File indexing completed on 2024-04-28 03:51:22

 /*.
     SPDX-FileCopyrightText: 2007 Vladimir Kuznetsov <ks.vladimir@gmail.com>
     SPDX-FileCopyrightText: 2014 Inge Wallin <inge@lysator.liu.se>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #include "worldgraphics.h"
 
 #include "settings.h"
 
 #include "worldmodel.h"
 #include "stepgraphicsitem.h"
 #include <stepcore/object.h>
 #include <stepcore/world.h>
 #include <stepcore/particle.h>
 
 #include <QGraphicsScene>
 #include <QGraphicsSceneMouseEvent>
 #include <QItemSelectionModel>
 #include <QMenu>
 
 #include <KActionCollection>
 #include <KLocalizedString>
 
 #include <cmath>
 
 // XXX
 #include "worldscene.h"
 
 void ItemCreator::showMessage(MessageFrame::Type type, const QString& text, MessageFrame::Flags flags)
 {
     if(Settings::showCreationTips()) {
         if(!(flags & MessageFrame::CloseButton) && !(flags & MessageFrame::CloseTimer)) {
             _messageId = _worldScene->changeMessage(_messageId, type, text, flags);
         } else {
             _worldScene->showMessage(type, text, flags);
         }
     }
 }
 
 void ItemCreator::closeMessage()
 {
     _worldScene->closeMessage(_messageId);
 }
 
 void ItemCreator::start()
 {
     showMessage(MessageFrame::Information,
             i18n("Click on the scene to create a %1", classNameTr()));
 }
 
 bool ItemCreator::sceneEvent(QEvent* event)
 {
     if(event->type() == QEvent::GraphicsSceneMousePress) {
         _worldModel->simulationPause();
 
         _worldModel->beginMacro(i18n("Create %1", _worldModel->newItemName(_className)));
         _item = _worldModel->createItem(_className); Q_ASSERT(_item != nullptr);
         const StepCore::MetaProperty* property = _item->metaObject()->property(QStringLiteral("position"));
         if(property != nullptr) {
             QGraphicsSceneMouseEvent* mouseEvent = static_cast<QGraphicsSceneMouseEvent*>(event);
             QPointF pos = mouseEvent->scenePos();
             QVariant vpos = QVariant::fromValue(StepGraphicsItem::pointToVector(pos));
             _worldModel->setProperty(_item, property, vpos);
         }
         _worldModel->addItem(_item);
 
         _worldModel->endMacro();
 
         _worldModel->selectionModel()->setCurrentIndex(_worldModel->objectIndex(_item),
                                                     QItemSelectionModel::ClearAndSelect);
 
         showMessage(MessageFrame::Information,
                 i18n("%1 named '%2' created", classNameTr(), _item->name()),
                 MessageFrame::CloseButton | MessageFrame::CloseTimer);
 
         setFinished();
         return true;
     }
     return false;
 }
 
 /////////////////////////////////////////////////////////////////////////////////////////
 
 void AttachableItemCreator::start()
 {
     if(_twoEnds)
         showMessage(MessageFrame::Information,
             i18n("Press left mouse button to position first end of a %1\n"
                  "then drag and release it to position the second end", classNameTr()));
     else
         showMessage(MessageFrame::Information,
             i18n("Click on the scene to create a %1", classNameTr()));
 }
 
 bool AttachableItemCreator::sceneEvent(QEvent* event)
 {
     QGraphicsSceneMouseEvent* mouseEvent = static_cast<QGraphicsSceneMouseEvent*>(event);
 
     if(event->type() == QEvent::GraphicsSceneMouseMove && _item == nullptr) {
         _worldScene->snapHighlight(mouseEvent->scenePos(), _snapFlags, _snapTypes);
         return false;
 
