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Diffstat (limited to 'libkdchart/KDChartAxesPainter.h')
| -rw-r--r-- | libkdchart/KDChartAxesPainter.h | 220 |
1 files changed, 220 insertions, 0 deletions
diff --git a/libkdchart/KDChartAxesPainter.h b/libkdchart/KDChartAxesPainter.h new file mode 100644 index 0000000..29e955b --- /dev/null +++ b/libkdchart/KDChartAxesPainter.h @@ -0,0 +1,220 @@ +/* -*- Mode: C++ -*- + KDChart - a multi-platform charting engine + */ + +/**************************************************************************** + ** Copyright (C) 2001-2003 Klarälvdalens Datakonsult AB. All rights reserved. + ** + ** This file is part of the KDChart library. + ** + ** This file may be distributed and/or modified under the terms of the + ** GNU General Public License version 2 as published by the Free Software + ** Foundation and appearing in the file LICENSE.GPL included in the + ** packaging of this file. + ** + ** Licensees holding valid commercial KDChart licenses may use this file in + ** accordance with the KDChart Commercial License Agreement provided with + ** the Software. + ** + ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE + ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. + ** + ** See http://www.klaralvdalens-datakonsult.se/?page=products for + ** information about KDChart Commercial License Agreements. + ** + ** Contact [email protected] if any conditions of this + ** licensing are not clear to you. + ** + **********************************************************************/ +#ifndef __KDCHARTAXESPAINTER_H__ +#define __KDCHARTAXESPAINTER_H__ + +#include <qpen.h> +#include <qpainter.h> + +#include <KDChartPainter.h> +#include <KDChartTable.h> +#include <KDChartAxisParams.h> + +class QDateTime; +class KDChartParams; + +class KDChartAxesPainter : public KDChartPainter +{ + protected: + KDChartAxesPainter( KDChartParams* params ); + virtual ~KDChartAxesPainter(); + + virtual void paintAxes( QPainter* painter, + KDChartTableDataBase* data ); + + virtual void paintData( QPainter* painter, + KDChartTableDataBase* data, + bool paint2nd, + KDChartDataRegionList* regions ); + + // note: Classes inheriting from KDChartAxesPainter + // MUST implement the following abstract functions: + + // Returns whether a normal chart is to be drawn + // or a stacked or percentage (or ... ) chart . + virtual bool isNormalMode() const = 0; + + // Returns the number of pixels to be added to the clipping area's height + // to make room for special arrows indicating oversized, cut data entries. + // Chart classes not drawing such indicators must return 0. + virtual int clipShiftUp( bool normalMode, double areaWidthP1000 ) const = 0; + + // The actual, chart type specific drawing of the data. + virtual void specificPaintData( QPainter* painter, + const QRect& ourClipRect, + KDChartTableDataBase* data, + KDChartDataRegionList* regions, + const KDChartAxisParams* axisPara, + bool bNormalMode, + uint chart, + double logWidth, + double areaWidthP1000, + double logHeight, + double axisYOffset, + double minColumnValue, + double maxColumnValue, + double columnValueDistance, + uint chartDatasetStart, + uint chartDatasetEnd, + uint datasetStart, + uint datasetEnd ) = 0; + + virtual bool calculateAllAxesLabelTextsAndCalcValues( + QPainter* painter, + KDChartTableDataBase* data, + double areaWidthP1000, + double areaHeightP1000, + double& delimLen ); + + private: + public: + // special infos needed by the different painters' implementations + // of the specificPaintData() function + struct abscissaInfos{ + const KDChartAxisParams* abscissaPara; + bool bCenterThePoints; + bool bAbscissaDecreasing; + bool bAbscissaIsLogarithmic; + bool bCellsHaveSeveralCoordinates; + int numValues; + int numLabels; + bool bAbscissaHasTrueAxisValues; + double abscissaStart; + double abscissaEnd; + double abscissaSpan; + double abscissaDelta; + bool bAbscissaHasTrueAxisDtValues; + double dtLowPos; + double dtHighPos; + QDateTime abscissaDtStart; + QDateTime abscissaDtEnd; + bool bScaleLessThanDay; + double abscissaDtSpan; + double abscissaDtPixelsPerScaleUnit; + double pointDist; + double abscissaPixelsPerUnit; + double abscissaZeroPos; + }; + static void calculateAbscissaInfos( + const KDChartParams& params, + const KDChartTableDataBase& data, + uint datasetStart, + uint datasetEnd, + double logWidth, + const QRect& dataRect, + abscissaInfos& infos ); + static bool calculateAbscissaAxisValue( const QVariant& value, + abscissaInfos& ai, + int colNumber, + double& xValue ); + + static void saveDrawLine( QPainter& painter, + QPoint pA, + QPoint pZ, + QPen pen ); + static void calculateLabelTexts( + QPainter* painter, + const KDChartTableDataBase& data, + const KDChartParams& params, + uint axisNumber, + double averageValueP1000, + double delimLen, + // start of return parameters + KDChartAxisParams::AxisPos& basicPos, + QPoint& orig, + QPoint& dest, + double& pXDeltaFactor, + double& pYDeltaFactor, + double& pXDelimDeltaFaktor, + double& pYDelimDeltaFaktor, + double& nSubDelimFactor, + double& pDelimDelta, + double& nTxtHeight, + double& pTextsX, + double& pTextsY, + double& pTextsW, + double& pTextsH, + int& textAlign, + bool& isLogarithmic, + bool& isDateTime, + bool& autoDtLabels, + QDateTime& dtLow, + QDateTime& dtHigh, + KDChartAxisParams::ValueScale& dtDeltaScale, + bool adjustTheValues = false, + double trueDelta = 0.0, + double trueDeltaPix = 0.0 ); + static void calculateBasicTextFactors( double nTxtHeight, + const KDChartAxisParams& para, + double averageValueP1000, + KDChartAxisParams::AxisPos basicPos, + const QPoint& orig, + double delimLen, + uint nLabels, + // start of return parameters + double& pDelimDelta, + double& pTextsX, + double& pTextsY, + double& pTextsW, + double& pTextsH, + int& textAlign ); + static QString truncateBehindComma( const double nVal, + const int behindComma, + const double nDelta, + int& trueBehindComma ); + static QString applyLabelsFormat( const double nVal, + int divPow10, + int behindComma, + double nDelta, + int& trueBehindComma, + KDChartEnums::NumberNotation notation, + const QString& decimalPoint, + const QString& thousandsPoint, + const QString& prefix, + const QString& postfix, + int totalLen, + const QChar& padFill, + bool blockAlign ); + static void calculateOrdinateFactors( const KDChartAxisParams& para, + bool bLogarithmic, + double& nDist, + double& nDivisor, + double& nRound, + double& nDelta, + double& nSubDelimFactor, + double& nLow, + double& nHigh, + bool findNextRound = false ); + static void dtAddSecs( const QDateTime& org, const int secs, QDateTime& dest ); + static void dtAddDays( const QDateTime& org, const int days, QDateTime& dest ); + static void dtAddMonths( const QDateTime& org, const int months, QDateTime& dest ); + static void dtAddYears( const QDateTime& org, const int years, QDateTime& dest ); +}; + +#endif |