.TH "QwtSlider" 3 "Tue Nov 20 2012" "Version 5.2.3" "Qwt User's Guide" \" -*- nroff -*-
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.SH NAME
QwtSlider \- 
.SH SYNOPSIS
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.PP
.PP
\fC#include <qwt_slider\&.h>\fP
.PP
Inherits \fBQwtAbstractSlider\fP, and \fBQwtAbstractScale\fP\&.
.SS "Public Types"

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.RI "enum \fBBGSTYLE\fP { \fBBgTrough\fP =  0x1, \fBBgSlot\fP =  0x2, \fBBgBoth\fP =  BgTrough | BgSlot }"
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.RI "enum \fBScalePos\fP { \fBNoScale\fP, \fBLeftScale\fP, \fBRightScale\fP, \fBTopScale\fP, \fBBottomScale\fP }"
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.SS "Public Member Functions"

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.RI "\fBQwtSlider\fP (QWidget *parent, Qt::Orientation=Qt::Horizontal, \fBScalePos\fP=NoScale, \fBBGSTYLE\fP \fBbgStyle\fP=BgTrough)"
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.RI "\fBBGSTYLE\fP \fBbgStyle\fP () const "
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.RI "int \fBborderWidth\fP () const "
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.RI "virtual QSize \fBminimumSizeHint\fP () const "
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.RI "const \fBQwtScaleDraw\fP * \fBscaleDraw\fP () const "
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.RI "\fBScalePos\fP \fBscalePosition\fP () const "
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.RI "void \fBsetBgStyle\fP (\fBBGSTYLE\fP)"
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.RI "void \fBsetBorderWidth\fP (int bw)"
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.RI "void \fBsetMargins\fP (int x, int y)"
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.RI "virtual void \fBsetOrientation\fP (Qt::Orientation)"
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.RI "void \fBsetScaleDraw\fP (\fBQwtScaleDraw\fP *)"
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.RI "void \fBsetScalePosition\fP (\fBScalePos\fP s)"
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.RI "void \fBsetThumbLength\fP (int l)"
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.RI "void \fBsetThumbWidth\fP (int w)"
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.RI "virtual QSize \fBsizeHint\fP () const "
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.RI "int \fBthumbLength\fP () const "
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.RI "int \fBthumbWidth\fP () const "
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.SS "Protected Member Functions"

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.RI "void \fBdraw\fP (QPainter *p, const QRect &update_rect)"
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.RI "virtual void \fBdrawSlider\fP (QPainter *p, const QRect &r)"
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.RI "virtual void \fBdrawThumb\fP (QPainter *p, const QRect &, int pos)"
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.RI "virtual void \fBfontChange\fP (const QFont &oldFont)"
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.RI "virtual void \fBgetScrollMode\fP (const QPoint &p, int &scrollMode, int &direction)"
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.RI "virtual double \fBgetValue\fP (const QPoint &p)"
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.RI "void \fBlayoutSlider\fP (bool update=true)"
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.RI "virtual void \fBpaintEvent\fP (QPaintEvent *e)"
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.RI "virtual void \fBrangeChange\fP ()"
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.RI "virtual void \fBresizeEvent\fP (QResizeEvent *e)"
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.RI "virtual void \fBscaleChange\fP ()"
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.RI "\fBQwtScaleDraw\fP * \fBscaleDraw\fP ()"
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.RI "virtual void \fBvalueChange\fP ()"
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.RI "int \fBxyPosition\fP (double v) const "
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.SS "Additional Inherited Members"
.SH "Detailed Description"
.PP 
The Slider Widget\&. 

