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Diffstat (limited to 'src/gui/doublespinbox.h')
| -rw-r--r-- | src/gui/doublespinbox.h | 131 |
1 files changed, 131 insertions, 0 deletions
diff --git a/src/gui/doublespinbox.h b/src/gui/doublespinbox.h new file mode 100644 index 0000000..75f6c90 --- /dev/null +++ b/src/gui/doublespinbox.h @@ -0,0 +1,131 @@ +/*************************************************************************** + * Copyright (C) 2003-2004 by David Saxton * + * david@bluehaze.org * + * * + * This program is free software; you can redistribute it and/or modify * + * it under the terms of the GNU General Public License as published by * + * the Free Software Foundation; either version 2 of the License, or * + * (at your option) any later version. * + ***************************************************************************/ + +#ifndef DOUBLESPINBOX_H +#define DOUBLESPINBOX_H + +#include <qspinbox.h> + +/** +Where appropriate, function names with value in them should +be prefixed with "real" - e.g. realValue() - to get the value stored in the +spin box plus the SI magnitude symbol it is showing + +@author David Saxton +*/ +class DoubleSpinBox : public QSpinBox +{ + Q_OBJECT + public: + DoubleSpinBox( double lower, double upper, double minAbs, double value, const QString & unit, QWidget * parent = 0 ); + virtual ~DoubleSpinBox(); + + /** + * The minimum value is the lowest number that the user can enter. + */ + double minValue() const { return m_minValue; } + /** + * @see minValue + */ + void setMinValue( double minValue ) { m_minValue = minValue; } + /** + * The minimum value is the lowest number that the user can enter. + */ + void setMinValue( int minValue ) { m_minValue = minValue; } + /** + * The maximum value is the highest number that the user can enter. + */ + double maxValue() const { return m_maxValue; } + /** + * @see maxValue + */ + void setMaxValue( double maxValue ) { m_maxValue = maxValue; } + /** + * @see maxValue + */ + void setMaxValue( int maxValue ) { m_maxValue = maxValue; } + /** + * The minimum absolute value is the smallest value that the user can + * enter before the value is considered 0. + */ + void setMinAbsValue( double minAbsValue ) { m_minAbsValue = minAbsValue; } + /** + * The actual value that the user has entered - e.g. if the spinbox + * displays "100 kF", then the value returned will be 1e5. + */ + double value(); + /** + * Set the value to be displayed - e.g. if value is 1e5, then the + * spinbox might display "100 kF". + */ + void setValue( double value ); + /** + * Sets the unit used, e.g. "F" + */ + void setUnit( const QString & unit ); + + public slots: + virtual void stepUp(); + virtual void stepDown(); + + signals: + /** + * This value is emitted whenever the value of the spinbox changes. + */ + void valueChanged( double value ); + + protected slots: + /** + * Checks if the value has changed - and if so, emits a valueChanged + * signal. + */ + void checkIfChanged(); + /** + * Sets the suffix from m_queuedSuffix. Called from QTimer::singleShot + * to avoid strange recursion problems. + */ + void setQueuedSuffix(); + + protected: + /** + * Updates the suffix using m_unit and value. + */ + void updateSuffix( double value ); + /** + * Returns the multiplication number from what is displayed + * in the box, e.g. "10 kV" will return "1000" due to the letter "k" presence + */ + double getMult(); + /** + * Returns the number currently displayed in the spin box. + */ + double getDisplayedNumber( bool * ok ); + /** + * Overloaded the method in QSpinxBox to allow SI prefixes to be entered + */ + virtual int mapTextToValue( bool * ok ); + /** + * Overloaded the method in QSpinxBox to allow SI prefixes to be entered + */ + virtual QString mapValueToText( int v ); + /** + * Returns value rounded off to one significant figure. + */ + double roundToOneSF( double value ); + + QString m_queuedSuffix; ///< Used + QString m_unit; + double m_minValue; + double m_maxValue; + double m_minAbsValue; + double m_lastEmittedValue; +}; + +#endif |