/****************************************************************************
**
** 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 tools applications of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the Technology Preview License Agreement accompanying
** this package.
**
** GNU Lesser General Public License Usage
** Alternatively, 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.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
**
**
**
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QVFBVIEW_H
#define QVFBVIEW_H

//#ifdef QT_NO_OPENGL
#include <QWidget>
//#else
//#define QVFB_USE_GLWIDGET
//#include <QGLWidget>
//#endif

QT_BEGIN_NAMESPACE

class QImage;
class QTimer;
class QAnimationWriter;
struct QVFbHeader;
class QVFbViewProtocol;
class QX11EmbedContainer;

class QVFbAbstractView :
#ifdef QVFB_USE_GLWIDGET
    public QGLWidget
#else
    public QWidget
#endif
{
    Q_OBJECT
public:
    enum Rotation { Rot0, Rot90, Rot180, Rot270 };
    enum PixelFormat { DefaultFormat, GrayscaleFormat, RGBFormat, ARGBFormat };
    QVFbAbstractView( QWidget *parent = 0);
    virtual ~QVFbAbstractView();

    virtual int displayId() const = 0;
    virtual int displayWidth() const = 0;
    virtual int displayHeight() const = 0;
    virtual int displayDepth() const = 0;
    virtual PixelFormat displayFormat() const { return DefaultFormat; }
    virtual bool rgbSwapped() const { return false; }
    virtual Rotation displayRotation() const = 0;

    virtual void setGamma(double gr, double gg, double gb) = 0;
    virtual double gammaRed() const = 0;
    virtual double gammaGreen() const = 0;
    virtual double gammaBlue() const = 0;
    virtual void getGamma(int i, QRgb& rgb) = 0;

    virtual bool touchScreenEmulation() const = 0;
    virtual bool lcdScreenEmulation() const = 0;
    virtual int rate() = 0;
    virtual bool animating() const = 0;
    virtual QImage image() const = 0;
    virtual void setRate(int) = 0;

    virtual double zoomH() const = 0;
    virtual double zoomV() const = 0;

public slots:
    virtual void setTouchscreenEmulation( bool ) = 0;
    virtual void setLcdScreenEmulation( bool ) = 0;
    virtual void setZoom( double, double ) = 0;
    virtual void setRotation(Rotation) = 0;
    virtual void startAnimation( const QString& ) = 0;
    virtual void stopAnimation() = 0;
    virtual void skinKeyPressEvent( int code, const QString& text, bool autorep=FALSE ) = 0;
    virtual void skinKeyReleaseEvent( int code, const QString& text, bool autorep=FALSE ) = 0;
    virtual void setViewFormat(PixelFormat) {}
    virtual void setRgbSwapped( bool ) {};
    virtual void embedDisplay(WId) {}
};

class QVFbView : public QVFbAbstractView
{
    Q_OBJECT
public:
    QVFbView(int id, int w, int h, int d, Rotation r, QWidget *parent = 0);
    virtual ~QVFbView();

    int displayId() const;
    int displayWidth() const;
    int displayHeight() const;
    int displayDepth() const;
    PixelFormat displayFormat() const;
    bool rgbSwapped() const { return rgb_swapped; }
    Rotation displayRotation() const;

    bool touchScreenEmulation() const { return emulateTouchscreen; }
    bool lcdScreenEmulation() const { return emulateLcdScreen; }
    int rate() { return refreshRate; }
    bool animating() const { return !!animation; }
    QImage image() const;

    void setGamma(double gr, double gg, double gb);
    double gammaRed() const { return gred; }
    double gammaGreen() const { return ggreen; }
    double gammaBlue() const { return gblue; }
    void getGamma(int i, QRgb& rgb);
    void skinMouseEvent(QMouseEvent *e);

    double zoomH() const { return hzm; }
    double zoomV() const { return vzm; }

    QSize sizeHint() const;
    void setRate(int);

public slots:
    void setTouchscreenEmulation(bool);
    void setLcdScreenEmulation(bool);
    void setZoom(double, double);
    void setRotation(Rotation);
    void startAnimation(const QString&);
    void stopAnimation();
    void skinKeyPressEvent(int code, const QString& text, bool autorep=FALSE);
    void skinKeyReleaseEvent(int code, const QString& text, bool autorep=FALSE);
    void setViewFormat(PixelFormat);
    void setRgbSwapped(bool b) { rgb_swapped = b; }
#ifdef Q_WS_X11
    void embedDisplay(WId id);
#endif

protected slots:
    void refreshDisplay(const QRect &);

protected:
    QImage getBuffer(const QRect &r, int &leading) const;
    void drawScreen(const QRect &r);
    void sendMouseData(const QPoint &pos, int buttons, int wheel);
    void sendKeyboardData(QString unicode, int keycode, int modifiers,
			   bool press, bool repeat);
    //virtual bool eventFilter(QObject *obj, QEvent *e);
    virtual void paintEvent(QPaintEvent *pe);
    virtual void contextMenuEvent(QContextMenuEvent *e);
    virtual void mousePressEvent(QMouseEvent *e);
    virtual void mouseDoubleClickEvent(QMouseEvent *e);
    virtual void mouseReleaseEvent(QMouseEvent *e);
    virtual void mouseMoveEvent(QMouseEvent *e);
    virtual void wheelEvent(QWheelEvent *e);
    virtual void keyPressEvent(QKeyEvent *e);
    virtual void keyReleaseEvent(QKeyEvent *e);
    virtual bool event(QEvent *event);

private:
    void setDirty(const QRect&);
    int viewdepth; // "faked" depth
    PixelFormat viewFormat;
    bool rgb_swapped;
    int rsh;
    int gsh;
    int bsh;
    int rmax;
    int gmax;
    int bmax;
    int contentsWidth;
    int contentsHeight;
    double gred, ggreen, gblue;
    QRgb* gammatable;

    int refreshRate;
    QAnimationWriter *animation;
    double hzm,vzm;
    QVFbViewProtocol *mView;
    bool emulateTouchscreen;
    bool emulateLcdScreen;
    Rotation rotation;

#ifdef Q_WS_X11
    QX11EmbedContainer *embedContainer;
#endif
};

QT_END_NAMESPACE

#endif