File indexing completed on 2024-12-15 04:02:27

 /*
  * SPDX-FileCopyrightText: 2001-2015 Klaralvdalens Datakonsult AB. All rights reserved.
  *
  * This file is part of the KD Chart library.
  *
  * SPDX-License-Identifier: GPL-2.0-or-later
  */
 
 #include "KChartPercentLineDiagram_p.h"
 
 #include <QModelIndex>
 
 #include "KChartBarDiagram.h"
 #include "KChartLineDiagram.h"
 #include "KChartTextAttributes.h"
 #include "KChartAttributesModel.h"
 #include "KChartAbstractCartesianDiagram.h"
 #include "PaintingHelpers_p.h"
 
 using namespace KChart;
 using namespace std;
 
 PercentLineDiagram::PercentLineDiagram( LineDiagram* d )
     : LineDiagramType( d )
 {
 }
 
 LineDiagram::LineType PercentLineDiagram::type() const
 {
     return LineDiagram::Percent;
 }
 
 const QPair<QPointF, QPointF> PercentLineDiagram::calculateDataBoundaries() const
 {
     const qreal xMin = 0.0;
     qreal xMax = diagram()->model() ? diagram()->model()->rowCount( diagram()->rootIndex() ) : 0;
     if ( !diagram()->centerDataPoints() && diagram()->model() )
         xMax -= 1;
     const qreal yMin = 0.0;
     const qreal yMax = 100.0;
 
     QPointF bottomLeft( QPointF( xMin, yMin ) );
     QPointF topRight( QPointF( xMax, yMax ) );
     return QPair<QPointF, QPointF> ( bottomLeft, topRight );
 }
 
 void PercentLineDiagram::paint( PaintContext* ctx )
 {
     reverseMapper().clear();
 
     const int columnCount = compressor().modelDataColumns();
     const int rowCount = compressor().modelDataRows();
 
 // FIXME integrade column index retrieval to compressor:
     int maxFound = 0;
 //    {   // find the last column number that is not hidden
 //        for ( int iColumn =  datasetDimension() - 1;
 //             iColumn <  columnCount;
 //             iColumn += datasetDimension() )
 //            if ( ! diagram()->isHidden( iColumn ) )
 //                maxFound = iColumn;
 //    }
     maxFound = columnCount;
     // ^^^ temp
     const int lastVisibleColumn = maxFound - 1;
 
     LabelPaintCache lpc;
     LineAttributesInfoList lineList;
 
     //FIXME(khz): add LineAttributes::MissingValuesPolicy support for LineDiagram::Stacked and ::Percent
 
     qreal maxValue = 100; // always 100%
     qreal sumValues = 0;
     QVector <qreal > percentSumValues;
 
     //calculate sum of values for each column and store
     for ( int row = 0; row < rowCount; ++row )
     {
         for ( int col = 0; col < columnCount; ++col )
         {
             const CartesianDiagramDataCompressor::CachePosition position( row, col );
             CartesianDiagramDataCompressor::DataPoint point = compressor().data( position );
             const QModelIndex sourceIndex = attributesModel()->mapToSource( point.index );
             const LineAttributes laCell = diagram()->lineAttributes( sourceIndex );
             const LineAttributes::MissingValuesPolicy policy = laCell.missingValuesPolicy();
             if ( ISNAN( point.value ) && policy == LineAttributes::MissingValuesAreBridged )
                 point.value = interpolateMissingValue( position );
             if ( point.value > 0 )
                 sumValues += point.value;
             if ( col == lastVisibleColumn )
             {
                 percentSumValues << sumValues ;
                 sumValues = 0;
             }
         }
     }
 
     QList<QPointF> bottomPoints;
     bool bFirstDataset = true;
 
     for ( int column = 0; column < columnCount; ++column )
     {
         //display area can be set by dataset ( == column) and/or by cell
         LineAttributes laPreviousCell; // by default no area is drawn
         QModelIndex indexPreviousCell;
         QList<QPolygonF> areas;
         QList<QPointF> points;
 
         for ( int row = 0; row < rowCount; ++row )
         {
             const CartesianDiagramDataCompressor::CachePosition position( row, column );
             CartesianDiagramDataCompressor::DataPoint point = compressor().data( position );
             const QModelIndex sourceIndex = attributesModel()->mapToSource( point.index );
             const LineAttributes laCell = diagram()->lineAttributes( sourceIndex );
             const bool bDisplayCellArea = laCell.displayArea();
 
