350 lines
15 KiB
C
350 lines
15 KiB
C
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/****************************************************************************
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** Copyright (C) 2001-2011 Klaralvdalens Datakonsult AB. All rights reserved.
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**
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** This file is part of the KD Chart library.
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**
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** Licensees holding valid commercial KD Chart licenses may use this file in
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** accordance with the KD Chart Commercial License Agreement provided with
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** the Software.
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**
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**
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** This file may be distributed and/or modified under the terms of the
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** GNU General Public License version 2 and version 3 as published by the
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** Free Software Foundation and appearing in the file LICENSE.GPL.txt included.
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**
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** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
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** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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**
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** Contact info@kdab.com if any conditions of this licensing are not
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** clear to you.
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**
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**********************************************************************/
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#ifndef __KDCHARTENUMS_H__
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#define __KDCHARTENUMS_H__
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#include "KDChartGlobal.h"
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#include <QRectF>
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#include <QObject>
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#include <QVector>
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/** \file KDChartEnums.h
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\brief Definition of global enums.
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*/
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/**
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Project global class providing some enums needed both by KDChartParams
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and by KDChartCustomBox.
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*/
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class KDCHART_EXPORT KDChartEnums :public QObject
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{
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Q_OBJECT
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Q_ENUMS( TextLayoutPolicy )
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Q_ENUMS( AreaName )
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Q_ENUMS( PositionFlag )
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public:
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/**
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GranularitySequence specifies the values, that may be applied,
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to determine a step width within a given data range.
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\note Granularity with can be set for Linear axis calculation mode only,
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there is no way to specify a step width for Logarithmic axes.
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Value occurring in the GranularitySequence names only are showing
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their respective relation ship. For real data they will most times not
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be used directly, but be multiplied by positive (or negative, resp.)
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powers of ten.
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A granularity sequence is a sequence of values from the following set:
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1, 1.25, 2, 2.5, 5.
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The reason for using one of the following three pre-defined granularity
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sequences (instead of just using the best matching step width) is to
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follow a simple rule: If scaling becomes finer (== smaller step width)
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no value, that has been on a grid line before, shall loose its line
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and be NOT on a grid line anymore!
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This means: Smaller step width may not remove any grid lines, but it
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may add additional lines in between.
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\li \c GranularitySequence_10_20 Step widths can be 1, or 2, but they never can be 2.5 nor 5, nor 1.25.
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\li \c GranularitySequence_10_50 Step widths can be 1, or 5, but they never can be 2, nor 2.5, nor 1.25.
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\li \c GranularitySequence_25_50 Step widths can be 2.5, or 5, but they never can be 1, nor 2, nor 1.25.
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\li \c GranularitySequence_125_25 Step widths can be 1.25 or 2.5 but they never can be 1, nor 2, nor 5.
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\li \c GranularitySequenceIrregular Step widths can be all of these values: 1, or 1.25, or 2, or 2.5, or 5.
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\note When ever possible, try to avoid using GranularitySequenceIrregular!
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Allowing all possible step values, using this granularity sequence involves a
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serious risk: Your users might be irritated due to 'jumping' grid lines, when step size
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is changed from 2.5 to 2 (or vice versa, resp.).
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In case you still want to use GranularitySequenceIrregular just make sure to NOT draw
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any sub-grid lines, because in most cases you will get not-matching step widths for
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the sub-grid.
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In short: GranularitySequenceIrregular can safely be used if your data range is not
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changing at all AND (b) you will not allow the coordinate plane to be zoomed
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AND (c) you are not displaying any sub-grid lines.
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Since you probably like having the value 1 as an allowed step width,
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the granularity sequence decision boils down to a boolean question:
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\li To get ten divided by five you use GranularitySequence_10_20, while
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\li for having it divided by two GranularitySequence_10_50 is your choice.
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*/
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enum GranularitySequence {
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GranularitySequence_10_20,
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GranularitySequence_10_50,
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GranularitySequence_25_50,
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GranularitySequence_125_25,
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GranularitySequenceIrregular };
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/**
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Converts the specified granularity sequence enum to a
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string representation.
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\param sequence the granularity sequence enum to convert
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\return the string representation of the granularity sequence
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*/
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static QString granularitySequenceToString( GranularitySequence sequence ) {
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switch( sequence ) {
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case GranularitySequence_10_20:
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return QString::fromLatin1("GranularitySequence_10_20");
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case GranularitySequence_10_50:
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return QString::fromLatin1("GranularitySequence_10_50");
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case GranularitySequence_25_50:
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return QString::fromLatin1("GranularitySequence_25_50");
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case GranularitySequence_125_25:
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return QString::fromLatin1("GranularitySequence_125_25");
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case GranularitySequenceIrregular:
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return QString::fromLatin1("GranularitySequenceIrregular");
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default: // should not happen
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qDebug( "Unknown granularity sequence" );
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return QString::fromLatin1("GranularitySequence_10_20");
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}
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}
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/**
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Converts the specified string to a granularity sequence enum value.
