61 lines
1.6 KiB
C
61 lines
1.6 KiB
C
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/******************************************************************************
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* QSkinny - Copyright (C) 2016 Uwe Rathmann
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* This file may be used under the terms of the QSkinny License, Version 1.0
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*****************************************************************************/
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#ifndef QSK_SCALE_ENGINE_H
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#define QSK_SCALE_ENGINE_H
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#include <QskGlobal.h>
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#include <qmetatype.h>
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class QskScaleTickmarks;
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class QskIntervalF;
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class QSK_EXPORT QskScaleEngine
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{
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Q_GADGET
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public:
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enum Attribute
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{
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Inverted = 1 << 0,
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Floating = 1 << 1
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};
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Q_ENUM( Attribute )
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Q_DECLARE_FLAGS( Attributes, Attribute )
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QskScaleEngine();
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~QskScaleEngine();
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void setAttribute( Attribute, bool on = true );
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bool testAttribute( Attribute ) const;
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void setAttributes( Attributes );
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Attributes attributes() const;
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QskScaleTickmarks divideScale(qreal x1, qreal x2,
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int maxMajorSteps, int maxMinorSteps, qreal stepSize = 0.0) const;
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void autoScale( int maxNumSteps, qreal &x1, qreal &x2, qreal &stepSize ) const;
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private:
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QskIntervalF align( const QskIntervalF&, qreal stepSize ) const;
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QVector<qreal> strip( const QVector<qreal>&, const QskIntervalF& ) const;
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QskScaleTickmarks buildTicks(
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const QskIntervalF&, qreal stepSize, int maxMinorSteps ) const;
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QVector<qreal> buildMajorTicks( const QskIntervalF&, qreal stepSize ) const;
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void buildMinorTicks( const QVector<qreal>& majorTicks,
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int maxMinorSteps, qreal stepSize, QVector<qreal>& minorTicks,
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QVector<qreal>& mediumTicks ) const;
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Attributes m_attributes;
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};
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#endif
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