\fBQwtSlider\fP is a slider widget which operates on an interval of type double\&. \fBQwtSlider\fP supports different layouts as well as a scale\&.
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\fBSee also:\fP
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\fBQwtAbstractSlider\fP and \fBQwtAbstractScale\fP for the descriptions of the inherited members\&. 
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.SH "Member Enumeration Documentation"
.PP 
.SS "enum \fBQwtSlider::BGSTYLE\fP"
Background style\&. 
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\fBSee also:\fP
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\fBQwtSlider()\fP 
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.SS "enum \fBQwtSlider::ScalePos\fP"
Scale position\&. \fBQwtSlider\fP tries to enforce valid combinations of its orientation and scale position:
.IP "\(bu" 2
Qt::Horizonal combines with NoScale, TopScale and BottomScale
.IP "\(bu" 2
Qt::Vertical combines with NoScale, LeftScale and RightScale
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\fBSee also:\fP
.RS 4
\fBQwtSlider()\fP 
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.SH "Constructor & Destructor Documentation"
.PP 
.SS "QwtSlider::QwtSlider (QWidget *parent, Qt::Orientationorientation = \fCQt::Horizontal\fP, \fBScalePos\fPscalePos = \fCNoScale\fP, \fBBGSTYLE\fPbgStyle = \fCBgTrough\fP)\fC [explicit]\fP"

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Constructor\&. \fBParameters:\fP
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\fIparent\fP parent widget 
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\fIorientation\fP Orientation of the slider\&. Can be Qt::Horizontal or Qt::Vertical\&. Defaults to Qt::Horizontal\&. 
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\fIscalePos\fP Position of the scale\&. Defaults to QwtSlider::NoScale\&. 
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\fIbgStyle\fP Background style\&. QwtSlider::BgTrough draws the slider button in a trough, QwtSlider::BgSlot draws a slot underneath the button\&. An or-combination of both may also be used\&. The default is QwtSlider::BgTrough\&.
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\fBQwtSlider\fP enforces valid combinations of its orientation and scale position\&. If the combination is invalid, the scale position will be set to NoScale\&. Valid combinations are:
.IP "\(bu" 2
Qt::Horizonal with NoScale, TopScale, or BottomScale;
.IP "\(bu" 2
Qt::Vertical with NoScale, LeftScale, or RightScale\&. 
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.SH "Member Function Documentation"
.PP 
.SS "\fBQwtSlider::BGSTYLE\fP QwtSlider::bgStyle () const"
\fBReturns:\fP
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the background style\&. 
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.SS "int QwtSlider::borderWidth () const"
\fBReturns:\fP
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the border width\&. 
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.SS "void QwtSlider::drawSlider (QPainter *painter, const QRect &r)\fC [protected]\fP, \fC [virtual]\fP"
Draw the slider into the specified rectangle\&.
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\fBParameters:\fP
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\fIpainter\fP Painter 
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\fIr\fP Rectangle 
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.SS "void QwtSlider::drawThumb (QPainter *painter, const QRect &sliderRect, intpos)\fC [protected]\fP, \fC [virtual]\fP"
Draw the thumb at a position
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\fBParameters:\fP
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\fIpainter\fP Painter 
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\fIsliderRect\fP Bounding rectangle of the slider 
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\fIpos\fP Position of the slider thumb 
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.SS "void QwtSlider::getScrollMode (const QPoint &p, int &scrollMode, int &direction)\fC [protected]\fP, \fC [virtual]\fP"

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Determine scrolling mode and direction\&. \fBParameters:\fP
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\fIp\fP point 
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\fIscrollMode\fP Scrolling mode 
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\fIdirection\fP Direction 
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Implements \fBQwtAbstractSlider\fP\&.
.SS "double QwtSlider::getValue (const QPoint &pos)\fC [protected]\fP, \fC [virtual]\fP"
Determine the value corresponding to a specified mouse location\&. 
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\fBParameters:\fP
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\fIpos\fP Mouse position 
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Implements \fBQwtAbstractSlider\fP\&.
.SS "void QwtSlider::layoutSlider (boolupdate_geometry = \fCtrue\fP)\fC [protected]\fP"
Recalculate the slider's geometry and layout based on the current rect and fonts\&. 
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\fBParameters:\fP
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\fIupdate_geometry\fP notify the layout system and call update to redraw the scale 
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.SS "QSize QwtSlider::minimumSizeHint () const\fC [virtual]\fP"

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Return a minimum size hint\&. \fBWarning:\fP
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The return value of \fBQwtSlider::minimumSizeHint()\fP depends on the font and the scale\&. 
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.SS "void QwtSlider::paintEvent (QPaintEvent *event)\fC [protected]\fP, \fC [virtual]\fP"
Qt paint event 
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\fBParameters:\fP
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\fIevent\fP Paint event 
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.SS "const \fBQwtScaleDraw\fP * QwtSlider::scaleDraw () const"
\fBReturns:\fP
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the scale draw of the slider 
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\fBSee also:\fP
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\fBsetScaleDraw()\fP 
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.SS "\fBQwtScaleDraw\fP * QwtSlider::scaleDraw ()\fC [protected]\fP"
\fBReturns:\fP
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the scale draw of the slider 
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\fBSee also:\fP
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\fBsetScaleDraw()\fP 
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.SS "void QwtSlider::setBgStyle (\fBBGSTYLE\fPst)"
Set the background style\&. 
.SS "void QwtSlider::setBorderWidth (intbd)"

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Change the slider's border width\&. \fBParameters:\fP
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\fIbd\fP border width 
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.SS "void QwtSlider::setMargins (intxMargin, intyMargin)"

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Set distances between the widget's border and internals\&. \fBParameters:\fP
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\fIxMargin\fP Horizontal margin 
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\fIyMargin\fP Vertical margin 
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.SS "void QwtSlider::setOrientation (Qt::Orientationo)\fC [virtual]\fP"

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Set the orientation\&. \fBParameters:\fP
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\fIo\fP Orientation\&. Allowed values are Qt::Horizontal and Qt::Vertical\&.
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If the new orientation and the old scale position are an invalid combination, the scale position will be set to QwtSlider::NoScale\&. 
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\fBSee also:\fP
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\fBQwtAbstractSlider::orientation()\fP 
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Reimplemented from \fBQwtAbstractSlider\fP\&.
.SS "void QwtSlider::setScaleDraw (\fBQwtScaleDraw\fP *scaleDraw)"

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Set a scale draw\&. For changing the labels of the scales, it is necessary to derive from \fBQwtScaleDraw\fP and overload \fBQwtScaleDraw::label()\fP\&.
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\fBParameters:\fP
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\fIscaleDraw\fP ScaleDraw object, that has to be created with new and will be deleted in ~QwtSlider or the next call of \fBsetScaleDraw()\fP\&. 
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.SS "void QwtSlider::setScalePosition (\fBScalePos\fPs)"

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Change the scale position (and slider orientation)\&. \fBParameters:\fP
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\fIs\fP Position of the scale\&.
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A valid combination of scale position and orientation is enforced:
.IP "\(bu" 2
if the new scale position is Left or Right, the scale orientation will become Qt::Vertical;
.IP "\(bu" 2
if the new scale position is Bottom or Top the scale orientation will become Qt::Horizontal;
.IP "\(bu" 2
if the new scale position is QwtSlider::NoScale, the scale orientation will not change\&. 
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.SS "void QwtSlider::setThumbLength (intthumbLength)"

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Set the slider's thumb length\&. \fBParameters:\fP
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\fIthumbLength\fP new length 
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.SS "void QwtSlider::setThumbWidth (intw)"

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Change the width of the thumb\&. \fBParameters:\fP
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\fIw\fP new width 
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.SS "QSize QwtSlider::sizeHint () const\fC [virtual]\fP"
\fBReturns:\fP
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\fBQwtSlider::minimumSizeHint()\fP 
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.SS "int QwtSlider::thumbLength () const"
\fBReturns:\fP
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the thumb length\&. 
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.SS "int QwtSlider::thumbWidth () const"
\fBReturns:\fP
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the thumb width\&. 
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.SS "int QwtSlider::xyPosition (doublevalue) const\fC [protected]\fP"
Find the x/y position for a given value v 
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\fBParameters:\fP
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\fIvalue\fP Value 
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.SH "Author"
.PP 
Generated automatically by Doxygen for Qwt User's Guide from the source code\&.