File indexing completed on 2024-04-21 04:05:05

 /*
     SPDX-FileCopyrightText: 1999-2006 Éric Bischoff <ebischoff@nerim.net>
     SPDX-FileCopyrightText: 2007 Albert Astals Cid <aacid@kde.org>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 /* Action stored in the undo buffer */
 
 #include "action.h"
 
 #include <QGraphicsScene>
 
 #include "todraw.h"
 
 ActionAdd::ActionAdd(ToDraw *item, QGraphicsScene *scene)
  : m_item(item), m_scene(scene), m_done(false), m_shouldAdd(false)
 {
     // First m_shouldAdd is false since it was already added
     // in the playground code
 }
 
 ActionAdd::~ActionAdd()
 {
     if (!m_done) delete m_item;
 }
 
 void ActionAdd::redo()
 {
     if (m_shouldAdd) {
         m_scene->addItem(m_item);
     }
     m_done = true;
     m_shouldAdd = true;
 }
 
 void ActionAdd::undo()
 {
     m_scene->removeItem(m_item);
     m_done = false;
 }
 
 
 
 ActionRemove::ActionRemove(ToDraw *item, const QPointF &oldPos, QGraphicsScene *scene)
  : m_item(item), m_scene(scene), m_done(true)
 {
     m_oldPos = QPointF(oldPos.x() / scene->width(), oldPos.y() / scene->height());
 }
 
 ActionRemove::~ActionRemove()
 {
     if (m_done) delete m_item;
 }
 
 void ActionRemove::redo()
 {
     m_scene->removeItem(m_item);
     m_done = true;
 }
 
 void ActionRemove::undo()
 {
     m_item->setPos(m_oldPos.x() * m_scene->width(), m_oldPos.y() * m_scene->height());
     m_scene->addItem(m_item);
     m_done = false;
 }
 
 
 
 ActionMove::ActionMove(ToDraw *item, const QPointF &oldPos, int zValue, QGraphicsScene *scene)
  : m_item(item), m_zValue(zValue), m_scene(scene)
 {
     m_oldPos = QPointF(oldPos.x() / scene->width(), oldPos.y() / scene->height());
     m_newPos = QPointF(m_item->pos().x() / scene->width(), m_item->pos().y() / scene->height());
 }
 
 void ActionMove::redo()
 {
     qreal zValue = m_item->zValue();
     m_item->setPos(m_newPos.x() * m_scene->width(), m_newPos.y() * m_scene->height());
     m_item->setZValue(m_zValue);
     m_zValue = zValue;
 }
 
 void ActionMove::undo()
 {
     qreal zValue = m_item->zValue();
     m_item->setPos(m_oldPos.x() * m_scene->width(), m_oldPos.y() * m_scene->height());
     m_item->setZValue(m_zValue);
     m_zValue = zValue;
 }