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/* -*- 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 info@klaralvdalens-datakonsult.se 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
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