cxViewManager.cpp

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

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

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modification, are permitted provided that the following conditions are met:

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   this list of conditions and the following disclaimer.

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   this list of conditions and the following disclaimer in the documentation 
   and/or other materials provided with the distribution.

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   may be used to endorse or promote products derived from this software 
   without specific prior written permission.

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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
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=========================================================================*/

#include "cxViewManager.h"

#include <QGridLayout>
#include <QWidget>
#include <QTime>
#include <QAction>
#include <QtCore>
#include <qtextstream.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkImageData.h>
#include "vtkRenderer.h"
#include "vtkRenderWindow.h"
#include "cxLayoutData.h"
#include "boost/bind.hpp"

#include "cxVolumetricRep.h"
#include "cxLogger.h"
#include "cxXmlOptionItem.h"
#include "cxTrackingService.h"
#include "cxSlicePlanes3DRep.h"
#include "cxSliceProxy.h"
#include "cxViewGroup.h"
#include "cxViewWrapper.h"
#include "cxViewWrapper2D.h"
#include "cxViewWrapper3D.h"
#include "cxViewWrapperVideo.h"
#include "cxSettings.h"
#include "cxProfile.h"
#include "cxInteractiveCropper.h"
#include "vtkForwardDeclarations.h"
#include "cxInteractiveClipper.h"
#include "cxImage.h"
#include "cxCameraStyle.h"
#include "cxCyclicActionLogger.h"
#include "cxViewCollectionWidget.h"
#include "cxRenderLoop.h"
#include "cxLayoutRepository.h"

#include "cxVisServices.h"
#include "cxXMLNodeWrapper.h"
#include "cxCameraControl.h"
#include "cxNavigation.h"
#include "cxPatientModelService.h"

namespace cx
{

ViewManagerPtr ViewManager::create(VisServicesPtr backend)
{
        ViewManagerPtr retval;
        retval.reset(new ViewManager(backend));
        return retval;
}

ViewManager::ViewManager(VisServicesPtr backend) :
                                mGlobalObliqueOrientation(false)
{
        mBackend = backend;
        mRenderLoop.reset(new RenderLoop());
        connect(mRenderLoop.get(), SIGNAL(preRender()), this, SLOT(updateViews()));
        connect(mRenderLoop.get(), SIGNAL(fps(int)), this, SIGNAL(fps(int)));

        mSlicePlanesProxy.reset(new SlicePlanesProxy());
        mLayoutRepository.reset(new LayoutRepository());
        mCameraControl.reset(new CameraControl());

        mRenderLoop->setLogging(settings()->value("renderSpeedLogging").toBool());
        mRenderLoop->setSmartRender(settings()->value("smartRender", true).toBool());
        connect(settings(), SIGNAL(valueChangedFor(QString)), this, SLOT(settingsChangedSlot(QString)));

        const unsigned VIEW_GROUP_COUNT = 5; // set this to enough
        // initialize view groups:
        for (unsigned i = 0; i < VIEW_GROUP_COUNT; ++i)
        {
                ViewGroupPtr group(new ViewGroup(mBackend));
                mViewGroups.push_back(group);
        }

        // moved here from initialize() ... ensures object is fully callable after construction
        mCameraStyleInteractor.reset(new CameraStyleInteractor);

        mActiveLayout = QStringList() << "" << "";
        mLayoutWidgets.resize(mActiveLayout.size(), NULL);

        mInteractiveCropper.reset(new InteractiveCropper(mBackend->patient()->getActiveData()));
        connect(mInteractiveCropper.get(), SIGNAL(changed()), mRenderLoop.get(), SLOT(requestPreRenderSignal()));
        connect(this, SIGNAL(activeViewChanged()), this, SLOT(updateCameraStyleActions()));

    this->loadGlobalSettings();
        // connect to layoutrepo after load of global
        connect(mLayoutRepository.get(), &LayoutRepository::layoutChanged, this, &ViewManager::onLayoutRepositoryChanged);
        this->initializeGlobal2DZoom();
    this->initializeActiveView();

        // set start layout
        this->setActiveLayout("LAYOUT_3D_ACS_SINGLE", 0);

        mRenderLoop->setRenderingInterval(settings()->value("renderingInterval").toInt());
        this->enableRender(true);
}

