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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
*
* 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
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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