Public Member Functions¶

QwtMagnifier (QWidget *)
virtual ~QwtMagnifier ()
virtual bool eventFilter (QObject *, QEvent *)
void getMouseButton (int &button, int &buttonState) const
void getZoomInKey (int &key, int &modifiers) const
void getZoomOutKey (int &key, int &modifiers) const
bool isEnabled () const
double keyFactor () const
double mouseFactor () const
QWidget * parentWidget ()
const QWidget * parentWidget () const
void setEnabled (bool)
void setKeyFactor (double)
void setMouseButton (int button, int buttonState=Qt::NoButton)
void setMouseFactor (double)
void setWheelButtonState (int buttonState)
void setWheelFactor (double)
void setZoomInKey (int key, int modifiers)
void setZoomOutKey (int key, int modifiers)
int wheelButtonState () const
double wheelFactor () const

Protected Member Functions¶

virtual void rescale (double factor)=0
virtual void widgetKeyPressEvent (QKeyEvent *)
virtual void widgetKeyReleaseEvent (QKeyEvent *)
virtual void widgetMouseMoveEvent (QMouseEvent *)
virtual void widgetMousePressEvent (QMouseEvent *)
virtual void widgetMouseReleaseEvent (QMouseEvent *)
virtual void widgetWheelEvent (QWheelEvent *)

QwtMagnifier::QwtMagnifier (QWidget *parent) [explicit]¶

Constructor

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bool QwtMagnifier::eventFilter (QObject *o, QEvent *e) [virtual]¶

Event filter. When isEnabled() the mouse events of the observed widget are filtered.

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void QwtMagnifier::getMouseButton (int &button, int &buttonState) const¶

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void QwtMagnifier::getZoomInKey (int &key, int &modifiers) const¶

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void QwtMagnifier::getZoomOutKey (int &key, int &modifiers) const¶

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bool QwtMagnifier::isEnabled () const¶

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double QwtMagnifier::keyFactor () const¶

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double QwtMagnifier::mouseFactor () const¶

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QWidget * QwtMagnifier::parentWidget ()¶

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const QWidget * QwtMagnifier::parentWidget () const¶

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virtual void QwtMagnifier::rescale (doublefactor) [protected], [pure virtual]¶

Rescale the parent widget

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Implemented in QwtPlotMagnifier.

void QwtMagnifier::setEnabled (boolon)¶

En/disable the magnifier. When enabled is true an event filter is installed for the observed widget, otherwise the event filter is removed.

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void QwtMagnifier::setKeyFactor (doublefactor)¶

Change the key factor. The key factor defines the ratio between the current range on the parent widget and the zoomed range for each key press of the zoom in/out keys. The default value is 0.9.

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void QwtMagnifier::setMouseButton (intbutton, intbuttonState = Qt::NoButton)¶

Assign the mouse button, that is used for zooming in/out. The default value is Qt::RightButton.

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void QwtMagnifier::setMouseFactor (doublefactor)¶

Change the mouse factor. The mouse factor defines the ratio between the current range on the parent widget and the zoomed range for each vertical mouse movement. The default value is 0.95.

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void QwtMagnifier::setWheelButtonState (intbuttonState)¶

Assign a mandatory button state for zooming in/out using the wheel. The default button state is Qt::NoButton.

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void QwtMagnifier::setWheelFactor (doublefactor)¶

Change the wheel factor. The wheel factor defines the ratio between the current range on the parent widget and the zoomed range for each step of the wheel. The default value is 0.9.

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void QwtMagnifier::setZoomInKey (intkey, intmodifiers)¶

Assign the key, that is used for zooming in. The default combination is Qt::Key_Plus + Qt::NoModifier.

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void QwtMagnifier::setZoomOutKey (intkey, intmodifiers)¶

Assign the key, that is used for zooming out. The default combination is Qt::Key_Minus + Qt::NoModifier.

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int QwtMagnifier::wheelButtonState () const¶

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double QwtMagnifier::wheelFactor () const¶

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void QwtMagnifier::widgetKeyPressEvent (QKeyEvent *ke) [protected], [virtual]¶

Handle a key press event for the observed widget.

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void QwtMagnifier::widgetKeyReleaseEvent (QKeyEvent *) [protected], [virtual]¶

Handle a key release event for the observed widget.

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void QwtMagnifier::widgetMouseMoveEvent (QMouseEvent *me) [protected], [virtual]¶

Handle a mouse move event for the observed widget.

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void QwtMagnifier::widgetMousePressEvent (QMouseEvent *me) [protected], [virtual]¶

Handle a mouse press event for the observed widget.

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void QwtMagnifier::widgetMouseReleaseEvent (QMouseEvent *) [protected], [virtual]¶

Handle a mouse release event for the observed widget.

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void QwtMagnifier::widgetWheelEvent (QWheelEvent *we) [protected], [virtual]¶

Handle a wheel event for the observed widget.

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