jamulus/src/levelmeter.h

/******************************************************************************\
 * Copyright (c) 2004-2020
 *
 * Author(s):
 *  Volker Fischer
 *
 ******************************************************************************
 *
 * 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.
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc., 
 * 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
 *
\******************************************************************************/

#pragma once

#include <QFrame>
#include <QPixmap>
#include <QTimer>
#include <QLayout>
#include <QProgressBar>
#include <QStackedLayout>
#include "util.h"
#include "global.h"


/* Definitions ****************************************************************/
#define NUM_LEDS_INCL_CLIP_LED           ( NUM_STEPS_LED_BAR + 1 )
#define CLIP_IND_TIME_OUT_MS             20000


/* Classes ********************************************************************/
class CLevelMeter : public QWidget
{
    Q_OBJECT

public:
    enum ELevelMeterType
    {
        MT_LED,
        MT_BAR,
        MT_SLIM_BAR
    };

    CLevelMeter ( QWidget* parent = nullptr, Qt::WindowFlags f = nullptr );
    virtual ~CLevelMeter();

    void SetValue ( const double dValue );
    void SetLevelMeterType ( const ELevelMeterType eNType );

protected:
    class cLED
    {
    public:
        enum ELightColor
        {
            RL_DISABLED,
            RL_BLACK,
            RL_GREEN,
            RL_YELLOW,
            RL_RED
        };

        cLED ( QWidget* parent );

        void        SetColor ( const ELightColor eNewColor );
        ELightColor GetColor() { return eCurLightColor; };
        QLabel*     GetLabelPointer() { return pLEDLabel; }

    protected:
        QPixmap     BitmCubeRoundBlack;
        QPixmap     BitmCubeRoundGreen;
        QPixmap     BitmCubeRoundYellow;
        QPixmap     BitmCubeRoundRed;

        ELightColor eCurLightColor;
        QLabel*     pLEDLabel;
    };

    virtual void mousePressEvent ( QMouseEvent* ) override { ClipReset(); }

    void SetBarMeterStyleAndClipStatus ( const ELevelMeterType eNType,
                                         const bool            bIsClip );

    QStackedLayout* pStackedLayout;
    ELevelMeterType eLevelMeterType;
    CVector<cLED*>  vecpLEDs;
    QProgressBar*   pBarMeter;

    QTimer          TimerClip;

public slots:
    void ClipReset();
};