/**********************************************************************
** Copyright (C) 1992-2007 Trolltech ASA.  All rights reserved.
**
** This file is part of Qt/Embedded virtual framebuffer.
**
** This file may be distributed and/or modified under the terms of the
** GNU General Public License version 2 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
**
** See http://www.trolltech.com/gpl/ for GPL licensing information.
**
** Contact info@trolltech.com if any conditions of this licensing are
** not clear to you.
**
**********************************************************************/

#include <qscrollview.h>

class QImage;
class QTimer;
class QAnimationWriter;
class QLock;
struct QVFbHeader;

class QVFbView : public QScrollView
{
    Q_OBJECT
public:
    QVFbView( int display_id, int w, int h, int d, QWidget *parent = 0,
		const char *name = 0, uint wflags = 0 );
    ~QVFbView();

    int displayId() const;
    int displayWidth() const;
    int displayHeight() const;
    int displayDepth() const;

    bool touchScreenEmulation() const { return emulateTouchscreen; }
    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 skinKeyPressEvent( QKeyEvent *e ) { keyPressEvent(e); }
    void skinKeyReleaseEvent( QKeyEvent *e ) { keyReleaseEvent(e); }

    double zoom() const { return zm; }

    QSize sizeHint() const;
public slots:
    void setTouchscreenEmulation( bool );

    void setRate( int );
    void setZoom( double );
    void startAnimation( const QString& );
    void stopAnimation();

protected slots:
    void timeout();

protected:
    void initLock();
    void lock();
    void unlock();
    QImage getBuffer( const QRect &r, int &leading ) const;
    void drawScreen();
    void sendMouseData( const QPoint &pos, int buttons );
    void sendKeyboardData( int unicode, int keycode, int modifiers,
			   bool press, bool repeat );
    virtual bool eventFilter( QObject *obj, QEvent *e );
    virtual void viewportPaintEvent( QPaintEvent *pe );
    virtual void contentsMousePressEvent( QMouseEvent *e );
    virtual void contentsMouseDoubleClickEvent( QMouseEvent *e );
    virtual void contentsMouseReleaseEvent( QMouseEvent *e );
    virtual void contentsMouseMoveEvent( QMouseEvent *e );
    virtual void keyPressEvent( QKeyEvent *e );
    virtual void keyReleaseEvent( QKeyEvent *e );

private:
    bool emulateTouchscreen;
    void setDirty( const QRect& );
    int shmId;
    unsigned char *data;
    QVFbHeader *hdr;
    int viewdepth; // "faked" depth
    int rsh;
    int gsh;
    int bsh;
    int rmax;
    int gmax;
    int bmax;
    double gred, ggreen, gblue;
    QRgb* gammatable;
    QLock *qwslock;
    QTimer *timer;
    int mouseFd;
    int keyboardFd;
    int refreshRate;
    QString mousePipe;
    QString keyboardPipe;
    QAnimationWriter *animation;
    int displayid;
    double zm;
};