#include <qwt_plot_picker.h>

Inheritance diagram for QwtPlotPicker:

Signals
void	appended (const QwtDoublePoint &pos)
void	moved (const QwtDoublePoint &pos)
void	selected (const QwtDoublePoint &pos)
void	selected (const QwtDoubleRect &rect)
void	selected (const QwtArray< QwtDoublePoint > &pa)
Signals inherited from QwtPicker
void	appended (const QPoint &pos)
void	changed (const QwtPolygon &pa)
void	moved (const QPoint &pos)
void	selected (const QwtPolygon &pa)

Public Member Functions
	QwtPlotPicker (QwtPlotCanvas *)
	QwtPlotPicker (int xAxis, int yAxis, QwtPlotCanvas *)
	QwtPlotPicker (int xAxis, int yAxis, int selectionFlags, RubberBand rubberBand, DisplayMode trackerMode, QwtPlotCanvas *)
virtual	~QwtPlotPicker ()
QwtPlotCanvas *	canvas ()
const QwtPlotCanvas *	canvas () const
QwtPlot *	plot ()
const QwtPlot *	plot () const
virtual void	setAxis (int xAxis, int yAxis)
int	xAxis () const
int	yAxis () const
Public Member Functions inherited from QwtPicker
	QwtPicker (QWidget *parent)
	QwtPicker (int selectionFlags, RubberBand rubberBand, DisplayMode trackerMode, QWidget *)
virtual	~QwtPicker ()
virtual void	drawRubberBand (QPainter *) const
virtual void	drawTracker (QPainter *) const
virtual bool	eventFilter (QObject , QEvent )
bool	isActive () const
bool	isEnabled () const
QWidget *	parentWidget ()
const QWidget *	parentWidget () const
virtual QRect	pickRect () const
ResizeMode	resizeMode () const
RubberBand	rubberBand () const
QPen	rubberBandPen () const
const QwtPolygon &	selection () const
int	selectionFlags () const
virtual void	setEnabled (bool)
virtual void	setResizeMode (ResizeMode)
virtual void	setRubberBand (RubberBand)
virtual void	setRubberBandPen (const QPen &)
virtual void	setSelectionFlags (int)
virtual void	setTrackerFont (const QFont &)
virtual void	setTrackerMode (DisplayMode)
virtual void	setTrackerPen (const QPen &)
QFont	trackerFont () const
DisplayMode	trackerMode () const
QPen	trackerPen () const
QPoint	trackerPosition () const
QRect	trackerRect (const QFont &) const
Public Member Functions inherited from QwtEventPattern
	QwtEventPattern ()
virtual	~QwtEventPattern ()
void	initKeyPattern ()
void	initMousePattern (int numButtons)
bool	keyMatch (uint pattern, const QKeyEvent *) const
const QwtArray< KeyPattern > &	keyPattern () const
QwtArray< KeyPattern > &	keyPattern ()
bool	mouseMatch (uint pattern, const QMouseEvent *) const
const QwtArray< MousePattern > &	mousePattern () const
QwtArray< MousePattern > &	mousePattern ()
void	setKeyPattern (uint pattern, int key, int state=Qt::NoButton)
void	setKeyPattern (const QwtArray< KeyPattern > &)
void	setMousePattern (uint pattern, int button, int state=Qt::NoButton)
void	setMousePattern (const QwtArray< MousePattern > &)

Protected Member Functions
virtual void	append (const QPoint &)
virtual bool	end (bool ok=true)
QwtDoubleRect	invTransform (const QRect &) const
QwtDoublePoint	invTransform (const QPoint &) const
virtual void	move (const QPoint &)
QwtDoubleRect	scaleRect () const
virtual QwtText	trackerText (const QPoint &) const
virtual QwtText	trackerText (const QwtDoublePoint &) const
QRect	transform (const QwtDoubleRect &) const
QPoint	transform (const QwtDoublePoint &) const
Protected Member Functions inherited from QwtPicker
virtual bool	accept (QwtPolygon &selection) const
virtual void	begin ()
virtual void	reset ()
const QWidget *	rubberBandWidget () const
virtual QwtPickerMachine *	stateMachine (int) const
virtual void	stretchSelection (const QSize &oldSize, const QSize &newSize)
const QWidget *	trackerWidget () const
virtual void	transition (const QEvent *)
virtual void	updateDisplay ()
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
virtual bool	mouseMatch (const MousePattern &, const QMouseEvent *) const

