.TH "QwtMagnifier" 3 "Tue Nov 20 2012" "Version 5.2.3" "Qwt User's Guide" \" -*- nroff -*- .ad l .nh .SH NAME QwtMagnifier \- .SH SYNOPSIS .br .PP .PP \fC#include \fP .PP Inherited by \fBQwtPlotMagnifier\fP\&. .SS "Public Member Functions" .in +1c .ti -1c .RI "\fBQwtMagnifier\fP (QWidget *)" .br .ti -1c .RI "virtual \fB~QwtMagnifier\fP ()" .br .ti -1c .RI "virtual bool \fBeventFilter\fP (QObject *, QEvent *)" .br .ti -1c .RI "void \fBgetMouseButton\fP (int &button, int &buttonState) const " .br .ti -1c .RI "void \fBgetZoomInKey\fP (int &key, int &modifiers) const " .br .ti -1c .RI "void \fBgetZoomOutKey\fP (int &key, int &modifiers) const " .br .ti -1c .RI "bool \fBisEnabled\fP () const " .br .ti -1c .RI "double \fBkeyFactor\fP () const " .br .ti -1c .RI "double \fBmouseFactor\fP () const " .br .ti -1c .RI "QWidget * \fBparentWidget\fP ()" .br .ti -1c .RI "const QWidget * \fBparentWidget\fP () const " .br .ti -1c .RI "void \fBsetEnabled\fP (bool)" .br .ti -1c .RI "void \fBsetKeyFactor\fP (double)" .br .ti -1c .RI "void \fBsetMouseButton\fP (int button, int buttonState=Qt::NoButton)" .br .ti -1c .RI "void \fBsetMouseFactor\fP (double)" .br .ti -1c .RI "void \fBsetWheelButtonState\fP (int buttonState)" .br .ti -1c .RI "void \fBsetWheelFactor\fP (double)" .br .ti -1c .RI "void \fBsetZoomInKey\fP (int key, int modifiers)" .br .ti -1c .RI "void \fBsetZoomOutKey\fP (int key, int modifiers)" .br .ti -1c .RI "int \fBwheelButtonState\fP () const " .br .ti -1c .RI "double \fBwheelFactor\fP () const " .br .in -1c .SS "Protected Member Functions" .in +1c .ti -1c .RI "virtual void \fBrescale\fP (double factor)=0" .br .ti -1c .RI "virtual void \fBwidgetKeyPressEvent\fP (QKeyEvent *)" .br .ti -1c .RI "virtual void \fBwidgetKeyReleaseEvent\fP (QKeyEvent *)" .br .ti -1c .RI "virtual void \fBwidgetMouseMoveEvent\fP (QMouseEvent *)" .br .ti -1c .RI "virtual void \fBwidgetMousePressEvent\fP (QMouseEvent *)" .br .ti -1c .RI "virtual void \fBwidgetMouseReleaseEvent\fP (QMouseEvent *)" .br .ti -1c .RI "virtual void \fBwidgetWheelEvent\fP (QWheelEvent *)" .br .in -1c .SH "Detailed Description" .PP \fBQwtMagnifier\fP provides zooming, by magnifying in steps\&. Using \fBQwtMagnifier\fP a plot can be zoomed in/out in steps using keys, the mouse wheel or moving a mouse button in vertical direction\&. .SH "Constructor & Destructor Documentation" .PP .SS "QwtMagnifier::QwtMagnifier (QWidget *parent)\fC [explicit]\fP" Constructor .PP \fBParameters:\fP .RS 4 \fIparent\fP Widget to be magnified .RE .PP .SH "Member Function Documentation" .PP .SS "bool QwtMagnifier::eventFilter (QObject *o, QEvent *e)\fC [virtual]\fP" .PP Event filter\&. When \fBisEnabled()\fP the mouse events of the observed widget are filtered\&. .PP \fBSee also:\fP .RS 4 \fBwidgetMousePressEvent()\fP, \fBwidgetMouseReleaseEvent()\fP, \fBwidgetMouseMoveEvent()\fP, \fBwidgetWheelEvent()\fP, \fBwidgetKeyPressEvent()\fP \fBwidgetKeyReleaseEvent()\fP .RE .PP .SS "void