brightness.h

Trolltech公司发布的图形界面操作系统。可在qt-embedded-2.3.10平台上编译为嵌入式图形界面操作系统。

/**********************************************************************
** Copyright (C) 2000-2005 Trolltech AS.  All rights reserved.
**
** This file is part of the Qtopia Environment.
** 
** This program is free software; you can redistribute it and/or modify it
** under the terms of the GNU General Public License as published by the
** Free Software Foundation; either version 2 of the License, or (at your
** option) any later version.
** 
** A copy of the GNU GPL license version 2 is included in this package as 
** LICENSE.GPL.
**
** This program is distributed in the hope that it will be useful, but
** WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
** See the GNU General Public License for more details.
**
** In addition, as a special exception Trolltech gives permission to link
** the code of this program with Qtopia applications copyrighted, developed
** and distributed by Trolltech under the terms of the Qtopia Personal Use
** License Agreement. You must comply with the GNU General Public License
** in all respects for all of the code used other than the applications
** licensed under the Qtopia Personal Use License Agreement. If you modify
** this file, you may extend this exception to your version of the file,
** but you are not obligated to do so. If you do not wish to do so, delete
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** See http://www.trolltech.com/gpl/ for GPL licensing information.
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**********************************************************************/

#ifndef BRIGHTNESS_APPLET_H
#define BRIGHTNESS_APPLET_H

#include <qtopia/qpeglobal.h>
#include <qwidget.h>
#include <qframe.h>
#include <qpixmap.h>
#include <qguardedptr.h>

class QSlider;

class BrightnessControl : public QFrame
{
    Q_OBJECT

public:
    BrightnessControl( QWidget *parent=0, const char *name=0, WFlags f=0 );

public:
    QSlider *slider;
};

class BrightnessApplet : public QWidget
{
    Q_OBJECT

public:
    BrightnessApplet( QWidget *parent = 0, const char *name=0 );
    ~BrightnessApplet();

public slots:
    void    sliderMoved(int);

private slots:
    void sysMessage(const QCString &msg, const QByteArray& data);
private:
    int	    readSystemBrightness();
    void    writeSystemBrightness(int brightness);
    void    mousePressEvent(QMouseEvent *);
    void    paintEvent(QPaintEvent*);

private:
    int			calcBrightnessValue(void);
    int			calcSliderValue(void);

    int			brightness;
    QPixmap		*brightnessPixmap;
    BrightnessControl	*bc;
};

#endif // BRIGHTNESS_APPLET_H