DisplayWidget.cpp

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/*
 * This file is part of ArmarX.
 *
 * ArmarX is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * ArmarX 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 for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 *
 * @package    <PACKAGE_NAME>::<CATEGORY>::DisplayWidget
 * @author     Stefan Reither ( stef dot reither at web dot de )
 * @date       2018
 * @copyright  http://www.gnu.org/licenses/gpl-2.0.txt
 *             GNU General Public License
 */
 
#include "DisplayWidget.h"
 
#include <QGridLayout>
 
#include <Inventor/events/SoLocation2Event.h>
#include <Inventor/events/SoMouseButtonEvent.h>
#include <Inventor/nodes/SoDrawStyle.h>
#include <Inventor/nodes/SoLineSet.h>
#include <Inventor/nodes/SoMaterial.h>
#include <Inventor/nodes/SoPickStyle.h>
#include <Inventor/nodes/SoSeparator.h>
#include <Inventor/nodes/SoVertexProperty.h>
 
namespace armarx
{
    DisplayWidget::DisplayWidget(QWidget* parent) : QWidget(parent)
    {
        this->setContentsMargins(1, 1, 1, 1);
 
        QGridLayout* grid = new QGridLayout(this);
        grid->setContentsMargins(0, 0, 0, 0);
        this->setLayout(grid);
        this->setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::MinimumExpanding);
 
        QWidget* view1 = new QWidget(this);
        view1->setMinimumSize(100, 100);
        view1->setSizePolicy(QSizePolicy::MinimumExpanding, QSizePolicy::MinimumExpanding);
 
        display = new Display(view1);
        display->show();
 
        grid->addWidget(view1, 0, 0, 1, 2);
    }
 
    DisplayWidget::~DisplayWidget()
    {
 
        delete display;
    }
 
    Display*
    DisplayWidget::getDisplay()
    {
        return display;
    }
 
    Display::Display(QWidget* widget) :
        SoQtExaminerViewer(widget),
        sceneRootNode(new SoSeparator),
        contentRootNode(new SoSeparator),
        camera(new SoPerspectiveCamera)
    {
        this->setBackgroundColor(SbColor(80 / 255.0f, 80 / 255.0f, 80 / 255.0f));
        this->setAccumulationBuffer(true);
        this->setHeadlight(true);
        this->setViewing(true);
        this->setDecoration(false);
 
        this->setTransparencyType(SoGLRenderAction::SORTED_OBJECT_BLEND);
        this->setFeedbackVisibility(true);
 
        //Create scene root node
        sceneRootNode->ref();
        this->setSceneGraph(sceneRootNode);
 
        //Add camera to scene
        sceneRootNode->addChild(camera);
        this->setCamera(camera);
 
        //Give camera standard position
        camera->position.setValue(SbVec3f(10, -10, 5));
        camera->pointAt(SbVec3f(0, 0, 0), SbVec3f(0, 0, 1));
 
        //Add content node
        sceneRootNode->addChild(contentRootNode);
 
        this->setViewing(false);
        this->setViewing(true);
    }
 
    Display::~Display()
    {
        if (sceneRootNode)
        {
            sceneRootNode->unref();
        }
    }
 
    SoSeparator*
    Display::getRootNode()
    {
        return contentRootNode;
    }
 
    void
    Display::cameraViewAll()
    {
        camera->viewAll(contentRootNode, SbViewportRegion());
    }
 
    void
    Display::cameraViewNode(SoNode* node, const float slack)
    {
        camera->viewAll(node, SbViewportRegion(), slack);
    }
 
    //    //Override the default navigation behaviour of the SoQtExaminerViewer
    //    SbBool Display::processSoEvent(const SoEvent* const event)
    //    {
    //        const SoType type(event->getTypeId());
 
    //        //Remapping mouse press events
    //        if (type.isDerivedFrom(SoMouseButtonEvent::getClassTypeId()))
    //        {
    //            SoMouseButtonEvent* const ev = (SoMouseButtonEvent*) event;
    //            const int button = ev->getButton();
    //            const SbBool press = ev->getState() == SoButtonEvent::DOWN ? TRUE : FALSE;
 
