Qwt User's Guide: QwtEventPattern Class Reference

Qwt User's Guide 6.1.6

Classes | Public Types | Public Member Functions | Protected Member Functions | List of all members
QwtEventPattern Class Reference

A collection of event patterns. More...

`#include <qwt_event_pattern.h>`

Inheritance diagram for QwtEventPattern:
[legend]

## Classes
class | KeyPattern
| A pattern for key events. More...
class | MousePattern
| A pattern for mouse events. More...

## Public Types
enum | MousePatternCode { MouseSelect1, MouseSelect2, MouseSelect3, MouseSelect4, MouseSelect5, MouseSelect6, MousePatternCount }
| Symbolic mouse input codes. More...
enum | KeyPatternCode { KeySelect1, KeySelect2, KeyAbort, KeyLeft, KeyRight, KeyUp, KeyDown, KeyRedo, KeyUndo, KeyHome, KeyPatternCount }
| Symbolic keyboard input codes. More...

## Public Member Functions
| QwtEventPattern ()
virtual | ~QwtEventPattern ()
| Destructor.
void | initMousePattern (int numButtons)
void | initKeyPattern ()
void | setMousePattern (MousePatternCode, Qt::MouseButton button, Qt::KeyboardModifiers=Qt::NoModifier)
void | setKeyPattern (KeyPatternCode, int key, Qt::KeyboardModifiers modifiers=Qt::NoModifier)
void | setMousePattern (const QVector< MousePattern > &)
| Change the mouse event patterns.
void | setKeyPattern (const QVector< KeyPattern > &)
| Change the key event patterns.
const QVector< MousePattern > & | mousePattern () const
const QVector< KeyPattern > & | keyPattern () const
QVector< MousePattern > & | mousePattern ()
QVector< KeyPattern > & | keyPattern ()
bool | mouseMatch (MousePatternCode, const QMouseEvent *) const
| Compare a mouse event with an event pattern. More...
bool | keyMatch (KeyPatternCode, const QKeyEvent *) const
| Compare a key event with an event pattern. More...

## Protected Member Functions
virtual bool | mouseMatch (const MousePattern &, const QMouseEvent *) const
| Compare a mouse event with an event pattern. More...
virtual bool | keyMatch (const KeyPattern &, const QKeyEvent *) const
| Compare a key event with an event pattern. More...

## 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

## ◆ KeyPatternCode

enum QwtEventPattern::KeyPatternCode

Symbolic keyboard input codes.

Individual settings can be configured using setKeyPattern()

See also
  setKeyPattern(), setMousePattern()

Enumerator
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.
KeyRedo | Qt::Key_Plus.
KeyUndo | Qt::Key_Minus.
KeyHome | Qt::Key_Escape.
KeyPatternCount | Number of key patterns.

## ◆ MousePatternCode

enum QwtEventPattern::MousePatternCode

Symbolic mouse input codes.

QwtEventPattern implements 3 different settings for mice with 1, 2, or 3 buttons that can be activated using initMousePattern(). The default setting is for 3 button mice.

Individual settings can be configured using setMousePattern().

See also
  initMousePattern(), setMousePattern(), setKeyPattern()

Enumerator
MouseSelect1 | The default setting for 1, 2 and 3 button mice is: Qt::LeftButton Qt::LeftButton Qt::LeftButton
MouseSelect2 | The default setting for 1, 2 and 3 button mice is: Qt::LeftButton + Qt::ControlModifier Qt::RightButton Qt::RightButton
MouseSelect3 | The default setting for 1, 2 and 3 button mice is: Qt::LeftButton + Qt::AltModifier Qt::LeftButton + Qt::AltModifier Qt::MidButton
MouseSelect4 | The default setting for 1, 2 and 3 button mice is: Qt::LeftButton + Qt::ShiftModifier Qt::LeftButton + Qt::ShiftModifier Qt::LeftButton + Qt::ShiftModifier
MouseSelect5 | The default setting for 1, 2 and 3 button mice is: Qt::LeftButton + Qt::ControlButton | Qt::ShiftModifier Qt::RightButton + Qt::ShiftModifier Qt::RightButton + Qt::ShiftModifier
MouseSelect6 | The default setting for 1, 2 and 3 button mice is: Qt::LeftButton + Qt::AltModifier + Qt::ShiftModifier Qt::LeftButton + Qt::AltModifier | Qt::ShiftModifier Qt::MidButton + Qt::ShiftModifier
MousePatternCount | Number of mouse patterns.

