IVP13DChannelWidget.cxx

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/*
  Copyright (C) 2002-2025 CERN for the benefit of the ATLAS collaboration
*/

//                                                         //
//  Implementation of class IVP13DChannelWidget            //
//                                                         //
//  Author: Thomas Kittelmann <Thomas.Kittelmann@cern.ch>  //
//                                                         //
//  Initial version: April 2007                            //
//                                                         //
 
#include "VP1Base/IVP13DChannelWidget.h"
#include "VP1Base/VP1QtInventorUtils.h"
#include "VP1Base/VP1CameraHelper.h"
#include "VP1Base/VP1ExaminerViewer.h"
#include "VP1Base/VP1Msg.h"
 
#include <QPixmap>
#include <QPainter>
#include <QBuffer>
#include <QByteArray>
 
#include <Inventor/C/errors/debugerror.h>
#include "Inventor/Qt/SoQtRenderArea.h"
#include <Inventor/Qt/viewers/SoQtExaminerViewer.h>
#include "Inventor/nodes/SoNode.h"
#include <Inventor/actions/SoLineHighlightRenderAction.h>
#include <iostream>
 
class IVP13DChannelWidget::Imp {
public:
 
    //  typedef std::vector<SoQtRenderArea*> RenderAreaList;
    //  std::vector<SoQtRenderArea*>::iterator it, itE;
    typedef std::vector<VP1ExaminerViewer*> RenderAreaList;
    std::vector<VP1ExaminerViewer*>::iterator it, itE;
 
    RenderAreaList renderareas;
};
 
//___________________________________________________
IVP13DChannelWidget::IVP13DChannelWidget(const QString & name, const QString & information, const QString & contact_info)
: IVP1ChannelWidget(name,information,contact_info), m_d(new Imp)
{
    m_d->itE = m_d->renderareas.end();
 
}
 
//___________________________________________________
IVP13DChannelWidget::~IVP13DChannelWidget()
{
    setUpdatesEnabled(false);
    m_d->it = m_d->renderareas.begin();
    for (;m_d->it!=m_d->itE;++(m_d->it)) {
        //    SoQtRenderArea* ra = *(m_d->it);
        VP1ExaminerViewer* ra = *(m_d->it);
        ra->setAutoRedraw(false);//extra
        SoNode * root = ra->getSceneGraph();
        root->ref();
        ra->setSceneGraph(0);
        //     SoGLRenderAction * renderaction1 = ra->getGLRenderAction();
        //     SoGLRenderAction * renderaction2 = ra->getOverlayGLRenderAction();
        SoLineHighlightRenderAction * trick = new SoLineHighlightRenderAction();
        SoLineHighlightRenderAction * trick2 = new SoLineHighlightRenderAction();
        ra->setGLRenderAction(trick);
        ra->setOverlayGLRenderAction(trick2);
        //     ra->setGLRenderAction(0);
        //     ra->setOverlayGLRenderAction(0);
        delete ra;
        //     delete renderaction1;
        //     delete renderaction2;
        delete trick;
        delete trick2;
        root->unref();
    }
    delete m_d;
}
 
//___________________________________________________
void IVP13DChannelWidget::setUpdatesEnabled ( bool enable )
{
    m_d->it = m_d->renderareas.begin();
    for (;m_d->it!=m_d->itE;++(m_d->it)) {
        (*(m_d->it))->setAutoRedraw(enable);
    }
    IVP1ChannelWidget::setUpdatesEnabled(enable);
}
 
//___________________________________________________
//void IVP13DChannelWidget::registerRenderArea(SoQtRenderArea* ra)
void IVP13DChannelWidget::registerRenderArea(VP1ExaminerViewer* ra)
{
    if (!ra) {
        message("Error - tried to register NULL render area!");
        return;
    }
 
    VP1QtInventorUtils::ensureInitLineWidthAndPointSize(ra);
 
    m_d->renderareas.push_back(ra);
    m_d->itE = m_d->renderareas.end();
 
    //To make sure that it is the actual 3D widget that gets focus when
    //we e.g. click anywhere else in the widget where the render area is
    //placed within:
    if (ra->getParentWidget()&&ra->getWidget())
        ra->getParentWidget()->setFocusProxy(ra->getWidget());
}
 
//___________________________________________________
void IVP13DChannelWidget::goingToNextEvent()
{
    //Stop spinning and abort any ongoing animations:
    m_d->it = m_d->renderareas.begin();
    for (;m_d->it!=m_d->itE;++(m_d->it)) {
        VP1ExaminerViewer* ra = *(m_d->it);
        if (ra->getTypeId().isDerivedFrom(SoQtViewer::getClassTypeId())) {
            VP1CameraHelper::abortAnyCurrentZoom(static_cast<SoQtViewer*>(ra)->getCamera());
            if (ra->getTypeId().isDerivedFrom(SoQtExaminerViewer::getClassTypeId())) {
                if (static_cast<SoQtExaminerViewer*>(ra)->isAnimating())
                    static_cast<SoQtExaminerViewer*>(ra)->stopAnimating();
            }
        }
    }
}
 
