Qt 4.8: ledmeter.h Example File (graphicsview/portedasteroids/ledmeter.h)

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# ledmeter.h Example File

graphicsview/portedasteroids/ledmeter.h

     /****************************************************************************
     **
     ** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
     ** Contact: http://www.qt-project.org/legal
     **
     ** This file is part of the examples of the Qt Toolkit.
     **
     ** $QT_BEGIN_LICENSE:BSD$
     ** You may use this file under the terms of the BSD license as follows:
     **
     ** "Redistribution and use in source and binary forms, with or without
     ** modification, are permitted provided that the following conditions are
     ** met:
     **   * Redistributions of source code must retain the above copyright
     **     notice, this list of conditions and the following disclaimer.
     **   * Redistributions in binary form must reproduce the above copyright
     **     notice, this list of conditions and the following disclaimer in
     **     the documentation and/or other materials provided with the
     **     distribution.
     **   * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
     **     of its contributors may be used to endorse or promote products derived
     **     from this software without specific prior written permission.
     **
     **
     ** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     ** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     ** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     ** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     ** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     ** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     ** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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     ****************************************************************************/

     /*
      * KAsteroids - Copyright (c) Martin R. Jones 1997
      *
      * Part of the KDE project
      */

     #ifndef __LEDMETER_H__
     #define __LEDMETER_H__

     #include <QFrame>
     #include <QList>
     #include <QResizeEvent>

     class KALedMeter : public QFrame
     {
         Q_OBJECT
     public:
         KALedMeter( QWidget *parent );
         ~KALedMeter();

         int range() const { return mRange; }
         void setRange( int r );

         int count() const { return mCount; }
         void setCount( int c );

         int value () const { return mValue; }

         void addColorRange( int pc, const QColor &c );

     public slots:
         void setValue( int v );

     protected:
         virtual void resizeEvent( QResizeEvent * );
         virtual void paintEvent(QPaintEvent *event);
         void calcColorRanges();

     protected:
         struct ColorRange
         {
             int mPc;
             int mValue;
             QColor mColor;
         };

         int mRange;
         int mCount;
         int mCurrentCount;
         int mValue;
         QList<ColorRange*> mCRanges;
     };

     #endif