QwtPickerMachine(3)            Qwt User's Guide            QwtPickerMachine(3)

NAME
       QwtPickerMachine - A state machine for QwtPicker selections.


SYNOPSIS
       #include <qwt_picker_machine.h>

       Inherited by QwtPickerClickPointMachine, QwtPickerClickRectMachine,
       QwtPickerDragLineMachine, QwtPickerDragPointMachine,
       QwtPickerDragRectMachine, QwtPickerPolygonMachine, and
       QwtPickerTrackerMachine.

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

   Public Member Functions
       QwtPickerMachine (SelectionType)
           Constructor.
       virtual ~QwtPickerMachine ()
           Destructor.
       virtual QList< Command > transition (const QwtEventPattern &, const
           QEvent *)=0
           Transition.
       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.

Detailed Description
       A state machine for QwtPicker selections.

       QwtPickerMachine accepts key and mouse events and translates them into
       selection commands.

       See also
           QwtEventPattern::MousePatternCode, QwtEventPattern::KeyPatternCode

       Definition at line 28 of file qwt_picker_machine.h.

Member Enumeration Documentation
   enum QwtPickerMachine::SelectionType
       Type of a selection.

       See also
           selectionType()

       Enumerator

       NoSelection
              The state machine not usable for any type of selection.

       PointSelection
              The state machine is for selecting a single point.

       RectSelection
              The state machine is for selecting a rectangle (2 points).

       PolygonSelection
              The state machine is for selecting a polygon (many points).

       Definition at line 35 of file qwt_picker_machine.h.


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

Version 6.2.0                   Sun Jul 18 2021            QwtPickerMachine(3)