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115 lines
3.9 KiB
C++
115 lines
3.9 KiB
C++
///////////////////////////////////////////////////////////////////////////////////
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// Copyright (C) 2012 maintech GmbH, Otto-Hahn-Str. 15, 97204 Hoechberg, Germany //
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// written by Christian Daniel //
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// Copyright (C) 2015-2022 Edouard Griffiths, F4EXB <f4exb06@gmail.com> //
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// //
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// This program is free software; you can redistribute it and/or modify //
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// it under the terms of the GNU General Public License as published by //
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// the Free Software Foundation as version 3 of the License, or //
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// (at your option) any later version. //
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// //
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// This program is distributed in the hope that it will be useful, //
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// but WITHOUT ANY WARRANTY; without even the implied warranty of //
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the //
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// GNU General Public License V3 for more details. //
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// //
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// You should have received a copy of the GNU General Public License //
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// along with this program. If not, see <http://www.gnu.org/licenses/>. //
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///////////////////////////////////////////////////////////////////////////////////
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#ifndef INCLUDE_SCALEENGINE_H
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#define INCLUDE_SCALEENGINE_H
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#include <math.h>
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#include <QFont>
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#include <QString>
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#include <QList>
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#include "dsp/physicalunit.h"
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#include "export.h"
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class SDRGUI_API ScaleEngine {
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public:
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struct Tick {
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float pos;
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bool major;
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float textPos;
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float textSize;
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QString text;
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};
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typedef QList<Tick> TickList;
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ScaleEngine();
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void setOrientation(Qt::Orientation orientation);
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void setFont(const QFont& font);
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void setSize(float size);
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float getSize() { return m_size; }
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void setRange(Unit::Physical physicalUnit, float rangeMin, float rangeMax);
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float getRange() const { return m_rangeMax - m_rangeMin; }
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float getRangeMin() const { return m_rangeMin; }
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float getRangeMax() const { return m_rangeMax; }
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void setMakeOpposite(bool makeOpposite) { m_makeOpposite = makeOpposite; }
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void setFixedDecimalPlaces(int decimalPlaces) { m_fixedDecimalPlaces =decimalPlaces; }
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void setTruncateMode(bool mode);
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float getPosFromValue(double value);
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float getValueFromPos(double pos);
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const TickList& getTickList();
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float getScaleWidth();
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private:
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// base configuration
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Qt::Orientation m_orientation;
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QFont m_font;
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float m_charSize;
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// graph configuration
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double m_size;
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Unit::Physical m_physicalUnit;
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double m_rangeMin;
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double m_rangeMax;
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// calculated values
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bool m_recalc;
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double m_scale;
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QString m_unitStr;
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QString m_multiplierStr;
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TickList m_tickList;
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double m_majorTickValueDistance;
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double m_firstMajorTickValue;
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int m_numMinorTicks;
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int m_decimalPlaces;
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int m_fixedDecimalPlaces;
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bool m_makeOpposite; // will show -value instead of value
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bool m_truncateMode; //!< truncate upper digits mode
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bool m_truncated; //!< true if upper digits are truncated
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double m_truncationValue; //!< value to subreact from tick display values
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QString formatTick(double value, int decimalPlaces);
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void calcCharSize();
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void calcScaleFactor();
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double calcMajorTickUnits(double distance, int* retDecimalPlaces);
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int calcTickTextSize(double distance);
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void forceTwoTicks();
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void reCalc();
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void updateTruncation();
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inline int order(double value) {
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return floor(log10(value));
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}
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double majorTickValue(int tick);
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double minorTickValue(int tick);
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QString getRangeMinStr();
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QString getRangeMaxStr();
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float getPosFromValueTrunc(double value);
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float getValueFromPosTrunc(double pos);
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};
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#endif // INCLUDE_SCALEENGINE_H
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