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/*
* python-qwt. Python wrapper for the Qwt Widget Library
* Copyright (C) 1997 Josef Wilgen
* Copyright (C) 2002 Uwe Rathmann
* Copyright (C) 2015 Gudjon I. Gudjonsson
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the Qwt License, Version 1.0
*****************************************************************************/
class QwtPickerMachine
{
%TypeHeaderCode
#include <qwt_picker_machine.h>
%End
public:
enum SelectionType
{
NoSelection = -1,
PointSelection,
RectSelection,
PolygonSelection
};
//! Commands - the output of a state machine
enum Command
{
Begin,
Append,
Move,
Remove,
End
};
QwtPickerMachine( SelectionType type );
virtual ~QwtPickerMachine();
//! Transition
virtual QList<QwtPickerMachine::Command> transition( const QwtEventPattern &, const QEvent * /Transfer/) = 0;
void reset();
int state() const;
void setState( int );
SelectionType selectionType() const;
private:
QwtPickerMachine& operator=(const QwtPickerMachine&);
//SelectionType d_selectionType;
//int d_state;
};
/*!
\brief A state machine for indicating mouse movements
QwtPickerTrackerMachine supports displaying information
corresponding to mouse movements, but is not intended for
selecting anything. Begin/End are related to Enter/Leave events.
*/
class QwtPickerTrackerMachine: QwtPickerMachine
{
%TypeHeaderCode
#include <qwt_picker_machine.h>
%End
public:
QwtPickerTrackerMachine();
virtual QList<QwtPickerMachine::Command> transition(
const QwtEventPattern &, const QEvent * /Transfer/);
};
/*!
\brief A state machine for point selections
Pressing QwtEventPattern::MouseSelect1 or
QwtEventPattern::KeySelect1 selects a point.
\sa QwtEventPattern::MousePatternCode, QwtEventPattern::KeyPatternCode
*/
class QwtPickerClickPointMachine: QwtPickerMachine
{
%TypeHeaderCode
#include <qwt_picker_machine.h>
%End
public:
QwtPickerClickPointMachine();
virtual QList<QwtPickerMachine::Command> transition( const QwtEventPattern &, const QEvent * /Transfer/);
};
/*!
\brief A state machine for point selections
Pressing QwtEventPattern::MouseSelect1 or QwtEventPattern::KeySelect1
starts the selection, releasing QwtEventPattern::MouseSelect1 or
a second press of QwtEventPattern::KeySelect1 terminates it.
*/
class QwtPickerDragPointMachine: QwtPickerMachine
{
%TypeHeaderCode
#include <qwt_picker_machine.h>
%End
public:
QwtPickerDragPointMachine();
virtual QList<QwtPickerMachine::Command> transition(const QwtEventPattern &, const QEvent * /Transfer/);
};
/*!
\brief 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.
\sa QwtEventPattern::MousePatternCode, QwtEventPattern::KeyPatternCode
*/
class QwtPickerClickRectMachine: QwtPickerMachine
{
%TypeHeaderCode
#include <qwt_picker_machine.h>
%End
public:
QwtPickerClickRectMachine();
virtual QList<QwtPickerMachine::Command> transition(
const QwtEventPattern &, const QEvent * /Transfer/);
};
/*!
\brief A state machine for rectangle selections
Pressing QwtEventPattern::MouseSelect1 selects
the first point, releasing it the second point.
Pressing QwtEventPattern::KeySelect1 also selects the
first point, a second press selects the second point and terminates
the selection.
\sa QwtEventPattern::MousePatternCode, QwtEventPattern::KeyPatternCode
*/
class QwtPickerDragRectMachine: QwtPickerMachine
{
%TypeHeaderCode
#include <qwt_picker_machine.h>
%End
public:
QwtPickerDragRectMachine();
virtual QList<QwtPickerMachine::Command> transition( const QwtEventPattern &, const QEvent * /Transfer/);
};
/*!
\brief A state machine for line selections
Pressing QwtEventPattern::MouseSelect1 selects
the first point, releasing it the second point.
Pressing QwtEventPattern::KeySelect1 also selects the
first point, a second press selects the second point and terminates
the selection.
A common use case of QwtPickerDragLineMachine are pickers for
distance measurements.
\sa QwtEventPattern::MousePatternCode, QwtEventPattern::KeyPatternCode
*/
class QwtPickerDragLineMachine: QwtPickerMachine
{
%TypeHeaderCode
#include <qwt_picker_machine.h>
%End
public:
QwtPickerDragLineMachine();
virtual QList<QwtPickerMachine::Command> transition(const QwtEventPattern &, const QEvent * /Transfer/);
};
/*!
\brief A state machine for polygon selections
Pressing QwtEventPattern::MouseSelect1 or QwtEventPattern::KeySelect1
starts the selection and selects the first point, or appends a point.
Pressing QwtEventPattern::MouseSelect2 or QwtEventPattern::KeySelect2
appends the last point and terminates the selection.
\sa QwtEventPattern::MousePatternCode, QwtEventPattern::KeyPatternCode
*/
class QwtPickerPolygonMachine: QwtPickerMachine
{
%TypeHeaderCode
#include <qwt_picker_machine.h>
%End
public:
QwtPickerPolygonMachine();
virtual QList<QwtPickerMachine::Command> transition( const QwtEventPattern &, const QEvent * /Transfer/);
};
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