
	A signal emitted whenever the last appended point of the selection has been removed.

void	changed (const QPolygon &selection)
	A signal emitted when the active selection has been changed.

Public Member Functions
	QwtPlotAxisZoomer (QWidget *, bool doReplot=true)
	Create a zoomer for a plot canvas.

	QwtPlotAxisZoomer (QwtAxisId xAxis, QwtAxisId yAxis, QWidget *, bool doReplot=true)
	Create a zoomer for a plot canvas.

virtual void	setZoomBase (bool doReplot=true)
	Reinitialized the zoom stack with scaleRect() as base.

virtual void	setZoomBase (const QRectF &)
	Set the initial size of the zoomer.

QRectF	zoomBase () const

QRectF	zoomRect () const

virtual void	setAxes (QwtAxisId xAxis, QwtAxisId yAxis) QWT_OVERRIDE
	Reinitialize the axes, and set the zoom base to their scales.

void	setMaxStackDepth (int)
	Limit the number of recursive zoom operations to depth.

int	maxStackDepth () const

const QStack< QRectF > &	zoomStack () const

void	setZoomStack (const QStack< QRectF > &, int zoomRectIndex=-1)
	Assign a zoom stack.

uint	zoomRectIndex () const

Public Member Functions inherited from QwtPlotPicker
	QwtPlotPicker (QWidget *canvas)
	Create a plot picker.

virtual	~QwtPlotPicker ()
	Destructor.

	QwtPlotPicker (QwtAxisId xAxisId, QwtAxisId yAxisId, QWidget *)
	Create a plot picker.

	QwtPlotPicker (QwtAxisId xAxisId, QwtAxisId yAxisId, RubberBand rubberBand, DisplayMode trackerMode, QWidget *)
	Create a plot picker.

QwtAxisId	xAxis () const
	Return x axis.

QwtAxisId	yAxis () const
	Return y axis.

QwtPlot *	plot ()

const QwtPlot *	plot () const

QWidget *	canvas ()

const QWidget *	canvas () const

Public Member Functions inherited from QwtPicker
	QwtPicker (QWidget *parent)
	Constructor.

	QwtPicker (RubberBand rubberBand, DisplayMode trackerMode, QWidget *)
	Constructor.

virtual	~QwtPicker ()
	Destructor.

void	setStateMachine (QwtPickerMachine *)
	Set a state machine and delete the previous one.

const QwtPickerMachine *	stateMachine () const

QwtPickerMachine *	stateMachine ()

void	setRubberBand (RubberBand)
	Set the rubber band style.

RubberBand	rubberBand () const

void	setTrackerMode (DisplayMode)
	Set the display mode of the tracker.

DisplayMode	trackerMode () const

void	setResizeMode (ResizeMode)
	Set the resize mode.

ResizeMode	resizeMode () const

void	setRubberBandPen (const QPen &)
	Set the pen for the rubberband.

QPen	rubberBandPen () const

void	setTrackerPen (const QPen &)
	Set the pen for the tracker.

QPen	trackerPen () const

void	setTrackerFont (const QFont &)
	Set the font for the tracker.

QFont	trackerFont () const

bool	isEnabled () const

bool	isActive () const
	A picker is active between begin() and end().

virtual bool	eventFilter (QObject , QEvent ) QWT_OVERRIDE
	Event filter.

QWidget *	parentWidget ()
	Return the parent widget, where the selection happens.

const QWidget *	parentWidget () const
	Return the parent widget, where the selection happens.

virtual QPainterPath	pickArea () const
	Find the area of the observed widget, where selection might happen.

virtual void	drawRubberBand (QPainter *) const
	Draw a rubber band, depending on rubberBand()

virtual void	drawTracker (QPainter *) const
	Draw the tracker.

virtual QRegion	trackerMask () const
	Calculate the mask for the tracker overlay.

virtual QRegion	rubberBandMask () const
	Calculate the mask for the rubber band overlay.

virtual QRect	trackerRect (const QFont &) const
	Calculate the bounding rectangle for the tracker text from the current position of the tracker.

virtual void	setTrackerPosition (const QPoint &pos)
	强制设置trackerPosition，正常这个不需要调用，但有时候没有鼠标也想显示picker可以通过此函数来设置

QPoint	trackerPosition () const

QPolygon	selection () const

void	update ()

void	setActive (bool on)

Public Member Functions inherited from QwtEventPattern
	QwtEventPattern ()
	Constructor.

virtual	~QwtEventPattern ()
	Destructor.

