ambivalence/Source/GUI/AmbivalenceUI.h

#pragma once
#include <JuceHeader.h>

class FDNReverbAudioProcessor;

// --- Ambivalence Design System ------------------------------------------
namespace AmbivalenceColors {
    const juce::Colour Background{ 0xFF181819 };   // palette 0
    const juce::Colour Surface{ 0xFF2C2E34 };      // theme background
    const juce::Colour Panel{ 0xFF2C2E34 };        // theme background
    const juce::Colour Border{ 0xFF3B3E48 };       // selection background
    const juce::Colour Accent{ 0xFFF39660 };       // palette 6/14
    const juce::Colour AccentBlue{ 0xFF76CCE0 };   // palette 4/12
    const juce::Colour TextPrimary{ 0xFFE2E2E3 };  // foreground
    const juce::Colour TextSecondary{ 0xFF7F8490 }; // palette 8
    const juce::Colour ArcTrack{ 0xFF3B3E48 };     // selection background
    const juce::Colour ArcFill{ 0xFF76CCE0 };      // plain blue arc
    const juce::Colour Separator{ 0xFF2C2E34 };    // theme background
}

// --- Ambivalence LookAndFeel --------------------------------------------
class AmbivalenceLookAndFeel : public juce::LookAndFeel_V4
{
public:
    AmbivalenceLookAndFeel();
    void drawRotarySlider(juce::Graphics&, int x, int y, int w, int h,
        float sliderPos, float startAngle, float endAngle,
        juce::Slider&) override;
    void drawLinearSlider(juce::Graphics&, int x, int y, int w, int h,
        float sliderPos, float, float,
        juce::Slider::SliderStyle, juce::Slider&) override;
    void drawComboBox(juce::Graphics&, int w, int h, bool isDown,
        int, int, int, int, juce::ComboBox&) override;
    void positionComboBoxText(juce::ComboBox&, juce::Label&) override;
    juce::Font getLabelFont(juce::Label&) override;
    juce::Font getComboBoxFont(juce::ComboBox&) override;
    void drawGroupComponentOutline(juce::Graphics&, int w, int h,
        const juce::String&, const juce::Justification&,
        juce::GroupComponent&) override;

    float zoomScale{ 1.0f };   // pushed by the editor so fonts scale with zoom
private:
    juce::Font mainFont;
};

// --- VU Meter --------------------------------------------------------
class VUMeter : public juce::Component
{
public:
    enum class Side { Input, Output };
    VUMeter(const juce::String& label, Side side);
    void paint(juce::Graphics&) override;
    void setLevels(float l, float r) noexcept { levelL = l; levelR = r; }
    void setZoomScale(float s) noexcept { zoomScale = s; repaint(); }
private:
    juce::String label;
    Side side;
    float levelL{ 0.f }, levelR{ 0.f };
    float zoomScale{ 1.0f };
};

// --- Labelled Arc Knob -----------------------------------------------
struct ArcKnob {
    juce::Slider slider;
    juce::Label  label;
    std::unique_ptr<juce::AudioProcessorValueTreeState::SliderAttachment> attachment;

    void build(juce::AudioProcessorValueTreeState& apvts,
        const juce::String& paramID,
        const juce::String& labelText,
        juce::Component* parent,
        AmbivalenceLookAndFeel& laf);
};