QwtPickerMachine - A state machine for QwtPicker selections.

NAME  SYNOPSIS  Public Types  Public Member Functions  Detailed Description  Member Enumeration Documentation  enum QwtPickerMachine::Command  enum QwtPickerMachine::SelectionType  Constructor & Destructor Documentation  QwtPickerMachine::QwtPickerMachine (SelectionType type) [explicit]  QwtPickerMachine::˜QwtPickerMachine () [virtual]  Member Function Documentation  void QwtPickerMachine::reset ()  QwtPickerMachine::SelectionType QwtPickerMachine::selectionType () const  void QwtPickerMachine::setState (int state)  int QwtPickerMachine::state () const  virtual QList< Command > QwtPickerMachine::transition (constQwtEventPattern & , const QEvent * ) [pure virtual]  Author 

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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::Command

Commands - the output of a state machine.

Definition at line 51 of file qwt_picker_machine.h.

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.

Constructor & Destructor Documentation

QwtPickerMachine::QwtPickerMachine (SelectionType type) [explicit]

Constructor.

Definition at line 16 of file qwt_picker_machine.cpp.

QwtPickerMachine::˜QwtPickerMachine () [virtual]

Destructor.

Definition at line 23 of file qwt_picker_machine.cpp.

Member Function Documentation

void QwtPickerMachine::reset ()

Set the current state to 0.

Definition at line 46 of file qwt_picker_machine.cpp.

QwtPickerMachine::SelectionType QwtPickerMachine::selectionType () const

Return the selection type.

Definition at line 28 of file qwt_picker_machine.cpp.

void QwtPickerMachine::setState (int state)

Change the current state.

Definition at line 40 of file qwt_picker_machine.cpp.

int QwtPickerMachine::state () const

Return the current state.

Definition at line 34 of file qwt_picker_machine.cpp.

virtual QList< Command > QwtPickerMachine::transition (constQwtEventPattern & , const QEvent * ) [pure virtual]

Transition.

Implemented in QwtPickerClickPointMachine, QwtPickerClickRectMachine, QwtPickerDragLineMachine, QwtPickerDragPointMachine, QwtPickerDragRectMachine, QwtPickerPolygonMachine, and QwtPickerTrackerMachine.

Author

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

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