Qwt User's Guide 5.2.2
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A state machine for QwtPicker selections. More...
#include <qwt_picker_machine.h>
Public Types | |
enum | Command { Begin, Append, Move, End } |
typedef QList< Command > | CommandList |
Public Member Functions | |
void | reset () |
void | setState (int) |
int | state () const |
virtual CommandList | transition (const QwtEventPattern &, const QEvent *)=0 |
virtual | ~QwtPickerMachine () |
Protected Member Functions | |
QwtPickerMachine () |
A state machine for QwtPicker selections.
QwtPickerMachine accepts key and mouse events and translates them into selection commands.
Commands - the output of the state machine.
QwtPickerMachine::~QwtPickerMachine | ( | ) | [virtual] |
Destructor.
QwtPickerMachine::QwtPickerMachine | ( | ) | [protected] |
Constructor.
void QwtPickerMachine::reset | ( | ) |
Set the current state to 0.
void QwtPickerMachine::setState | ( | int | state | ) |
Change the current state.
int QwtPickerMachine::state | ( | ) | const |
Return the current state.
virtual CommandList QwtPickerMachine::transition | ( | const QwtEventPattern & | , |
const QEvent * | |||
) | [pure virtual] |
Transition.
Implemented in QwtPickerClickPointMachine, QwtPickerDragPointMachine, QwtPickerClickRectMachine, QwtPickerDragRectMachine, and QwtPickerPolygonMachine.