ViewManager::~ViewManager()
{
}

void ViewManager::enableRender(bool val)
{
        if (val)
                mRenderLoop->start();
        else
                mRenderLoop->stop();

        emit renderingEnabledChanged();
}

bool ViewManager::renderingIsEnabled() const
{
        return mRenderLoop->isRunning();
}


void ViewManager::initializeGlobal2DZoom()
{
        mGlobal2DZoomVal = SyncedValue::create(1);

        for (unsigned i = 0; i < mViewGroups.size(); ++i)
                mViewGroups[i]->getData()->initializeGlobal2DZoom(mGlobal2DZoomVal);
}

void ViewManager::initializeActiveView()
{
        mActiveView = SyncedValue::create("");
        connect(mActiveView.get(), SIGNAL(changed()), this, SIGNAL(activeViewChanged()));

        for (unsigned i = 0; i < mViewGroups.size(); ++i)
                mViewGroups[i]->initializeActiveView(mActiveView);
}


NavigationPtr ViewManager::getNavigation(int group)
{
        mCameraControl->refreshView(this->get3DView(group));
        return NavigationPtr(new Navigation(mBackend, mCameraControl));
}

QWidget *ViewManager::getLayoutWidget(int index)
{
    if (index >= mLayoutWidgets.size())
        return NULL;
   return mLayoutWidgets[index];
}

QWidget *ViewManager::createLayoutWidget(QWidget* parent, int index)
{
        if (index >= mLayoutWidgets.size())
                return NULL;
//      CX_ASSERT(index < mLayoutWidgets.size()); // removed: must be allowed to iterate until NULL
        if (!mLayoutWidgets[index])
        {
        bool optimizedViews = settings()->value("optimizedViews").toBool();

                if (optimizedViews)
                {
//                      report("creating optimized wiew layout");
                        mLayoutWidgets[index] = ViewCollectionWidget::createOptimizedLayout();
                }
                else
                {
//                      report("creating classic wiew layout");
                        mLayoutWidgets[index] = ViewCollectionWidget::createViewWidgetLayout();
                }

                connect(mLayoutWidgets[index].data(), &QObject::destroyed, this, &ViewManager::layoutWidgetDestroyed);
                mRenderLoop->addLayout(mLayoutWidgets[index]);

                this->rebuildLayouts();
        }
        return mLayoutWidgets[index];
}

void ViewManager::layoutWidgetDestroyed(QObject* object)
{
//      ViewCollectionWidget* widget = dynamic_cast<ViewCollectionWidget*>(object);
        for (unsigned i=0; i<mLayoutWidgets.size(); ++i)
        {
                if (mLayoutWidgets[i] == object)
                        mLayoutWidgets[i] = NULL;
        }

        for (unsigned i = 0; i < mViewGroups.size(); ++i)
        {
                mViewGroups[i]->removeViews();
        }

        this->setActiveView("");
        mSlicePlanesProxy->clearViewports();

        QString uid = this->getActiveLayout();
        mActiveLayout[0] = ""; // hack: force trigger a change
        this->setActiveLayout(uid, 0);
}

void ViewManager::updateViews()
{
        for(unsigned i=0; i<mViewGroups.size(); ++i)
        {
                ViewGroupPtr group = mViewGroups[i];
                for (unsigned j=0; j<group->getWrappers().size(); ++j)
                        group->getWrappers()[j]->updateView();
        }
}

void ViewManager::settingsChangedSlot(QString key)
{
        if (key == "smartRender")
        {
                mRenderLoop->setSmartRender(settings()->value("smartRender", true).toBool());
        }
        if (key == "renderingInterval")
        {
                mRenderLoop->setRenderingInterval(settings()->value("renderingInterval").toInt());
        }
        if (key == "renderSpeedLogging")
        {
                mRenderLoop->setLogging(settings()->value("renderSpeedLogging").toBool());
        }
}

InteractiveCropperPtr ViewManager::getCropper()
{
        return mInteractiveCropper;
}

QString ViewManager::getActiveLayout(int widgetIndex) const
{
        CX_ASSERT(mActiveLayout.size() > widgetIndex);
        return mActiveLayout[widgetIndex];
}

QString ViewManager::getActiveView() const
{
        return mActiveView->get().value<QString>();
}

void ViewManager::setActiveView(QString uid)
{
        mActiveView->set(uid);
}

int ViewManager::getActiveViewGroup() const
{
        int retval = -1;
        QString activeView = mActiveView->value<QString>();

        for (unsigned i = 0; i < mViewGroups.size(); ++i)
        {
                ViewWrapperPtr viewWrapper = mViewGroups[i]->getViewWrapperFromViewUid(activeView);
                if (viewWrapper)
                        retval = i;
        }

        return retval;
}

void ViewManager::addXml(QDomNode& parentNode)
{
        XMLNodeAdder parent(parentNode);
        XMLNodeAdder base(parent.addElement("viewManager"));

        base.addTextToElement("global2DZoom", qstring_cast(mGlobal2DZoomVal->get().toDouble()));

        QDomElement slicePlanes3DNode = base.addElement("slicePlanes3D");
        slicePlanes3DNode.setAttribute("use", mSlicePlanesProxy->getVisible());
        slicePlanes3DNode.setAttribute("opaque", mSlicePlanesProxy->getDrawPlanes());

        XMLNodeAdder viewGroupsNode(base.addElement("viewGroups"));
        for (unsigned i = 0; i < mViewGroups.size(); ++i)
        {
                QDomElement viewGroupNode = viewGroupsNode.addElement("viewGroup");
                viewGroupNode.setAttribute("index", i);
                mViewGroups[i]->addXml(viewGroupNode);
        }
}

void ViewManager::parseXml(QDomNode viewmanagerNode)
{
        XMLNodeParser base(viewmanagerNode);

        QString clippedImage = base.parseTextFromElement("clippedImage");

        base.parseDoubleFromElementWithDefault("global2DZoom", mGlobal2DZoomVal->get().toDouble());

        QDomElement slicePlanes3DNode = base.parseElement("slicePlanes3D");
        mSlicePlanesProxy->setVisible(slicePlanes3DNode.attribute("use").toInt());
        mSlicePlanesProxy->setDrawPlanes(slicePlanes3DNode.attribute("opaque").toInt());

        QDomElement viewgroups = base.parseElement("viewGroups");
        QDomNode viewgroup = viewgroups.firstChild();
        while (!viewgroup.isNull())
        {
                if (viewgroup.toElement().tagName() != "viewGroup")
                {
                        viewgroup = viewgroup.nextSibling();
                        continue;
                }
                int index = viewgroup.toElement().attribute("index").toInt();

                if (index < 0 || index >= int(mViewGroups.size()))
                {
                        viewgroup = viewgroup.nextSibling();
                        continue;
                }

                mViewGroups[index]->parseXml(viewgroup);

                viewgroup = viewgroup.nextSibling();
        }
}

void ViewManager::clear()
{
        for (unsigned i = 0; i < mViewGroups.size(); ++i)
        {
                mViewGroups[i]->clearPatientData();
        }
}

ViewPtr ViewManager::get3DView(int group, int index)
{
        int count = 0;
        std::vector<ViewPtr> views = mViewGroups[group]->getViews();
        for (unsigned i = 0; i < views.size(); ++i)
        {
                if(!views[i])
                        continue;
                if (views[i]->getType()!=View::VIEW_3D)
                        continue;
                if (index == count++)
                        return views[i];
        }
        return ViewPtr();
}


void ViewManager::deactivateCurrentLayout()
{
        for (unsigned i=0; i<mLayoutWidgets.size(); ++i)
        {
                if (mLayoutWidgets[i])
                        mLayoutWidgets[i]->clearViews();
        }

        for (unsigned i = 0; i < mViewGroups.size(); ++i)
        {
                mViewGroups[i]->removeViews();
        }

        this->setActiveView("");
        mSlicePlanesProxy->clearViewports();
}

ViewGroupDataPtr ViewManager::getViewGroup(int groupIdx) const
{
        if (( groupIdx>=0 )&&( groupIdx < mViewGroups.size() ))
                return mViewGroups[groupIdx]->getData();
        return ViewGroupDataPtr();
}

void ViewManager::setActiveLayout(const QString& layout, int widgetIndex)
{
        if(!mLayoutRepository->exists(layout))
                return;

        CX_ASSERT(mActiveLayout.size() > widgetIndex);

        if (mActiveLayout[widgetIndex] == layout)
                return;

        mActiveLayout[widgetIndex] = layout;

        this->rebuildLayouts();

        if (!mViewGroups[0]->getViews().empty())
                this->setActiveView(mViewGroups[0]->getViews()[0]->getUid());

        emit activeLayoutChanged();

