QwtLinearScaleEngine(3)

💅 NAME 💅

Okay bestie, this is the QwtLinearScaleEngine(3) page from the Library Functions Manual. It is literally a scale engine for linear scales. That's the whole assignment. 🎀

✨ SYNOPSIS ✨

#include <qwt_scale_engine.h>

It inherits from QwtScaleEngine.

It is inherited by QwtDateScaleEngine.

🌸 Public Member Functions 🌸

• Constructor — QwtLinearScaleEngine (uint base=10)
• Destructor — virtual ~QwtLinearScaleEngine () — Destructor.
• Auto-scale — virtual void autoScale (int maxNumSteps, double &x1, double &x2, double &stepSize) const override
• Divide scale — QwtScaleDiv divideScale (double x1, double x2, int maxMajorSteps, int maxMinorSteps, double stepSize=0.0) const override — Calculate a scale division for an interval.

🫶 Public Member Functions inherited from QwtScaleEngine 🫶

• Constructor — QwtScaleEngine (uint base=10)
• Destructor — virtual ~QwtScaleEngine () — Destructor.
• Set base — void setBase (uint base)
• Get base — uint base () const
• Set attribute — void setAttribute (Attribute, bool on=true)
• Test attribute — bool testAttribute (Attribute) const
• Set attributes — void setAttributes (Attributes)
• Get attributes — Attributes attributes () const
• Set reference — void setReference (double) — Specify a reference point.
• Get reference — double reference () const
• Set margins — void setMargins (double lower, double upper) — Specify margins at the scale's endpoints.
• Lower margin — double lowerMargin () const
• Upper margin — double upperMargin () const
• Set transformation — void setTransformation (QwtTransform *)
• Get transformation — QwtTransform * transformation () const

🧚 Protected Member Functions 🧚

• QwtInterval align (const QwtInterval &, double stepSize) const — Align an interval to a step size.
• void buildTicks (const QwtInterval &, double stepSize, int maxMinorSteps, QList< double > ticks[QwtScaleDiv::NTickTypes]) const — Calculate ticks for an interval.
• QList< double > buildMajorTicks (const QwtInterval &interval, double stepSize) const — Calculate major ticks for an interval.
• void buildMinorTicks (const QList< double > &majorTicks, int maxMinorSteps, double stepSize, QList< double > &minorTicks, QList< double > &mediumTicks) const — Calculate minor/medium ticks for major ticks.

💜 Protected Member Functions inherited from QwtScaleEngine 💜

• Contains — bool contains (const QwtInterval &, double value) const
• Strip — QList< double > strip (const QList< double > &, const QwtInterval &) const
• Divide interval — double divideInterval (double intervalSize, int numSteps) const
• Build interval — QwtInterval buildInterval (double value) const — Build an interval around a value.

🌈 Additional Inherited Members 🌈

Public types inherited from QwtScaleEngine:

enum Attribute { NoAttribute = 0x00, IncludeReference = 0x01, Symmetric
    = 0x02, Floating = 0x04, Inverted = 0x08 }
typedef QFlags< Attribute > Attributes

💖 Detailed Description 💖

A scale engine for linear scales. The step size will fit into the pattern $t 1,2,5 — and yes, the original page has a stray little ight floating up there, so we are keeping it because details are details. 🫡

Definition at line 151 of file qwt_scale_engine.h.

🎀 Constructor & Destructor Documentation 🎀

🍼 QwtLinearScaleEngine::QwtLinearScaleEngine

QwtLinearScaleEngine::QwtLinearScaleEngine (uint base = 10) [explicit]

Constructor, bestie.

Parameters

• base — Base of the scale engine.

See also: setBase()

Definition at line 511 of file qwt_scale_engine.cpp.

🫧 QwtLinearScaleEngine::~QwtLinearScaleEngine

QwtLinearScaleEngine::~QwtLinearScaleEngine () [virtual]

Destructor. She destroys. 💅

Definition at line 517 of file qwt_scale_engine.cpp.

🔥 Member Function Documentation 🔥

🧚 QwtLinearScaleEngine::align

QwtInterval QwtLinearScaleEngine::align (const QwtInterval & interval,
    double stepSize) const [protected]

Align an interval to a step size. The limits of an interval are aligned so both are integer multiples of the step size.

Parameters

• interval — Interval.
• stepSize — Step size.

Returns

• Aligned interval.

Definition at line 741 of file qwt_scale_engine.cpp.

🦋 QwtLinearScaleEngine::autoScale

void QwtLinearScaleEngine::autoScale (int maxNumSteps, double & x1, double &
    x2, double & stepSize) const [override],  [virtual]

Align and divide an interval.

Parameters

• maxNumSteps — Max. number of steps.
• x1 — First limit of the interval (In/Out).
• x2 — Second limit of the interval (In/Out).
• stepSize — Step size (Out).

See also: setAttribute()

Implements QwtScaleEngine.

Reimplemented in QwtDateScaleEngine.

Definition at line 531 of file qwt_scale_engine.cpp.

🌸 QwtLinearScaleEngine::buildMajorTicks

QList< double > QwtLinearScaleEngine::buildMajorTicks (const QwtInterval &
    interval, double stepSize) const [protected]

Calculate major ticks for an interval.

Parameters

• interval — Interval.
• stepSize — Step size.

Returns

• Calculated ticks.

Definition at line 664 of file qwt_scale_engine.cpp.

🦋 QwtLinearScaleEngine::buildMinorTicks

void QwtLinearScaleEngine::buildMinorTicks (const QList< double > &
    majorTicks, int maxMinorSteps, double stepSize, QList< double > &
    minorTicks, QList< double > & mediumTicks) const [protected]

Calculate minor/medium ticks for major ticks.

Parameters

• majorTicks — Major ticks.
• maxMinorSteps — Maximum number of minor steps.
• stepSize — Step size.
• minorTicks — Array to be filled with the calculated minor ticks.
• mediumTicks — Array to be filled with the calculated medium ticks.

Definition at line 692 of file qwt_scale_engine.cpp.

🧚 QwtLinearScaleEngine::buildTicks

void QwtLinearScaleEngine::buildTicks (const QwtInterval & interval, double
    stepSize, int maxMinorSteps, QList< double >
    ticks[QwtScaleDiv::NTickTypes]) const [protected]

Calculate ticks for an interval.

Parameters

• interval — Interval.
• stepSize — Step size.
• maxMinorSteps — Maximum number of minor steps.
• ticks — Arrays to be filled with the calculated ticks.

See also: buildMajorTicks(), buildMinorTicks

Definition at line 627 of file qwt_scale_engine.cpp.

👑 QwtLinearScaleEngine::divideScale

QwtScaleDiv QwtLinearScaleEngine::divideScale (double x1, double x2, int
    maxMajorSteps, int maxMinorSteps, double stepSize = 0.0) const
    [override],  [virtual]

Calculate a scale division for an interval.

Parameters

• x1 — First interval limit.
• x2 — Second interval limit.
• maxMajorSteps — Maximum for the number of major steps.
• maxMinorSteps — Maximum number of minor steps.
• stepSize — Step size. If stepSize == 0, the engine calculates one.

Returns

• Calculated scale division.

Implements QwtScaleEngine.

Reimplemented in QwtDateScaleEngine.

Definition at line 577 of file qwt_scale_engine.cpp.

🌟 Author 🌟

Generated automatically by Doxygen for Qwt User's Guide from the source code.

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That is the whole page, bestie — from the Qwt User's Guide, and there is no date on this footer, so we are not inventing one. Vibe check: passed. Periodt. 💅✨