QwtMagnifier::getMouseButton (int &button, int &buttonState) const" \fBSee also:\fP .RS 4 \fBsetMouseButton()\fP .RE .PP .SS "void QwtMagnifier::getZoomInKey (int &key, int &modifiers) const" \fBSee also:\fP .RS 4 \fBsetZoomInKey()\fP .RE .PP .SS "void QwtMagnifier::getZoomOutKey (int &key, int &modifiers) const" \fBSee also:\fP .RS 4 \fBsetZoomOutKey()\fP .RE .PP .SS "bool QwtMagnifier::isEnabled () const" \fBReturns:\fP .RS 4 true when enabled, false otherwise .RE .PP \fBSee also:\fP .RS 4 \fBsetEnabled()\fP, \fBeventFilter()\fP .RE .PP .SS "double QwtMagnifier::keyFactor () const" \fBReturns:\fP .RS 4 Key factor .RE .PP \fBSee also:\fP .RS 4 \fBsetKeyFactor()\fP .RE .PP .SS "double QwtMagnifier::mouseFactor () const" \fBReturns:\fP .RS 4 Mouse factor .RE .PP \fBSee also:\fP .RS 4 \fBsetMouseFactor()\fP .RE .PP .SS "QWidget * QwtMagnifier::parentWidget ()" \fBReturns:\fP .RS 4 Parent widget, where the rescaling happens .RE .PP .SS "const QWidget * QwtMagnifier::parentWidget () const" \fBReturns:\fP .RS 4 Parent widget, where the rescaling happens .RE .PP .SS "virtual void QwtMagnifier::rescale (doublefactor)\fC [protected]\fP, \fC [pure virtual]\fP" Rescale the parent widget .PP \fBParameters:\fP .RS 4 \fIfactor\fP Scale factor .RE .PP .PP Implemented in \fBQwtPlotMagnifier\fP\&. .SS "void QwtMagnifier::setEnabled (boolon)" .PP En/disable the magnifier\&. When enabled is true an event filter is installed for the observed widget, otherwise the event filter is removed\&. .PP \fBParameters:\fP .RS 4 \fIon\fP true or false .RE .PP \fBSee also:\fP .RS 4 \fBisEnabled()\fP, \fBeventFilter()\fP .RE .PP .SS "void QwtMagnifier::setKeyFactor (doublefactor)" .PP 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\&. .PP \fBParameters:\fP .RS 4 \fIfactor\fP Key factor .RE .PP \fBSee also:\fP .RS 4 \fBkeyFactor()\fP, \fBsetZoomInKey()\fP, \fBsetZoomOutKey()\fP, \fBsetWheelFactor\fP, \fBsetMouseFactor()\fP .RE .PP .SS "void QwtMagnifier::setMouseButton (intbutton, intbuttonState = \fCQt::NoButton\fP)" Assign the mouse button, that is used for zooming in/out\&. The default value is Qt::RightButton\&. .PP \fBParameters:\fP .RS 4 \fIbutton\fP Button .br \fIbuttonState\fP Button state .RE .PP \fBSee also:\fP .RS 4 \fBgetMouseButton()\fP .RE .PP .SS "void QwtMagnifier::setMouseFactor (doublefactor)" .PP 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\&. .PP \fBParameters:\fP .RS 4 \fIfactor\fP Wheel factor .RE .PP \fBSee also:\fP .RS 4 \fBmouseFactor()\fP, \fBsetMouseButton()\fP, \fBsetWheelFactor()\fP, \fBsetKeyFactor()\fP .RE .PP .SS "void QwtMagnifier::setWheelButtonState (intbuttonState)" Assign a mandatory button state for zooming in/out using the wheel\&. The default button state is Qt::NoButton\&. .PP \fBParameters:\fP .RS 4 \fIbuttonState\fP Button state .RE .PP \fBSee also:\fP .RS 4 \fBwheelButtonState()\fP .RE .PP .SS "void QwtMagnifier::setWheelFactor (doublefactor)" .PP 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\&. .PP \fBParameters:\fP .RS 4 \fIfactor\fP Wheel factor .RE .PP \fBSee also:\fP .RS 4 \fBwheelFactor()\fP, \fBsetWheelButtonState()\fP, \fBsetMouseFactor()\fP, \fBsetKeyFactor()\fP .RE .PP .SS "void QwtMagnifier::setZoomInKey (intkey, intmodifiers)" Assign the key, that is used for zooming in\&. The default combination is Qt::Key_Plus + Qt::NoModifier\&. .PP \fBParameters:\fP .RS 4 \fIkey\fP .br \fImodifiers\fP .RE .PP \fBSee also:\fP .RS 4 \fBgetZoomInKey()\fP, \fBsetZoomOutKey()\fP .RE .PP .SS "void QwtMagnifier::setZoomOutKey (intkey, intmodifiers)" Assign the key, that is used for zooming out\&. The default combination is Qt::Key_Minus + Qt::NoModifier\&. .PP \fBParameters:\fP .RS 4 \fIkey\fP .br \fImodifiers\fP .RE .PP \fBSee also:\fP .RS 4 \fBgetZoomOutKey()\fP, \fBsetZoomOutKey()\fP .RE .PP .SS "int QwtMagnifier::wheelButtonState () const" \fBReturns:\fP .RS 4 Wheel button state .RE .PP \fBSee also:\fP .RS 4 \fBsetWheelButtonState()\fP .RE .PP .SS "double QwtMagnifier::wheelFactor () const" \fBReturns:\fP .RS 4 Wheel factor .RE .PP \fBSee also:\fP .RS 4 \fBsetWheelFactor()\fP .RE .PP .SS "void QwtMagnifier::widgetKeyPressEvent (QKeyEvent *ke)\fC [protected]\fP, \fC [virtual]\fP" Handle a key press event for the observed widget\&. .PP \fBParameters:\fP .RS 4 \fIke\fP Key event .RE .PP \fBSee also:\fP .RS 4 \fBeventFilter()\fP, \fBwidgetKeyReleaseEvent()\fP .RE .PP .SS "void QwtMagnifier::widgetKeyReleaseEvent (QKeyEvent *)\fC [protected]\fP, \fC [virtual]\fP" Handle a key release event for the observed widget\&. .PP \fBParameters:\fP .RS 4 \fIke\fP Key event .RE .PP \fBSee also:\fP .RS 4 \fBeventFilter()\fP, \fBwidgetKeyReleaseEvent()\fP .RE .PP .SS "void QwtMagnifier::widgetMouseMoveEvent (QMouseEvent *me)\fC [protected]\fP, \fC [virtual]\fP" Handle a mouse move event for the observed widget\&. .PP \fBParameters:\fP .RS 4 \fIme\fP Mouse event .RE .PP \fBSee also:\fP .RS 4 \fBeventFilter()\fP, \fBwidgetMousePressEvent()\fP, \fBwidgetMouseReleaseEvent()\fP, .RE .PP .SS "void QwtMagnifier::widgetMousePressEvent (QMouseEvent *me)\fC [protected]\fP, \fC [virtual]\fP" Handle a mouse press event for the observed widget\&. .PP \fBParameters:\fP .RS 4 \fIme\fP Mouse event .RE .PP \fBSee also:\fP .RS 4 \fBeventFilter()\fP, \fBwidgetMouseReleaseEvent()\fP, \fBwidgetMouseMoveEvent()\fP .RE .PP .SS "void QwtMagnifier::widgetMouseReleaseEvent (QMouseEvent *)\fC [protected]\fP, \fC [virtual]\fP" Handle a mouse release event for the observed widget\&. .PP \fBSee also:\fP .RS 4 \fBeventFilter()\fP, \fBwidgetMousePressEvent()\fP, \fBwidgetMouseMoveEvent()\fP, .RE .PP .SS "void QwtMagnifier::widgetWheelEvent (QWheelEvent *we)\fC [protected]\fP, \fC [virtual]\fP" Handle a wheel event for the observed widget\&. .PP \fBParameters:\fP .RS 4 \fIwe\fP Wheel event .RE .PP \fBSee also:\fP .RS 4 \fBeventFilter()\fP .RE .PP .SH "Author" .PP Generated automatically by Doxygen for Qwt User's Guide from the source code\&.