QwtPickerPolygonMachine - A state machine for polygon selections.

NAME  SYNOPSIS  Public Member Functions  Additional Inherited Members  Detailed Description  Constructor & Destructor Documentation  QwtPickerPolygonMachine::QwtPickerPolygonMachine ()  Member Function Documentation  QList< QwtPickerMachine::Command > QwtPickerPolygonMachine::transition(const QwtEventPattern & eventPattern, const QEvent * event)[override], [virtual]  Author 

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NAME

QwtPickerPolygonMachine − A state machine for polygon selections.

SYNOPSIS

#include <qwt_picker_machine.h>

Inherits QwtPickerMachine.

Public Member Functions

QwtPickerPolygonMachine ()
Constructor.
virtual QList< Command > transition (const QwtEventPattern &, const QEvent *) override
Transition.

Public Member Functions inherited from QwtPickerMachine

QwtPickerMachine (SelectionType)
Constructor.
virtual ˜QwtPickerMachine ()
Destructor.
void reset ()
Set the current state to 0.
int state () const
Return the current state.
void setState (int)
Change the current state.
SelectionType selectionType () const
Return the selection type.

Additional Inherited Members

Public Types inherited from QwtPickerMachine

enum SelectionType { NoSelection = -1, PointSelection, RectSelection, PolygonSelection }
enum Command { Begin, Append, Move, Remove, End }
Commands - the output of a state machine.

Detailed Description

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.

See also

QwtEventPattern::MousePatternCode, QwtEventPattern::KeyPatternCode

Definition at line 205 of file qwt_picker_machine.h.

Constructor & Destructor Documentation

QwtPickerPolygonMachine::QwtPickerPolygonMachine ()

Constructor.

Definition at line 384 of file qwt_picker_machine.cpp.

Member Function Documentation

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

Transition.

Implements QwtPickerMachine.

Definition at line 390 of file qwt_picker_machine.cpp.

Author

Generated automatically by Doxygen for Qwt User’s Guide from the source code.

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