QwtPickerMachine Class Reference

A state machine for QwtPicker selections. More...

#include <qwt_picker_machine.h>

Inheritance diagram for QwtPickerMachine:

List of all members.

Public Types
enum	Command { Begin, Append, Move, End }
	Commands - the output of the state machine. More...
typedef QValueList< Command >	CommandList
Public Member Functions
virtual	~QwtPickerMachine ()
	Destructor.
virtual CommandList	transition (const QwtEventPattern &, const QEvent *)=0
	Transition.
void	reset ()
	Set the current state to 0.
int	state () const
	Return the current state.
void	setState (int)
	Change the current state.
Protected Member Functions
	QwtPickerMachine ()
	Constructor.

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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 32 of file qwt_picker_machine.h.

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Member Typedef Documentation

typedef QValueList<Command> QwtPickerMachine::CommandList

Definition at line 45 of file qwt_picker_machine.h.

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Member Enumeration Documentation

enum QwtPickerMachine::Command

Commands - the output of the state machine.

Enumerator:

Begin
Append
Move
End

Definition at line 36 of file qwt_picker_machine.h.

    {
        Begin,
        Append,
        Move,
        End
    };

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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.

                                  :
    d_state(0)
{
}

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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::reset().

{
    setState(0);
}

void QwtPickerMachine::setState

(

int

state )

Change the current state.

Definition at line 32 of file qwt_picker_machine.cpp.

References state().

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

{
    d_state = state;
}

int QwtPickerMachine::state

(

)

const

Return the current state.

Definition at line 26 of file qwt_picker_machine.cpp.

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

{
    return d_state;
}

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

Transition.

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

Referenced by QwtPicker::transition().

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

• qwt_picker_machine.h
• qwt_picker_machine.cpp