        QString layoutName = mLayoutRepository->get(layout).getName();
        report(QString("Layout %1 changed to %2").arg(widgetIndex).arg(layoutName));
}

void ViewManager::rebuildLayouts()
{
        this->deactivateCurrentLayout();

        for (unsigned i=0; i<mLayoutWidgets.size(); ++i)
        {
                LayoutData next = mLayoutRepository->get(mActiveLayout[i]);
                if (mLayoutWidgets[i] && !next.getUid().isEmpty())
                        this->activateViews(mLayoutWidgets[i], next);
        }

        this->setSlicePlanesProxyInViewsUpTo2DViewgroup();

        mCameraControl->refreshView(this->get3DView());
}

void ViewManager::setSlicePlanesProxyInViewsUpTo2DViewgroup()
{
        // Set the same proxy in all wrappers, but stop adding after the
        // first group with 2D views are found.
        // This works well _provided_ that the 3D view is in the first group.
        for (unsigned i = 0; i < mViewGroups.size(); ++i)
        {
                bool foundSlice = false;
                std::vector<ViewWrapperPtr> wrappers = mViewGroups[i]->getWrappers();
                for (unsigned j = 0; j < wrappers.size(); ++j)
                {
                        wrappers[j]->setSlicePlanesProxy(mSlicePlanesProxy);
                        foundSlice = foundSlice || wrappers[j]->getView()->getType() == View::VIEW_2D;
                }
                if (foundSlice)
                        break;
        }
}
void ViewManager::activateViews(ViewCollectionWidget *widget, LayoutData next)
{
        if (!widget)
                return;

        for (LayoutData::iterator iter = next.begin(); iter != next.end(); ++iter)
                this->activateView(widget, *iter);
}

void ViewManager::setRenderingInterval(int interval)
{
        mRenderLoop->setRenderingInterval(interval);
}

void ViewManager::activateView(ViewCollectionWidget* widget, LayoutViewData viewData)
{
        if (!viewData.isValid())
                return;

        ViewPtr view = widget->addView(viewData.mType, viewData.mRegion);

        vtkRenderWindowInteractorPtr interactor = view->getRenderWindow()->GetInteractor();
        //Turn off rendering in vtkRenderWindowInteractor
        interactor->EnableRenderOff();
        //Increase the StillUpdateRate in the vtkRenderWindowInteractor (default is 0.0001 images per second)
        double rate = settings()->value("stillUpdateRate").value<double>();
        interactor->SetStillUpdateRate(rate);
        // Set the same value when moving (seems counterintuitive, but for us, moving isnt really special.
        // The real challenge is updating while the tracking is active, and this uses the still update rate.
        interactor->SetDesiredUpdateRate(rate);

//      mRenderLoop->addView(view);
        ViewWrapperPtr wrapper = this->createViewWrapper(view, viewData);
        mViewGroups[viewData.mGroup]->addView(wrapper);
//      widget->showViews();
}

ViewWrapperPtr ViewManager::createViewWrapper(ViewPtr view, LayoutViewData viewData)
{
        if (viewData.mType == View::VIEW_2D)
        {
                ViewWrapper2DPtr wrapper(new ViewWrapper2D(view, mBackend));
                wrapper->initializePlane(viewData.mPlane);
                connect(wrapper.get(), &ViewWrapper2D::pointSampled, this, &ViewManager::pointSampled);
                return wrapper;
        }
        else if (viewData.mType == View::VIEW_3D)
        {

                ViewWrapper3DPtr wrapper(new ViewWrapper3D(viewData.mGroup + 1, view, mBackend));
                if (viewData.mGroup == 0)
                        mInteractiveCropper->setView(view);
                return wrapper;
        }
        else if (viewData.mType == View::VIEW_REAL_TIME)
        {
                ViewWrapperVideoPtr wrapper(new ViewWrapperVideo(view, mBackend));
                return wrapper;
        }
        else
        {
                reportError(QString("Unknown view type %1").arg(qstring_cast(viewData.mType)));
        }

        return ViewWrapperPtr();
}

LayoutRepositoryPtr ViewManager::getLayoutRepository()
{
        return mLayoutRepository;
}

void ViewManager::onLayoutRepositoryChanged(QString uid)
{
        this->saveGlobalSettings();

        bool activeChange = mActiveLayout[0] == uid;
        if (activeChange)
        {
                mActiveLayout[0] = ""; // hack: force trigger a change
                this->setActiveLayout(uid, 0);
        }
}

void ViewManager::loadGlobalSettings()
{
        XmlOptionFile file = profile()->getXmlSettings().descend("viewmanager");
        mLayoutRepository->load(file);
}

void ViewManager::saveGlobalSettings()
{
        XmlOptionFile file = profile()->getXmlSettings().descend("viewmanager");
        mLayoutRepository->save(file);
        file.save();
}

