File indexing completed on 2023-09-24 11:50:56

0001 /*
0002     SPDX-FileCopyrightText: 1999-2006 √Čric Bischoff <ebischoff@nerim.net>
0003     SPDX-FileCopyrightText: 2007 Albert Astals Cid <aacid@kde.org>
0004 
0005     SPDX-License-Identifier: GPL-2.0-or-later
0006 */
0007 
0008 /* Action stored in the undo buffer */
0009 
0010 #include "action.h"
0011 
0012 #include <QGraphicsScene>
0013 
0014 #include "todraw.h"
0015 
0016 ActionAdd::ActionAdd(ToDraw *item, QGraphicsScene *scene)
0017  : m_item(item), m_scene(scene), m_done(false), m_shouldAdd(false)
0018 {
0019     // First m_shouldAdd is false since it was already added
0020     // in the playground code
0021 }
0022 
0023 ActionAdd::~ActionAdd()
0024 {
0025     if (!m_done) delete m_item;
0026 }
0027 
0028 void ActionAdd::redo()
0029 {
0030     if (m_shouldAdd) {
0031         m_scene->addItem(m_item);
0032     }
0033     m_done = true;
0034     m_shouldAdd = true;
0035 }
0036 
0037 void ActionAdd::undo()
0038 {
0039     m_scene->removeItem(m_item);
0040     m_done = false;
0041 }
0042 
0043 
0044 
0045 ActionRemove::ActionRemove(ToDraw *item, const QPointF &oldPos, QGraphicsScene *scene)
0046  : m_item(item), m_scene(scene), m_done(true)
0047 {
0048     m_oldPos = QPointF(oldPos.x() / scene->width(), oldPos.y() / scene->height());
0049 }
0050 
0051 ActionRemove::~ActionRemove()
0052 {
0053     if (m_done) delete m_item;
0054 }
0055 
0056 void ActionRemove::redo()
0057 {
0058     m_scene->removeItem(m_item);
0059     m_done = true;
0060 }
0061 
0062 void ActionRemove::undo()
0063 {
0064     m_item->setPos(m_oldPos.x() * m_scene->width(), m_oldPos.y() * m_scene->height());
0065     m_scene->addItem(m_item);
0066     m_done = false;
0067 }
0068 
0069 
0070 
0071 ActionMove::ActionMove(ToDraw *item, const QPointF &oldPos, int zValue, QGraphicsScene *scene)
0072  : m_item(item), m_zValue(zValue), m_scene(scene)
0073 {
0074     m_oldPos = QPointF(oldPos.x() / scene->width(), oldPos.y() / scene->height());
0075     m_newPos = QPointF(m_item->pos().x() / scene->width(), m_item->pos().y() / scene->height());
0076 }
0077 
0078 void ActionMove::redo()
0079 {
0080     qreal zValue = m_item->zValue();
0081     m_item->setPos(m_newPos.x() * m_scene->width(), m_newPos.y() * m_scene->height());
0082     m_item->setZValue(m_zValue);
0083     m_zValue = zValue;
0084 }
0085 
0086 void ActionMove::undo()
0087 {
0088     qreal zValue = m_item->zValue();
0089     m_item->setPos(m_oldPos.x() * m_scene->width(), m_oldPos.y() * m_scene->height());
0090     m_item->setZValue(m_zValue);
0091     m_zValue = zValue;
0092 }