A state machine for polygon selections. More...

Inheritance diagram for QwtPickerPolygonMachine:

Public Member Functions
	QwtPickerPolygonMachine ()
	Constructor. More...

virtual QList< Command >	transition (const QwtEventPattern &, const QEvent *) QWT_OVERRIDE
	Transition. More...

Public Member Functions inherited from QwtPickerMachine
	QwtPickerMachine (SelectionType)
	Constructor. More...

void	reset ()
	Set the current state to 0. More...

SelectionType	selectionType () const
	Return the selection type. More...

void	setState (int)
	Change the current state. More...

int	state () const
	Return the current state. More...

virtual	~QwtPickerMachine ()
	Destructor. More...

Additional Inherited Members
Public Types inherited from QwtPickerMachine
enum	Command { Begin, Append, Move, Remove, End }
	Commands - the output of a state machine. More...

enum	SelectionType { NoSelection = -1, PointSelection, RectSelection, PolygonSelection }

Detailed Description

A state machine for polygon selections.

Pressing QwtEventPattern::MouseSelect1 or QwtEventPattern::KeySelect1 starts the selection and selects the first point, or appends a point. Pressing QwtEventPattern::MouseSelect2 or QwtEventPattern::KeySelect2 appends the last point and terminates the selection.

See also: QwtEventPattern::MousePatternCode, QwtEventPattern::KeyPatternCode

Definition at line 205 of file qwt_picker_machine.h.

Constructor & Destructor Documentation

QwtPickerPolygonMachine::QwtPickerPolygonMachine ( )

Constructor.

Definition at line 384 of file qwt_picker_machine.cpp.

QList< QwtPickerMachine::Command > QwtPickerPolygonMachine::transition	(	const QwtEventPattern &	eventPattern,
		const QEvent *	event
	)

virtual

Transition.

Definition at line 390 of file qwt_picker_machine.cpp.

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