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QwtPickerMachine Class Reference

Inheritance diagram for QwtPickerMachine:

Inheritance graph
[legend]
List of all members.

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

Definition at line 28 of file qwt_picker_machine.h.

Public Types

enum  Command {
  Begin,
  Append,
  Move,
  End
}

Public Member Functions

virtual ~QwtPickerMachine ()
virtual QValueList< Command > transition (const QwtEventPattern &, const QEvent *)=0
void reset ()

Protected Member Functions

 QwtPickerMachine ()
int state () const
void setState (int)


Constructor & Destructor Documentation

QwtPickerMachine::~QwtPickerMachine  )  [virtual]
 

Destructor.

Definition at line 21 of file qwt_picker_machine.cpp.

QwtPickerMachine::QwtPickerMachine  )  [protected]
 

Constructor.

Definition at line 15 of file qwt_picker_machine.cpp.


Member Function Documentation

void QwtPickerMachine::reset  ) 
 

Set the current state to 0.

Definition at line 38 of file qwt_picker_machine.cpp.

References setState().

Referenced by QwtPicker::widgetKeyPressEvent().

void QwtPickerMachine::setState int   )  [protected]
 

Change the current state.

Definition at line 32 of file qwt_picker_machine.cpp.

Referenced by reset(), QwtPickerPolygonMachine::transition(), QwtPickerDragRectMachine::transition(), QwtPickerClickRectMachine::transition(), and QwtPickerDragPointMachine::transition().

int QwtPickerMachine::state  )  const [protected]
 

Return the current state.

Definition at line 26 of file qwt_picker_machine.cpp.

Referenced by QwtPickerPolygonMachine::transition(), QwtPickerDragRectMachine::transition(), QwtPickerClickRectMachine::transition(), and QwtPickerDragPointMachine::transition().

virtual QValueList<Command> QwtPickerMachine::transition const QwtEventPattern ,
const QEvent * 
[pure virtual]
 

Transition.

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

Referenced by QwtPicker::transition().


Generated on Sun Nov 21 11:12:53 2004 for Qwt User's Guide by doxygen 1.3.5