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NAME

       QwtEventPattern -

SYNOPSIS

       #include <qwt_event_pattern.h>

       Inherited by QwtPicker.

   Classes
       class KeyPattern
           A pattern for key events.
       class MousePattern
           A pattern for mouse events.

   Public Types
       enum KeyPatternCode { KeySelect1, KeySelect2, KeyAbort, KeyLeft, KeyRight, KeyUp, KeyDown,
           KeyRedo, KeyUndo, KeyHome, KeyPatternCount }
       enum MousePatternCode { MouseSelect1, MouseSelect2, MouseSelect3, MouseSelect4,
           MouseSelect5, MouseSelect6, MousePatternCount }

   Public Member Functions
       QwtEventPattern ()
       virtual ~QwtEventPattern ()
       void initKeyPattern ()
       void initMousePattern (int numButtons)
       bool keyMatch (uint pattern, const QKeyEvent *) const
       const QwtArray< KeyPattern > & keyPattern () const
       QwtArray< KeyPattern > & keyPattern ()
       bool mouseMatch (uint pattern, const QMouseEvent *) const
       const QwtArray< MousePattern > & mousePattern () const
       QwtArray< MousePattern > & mousePattern ()
       void setKeyPattern (uint pattern, int key, int state=Qt::NoButton)
       void setKeyPattern (const QwtArray< KeyPattern > &)
       void setMousePattern (uint pattern, int button, int state=Qt::NoButton)
       void setMousePattern (const QwtArray< MousePattern > &)

   Protected Member Functions
       virtual bool keyMatch (const KeyPattern &, const QKeyEvent *) const
       virtual bool mouseMatch (const MousePattern &, const QMouseEvent *) const

Detailed Description

       A collection of event patterns.

       QwtEventPattern introduces an level of indirection for mouse and keyboard inputs. Those
       are represented by symbolic names, so the application code can be configured by individual
       mappings.

       See also:
           QwtPicker, QwtPickerMachine, QwtPlotZoomer

Member Enumeration Documentation

   enum QwtEventPattern::KeyPatternCode
       Symbolic keyboard input codes. Default initialization:

       · KeySelect1
          Qt::Key_Return

       · KeySelect2
          Qt::Key_Space

       · KeyAbort
          Qt::Key_Escape

       · KeyLeft
          Qt::Key_Left

       · KeyRight
          Qt::Key_Right

       · KeyUp
          Qt::Key_Up

       · KeyDown
          Qt::Key_Down

       · KeyUndo
          Qt::Key_Minus

       · KeyRedo
          Qt::Key_Plus

       · KeyHome
          Qt::Key_Escape

   enum QwtEventPattern::MousePatternCode
       Symbolic mouse input codes. The default initialization for 3 button mice is:

       · MouseSelect1
          Qt::LeftButton

       · MouseSelect2
          Qt::RightButton

       · MouseSelect3
          Qt::MidButton

       · MouseSelect4
          Qt::LeftButton + Qt::ShiftButton

       · MouseSelect5
          Qt::RightButton + Qt::ShiftButton

       · MouseSelect6
          Qt::MidButton + Qt::ShiftButton

       The default initialization for 2 button mice is:

       · MouseSelect1
          Qt::LeftButton

       · MouseSelect2
          Qt::RightButton

       · MouseSelect3
          Qt::LeftButton + Qt::AltButton

       · MouseSelect4
          Qt::LeftButton + Qt::ShiftButton

       · MouseSelect5
          Qt::RightButton + Qt::ShiftButton

       · MouseSelect6
          Qt::LeftButton + Qt::AltButton + Qt::ShiftButton

       The default initialization for 1 button mice is:

       · MouseSelect1
          Qt::LeftButton

       · MouseSelect2
          Qt::LeftButton + Qt::ControlButton

       · MouseSelect3
          Qt::LeftButton + Qt::AltButton

       · MouseSelect4
          Qt::LeftButton + Qt::ShiftButton

       · MouseSelect5
          Qt::LeftButton + Qt::ControlButton + Qt::ShiftButton

       · MouseSelect6
          Qt::LeftButton + Qt::AltButton + Qt::ShiftButton

       See also:
           initMousePattern()

Constructor & Destructor Documentation

   QwtEventPattern::QwtEventPattern ()
       Constructor

       See also:
           MousePatternCode, KeyPatternCode

Member Function Documentation

   void QwtEventPattern::initKeyPattern ()
       Set default mouse patterns.

       See also:
           KeyPatternCode

   void QwtEventPattern::initMousePattern (intnumButtons)
       Set default mouse patterns, depending on the number of mouse buttons

       Parameters:
           numButtons Number of mouse buttons ( <= 3 )

       See also:
           MousePatternCode

   bool QwtEventPattern::keyMatch (uintpattern, const QKeyEvent *e) const
       Compare a key event with an event pattern. A key event matches the pattern when both have
       the same key value and in the state value the same key flags (Qt::KeyButtonMask) are set.

       Parameters:
           pattern Index of the event pattern
           e Key event

       Returns:
           true if matches

       See also:
           mouseMatch()

   bool QwtEventPattern::keyMatch (const KeyPattern &pattern, const QKeyEvent *e) const
       [protected],  [virtual]
       Compare a key event with an event pattern. A key event matches the pattern when both have
       the same key value and in the state value the same key flags (Qt::KeyButtonMask) are set.

       Parameters:
           pattern Key event pattern
           e Key event

       Returns:
           true if matches

       See also:
           mouseMatch()

   bool QwtEventPattern::mouseMatch (uintpattern, const QMouseEvent *e) const
       Compare a mouse event with an event pattern. A mouse event matches the pattern when both
       have the same button value and in the state value the same key flags(Qt::KeyButtonMask)
       are set.

       Parameters:
           pattern Index of the event pattern
           e Mouse event

       Returns:
           true if matches

       See also:
           keyMatch()

   bool QwtEventPattern::mouseMatch (const MousePattern &pattern, const QMouseEvent *e) const
       [protected],  [virtual]
       Compare a mouse event with an event pattern. A mouse event matches the pattern when both
       have the same button value and in the state value the same key flags(Qt::KeyButtonMask)
       are set.

       Parameters:
           pattern Mouse event pattern
           e Mouse event

       Returns:
           true if matches

       See also:
           keyMatch()

   void QwtEventPattern::setKeyPattern (uintpattern, intkey, intstate = Qt::NoButton)
       Change one key pattern

       Parameters:
           pattern Index of the pattern
           key Key
           state State

       See also:
           QKeyEvent

   void QwtEventPattern::setMousePattern (uintpattern, intbutton, intstate = Qt::NoButton)
       Change one mouse pattern

       Parameters:
           pattern Index of the pattern
           button Button
           state State

       See also:
           QMouseEvent

Author

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