QwtPickerClickRectMachine Class Reference

#include <qwt_picker_machine.h>

Inherits QwtPickerMachine.

List of all members.

Public Types
enum	Command {   Begin,   Append,   Move,   Remove,   End }
enum	SelectionType {   NoSelection = -1,   PointSelection,   RectSelection,   PolygonSelection }
Public Member Functions
	QwtPickerClickRectMachine ()
void	reset ()
SelectionType	selectionType () const
void	setState (int)
int	state () const
virtual QList< Command >	transition (const QwtEventPattern &, const QEvent *)

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Detailed Description

A state machine for rectangle selections.

Pressing QwtEventPattern::MouseSelect1 starts the selection, releasing it selects the first point. Pressing it again selects the second point and terminates the selection. Pressing QwtEventPattern::KeySelect1 also starts the selection, a second press selects the first point. A third one selects the second point and terminates the selection.

See also:

QwtEventPattern::MousePatternCode, QwtEventPattern::KeyPatternCode

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Member Enumeration Documentation

enum QwtPickerMachine::Command [inherited]

Commands - the output of a state machine.

enum QwtPickerMachine::SelectionType [inherited]

Type of a selection.

See also:

selectionType()

Enumerator:

NoSelection	The state machine not usable for any type of selection.
PointSelection	The state machine is for selecting a single point.
RectSelection	The state machine is for selecting a rectangle (2 points).
PolygonSelection	The state machine is for selecting a polygon (many points).

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Constructor & Destructor Documentation

QwtPickerClickRectMachine::QwtPickerClickRectMachine

(

)

Constructor.

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Member Function Documentation

void QwtPickerMachine::reset

(

)

[inherited]

Set the current state to 0.

QwtPickerMachine::SelectionType QwtPickerMachine::selectionType

(

)

const [inherited]

Return the selection type.

void QwtPickerMachine::setState

(

int

state

)

[inherited]

Change the current state.

int QwtPickerMachine::state

(

)

const [inherited]

Return the current state.

QList< QwtPickerMachine::Command > QwtPickerClickRectMachine::transition	(	const QwtEventPattern &	eventPattern,
		const QEvent *	event
	)		[virtual]

Transition.

Implements QwtPickerMachine.