qwtscaledraw.3

linux下qt的第三方的一个类

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\fBParameters:\fP
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\fIfm\fP QFontMetrics 
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\fBReturns:\fP
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the maximum width of a label 
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Definition at line 736 of file qwt_scldraw.cpp.
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References labelBoundingRect(), QwtScaleDiv::logScale(), QwtScaleDiv::majCnt(), QwtScaleDiv::majMark(), QwtScaleDiv::majStep(), and maxWidth().
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Referenced by maxWidth(), minHeight(), and minWidth().
.SS "int QwtScaleDraw::maxWidth (const QPen & pen, const QFontMetrics & fm) const"
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\fBParameters:\fP
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\fIpen\fP pen 
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\fIfm\fP font metrics 
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\fBReturns:\fP
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the maximum width of the scale 
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Definition at line 487 of file qwt_scldraw.cpp.
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References maxLabelWidth().
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Referenced by QwtScale::layoutScale(), maxLabelWidth(), and QwtDial::scaleContentsRect().
.SS "void QwtScaleDraw::minBorderDist (const QFontMetrics & fm, int & start, int & end) const"
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Determine the minimum border distance. 
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This member function returns the minimum space needed to draw the mark labels at the scale's endpoints.
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\fBParameters:\fP
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\fIfm\fP QFontMetrics 
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\fIstart\fP start border distance 
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\fIend\fP end border distance 
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Definition at line 839 of file qwt_scldraw.cpp.
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References labelBoundingRect(), QwtScaleDiv::majCnt(), and QwtScaleDiv::majMark().
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Referenced by QwtSlider::layoutSlider(), QwtThermo::layoutThermo(), QwtScale::minBorderDist(), minHeight(), QwtSlider::minimumSizeHint(), and minWidth().
.SS "int QwtScaleDraw::minHeight (const QPen & pen, const QFontMetrics & fm) const"
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\fBParameters:\fP
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\fIpen\fP pen 
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\fIfm\fP font metrics 
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\fBReturns:\fP
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the minimum height required to draw the scale including the minimum border distance 
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Definition at line 960 of file qwt_scldraw.cpp.
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References QwtScaleDiv::majCnt(), maxLabelHeight(), maxLabelWidth(), minBorderDist(), QwtScaleDiv::minCnt(), and minLabelDist().
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Referenced by QwtScale::dimForLength(), QwtThermo::minimumSizeHint(), QwtSlider::minimumSizeHint(), QwtScale::minimumSizeHint(), QwtKnob::minimumSizeHint(), QwtDial::minimumSizeHint(), and QwtDial::sizeHint().
.SS "int QwtScaleDraw::minLabelDist (const QFontMetrics & fm) const"
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Determine the minimum distance between two labels, that is necessairy that the texts don't overlap.
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\fBParameters:\fP
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\fIfm\fP QFontMetrics 
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\fBReturns:\fP
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the maximum width of a label 
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\fBWarning:\fP
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Not implemented for round scales 
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Definition at line 880 of file qwt_scldraw.cpp.
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References labelBoundingRect(), QwtScaleDiv::majCnt(), and QwtScaleDiv::majMark().
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Referenced by minHeight(), and minWidth().
.SS "int QwtScaleDraw::minWidth (const QPen & pen, const QFontMetrics & fm) const"
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\fBParameters:\fP
.RS 4
\fIpen\fP pen 
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\fIfm\fP font metrics 
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\fBReturns:\fP
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the minimum width required to draw the scale including the minimum border distance 
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Definition at line 1000 of file qwt_scldraw.cpp.
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References QwtScaleDiv::majCnt(), maxLabelWidth(), minBorderDist(), QwtScaleDiv::minCnt(), and minLabelDist().
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Referenced by QwtScale::dimForLength(), QwtThermo::minimumSizeHint(), QwtSlider::minimumSizeHint(), and QwtScale::minimumSizeHint().
.SS "int QwtScaleDraw::options () const"
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\fBReturns:\fP
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scale draw options 
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Definition at line 65 of file qwt_scldraw.cpp.
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Referenced by draw(), and QwtDial::setScaleOptions().
.SS "\fBQwtScaleDraw::Orientation\fP QwtScaleDraw::orientation () const"
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Return scale orientation. 
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Definition at line 1082 of file qwt_scldraw.cpp.
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References Orientation.
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Referenced by QwtScale::dimForLength(), QwtScale::draw(), QwtScale::layoutScale(), QwtScale::minimumSizeHint(), QwtScale::position(), QwtThermo::sizePolicy(), and QwtScale::sizePolicy().
.SS "const \fBQwtScaleDiv\fP& QwtScaleDraw::scaleDiv () const"
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\fBReturns:\fP
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scale division 
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Definition at line 74 of file qwt_scldraw.h.
