QwtPlotPicker provides selections on a plot canvas. More...

#include <qwt_plot_picker.h>

Inheritance diagram for QwtPlotPicker:

[legend]

Signals
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)

Public Member Functions
QWidget *	canvas ()

const QWidget *	canvas () const

QwtPlot *	plot ()

const QwtPlot *	plot () const

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

	QwtPlotPicker (int xAxis, int yAxis, QWidget *)

	QwtPlotPicker (int xAxis, int yAxis, RubberBand rubberBand, DisplayMode trackerMode, QWidget *)

virtual void	setAxis (int xAxis, int yAxis)

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

int	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
	Return the parent widget, where the selection happens. More...

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 &)

const QwtPickerMachine *	stateMachine () const

QwtPickerMachine *	stateMachine ()

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...

const QVector< KeyPattern > &	keyPattern () const

QVector< KeyPattern > &	keyPattern ()

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

const QVector< MousePattern > &	mousePattern () const

QVector< MousePattern > &	mousePattern ()

	QwtEventPattern ()

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

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

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

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

virtual	~QwtEventPattern ()
	Destructor. More...

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

virtual bool	end (bool ok=true) QWT_OVERRIDE

QRectF	invTransform (const QRect &) const

QPointF	invTransform (const QPoint &) 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...

QRect	transform (const QRectF &) const

QPoint	transform (const QPointF &) const

Protected Member Functions inherited from QwtPicker
virtual bool	accept (QPolygon &) const
	Validate and fix up the selection. More...

virtual QPolygon	adjustedPoints (const QPolygon &) const
	Map the pickedPoints() into a selection() More...

virtual void	begin ()

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

virtual void	transition (const QEvent *)

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

virtual void	widgetEnterEvent (QEvent *)

virtual void	widgetKeyPressEvent (QKeyEvent *)

virtual void	widgetKeyReleaseEvent (QKeyEvent *)

virtual void	widgetLeaveEvent (QEvent *)

virtual void	widgetMouseDoubleClickEvent (QMouseEvent *)

virtual void	widgetMouseMoveEvent (QMouseEvent *)

virtual void	widgetMousePressEvent (QMouseEvent *)

virtual void	widgetMouseReleaseEvent (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
int	d_xAxis

int	d_yAxis

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 QwtPicker
void	setEnabled (bool)
	En/disable the picker. More...

Properties inherited from QwtPicker
bool	isEnabled

ResizeMode	resizeMode

RubberBand	rubberBand

QPen	rubberBandPen

QFont	trackerFont

DisplayMode	trackerMode

QPen	trackerPen

Detailed Description

QwtPlotPicker provides selections on a plot canvas.

QwtPlotPicker is a QwtPicker tailored for selections on a plot canvas. It is set to a x-Axis and y-Axis and translates all pixel coordinates into this coordinate system.

Definition at line 29 of file qwt_plot_picker.h.

Constructor & Destructor Documentation

QwtPlotPicker::QwtPlotPicker ( QWidget * canvas )

explicit

Create a plot picker.

The picker is set to those x- and y-axis of the plot that are enabled. If both or no x-axis are enabled, the picker is set to QwtPlot::xBottom. If both or no y-axis are enabled, it is set to QwtPlot::yLeft.

Parameters

canvas Plot canvas to observe, also the parent object

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

Definition at line 30 of file qwt_plot_picker.cpp.

QwtPlotPicker::~QwtPlotPicker ( )

virtual

Destructor.

Definition at line 99 of file qwt_plot_picker.cpp.

QwtPlotPicker::QwtPlotPicker	(	int	xAxis,
		int	yAxis,
		QWidget *	canvas
	)

explicit

Create a plot picker

Parameters

xAxis	Set the x axis of the picker
yAxis	Set the y axis of the picker
canvas	Plot canvas to observe, also the parent object

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

Definition at line 68 of file qwt_plot_picker.cpp.

QwtPlotPicker::QwtPlotPicker	(	int	xAxis,
		int	yAxis,
		RubberBand	rubberBand,
		DisplayMode	trackerMode,
		QWidget *	canvas
	)

explicit

Create a plot picker

Parameters

xAxis	X axis of the picker
yAxis	Y axis of the picker
rubberBand	Rubber band style
trackerMode	Tracker mode
canvas	Plot canvas to observe, also the parent object

See also: QwtPicker, QwtPicker::setSelectionFlags(), QwtPicker::setRubberBand(), QwtPicker::setTrackerMode; QwtPlot::autoReplot(), QwtPlot::replot(), scaleRect()

Definition at line 89 of file qwt_plot_picker.cpp.

Member Function Documentation

void QwtPlotPicker::append ( const QPoint & pos )

protectedvirtual

Append a point to the selection and update rubber band and tracker.

Parameters

pos	Additional point

See also: isActive, begin(), end(), move(), appended()

Note: The appended(const QPoint &), appended(const QDoublePoint &) signals are emitted.

Reimplemented from QwtPicker.