void	initMousePattern (int numButtons)
	Set default mouse patterns, depending on the number of mouse buttons.

void	initKeyPattern ()
	Set default mouse patterns.

void	setMousePattern (MousePatternCode, Qt::MouseButton button, Qt::KeyboardModifiers=Qt::NoModifier)
	Change one mouse pattern.

void	setKeyPattern (KeyPatternCode, int key, Qt::KeyboardModifiers modifiers=Qt::NoModifier)
	Change one key pattern.

void	setMousePattern (const QVector< MousePattern > &)
	Change the mouse event patterns.

void	setKeyPattern (const QVector< KeyPattern > &)
	Change the key event patterns.

const QVector< MousePattern > &	mousePattern () const

const QVector< KeyPattern > &	keyPattern () const

QVector< MousePattern > &	mousePattern ()

QVector< KeyPattern > &	keyPattern ()

bool	mouseMatch (MousePatternCode, const QMouseEvent *) const
	Compare a mouse event with an event pattern.

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

Protected Member Functions
virtual void	rescale ()
	Adjust the observed plot to zoomRect()

virtual QSizeF	minZoomSize () const
	Limit zooming by a minimum rectangle.

virtual void	widgetMouseReleaseEvent (QMouseEvent *) QWT_OVERRIDE
	Qt::MidButton zooms out one position on the zoom stack, Qt::RightButton to the zoom base.

virtual void	widgetKeyPressEvent (QKeyEvent *) QWT_OVERRIDE
	Qt::Key_Plus zooms in, Qt::Key_Minus zooms out one position on the zoom stack, Qt::Key_Escape zooms out to the zoom base.

virtual void	begin () QWT_OVERRIDE
	Rejects selections, when the stack depth is too deep, or the zoomed rectangle is minZoomSize().

virtual bool	end (bool ok=true) QWT_OVERRIDE
	Expand the selected rectangle to minZoomSize() and zoom in if accepted.

virtual bool	accept (QPolygon &) const QWT_OVERRIDE
	Check and correct a selected rectangle.

Protected Member Functions inherited from QwtPlotPicker
QRectF	scaleRect () const

QRectF	invTransform (const QRect &) const
	Translate a rectangle from pixel into plot coordinates.

QRect	transform (const QRectF &) const
	Translate a rectangle from plot into pixel coordinates.

QPointF	invTransform (const QPoint &) const
	Translate a point from pixel into plot coordinates.

QPoint	transform (const QPointF &) const
	Translate a point from plot into pixel coordinates.

virtual QwtText	trackerText (const QPoint &) const QWT_OVERRIDE
	Translate a pixel position into a position string.

virtual QwtText	trackerTextF (const QPointF &) const
	Translate a position into a position string.

virtual void	move (const QPoint &) QWT_OVERRIDE
	Move the last point of the selection.

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

Protected Member Functions inherited from QwtPicker
virtual QPolygon	adjustedPoints (const QPolygon &) const
	Map the pickedPoints() into a selection()

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

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

const QwtWidgetOverlay *	trackerOverlay () const

const QPolygon &	pickedPoints () const
	Return the points, that have been collected so far.

Protected Member Functions inherited from 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.

Additional Inherited Members
Public Types inherited from QwtPicker
enum	RubberBand { NoRubberBand = 0 , HLineRubberBand , VLineRubberBand , CrossRubberBand , RectRubberBand , EllipseRubberBand , PolygonRubberBand , UserRubberBand = 100 }
	Rubber band style. More...

enum	DisplayMode { AlwaysOff , AlwaysOn , ActiveOnly }
	Display mode. More...

enum	ResizeMode { Stretch , KeepSize }
	Controls what to do with the selected points of an active selection when the observed widget is resized. More...

Public Types inherited from QwtEventPattern
enum	MousePatternCode { MouseSelect1 , MouseSelect2 , MouseSelect3 , MouseSelect4 , MouseSelect5 , MouseSelect6 , MousePatternCount }
	Symbolic mouse input codes. More...

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

Properties inherited from QwtPicker
bool	isEnabled

ResizeMode	resizeMode

DisplayMode	trackerMode

QPen	trackerPen

QFont	trackerFont

RubberBand	rubberBand

QPen	rubberBandPen

Detailed Description

QwtAxisZoomer provides stacked zooming for a plot widget.

QwtAxisZoomer selects rectangles from user inputs ( mouse or keyboard ) translates them into plot coordinates and adjusts the axes to them. The selection is supported by a rubber band and optionally by displaying the coordinates of the current mouse position.

