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Diffstat (limited to 'chart2/source/view/inc/ScaleAutomatism.hxx')
| -rw-r--r-- | chart2/source/view/inc/ScaleAutomatism.hxx | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/chart2/source/view/inc/ScaleAutomatism.hxx b/chart2/source/view/inc/ScaleAutomatism.hxx new file mode 100644 index 000000000000..4440ad26ac5a --- /dev/null +++ b/chart2/source/view/inc/ScaleAutomatism.hxx @@ -0,0 +1,119 @@ +/************************************************************************* + * + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. + * + * Copyright 2000, 2010 Oracle and/or its affiliates. + * + * OpenOffice.org - a multi-platform office productivity suite + * + * This file is part of OpenOffice.org. + * + * OpenOffice.org is free software: you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License version 3 + * only, as published by the Free Software Foundation. + * + * OpenOffice.org is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU Lesser General Public License version 3 for more details + * (a copy is included in the LICENSE file that accompanied this code). + * + * You should have received a copy of the GNU Lesser General Public License + * version 3 along with OpenOffice.org. If not, see + * <http://www.openoffice.org/license.html> + * for a copy of the LGPLv3 License. + * + ************************************************************************/ +#ifndef _CHART2_SCALEAUTOMATISM_HXX +#define _CHART2_SCALEAUTOMATISM_HXX + +#include <com/sun/star/chart2/ExplicitIncrementData.hpp> +#include <com/sun/star/chart2/ExplicitScaleData.hpp> +#include <com/sun/star/chart2/ScaleData.hpp> + +//............................................................................. +namespace chart +{ +//............................................................................. + +//----------------------------------------------------------------------------- + +/** This class implements the calculation of automatic axis limits. +*/ +class ScaleAutomatism +{ +public: + explicit ScaleAutomatism( + const ::com::sun::star::chart2::ScaleData& rSourceScale ); + virtual ~ScaleAutomatism(); + + /** Expands own value range with the passed minimum and maximum. */ + void expandValueRange( double fMinimum, double fMaximum ); + + /** Sets additional auto scaling options. + @param bExpandBorderToIncrementRhythm If true, expands automatic + borders to the fixed or calculated increment rhythm. + @param bExpandIfValuesCloseToBorder If true, expands automatic borders + if values are too close (closer than 1/21 of visible area). + @param bExpandWideValuesToZero If true, expands automatic border to + zero, if source values are positive only or negative only, and if + the absolute values are wide spread (at least one value is less + than 5/6 of absolute maximum), or if all values are equal. + @param bExpandNarrowValuesTowardZero If true, expands automatic border + toward zero (50% of the visible range), if source values are + positive only or negative only, and if the absolute values are + close to the absolute maximum (no value is less than 5/6 of + absolute maximum). */ + void setAutoScalingOptions( + bool bExpandBorderToIncrementRhythm, + bool bExpandIfValuesCloseToBorder, + bool bExpandWideValuesToZero, + bool bExpandNarrowValuesTowardZero ); + + /** Sets the maximum allowed number of automatic main increments. + @descr The number of main increments may be limited e.g. by the length + of the axis and the font size of the axis caption text. */ + void setMaximumAutoMainIncrementCount( sal_Int32 nMaximumAutoMainIncrementCount ); + + /** Fills the passed scale data and increment data according to the own settings. */ + void calculateExplicitScaleAndIncrement( + ::com::sun::star::chart2::ExplicitScaleData& rExplicitScale, + ::com::sun::star::chart2::ExplicitIncrementData& rExplicitIncrement ) const; + + ::com::sun::star::chart2::ScaleData getScale() const; + +private: + /** Fills the passed scale data and increment data for category scaling. */ + void calculateExplicitIncrementAndScaleForCategory( + ::com::sun::star::chart2::ExplicitScaleData& rExplicitScale, + ::com::sun::star::chart2::ExplicitIncrementData& rExplicitIncrement, + bool bAutoMinimum, bool bAutoMaximum ) const; + + /** Fills the passed scale data and increment data for logarithmic scaling. */ + void calculateExplicitIncrementAndScaleForLogarithmic( + ::com::sun::star::chart2::ExplicitScaleData& rExplicitScale, + ::com::sun::star::chart2::ExplicitIncrementData& rExplicitIncrement, + bool bAutoMinimum, bool bAutoMaximum ) const; + + /** Fills the passed scale data and increment data for linear scaling. */ + void calculateExplicitIncrementAndScaleForLinear( + ::com::sun::star::chart2::ExplicitScaleData& rExplicitScale, + ::com::sun::star::chart2::ExplicitIncrementData& rExplicitIncrement, + bool bAutoMinimum, bool bAutoMaximum ) const; + +private: + ::com::sun::star::chart2::ScaleData m_aSourceScale; + + double m_fValueMinimum; /// Minimum of all source values. + double m_fValueMaximum; /// Maximum of all source values. + sal_Int32 m_nMaximumAutoMainIncrementCount; /// Maximum number of automatic main increments. + bool m_bExpandBorderToIncrementRhythm; /// true = Expand to main increments. + bool m_bExpandIfValuesCloseToBorder; /// true = Expand if values are too close to the borders. + bool m_bExpandWideValuesToZero; /// true = Expand wide spread values to zero. + bool m_bExpandNarrowValuesTowardZero; /// true = Expand narrow range toward zero (add half of range). +}; + +//............................................................................. +} //namespace chart +//............................................................................. +#endif |