KDChart::AbstractProxyModel Class Reference

#include <KDChartAbstractProxyModel.h>

Inheritance diagram for KDChart::AbstractProxyModel:

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Collaboration diagram for KDChart::AbstractProxyModel:

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List of all members.

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Detailed Description

Base class for all proxy models used inside KD Chart.

Definition at line 43 of file KDChartAbstractProxyModel.h.

Public Member Functions
	AbstractProxyModel (QObject *parent=0)
	This is basically KDAbstractProxyModel, but only the bits that we really need from it.
QModelIndex	index (int row, int col, const QModelIndex &index) const
QModelIndex	mapFromSource (const QModelIndex &sourceIndex) const
QModelIndex	mapToSource (const QModelIndex &proxyIndex) const
QModelIndex	parent (const QModelIndex &index) const

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Constructor & Destructor Documentation

KDChart::AbstractProxyModel::AbstractProxyModel

(

QObject *

parent = 0

)

[explicit]

This is basically KDAbstractProxyModel, but only the bits that we really need from it.

Definition at line 41 of file KDChartAbstractProxyModel.cpp.

  : QAbstractProxyModel(parent) {}

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Member Function Documentation

QModelIndex KDChart::AbstractProxyModel::index	(	int	row,
		int	col,
		const QModelIndex &	index
	)			const

[reimplemented]

Definition at line 84 of file KDChartAbstractProxyModel.cpp.

References mapFromSource(), and mapToSource().

Referenced by KDChart::AttributesModel::setHeaderData(), and KDChart::AttributesModel::setModelData().

{
    Q_ASSERT(sourceModel());
    return mapFromSource(sourceModel()->index( row, col, mapToSource(index) ));
}

QModelIndex KDChart::AbstractProxyModel::mapFromSource

(

const QModelIndex &

sourceIndex

)

const

[reimplemented]

Definition at line 52 of file KDChartAbstractProxyModel.cpp.

Referenced by index(), and parent().

{
  if ( !sourceIndex.isValid() )
    return QModelIndex();
  //qDebug() << "sourceIndex.model()="<<sourceIndex.model();
  //qDebug() << "model()="<<sourceModel();
  Q_ASSERT( sourceIndex.model() == sourceModel() );

  // Create an index that preserves the internal pointer from the source;
  // this way AbstractProxyModel preserves the structure of the source model
  return createIndex( sourceIndex.row(), sourceIndex.column(), sourceIndex.internalPointer() );
}

QModelIndex KDChart::AbstractProxyModel::mapToSource

(

const QModelIndex &

proxyIndex

)

const

[reimplemented]

Definition at line 65 of file KDChartAbstractProxyModel.cpp.

Referenced by KDChart::AttributesModel::columnCount(), KDChart::AttributesModel::data(), index(), parent(), KDChart::AttributesModel::rowCount(), and KDChart::AttributesModel::setData().

{
  if ( !proxyIndex.isValid() )
    return QModelIndex();
  if( proxyIndex.model() != this )
    qDebug() << proxyIndex.model() << this;
  Q_ASSERT( proxyIndex.model() == this );
  // So here we need to create a source index which holds that internal pointer.
  // No way to pass it to sourceModel()->index... so we have to do the ugly way:
  QModelIndex sourceIndex;
  KDPrivateModelIndex* hack = reinterpret_cast<KDPrivateModelIndex*>(&sourceIndex);
  hack->r = proxyIndex.row();
  hack->c = proxyIndex.column();
  hack->p = proxyIndex.internalPointer();
  hack->m = sourceModel();
  Q_ASSERT( sourceIndex.isValid() );
  return sourceIndex;
}

QModelIndex KDChart::AbstractProxyModel::parent

(

const QModelIndex &

index

)

const

[reimplemented]

Definition at line 90 of file KDChartAbstractProxyModel.cpp.

References mapFromSource(), and mapToSource().

{
    Q_ASSERT(sourceModel());
    return mapFromSource(sourceModel()->parent( mapToSource(index) ));
}

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The documentation for this class was generated from the following files:

• KDChartAbstractProxyModel.h
• KDChartAbstractProxyModel.cpp

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