mirror of
https://github.com/GoldenCheetah/GoldenCheetah.git
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65 lines
2.2 KiB
C++
65 lines
2.2 KiB
C++
/*
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* Copyright (c) 2006 Sean C. Rhea (srhea@srhea.net)
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc., 51
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* Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*
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* Qwt Widget Library
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* Copyright (C) 1997 Josef Wilgen
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* Copyright (C) 2002 Uwe Rathmann
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the Qwt License, Version 1.0
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*/
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#ifndef _GC_LogTimeScaleEngine_h
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#define _GC_LogTimeScaleEngine_h 1
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#include "qwt_scale_engine.h"
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class LogTimeScaleEngine : public QwtScaleEngine
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{
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public:
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virtual void autoScale(int maxSteps, double &x1, double &x2,
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double &stepSize) const;
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virtual QwtScaleDiv divideScale(double x1, double x2,
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int numMajorSteps, int numMinorSteps,
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double stepSize = 0.0) const;
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virtual QwtScaleTransformation *transformation() const;
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protected:
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QwtDoubleInterval log10(const QwtDoubleInterval&) const;
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QwtDoubleInterval pow10(const QwtDoubleInterval&) const;
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private:
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QwtDoubleInterval align(const QwtDoubleInterval&,
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double stepSize) const;
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void buildTicks(
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const QwtDoubleInterval &, double stepSize, int maxMinSteps,
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QwtValueList ticks[QwtScaleDiv::NTickTypes]) const;
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QwtValueList buildMinorTicks(
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const QwtValueList& majorTicks,
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int maxMinMark, double step) const;
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QwtValueList buildMajorTicks(
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const QwtDoubleInterval &interval, double stepSize) const;
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};
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#endif // _GC_LogTimeScaleEngine_h
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