widget.h

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/****************************************************************************
** Original work Copyright (C) 2016 The Qt Company Ltd.
** Modified work Copyright (c) 2026 Patrik Källback
**
** @file widget.h
** @brief Main controller and UI interface for the PS-80 GrandComp Analyzer.
** * This class manages the user interaction, signal visualization, and 
** high-level orchestration of the audio analysis algorithms.
** @author Patrik Källback
** @version 1.2
** @license SPDX-License-Identifier: MIT (for modifications)
** @date 2026-02-17
****************************************************************************/
 
#ifndef WIDGET_H
#define WIDGET_H
 
#include <QAudioOutput>
#include <QMouseEvent>
#include <QPaintEvent>
#include <QWidget>
#include "audio_config.h"
#include "xyseriesiodevice.h"
#include <vector>
 
QT_BEGIN_NAMESPACE
namespace Ui {
class Widget;
}
QT_END_NAMESPACE

class Widget : public QWidget
{
    Q_OBJECT
 
public:
    explicit Widget(QWidget *parent = nullptr);

    virtual ~Widget();
 
    // Disable copy for UI controller to maintain unique ownership
    Widget(const Widget &) = delete;
    Widget &operator=(const Widget &) = delete;
 
private slots:
    void onOpenButtonClicked();
    void onSaveButtonClicked();
    void onBrowseFolderButtonClicked();
    void onComboBoxFreqCurrentTextChanged(const QString &text);

    void onPlayWavButtonClicked();
    void onPauseWavButtonClicked();
    void onPlayClipButtonClicked();
    void onPauseClipButtonClicked();

    void onFloatingClipButtonClicked();
    void onMoveLeftButtonClicked();
    void onMoveRightButtonClicked();
    void onStretchButtonClicked();
    void onShrinkedButtonClicked();
    void onFlipTimeButtonClicked();
    void onFlipPhaseButtonClicked();
 
protected:
    void paintEvent(QPaintEvent *event) override;

    void mousePressEvent(QMouseEvent *event) override;
 
private:
    void drawWavFileContents(QPainter *painter, QWidget *target, const std::vector<float> &data);
    void drawWaveformContents(QPainter *painter, QWidget *target, const std::vector<float> &data);


    void setupAudio();

    void loadWavFile(const QString &fileName);

    void updateButtonStates(); // Hjälpmetod för att styra Enabled/Disabled

    void normalizeCapturedCycle(std::vector<float> &capturedCycle);

    void waveformBackup(const int centerSample);

    void copyWaveform(std::vector<float> &dest, const std::vector<float> &source);

    void stretchWaveform(std::vector<float> &dest,
                         const std::vector<float> &source,
                         const int waveformeLen);

    void flipTimeWaveform(std::vector<float> &dest);

    void flipPhaseWaveform(std::vector<float> &dest);
 
private:
    Ui::Widget *ui; 
    Qt::CheckState m_stateFloatingClip = Qt::CheckState::Unchecked;
 
    // --- PS-80 "GrandComp" Audio Engine ---
    QAudioOutput *m_audioOutput{nullptr}; 
    XYSeriesIODevice *m_device{nullptr};  
 
    int m_lastClickSample{0}; 
    QString m_folderPath{""}; 
 
    // --- Data Buffers ---
    std::vector<float> m_fullWavData;         
    std::vector<float> m_capturedCycle;       
    std::vector<float> m_copiedCapturedCycle; 
 
    int m_waveformLen{AudioConfig::WAVESHAPE_LEN}; 
    bool m_isWaveformFlipTime{false};              
    bool m_isWaveformFlipPhase{false};             
    float m_audioFreq{
        AudioConfig::DEFAULT_FREQ}; 
};
 
#endif // WIDGET_H