Definition at line 241 of file qwt_plot_picker.cpp.

void QwtPlotPicker::appended ( const QPointF & pos )

signal

A signal emitted when a point has been appended to the selection

Parameters

pos	Position of the appended point.

See also: append(). moved()

QWidget * QwtPlotPicker::canvas ( )

Returns: Observed plot canvas

Definition at line 104 of file qwt_plot_picker.cpp.

const QWidget * QwtPlotPicker::canvas ( ) const

Returns: Observed plot canvas

Definition at line 110 of file qwt_plot_picker.cpp.

bool QwtPlotPicker::end ( bool ok = true )

protectedvirtual

Close a selection setting the state to inactive.

Parameters

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

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

Reimplemented from QwtPicker.

Reimplemented in QwtPlotZoomer.

Definition at line 270 of file qwt_plot_picker.cpp.

QRectF QwtPlotPicker::invTransform ( const QRect & rect ) const

protected

Translate a rectangle from pixel into plot coordinates

Returns: Rectangle in plot coordinates

See also: transform()

Definition at line 331 of file qwt_plot_picker.cpp.

QPointF QwtPlotPicker::invTransform ( const QPoint & pos ) const

protected

Translate a point from pixel into plot coordinates

Returns: Point in plot coordinates

See also: transform()

Definition at line 357 of file qwt_plot_picker.cpp.

void QwtPlotPicker::move ( const QPoint & pos )

protectedvirtual

Move the last point of the selection

Parameters

pos	New position

See also: isActive, begin(), end(), append()

Note: The moved(const QPoint &), moved(const QDoublePoint &) signals are emitted.

Reimplemented from QwtPicker.

Definition at line 256 of file qwt_plot_picker.cpp.

void QwtPlotPicker::moved ( const QPointF & pos )

signal

A signal emitted whenever the last appended point of the selection has been moved.

Parameters

pos	Position of the moved last point of the selection.

See also: move(), appended()

QwtPlot * QwtPlotPicker::plot ( )

Returns: Plot widget, containing the observed plot canvas

Definition at line 116 of file qwt_plot_picker.cpp.

const QwtPlot * QwtPlotPicker::plot ( ) const

Returns: Plot widget, containing the observed plot canvas

Definition at line 126 of file qwt_plot_picker.cpp.

QRectF QwtPlotPicker::scaleRect ( ) const

protected

Returns: Normalized bounding rectangle of the axes

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

Definition at line 139 of file qwt_plot_picker.cpp.

void QwtPlotPicker::selected ( const QPointF & pos )

signal

A signal emitted in case of QwtPickerMachine::PointSelection.

Parameters

pos	Selected point

void QwtPlotPicker::selected ( const QRectF & rect )

signal

A signal emitted in case of QwtPickerMachine::RectSelection.

Parameters

rect	Selected rectangle

void QwtPlotPicker::selected ( const QVector< QPointF > & pa )

signal

A signal emitting the selected points, at the end of a selection.

Parameters

pa	Selected points

void QwtPlotPicker::setAxis	(	int	xAxis,
		int	yAxis
	)

virtual

Set the x and y axes of the picker

Parameters

xAxis	X axis
yAxis	Y axis

Reimplemented in QwtPlotZoomer.

Definition at line 162 of file qwt_plot_picker.cpp.

QwtText QwtPlotPicker::trackerText ( const QPoint & pos ) const

protectedvirtual

Translate a pixel position into a position string

Parameters

pos	Position in pixel coordinates

Returns: Position string

Reimplemented from QwtPicker.

Definition at line 193 of file qwt_plot_picker.cpp.

QwtText QwtPlotPicker::trackerTextF ( const QPointF & pos ) const

protectedvirtual

Translate a position into a position string.

In case of HLineRubberBand the label is the value of the y position, in case of VLineRubberBand the value of the x position. Otherwise the label contains x and y position separated by a ',' .

The format for the double to string conversion is "%.4f".

Parameters

pos Position

Returns: Position string

Definition at line 213 of file qwt_plot_picker.cpp.

QRect QwtPlotPicker::transform ( const QRectF & rect ) const

protected

Translate a rectangle from plot into pixel coordinates

Returns: Rectangle in pixel coordinates

See also: invTransform()

Definition at line 344 of file qwt_plot_picker.cpp.

QPoint QwtPlotPicker::transform ( const QPointF & pos ) const

protected

Translate a point from plot into pixel coordinates

Returns: Point in pixel coordinates

See also: invTransform()

Definition at line 373 of file qwt_plot_picker.cpp.

int QwtPlotPicker::xAxis ( ) const

Return x axis.

Definition at line 176 of file qwt_plot_picker.cpp.

int QwtPlotPicker::yAxis ( ) const

Return y axis.

Definition at line 182 of file qwt_plot_picker.cpp.

Member Data Documentation

int QwtPlotPicker::d_xAxis

private

Definition at line 109 of file qwt_plot_picker.h.

int QwtPlotPicker::d_yAxis

private

Definition at line 110 of file qwt_plot_picker.h.

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

Signals

Public Member Functions

Protected Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation