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297 lines
12 KiB
297 lines
12 KiB
13 years ago
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/* -*- Mode: C++ -*-
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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 __KDCHARTPAINTER_H__
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#define __KDCHARTPAINTER_H__
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#include <qmap.h>
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#include <qrect.h>
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#include <qdatetime.h>
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#include <qregion.h>
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#include <qstring.h>
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#include "KDChartGlobal.h"
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#include "KDChartUnknownTypeException.h"
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#include "KDChartNotEnoughSpaceException.h"
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#include "KDChartTable.h"
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#include "KDChartDataRegion.h"
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#include "KDChartParams.h"
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class KDChartTableDataBase;
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class KDChartCustomBox;
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class KDChartTextPiece;
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class KDChartPropertySet;
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class KDChartAxisParams;
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class QPainter;
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struct internal__KDChart__CalcValues {
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bool processThisAxis;
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bool bSteadyCalc;
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bool bLogarithmic;
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bool bDecreasing;
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KDChartAxisParams::AxisPos basicPos;
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QPoint orig;
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QPoint 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 isDateTime;
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bool autoDtLabels;
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QDateTime dtLow;
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QDateTime dtHigh;
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KDChartAxisParams::ValueScale dtDeltaScale;
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double nLow;
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double nHigh;
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double nDelta;
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double nDeltaPix;
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double pLastX;
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double pLastY;
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};
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class KDCHART_EXPORT KDChartPainter
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{
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public:
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static KDChartPainter* create( KDChartParams* params,
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bool make2nd = false );
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virtual ~KDChartPainter();
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static void registerPainter( const QString& painterName,
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KDChartPainter* painter );
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static void unregisterPainter( const QString& painterName );
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virtual void setupGeometry ( QPainter* painter,
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KDChartTableDataBase* data,
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const QRect& rect );
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virtual void paint( QPainter* painter, KDChartTableDataBase* data,
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bool paintFirst,
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bool paintLast,
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KDChartDataRegionList* regions = 0,
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const QRect* rect = 0,
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bool mustCalculateGeometry = true );
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virtual QRect outermostRect() const { return _outermostRect; }
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static void drawMarker( QPainter* painter,
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int style,
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const QColor& color,
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const QPoint& p,
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const QSize& size,
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uint align = Qt::AlignCenter );
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protected:
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KDChartPainter( KDChartParams* );
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// Note: dataRow, dataCol (and data3rd, resp.)
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// must only be set if area == KDChartEnums::AreaChartDataRegion
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virtual void paintArea( QPainter* painter,
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uint area,
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KDChartDataRegionList* regions = 0,
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uint dataRow = 0,
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uint dataCol = 0,
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uint data3rd = 0 );
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virtual void paintDataRegionAreas( QPainter* painter,
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KDChartDataRegionList* regions );
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virtual void paintAreaWithGap( QPainter* painter,
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QRect rect,
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const KDChartParams::KDChartFrameSettings& settings );
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virtual void paintCustomBoxes( QPainter* painter,
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KDChartDataRegionList* regions );
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virtual void paintData( QPainter* painter, KDChartTableDataBase* data,
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bool paint2nd,
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KDChartDataRegionList* regions = 0 ) = 0;
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virtual void paintDataValues( QPainter* painter,
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KDChartTableDataBase* data,
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KDChartDataRegionList* regions );
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virtual void paintAxes( QPainter* painter,
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KDChartTableDataBase* data );
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virtual void paintLegend( QPainter* painter,
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KDChartTableDataBase* data );
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virtual void paintHeaderFooter( QPainter* painter,
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KDChartTableDataBase* data );
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virtual bool axesOverlapping( int axis1, int axis2 );
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virtual void findChartDatasets( KDChartTableDataBase* data,
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bool paint2nd,
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uint chart,
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uint& chartDatasetStart,
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uint& chartDatasetEnd );
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virtual void calculateAllAxesRects( QPainter* painter,
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bool finalPrecision,
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KDChartTableDataBase* data );
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virtual QPoint calculateAnchor( const KDChartCustomBox & box,
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KDChartDataRegionList* regions = 0 ) const;
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virtual QRect calculateAreaRect( bool & allCustomBoxes,
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uint area,
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uint dataRow,
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uint dataCol,
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uint data3rd,
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KDChartDataRegionList* regions ) const;
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virtual QString fallbackLegendText( uint dataset ) const;
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virtual uint numLegendFallbackTexts( KDChartTableDataBase* data ) const;
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static QPoint pointOnCircle( const QRect& rect, double angle );
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static void makeArc( QPointArray& points,
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const QRect& rect,
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double startAngle, double angles );
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const KDChartParams* params() const
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{
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return _params;
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}
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QRect _outermostRect; /* The Outermost rect covers the complete
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area of the painter. */
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QRect _innermostRect; /* The Innermost rect covers the area of
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the painter MINUS the the global
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left/top/right/bottom leading.