    //            //LEFT MOUSE BUTTON
    //            if (button == SoMouseButtonEvent::BUTTON1)
    //            {
    //                //Enable or disable viewing mode while BUTTON1 pressed
    //                if (press)
    //                {
    //                    if (!this->isViewing())
    //                    {
    //                        this->setViewing(true);
    //                    }
    //                }
    //                else
    //                {
    //                    if (this->isViewing())
    //                    {
    //                        this->setViewing(false);
    //                    }
    //                }
 
    //                if (this->isViewing())
    //                {
    //                    return SoQtExaminerViewer::processSoEvent(ev);
    //                }
    //            }
 
    //            //MOUSE WHEEL UP AND DOWN
    //            if (button == SoMouseButtonEvent::BUTTON4 || button == SoMouseButtonEvent::BUTTON5)
    //            {
    //                //Zooming is allowed, so just use it. We have to temporarily turn viewing mode
    //                // on to make SoQtExaminerViewer allow zooming.
 
    //                //Swap BUTTON4 and BUTTON5 because zooming out while scrolling up is just retarded
    //                ev->setButton(button == SoMouseButtonEvent::BUTTON4 ?
    //                              SoMouseButtonEvent::BUTTON5 : SoMouseButtonEvent::BUTTON4);
 
    //                //Zooming is allowed, so just pass it and temporarily set viewing mode on, if it is not already
    //                //(otherwise coin gives us warning messages...)
    //                if (!this->isViewing())
    //                {
    //                    if (!this->isViewing())
    //                    {
    //                        this->setViewing(true);
    //                    }
 
    //                    SoQtExaminerViewer::processSoEvent(ev);
 
    //                    if (this->isViewing())
    //                    {
    //                        this->setViewing(false);
    //                    }
    //                }
    //                else
    //                {
    //                    SoQtExaminerViewer::processSoEvent(ev);
    //                }
 
    //                return TRUE;
    //            }
    //        }
 
    //        // Keyboard handling
    //        if (type.isDerivedFrom(SoKeyboardEvent::getClassTypeId()))
    //        {
    //            const SoKeyboardEvent* const ev = (const SoKeyboardEvent*) event;
 
    //            //The escape key and super key (windows key) is used to switch between
    //            // viewing modes. We need to disable this behaviour completely.
 
    //            //65513 seems to be the super key, which is not available in the enum of keys in coin....
    //            if (ev->getKey() == SoKeyboardEvent::ESCAPE || ev->getKey() == 65513)
    //            {
    //                return TRUE;
    //            }
    //            else if (ev->getKey() == SoKeyboardEvent::S && ev->getState() == SoButtonEvent::DOWN)
    //            {
    //                if (!this->isSeekMode())
    //                {
    //                    if (!this->isViewing())
    //                    {
    //                        this->setViewing(true);
    //                    }
 
    //                    SoQtExaminerViewer::processSoEvent(ev);
    //                    this->setSeekTime(0.5);
    //                    this->seekToPoint(ev->getPosition());
 
    //                    if (this->isViewing())
    //                    {
    //                        this->setViewing(false);
    //                    }
    //                }
    //            }
    //            else if (ev->getKey() == SoKeyboardEvent::R && ev->getState() == SoButtonEvent::DOWN)
    //            {
    //                camera->viewAll(this->contentRootNode, SbViewportRegion());
    //            }
    //            else
    //            {
    //                SoQtExaminerViewer::processSoEvent(ev);
    //            }
 
    //            SoQtExaminerViewer::processSoEvent(ev);
    //        }
 
 
    //        if (type.isDerivedFrom(SoLocation2Event::getClassTypeId()))
    //        {
    //            return SoQtExaminerViewer::processSoEvent(event);
    //        }
 
    //        //YOU SHALL NOT PASS!
    //        return TRUE;
 
    //        return SoQtExaminerViewer::processSoEvent(event);
    //    }
} // namespace armarx