Additional Inherited Members
Public Types inherited from QwtPicker
enum	DisplayMode { AlwaysOff, AlwaysOn, ActiveOnly }
enum	RectSelectionType { CornerToCorner = 64, CenterToCorner = 128, CenterToRadius = 256 }
enum	ResizeMode { Stretch, KeepSize }
enum	RubberBand { NoRubberBand = 0, HLineRubberBand, VLineRubberBand, CrossRubberBand, RectRubberBand, EllipseRubberBand, PolygonRubberBand, UserRubberBand = 100 }
enum	SelectionMode { ClickSelection = 1024, DragSelection = 2048 }
enum	SelectionType { NoSelection = 0, PointSelection = 1, RectSelection = 2, PolygonSelection = 4 }
Public Types inherited from QwtEventPattern
enum	KeyPatternCode { KeySelect1, KeySelect2, KeyAbort, KeyLeft, KeyRight, KeyUp, KeyDown, KeyRedo, KeyUndo, KeyHome, KeyPatternCount }
enum	MousePatternCode { MouseSelect1, MouseSelect2, MouseSelect3, MouseSelect4, MouseSelect5, MouseSelect6, MousePatternCount }

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 coodinate system.

Constructor & Destructor Documentation

QwtPlotPicker::QwtPlotPicker ( QwtPlotCanvas * 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(), QwtPlotPicker::scaleRect()

QwtPlotPicker::QwtPlotPicker	(	int	xAxis,
		int	yAxis,
		QwtPlotCanvas *	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(), QwtPlotPicker::scaleRect()

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

explicit

Create a plot picker

Parameters:

xAxis	X axis of the picker
yAxis	Y axis of the picker
selectionFlags	Or'd value of SelectionType, RectSelectionType and SelectionMode
rubberBand	Rubberband 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(), QwtPlotPicker::scaleRect()

Member Function Documentation

void QwtPlotPicker::append ( const QPoint & pos )

protectedvirtual

Append a point to the selection and update rubberband 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.

void QwtPlotPicker::appended ( const QwtDoublePoint & 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()

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 is accepted, false otherwise

Reimplemented from QwtPicker.

Reimplemented in QwtPlotZoomer.

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

protected

Translate a rectangle from pixel into plot coordinates

Returns:: Rectangle in plot coordinates

See also:: QwtPlotPicker::transform()

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

protected

Translate a point from pixel into plot coordinates

Returns:: Point in plot coordinates

See also:: QwtPlotPicker::transform()

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.

void QwtPlotPicker::moved ( const QwtDoublePoint & 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()

QwtDoubleRect QwtPlotPicker::scaleRect ( ) const

protected

Return normalized bounding rect of the axes

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

void QwtPlotPicker::selected ( const QwtDoublePoint & pos )

signal

A signal emitted in case of selectionFlags() & PointSelection.

Parameters:

pos	Selected point

void QwtPlotPicker::selected ( const QwtDoubleRect & rect )

signal

A signal emitted in case of selectionFlags() & RectSelection.

Parameters:

rect	Selected rectangle

void QwtPlotPicker::selected ( const QwtArray< QwtDoublePoint > & 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.

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.

QwtText QwtPlotPicker::trackerText ( const QwtDoublePoint & 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

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

protected

Translate a rectangle from plot into pixel coordinates

Returns:: Rectangle in pixel coordinates

See also:: QwtPlotPicker::invTransform()

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

protected

Translate a point from plot into pixel coordinates

Returns:: Point in pixel coordinates

See also:: QwtPlotPicker::invTransform()

Signals

Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation