document.h Example Filedemos/undo/document.h/**************************************************************************** ** ** 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. ** ** ** ** ** ** $QT_END_LICENSE$ ** ****************************************************************************/ #ifndef DOCUMENT_H #define DOCUMENT_H #include <QWidget> QT_FORWARD_DECLARE_CLASS(QUndoStack) QT_FORWARD_DECLARE_CLASS(QTextStream) class Shape { public: enum Type { Rectangle, Circle, Triangle }; Shape(Type type = Rectangle, const QColor &color = Qt::red, const QRect &rect = QRect()); Type type() const; QString name() const; QRect rect() const; QRect resizeHandle() const; QColor color() const; static QString typeToString(Type type); static Type stringToType(const QString &s, bool *ok = 0); static const QSize minSize; private: Type m_type; QRect m_rect; QColor m_color; QString m_name; friend class Document; }; class Document : public QWidget { Q_OBJECT public: Document(QWidget *parent = 0); QString addShape(const Shape &shape); void deleteShape(const QString &shapeName); Shape shape(const QString &shapeName) const; QString currentShapeName() const; void setShapeRect(const QString &shapeName, const QRect &rect); void setShapeColor(const QString &shapeName, const QColor &color); bool load(QTextStream &stream); void save(QTextStream &stream); QString fileName() const; void setFileName(const QString &fileName); QUndoStack *undoStack() const; signals: void currentShapeChanged(const QString &shapeName); protected: void paintEvent(QPaintEvent *event); void mousePressEvent(QMouseEvent *event); void mouseReleaseEvent(QMouseEvent *event); void mouseMoveEvent(QMouseEvent *event); private: void setCurrentShape(int index); int indexOf(const QString &shapeName) const; int indexAt(const QPoint &pos) const; QString uniqueName(const QString &name) const; QList<Shape> m_shapeList; int m_currentIndex; int m_mousePressIndex; QPoint m_mousePressOffset; bool m_resizeHandlePressed; QString m_fileName; QUndoStack *m_undoStack; }; #endif // DOCUMENT_H © 2008-2011 Nokia Corporation and/or its subsidiaries. Nokia, Qt and their respective logos are trademarks of Nokia Corporation in Finland and/or other countries worldwide. All other trademarks are property of their respective owners. Privacy Policy Licensees holding valid Qt Commercial licenses may use this document in accordance with the Qt Commercial License Agreement provided with the Software or, alternatively, in accordance with the terms contained in a written agreement between you and Nokia. Alternatively, this document may be used under the terms of the GNU Free Documentation License version 1.3 as published by the Free Software Foundation. |