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Referenced by QwtThermo::setRange(), QwtScaleIf::setScale(), QwtScale::setScaleDiv(), QwtScaleIf::setScaleMaxMajor(), QwtScaleIf::setScaleMaxMinor(), and QwtPlot::sizeHint().
.SS "void QwtScaleDraw::setAngleRange (double angle1, double angle2)"
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Adjust the baseline circle segment for round scales. 
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The baseline will be drawn from min(angle1,angle2) to max(angle1, angle2). The settings have no effect if the scale orientation is not set to QwtScaleDraw::Round. The default setting is [ -135, 135 ]. An angle of 0 degrees corresponds to the 12 o'clock position, and positive angles count in a clockwise direction. 
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\fBParameters:\fP
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\fIangle1\fP 
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\fIangle2\fP boundaries of the angle interval in degrees. 
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\fBWarning:\fP
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.PD 0
.IP "\(bu" 2
The angle range is limited to [-360, 360] degrees. Angles exceeding this range will be clipped. 
.IP "\(bu" 2
For angles more than 359 degrees above or below min(angle1, angle2), scale marks will not be drawn. 
.IP "\(bu" 2
If you need a counterclockwise scale, use QwtScaleDiv::setRange 
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Definition at line 611 of file qwt_scldraw.cpp.
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References qwtLim(), and QwtDiMap::setIntRange().
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Referenced by QwtDial::drawScale(), and QwtKnob::setTotalAngle().
.SS "void QwtScaleDraw::setGeometry (int xorigin, int yorigin, int length, \fBOrientation\fP o)"
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Specify the geometry of the scale. 
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The parameters xorigin, yorigin and length have different meanings, dependent on the orientation: 
.IP "\fBQwtScaleDraw::Left \fP" 1c
The origin is the topmost point of the baseline. The baseline is a vertical line with the specified length. Scale marks and labels are drawn at the left of the baseline. 
.IP "\fBQwtScaleDraw::Right \fP" 1c
The origin is the topmost point of the baseline. The baseline is a vertical line with the specified length. Scale marks and labels are drawn at the right of the baseline. 
.IP "\fBQwtScaleDraw::Top \fP" 1c
The origin is the leftmost point of the baseline. The baseline is a horizontal line with the specified length. Scale marks and labels are drawn above the baseline. 
.IP "\fBQwtScaleDraw::Bottom \fP" 1c
The origin is the leftmost point of the baseline. The baseline is a horizontal line with the specified length. Scale marks and labels are drawn below the baseline. 
.IP "\fBQwtScaleDraw::Round \fP" 1c
The origin is the top left corner of the bounding rectangle of the baseline circle. The baseline is the segment of a circle with a diameter of the specified length. Scale marks and labels are drawn outside the baseline circle.
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\fBParameters:\fP
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\fIxorigin\fP x coordinate of the origin 
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\fIyorigin\fP y coordinate of the origin 
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\fIlength\fP length or diameter of the scale, excluding border distance 
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\fIo\fP The orientation 
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Definition at line 448 of file qwt_scldraw.cpp.
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References QwtDiMap::setIntRange().
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Referenced by QwtDial::drawScale(), QwtScale::layoutScale(), QwtSlider::layoutSlider(), QwtThermo::layoutThermo(), QwtPlot::printScale(), QwtDial::QwtDial(), QwtKnob::QwtKnob(), QwtScaleDraw(), QwtSlider::QwtSlider(), and QwtScale::setPosition().
.SS "void QwtScaleDraw::setLabelAlignment (int alignment)"
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Labels are aligned to the point ticklength + margin away from the backbone. The alignment is relative to the orientation of the label text. In case of an alignment of 0 the label will be aligned depending on the orientation of the scale:
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QwtScaleDraw::Top: Qt::AlignHCenter | Qt::AlignTop
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 QwtScaleDraw::Bottom: Qt::AlignHCenter | Qt::AlignBottom
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 QwtScaleDraw::Left: Qt::AlignLeft | Qt::AlignVCenter
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 QwtScaleDraw::Right: Qt::AlignRight | Qt::AlignVCenter
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Changing the alignment is often necessary for rotated labels.
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\fBParameters:\fP
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\fIalignment\fP Or'd Qt::AlignmentFlags <see qnamespace.h> 
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\fBWarning:\fP
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Alignment of labels is not implemented for round scales. 
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\fBSee also:\fP
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\fBQwtScaleDraw::setLabelRotation()\fP, \fBQwtScaleDraw::labelRotation()\fP, \fBQwtScaleDraw::labelAlignment()\fP 
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Definition at line 579 of file qwt_scldraw.cpp.
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Referenced by QwtScale::setLabelAlignment().
.SS "void QwtScaleDraw::setLabelFormat (char f, int prec, int fieldwidth = \fC0\fP)"
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Set the number format for the major scale labels. 
