SpectrumAudioComponent.h

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/* Copyright (c) 2025, Christian Ahrens
 *
 * This file is part of Mema <https://github.com/ChristianAhrens/Mema>
 *
 * This tool is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License version 3.0 as published
 * by the Free Software Foundation.
 *
 * This tool 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 Lesser General Public License for more
 * details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this tool; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */
 
#pragma once
 
#include <JuceHeader.h>
 
#include "../MemaProcessorEditor/AbstractAudioVisualizer.h"
 
namespace Mema
{
 
class CustomPaintingAudioVisualiserComponent;
 
class SpectrumAudioComponent    :   public AbstractAudioVisualizer
{
public:
    struct PlotPoints
    {
        std::vector<float> peaks;
        std::vector<float> holds;
        float minFreq;
        float maxFreq;
        float freqRes;
    };
 
public:
    //==============================================================================
    SpectrumAudioComponent();
    ~SpectrumAudioComponent();
 
    //==============================================================================
    void setNumVisibleChannels(int numChannels);
    int getNumVisibleChannels();
    
    //==============================================================================
    void paint (juce::Graphics&) override;
    void resized() override;
    void lookAndFeelChanged() override;
    
    //==============================================================================
    void processingDataChanged(AbstractProcessorData *data) override;
 
private:
    //==============================================================================
    std::unique_ptr<juce::DrawableButton>   m_chNumSelButton;
    std::vector<PlotPoints>                 m_plotPoints;
 
    //==============================================================================
    int m_numAvailableChannels = 0;
    int m_numVisibleChannels = 1;
    int m_legendWidth = 20;
 
    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (SpectrumAudioComponent)
};
 
 
}