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-rw-r--r--demos/undo/commands.cpp180
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diff --git a/demos/undo/commands.cpp b/demos/undo/commands.cpp
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-/****************************************************************************
-**
-** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
-** All rights reserved.
-** Contact: Nokia Corporation (qt-info@nokia.com)
-**
-** This file is part of the demonstration applications of the Qt Toolkit.
-**
-** $QT_BEGIN_LICENSE:LGPL$
-** GNU Lesser General Public License Usage
-** This file may be used under the terms of the GNU Lesser General Public
-** License version 2.1 as published by the Free Software Foundation and
-** appearing in the file LICENSE.LGPL included in the packaging of this
-** file. Please review the following information to ensure the GNU Lesser
-** General Public License version 2.1 requirements will be met:
-** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
-**
-** In addition, as a special exception, Nokia gives you certain additional
-** rights. These rights are described in the Nokia Qt LGPL Exception
-** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
-**
-** GNU General Public License Usage
-** Alternatively, this file may be used under the terms of the GNU General
-** Public License version 3.0 as published by the Free Software Foundation
-** and appearing in the file LICENSE.GPL included in the packaging of this
-** file. Please review the following information to ensure the GNU General
-** Public License version 3.0 requirements will be met:
-** http://www.gnu.org/copyleft/gpl.html.
-**
-** Other Usage
-** Alternatively, this file may be used in accordance with the terms and
-** conditions contained in a signed written agreement between you and Nokia.
-**
-**
-**
-**
-**
-** $QT_END_LICENSE$
-**
-****************************************************************************/
-
-#include "commands.h"
-
-static const int setShapeRectCommandId = 1;
-static const int setShapeColorCommandId = 2;
-
-/******************************************************************************
-** AddShapeCommand
-*/
-
-AddShapeCommand::AddShapeCommand(Document *doc, const Shape &shape, QUndoCommand *parent)
- : QUndoCommand(parent)
-{
- m_doc = doc;
- m_shape = shape;
-}
-
-void AddShapeCommand::undo()
-{
- m_doc->deleteShape(m_shapeName);
-}
-
-void AddShapeCommand::redo()
-{
- // A shape only gets a name when it is inserted into a document
- m_shapeName = m_doc->addShape(m_shape);
- setText(QObject::tr("Add %1").arg(m_shapeName));
-}
-
-/******************************************************************************
-** RemoveShapeCommand
-*/
-
-RemoveShapeCommand::RemoveShapeCommand(Document *doc, const QString &shapeName,
- QUndoCommand *parent)
- : QUndoCommand(parent)
-{
- setText(QObject::tr("Remove %1").arg(shapeName));
- m_doc = doc;
- m_shape = doc->shape(shapeName);
- m_shapeName = shapeName;
-}
-
-void RemoveShapeCommand::undo()
-{
- m_shapeName = m_doc->addShape(m_shape);
-}
-
-void RemoveShapeCommand::redo()
-{
- m_doc->deleteShape(m_shapeName);
-}
-
-/******************************************************************************
-** SetShapeColorCommand
-*/
-
-SetShapeColorCommand::SetShapeColorCommand(Document *doc, const QString &shapeName,
- const QColor &color, QUndoCommand *parent)
- : QUndoCommand(parent)
-{
- setText(QObject::tr("Set %1's color").arg(shapeName));
-
- m_doc = doc;
- m_shapeName = shapeName;
- m_oldColor = doc->shape(shapeName).color();
- m_newColor = color;
-}
-
-void SetShapeColorCommand::undo()
-{
- m_doc->setShapeColor(m_shapeName, m_oldColor);
-}
-
-void SetShapeColorCommand::redo()
-{
- m_doc->setShapeColor(m_shapeName, m_newColor);
-}
-
-bool SetShapeColorCommand::mergeWith(const QUndoCommand *command)
-{
- if (command->id() != setShapeColorCommandId)
- return false;
-
- const SetShapeColorCommand *other = static_cast<const SetShapeColorCommand*>(command);
- if (m_shapeName != other->m_shapeName)
- return false;
-
- m_newColor = other->m_newColor;
- return true;
-}
-
-int SetShapeColorCommand::id() const
-{
- return setShapeColorCommandId;
-}
-
-/******************************************************************************
-** SetShapeRectCommand
-*/
-
-SetShapeRectCommand::SetShapeRectCommand(Document *doc, const QString &shapeName,
- const QRect &rect, QUndoCommand *parent)
- : QUndoCommand(parent)
-{
- setText(QObject::tr("Change %1's geometry").arg(shapeName));
-
- m_doc = doc;
- m_shapeName = shapeName;
- m_oldRect = doc->shape(shapeName).rect();
- m_newRect = rect;
-}
-
-void SetShapeRectCommand::undo()
-{
- m_doc->setShapeRect(m_shapeName, m_oldRect);
-}
-
-void SetShapeRectCommand::redo()
-{
- m_doc->setShapeRect(m_shapeName, m_newRect);
-}
-
-bool SetShapeRectCommand::mergeWith(const QUndoCommand *command)
-{
- if (command->id() != setShapeRectCommandId)
- return false;
-
- const SetShapeRectCommand *other = static_cast<const SetShapeRectCommand*>(command);
- if (m_shapeName != other->m_shapeName)
- return false;
-
- m_newRect = other->m_newRect;
- return true;
-}
-
-int SetShapeRectCommand::id() const
-{
- return setShapeRectCommandId;
-}