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Format character, precision and fieldwidth have the same meaning as for sprintf(). 
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\fBParameters:\fP
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\fIf\fP format character 'e', 'f', 'g' 
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\fIprec\fP 
.IP "\(bu" 2
for 'e', 'f': the number of digits after the radix character (point)
.IP "\(bu" 2
for 'g': the maximum number of significant digits 
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\fIfieldwidth\fP fieldwidth
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\fBNote:\fP
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precision and fieldwidth must be in the range 0, 1, .., 99. Invalid input is discarded.
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\fBSee also:\fP
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\fBlabelFormat()\fP 
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Definition at line 646 of file qwt_scldraw.cpp.
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Referenced by QwtScale::setLabelFormat().
.SS "void QwtScaleDraw::setLabelRotation (double rotation)"
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Rotate all labels.
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\fBParameters:\fP
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\fIrotation\fP Angle in degrees. When changing the label rotation, the label alignment might be adjusted too. 
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\fBSee also:\fP
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\fBsetLabelAlignment()\fP, \fBlabelRotation()\fP, \fBlabelAlignment()\fP. 
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\fBWarning:\fP
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Rotation of labels is not implemented for round scales. 
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Definition at line 546 of file qwt_scldraw.cpp.
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Referenced by QwtScale::setLabelRotation().
.SS "void QwtScaleDraw::setMargin (uint hMargin, uint vMargin)"
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Set the margins of the ticks
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\fBParameters:\fP
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\fIhMargin\fP Horizontal margin 
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\fIvMargin\fP Vertical margin 
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Definition at line 692 of file qwt_scldraw.cpp.
.SS "void QwtScaleDraw::setOptions (int opt)"
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Change the scale draw options. 
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Definition at line 57 of file qwt_scldraw.cpp.
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Referenced by QwtDial::setScaleOptions().
.SS "void QwtScaleDraw::setScale (double x1, double x2, int maxMajIntv, int maxMinIntv, double step = \fC0.0\fP, int logscale = \fC0\fP)"
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Adjust the range of the scale. 
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If step == 0.0, the step width is calculated automatically dependent on the maximal number of scale ticks. 
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\fBParameters:\fP
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\fIx1\fP Value at the left/low endpoint of the scale 
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\fIx2\fP Value at the right/high endpoint of the scale 
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\fImaxMajIntv\fP Max. number of major step intervals 
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\fImaxMinIntv\fP Max. number of minor step intervals 
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\fIstep\fP Step size (default : 0.0) 
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\fIlogscale\fP Logarithmic scale (default : 0) 
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Definition at line 82 of file qwt_scldraw.cpp.
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References QwtScaleDiv::hBound(), QwtScaleDiv::lBound(), QwtScaleDiv::logScale(), QwtScaleDiv::rebuild(), and QwtDiMap::setDblRange().
.SS "void QwtScaleDraw::setScale (const \fBQwtScaleDiv\fP & sd)"
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Change the scale division. 
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\fBParameters:\fP
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\fIsd\fP new scale division 
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Definition at line 94 of file qwt_scldraw.cpp.
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References QwtScaleDiv::hBound(), QwtScaleDiv::lBound(), QwtScaleDiv::logScale(), and QwtDiMap::setDblRange().
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Referenced by QwtScaleDraw(), QwtScaleIf::QwtScaleIf(), QwtSlider::rangeChange(), QwtSlider::scaleChange(), QwtThermo::setRange(), QwtScaleIf::setScale(), QwtScale::setScaleDiv(), QwtScaleIf::setScaleMaxMajor(), QwtScaleIf::setScaleMaxMinor(), and QwtDial::updateScale().
.SS "void QwtScaleDraw::setTickLength (unsigned int minLen, unsigned int medLen, unsigned int majLen)"
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Set the length of the ticks Definition at line 701 of file qwt_scldraw.cpp.
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Referenced by QwtDial::setScaleOptions(), and QwtDial::setScaleTicks().
.SS "void QwtScaleDraw::tickLength (unsigned int & minLen, unsigned int & medLen, unsigned int & majLen) const"
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Return the length of the ticks 
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\fBSee also:\fP
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\fBQwtScaleDraw::majTickLength()\fP 
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Definition at line 715 of file qwt_scldraw.cpp.
.SS "int QwtScaleDraw::x () const"
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Return x origin. 
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Definition at line 1064 of file qwt_scldraw.cpp.
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Referenced by labelPlacement(), labelWorldMatrix(), and QwtPlot::printScale().
.SS "int QwtScaleDraw::y () const"
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Return y origin. 
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Definition at line 1070 of file qwt_scldraw.cpp.
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Referenced by labelPlacement(), labelWorldMatrix(), and QwtPlot::printScale().

.SH "Author"
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