//_______________________________________________________
QPixmap IVP13DChannelWidget::getSnapshot(bool transp, int width, bool /*batch*/)
{
    VP1Msg::messageVerbose("IVP13DChannelWidget::getSnapshot()");
 
    // TODO: check if transp and width can be used in this implementation of the method
    VP1Msg::messageVerbose("(currently, we are not using the values - transp: "+QString::number(transp)+" - width: "+QString::number(width)+")");
 
    //Unfortunately, the renderer's areas does not render properly by a
    //simple grabWidget. We remedy this the hard way...
    //  m_d->it = m_d->renderareas.begin();
    //  message("Have "+QString::number(m_d->renderareas.size())+" ras");
    //  for (;m_d->it!=m_d->itE;++(m_d->it)) {
    //    SoQtRenderArea* ra = *(m_d->it);
    //    if (ra->isDoubleBuffer()) message("doublebuffer");
    //    if (ra->isDrawToFrontBufferEnable()) message("isDrawToFrontBufferEnable");
    //    if (ra->isQuadBufferStereo()) message("isQuadBufferStereo");
    //    if (ra->getAccumulationBuffer()) message("getAccumulationBuffer");
    //    if (ra->isOverlayRender()) message("isOverlayRender");
    //    if (ra->isClearBeforeRender()) message("isClearBeforeRender");
    //    ra->render();
    //  }
    //  return QPixmap::grabWidget ( this );
 
    QPixmap pm(geometry().size());
 
    QPainter painter;
    painter.begin(&pm);
    painter.drawPixmap(0,0,this->grab ( ));
 
    m_d->it = m_d->renderareas.begin();
    for (;m_d->it!=m_d->itE;++(m_d->it)) {
        VP1ExaminerViewer* ra = *(m_d->it);
        QWidget * ra_w = ra->getNormalWidget();
        QPixmap pmra = VP1QtInventorUtils::renderToPixmap(ra, ra_w->geometry().width(),ra_w->geometry().height());
        if (pmra.isNull()) {
            message("Error rendering scene to QPixmap!");
            return QPixmap();
        }
        QPoint pos = ra_w->mapTo( this, QPoint(0,0) );
 
        painter.drawPixmap(pos.x(),pos.y(),pmra);
 
    }
    painter.end();
 
    return pm;
}
 
//_______________________________________________________
QByteArray IVP13DChannelWidget::saveState()
{
    // ===> Setup stream writing to a byteArray:
    QByteArray byteArray;
    QBuffer buffer(&byteArray);
    buffer.open(QIODevice::WriteOnly);
    QDataStream out(&buffer);
 
    // ===> Write Data:
 
    //Version & base state:
    out << (qint32)1; //version
    out << IVP1ChannelWidget::saveState();//Always include state info from the base class.
 
    // Data from this class:
 
    //Transparency types (version 0 saved as strings instead of ints):
    QList<int> transptypes;
    m_d->it = m_d->renderareas.begin();
    for (;m_d->it!=m_d->itE;++(m_d->it))
        transptypes << VP1QtInventorUtils::transparencyTypeToInt((*(m_d->it))->getTransparencyType());
    out << transptypes;
 
    //For any render area that can be casted as an SoQtViewer, we store the camera type and parameters.
    //SoQtViewer::toggleCameraType()
    //todo...
 
    // ===> Finish up:
    buffer.close();
    return byteArray;
 
}
 
//_______________________________________________________
void IVP13DChannelWidget::restoreFromState(QByteArray ba)
{
    // ===> Setup stream for getting the contents of the byteArray:
    QBuffer buffer(&ba);
    buffer.open(QIODevice::ReadOnly);
    QDataStream state(&buffer);
    // ===> Check version and pass on state info to base class:
    qint32 version;
    state >> version;
    if (version!=0&&version!=1) {
        message("Warning: State data in .vp1 file is in wrong format - ignoring!");
        return;
    }
 
    QByteArray basestate;
    state >> basestate;
    IVP1ChannelWidget::restoreFromState(std::move(basestate));
    // ===> Decode the state info:
 
    //Transparency types:
    if (version==0) {
        QStringList dummy;
        state >> dummy;
    } else {
        QList<int> transptypes;
        state >> transptypes;
        if (transptypes.count()!=static_cast<int>(m_d->renderareas.size())) {
            message("Warning: State data in .vp1 file is in wrong format - ignoring!");
            buffer.close();
            return;
        }
        m_d->it = m_d->renderareas.begin();
        for (;m_d->it!=m_d->itE;++(m_d->it))
            (*(m_d->it))->setTransparencyType(VP1QtInventorUtils::intToTransparencyType(transptypes.takeFirst()));
    }
 
    //Camera angles:
    //todo..
 
    // ===> Finish up:
    buffer.close();
}