File indexing completed on 2024-05-05 04:35:18

 /* This file is part of the TikZKit project.
  *
  * Copyright (C) 2013 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 "TikzScene.h"
 
 #include "DocumentPrivate.h"
 #include "NodeItem.h"
 #include "PathItem.h"
 #include "AbstractTool.h"
 #include "ProxyTool.h" // FIXME: only temporarily
 
 #include <tikz/core/Transaction.h>
 #include <tikz/core/Value.h>
 
 #include <QGraphicsItem>
 #include <QGraphicsSceneMouseEvent>
 #include <QGraphicsView>
 #include <QVarLengthArray>
 #include <QDebug>
 #include <QKeyEvent>
 #include <QUndoStack>
 
 #include <math.h>
 
 namespace tikz {
 namespace ui {
 
 class TikzScenePrivate
 {
 public:
     // associated tikz Document
     DocumentPrivate * doc = nullptr;
 
     // The size of the cells in the grid.
     int subDivisions = 1;
 
     // Mouse edit mode
     TikzEditMode editMode = TikzEditMode::ModeSelect;
 
     // currently active tool
     AbstractTool * tool = nullptr;
 };
 
 TikzScene::TikzScene(DocumentPrivate * doc)
     : QGraphicsScene(doc)
     , d(new TikzScenePrivate())
 {
     d->doc = doc;
     d->tool = new ProxyTool(doc, this);
 
     connect(doc, &DocumentPrivate::changed, this, &TikzScene::updateSceneRect);
     updateSceneRect();
 }
 
 TikzScene::~TikzScene()
 {
     delete d;
 }
 
 DocumentPrivate * TikzScene::document() const
 {
     return d->doc;
 }
 
 void TikzScene::setEditMode(TikzEditMode mode)
 {
     if (mode != d->editMode) {
         d->editMode = mode;
 
         Q_EMIT editModeChanged(mode);
     }
 }
 
 TikzEditMode TikzScene::editMode() const
 {
     return d->editMode;
 }
 
 void TikzScene::mousePressEvent(QGraphicsSceneMouseEvent * event)
 {
     // first let QGraphicsScene do its work
     QGraphicsScene::mousePressEvent(event);
     if (event->isAccepted()) {
         return;
     }
 
     // event not accepted, so pass it on to the tool
     if (d->tool) {
         d->tool->mousePressEvent(event);
         event->accept();
     }
 }
 
 void TikzScene::mouseMoveEvent(QGraphicsSceneMouseEvent * event)
 {
     // first let QGraphicsScene do its work
     QGraphicsScene::mouseMoveEvent(event);
     if (event->isAccepted()) {
         return;
     }
 
     // event not accepted, so pass it on to the tool
     if (d->tool) {
         d->tool->mouseMoveEvent(event);
         event->accept();
     }
 }
 
 void TikzScene::mouseReleaseEvent(QGraphicsSceneMouseEvent * event)
 {
     // first let QGraphicsScene do its work
     QGraphicsScene::mouseReleaseEvent(event);
     if (event->isAccepted()) {
         return;
     }
 
     if (d->tool) {
         d->tool->mouseReleaseEvent(event);
         event->accept();
     }
 }
 
 void TikzScene::keyPressEvent(QKeyEvent * keyEvent)
 {
     // pass key event to current tool, if possible
     if (d->tool) {
         d->tool->keyPressEvent(keyEvent);
         if (keyEvent->isAccepted()) {
             return;
         }
     }
 
     // on Del, remove selected items
     if (keyEvent->key() == Qt::Key_Delete && !document()->transactionRunning()) {
         // group deletion of items
         tikz::core::Transaction transaction(d->doc);
 
         // delete all selected items
         for (QGraphicsItem* item : selectedItems()) {
             if (item->type() == QGraphicsItem::UserType + 2) {
                 NodeItem* node = dynamic_cast<NodeItem*>(item);
                 Q_ASSERT(node);
                 d->doc->deleteNodeItem(node);
             } else if (item->type() == QGraphicsItem::UserType + 3) {
                 tikz::ui::PathItem * path = dynamic_cast<tikz::ui::PathItem*>(item);
                 Q_ASSERT(path);
                 d->doc->deletePathItem(path);
             }
         }
 
         keyEvent->accept();
         return;
     }
 
     // nothing done with the event, pass on
     QGraphicsScene::keyPressEvent(keyEvent);
 }
 
 void TikzScene::updateSceneRect()
 {
     // set sane scene rect
     setSceneRect(-tikz::cm2pt(15), -tikz::cm2pt(15),
                  tikz::cm2pt(30), tikz::cm2pt(30));
     return;
     qDebug() << "ITEM SCENERECT CHANGED";
     setSceneRect(itemsBoundingRect());
 }
 
 }
 }
 
 // kate: indent-width 4; replace-tabs on;