/****************************************************************************
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** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
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** This file is part of the plugins of the Qt Toolkit.
**
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** General Public License version 2.1 as published by the Free Software
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** 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
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****************************************************************************/

#ifndef QFBSCREEN_P_H
#define QFBSCREEN_P_H

#include <qpa/qplatformscreen.h>
#include <QtCore/QTimer>
#include <QtCore/QSize>
#include "qfbcursor_p.h"

QT_BEGIN_NAMESPACE

class QFbWindow;
class QFbCursor;
class QPainter;
class QFbBackingStore;

class QFbScreen : public QObject, public QPlatformScreen
{
    Q_OBJECT
public:
    QFbScreen();
    ~QFbScreen();

    QRect geometry() const Q_DECL_OVERRIDE { return mGeometry; }
    int depth() const Q_DECL_OVERRIDE { return mDepth; }
    QImage::Format format() const Q_DECL_OVERRIDE { return mFormat; }
    QSizeF physicalSize() const Q_DECL_OVERRIDE { return mPhysicalSize; }
    QPlatformCursor *cursor() const Q_DECL_OVERRIDE { return mCursor; }

    QWindow *topWindow() const;
    QWindow *topLevelAt(const QPoint & p) const Q_DECL_OVERRIDE;

    // compositor api
    virtual void addWindow(QFbWindow *window);
    virtual void removeWindow(QFbWindow *window);
    virtual void raise(QFbWindow *window);
    virtual void lower(QFbWindow *window);
    virtual void topWindowChanged(QWindow *) {}

    void addBackingStore(QFbBackingStore *bs) {mBackingStores << bs;}

    void scheduleUpdate();

public slots:
    virtual void setDirty(const QRect &rect);
    void setPhysicalSize(const QSize &size);
    void setGeometry(const QRect &rect);

protected slots:
    virtual QRegion doRedraw();

protected:
    void initializeCompositor();

    QList<QFbWindow *> mWindowStack;
    QRegion mRepaintRegion;
    QTimer mRedrawTimer;

    QFbCursor *mCursor;
    QRect mGeometry;
    int mDepth;
    QImage::Format mFormat;
    QSizeF mPhysicalSize;
    QImage *mScreenImage;

private:
    void invalidateRectCache() { mIsUpToDate = false; }
    void generateRects();

    QPainter *mCompositePainter;
    QVector<QPair<QRect, int> > mCachedRects;
    QList <QFbBackingStore*> mBackingStores;

    friend class QFbWindow;
    bool mIsUpToDate;
};

QT_END_NAMESPACE

#endif // QFBSCREEN_P_H