Zooming can be repeated as often as possible, limited only by maxStackDepth() or minZoomSize(). Each rectangle is pushed on a stack.

The default setting how to select rectangles is a QwtPickerDragRectMachine with the following bindings:

QwtEventPattern::MouseSelect1
The first point of the zoom rectangle is selected by a mouse press, the second point from the position, where the mouse is released.
QwtEventPattern::KeySelect1
The first key press selects the first, the second key press selects the second point.
QwtEventPattern::KeyAbort
Discard the selection in the state, where the first point is selected.

To traverse the zoom stack the following bindings are used:

QwtEventPattern::MouseSelect3, QwtEventPattern::KeyUndo
Zoom out one position on the zoom stack
QwtEventPattern::MouseSelect6, QwtEventPattern::KeyRedo
Zoom in one position on the zoom stack
QwtEventPattern::MouseSelect2, QwtEventPattern::KeyHome
Zoom to the zoom base

QwtAxisZoomer 根据用户输入（鼠标或键盘）选择矩形区域，将其转换为绘图坐标，并相应地调整坐标轴。选择操作由“橡皮筋”辅助，并可选择显示当前鼠标位置的坐标。缩放操作可以无限次重复，仅受 maxStackDepth() 或 minZoomSize() 的限制。每个矩形都会被压入一个堆栈中。默认的矩形选择方式是一个 QwtPickerDragRectMachine，其绑定方式如下：
- QwtEventPattern::MouseSelect1
  缩放矩形的第一个点通过鼠标按下选择，第二个点则根据鼠标释放时的位置确定。
- QwtEventPattern::KeySelect1
  第一次按键选择第一个点，第二次按键选择第二个点。
- QwtEventPattern::KeyAbort
  在已选择第一个点的状态下，放弃当前选择。要遍历缩放堆栈，可使用以下绑定方式：

QwtEventPattern::MouseSelect3, QwtEventPattern::KeyUndo
在缩放堆栈中后退一步（缩小）

QwtEventPattern::MouseSelect6, QwtEventPattern::KeyRedo
在缩放堆栈中前进一步（放大）
QwtEventPattern::MouseSelect2, QwtEventPattern::KeyHome
缩放到基准视图（完全缩小）

The setKeyPattern() and setMousePattern() functions can be used to configure the zoomer actions. The following example shows, how to configure the 'I' and 'O' keys for zooming in and out one position on the zoom stack. The "Home" key is used to "unzoom" the plot.

可通过 setKeyPattern() 和 setMousePattern() 函数配置缩放器的行为。以下示例展示了如何将 'I' 和 'O' 键配置为在缩放堆栈中前进和后退一步，并使用 “Home” 键将绘图“取消缩放”到初始状态。

zoomer = new QwtAxisZoomer( plot );
zoomer->setKeyPattern( QwtEventPattern::KeyRedo, Qt::Key_I, Qt::ShiftModifier );
zoomer->setKeyPattern( QwtEventPattern::KeyUndo, Qt::Key_O, Qt::ShiftModifier );
zoomer->setKeyPattern( QwtEventPattern::KeyHome, Qt::Key_Home );

QwtAxisZoomer is tailored for plots with one x and y axis, but it is allowed to attach a second QwtAxisZoomer ( without rubber band and tracker ) for the other axes.

QwtAxisZoomer 专为具有一个 x 轴和一个 y 轴的绘图设计，但也允许附加第二个 QwtAxisZoomer（不带橡皮筋和追踪器）用于其他轴。

Note: The realtime example includes an derived zoomer class that adds scrollbars to the plot canvas.

See also: QwtPlotPanner, QwtPlotMagnifier

Constructor & Destructor Documentation

◆ QwtPlotAxisZoomer() [1/2]

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

explicit

Create a zoomer for a plot canvas.

The zoomer is set to those x- and y-axis of the parent plot of the canvas that are enabled. If both or no x-axis are enabled, the picker is set to QwtAxis::XBottom. If both or no y-axis are enabled, it is set to QwtAxis::YLeft.

The zoomer is initialized with a QwtPickerDragRectMachine, the tracker mode is set to QwtPicker::ActiveOnly and the rubber band is set to QwtPicker::RectRubberBand

Parameters

canvas	Plot canvas to observe, also the parent object
doReplot	Call QwtPlot::replot() for the attached plot before initializing the zoomer with its scales. This might be necessary, when the plot is in a state with pending scale changes.

