File indexing completed on 2025-01-05 04:14:56

 /* This file is part of the TikZKit project.
  *
  * Copyright (C) 2013-2014 Dominik Haumann <dhaumann@kde.org>
  *
  * This library is free software; you can redistribute it and/or modify
  * it under the terms of the GNU Library General Public License as published
  * by the Free Software Foundation, either version 2 of the License, or
  * (at your option) any later version.
  *
  * This library 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 Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, see
  * <http://www.gnu.org/licenses/>.
  */
 
 #include "EdgePath.h"
 #include "UndoSetEdgePos.h"
 #include "Node.h"
 #include "Document.h"
 
 namespace tikz {
 namespace core {
 
 class EdgePathPrivate
 {
     public:
         EdgePathPrivate(Document * doc)
             : start(doc)
             , end(doc)
         {}
 
         // the element type of this edge
         PathType type;
 
         // start meta node this edge points to
         MetaPos start;
 
         // target/end meta node this edge points to
         MetaPos end;
 };
 
 EdgePath::EdgePath(PathType type, const Uid & uid)
     : Path(uid)
     , d(new EdgePathPrivate(uid.document()))
 {
     d->type = type;
 
     connect(d->start.notificationObject(), SIGNAL(changed(tikz::core::MetaPos*)), this, SLOT(emitChangedIfNeeded()));
     connect(d->end.notificationObject(), SIGNAL(changed(tikz::core::MetaPos*)), this, SLOT(emitChangedIfNeeded()));
 }
 
 EdgePath::~EdgePath()
 {
     delete d;
 }
 
 const tikz::core::MetaPos & EdgePath::startMetaPos() const
 {
     return d->start;
 }
 
 const tikz::core::MetaPos & EdgePath::endMetaPos() const
 {
     return d->end;
 }
 
 void EdgePath::deconstruct()
 {
     // just set both the start and end pos to (0, 0).
     // undo (i.e., creating the node again), will then restore the initial
     // connections correctly.
     ConfigTransaction transaction(this);
     setStartPos(tikz::Pos());
     setEndPos(tikz::Pos());
 }
 
 void EdgePath::detachFromNode(Node * node)
 {
     Q_ASSERT(node != nullptr);
 
     // disconnect start from node, if currently attached
     if (d->start.node() == node) {
         auto newPos = startMetaPos();
         newPos.setNode(nullptr);
         setStartMetaPos(newPos);
     }
 
     // disconnect end from node, if currently attached
     if (d->end.node() == node) {
         auto newPos = endMetaPos();
         newPos.setNode(nullptr);
         setEndMetaPos(newPos);
     }
 
     Q_ASSERT(d->start.node() != node);
     Q_ASSERT(d->end.node() != node);
 }
 
 PathType EdgePath::type() const
 {
     return d->type;
 }
 
 void EdgePath::setStartNode(Node* node)
 {
     auto newPos = startMetaPos();
     newPos.setNode(node);
     setStartMetaPos(newPos);
 
     Q_ASSERT(d->start.node() == node);
 }
 
 void EdgePath::setEndNode(Node* node)
 {
     auto newPos = endMetaPos();
     newPos.setNode(node);
     setEndMetaPos(newPos);
 
     Q_ASSERT(d->end.node() == node);
 }
 
 Node* EdgePath::startNode() const
 {
     return d->start.node();
 }
 
 Node* EdgePath::endNode()
 {
     return d->end.node();
 }
 
 tikz::Pos EdgePath::startPos() const
 {
     return d->start.pos();
 }
 
 tikz::Pos EdgePath::endPos() const
 {
     return d->end.pos();
 }
 
 void EdgePath::setStartPos(const tikz::Pos & pos)
 {
     auto newPos = startMetaPos();
     newPos.setPos(pos);
     setStartMetaPos(newPos);
 
     Q_ASSERT(d->start.pos() == pos);
 }
 
 void EdgePath::setEndPos(const tikz::Pos & pos)
 {
     auto newPos = endMetaPos();
     newPos.setPos(pos);
     setEndMetaPos(newPos);
 
     Q_ASSERT(d->end.pos() == pos);
 }
 
 void EdgePath::setStartMetaPos(const tikz::core::MetaPos & pos)
 {
     if (d->start == pos) {
         return;
     }
 
     if (document()->undoActive()) {
         ConfigTransaction transaction(this);
         auto oldNode = startNode();
         d->start = pos;
         auto newNode = startNode();
         if (oldNode != newNode) {
             Q_EMIT startNodeChanged(newNode);
         }
     } else {
         document()->addUndoItem(
             new UndoSetEdgePos(this, pos, true, document()));
     }
 }
 
 void EdgePath::setEndMetaPos(const tikz::core::MetaPos & pos)
 {
     if (d->end == pos) {
         return;
     }
 
     if (document()->undoActive()) {
         ConfigTransaction transaction(this);
         auto oldNode = endNode();
         d->end = pos;
         auto newNode = endNode();
         if (oldNode != newNode) {
             Q_EMIT endNodeChanged(newNode);
         }
     } else {
         document()->addUndoItem(
             new UndoSetEdgePos(this, pos, false, document()));
     }
 }
 
 QString EdgePath::startAnchor() const
 {
     return d->start.anchor();
 }
 
 QString EdgePath::endAnchor() const
 {
     return d->end.anchor();
 }
 
 void EdgePath::setStartAnchor(const QString & anchor)
 {
     auto newPos = startMetaPos();
     newPos.setAnchor(anchor);
     setStartMetaPos(newPos);
 
     Q_ASSERT(d->start.anchor() == anchor);
 }
 
 void EdgePath::setEndAnchor(const QString & anchor)
 {
     auto newPos = endMetaPos();
     newPos.setAnchor(anchor);
     setEndMetaPos(newPos);
 
     Q_ASSERT(d->end.anchor() == anchor);
 }
 
 void EdgePath::loadData(const QJsonObject & json)
 {
     ConfigTransaction transaction(this);
     Path::loadData(json);
 
     if (json.contains("start")) {
         setStartMetaPos(MetaPos(json["start"].toString(), document()));
     }
 
     if (json.contains("end")) {
         setEndMetaPos(MetaPos(json["end"].toString(), document()));
     }
 
     if (json.contains("style")) {
         const Uid styleId(json["style"].toString(), document());
         setStyle(styleId);
     }
 }
 
 QJsonObject EdgePath::saveData() const
 {
     QJsonObject json = Path::saveData();
 
     json["start"] = d->start.toString();
     json["end"] = d->end.toString();
     json["style"] = styleUid().toString();
 
     return json;
 }
 
 
 }
 }
 
 // kate: indent-width 4; replace-tabs on;