qwtslider.3

linux下qt的第三方的一个类

.TH "QwtSlider" 3 "16 Nov 2004" "Version 4.2.0" "Qwt User's Guide" \" -*- nroff -*-
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.SH NAME
QwtSlider \- 
.SH SYNOPSIS
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.PP
Inherits \fBQwtSliderBase\fP, and \fBQwtScaleIf\fP.
.PP
.SH "Detailed Description"
.PP 
The Slider Widget. 

QwtSlider is a slider widget which operates on an interval of type double. QwtSlider supports different layouts as well as a scale. 
.PP
\fBSee also:\fP
.RS 4
\fBQwtSliderBase\fP and \fBQwtScaleIf\fP for the descriptions of the inherited members. 
.RE
.PP

.PP
Definition at line 29 of file qwt_slider.h.
.SS "Public Types"

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.RI "enum \fBScalePos\fP { \fBNone\fP, \fBLeft\fP, \fBRight\fP, \fBTop\fP, \fBBottom\fP }"
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.RI "enum \fBBGSTYLE\fP { \fBBgTrough\fP =  0x1, \fBBgSlot\fP =  0x2, \fBBgBoth\fP =  BgTrough | BgSlot }"
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.SS "Public Member Functions"

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.RI "\fBQwtSlider\fP (QWidget *parent, const char *name=0, Qt::Orientation=Qt::Horizontal, \fBScalePos\fP=None, \fBBGSTYLE\fP bgStyle=BgTrough)"
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.RI "virtual void \fBsetOrientation\fP (Qt::Orientation)"
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.RI "void \fBsetBgStyle\fP (\fBBGSTYLE\fP st)"
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.RI "\fBBGSTYLE\fP \fBbgStyle\fP () const"
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.RI "void \fBsetScalePos\fP (\fBScalePos\fP s)"
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.RI "\fBScalePos\fP \fBscalePos\fP () const"
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.RI "void \fBsetScalePosition\fP (\fBScalePos\fP s)"
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.RI "\fBScalePos\fP \fBscalePosition\fP () const"
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.RI "int \fBthumbLength\fP () const"
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.RI "int \fBthumbWidth\fP () const"
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.RI "int \fBborderWidth\fP () const"
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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 "void \fBsetBorderWidth\fP (int bw)"
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.RI "void \fBsetMargins\fP (int x, int y)"
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.RI "virtual QSize \fBsizeHint\fP () const"
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.RI "virtual QSize \fBminimumSizeHint\fP () const"
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.RI "virtual QSizePolicy \fBsizePolicy\fP () const"
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.SS "Protected Member Functions"

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.RI "virtual double \fBgetValue\fP (const QPoint &p)"
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.RI "virtual void \fBgetScrollMode\fP (const QPoint &p, int &scrollMode, int &direction)"
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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 \fBresizeEvent\fP (QResizeEvent *e)"
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.RI "virtual void \fBpaintEvent\fP (QPaintEvent *e)"
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.RI "virtual void \fBvalueChange\fP ()"
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.RI "virtual void \fBrangeChange\fP ()"
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.RI "virtual void \fBscaleChange\fP ()"
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.RI "virtual void \fBfontChange\fP (const QFont &oldFont)"
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.RI "void \fBlayoutSlider\fP (bool update=TRUE)"
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.RI "int \fBxyPosition\fP (double v) const"
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.SH "Member Enumeration Documentation"
.PP 
.SS "enum \fBQwtSlider::BGSTYLE\fP"
.PP
Background style. 
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\fBSee also:\fP
.RS 4
\fBQwtSlider::QwtSlider\fP 
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Definition at line 57 of file qwt_slider.h.
.SS "enum \fBQwtSlider::ScalePos\fP"
.PP
Scale position. QwtSlider tries to enforce valid combinations of its orientation and scale position:
.IP "\(bu" 2
Qt::Horizonal combines with None, Top and Bottom
.IP "\(bu" 2
Qt::Vertical combines with None, Left and Right
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\fBSee also:\fP
.RS 4
\fBQwtSlider::QwtSlider\fP 
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Definition at line 51 of file qwt_slider.h.
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Referenced by scalePosition().
.SH "Constructor & Destructor Documentation"
.PP 
.SS "QwtSlider::QwtSlider (QWidget * parent, const char * name = \fC0\fP, Qt::Orientation orient = \fCQt::Horizontal\fP, \fBScalePos\fP scalePos = \fCNone\fP, \fBBGSTYLE\fP bgStyle = \fCBgTrough\fP)"
.PP
Constructor. 
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\fBParameters:\fP
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\fIparent\fP parent widget 
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\fIname\fP The Widget's name. Default = 0. 
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\fIorient\fP Orientation of the slider. Can be Qt::Horizontal or Qt::Vertical. Defaults to Horizontal. 
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\fIscalePos\fP Position of the scale. Can be QwtSlider::None, QwtSlider::Left, QwtSlider::Right, QwtSlider::Top, or QwtSlider::Bottom. Defaults to QwtSlider::None. 
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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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QwtSlider enforces valid combinations of its orientation and scale position. If the combination is invalid, the scale position will be set to None. Valid combinations are:
.IP "\(bu" 2
Qt::Horizonal with None, Top, or Bottom;
.IP "\(bu" 2
Qt::Vertical with None, Left, or Right. 
.PP
Definition at line 40 of file qwt_slider.cpp.
.PP
References QwtSliderBase::orientation(), QwtScaleIf::scaleDraw(), and QwtScaleDraw::setGeometry().
.SH "Member Function Documentation"
.PP 
.SS "\fBBGSTYLE\fP QwtSlider::bgStyle () const"
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\fBReturns:\fP
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the background style. 
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Definition at line 72 of file qwt_slider.h.
.SS "int QwtSlider::borderWidth () const"
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\fBReturns:\fP
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the border width. 
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Definition at line 97 of file qwt_slider.h.
.SS "void QwtSlider::draw (QPainter * p, const QRect & update_rect)\fC [protected]\fP"
.PP
Draw the QwtSlider. 
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Definition at line 402 of file qwt_slider.cpp.
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References QwtScaleDraw::draw(), drawSlider(), and QwtScaleIf::scaleDraw().
.PP
Referenced by paintEvent().
.SS "void QwtSlider::drawSlider (QPainter * p, const QRect & r)\fC [protected, virtual]\fP"
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Draw the slider into the specified rectangle. 
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Definition at line 215 of file qwt_slider.cpp.
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References drawThumb(), QwtSliderBase::isValid(), QwtSliderBase::orientation(), QwtDblRange::value(), and xyPosition().
.PP
Referenced by draw().
.SS "void QwtSlider::drawThumb (QPainter * p, const QRect &, int pos)\fC [protected, virtual]\fP"
.PP
Draw the thumb at a position. 
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Definition at line 270 of file qwt_slider.cpp.
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References QwtSliderBase::orientation().
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Referenced by drawSlider().
.SS "void QwtSlider::fontChange (const QFont & oldFont)\fC [protected, virtual]\fP"
.PP
Notify change in font. 
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Definition at line 208 of file qwt_slider.cpp.
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References layoutSlider().
.SS "void QwtSlider::getScrollMode (const QPoint & p, int & scrollMode, int & direction)\fC [protected, virtual]\fP"
.PP
Determine scrolling mode and direction. 
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\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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.PP

.PP
Implements \fBQwtSliderBase\fP.
.PP
Definition at line 363 of file qwt_slider.cpp.
.PP
References QwtDiMap::i1(), QwtDiMap::i2(), QwtSliderBase::orientation(), QwtScaleIf::scaleDraw(), QwtDblRange::value(), and xyPosition().
.SS "double QwtSlider::getValue (const QPoint & p)\fC [protected, virtual]\fP"
.PP
Determine the value corresponding to a specified mouse location. 
.PP
Implements \fBQwtSliderBase\fP.
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Definition at line 326 of file qwt_slider.cpp.
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References QwtDiMap::d1(), QwtDiMap::d2(), QwtDiMap::i1(), QwtDiMap::i2(), QwtDiMap::invTransform(), QwtDblRange::maxValue(), QwtDblRange::minValue(), QwtSliderBase::orientation(), and QwtScaleIf::scaleDraw().
.SS "void QwtSlider::layoutSlider (bool update_geometry = \fCTRUE\fP)\fC [protected]\fP"
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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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Definition at line 433 of file qwt_slider.cpp.
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References QwtScaleDraw::minBorderDist(), QwtSliderBase::orientation(), QwtScaleIf::scaleDraw(), QwtScaleDraw::setGeometry(), and QwtDiMap::setIntRange().
.PP
Referenced by fontChange(), rangeChange(), resizeEvent(), scaleChange(), setBorderWidth(), setMargins(), setOrientation(), setScalePosition(), setThumbLength(), and setThumbWidth().
.SS "QSize QwtSlider::minimumSizeHint () const\fC [virtual]\fP"
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Return a minimum size hint. 
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\fBWarning:\fP
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The return value of \fBQwtSlider::minimumSizeHint()\fP depends on the font and the scale. 
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Definition at line 632 of file qwt_slider.cpp.
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References QwtScaleDraw::minBorderDist(), QwtScaleDraw::minHeight(), QwtScaleDraw::minWidth(), QwtSliderBase::orientation(), and QwtScaleIf::scaleDraw().
.PP
Referenced by sizeHint().
.SS "void QwtSlider::paintEvent (QPaintEvent * e)\fC [protected, virtual]\fP"
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Qt paint event. 
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Definition at line 391 of file qwt_slider.cpp.
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References draw(), and QwtPaintBuffer::painter().
.SS "void QwtSlider::rangeChange ()\fC [protected, virtual]\fP"
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Notify change of range. 
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Reimplemented from \fBQwtDblRange\fP.
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Definition at line 566 of file qwt_slider.cpp.
.PP
References QwtScaleIf::hasUserScale(), layoutSlider(), QwtDblRange::maxValue(), QwtDblRange::minValue(), QwtDblRange::rangeChange(), QwtScaleIf::scaleDraw(), QwtScaleIf::scaleMaxMajor(), QwtScaleIf::scaleMaxMinor(), and QwtScaleDraw::setScale().
.SS "void QwtSlider::resizeEvent (QResizeEvent * e)\fC [protected, virtual]\fP"
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Qt resize event. 
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Definition at line 422 of file qwt_slider.cpp.
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References layoutSlider().
.SS "void QwtSlider::scaleChange ()\fC [protected, virtual]\fP"
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Notify changed scale. 
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Implements \fBQwtScaleIf\fP.
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Definition at line 194 of file qwt_slider.cpp.
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References QwtScaleIf::hasUserScale(), layoutSlider(), QwtDblRange::maxValue(), QwtDblRange::minValue(), QwtScaleIf::scaleDraw(), QwtScaleIf::scaleMaxMajor(), QwtScaleIf::scaleMaxMinor(), and QwtScaleDraw::setScale().
.SS "\fBScalePos\fP QwtSlider::scalePos () const"
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Deprecated. Use \fBQwtSlider::scalePosition\fP. Definition at line 81 of file qwt_slider.h.
.SS "\fBQwtSlider::ScalePos\fP QwtSlider::scalePosition () const"
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Return the scale position. 
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Definition at line 139 of file qwt_slider.cpp.
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References ScalePos.
.SS "void QwtSlider::setBgStyle (\fBBGSTYLE\fP st)"
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Set the background style. Definition at line 68 of file qwt_slider.h.
.SS "void QwtSlider::setBorderWidth (int bd)"
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Change the slider's border width. 
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\fBParameters:\fP
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\fIbd\fP border width 
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Definition at line 148 of file qwt_slider.cpp.
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References layoutSlider().
.SS "void QwtSlider::setMargins (int xMargin, int yMargin)"
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Set distances between the widget's border and internals. 
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\fBParameters:\fP
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\fIxMargin\fP Horizontal margin 
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\fIyMargin\fP Vertical margin 
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Definition at line 584 of file qwt_slider.cpp.
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References layoutSlider().
.SS "void QwtSlider::setOrientation (Qt::Orientation o)\fC [virtual]\fP"
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Set the orientation. 
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\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 None. 
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\fBSee also:\fP
.RS 4
\fBQwtSliderBase::orientation()\fP 
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Definition at line 99 of file qwt_slider.cpp.
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References layoutSlider(), and QwtSliderBase::setOrientation().
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Referenced by setScalePosition().
.SS "void QwtSlider::setScalePos (\fBScalePos\fP s)"
.PP
Deprecated. Use \fBQwtSlider::setScalePosition\fP. Definition at line 77 of file qwt_slider.h.
.SS "void QwtSlider::setScalePosition (\fBScalePos\fP s)"
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Change the scale position (and slider orientation). 
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\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 None, the scale orientation will not change. 
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Definition at line 127 of file qwt_slider.cpp.
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References layoutSlider(), and setOrientation().
.SS "void QwtSlider::setThumbLength (int thumbLength)"
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Set the slider's thumb length. 
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\fBParameters:\fP
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\fIthumbLength\fP new length 
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Definition at line 164 of file qwt_slider.cpp.
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References layoutSlider().
.SS "void QwtSlider::setThumbWidth (int w)"
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Change the width of the thumb. 
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\fBParameters:\fP
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\fIw\fP new width 
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Definition at line 180 of file qwt_slider.cpp.
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References layoutSlider().
.SS "QSize QwtSlider::sizeHint () const\fC [virtual]\fP"
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\fBReturns:\fP
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\fBQwtSlider::minimumSizeHint()\fP 
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Definition at line 622 of file qwt_slider.cpp.
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References minimumSizeHint().
.SS "QSizePolicy QwtSlider::sizePolicy () const\fC [virtual]\fP"
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\fBReturns:\fP
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MinimumExpanding/Fixed for a horizontal orientation; Fixed/MinimumExpanding for a vertical orientation. 
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Definition at line 603 of file qwt_slider.cpp.
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References QwtSliderBase::orientation().
.SS "int QwtSlider::thumbLength () const"
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\fBReturns:\fP
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the thumb length. 
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Definition at line 89 of file qwt_slider.h.
.SS "int QwtSlider::thumbWidth () const"
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\fBReturns:\fP
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the thumb width. 
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Definition at line 93 of file qwt_slider.h.
.SS "void QwtSlider::valueChange ()\fC [protected, virtual]\fP"
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Notify change of value. 
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Reimplemented from \fBQwtSliderBase\fP.
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Definition at line 558 of file qwt_slider.cpp.
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References QwtSliderBase::valueChange().
.SS "int QwtSlider::xyPosition (double v) const\fC [protected]\fP"
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Find the x/y position for a given value v. 
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Definition at line 298 of file qwt_slider.cpp.
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References QwtDiMap::d1(), QwtDiMap::d2(), QwtDiMap::i1(), QwtDiMap::i2(), QwtDblRange::maxValue(), QwtDblRange::minValue(), QwtSliderBase::orientation(), QwtScaleIf::scaleDraw(), and QwtDiMap::transform().
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Referenced by drawSlider(), and getScrollMode().

.SH "Author"
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