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ALL following ones are INSIDE the Innermost.
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*/
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QRect _dataRect;
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QRect _axesRect; /* The Axes rect contains the Data rect. Up to 4
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axes might be at the left and bottom as well
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as at the right and/or at the to top of the
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chart.
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*/
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QRect _legendRect; /* The legend position depends on the parameter
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settings. If it is not directly to the left or
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to the right of the data display, it will be
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below the headers and on top of the footers.
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*/
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int _legendEMSpace; // an em space in the legend font
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int _legendSpacing; // the line spacing in the legend font
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int _legendHeight; // the font height in the legend font
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int _legendLeading; // the font leading in the legend font
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// int _legendTitleSpacing; // the line spacing in the legend title font
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// int _legendTitleLeading; // the font leading in the legend title font
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KDChartTextPiece* _legendTitle;
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int _numLegendTexts; // the number of legend items to show
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int _logicalWidth;
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int _logicalHeight;
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double _areaWidthP1000;
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double _areaHeightP1000;
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QMap < int, QString > _legendTexts; // precomputed legend texts
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internal__KDChart__CalcValues calcVal[ KDCHART_MAX_AXES ];
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virtual bool calculateAllAxesLabelTextsAndCalcValues(
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QPainter* 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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virtual void drawExtraLinesAndMarkers(
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KDChartPropertySet& propSet,
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const QPen& defaultPen,
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const KDChartParams::LineMarkerStyle& defaultMarkerStyle,
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int myPointX,
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int myPointY,
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QPainter* painter,
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const KDChartAxisParams* abscissaPara,
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const KDChartAxisParams* ordinatePara,
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const double areaWidthP1000,
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const double areaHeightP1000,
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bool bDrawInFront = FALSE );
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static KDChartDataRegion* drawMarker( QPainter* painter,
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const KDChartParams* params,
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double areaWidthP1000,
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double areaHeightP1000,
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int deltaX,
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int deltaY,
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int style,
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const QColor& color,
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const QPoint& p,
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uint dataset, uint value, uint chart,
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KDChartDataRegionList* regions = 0,
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int* width = 0,
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int* height = 0,
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uint align = Qt::AlignCenter );
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private:
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// disallow copy-construction and assignment
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KDChartPainter( const KDChartPainter& );
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KDChartPainter& operator=( const KDChartPainter& );
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QMap < QString, KDChartPainter* > _customPainters;
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KDChartParams* _params;
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QRect trueFrameRect( const QRect& orgRect,
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const KDChartParams::KDChartFrameSettings* settings ) const;
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int legendTitleVertGap() const;
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QFont trueLegendTitleFont() const;
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QFont trueLegendFont() const;
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void calculateHorizontalLegendSize( QPainter* painter,
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QSize& size,
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bool& legendNewLinesStartAtLeft ) const;
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bool mustDrawVerticalLegend() const;
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void findLegendTexts( KDChartTableDataBase* );
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int calculateHdFtRects( QPainter* painter,
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double averageValueP1000,
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int xposLeft,
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int xposRight,
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bool bHeader,
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int& yposTop,
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int& yposBottom );
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bool _legendNewLinesStartAtLeft;
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int _legendTitleHeight;
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int _legendTitleWidth;
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int _legendTitleMetricsHeight; // the font height in the legend title font
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int _hdLeading;
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int _ftLeading;
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};
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#endif
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