A state machine for polygon selections. More...
#include <qwt_picker_machine.h>
Public Member Functions | |
QwtPickerPolygonMachine () | |
virtual QList< Command > | transition (const QwtEventPattern &, const QEvent *) |
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.
QwtPickerPolygonMachine::QwtPickerPolygonMachine | ( | ) |
Constructor.
QList< QwtPickerMachine::Command > QwtPickerPolygonMachine::transition | ( | const QwtEventPattern & | eventPattern, | |
const QEvent * | e | |||
) | [virtual] |
Transition.
Implements QwtPickerMachine.