cxDicomModelNode.cpp

Go to the documentation of this file.

/*=========================================================================
This file is part of CustusX, an Image Guided Therapy Application.

Copyright (c) 2008-2014, SINTEF Department of Medical Technology
All rights reserved.

Redistribution and use in source and binary forms, with or without 
modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, 
   this list of conditions and the following disclaimer.

2. Redistributions in binary form must reproduce the above copyright notice, 
   this list of conditions and the following disclaimer in the documentation 
   and/or other materials provided with the distribution.

3. Neither the name of the copyright holder nor the names of its contributors 
   may be used to endorse or promote products derived from this software 
   without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 
AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE 
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 
SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 
CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 
OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
=========================================================================*/

#include "cxDicomModelNode.h"

namespace cx
{

NodePtr DicomModelNode::NullNode;

NodePtr DicomModelNode::getNullNode()
{
        if (!NullNode)
        {
                NullNode.reset(new NullDicomModelNode);
                NullNode->Parent = NullNode.get();
//              NullNode->Row = -1;
        }

        return NullNode;
}

NodePtr DicomModelNode::createNode(int row, DicomModelNode* parent, QSharedPointer<ctkDICOMDatabase> dataBase)
{
        if (!dataBase)
                return DicomModelNode::getNullNode();

        NodePtr node;
        if (row == -1)
        {
                node.reset(new RootDicomModelNode);
                node->Parent = DicomModelNode::getNullNode().get();
        }
        else
        {
                DICOMModel::IndexType type = DICOMModel::IndexType(parent->getType() + 1);

                if (type==DICOMModel::PatientType)
                        node.reset(new PatientDicomModelNode);
                if (type==DICOMModel::StudyType)
                        node.reset(new StudyDicomModelNode);
                if (type==DICOMModel::SeriesType)
                        node.reset(new SeriesDicomModelNode);

                parent->FetchedChildren.push_back(node);
                node->Parent = parent;
                node->UID = parent->ChildrenUID[row];
        }

//      node->Row = row;
        node->DataBase = dataBase;

        node->fillChildrenUids();

        return node;
}

DicomModelNode::DicomModelNode() :
//      Row(-1),
        Parent(0)
{

}

//---------------------------------------------------------
//---------------------------------------------------------
//---------------------------------------------------------

QStringList DicomModelNode::getHeaders() const
{
        QStringList retval;
        retval << "Name";
        retval << "Date";
        retval << "Modality";
        retval << "Images";
//      retval << "Info";
        return retval;
}

bool DicomModelNode::canFetchMore() const
{
        return FetchedChildren.size() != ChildrenUID.size();
}

bool DicomModelNode::hasChildren() const
{
        return !ChildrenUID.empty();
}

NodePtr DicomModelNode::getFetchedChildForRow(int row) const
{
        if (row < this->FetchedChildren.size())
                return this->FetchedChildren[row];
        return DicomModelNode::getNullNode();
}

DicomImageReaderPtr DicomModelNode::createReader() const
{
        QString filename = this->getFirstDICOMFilename();
        return DicomImageReader::createFromFile(filename);
}

QVariant DicomModelNode::getValue(int column) const
{
        if (!this->CachedValues.count(column))
        {
                QVariant value = this->getUncachedValue(column);
                this->CachedValues[column] = value;
        }

        return this->CachedValues[column];
}

QVariant DicomModelNode::getUncachedValue(int column) const
{
        if (column==0)
                return this->getName();
        if (column==1)
                return this->getTimestamp();
        if (column==2)
                return this->getModality();
        if (column==3)
                return this->getImageCount();
        return QVariant();
}

void DicomModelNode::removeChild(int index)
{
        if (index < ChildrenUID.size())
                ChildrenUID.removeAt(index);
        if (index < FetchedChildren.size())
        {
                std::vector<NodePtr>::iterator iter = FetchedChildren.begin();
                std::advance(iter, index);
                FetchedChildren.erase(iter);
        }
        CachedValues.erase(index);
}

int DicomModelNode::getRow() const
{
        const std::vector<NodePtr>& siblings = Parent->getFetchedChildren();
        for (int i=0; i<siblings.size(); ++i)
                if (siblings[i].get()==this)
                        return i;
        return -1;
}