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\param string the string to convert
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\return the granularity sequence enum value
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*/
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static GranularitySequence stringToGranularitySequence( const QString& string ) {
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if( string == QString::fromLatin1("GranularitySequence_10_20") )
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return GranularitySequence_10_20;
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if( string == QString::fromLatin1("GranularitySequence_10_50") )
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return GranularitySequence_10_50;
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if( string == QString::fromLatin1("GranularitySequence_25_50") )
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return GranularitySequence_25_50;
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if( string == QString::fromLatin1("GranularitySequence_125") )
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return GranularitySequence_125_25;
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if( string == QString::fromLatin1("GranularitySequenceIrregular") )
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return GranularitySequenceIrregular;
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// default, should not happen
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return GranularitySequence_10_20;
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}
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/**
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Text layout policy: what to do if text that is to be drawn would
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cover neighboring text or neighboring areas.
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\li \c LayoutJustOverwrite Just ignore the layout collision and write the text nevertheless.
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\li \c LayoutPolicyRotate Try counter-clockwise rotation to make the text fit into the space.
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\li \c LayoutPolicyShiftVertically Shift the text baseline upwards (or downwards, resp.) and draw a connector line between the text and its anchor.
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\li \c LayoutPolicyShiftHorizontally Shift the text baseline to the left (or to the right, resp.) and draw a connector line between the text and its anchor.
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\li \c LayoutPolicyShrinkFontSize Reduce the text font size.
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\sa KDChartParams::setPrintDataValues
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*/
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enum TextLayoutPolicy { LayoutJustOverwrite,
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LayoutPolicyRotate,
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LayoutPolicyShiftVertically,
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LayoutPolicyShiftHorizontally,
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LayoutPolicyShrinkFontSize };
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/**
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Converts the specified text layout policy enum to a
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string representation.
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\param type the text layout policy to convert
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\return the string representation of the text layout policy enum
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*/
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static QString layoutPolicyToString( TextLayoutPolicy type );
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/**
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Converts the specified string to a text layout policy enum value.
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\param string the string to convert
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\return the text layout policy enum value
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*/
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static TextLayoutPolicy stringToLayoutPolicy( const QString& string );
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/**
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Numerical values of the static KDChart::Position instances,
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for using a Position::value() with a switch() statement.
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\sa Position
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*/
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enum PositionValue {
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PositionUnknown = 0,
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PositionCenter = 1,
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PositionNorthWest = 2,
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PositionNorth = 3,
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PositionNorthEast = 4,
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PositionEast = 5,
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PositionSouthEast = 6,
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PositionSouth = 7,
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PositionSouthWest = 8,
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PositionWest = 9,
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PositionFloating =10
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};
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/**
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Measure calculation mode: the way how the absolute value of a KDChart::Measure is determined during KD Chart's internal geometry calculation time.
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KDChart::Measure values either are relative (calculated in relation to a given AbstractArea), or they are absolute (used as fixed values).
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Values stored in relative measure always are interpreted as per-mille of a reference area's height (or width, resp.) depending on the orientation set for the KDChart::Measure.
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\li \c MeasureCalculationModeAbsolute Value set by setValue() is absolute, to be used unchanged.
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\li \c MeasureCalculationModeRelative Value is relative, the reference area is specified by setReferenceArea(), and orientation specified by setOrientation().
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\li \c MeasureCalculationModeAuto Value is relative, KD Chart will automatically determine which reference area to use, and it will determine the orientation too.
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\li \c MeasureCalculationModeAutoArea Value is relative, Orientation is specified by setOrientation(), and KD Chart will automatically determine which reference area to use.
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\li \c MeasureCalculationModeAutoOrientation Value is relative, Area is specified by setReferenceArea(), and KD Chart will automatically determine which orientation to use.
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\sa KDChart::Measure::setCalculationMode
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*/
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enum MeasureCalculationMode { MeasureCalculationModeAbsolute,
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MeasureCalculationModeRelative,
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MeasureCalculationModeAuto,
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MeasureCalculationModeAutoArea,
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MeasureCalculationModeAutoOrientation };
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/**
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Converts the specified measure calculation mode enum to a
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string representation.
