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221 lines
8.8 KiB
221 lines
8.8 KiB
/*
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KDChart - a multi-platform charting engine
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*/
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/****************************************************************************
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** Copyright (C) 2001-2003 Klarälvdalens Datakonsult AB. All rights reserved.
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**
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** This file is part of the KDChart library.
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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 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file.
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**
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** Licensees holding valid commercial KDChart licenses may use this file in
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** accordance with the KDChart Commercial License Agreement provided with
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** the Software.
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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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** See http://www.klaralvdalens-datakonsult.se/?page=products for
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** information about KDChart Commercial License Agreements.
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**
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** Contact info@klaralvdalens-datakonsult.se if any conditions of this
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** licensing are not clear to you.
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**
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**********************************************************************/
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#ifndef __KDCHARTAXESPAINTER_H__
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#define __KDCHARTAXESPAINTER_H__
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#include <tqpen.h>
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#include <tqpainter.h>
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#include <KDChartPainter.h>
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#include <KDChartTable.h>
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#include <KDChartAxisParams.h>
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class TQDateTime;
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class KDChartParams;
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class KDChartAxesPainter : public KDChartPainter
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{
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protected:
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KDChartAxesPainter( KDChartParams* params );
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virtual ~KDChartAxesPainter();
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virtual void paintAxes( TQPainter* painter,
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KDChartTableDataBase* data );
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virtual void paintData( TQPainter* painter,
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KDChartTableDataBase* data,
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bool paint2nd,
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KDChartDataRegionList* regions );
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// note: Classes inheriting from KDChartAxesPainter
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// MUST implement the following abstract functions:
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// Returns whether a normal chart is to be drawn
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// or a stacked or percentage (or ... ) chart .
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virtual bool isNormalMode() const = 0;
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// Returns the number of pixels to be added to the clipping area's height
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// to make room for special arrows indicating oversized, cut data entries.
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// Chart classes not drawing such indicators must return 0.
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virtual int clipShiftUp( bool normalMode, double areaWidthP1000 ) const = 0;
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// The actual, chart type specific drawing of the data.
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virtual void specificPaintData( TQPainter* painter,
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const TQRect& ourClipRect,
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KDChartTableDataBase* data,
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KDChartDataRegionList* regions,
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const KDChartAxisParams* axisPara,
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bool bNormalMode,
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uint chart,
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double logWidth,
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double areaWidthP1000,
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double logHeight,
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double axisYOffset,
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double minColumnValue,
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double maxColumnValue,
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double columnValueDistance,
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uint chartDatasetStart,
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uint chartDatasetEnd,
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uint datasetStart,
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uint datasetEnd ) = 0;
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virtual bool calculateAllAxesLabelTextsAndCalcValues(
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TQPainter* painter,
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KDChartTableDataBase* data,
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double areaWidthP1000,
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double areaHeightP1000,
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double& delimLen );
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private:
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public:
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// special infos needed by the different painters' implementations
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// of the specificPaintData() function
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struct abscissaInfos{
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const KDChartAxisParams* abscissaPara;
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bool bCenterThePoints;
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bool bAbscissaDecreasing;
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bool bAbscissaIsLogarithmic;
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bool bCellsHaveSeveralCoordinates;
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int numValues;
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int numLabels;
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bool bAbscissaHasTrueAxisValues;
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double abscissaStart;
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double abscissaEnd;
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double abscissaSpan;
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double abscissaDelta;
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bool bAbscissaHasTrueAxisDtValues;
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double dtLowPos;
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double dtHighPos;
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TQDateTime abscissaDtStart;
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TQDateTime abscissaDtEnd;
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bool bScaleLessThanDay;
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double abscissaDtSpan;
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double abscissaDtPixelsPerScaleUnit;
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double pointDist;
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double abscissaPixelsPerUnit;
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double abscissaZeroPos;
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};
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static void calculateAbscissaInfos(
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const KDChartParams& params,
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const KDChartTableDataBase& data,
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uint datasetStart,
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uint datasetEnd,
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double logWidth,
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const TQRect& dataRect,
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abscissaInfos& infos );
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static bool calculateAbscissaAxisValue( const TQVariant& value,
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abscissaInfos& ai,
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int colNumber,
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double& xValue );
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static void saveDrawLine( TQPainter& painter,
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TQPoint pA,
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TQPoint pZ,
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TQPen pen );
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static void calculateLabelTexts(
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TQPainter* painter,
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const KDChartTableDataBase& data,
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const KDChartParams& params,
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uint axisNumber,
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double averageValueP1000,
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double delimLen,
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// start of return parameters
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KDChartAxisParams::AxisPos& basicPos,
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TQPoint& orig,
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TQPoint& dest,
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double& pXDeltaFactor,
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double& pYDeltaFactor,
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double& pXDelimDeltaFaktor,
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double& pYDelimDeltaFaktor,
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double& nSubDelimFactor,
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double& pDelimDelta,
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double& nTxtHeight,
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double& pTextsX,
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double& pTextsY,
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double& pTextsW,
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double& pTextsH,
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int& textAlign,
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bool& isLogarithmic,
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bool& isDateTime,
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bool& autoDtLabels,
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TQDateTime& dtLow,
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TQDateTime& dtHigh,
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KDChartAxisParams::ValueScale& dtDeltaScale,
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bool adjustTheValues = false,
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double trueDelta = 0.0,
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double trueDeltaPix = 0.0 );
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static void calculateBasicTextFactors( double nTxtHeight,
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const KDChartAxisParams& para,
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double averageValueP1000,
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KDChartAxisParams::AxisPos basicPos,
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const TQPoint& orig,
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double delimLen,
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uint nLabels,
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// start of return parameters
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double& pDelimDelta,
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double& pTextsX,
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double& pTextsY,
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double& pTextsW,
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double& pTextsH,
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int& textAlign );
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static TQString truncateBehindComma( const double nVal,
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const int behindComma,
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const double nDelta,
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int& trueBehindComma );
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static TQString applyLabelsFormat( const double nVal,
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int divPow10,
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int behindComma,
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double nDelta,
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int& trueBehindComma,
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KDChartEnums::NumberNotation notation,
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const TQString& decimalPoint,
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const TQString& thousandsPoint,
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const TQString& prefix,
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const TQString& postfix,
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int totalLen,
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const TQChar& padFill,
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bool blockAlign );
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static void calculateOrdinateFactors( const KDChartAxisParams& para,
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bool bLogarithmic,
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double& nDist,
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double& nDivisor,
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double& nRound,
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double& nDelta,
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double& nSubDelimFactor,
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double& nLow,
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double& nHigh,
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bool findNextRound = false );
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static void dtAddSecs( const TQDateTime& org, const int secs, TQDateTime& dest );
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static void dtAddDays( const TQDateTime& org, const int days, TQDateTime& dest );
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static void dtAddMonths( const TQDateTime& org, const int months, TQDateTime& dest );
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static void dtAddYears( const TQDateTime& org, const int years, TQDateTime& dest );
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};
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#endif
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