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 "KChartPercentLyingBarDiagram_p.h"
 
 #include <QModelIndex>
 
 #include "KChartBarDiagram.h"
 #include "KChartTextAttributes.h"
 #include "KChartAttributesModel.h"
 #include "KChartAbstractCartesianDiagram.h"
 
 using namespace KChart;
 
 PercentLyingBarDiagram::PercentLyingBarDiagram( BarDiagram* d )
     : BarDiagramType( d )
 {
 }
 
 BarDiagram::BarType PercentLyingBarDiagram::type() const
 {
     return BarDiagram::Percent;
 }
 
 const QPair<QPointF, QPointF> PercentLyingBarDiagram::calculateDataBoundaries() const
 {
     //const int rowCount = compressor().modelDataRows();
     //const int colCount = compressor().modelDataColumns();
 
     const qreal xMin = 0;
     const qreal xMax = diagram()->model() ? diagram()->model()->rowCount( diagram()->rootIndex() ) : 0;
     qreal yMin = 0.0, yMax = 100.0;
     /*for ( int col = 0; col < colCount; ++col )
     {
         for ( int row = 0; row < rowCount; ++row )
         {
             // Ordinate should begin at 0 the max value being the 100% pos
             const QModelIndex idx = diagram()->model()->index( row, col, diagram()->rootIndex() );
             // only positive values are handled
             qreal value = diagram()->model()->data( idx ).toReal();
             if ( value > 0 )
                 yMax = qMax( yMax, value );
         }
     }*/
     // special cases
     if ( yMax == yMin ) {
         if ( yMin == 0.0 )
             yMax = 0.1; //we need at least a range
         else
             yMax = 0.0; // they are the same but negative
     }
     const QPointF bottomLeft( QPointF( yMin, xMin ) );
     const QPointF topRight( QPointF( yMax, xMax ) );
 
     //qDebug() << "BarDiagram::calculateDataBoundaries () returns ( " << bottomLeft << topRight <<")";
     return QPair< QPointF, QPointF >( bottomLeft,  topRight );
 }
 
 void PercentLyingBarDiagram::paint( PaintContext* ctx )
 {
     reverseMapper().clear();
 
     const QPair<QPointF,QPointF> boundaries = diagram()->dataBoundaries(); // cached
 
     const QPointF boundLeft = ctx->coordinatePlane()->translate( boundaries.first ) ;
     const QPointF boundRight = ctx->coordinatePlane()->translate( boundaries.second );
 
     const int rowCount = compressor().modelDataRows();
     const int colCount = compressor().modelDataColumns();
 
     BarAttributes ba = diagram()->barAttributes();
     qreal barWidth = 0;
     qreal maxDepth = 0;
     qreal width = boundLeft.y() - boundRight.y();
     qreal groupWidth = width / rowCount;
     qreal spaceBetweenBars = 0;
     qreal spaceBetweenGroups = 0;
 
     if ( ba.useFixedBarWidth() ) {
         barWidth = ba.fixedBarWidth();
         groupWidth += barWidth;
 
         // Pending Michel set a min and max value for the groupWidth
         // related to the area.width
         if ( groupWidth < 0 )
             groupWidth = 0;
 
         if ( groupWidth  * rowCount > width )
             groupWidth = width / rowCount;
     }
 
     // maxLimit: allow the space between bars to be larger until area.width()
     // is covered by the groups.
     qreal maxLimit = rowCount * (groupWidth + ((colCount-1) * ba.fixedDataValueGap()) );
 
 
     //Pending Michel: FixMe
     if ( ba.useFixedDataValueGap() ) {
         if ( width > maxLimit )
             spaceBetweenBars += ba.fixedDataValueGap();
         else
             spaceBetweenBars = ((ctx->rectangle().width()/rowCount) - groupWidth)/(colCount-1);
     }
 
     if ( ba.useFixedValueBlockGap() )
         spaceBetweenGroups += ba.fixedValueBlockGap();
 
     calculateValueAndGapWidths( rowCount, colCount,groupWidth,
                                 barWidth, spaceBetweenBars, spaceBetweenGroups );
     
