ResInsight/ApplicationCode/UserInterface/RiuRmsNavigation.cpp

/////////////////////////////////////////////////////////////////////////////////
//
//  Copyright (C) 2015-     Statoil ASA
//  Copyright (C) 2015-     Ceetron Solutions AS
// 
//  ResInsight 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 3 of the License, or
//  (at your option) any later version.
// 
//  ResInsight 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 at <http://www.gnu.org/licenses/gpl.html> 
//  for more details.
//
/////////////////////////////////////////////////////////////////////////////////

#include "RiuRmsNavigation.h"
#include "cafViewer.h"
#include "cvfCamera.h"
#include "cvfViewport.h"
#include "cvfHitItemCollection.h"
#include "cvfRay.h"
#include "cvfManipulatorTrackball.h"

#include <QInputEvent>

//--------------------------------------------------------------------------------------------------
/// 
//--------------------------------------------------------------------------------------------------
RiuRmsNavigation::RiuRmsNavigation()
{

}

//--------------------------------------------------------------------------------------------------
/// 
//--------------------------------------------------------------------------------------------------
RiuRmsNavigation::~RiuRmsNavigation()
{

}

//--------------------------------------------------------------------------------------------------
/// 
//--------------------------------------------------------------------------------------------------
bool RiuRmsNavigation::handleInputEvent(QInputEvent* inputEvent)
{
    if (! inputEvent) return false;
    bool isEventHandled = false;
    switch (inputEvent->type())
    {
    case QEvent::MouseButtonPress:
        {
            QMouseEvent * me = static_cast<QMouseEvent*>( inputEvent);

            int translatedMousePosX, translatedMousePosY;
            cvfEventPos(me->x(), me->y(), &translatedMousePosX, &translatedMousePosY);

            if (me->button() == Qt::MidButton && isRotationEnabled())
            {
                cvf::HitItemCollection hic;
                bool hitSomething = m_viewer->rayPick(me->x(), me->y(), &hic);

                if (hitSomething)
                { 
                    cvf::Vec3d pointOfInterest = hic.firstItem()->intersectionPoint();
                    this->setPointOfInterest(pointOfInterest);
                }
                else
                {
                    initializeRotationCenter();
                }

                m_trackball->startNavigation(cvf::ManipulatorTrackball::ROTATE, translatedMousePosX, translatedMousePosY);
                m_isNavigating = true;
                m_hasMovedMouseDuringNavigation = false;
                isEventHandled = true;
            }
            else if (me->button() == Qt::RightButton)
            {
                if (me->modifiers() == Qt::NoModifier)
                {
                    m_trackball->startNavigation(cvf::ManipulatorTrackball::PAN, translatedMousePosX, translatedMousePosY);
                    m_isNavigating = true;
                    m_hasMovedMouseDuringNavigation = false;
                    isEventHandled = true;
                }
            }            
            else if (me->button() == Qt::LeftButton)
            {
                if (me->modifiers() == Qt::NoModifier)
                {
                    QMouseEvent* we = static_cast<QMouseEvent*> ( inputEvent);
                    m_lastPosX = we->x();
                    m_lastPosY = we->y();

                    m_zoomRay = createZoomRay(translatedMousePosX, translatedMousePosY);

                    m_isNavigating = true;
                    m_hasMovedMouseDuringNavigation = false;
                    isEventHandled = true;
                    m_isZooming = true;
                }
            }
            forcePointOfInterestUpdateDuringNextWheelZoom();
        }
        break;
    case QEvent::MouseButtonRelease: 
        {
            if (m_isNavigating)
            {
                QMouseEvent * me = static_cast<QMouseEvent*>( inputEvent);
                if (me->button() == Qt::RightButton || me->button() == Qt::MidButton )
                {
                    m_trackball->endNavigation();

                    m_isNavigating = false;
                    if (m_hasMovedMouseDuringNavigation) isEventHandled = true;
                    m_hasMovedMouseDuringNavigation = false;
                }
                else if ( me->button() == Qt::LeftButton )
                {
                    m_isZooming = false;

                    m_isNavigating = false;
                    if (m_hasMovedMouseDuringNavigation) isEventHandled = true;
                    m_hasMovedMouseDuringNavigation = false;
                }
            }
            forcePointOfInterestUpdateDuringNextWheelZoom();
        }
        break;
    case QEvent::MouseMove:
        {
            initializeRotationCenter();
            if (m_isRotCenterInitialized)
            {
                QMouseEvent * me = static_cast<QMouseEvent*>( inputEvent);

                int translatedMousePosX, translatedMousePosY;
                cvfEventPos(me->x(), me->y(), &translatedMousePosX, &translatedMousePosY);

                if (m_isNavigating)
                {
                    if (m_isZooming)
                    {
                        int delta = -3*(m_lastPosY - me->y());
                        this->zoomAlongRay(m_zoomRay.p(), delta);
                        m_lastPosX = me->x();
                        m_lastPosY = me->y();
                    }
                    else
                    {
                        bool needRedraw = m_trackball->updateNavigation(translatedMousePosX, translatedMousePosY);
                        if (needRedraw)
                        {
                            m_viewer->navigationPolicyUpdate();
                        }
                    }
                    isEventHandled = true;
                    m_hasMovedMouseDuringNavigation = true;
                }
            }
        }
        break;
    case QEvent::Wheel:
        {
            if (inputEvent->modifiers() == Qt::NoModifier)
            {
                QWheelEvent* we = static_cast<QWheelEvent*>(inputEvent);

                updatePointOfInterestDuringZoomIfNecessary(we->x(), we->y());

                if (m_isRotCenterInitialized)
                {
                    int translatedMousePosX, translatedMousePosY;
                    cvfEventPos(we->x(), we->y(), &translatedMousePosX, &translatedMousePosY);

                    cvf::ref<cvf::Ray> ray = createZoomRay(translatedMousePosX, translatedMousePosY);

                    zoomAlongRay(ray.p(), -we->delta());
                }
                isEventHandled = true;
            }
        }
        break;
    default:
        break;
    }

    if (isSupposedToConsumeEvents())
        return isEventHandled;
    else
        return false;
}