#include <plotzoomer.h>

Inheritance diagram for PlotZoomer:

[legend]

Public Member Functions
void	keepAspectRatio (bool doKeep)

	PlotZoomer ()

	PlotZoomer (QWidget *)

virtual	~PlotZoomer () override=default

Public Member Functions inherited from QwtPlotZoomer
int	maxStackDepth () const

	QwtPlotZoomer (QWidget *, bool doReplot=true)
	Create a zoomer for a plot canvas. More...

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

virtual void	setAxes (QwtAxisId xAxis, QwtAxisId yAxis) QWT_OVERRIDE

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

virtual void	setZoomBase (bool doReplot=true)

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

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

QRectF	zoomBase () const

QRectF	zoomRect () const

uint	zoomRectIndex () const

const QStack< QRectF > &	zoomStack () const

virtual	~QwtPlotZoomer ()

Public Member Functions inherited from QwtPlotPicker
QWidget *	canvas ()

const QWidget *	canvas () const

QwtPlot *	plot ()

const QwtPlot *	plot () const

	QwtPlotPicker (QWidget *canvas)
	Create a plot picker. More...

	QwtPlotPicker (QwtAxisId xAxisId, QwtAxisId yAxisId, QWidget *)

	QwtPlotPicker (QwtAxisId xAxisId, QwtAxisId yAxisId, RubberBand rubberBand, DisplayMode trackerMode, QWidget *)

QwtAxisId	xAxis () const
	Return x axis. More...

QwtAxisId	yAxis () const
	Return y axis. More...

virtual	~QwtPlotPicker ()
	Destructor. More...

Public Member Functions inherited from QwtPicker
virtual void	drawRubberBand (QPainter *) const

virtual void	drawTracker (QPainter *) const

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

bool	isActive () const

bool	isEnabled () const

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

const QWidget *	parentWidget () const

virtual QPainterPath	pickArea () const

	QwtPicker (QWidget *parent)

	QwtPicker (RubberBand rubberBand, DisplayMode trackerMode, QWidget *)

ResizeMode	resizeMode () const

RubberBand	rubberBand () const

virtual QRegion	rubberBandMask () const

QPen	rubberBandPen () const

QPolygon	selection () const

void	setResizeMode (ResizeMode)
	Set the resize mode. More...

void	setRubberBand (RubberBand)

void	setRubberBandPen (const QPen &)

void	setStateMachine (QwtPickerMachine *)

void	setTrackerFont (const QFont &)

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

void	setTrackerPen (const QPen &)

QwtPickerMachine *	stateMachine ()

const QwtPickerMachine *	stateMachine () const

QFont	trackerFont () const

virtual QRegion	trackerMask () const

DisplayMode	trackerMode () const

QPen	trackerPen () const

QPoint	trackerPosition () const

virtual QRect	trackerRect (const QFont &) const

virtual	~QwtPicker ()
	Destructor. More...

Public Member Functions inherited from QwtEventPattern
void	initKeyPattern ()

void	initMousePattern (int numButtons)

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

QVector< KeyPattern > &	keyPattern ()

const QVector< KeyPattern > &	keyPattern () const

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

QVector< MousePattern > &	mousePattern ()

const QVector< MousePattern > &	mousePattern () const

	QwtEventPattern ()

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

void	setKeyPattern (KeyPatternCode, int key, Qt::KeyboardModifiers modifiers=Qt::NoModifier)

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

void	setMousePattern (MousePatternCode, Qt::MouseButton button, Qt::KeyboardModifiers=Qt::NoModifier)

virtual	~QwtEventPattern ()
	Destructor. More...

Protected Member Functions
virtual bool	accept (QPolygon &) const override
	Check and correct a selected rectangle. More...

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

virtual void	widgetMouseMoveEvent (QMouseEvent *event) override

virtual void	widgetMousePressEvent (QMouseEvent *event) override

virtual void	widgetMouseReleaseEvent (QMouseEvent *event) override

virtual void	zoom (const QRectF &rect) override
	Zoom in. More...

Protected Member Functions inherited from QwtPlotZoomer
virtual void	begin () QWT_OVERRIDE

virtual bool	end (bool ok=true) QWT_OVERRIDE

virtual void	rescale ()

virtual void	widgetKeyPressEvent (QKeyEvent *) QWT_OVERRIDE

Protected Member Functions inherited from QwtPlotPicker
virtual void	append (const QPoint &) QWT_OVERRIDE

QPointF	invTransform (const QPoint &) const

QRectF	invTransform (const QRect &) const

virtual void	move (const QPoint &) QWT_OVERRIDE

QRectF	scaleRect () const

virtual QwtText	trackerText (const QPoint &) const QWT_OVERRIDE

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

QPoint	transform (const QPointF &) const

QRect	transform (const QRectF &) const

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

const QPolygon &	pickedPoints () const

virtual void	remove ()

virtual void	reset ()

const QwtWidgetOverlay *	rubberBandOverlay () const

virtual void	stretchSelection (const QSize &oldSize, const QSize &newSize)

const QwtWidgetOverlay *	trackerOverlay () const

QRect	trackerRect (const QSize &) const

virtual void	transition (const QEvent *)

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

virtual void	widgetEnterEvent (QEvent *)

virtual void	widgetKeyReleaseEvent (QKeyEvent *)

virtual void	widgetLeaveEvent (QEvent *)

virtual void	widgetMouseDoubleClickEvent (QMouseEvent *)

virtual void	widgetWheelEvent (QWheelEvent *)

Protected Member Functions inherited from QwtEventPattern
virtual bool	keyMatch (const KeyPattern &, const QKeyEvent *) const
	Compare a key event with an event pattern. More...

virtual bool	mouseMatch (const MousePattern &, const QMouseEvent *) const
	Compare a mouse event with an event pattern. More...