## Constructor & Destructor Documentation

## ◆ QwtEventPattern()

QwtEventPattern::QwtEventPattern | ( |  | ) |

Constructor

See also
  MousePatternCode, KeyPatternCode

## Member Function Documentation

## ◆ initKeyPattern()

void QwtEventPattern::initKeyPattern | ( |  | ) |

Set default mouse patterns.

See also
  KeyPatternCode

## ◆ initMousePattern()

void QwtEventPattern::initMousePattern | ( | int | numButtons | ) |

Set default mouse patterns, depending on the number of mouse buttons

Parameters

  numButtons | Number of mouse buttons ( <= 3 )

See also
  MousePatternCode

## ◆ keyMatch() [1/2]

bool QwtEventPattern::keyMatch | ( | const KeyPattern & | pattern,
|  | const QKeyEvent * | event
| ) |  | const
| protectedvirtual

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
  event | Key event

Returns
  true if matches

See also
  mouseMatch()

## ◆ keyMatch() [2/2]

bool QwtEventPattern::keyMatch | ( | KeyPatternCode | code,
|  | const QKeyEvent * | event
| ) |  | 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

  code | Index of the event pattern
  event | Key event

Returns
  true if matches

See also
  mouseMatch()

## ◆ keyPattern() [1/2]

QVector< QwtEventPattern::KeyPattern > & QwtEventPattern::keyPattern | ( |  | ) |

Returns
  Key pattern

## ◆ keyPattern() [2/2]

const QVector< QwtEventPattern::KeyPattern > & QwtEventPattern::keyPattern | ( |  | ) | const

Returns
  Key pattern

## ◆ mouseMatch() [1/2]

bool QwtEventPattern::mouseMatch | ( | const MousePattern & | pattern,
|  | const QMouseEvent * | event
| ) |  | const
| protectedvirtual

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
  event | Mouse event

Returns
  true if matches

See also
  keyMatch()

## ◆ mouseMatch() [2/2]

bool QwtEventPattern::mouseMatch | ( | MousePatternCode | code,
|  | const QMouseEvent * | event
| ) |  | 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

  code | Index of the event pattern
  event | Mouse event

Returns
  true if matches

See also
  keyMatch()

## ◆ mousePattern() [1/2]

QVector< QwtEventPattern::MousePattern > & QwtEventPattern::mousePattern | ( |  | ) |

Returns
  Mouse pattern

## ◆ mousePattern() [2/2]

const QVector< QwtEventPattern::MousePattern > & QwtEventPattern::mousePattern | ( |  | ) | const

Returns
  Mouse pattern

## ◆ setKeyPattern()

void QwtEventPattern::setKeyPattern | ( | KeyPatternCode | pattern,
|  | int | key,
|  | Qt::KeyboardModifiers | modifiers = `Qt::NoModifier`
| ) |  |

Change one key pattern

Parameters

  pattern | Index of the pattern
  key | Key
  modifiers | Keyboard modifiers

See also
  QKeyEvent

## ◆ setMousePattern()

void QwtEventPattern::setMousePattern | ( | MousePatternCode | pattern,
|  | Qt::MouseButton | button,
|  | Qt::KeyboardModifiers | modifiers = `Qt::NoModifier`
| ) |  |

Change one mouse pattern

Parameters

  pattern | Index of the pattern
  button | Button
  modifiers | Keyboard modifiers

See also
  QMouseEvent