File indexing completed on 2024-05-19 05:42:24

 // ct_lvtqtc_undo_move.cpp                                       -*-C++-*-
 
 /*
 // Copyright 2023 Codethink Ltd <codethink@codethink.co.uk>
 // SPDX-License-Identifier: Apache-2.0
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 //     http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 // See the License for the specific language governing permissions and
 // limitations under the License.
 */
 
 #include <ct_lvtqtc_graphicsscene.h>
 #include <ct_lvtqtc_graphicsview.h>
 #include <ct_lvtqtc_lakosentity.h>
 #include <ct_lvtqtc_undo_move.h>
 #include <oup/observable_unique_ptr.hpp>
 
 #include <QPointF>
 
 using namespace Codethink::lvtqtc;
 
 struct UndoMove::Private {
     oup::observer_ptr<GraphicsScene> scene;
     std::string nodeQualifiedName;
     QPointF originPos;
     QPointF newPos;
 };
 
 UndoMove::UndoMove(GraphicsScene *scene, const std::string& nodeId, const QPointF& origPos, const QPointF& newPos):
     d(std::make_unique<UndoMove::Private>(Private{scene->observer_from_this(), nodeId, origPos, newPos}))
 {
     setText(QObject::tr("Undo move"));
 }
 
 UndoMove::~UndoMove() = default;
 
 namespace {
 void updateScene(LakosEntity *entity)
 {
     // redraw all edges on the current position.
     entity->recursiveEdgeRelayout();
 
     // triggers a recalculation of the parent's boundaries.
     Q_EMIT entity->moving();
 
     // Tells the system tha the graph updated.
     Q_EMIT entity->graphUpdate();
 }
 } // namespace
 
 void UndoMove::undo()
 {
     if (d->scene == nullptr) {
         return;
     }
 
     auto *thisEntity = d->scene->entityByQualifiedName(d->nodeQualifiedName);
     if (thisEntity) {
         thisEntity->setPos(d->originPos);
         updateScene(thisEntity);
     }
 }
 
 void UndoMove::redo()
 {
     if (d->scene == nullptr) {
         return;
     }
 
     auto *thisEntity = d->scene->entityByQualifiedName(d->nodeQualifiedName);
     if (thisEntity) {
         thisEntity->setPos(d->newPos);
         updateScene(thisEntity);
     }
 }