     } else if(event->type() == QEvent::GraphicsSceneMousePress && mouseEvent->button() == Qt::LeftButton) {
         QPointF pos = mouseEvent->scenePos();
         _worldModel->simulationPause();
         _worldModel->beginMacro(i18n("Create %1", _worldModel->newItemName(_className)));
         _item = _worldModel->createItem(className()); Q_ASSERT(_item != nullptr);
 
         if(_twoEnds) {
             _worldScene->snapItem(pos, _snapFlags, _snapTypes, StepGraphicsItem::Finished, _item, 1);
             _worldModel->setProperty(_item, QStringLiteral("localPosition2"),
                             QVariant::fromValue(StepGraphicsItem::pointToVector(pos)));
             _worldModel->setProperty(_item, QStringLiteral("restLength"), 0);
 
             showMessage(MessageFrame::Information,
                 i18n("Release left mouse button to position second end of the %1", classNameTr()));
         } else {
             _worldScene->snapItem(pos, _snapFlags, _snapTypes, StepGraphicsItem::Finished, _item);
             showMessage(MessageFrame::Information,
                 i18n("%1 named '%2' created", classNameTr(), _item->name()),
                 MessageFrame::CloseButton | MessageFrame::CloseTimer);
             _worldModel->endMacro();
             setFinished();
         }
         _worldModel->addItem(_item);
         _worldModel->selectionModel()->setCurrentIndex(_worldModel->objectIndex(_item),
                                                        QItemSelectionModel::ClearAndSelect);
         return true;
 
     } else if(event->type() == QEvent::GraphicsSceneMouseMove &&
                     (mouseEvent->buttons() & Qt::LeftButton) && _twoEnds) {
 
         QPointF pos = mouseEvent->scenePos();
         _worldScene->snapItem(pos, _snapFlags, _snapTypes, StepGraphicsItem::Moving, _item, 2);
 
         double length =
             (_item->metaObject()->property(QStringLiteral("position2"))->readVariant(_item).value<StepCore::Vector2d>() -
              _item->metaObject()->property(QStringLiteral("position1"))->readVariant(_item).value<StepCore::Vector2d>()).norm();
         _worldModel->setProperty(_item, QStringLiteral("restLength"), length);
         return true;
 
     } else if(event->type() == QEvent::GraphicsSceneMouseRelease &&
                     (mouseEvent->button() == Qt::LeftButton) && _twoEnds) {
 
         QPointF pos = mouseEvent->scenePos();
         _worldScene->snapItem(pos, _snapFlags, _snapTypes, StepGraphicsItem::Finished, _item, 2);
 
         double length =
             (_item->metaObject()->property(QStringLiteral("position2"))->readVariant(_item).value<StepCore::Vector2d>() -
              _item->metaObject()->property(QStringLiteral("position1"))->readVariant(_item).value<StepCore::Vector2d>()).norm();
         _worldModel->setProperty(_item, QStringLiteral("restLength"), length);
         _worldModel->endMacro();
 
         showMessage(MessageFrame::Information,
             i18n("%1 named '%2' created", classNameTr(), _item->name()),
             MessageFrame::CloseButton | MessageFrame::CloseTimer);
 
         setFinished();
         return true;
     }
 
     return false;
 }
 
 void AttachableItemCreator::abort()
 {
     _worldScene->snapClear();
 }
 
 /////////////////////////////////////////////////////////////////////////////////////////
 
 ItemMenuHandler::ItemMenuHandler(StepCore::Object* object, WorldModel* worldModel, QObject* parent)
     : QObject(parent)
     , _object(object)
     , _worldModel(worldModel)
 {
 }
 
 void ItemMenuHandler::populateMenu(QMenu* menu, KActionCollection* actions)
 {
     StepCore::Item* item = dynamic_cast<StepCore::Item*>(_object);
     
     if (item && item->world() != item) {
         menu->addAction(actions->action(QStringLiteral("edit_cut")));
         menu->addAction(actions->action(QStringLiteral("edit_copy")));
         menu->addAction(actions->action(QStringLiteral("edit_delete")));
     }
 }
 
 #include "moc_worldgraphics.cpp"