LCOV - code coverage report
Current view: top level - libreoffice/chart2/source/view/inc - ScaleAutomatism.hxx (source / functions) Hit Total Coverage
Test: libreoffice_filtered.info Lines: 1 1 100.0 %
Date: 2012-12-27 Functions: 2 2 100.0 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2             : /*
       3             :  * This file is part of the LibreOffice project.
       4             :  *
       5             :  * This Source Code Form is subject to the terms of the Mozilla Public
       6             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       7             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
       8             :  *
       9             :  * This file incorporates work covered by the following license notice:
      10             :  *
      11             :  *   Licensed to the Apache Software Foundation (ASF) under one or more
      12             :  *   contributor license agreements. See the NOTICE file distributed
      13             :  *   with this work for additional information regarding copyright
      14             :  *   ownership. The ASF licenses this file to you under the Apache
      15             :  *   License, Version 2.0 (the "License"); you may not use this file
      16             :  *   except in compliance with the License. You may obtain a copy of
      17             :  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
      18             :  */
      19             : #ifndef _CHART2_SCALEAUTOMATISM_HXX
      20             : #define _CHART2_SCALEAUTOMATISM_HXX
      21             : 
      22             : #include "chartview/ExplicitScaleValues.hxx"
      23             : #include <com/sun/star/chart2/ScaleData.hpp>
      24             : 
      25             : #include <tools/date.hxx>
      26             : 
      27             : //.............................................................................
      28             : namespace chart
      29             : {
      30             : //.............................................................................
      31             : 
      32             : //-----------------------------------------------------------------------------
      33             : 
      34             : /** This class implements the calculation of automatic axis limits.
      35             : */
      36         246 : class ScaleAutomatism
      37             : {
      38             : public:
      39             :     explicit            ScaleAutomatism(
      40             :                             const ::com::sun::star::chart2::ScaleData& rSourceScale, const Date& rNullDate );
      41             :     virtual             ~ScaleAutomatism();
      42             : 
      43             :     /** Expands own value range with the passed minimum and maximum. */
      44             :     void                expandValueRange( double fMinimum, double fMaximum );
      45             : 
      46             :     /** Sets additional auto scaling options.
      47             :         @param bExpandBorderToIncrementRhythm  If true, expands automatic
      48             :             borders to the fixed or calculated increment rhythm.
      49             :         @param bExpandIfValuesCloseToBorder  If true, expands automatic borders
      50             :             if values are too close (closer than 1/21 of visible area).
      51             :         @param bExpandWideValuesToZero  If true, expands automatic border to
      52             :             zero, if source values are positive only or negative only, and if
      53             :             the absolute values are wide spread (at least one value is less
      54             :             than 5/6 of absolute maximum), or if all values are equal.
      55             :         @param bExpandNarrowValuesTowardZero  If true, expands automatic border
      56             :             toward zero (50% of the visible range), if source values are
      57             :             positive only or negative only, and if the absolute values are
      58             :             close to the absolute maximum (no value is less than 5/6 of
      59             :             absolute maximum). */
      60             :     void                setAutoScalingOptions(
      61             :                             bool bExpandBorderToIncrementRhythm,
      62             :                             bool bExpandIfValuesCloseToBorder,
      63             :                             bool bExpandWideValuesToZero,
      64             :                             bool bExpandNarrowValuesTowardZero );
      65             : 
      66             :     /** Sets the maximum allowed number of automatic main increments.
      67             :         @descr  The number of main increments may be limited e.g. by the length
      68             :                 of the axis and the font size of the axis caption text. */
      69             :     void                setMaximumAutoMainIncrementCount( sal_Int32 nMaximumAutoMainIncrementCount );
      70             : 
      71             :     /** Sets the time resolution to be used in case it is not set explicitly within the scale
      72             :     */
      73             :     void setAutomaticTimeResolution( sal_Int32 nTimeResolution );
      74             : 
      75             :     /** Fills the passed scale data and increment data according to the own settings. */
      76             :     void                calculateExplicitScaleAndIncrement(
      77             :                             ExplicitScaleData& rExplicitScale,
      78             :                             ExplicitIncrementData& rExplicitIncrement ) const;
      79             : 
      80             :     ::com::sun::star::chart2::ScaleData getScale() const;
      81             :     Date getNullDate() const;
      82             : 
      83             : private:
      84             :     /** Fills the passed scale data and increment data for category scaling. */
      85             :     void                calculateExplicitIncrementAndScaleForCategory(
      86             :                             ExplicitScaleData& rExplicitScale,
      87             :                             ExplicitIncrementData& rExplicitIncrement,
      88             :                             bool bAutoMinimum, bool bAutoMaximum ) const;
      89             : 
      90             :     /** Fills the passed scale data and increment data for logarithmic scaling. */
      91             :     void                calculateExplicitIncrementAndScaleForLogarithmic(
      92             :                             ExplicitScaleData& rExplicitScale,
      93             :                             ExplicitIncrementData& rExplicitIncrement,
      94             :                             bool bAutoMinimum, bool bAutoMaximum ) const;
      95             : 
      96             :     /** Fills the passed scale data and increment data for linear scaling. */
      97             :     void                calculateExplicitIncrementAndScaleForLinear(
      98             :                             ExplicitScaleData& rExplicitScale,
      99             :                             ExplicitIncrementData& rExplicitIncrement,
     100             :                             bool bAutoMinimum, bool bAutoMaximum ) const;
     101             : 
     102             :     /** Fills the passed scale data and increment data for date-time axis. */
     103             :     void                calculateExplicitIncrementAndScaleForDateTimeAxis(
     104             :                             ExplicitScaleData& rExplicitScale,
     105             :                             ExplicitIncrementData& rExplicitIncrement,
     106             :                             bool bAutoMinimum, bool bAutoMaximum ) const;
     107             : 
     108             : private:
     109             :     ::com::sun::star::chart2::ScaleData             m_aSourceScale;
     110             : 
     111             :     double              m_fValueMinimum;                    /// Minimum of all source values.
     112             :     double              m_fValueMaximum;                    /// Maximum of all source values.
     113             :     sal_Int32           m_nMaximumAutoMainIncrementCount;   /// Maximum number of automatic main increments.
     114             :     bool                m_bExpandBorderToIncrementRhythm;   /// true = Expand to main increments.
     115             :     bool                m_bExpandIfValuesCloseToBorder;     /// true = Expand if values are too close to the borders.
     116             :     bool                m_bExpandWideValuesToZero;          /// true = Expand wide spread values to zero.
     117             :     bool                m_bExpandNarrowValuesTowardZero;    /// true = Expand narrow range toward zero (add half of range).
     118             :     sal_Int32           m_nTimeResolution;// a constant out of ::com::sun::star::chart::TimeUnit
     119             : 
     120             :     Date                m_aNullDate;
     121             : };
     122             : 
     123             : //.............................................................................
     124             : } //namespace chart
     125             : //.............................................................................
     126             : #endif
     127             : 
     128             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */

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