See also: QwtPlot::autoReplot(), QwtPlot::replot(), setZoomBase()

◆ QwtPlotAxisZoomer() [2/2]

QwtPlotAxisZoomer::QwtPlotAxisZoomer	(	QwtAxisId	xAxisId,
		QwtAxisId	yAxisId,
		QWidget *	canvas,
		bool	doReplot = `true`
	)

explicit

Create a zoomer for a plot canvas.

The zoomer is initialized with a QwtPickerDragRectMachine, the tracker mode is set to QwtPicker::ActiveOnly and the rubber band is set to QwtPicker::RectRubberBand

Parameters

xAxisId	X axis of the zoomer
yAxisId	Y axis of the zoomer
canvas	Plot canvas to observe, also the parent object
doReplot	Call QwtPlot::replot() for the attached plot before initializing the zoomer with its scales. This might be necessary, when the plot is in a state with pending scale changes.

See also: QwtPlot::autoReplot(), QwtPlot::replot(), setZoomBase()

Member Function Documentation

◆ accept()

bool QwtPlotAxisZoomer::accept ( QPolygon & pa ) const

protectedvirtual

Check and correct a selected rectangle.

Reject rectangles with a height or width < 2, otherwise expand the selected rectangle to a minimum size of 11x11 and accept it.

Returns: true If the rectangle is accepted, or has been changed to an accepted one.

Reimplemented from QwtPicker.

◆ begin()

void QwtPlotAxisZoomer::begin ( )

protectedvirtual

Rejects selections, when the stack depth is too deep, or the zoomed rectangle is minZoomSize().

See also: minZoomSize(), maxStackDepth()

Reimplemented from QwtPicker.

◆ end()

bool QwtPlotAxisZoomer::end ( bool ok = true )

protectedvirtual

Expand the selected rectangle to minZoomSize() and zoom in if accepted.

Parameters

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

See also: accept(), minZoomSize()

Returns: True if the selection has been accepted, false otherwise

Reimplemented from QwtPlotPicker.

◆ maxStackDepth()

int QwtPlotAxisZoomer::maxStackDepth ( ) const

Returns: Maximal depth of the zoom stack.

See also: setMaxStackDepth()

◆ minZoomSize()

QSizeF QwtPlotAxisZoomer::minZoomSize ( ) const

protectedvirtual

Limit zooming by a minimum rectangle.

Returns: zoomBase().width() / 10e4, zoomBase().height() / 10e4

◆ moveBy

void QwtPlotAxisZoomer::moveBy	(	double	dx,
		double	dy
	)

slot

Move the current zoom rectangle.

Parameters

dx	X offset
dy	Y offset

Note: The changed rectangle is limited by the zoom base

◆ moveTo

void QwtPlotAxisZoomer::moveTo ( const QPointF & pos )

virtualslot

Move the the current zoom rectangle.

Parameters

pos	New position

See also: QRectF::moveTo()

Note: The changed rectangle is limited by the zoom base

◆ rescale()

void QwtPlotAxisZoomer::rescale ( )

protectedvirtual

Adjust the observed plot to zoomRect()

Note: Initiates QwtPlot::replot()

◆ setAxes()

void QwtPlotAxisZoomer::setAxes	(	QwtAxisId	xAxisId,
		QwtAxisId	yAxisId
	)

virtual

Reinitialize the axes, and set the zoom base to their scales.

Parameters

xAxisId	X axis
yAxisId	Y axis

Reimplemented from QwtPlotPicker.

◆ setMaxStackDepth()

void QwtPlotAxisZoomer::setMaxStackDepth ( int depth )

Limit the number of recursive zoom operations to depth.

A value of -1 set the depth to unlimited, 0 disables zooming. If the current zoom rectangle is below depth, the plot is unzoomed.

Parameters

depth Maximum for the stack depth

See also: maxStackDepth()

Note: depth doesn't include the zoom base, so zoomStack().count() might be maxStackDepth() + 1.

◆ setZoomBase() [1/2]

void QwtPlotAxisZoomer::setZoomBase ( bool doReplot = true )

virtual

Reinitialized the zoom stack with scaleRect() as base.

Parameters

doReplot Call QwtPlot::replot() for the attached plot before initializing the zoomer with its scales. This might be necessary, when the plot is in a state with pending scale changes.

See also: zoomBase(), scaleRect() QwtPlot::autoReplot(), QwtPlot::replot().

◆ setZoomBase() [2/2]

void QwtPlotAxisZoomer::setZoomBase ( const QRectF & base )

virtual

Set the initial size of the zoomer.

base is united with the current scaleRect() and the zoom stack is reinitialized with it as zoom base. plot is zoomed to scaleRect().

