signal()

void MayaFlux::Vruta::WindowEventSource::signal

(

Core::WindowEvent

event

)

Enqueue a window event and resume matching waiters.

Parameters

event

Event produced by the window backend.

Updates input state caches before dispatching.

Definition at line 7 of file WindowEventSource.cpp.

{
    if (auto* kd = std::get_if<Core::WindowEvent::KeyData>(&event.data)) {
        if (event.type == Core::WindowEventType::KEY_PRESSED) {
            m_key_states[kd->key] = true;
        } else if (event.type == Core::WindowEventType::KEY_RELEASED) {
            m_key_states[kd->key] = false;
        }
    }
 
    if (auto* bd = std::get_if<Core::WindowEvent::MouseButtonData>(&event.data)) {
        if (event.type == Core::WindowEventType::MOUSE_BUTTON_PRESSED) {
            m_button_states[bd->button] = true;
        } else if (event.type == Core::WindowEventType::MOUSE_BUTTON_RELEASED) {
            m_button_states[bd->button] = false;
        }
    }
 
    if (auto* pd = std::get_if<Core::WindowEvent::MousePosData>(&event.data)) {
        m_mouse_x = pd->x;
        m_mouse_y = pd->y;
    }
 
    const size_t resumed_before = m_resumed;
    ++m_signal_depth;
    dispatch(&event);
    --m_signal_depth;
    if (m_resumed == resumed_before) {
        m_pending_events.push_back(event);
        auto& held = m_pending_counts[static_cast<uint8_t>(event.type)];
        if (++held > k_max_pending_events) {
            auto oldest = std::ranges::find(m_pending_events, event.type, &Core::WindowEvent::type);
            m_pending_events.erase(oldest);
            --held;
        }
    }
 
    if (m_signal_depth != 0 || m_deferred_actions.empty())
        return;
 
    std::vector<std::function<void()>> deferred_actions;
    deferred_actions.swap(m_deferred_actions);
    for (auto& action : deferred_actions)
        action();
}

References MayaFlux::Core::WindowEvent::data, MayaFlux::Vruta::EventSource::dispatch(), k_max_pending_events, MayaFlux::Core::KEY_PRESSED, MayaFlux::Core::KEY_RELEASED, m_button_states, m_deferred_actions, m_key_states, m_mouse_x, m_mouse_y, m_pending_counts, m_pending_events, m_resumed, m_signal_depth, MayaFlux::Core::MOUSE_BUTTON_PRESSED, MayaFlux::Core::MOUSE_BUTTON_RELEASED, and MayaFlux::Core::WindowEvent::type.

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