File indexing completed on 2024-05-12 15:54:10

 /*
  * Copyright (C) 2001-2015 Klaralvdalens Datakonsult AB.  All rights reserved.
  *
  * This file is part of the KD Chart library.
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of the GNU General Public License as
  * published by the Free Software Foundation; either version 2 of
  * the License, or (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program.  If not, see <https://www.gnu.org/licenses/>.
  */
 
 #include "KChartAbstractAxis.h"
 #include "KChartAbstractAxis_p.h"
 #include "KChartAbstractDiagram.h"
 #include "KChartAbstractCartesianDiagram.h"
 #include "KChartEnums.h"
 #include "KChartMeasure.h"
 #include "KChartMath_p.h"
 
 using namespace KChart;
 
 #define d d_func()
 
 AbstractAxis::Private::Private( AbstractDiagram* diagram, AbstractAxis* axis )
     : observer( nullptr )
     , mDiagram( diagram )
     , mAxis( axis )
 {
     // Note: We do NOT call setDiagram( diagram, axis );
     //       but it is called in AbstractAxis::delayedInit() instead!
 }
 
 AbstractAxis::Private::~Private()
 {
     delete observer;
     observer = nullptr;
 }
 
 bool AbstractAxis::Private::setDiagram( AbstractDiagram* diagram_, bool delayedInit )
 {
     AbstractDiagram* diagram = delayedInit ? mDiagram : diagram_;
     if ( delayedInit ) {
         mDiagram = nullptr;
     }
 
     // do not set a diagram again that was already set
     if ( diagram &&
         ((diagram == mDiagram) || secondaryDiagrams.contains( diagram )) )
         return false;
 
     bool bNewDiagramStored = false;
     if ( ! mDiagram ) {
         mDiagram = diagram;
         delete observer;
         if ( mDiagram ) {
             observer = new DiagramObserver( mDiagram, mAxis );
             const bool con = connect( observer, SIGNAL(diagramDataChanged(AbstractDiagram*)),
                     mAxis, SIGNAL(coordinateSystemChanged()) );
             Q_UNUSED( con )
             Q_ASSERT( con );
             bNewDiagramStored = true;
         } else {
             observer = nullptr;
         }
     } else {
         if ( diagram )
             secondaryDiagrams.enqueue( diagram );
     }
     return bNewDiagramStored;
 }
 
 void AbstractAxis::Private::unsetDiagram( AbstractDiagram* diagram )
 {
     if ( diagram == mDiagram ) {
         mDiagram = nullptr;
         delete observer;
         observer = nullptr;
     } else {
         secondaryDiagrams.removeAll( diagram );
     }
     if ( !secondaryDiagrams.isEmpty() ) {
         AbstractDiagram *nextDiagram = secondaryDiagrams.dequeue();
         setDiagram( nextDiagram );
     }
 }
 
 bool AbstractAxis::Private::hasDiagram( AbstractDiagram* diagram ) const
 {
     return diagram == mDiagram || secondaryDiagrams.contains( diagram );
 }
 
 void AbstractAxis::Private::updateLayouts()
 {
     if ( CartesianAxis* cartesianAxis = qobject_cast< CartesianAxis* >( mAxis ) ) {
         cartesianAxis->layoutPlanes();
     } else {
         mAxis->update();
     }
 }
 
 AbstractAxis::AbstractAxis ( AbstractDiagram* diagram )
     : AbstractArea( new Private( diagram, this ) )
 {
     init();
     QTimer::singleShot(0, this, SLOT(delayedInit()));
 }
 
 AbstractAxis::~AbstractAxis()
 {
     d->mDiagram = nullptr;
     d->secondaryDiagrams.clear();
 }
 
 
 void AbstractAxis::init()
 {
     Measure m( 14, KChartEnums::MeasureCalculationModeAuto, KChartEnums::MeasureOrientationAuto );
     d->textAttributes.setFontSize( m );
     m.setValue( 6 );
     m.setCalculationMode( KChartEnums::MeasureCalculationModeAbsolute );
     d->textAttributes.setMinimalFontSize( m );
     if ( d->diagram() )
         createObserver( d->diagram() );
 }
 
 void AbstractAxis::delayedInit()
 {
     // We call setDiagram() here, because the c'tor of Private
     // only has stored the pointers, but it did not call setDiagram().
     if ( d )
         d->setDiagram( nullptr, true /* delayedInit */ );
 }
 
 bool AbstractAxis::compare( const AbstractAxis* other ) const
 {
     if ( other == this ) {
         return true;
     }
     if ( !other ) {
         return false;
     }
 
     return  ( static_cast<const AbstractAreaBase*>(this)->compare( other ) ) &&
             (textAttributes() == other->textAttributes()) &&
             (labels()         == other->labels()) &&
             (shortLabels()    == other->shortLabels());
 }
 
 
 const QString AbstractAxis::customizedLabel( const QString& label ) const
 {
     return label;
 }
 
 
 void AbstractAxis::createObserver( AbstractDiagram* diagram )
 {
     d->setDiagram( diagram );
 }
 
 void AbstractAxis::deleteObserver( AbstractDiagram* diagram )
 {
     d->unsetDiagram( diagram );
 }
 
 void AbstractAxis::connectSignals()
 {
     if ( d->observer ) {
         const bool con = connect( d->observer, SIGNAL(diagramDataChanged(AbstractDiagram*)),
                 this, SIGNAL(coordinateSystemChanged()) );
         Q_UNUSED( con );
         Q_ASSERT( con );
     }
 }
 
 void AbstractAxis::setTextAttributes( const TextAttributes &a )
 {
     if ( d->textAttributes == a )
         return;
 
     d->textAttributes = a;
     d->updateLayouts();
 }
 
 TextAttributes AbstractAxis::textAttributes() const
 {
     return d->textAttributes;
 }
 
 
 void AbstractAxis::setRulerAttributes( const RulerAttributes &a )
 {
     d->rulerAttributes = a;
     d->updateLayouts();
 }
 
 RulerAttributes AbstractAxis::rulerAttributes() const
 {
     return d->rulerAttributes;
 }
 
 void AbstractAxis::setLabels( const QStringList& list )
 {
     if ( d->hardLabels == list )
         return;
 
     d->hardLabels = list;
     d->updateLayouts();
 }
 
 QStringList AbstractAxis::labels() const
 {
     return d->hardLabels;
 }
 
 void AbstractAxis::setShortLabels( const QStringList& list )
 {
     if ( d->hardShortLabels == list )
         return;
 
     d->hardShortLabels = list;
     d->updateLayouts();
 }
 
 QStringList AbstractAxis::shortLabels() const
 {
     return d->hardShortLabels;
 }
 
 const AbstractCoordinatePlane* AbstractAxis::coordinatePlane() const
 {
     if ( d->diagram() )
         return d->diagram()->coordinatePlane();
     return nullptr;
 }
 
 const AbstractDiagram * KChart::AbstractAxis::diagram() const
 {
     return d->diagram();
 }
 
 bool KChart::AbstractAxis::observedBy( AbstractDiagram * diagram ) const
 {
     return d->hasDiagram( diagram );
 }
 
 void KChart::AbstractAxis::update()
 {
     if ( d->diagram() )
         d->diagram()->update();
 }