src/gui/image/qiconengine.h
author Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
Fri, 14 May 2010 16:40:13 +0300
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/****************************************************************************
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**
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the QtGui module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** No Commercial Usage
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** This file contains pre-release code and may not be distributed.
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** You may use this file in accordance with the terms and conditions
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** contained in the Technology Preview License Agreement accompanying
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** this package.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file.  Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights.  These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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**
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**
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**
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**
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**
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**
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**
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef QICONENGINE_H
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#define QICONENGINE_H
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#include <QtCore/qglobal.h>
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#include <QtCore/qlist.h>
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#include <QtGui/qicon.h>
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QT_BEGIN_HEADER
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QT_BEGIN_NAMESPACE
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QT_MODULE(Gui)
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class Q_GUI_EXPORT QIconEngine
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{
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public:
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    virtual ~QIconEngine();
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    virtual void paint(QPainter *painter, const QRect &rect, QIcon::Mode mode, QIcon::State state) = 0;
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    virtual QSize actualSize(const QSize &size, QIcon::Mode mode, QIcon::State state);
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    virtual QPixmap pixmap(const QSize &size, QIcon::Mode mode, QIcon::State state);
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    virtual void addPixmap(const QPixmap &pixmap, QIcon::Mode mode, QIcon::State state);
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    virtual void addFile(const QString &fileName, const QSize &size, QIcon::Mode mode, QIcon::State state);
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#if 0
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    virtual int frameCount(QIcon::Mode fromMode, QIcon::State fromState, QIcon::Mode toMode, QIcon::State toState);
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    virtual void paintFrame(QPainter *painter, const QRect &rect, int frameNumber, QIcon::Mode fromMode, QIcon::State fromState, QIcon::Mode toMode, QIcon::State toState);
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#endif
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};
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// ### Qt 5: move the below into QIconEngine
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class Q_GUI_EXPORT QIconEngineV2 : public QIconEngine
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{
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public:
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    virtual QString key() const;
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    virtual QIconEngineV2 *clone() const;
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    virtual bool read(QDataStream &in);
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    virtual bool write(QDataStream &out) const;
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    virtual void virtual_hook(int id, void *data);
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public:
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    enum IconEngineHook { AvailableSizesHook = 1 };
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    struct AvailableSizesArgument
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    {
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        QIcon::Mode mode;
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        QIcon::State state;
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        QList<QSize> sizes;
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    };
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    // ### Qt 5: make this function const and virtual.
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    QList<QSize> availableSizes(QIcon::Mode mode = QIcon::Normal,
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                                QIcon::State state = QIcon::Off);
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};
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QT_END_NAMESPACE
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QT_END_HEADER
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#endif // QICONENGINE_H