File indexing completed on 2024-05-12 04:20:35

 /*
  * 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 "KChartMeasure.h"
 
 #include <KChartAbstractArea.h>
 #include <KChartCartesianCoordinatePlane.h>
 #include <KChartTextAttributes.h>
 #include <KChartFrameAttributes.h>
 #include <KChartBackgroundAttributes.h>
 #include "KChartMath_p.h"
 
 #include <QWidget>
 
 namespace KChart {
 
 
 Measure::Measure()
   : mValue( 0.0 ),
     mMode( KChartEnums::MeasureCalculationModeAuto ),
     mArea( nullptr ),
     mOrientation( KChartEnums::MeasureOrientationAuto )
 {
     // this block left empty intentionally
 }
 
 Measure::Measure( qreal value,
     KChartEnums::MeasureCalculationMode mode,
     KChartEnums::MeasureOrientation orientation )
   : mValue( value ),
     mMode( mode ),
     mArea( nullptr ),
     mOrientation( orientation )
 {
     // this block left empty intentionally
 }
 
 Measure::Measure( const Measure& r )
   : mValue( r.value() ),
     mMode( r.calculationMode() ),
     mArea( r.referenceArea() ),
     mOrientation( r.referenceOrientation() )
 {
     // this block left empty intentionally
 }
 
 Measure & Measure::operator=( const Measure& r )
 {
     if ( this != &r ) {
         mValue = r.value();
         mMode  = r.calculationMode();
         mArea  = r.referenceArea();
         mOrientation = r.referenceOrientation();
     }
 
     return *this;
 }
 
 
 qreal Measure::calculatedValue( const QSizeF& autoSize,
                                 KChartEnums::MeasureOrientation autoOrientation) const
 {
     if ( mMode == KChartEnums::MeasureCalculationModeAbsolute ) {
         return mValue;
     } else {
         qreal value = 0.0;
         const QObject theAutoArea;
         const QObject* autoArea = &theAutoArea;
         const QObject* area = mArea ? mArea : autoArea;
         KChartEnums::MeasureOrientation orientation = mOrientation;
         switch ( mMode ) {
             case KChartEnums::MeasureCalculationModeAuto:
                 area = autoArea;
                 orientation = autoOrientation;
                 break;
             case KChartEnums::MeasureCalculationModeAutoArea:
                 area = autoArea;
                 break;
             case KChartEnums::MeasureCalculationModeAutoOrientation:
                 orientation = autoOrientation;
                 break;
             case KChartEnums::MeasureCalculationModeAbsolute: // fall through intended
             case KChartEnums::MeasureCalculationModeRelative:
                 break;
         }
         if ( area ) {
             QSizeF size;
             if ( area == autoArea )
                 size = autoSize;
             else
                 size = sizeOfArea( area );
             //qDebug() << ( area == autoArea ) << "size" << size;
             qreal referenceValue = 0;
             switch ( orientation ) {
                 case KChartEnums::MeasureOrientationAuto: // fall through intended
                 case KChartEnums::MeasureOrientationMinimum:
                     referenceValue = qMin( size.width(), size.height() );
                     break;
                 case KChartEnums::MeasureOrientationMaximum:
                     referenceValue = qMax( size.width(), size.height() );
                     break;
                 case KChartEnums::MeasureOrientationHorizontal:
                     referenceValue = size.width();
                     break;
                 case KChartEnums::MeasureOrientationVertical:
                     referenceValue = size.height();
                     break;
             }
             value = mValue / 1000.0 * referenceValue;
         }
         return value;
     }
 }
 
 
 qreal Measure::calculatedValue( const QObject* autoArea,
                                 KChartEnums::MeasureOrientation autoOrientation) const
 {
     return calculatedValue( sizeOfArea( autoArea ), autoOrientation);
 }
 
 
 const QSizeF Measure::sizeOfArea( const QObject* area ) const
 {
     QSizeF size;
     const CartesianCoordinatePlane* plane = dynamic_cast<const CartesianCoordinatePlane*>( area );
     if ( false ) {
         size = plane->visibleDiagramArea().size();
     } else {
         const AbstractArea* kdcArea = dynamic_cast<const AbstractArea*>(area);
         if ( kdcArea ) {
             size = kdcArea->geometry().size();
             //qDebug() << "Measure::sizeOfArea() found kdcArea with size" << size;
         } else {
             const QWidget* widget = dynamic_cast<const QWidget*>(area);
             if ( widget ) {
                 /* ATTENTION: Using the layout does not work: The Legend will never get the right size then!
                 const QLayout * layout = widget->layout();
                 if ( layout ) {
                     size = layout->geometry().size();
                     //qDebug() << "Measure::sizeOfArea() found widget with layout size" << size;
                 } else*/
                 {
                     size = widget->geometry().size();
                     //qDebug() << "Measure::sizeOfArea() found widget with size" << size;
                 }
             } else if ( mMode != KChartEnums::MeasureCalculationModeAbsolute ) {
                 size = QSizeF(1.0, 1.0);
                 //qDebug("Measure::sizeOfArea() got no valid area.");
             }
         }
     }
     const QPair< qreal, qreal > factors
             = GlobalMeasureScaling::instance()->currentFactors();
     return QSizeF(size.width() * factors.first, size.height() * factors.second);
 }
 
 
 bool Measure::operator==( const Measure& r ) const
 {
     return( mValue == r.value() &&
             mMode  == r.calculationMode() &&
             mArea  == r.referenceArea() &&
             mOrientation == r.referenceOrientation() );
 }
 
 GlobalMeasureScaling::GlobalMeasureScaling() :
     m_paintDevice( nullptr )
 {
     mFactors.push( qMakePair(qreal(1.0), qreal(1.0)) );
 }
 
 GlobalMeasureScaling::~GlobalMeasureScaling()
 {
     // this space left empty intentionally
 }
 
 GlobalMeasureScaling* GlobalMeasureScaling::instance()
 {
     static GlobalMeasureScaling instance;
     return &instance;
 }
 
 void GlobalMeasureScaling::setFactors(qreal factorX, qreal factorY)
 {
     instance()->mFactors.push( qMakePair(factorX, factorY) );
 }
 
 void GlobalMeasureScaling::resetFactors()
 {
     // never remove the initial (1.0. 1.0) setting
     if ( instance()->mFactors.count() > 1 )
         instance()->mFactors.pop();
 }
 
 const QPair< qreal, qreal > GlobalMeasureScaling::currentFactors()
 {
     return instance()->mFactors.top();
 }
 
 void GlobalMeasureScaling::setPaintDevice( QPaintDevice* paintDevice )
 {
     instance()->m_paintDevice = paintDevice;
 }
 
 QPaintDevice* GlobalMeasureScaling::paintDevice()
 {
     return instance()->m_paintDevice;
 }
 
 }
 
 #if !defined(QT_NO_DEBUG_STREAM)
 QDebug operator<<(QDebug dbg, const KChart::Measure& m)
 {
     dbg << "KChart::Measure("
         << "value="<<m.value()
         << "calculationmode="<<m.calculationMode()
         << "referencearea="<<m.referenceArea()
         << "referenceorientation="<<m.referenceOrientation()
         << ")";
     return dbg;
 }
 #endif /* QT_NO_DEBUG_STREAM */