Private Attributes
QPoint	_initial_pos

bool	_keep_aspect_ratio

bool	_mouse_pressed

bool	_zoom_enabled

Additional Inherited Members
Public Types inherited from QwtPicker
enum	DisplayMode { AlwaysOff, AlwaysOn, ActiveOnly }
	Display mode. More...

enum	ResizeMode { Stretch, KeepSize }

enum	RubberBand { NoRubberBand = 0, HLineRubberBand, VLineRubberBand, CrossRubberBand, RectRubberBand, EllipseRubberBand, PolygonRubberBand, UserRubberBand = 100 }

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

enum	MousePatternCode { MouseSelect1, MouseSelect2, MouseSelect3, MouseSelect4, MouseSelect5, MouseSelect6, MousePatternCount }
	Symbolic mouse input codes. More...

Public Slots inherited from QwtPlotZoomer
void	moveBy (double dx, double dy)

virtual void	moveTo (const QPointF &)

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

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

Signals inherited from QwtPlotZoomer
void	zoomed (const QRectF &rect)

Signals inherited from QwtPlotPicker
void	appended (const QPointF &pos)

void	moved (const QPointF &pos)

void	selected (const QPointF &pos)

void	selected (const QRectF &rect)

void	selected (const QVector< QPointF > &pa)

Signals inherited from QwtPicker
void	activated (bool on)

void	appended (const QPoint &pos)

void	changed (const QPolygon &selection)

void	moved (const QPoint &pos)

void	removed (const QPoint &pos)

void	selected (const QPolygon &polygon)

Properties inherited from QwtPicker
bool	isEnabled

ResizeMode	resizeMode

RubberBand	rubberBand

QPen	rubberBandPen

QFont	trackerFont

DisplayMode	trackerMode

QPen	trackerPen

Detailed Description

Definition at line 15 of file plotzoomer.h.

Constructor & Destructor Documentation

◆ PlotZoomer() [1/2]

PlotZoomer::PlotZoomer ( )

◆ PlotZoomer() [2/2]

PlotZoomer::PlotZoomer ( QWidget * canvas )

explicit

Definition at line 18 of file plotzoomer.cpp.

◆ ~PlotZoomer()

virtual PlotZoomer::~PlotZoomer ( )

overridevirtualdefault

Member Function Documentation

◆ accept()

bool PlotZoomer::accept ( QPolygon & pa ) const

overrideprotectedvirtual

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 QwtPlotZoomer.

Definition at line 92 of file plotzoomer.cpp.

◆ keepAspectRatio()

void PlotZoomer::keepAspectRatio ( bool doKeep )

inline

Definition at line 24 of file plotzoomer.h.

◆ minZoomSize()

QSizeF PlotZoomer::minZoomSize ( ) const

overrideprotectedvirtual

Limit zooming by a minimum rectangle.

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

Reimplemented from QwtPlotZoomer.

Definition at line 138 of file plotzoomer.cpp.

◆ widgetMouseMoveEvent()

void PlotZoomer::widgetMouseMoveEvent ( QMouseEvent * mouseEvent )

overrideprotectedvirtual

Handle a mouse move event for the observed widget.

Parameters

mouseEvent Mouse event

See also: eventFilter(), widgetMousePressEvent(), widgetMouseReleaseEvent(), widgetMouseDoubleClickEvent(), widgetWheelEvent(), widgetKeyPressEvent(), widgetKeyReleaseEvent()

Reimplemented from QwtPicker.

Definition at line 44 of file plotzoomer.cpp.

◆ widgetMousePressEvent()

void PlotZoomer::widgetMousePressEvent ( QMouseEvent * mouseEvent )

overrideprotectedvirtual

Handle a mouse press event for the observed widget.

Parameters

mouseEvent Mouse event

See also: eventFilter(), widgetMouseReleaseEvent(), widgetMouseDoubleClickEvent(), widgetMouseMoveEvent(), widgetWheelEvent(), widgetKeyPressEvent(), widgetKeyReleaseEvent()

Reimplemented from QwtPicker.

Definition at line 27 of file plotzoomer.cpp.

◆ widgetMouseReleaseEvent()

void PlotZoomer::widgetMouseReleaseEvent ( QMouseEvent * me )

overrideprotectedvirtual

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 QwtPlotZoomer.

Definition at line 84 of file plotzoomer.cpp.

◆ zoom()

void PlotZoomer::zoom ( const QRectF & rect )

overrideprotectedvirtual

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.

Reimplemented from QwtPlotZoomer.

Definition at line 110 of file plotzoomer.cpp.

Member Data Documentation

◆ _initial_pos

QPoint PlotZoomer::_initial_pos

private

Definition at line 43 of file plotzoomer.h.

◆ _keep_aspect_ratio

bool PlotZoomer::_keep_aspect_ratio

private

Definition at line 42 of file plotzoomer.h.

◆ _mouse_pressed

bool PlotZoomer::_mouse_pressed

private

Definition at line 40 of file plotzoomer.h.

◆ _zoom_enabled

bool PlotZoomer::_zoom_enabled

private

Definition at line 41 of file plotzoomer.h.

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

Public Member Functions

Protected Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

◆ PlotZoomer() [1/2]

◆ PlotZoomer() [2/2]

◆ ~PlotZoomer()

Member Function Documentation

◆ accept()

◆ keepAspectRatio()

◆ minZoomSize()

◆ widgetMouseMoveEvent()

◆ widgetMousePressEvent()

◆ widgetMouseReleaseEvent()

◆ zoom()

Member Data Documentation

◆ _initial_pos

◆ _keep_aspect_ratio

◆ _mouse_pressed

◆ _zoom_enabled