/*  This file is part of the KDE project.+
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Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).+
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This library is free software: you can redistribute it and/or modify+
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it under the terms of the GNU Lesser General Public License as published by+
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the Free Software Foundation, either version 2.1 or 3 of the License.+
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This library is distributed in the hope that it will be useful,+
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but WITHOUT ANY WARRANTY; without even the implied warranty of+
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the+
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GNU Lesser General Public License for more details.+
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+
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You should have received a copy of the GNU Lesser General Public License+
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along with this library.  If not, see <http://www.gnu.org/licenses/>.+
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*/+
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#ifndef PHONON_MMF_VIDEOOUTPUT_DSA_H+
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#define PHONON_MMF_VIDEOOUTPUT_DSA_H+
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+
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#include <QRect>+
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+
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#include "phonon/mmf/abstractvideooutput.h"+
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+
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QT_BEGIN_NAMESPACE+
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+
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class QResizeEvent;+
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class QMoveEvent;+
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+
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namespace Phonon+
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{+
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namespace MMF+
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{+
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class AncestorMoveMonitor;+
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+
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/**+
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 * @short Widget on which video is displayed by DSA rendering+
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 *+
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 * This implementation is used on devices with the legacy graphics+
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 * subsystem, which does not support surfaces.  On such devices,+
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 * video rendering is done via Direct Screen Access (DSA), whereby+
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 * the video decoder writes directly to the framebuffer.  To ensure+
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 * that the window server and video decoder do not try to draw to+
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 * the same screen region at the same time, the video subsystem+
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 * first requests permission to perform DSA.  If the window server+
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 * needs to draw to this screen region (for example to display a+
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 * message dialog), it first notifies the video subsystem that it+
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 * must stop rendering to this region.+
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 *+
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 * @see SurfaceVideoOutput+
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 */+
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class DsaVideoOutput+
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    :   public AbstractVideoOutput+
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{+
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    Q_OBJECT+
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+
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public:+
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    DsaVideoOutput(QWidget *parent);+
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    ~DsaVideoOutput();+
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+
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    void setAncestorMoveMonitor(AncestorMoveMonitor *monitor);+
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+
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    // Get absolute screen rectangle for video window+
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    const QRect& videoWindowScreenRect() const;+
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+
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    // Called by AncestorMoveMonitor+
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    void ancestorMoved();+
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+
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public Q_SLOTS:+
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    // Callbacks received from Symbian QtGui implementation, when it+
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    // begins / ends blitting the video widget's backing store to the+
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    // window server.+
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    void beginNativePaintEvent(const QRect & /*controlRect*/);+
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    void endNativePaintEvent(const QRect & /*controlRect*/);+
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+
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Q_SIGNALS:+
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    void videoWindowScreenRectChanged();+
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+
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    // Emitted when the Symbian QtGui implementation begins / ends+
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    // blitting the video widget's backing store to the window server.+
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    void beginVideoWindowNativePaint();+
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    void endVideoWindowNativePaint();+
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+
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private:+
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    void getVideoWindowScreenRect();+
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    void registerForAncestorMoved();+
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+
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    // QWidget+
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    void resizeEvent(QResizeEvent *event);+
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    void moveEvent(QMoveEvent *event);+
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    bool event(QEvent *event);+
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+
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private:+
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    // Not owned+
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    AncestorMoveMonitor*    m_ancestorMoveMonitor;+
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+
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    // Absolute screen rectangle on which video is displayed+
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    QRect                   m_videoWindowScreenRect;+
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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_NAMESPACE+
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+
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#endif // !PHONON_MMF_VIDEOOUTPUT_DSA_H+
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