//---------------------------------------------------------
//---------------------------------------------------------
//---------------------------------------------------------

void RootDicomModelNode::fillChildrenUids()
{
//      qDebug() << "using db " << DataBase.data();
//      qDebug() << "using patients " << DataBase->patients();

        this->ChildrenUID << DataBase->patients();
}

//---------------------------------------------------------
//---------------------------------------------------------
//---------------------------------------------------------

void PatientDicomModelNode::fillChildrenUids()
{
        this->ChildrenUID << DataBase->studiesForPatient(this->UID);
}

QVariant PatientDicomModelNode::getName() const
{
        DicomImageReaderPtr reader = this->createReader();
        if (!reader)
                return QVariant();
        QString retval = reader->getPatientName();
        if (retval.isEmpty())
                return this->getDefaultName();
        return retval;
}

QVariant PatientDicomModelNode::getTimestamp() const
{
        DicomImageReaderPtr reader = this->createReader();
        if (!reader)
                return QVariant();
        return reader->item()->GetElementAsDate(DCM_PatientBirthDate).toString(this->format_date());
}

QString PatientDicomModelNode::getFirstDICOMFilename() const
{
        QStringList studies = DataBase->studiesForPatient(this->UID);
        if (studies.empty())
                return "";
        QStringList series = DataBase->seriesForStudy(studies[0]);
        if (series.empty())
                return "";
        QStringList files = DataBase->filesForSeries(series[0]);
        if (files.empty())
                return "";
        return files[0];
}

//---------------------------------------------------------
//---------------------------------------------------------
//---------------------------------------------------------

void StudyDicomModelNode::fillChildrenUids()
{
        this->ChildrenUID << DataBase->seriesForStudy(this->UID);
}

QVariant StudyDicomModelNode::getName() const
{
        DicomImageReaderPtr reader = this->createReader();
        if (!reader)
                return QVariant();
        QString retval = reader->item()->GetElementAsString(DCM_StudyDescription);
        if (retval.isEmpty())
                return this->getDefaultName();
        return retval;
}

QVariant StudyDicomModelNode::getTimestamp() const
{
        DicomImageReaderPtr reader = this->createReader();
        if (!reader)
                return QVariant();
        QString date = reader->item()->GetElementAsDate(DCM_StudyDate).toString(this->format_date());
        QString time = reader->item()->GetElementAsTime(DCM_StudyTime).toString(this->format_time());
        return QString("%1 %2").arg(date).arg(time);
}

QString StudyDicomModelNode::getFirstDICOMFilename() const
{
        QStringList series = DataBase->seriesForStudy(this->UID);
        if (series.empty())
                return "";
        QStringList files = DataBase->filesForSeries(series[0]);
        if (files.empty())
                return "";
        return files[0];
}

//---------------------------------------------------------
//---------------------------------------------------------
//---------------------------------------------------------


QVariant SeriesDicomModelNode::getName() const
{
        DicomImageReaderPtr reader = this->createReader();
        if (!reader)
                return QVariant();
        QString retval = reader->item()->GetElementAsString(DCM_SeriesDescription);
        if (retval.isEmpty())
                return this->getDefaultName();
        return retval;
}

QVariant SeriesDicomModelNode::getTimestamp() const
{
        DicomImageReaderPtr reader = this->createReader();
        if (!reader)
                return QVariant();
        QString date = reader->item()->GetElementAsDate(DCM_SeriesDate).toString(this->format_date());
        QString time = reader->item()->GetElementAsTime(DCM_SeriesTime).toString(this->format_time());
        return QString("%1 %2").arg(date).arg(time);
}

QVariant SeriesDicomModelNode::getModality() const
{
        DicomImageReaderPtr reader = this->createReader();
        if (!reader)
                return QVariant();
        return reader->item()->GetElementAsString(DCM_Modality);
}

QVariant SeriesDicomModelNode::getImageCount() const
{
        return QString("%1").arg(this->getFrameCountForSeries(this->UID));
}

QString SeriesDicomModelNode::getFirstDICOMFilename() const
{
        QStringList files = DataBase->filesForSeries(this->UID);
        if (files.empty())
                return "";
        return files[0];
}

int SeriesDicomModelNode::getFrameCountForSeries(QString series) const
{
        QString seriesDescription;
        int frameCount = 0;
        QStringList files = DataBase->filesForSeries(series);
        for (unsigned i=0; i<files.size(); ++i)
        {
                DicomImageReaderPtr reader = DicomImageReader::createFromFile(files[i]);
                if (!reader)
                        continue;
                frameCount += reader->getNumberOfFrames();
                seriesDescription = reader->item()->GetElementAsString(DCM_SeriesDescription);
        }
        return frameCount;
}


} // namespace cx