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:

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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