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