Public Types¶

enum ScalePosition { NoScale, LeadingScale, TrailingScale }

Public Member Functions¶

QwtSlider (QWidget *parent=NULL)
QwtSlider (Qt::Orientation, QWidget *parent=NULL)
virtual ~QwtSlider ()
Destructor. void setOrientation (Qt::Orientation)
Set the orientation. Qt::Orientation orientation () const
void setScalePosition (ScalePosition)
Change the position of the scale. ScalePosition scalePosition () const
void setTrough (bool)
bool hasTrough () const
void setGroove (bool)
bool hasGroove () const
void setHandleSize (const QSize &)
Set the slider's handle size. QSize handleSize () const
void setBorderWidth (int)
Change the slider's border width. int borderWidth () const
void setSpacing (int)
Change the spacing between trough and scale. int spacing () const
virtual QSize sizeHint () const
virtual QSize minimumSizeHint () const
void setScaleDraw (QwtScaleDraw *)
Set a scale draw. const QwtScaleDraw * scaleDraw () const
void setUpdateInterval (int)
Specify the update interval for automatic scrolling. int updateInterval () const

Protected Member Functions¶

virtual double scrolledTo (const QPoint &) const
Determine the value for a new position of the slider handle. virtual bool isScrollPosition (const QPoint &) const
Determine what to do when the user presses a mouse button. virtual void drawSlider (QPainter *, const QRect &) const
virtual void drawHandle (QPainter *, const QRect &, int pos) const
virtual void mousePressEvent (QMouseEvent *)
virtual void mouseReleaseEvent (QMouseEvent *)
virtual void resizeEvent (QResizeEvent *)
virtual void paintEvent (QPaintEvent *)
virtual void changeEvent (QEvent *)
virtual void timerEvent (QTimerEvent *)
virtual void scaleChange ()
Notify changed scale. QRect sliderRect () const
QRect handleRect () const

Additional Inherited Members¶

enum QwtSlider::ScalePosition¶

Position of the scale

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Enumerator

NoScale

The slider has no scale.

LeadingScale

The scale is right of a vertical or below a horizontal slider.

TrailingScale

The scale is left of a vertical or above a horizontal slider.

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

Construct vertical slider in QwtSlider::Trough style with a scale to the left.

The scale is initialized to [0.0, 100.0] and the value set to 0.0.

Parameters:

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QwtSlider::QwtSlider (Qt::Orientation orientation, QWidget * parent = NULL) [explicit]¶

Construct a slider in QwtSlider::Trough style

When orientation is Qt::Vertical the scale will be aligned to the left - otherwise at the the top of the slider.

The scale is initialized to [0.0, 100.0] and the value set to 0.0.

Parameters:

int QwtSlider::borderWidth () const¶

Returns:

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void QwtSlider::changeEvent (QEvent * event) [protected], [virtual]¶

Handles QEvent::StyleChange and QEvent::FontChange events

Parameters:

void QwtSlider::drawHandle (QPainter * painter, const QRect & handleRect, int pos) const [protected], [virtual]¶

Draw the thumb at a position

Parameters:

void QwtSlider::drawSlider (QPainter * painter, const QRect & sliderRect) const [protected], [virtual]¶

Draw the slider into the specified rectangle.

Parameters:

QRect QwtSlider::handleRect () const [protected]¶

Returns:

QSize QwtSlider::handleSize () const¶

Returns:

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bool QwtSlider::hasGroove () const¶

Returns:

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bool QwtSlider::hasTrough () const¶

Returns:

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bool QwtSlider::isScrollPosition (const QPoint & pos) const [protected], [virtual]¶

Determine what to do when the user presses a mouse button.

Parameters:

Return values:

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Implements QwtAbstractSlider.

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

Returns:

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void QwtSlider::mousePressEvent (QMouseEvent * event) [protected], [virtual]¶

Mouse press event handler

Parameters:

Reimplemented from QwtAbstractSlider.

void QwtSlider::mouseReleaseEvent (QMouseEvent * event) [protected], [virtual]¶

Mouse release event handler

Parameters:

Reimplemented from QwtAbstractSlider.

Qt::Orientation QwtSlider::orientation () const¶

Returns:

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

Qt paint event handler

Parameters:

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

Qt resize event handler

Parameters:

const QwtScaleDraw * QwtSlider::scaleDraw () const¶

Returns:

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QwtSlider::ScalePosition QwtSlider::scalePosition () const¶

Returns:

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double QwtSlider::scrolledTo (const QPoint & pos) const [protected], [virtual]¶

Determine the value for a new position of the slider handle.

Parameters:

Returns:

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Implements QwtAbstractSlider.

void QwtSlider::setBorderWidth (int width)¶

Change the slider's border width. The border width is used for drawing the slider handle and the trough.

Parameters:

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void QwtSlider::setGroove (bool on)¶

En/Disable the groove

The slider can be cutomized by showing a groove for the handle.

Parameters:

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void QwtSlider::setHandleSize (const QSize & size)¶

Set the slider's handle size. When the size is empty the slider handle will be painted with a default size depending on its orientation() and backgroundStyle().

Parameters:

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void QwtSlider::setOrientation (Qt::Orientation orientation)¶

Set the orientation.

Parameters:

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void QwtSlider::setScaleDraw (QwtScaleDraw * scaleDraw)¶

Set a scale draw. For changing the labels of the scales, it is necessary to derive from QwtScaleDraw and overload QwtScaleDraw::label().

Parameters:

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void QwtSlider::setScalePosition (ScalePosition scalePosition)¶

Change the position of the scale.

Parameters:

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void QwtSlider::setSpacing (int spacing)¶

Change the spacing between trough and scale. A spacing of 0 means, that the backbone of the scale is covered by the trough.

The default setting is 4 pixels.

Parameters:

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void QwtSlider::setTrough (bool on)¶

En/Disable the trough

The slider can be cutomized by showing a trough for the handle.

Parameters:

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void QwtSlider::setUpdateInterval (int interval)¶

Specify the update interval for automatic scrolling. The minimal accepted value is 50 ms.

Parameters:

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QSize QwtSlider::sizeHint () const [virtual]¶

Returns:

QRect QwtSlider::sliderRect () const [protected]¶

Returns:

int QwtSlider::spacing () const¶

Returns:

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void QwtSlider::timerEvent (QTimerEvent * event) [protected], [virtual]¶

Timer event handler

Handles the timer, when the mouse stays pressed inside the sliderRect().

Parameters:

int QwtSlider::updateInterval () const¶

Returns:

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