NAME¶

QwtWheel - The Wheel Widget.

SYNOPSIS¶

#include <qwt_wheel.h> Inherits QwtAbstractSlider.

Public Slots¶

void setTotalAngle (double) void setViewAngle (double)

Public Member Functions¶

QwtWheel (QWidget *parent=NULL) virtual ~QwtWheel () virtual void setOrientation (Qt::Orientation) double totalAngle () const double viewAngle () const void setTickCnt (int) int tickCnt () const void setMass (double) double mass () const void setWheelWidth (int) int wheelWidth () const void setWheelBorderWidth (int) int wheelBorderWidth () const void setBorderWidth (int) int borderWidth () const QRect wheelRect () const virtual QSize sizeHint () const virtual QSize minimumSizeHint () const

Protected Member Functions¶

virtual void paintEvent (QPaintEvent *) virtual void resizeEvent (QResizeEvent *) virtual void drawTicks (QPainter *, const QRectF &) virtual void drawWheelBackground (QPainter *, const QRectF &) virtual void valueChange () virtual double getValue (const QPoint &) virtual void getScrollMode (const QPoint &, QwtAbstractSlider::ScrollMode &, int &direction) const

Detailed Description¶

The Wheel Widget. The wheel widget can be used to change values over a very large range in very small steps. Using the setMass member, it can be configured as a flywheel. See also:

Constructor & Destructor Documentation¶

QwtWheel::QwtWheel (QWidget *parent = NULL) [explicit]¶

Constructor.

QwtWheel::~QwtWheel () [virtual]¶

Destructor.

Member Function Documentation¶

int QwtWheel::borderWidth () const Returns:¶

See also:

void QwtWheel::drawTicks (QPainter *painter, const QRectF &rect) [protected, virtual] Draw the Wheel's ticks¶

Parameters:

void QwtWheel::drawWheelBackground (QPainter *painter, const QRectF &rect) [protected, virtual] Draw the Wheel's background gradient¶

Parameters:

void QwtWheel::getScrollMode (const QPoint &p, QwtAbstractSlider::ScrollMode &scrollMode, int &direction) const [protected, virtual]¶

Determine the scrolling mode and direction corresponding to a specified point. Parameters: Implements QwtAbstractSlider.

double QwtWheel::getValue (const QPoint &p) [protected, virtual]¶

Determine the value corresponding to a specified point. Implements QwtAbstractSlider.

double QwtWheel::mass () const [virtual] Returns:¶

Reimplemented from QwtAbstractSlider.

QSize QwtWheel::minimumSizeHint () const [virtual]¶

Return a minimum size hint. Warning:

void QwtWheel::paintEvent (QPaintEvent *event) [protected, virtual]¶

Qt Paint Event. Parameters:

void QwtWheel::resizeEvent (QResizeEvent *event) [protected, virtual]¶

Qt Resize Event. Parameters:

void QwtWheel::setBorderWidth (intwidth)¶

Set the border width. The border defaults to 2. Parameters: See also:

void QwtWheel::setMass (doublemass) [virtual]¶

Set the mass of the wheel. Assigning a mass turns the wheel into a flywheel. Parameters: Reimplemented from QwtAbstractSlider.

void QwtWheel::setOrientation (Qt::Orientationo) [virtual]¶

Set the wheel's orientation. Parameters: See also: Reimplemented from QwtAbstractSlider.

void QwtWheel::setTickCnt (intcnt)¶

Adjust the number of grooves in the wheel's surface. The number of grooves is limited to 6 <= cnt <= 50. Values outside this range will be clipped. The default value is 10. Parameters: See also:

void QwtWheel::setTotalAngle (doubleangle) [slot]¶

Set the total angle which the wheel can be turned. One full turn of the wheel corresponds to an angle of 360 degrees. A total angle of n*360 degrees means that the wheel has to be turned n times around its axis to get from the minimum value to the maximum value. The default setting of the total angle is 360 degrees. Parameters: See also:

void QwtWheel::setViewAngle (doubleangle) [slot]¶

Specify the visible portion of the wheel. You may use this function for fine-tuning the appearance of the wheel. The default value is 175 degrees. The value is limited from 10 to 175 degrees. Parameters: See also:

void QwtWheel::setWheelBorderWidth (intborderWidth)¶

Set the wheel border width of the wheel. The wheel border must not be smaller than 1 and is limited in dependence on the wheel's size. Values outside the allowed range will be clipped. The wheel border defaults to 2. Parameters: See also:

void QwtWheel::setWheelWidth (intwidth)¶

Set the width of the wheel. Corresponds to the wheel height for horizontal orientation, and the wheel width for vertical orientation. Parameters: See also:

QSize QwtWheel::sizeHint () const [virtual] Returns:¶

int QwtWheel::tickCnt () const Returns:¶

See also:

double QwtWheel::totalAngle () const Returns:¶

See also:

void QwtWheel::valueChange () [protected, virtual]¶

Notify value change. Reimplemented from QwtAbstractSlider.

double QwtWheel::viewAngle () const Returns:¶

See also:

int QwtWheel::wheelBorderWidth () const Returns:¶

See also:

QRect QwtWheel::wheelRect () const Returns:¶

int QwtWheel::wheelWidth () const Returns:¶

See also:

Author¶

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