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QwtScaleDiv

NAME

QwtScaleDiv -

SYNOPSIS

Detailed Description

A class representing a scale division.

A scale division consists of its limits and 3 list of tick values qualified as major, medium and minor ticks.

In most cases scale divisions are calculated by a QwtScaleEngine.

See also:

QwtScaleEngine::subDivideInto, QwtScaleEngine::subDivide

Definition at line 30 of file qwt_scale_div.h.

Public Types

enum TickType { NoTick = -1, MinorTick, MediumTick, MajorTick, NTickTypes }

Public Member Functions

QwtScaleDiv ()

QwtScaleDiv (const QwtDoubleInterval &, QwtValueList[NTickTypes])

QwtScaleDiv (double lBound, double rBound, QwtValueList[NTickTypes])

int operator== (const QwtScaleDiv &s) const

int operator!= (const QwtScaleDiv &s) const

void setInterval (double lBound, double rBound)

void setInterval (const QwtDoubleInterval &)

QwtDoubleInterval interval () const

double lBound () const

double hBound () const

double range () const

bool contains (double v) const

void setTicks (int type, const QwtValueList &)

const QwtValueList & ticks (int type) const

void invalidate ()

bool isValid () const

void invert ()

Constructor & Destructor Documentation

QwtScaleDiv::QwtScaleDiv () [explicit]

Construct an invalid QwtScaleDiv instance.

Definition at line 15 of file qwt_scale_div.cpp.

QwtScaleDiv::QwtScaleDiv (const QwtDoubleInterval & interval, QwtValueList ticks[NTickTypes]) [explicit]

Construct QwtScaleDiv instance.

Parameters:

interval Interval
ticks List of major, medium and minor ticks

Definition at line 28 of file qwt_scale_div.cpp.

References ticks().

QwtScaleDiv::QwtScaleDiv (double lBound, double hBound, QwtValueList ticks[NTickTypes]) [explicit]

Construct QwtScaleDiv instance.

Parameters:

lBound First interval limit
hBound Second interval limit
ticks List of major, medium and minor ticks

Definition at line 46 of file qwt_scale_div.cpp.

References ticks().

Member Function Documentation

int QwtScaleDiv::operator== (const QwtScaleDiv & other) const

Equality operator.

Returns:

true if this instance is equal to other

Definition at line 70 of file qwt_scale_div.cpp.

References d_hBound, d_isValid, d_lBound, and d_ticks.

int QwtScaleDiv::operator!= (const QwtScaleDiv & s) const

Inequality.

Returns:

true if this instance is not equal to s

Definition at line 92 of file qwt_scale_div.cpp.

void QwtScaleDiv::setInterval (double lBound, double hBound) [inline]

Change the interval left bound right bound

Definition at line 84 of file qwt_scale_div.h.

Referenced by setInterval().

void QwtScaleDiv::setInterval (const QwtDoubleInterval & interval)

Change the interval Interval

Definition at line 61 of file qwt_scale_div.cpp.

References interval(), QwtDoubleInterval::maxValue(), QwtDoubleInterval::minValue(), and setInterval().

QwtDoubleInterval QwtScaleDiv::interval () const [inline]

Returns:

lBound -> hBound

Definition at line 93 of file qwt_scale_div.h.

Referenced by setInterval().

double QwtScaleDiv::lBound () const [inline]

Returns:

left bound

See also:

QwtScaleDiv::hBound

Definition at line 102 of file qwt_scale_div.h.

Referenced by QwtPlot::canvasMap(), QwtPlotPanner::moveCanvas(), QwtPlot::print(), QwtPlotZoomer::rescale(), QwtPlotMagnifier::rescale(), QwtPlotPicker::scaleRect(), and QwtAbstractScaleDraw::setScaleDiv().

double QwtScaleDiv::hBound () const [inline]

Returns:

right bound

See also:

QwtScaleDiv::lBound

Definition at line 111 of file qwt_scale_div.h.

Referenced by QwtPlot::canvasMap(), QwtPlotPanner::moveCanvas(), QwtPlot::print(), QwtPlotZoomer::rescale(), and QwtAbstractScaleDraw::setScaleDiv().

double QwtScaleDiv::range () const [inline]

Returns:

hBound() - lBound()

Definition at line 119 of file qwt_scale_div.h.

Referenced by QwtPlotPicker::scaleRect().

void QwtScaleDiv::setTicks (int type, const QwtValueList & ticks)

Assign ticks

Parameters:

type MinorTick, MediumTick or MajorTick
ticks Values of the tick positions

Definition at line 149 of file qwt_scale_div.cpp.

const QwtValueList & QwtScaleDiv::ticks (int type) const

Return a list of ticks

Parameters:

type MinorTick, MediumTick or MajorTick

Definition at line 160 of file qwt_scale_div.cpp.

Referenced by QwtRoundScaleDraw::extent(), QwtScaleDraw::getBorderDistHint(), invert(), QwtScaleDraw::maxLabelHeight(), QwtScaleDraw::maxLabelWidth(), QwtScaleDraw::minLabelDist(), QwtScaleDraw::minLength(), QwtScaleDiv(), and QwtPlot::sizeHint().

void QwtScaleDiv::invalidate ()

Invalidate the scale division.

Definition at line 98 of file qwt_scale_div.cpp.

bool QwtScaleDiv::isValid () const

Check if the scale division is valid.

Definition at line 110 of file qwt_scale_div.cpp.

void QwtScaleDiv::invert ()

Invert the scale divison.

Definition at line 127 of file qwt_scale_div.cpp.

References ticks().

Referenced by QwtLog10ScaleEngine::divideScale().

Author

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