monoslicer/Source/PianoRollDisplay.h

#pragma once
#include <juce_audio_processors/juce_audio_processors.h>
#include "SliceManager.h"
#include <functional>

class PianoRollDisplay : public juce::Component,
                         public juce::Timer
{
public:
    static constexpr int numRows = 12;
    static constexpr int baseMidiNote = 60;
    static constexpr float keyWidth = 50.0f;

    PianoRollDisplay(SliceManager& sm);
    ~PianoRollDisplay() override;

    void paint(juce::Graphics& g) override;
    void resized() override;
    void timerCallback() override;
    void mouseDown(const juce::MouseEvent& e) override;
    void mouseUp(const juce::MouseEvent& e) override;

    void setActiveSlice(int index);
    void setSelectedSlice(int index);
    void setTotalSamples(int total);
    void setOnKeyClick(std::function<void(int sliceIndex)> callback);

private:
    SliceManager& sliceManager;
    int activeSlice = -1;
    int selectedSlice = -1;
    int totalSamples = 0;
    int pressedKey = -1;

    std::function<void(int)> onKeyClick;

    juce::Colour sliceColour(int sliceIndex) const;
    int rowToSliceIndex(int row) const;

    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR(PianoRollDisplay)
};