     LabelPaintCache lpc;
     const qreal maxValue = 100.0; // always 100 %
     qreal sumValues = 0;
     QVector <qreal > sumValuesVector;
 
     //calculate sum of values for each column and store
     for ( int row = 0; row < rowCount; ++row )
     {
         for ( int col = 0; col < colCount; ++col )
         {
             const CartesianDiagramDataCompressor::CachePosition position( row, col );
             const CartesianDiagramDataCompressor::DataPoint point = compressor().data( position );
             //if ( point.value > 0 )
             sumValues += qMax( point.value, -point.value );
             if ( col == colCount - 1 ) {
                 sumValuesVector <<  sumValues ;
                 sumValues = 0;
             }
         }
     }
 
     // calculate stacked percent value
     for ( int curRow = rowCount - 1; curRow >= 0; --curRow )
     {
         qreal offset = spaceBetweenGroups;
         if ( ba.useFixedBarWidth() )
             offset -= ba.fixedBarWidth();
         
         CartesianCoordinatePlane *plane = static_cast<CartesianCoordinatePlane*>(ctx->coordinatePlane());
         if (plane->isVerticalRangeReversed()) {
             if (offset > 0) {
                 offset = 0;
             }
         } else if ( offset < 0 ) {
             offset = 0;
         }
         for ( int col = 0; col < colCount ; ++col )
         {
             qreal threeDOffset = 0.0;
             const CartesianDiagramDataCompressor::CachePosition position( curRow, col );
             const CartesianDiagramDataCompressor::DataPoint p = compressor().data( position );
             QModelIndex sourceIndex = attributesModel()->mapToSource( p.index );
             ThreeDBarAttributes threeDAttrs = diagram()->threeDBarAttributes( sourceIndex );
 
             if ( threeDAttrs.isEnabled() ) {
                 if ( barWidth > 0 ) {
                     barWidth =  (width - ((offset+(threeDAttrs.depth()))*rowCount))/ rowCount;
                     threeDOffset = threeDAttrs.depth();
                 }
                 if ( barWidth <= 0 ) {
                     barWidth = 0.1;
                     threeDOffset = (width - (offset*rowCount))/ rowCount;
                 }
             } else {
                 barWidth = (width - (offset*rowCount))/ rowCount;
             }
 
             const qreal value = qMax( p.value, -p.value );
             qreal stackedValues = 0.0;
             qreal key = 0.0;
             
             // calculate stacked percent value
             // we only take in account positives values for now.
             for ( int k = col; k >= 0 ; --k )
             {
                 const CartesianDiagramDataCompressor::CachePosition position( curRow, k );
                 const CartesianDiagramDataCompressor::DataPoint point = compressor().data( position );
                 stackedValues += qMax( point.value, -point.value );
                 key = point.key;
             }
 
             QPointF point, previousPoint;
             if ( sumValuesVector.at( curRow ) != 0 && value > 0 ) {
                 QPointF dataPoint( ( stackedValues / sumValuesVector.at( curRow ) * maxValue ), key + 1 );
                 point = ctx->coordinatePlane()->translate( dataPoint );
                 point.ry() += offset / 2 + threeDOffset;
 
                 previousPoint = ctx->coordinatePlane()->translate( QPointF( ( ( stackedValues - value) / sumValuesVector.at( curRow ) * maxValue ), key + 1 ) );
             }
             
             const qreal barHeight = point.x() - previousPoint.x();
             
             point.setX( point.x() - barHeight );
 
             const QRectF rect = QRectF( point, QSizeF( barHeight, barWidth ) ).translated( 1, 0 );
             m_private->addLabel( &lpc, sourceIndex, nullptr, PositionPoints( rect ), Position::North,
                                  Position::South, value );
             paintBars( ctx, sourceIndex, rect, maxDepth );
         }
     }
     m_private->paintDataValueTextsAndMarkers( ctx, lpc, false );
 }