             qreal stackedValues = 0, nextValues = 0, nextKey = 0;
             for ( int column2 = column;
                   column2 >= 0;//datasetDimension() - 1;
                   column2 -= 1 )//datasetDimension() )
             {
                 const CartesianDiagramDataCompressor::CachePosition position( row, column2 );
                 CartesianDiagramDataCompressor::DataPoint point = compressor().data( position );
 
                 const LineAttributes::MissingValuesPolicy policy = laCell.missingValuesPolicy();
                 if ( ISNAN( point.value ) && policy == LineAttributes::MissingValuesAreBridged )
                     point.value = interpolateMissingValue( position );
 
                 const qreal val = point.value;
                 if ( val > 0 )
                     stackedValues += val;
                 //qDebug() << valueForCell( iRow, iColumn2 );
                 if ( row + 1 < rowCount ) {
                     const CartesianDiagramDataCompressor::CachePosition position( row + 1, column2 );
                     CartesianDiagramDataCompressor::DataPoint point = compressor().data( position );
 
                     const LineAttributes::MissingValuesPolicy policy = laCell.missingValuesPolicy();
                     if ( ISNAN( point.value ) && policy == LineAttributes::MissingValuesAreBridged )
                         point.value = interpolateMissingValue( position );
 
                     const qreal val = point.value;
                     if ( val > 0 )
                         nextValues += val;
                     nextKey = point.key;
                 }
             }
             if ( percentSumValues.at( row ) != 0 )
                 stackedValues = stackedValues / percentSumValues.at( row ) * maxValue;
             else
                 stackedValues = 0.0;
             //qDebug() << stackedValues << endl;
             QPointF nextPoint = ctx->coordinatePlane()->translate( QPointF( diagram()->centerDataPoints() ? point.key + 0.5 : point.key, stackedValues ) );
             points << nextPoint;
 
             const QPointF ptNorthWest( nextPoint );
             const QPointF ptSouthWest(
                 bDisplayCellArea
                 ? ( bFirstDataset
                     ? ctx->coordinatePlane()->translate( QPointF( diagram()->centerDataPoints() ? point.key + 0.5 : point.key, 0.0 ) )
                     : bottomPoints.at( row )
                     )
                 : nextPoint );
             QPointF ptNorthEast;
             QPointF ptSouthEast;
 
             if ( row + 1 < rowCount ) {
                  if ( percentSumValues.at( row + 1 ) != 0 )
                      nextValues = nextValues / percentSumValues.at( row + 1 ) * maxValue;
                  else
                      nextValues = 0.0;
                 QPointF toPoint = ctx->coordinatePlane()->translate( QPointF( diagram()->centerDataPoints() ? nextKey + 0.5 : nextKey, nextValues ) );
                 lineList.append( LineAttributesInfo( sourceIndex, nextPoint, toPoint ) );
                 ptNorthEast = toPoint;
                 ptSouthEast =
                     bDisplayCellArea
                     ? ( bFirstDataset
                         ? ctx->coordinatePlane()->translate( QPointF( diagram()->centerDataPoints() ? nextKey + 0.5 : nextKey, 0.0 ) )
                         : bottomPoints.at( row + 1 )
                         )
                     : toPoint;
                 if ( areas.count() && laCell != laPreviousCell ) {
                     PaintingHelpers::paintAreas( m_private, ctx, indexPreviousCell, areas, laPreviousCell.transparency() );
                     areas.clear();
                 }
                 if ( bDisplayCellArea ) {
                     QPolygonF poly;
                     poly << ptNorthWest << ptNorthEast << ptSouthEast << ptSouthWest;
                     areas << poly;
                     laPreviousCell = laCell;
                     indexPreviousCell = sourceIndex;
                 } else {
                     //qDebug() << "no area shown for row"<<iRow<<"  column"<<iColumn;
                 }
             } else {
                 ptNorthEast = ptNorthWest;
                 ptSouthEast = ptSouthWest;
             }
 
             if ( !ISNAN( point.value ) )
             {
                 const PositionPoints pts( ptNorthWest, ptNorthEast, ptSouthEast, ptSouthWest );
                 m_private->addLabel( &lpc, sourceIndex, &position, pts, Position::NorthWest,
                                      Position::NorthWest, point.value );
             }
         }
         if ( areas.count() ) {
             PaintingHelpers::paintAreas( m_private, ctx, indexPreviousCell, areas, laPreviousCell.transparency() );
             areas.clear();
         }
         bottomPoints = points;
         bFirstDataset = false;
     }
     PaintingHelpers::paintElements( m_private, ctx, lpc, lineList );
 }