QActionGroup* ViewManager::getInteractorStyleActionGroup()
{
        return mCameraStyleInteractor->getInteractorStyleActionGroup();
}

void ViewManager::updateCameraStyleActions()
{
        int active = this->getActiveViewGroup();
        int index = this->findGroupContaining3DViewGivenGuess(active);

        if (index<0)
        {
                mCameraStyleInteractor->connectCameraStyle(CameraStylePtr());
        }
        else
        {
                ViewGroupPtr group = this->getViewGroups()[index];
                mCameraStyleInteractor->connectCameraStyle(group->getCameraStyle());
                mCameraControl->setView(this->get3DView(index, 0));
        }

}

int ViewManager::findGroupContaining3DViewGivenGuess(int preferredGroup)
{
        if (preferredGroup>=0)
                if (mViewGroups[preferredGroup]->contains3DView())
                        return preferredGroup;

        for (unsigned i=0; i<mViewGroups.size(); ++i)
                if (mViewGroups[i]->contains3DView())
                        return i;
        return -1;
}

void ViewManager::autoShowData(DataPtr data)
{
        if (settings()->value("Automation/autoShowNewData").toBool() && data)
        {
                this->autoShowInViewGroups(data);
                this->autoResetCameraToSuperiorView();
                this->autoCenterToImageCenter();
        }
}

void ViewManager::autoShowInViewGroups(DataPtr data)
{
        QList<unsigned> showInViewGroups = this->getViewGroupsToAutoShowIn();
        foreach (unsigned i, showInViewGroups)
                this->getViewGroups()[i]->getData()->addDataSorted(data->getUid());
}

QList<unsigned> ViewManager::getViewGroupsToAutoShowIn()
{
        QList<unsigned> showInViewGroups;
        if(settings()->value("Automation/autoShowNewDataInViewGroup0").toBool())
                showInViewGroups  << 0;
        if(settings()->value("Automation/autoShowNewDataInViewGroup1").toBool())
                showInViewGroups  << 1;
        if(settings()->value("Automation/autoShowNewDataInViewGroup2").toBool())
                showInViewGroups  << 2;
        if(settings()->value("Automation/autoShowNewDataInViewGroup3").toBool())
                showInViewGroups  << 3;
        if(settings()->value("Automation/autoShowNewDataInViewGroup4").toBool())
                showInViewGroups  << 4;
        return showInViewGroups;
}

void ViewManager::autoResetCameraToSuperiorView()
{
        if(settings()->value("Automation/autoResetCameraToSuperiorViewWhenAutoShowingNewData").toBool())
        {
                for (unsigned i=0; i<mViewGroups.size(); ++i)
                        if (mViewGroups[i]->contains3DView())
                        {
                                mCameraControl->setView(this->get3DView(i));
                                mCameraControl->setSuperiorView();
                        }
        }
}

void ViewManager::autoCenterToImageCenter()
{
        if(settings()->value("Automation/autoCenterToImageCenterViewWhenAutoShowingNewData").toBool())
        {
                QList<unsigned> showInViewGroups = this->getViewGroupsToAutoShowIn();

                foreach (unsigned i, showInViewGroups)
                        this->centerToImageCenterInViewGroup(i);
        }
}

void ViewManager::centerToImageCenterInViewGroup(unsigned groupNr)
{
        this->getNavigation(groupNr)->centerToDataInViewGroup(this->getViewGroup(groupNr));
}

CyclicActionLoggerPtr ViewManager::getRenderTimer()
{
        return mRenderLoop->getRenderTimer();
}

void ViewManager::setCameraStyle(CAMERA_STYLE_TYPE style, int groupIdx)
{
        //Set active view before changing camerastyle
        if (!mViewGroups[groupIdx]->getViews().empty())
                this->setActiveView(mViewGroups[groupIdx]->getViews()[0]->getUid());

        QList<QAction*> actions = this->getInteractorStyleActionGroup()->actions();
        for(int i = 0; i < actions.size(); ++i)
        {
                if (actions[i]->data().toString() == enum2string(style))
                        actions[i]->trigger();
        }
}

void ViewManager::addDefaultLayout(LayoutData layoutData)
{
        mLayoutRepository->addDefault(layoutData);
}

} //namespace cx