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\param mode the measure calculation mode to convert
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\return the string representation of the Measure calculation mode enum
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*/
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static QString measureCalculationModeToString( MeasureCalculationMode mode ) {
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switch( mode ) {
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case MeasureCalculationModeAbsolute:
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return QString::fromLatin1("MeasureCalculationModeAbsolute");
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case MeasureCalculationModeAuto:
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return QString::fromLatin1("MeasureCalculationModeAuto");
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case MeasureCalculationModeAutoArea:
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return QString::fromLatin1("MeasureCalculationModeAutoArea");
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case MeasureCalculationModeAutoOrientation:
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return QString::fromLatin1("MeasureCalculationModeAutoOrientation");
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case MeasureCalculationModeRelative:
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return QString::fromLatin1("MeasureCalculationModeRelative");
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default: // should not happen
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qDebug( "Unknown measure calculation mode" );
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return QString::fromLatin1("MeasureCalculationModeAuto");
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}
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}
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/**
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Converts the specified string to a measure calculation mode enum value.
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\param string the string to convert
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\return the measure calculation mode enum value
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*/
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static MeasureCalculationMode stringToMeasureCalculationMode( const QString& string ) {
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if( string == QString::fromLatin1("MeasureCalculationModeAbsolute") )
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return MeasureCalculationModeAbsolute;
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if( string == QString::fromLatin1("MeasureCalculationModeAuto") )
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return MeasureCalculationModeAuto;
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if( string == QString::fromLatin1("MeasureCalculationModeAutoArea") )
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return MeasureCalculationModeAutoArea;
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if( string == QString::fromLatin1("MeasureCalculationModeAutoOrientation") )
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return MeasureCalculationModeAutoOrientation;
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if( string == QString::fromLatin1("MeasureCalculationModeRelative") )
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return MeasureCalculationModeRelative;
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// default, should not happen
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return MeasureCalculationModeAuto;
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}
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/**
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Measure orientation mode: the way how the absolute value of a KDChart::Measure is determined during KD Chart's internal geometry calculation time.
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KDChart::Measure values either are relative (calculated in relation to a given AbstractArea), or they are absolute (used as fixed values).
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Values stored in relative measure take into account the width (and/or the height, resp.) of a so-called reference area,
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that is either specified by KDChart::Measure::setReferenceArea, or determined by KD Chart automatically, respectively.
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\li \c MeasureOrientationAuto Value is calculated, based upon the width (or on the height, resp.) of the reference area: KD Chart will automatically determie an appropriate way.
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\li \c MeasureOrientationHorizontal Value is calculated, based upon the width of the reference area.
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\li \c MeasureOrientationVertical Value is calculated, based upon the height of the reference area.
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\li \c MeasureOrientationMinimum Value is calculated, based upon the width (or on the height, resp.) of the reference area - which ever is smaller.
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\li \c MeasureOrientationMaximum Value is calculated, based upon the width (or on the height, resp.) of the reference area - which ever is smaller.
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\sa KDChart::Measure::setOrientationMode
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*/
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enum MeasureOrientation { MeasureOrientationAuto,
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MeasureOrientationHorizontal,
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MeasureOrientationVertical,
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MeasureOrientationMinimum,
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MeasureOrientationMaximum };
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/**
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Converts the specified measure orientation enum to a
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string representation.
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\param mode the measure orientation to convert
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\return the string representation of the measure orientation enum
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*/
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static QString measureOrientationToString( MeasureOrientation mode ) {
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switch( mode ) {
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case MeasureOrientationAuto:
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return QString::fromLatin1("MeasureOrientationAuto");
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case MeasureOrientationHorizontal:
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return QString::fromLatin1("MeasureOrientationHorizontal");
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case MeasureOrientationVertical:
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return QString::fromLatin1("MeasureOrientationVertical");
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case MeasureOrientationMinimum:
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return QString::fromLatin1("MeasureOrientationMinimum");
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case MeasureOrientationMaximum:
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return QString::fromLatin1("MeasureOrientationMaximum");
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default: // should not happen
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qDebug( "Unknown measure orientation mode" );
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return QString::fromLatin1("MeasureOrientationAuto");
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}
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}
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/**
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Converts the specified string to a measure orientation enum value.
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\param string the string to convert
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\return the measure orientation enum value
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*/
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static MeasureOrientation stringToMeasureOrientation( const QString& string ) {
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if( string == QString::fromLatin1("MeasureOrientationAuto") )
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return MeasureOrientationAuto;
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if( string == QString::fromLatin1("MeasureOrientationHorizontal") )
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return MeasureOrientationHorizontal;
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if( string == QString::fromLatin1("MeasureOrientationVertical") )
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return MeasureOrientationVertical;
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if( string == QString::fromLatin1("MeasureOrientationMinimum") )
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return MeasureOrientationMinimum;
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if( string == QString::fromLatin1("MeasureOrientationMaximum") )
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return MeasureOrientationMaximum;
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// default, should not happen
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return MeasureOrientationAuto;
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}
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};
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#endif
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