/* -*- c++ -*- */
/* + + +   This Software is released under the "Simplified BSD License"  + + +
 * Copyright 2010 Moe Wheatley. All rights reserved.
 * Copyright 2011-2013 Alexandru Csete OZ9AEC.
 *
 * Redistribution and use in source and binary forms, with or without modification, are
 * permitted provided that the following conditions are met:
 *
 *    1. Redistributions of source code must retain the above copyright notice, this list of
 *       conditions and the following disclaimer.
 *
 *    2. 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.
 *
 * THIS SOFTWARE IS PROVIDED BY Moe Wheatley ``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 Moe Wheatley 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 OF THIS SOFTWARE, EVEN IF
 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * The views and conclusions contained in the software and documentation are those of the
 * authors and should not be interpreted as representing official policies, either expressed
 * or implied, of Moe Wheatley.
 */
#ifndef METER_H
#define METER_H

#include <QtGui>
#include <QFrame>
#include <QImage>


class CMeter : public QFrame
{
    Q_OBJECT

public:
    explicit CMeter(QWidget *parent = 0);
    explicit CMeter(float min_level = -100.0, float max_level = 10.0, QWidget *parent = 0);
    ~CMeter();

    QSize minimumSizeHint() const;
    QSize sizeHint() const;

    void setMin(float min_level);
    void setMax(float max_level);
    void setRange(float min_level, float max_level);

    void draw();
    void UpdateOverlay(){DrawOverlay();}

signals:

public slots:
    void setLevel(float dbfs);

protected:
    //re-implemented widget event handlers
    void paintEvent(QPaintEvent *event);
    void resizeEvent(QResizeEvent* event);

private:
    void DrawOverlay();
    QPixmap m_2DPixmap;
    QPixmap m_OverlayPixmap;
    QSize m_Size;
    QString m_Str;
    int m_Slevel;
    int m_dBm;

    float d_alpha_decay;
    float d_alpha_rise;
};

#endif // METER_H
