sm-26/Source/JoystickPad.h

#pragma once

#include <JuceHeader.h>

// Small flat circular button matching the joystick pad's dark style.
class RoundNavButton : public juce::Button
{
public:
    explicit RoundNavButton (const juce::String& label) : juce::Button (label) {}

    void paintButton (juce::Graphics& g, bool isDown, bool isOver) override
    {
        const float w = (float) getWidth();
        const float h = (float) getHeight();
        const float cx = w * 0.5f;
        const float cy = h * 0.5f;
        const float r  = juce::jmin (w, h) * 0.5f - 1.0f;

        g.fillAll (juce::Colour (0xFF000000));

        g.setColour (isDown ? juce::Colour (0xFFECECEC) : juce::Colour (0xFF151515));
        g.fillEllipse (cx - r, cy - r, r * 2.0f, r * 2.0f);

        g.setColour (isDown ? juce::Colour (0xFFECECEC) : juce::Colour (0xFF242424));
        g.drawEllipse (cx - r, cy - r, r * 2.0f, r * 2.0f, 1.0f);

        g.setFont (juce::Font (juce::FontOptions { juce::Font::getDefaultMonospacedFontName(),
                                                   12.0f, isDown ? juce::Font::bold : juce::Font::plain }));
        g.setColour (isDown ? juce::Colour (0xFF0A0A0A) : juce::Colour (0xFF9A9A9A));
        g.drawText (getButtonText(), juce::Rectangle<float> (0, 0, w, h), juce::Justification::centred);
    }
};

// A flat dark virtual-analog joystick pad. A circular well holds four
// quarter-circle buttons (up/down/left/right). Holding a direction glows
// the matching quarter and emits repeat actions like a gamepad D-pad.
class JoystickPad : public juce::Component, private juce::Timer
{
public:
    enum Direction : int { None = -1, Up = 0, Down = 1, Left = 2, Right = 3 };

    JoystickPad();
    ~JoystickPad() override = default;

    void paint (juce::Graphics&) override;
    void mouseDown (const juce::MouseEvent&) override;
    void mouseDrag (const juce::MouseEvent&) override;
    void mouseUp (const juce::MouseEvent&) override;

    // Called on press (immediately) and then on repeat while held.
    std::function<void (int direction)> onAction;

    void setRepeatSpeed (int initialDelayMs, int repeatMs);

private:
    void timerCallback() override;
    void beginHold (int direction);
    void endHold();
    int directionFrom (const juce::MouseEvent&) const;

    Direction active = None;
    int initialDelayMs = 250;
    int repeatMs = 50;

    int64 holdStartMs = 0;
    int64 lastFireMs = 0;
    bool repeatsStarted = false;

    JUCE_DECLARE_NON_COPYABLE_WITH_LEAK_DETECTOR (JoystickPad)
};