File indexing completed on 2024-05-12 04:20:36

 /*
  * 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 "KChartRelativePosition.h"
 
 #include "KChartEnums.h"
 #include "KChartMeasure.h"
 #include "KChartPosition.h"
 #include "KChartAbstractArea.h"
 #include "KChartMath_p.h"
 
 #include <QWidget>
 #include <QLayout>
 
 using namespace KChart;
 
 class Q_DECL_HIDDEN RelativePosition::Private {
     friend class ::KChart::RelativePosition;
 public:
     Private();
     ~Private();
 
 private:
     QObject* area;
     PositionPoints points;
     Position position;
     Qt::Alignment alignment;
     Measure horizontalPadding;
     Measure verticalPadding;
     qreal rotation;
 };
 
 
 RelativePosition::Private::Private()
     : area( nullptr ),
       alignment( Qt::AlignCenter ),
       rotation( 0 )
 {
 
 }
 
 RelativePosition::Private::~Private()
 {}
 
 
 
 RelativePosition::RelativePosition()
     : _d( new Private )
 {
 
 }
 
 RelativePosition::RelativePosition( const RelativePosition& r )
     : _d( new Private( *r._d ) )
 {
 
 }
 
 RelativePosition & RelativePosition::operator=( const RelativePosition & other ) {
     RelativePosition copy( other );
     copy.swap( *this );
     return *this;
 }
 
 RelativePosition::~RelativePosition()
 {
     delete _d;
 }
 
 #define d d_func()
 
 void RelativePosition::setReferenceArea( QObject * area ) {
     d->area = area;
     if ( area )
         setReferencePoints( PositionPoints() );
 }
 
 QObject * RelativePosition::referenceArea() const {
     return d->area;
 }
 
 void RelativePosition::setReferencePoints( const PositionPoints& points ) {
     d->points = points;
     if ( !points.isNull() )
         setReferenceArea( nullptr );
 }
 const PositionPoints RelativePosition::referencePoints() const{
     return d->points;
 }
 
 void RelativePosition::setReferencePosition( Position pos ) {
     d->position = pos;
 }
 
 void RelativePosition::resetReferencePosition() {
     d->position = Position::Unknown;
 }
 
 Position RelativePosition::referencePosition() const {
     return d->position;
 }
 
 void RelativePosition::setAlignment( Qt::Alignment align ) {
     d->alignment = align;
 }
 
 Qt::Alignment RelativePosition::alignment() const {
     return d->alignment;
 }
 
 void RelativePosition::setHorizontalPadding( const Measure & pad ) {
     d->horizontalPadding = pad;
 }
 
 Measure RelativePosition::horizontalPadding() const {
     return d->horizontalPadding;
 }
 
 void RelativePosition::setVerticalPadding( const Measure & pad ) {
     d->verticalPadding = pad;
 }
 
 Measure RelativePosition::verticalPadding() const {
     return d->verticalPadding;
 }
 
 void RelativePosition::setRotation( qreal rot ) {
     d->rotation = rot;
 }
 
 qreal RelativePosition::rotation() const {
     return d->rotation;
 }
 
 
 const QPointF RelativePosition::referencePoint( qreal* polarDegrees ) const
 {
     bool useRect = ( d->area != nullptr );
     QRect rect;
     if ( useRect ) {
         if ( const QWidget* widget = qobject_cast< const QWidget* >( d->area ) ) {
             const QLayout* layout = widget->layout();
             rect = layout ? layout->geometry() : widget->geometry();
         } else if ( const AbstractArea* kdcArea = qobject_cast< const AbstractArea* >( d->area ) ) {
             rect = kdcArea->geometry();
         } else {
             useRect = false;
         }
     }
 
     QPointF pt;
     qreal angle = 0.0;
     if ( useRect ) {
         pt = PositionPoints( rect ).point( d->position );
     } else {
         pt = d->points.point( d->position );
         angle = d->points.degrees( d->position.value() );
     }
 
     if ( polarDegrees ) {
         *polarDegrees = angle;
     }
    return pt;
 }
 
 
 const QPointF RelativePosition::calculatedPoint( const QSizeF& autoSize ) const
 {
     const qreal dx = horizontalPadding().calculatedValue( autoSize, KChartEnums::MeasureOrientationHorizontal );
     const qreal dy = verticalPadding().calculatedValue( autoSize, KChartEnums::MeasureOrientationVertical );
 
     qreal polarDegrees;
     QPointF pt( referencePoint( &polarDegrees ) );
     if ( polarDegrees == 0.0 ) {
         pt += QPointF( dx, dy );
     } else {
         const qreal rad = DEGTORAD( polarDegrees);
         const qreal sinDeg = sin(rad);
         const qreal cosDeg = cos(rad);
         pt.setX( pt.x() + dx * cosDeg + dy * sinDeg );
         pt.setY( pt.y() - dx * sinDeg + dy * cosDeg );
     }
     return pt;
 }
 
 
 bool RelativePosition::operator==( const RelativePosition& r ) const
 {
     return  d->area              == r.referenceArea() &&
             d->position          == r.referencePosition() &&
             d->alignment         == r.alignment() &&
             d->horizontalPadding == r.horizontalPadding() &&
             d->verticalPadding   == r.verticalPadding() &&
             d->rotation          == r.rotation() ;
 }
 
 #undef d
 
 
 #if !defined(QT_NO_DEBUG_STREAM)
 QDebug operator<<(QDebug dbg, const KChart::RelativePosition& rp)
 {
     dbg << "KChart::RelativePosition("
     << "referencearea="<<rp.referenceArea()
     << "referenceposition="<<rp.referencePosition()
     << "alignment="<<rp.alignment()
     << "horizontalpadding="<<rp.horizontalPadding()
     << "verticalpadding="<<rp.verticalPadding()
     << "rotation="<<rp.rotation()
     << ")";
     return dbg;
 }
 #endif /* QT_NO_DEBUG_STREAM */