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Qwt User's Guide 6.0.1
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A state machine for QwtPicker selections. More...
#include <qwt_picker_machine.h>

Public Types | |
| enum | Command { Begin, Append, Move, Remove, End } |
| enum | SelectionType { NoSelection = -1, PointSelection, RectSelection, PolygonSelection } |
Public Member Functions | |
| QwtPickerMachine (SelectionType) | |
| void | reset () |
| SelectionType | selectionType () const |
| void | setState (int) |
| int | state () const |
| virtual QList< Command > | transition (const QwtEventPattern &, const QEvent *)=0 |
| virtual | ~QwtPickerMachine () |
A state machine for QwtPicker selections.
QwtPickerMachine accepts key and mouse events and translates them into selection commands.
Commands - the output of a state machine.
Type of a selection.
| QwtPickerMachine::QwtPickerMachine | ( | SelectionType | type | ) |
Constructor.
| QwtPickerMachine::~QwtPickerMachine | ( | ) | [virtual] |
Destructor.
| void QwtPickerMachine::reset | ( | ) |
Set the current state to 0.
| QwtPickerMachine::SelectionType QwtPickerMachine::selectionType | ( | ) | const |
Return the selection type.
| void QwtPickerMachine::setState | ( | int | state | ) |
Change the current state.
| int QwtPickerMachine::state | ( | ) | const |
Return the current state.
| virtual QList<Command> QwtPickerMachine::transition | ( | const QwtEventPattern & | , |
| const QEvent * | |||
| ) | [pure virtual] |
Transition.
Implemented in QwtPickerTrackerMachine, QwtPickerClickPointMachine, QwtPickerDragPointMachine, QwtPickerClickRectMachine, QwtPickerDragRectMachine, and QwtPickerPolygonMachine.
1.7.3