QwtPickerMachine(3)

NAME
QwtPickerMachine -

A state machine for QwtPicker selections.

SYNOPSIS

#include <qwt_picker_machine.h>

Inherited by QwtPickerClickPointMachine, QwtPickerClickRectMachine, QwtPickerDragPointMachine, QwtPickerDragRectMachine, and QwtPickerPolygonMachine.

  Public Types
enum Command { Begin, Append, Move, End }
typedef QList< Command > CommandList

  Public Member Functions
void reset ()
void setState (int)
int state () const
virtual CommandList transition (const QwtEventPattern &, const QEvent *)=0
virtual ~QwtPickerMachine ()

  Protected Member Functions
QwtPickerMachine ()

Detailed Description

A state machine for QwtPicker selections. QwtPickerMachine accepts key and mouse events and translates them into selection commands.

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

Member Enumeration Documentation

  enum QwtPickerMachine::Command

Commands - the output of the state machine.

Constructor & Destructor Documentation

  QwtPickerMachine::~QwtPickerMachine () [virtual]

Destructor.

  QwtPickerMachine::QwtPickerMachine () [protected]

Constructor.

Member Function Documentation

  void QwtPickerMachine::reset ()

Set the current state to 0.

  void QwtPickerMachine::setState (intstate)

Change the current state.

  int QwtPickerMachine::state () const

Return the current state.

  virtual CommandList QwtPickerMachine::transition (const QwtEventPattern &, const QEvent *) [pure virtual]

Transition.

Implemented in QwtPickerClickPointMachine, QwtPickerDragPointMachine, QwtPickerClickRectMachine, QwtPickerDragRectMachine, and QwtPickerPolygonMachine.

Author

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