Parameters

base Zoom base

See also: zoomBase(), scaleRect()

◆ setZoomStack()

void QwtPlotAxisZoomer::setZoomStack	(	const QStack< QRectF > &	zoomStack,
		int	zoomRectIndex = `-1`
	)

Assign a zoom stack.

In combination with other types of navigation it might be useful to modify to manipulate the complete zoom stack.

Parameters

zoomStack	New zoom stack
zoomRectIndex	Index of the current position of zoom stack. In case of -1 the current position is at the top of the stack.

Note: The zoomed signal might be emitted.

See also: zoomStack(), zoomRectIndex()

◆ widgetKeyPressEvent()

void QwtPlotAxisZoomer::widgetKeyPressEvent ( QKeyEvent * ke )

protectedvirtual

Qt::Key_Plus zooms in, Qt::Key_Minus zooms out one position on the zoom stack, Qt::Key_Escape zooms out to the zoom base.

Changes the current position on the stack, but doesn't pop any rectangle.

Note: The keys codes can be changed, using QwtEventPattern::setKeyPattern: 3, 4, 5

Reimplemented from QwtPicker.

◆ widgetMouseReleaseEvent()

void QwtPlotAxisZoomer::widgetMouseReleaseEvent ( QMouseEvent * me )

protectedvirtual

Qt::MidButton zooms out one position on the zoom stack, Qt::RightButton to the zoom base.

Changes the current position on the stack, but doesn't pop any rectangle.

Note: The mouse events can be changed, using QwtEventPattern::setMousePattern: 2, 1

Reimplemented from QwtPicker.

◆ zoom [1/2]

void QwtPlotAxisZoomer::zoom ( const QRectF & rect )

virtualslot

Zoom in.

Clears all rectangles above the current position of the zoom stack and pushes the normalized rectangle on it.

Note: If the maximal stack depth is reached, zoom is ignored.; The zoomed signal is emitted.

◆ zoom [2/2]

void QwtPlotAxisZoomer::zoom ( int offset )

virtualslot

Zoom in or out.

Activate a rectangle on the zoom stack with an offset relative to the current position. Negative values of offset will zoom out, positive zoom in. A value of 0 zooms out to the zoom base.

Parameters

offset Offset relative to the current position of the zoom stack.

Note: The zoomed signal is emitted.

See also: zoomRectIndex()

◆ zoomBase()

QRectF QwtPlotAxisZoomer::zoomBase ( ) const

Returns: Initial rectangle of the zoomer

See also: setZoomBase(), zoomRect()

◆ zoomed

void QwtPlotAxisZoomer::zoomed ( const QRectF & rect )

signal

A signal emitting the zoomRect(), when the plot has been zoomed in or out.

Parameters

rect	Current zoom rectangle.

◆ zoomRect()

QRectF QwtPlotAxisZoomer::zoomRect ( ) const

Returns: Rectangle at the current position on the zoom stack.

See also: zoomRectIndex(), scaleRect().

◆ zoomRectIndex()

uint QwtPlotAxisZoomer::zoomRectIndex ( ) const

Returns: Index of current position of zoom stack.

◆ zoomStack()

const QStack< QRectF > & QwtPlotAxisZoomer::zoomStack ( ) const

Returns: The zoom stack. zoomStack()[0] is the zoom base, zoomStack()[1] the first zoomed rectangle.

See also: setZoomStack(), zoomRectIndex()

The documentation for this class was generated from the following files:

/home/runner/work/QWT/QWT/src/qwt_plot_axis_zoomer.h
/home/runner/work/QWT/QWT/src/qwt_plot_axis_zoomer.cpp

Classes

Public Slots

Signals

Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ QwtPlotAxisZoomer() [1/2]

◆ QwtPlotAxisZoomer() [2/2]

Member Function Documentation

◆ accept()

◆ begin()

◆ end()

◆ maxStackDepth()

◆ minZoomSize()

◆ moveBy

◆ moveTo

◆ rescale()

◆ setAxes()

◆ setMaxStackDepth()

◆ setZoomBase() [1/2]

◆ setZoomBase() [2/2]

◆ setZoomStack()

◆ widgetKeyPressEvent()

◆ widgetMouseReleaseEvent()

◆ zoom [1/2]

◆ zoom [2/2]

◆ zoomBase()

◆ zoomed

◆ zoomRect()

◆ zoomRectIndex()

◆ zoomStack()