bwidgets/inc/basic_widgets/w/base/layout.hpp

#ifndef BWIDGETS_LAYOUT_HPP_
#define BWIDGETS_LAYOUT_HPP_

#include <functional>
#include <vector>

#include <basic_widgets/core/type/size.hpp>
#include <basic_widgets/w/base/widget.hpp>

namespace bwidgets::core
{
    struct Renderer;
}

namespace bwidgets::widget
{
    class Layout : public Widget
    {
    protected:
        std::vector<Widget*> _widgets;

        void _handle_geometry_change(const SDL_Rect& /*unused*/) noexcept override;
        void _handle_renderer_change(core::Renderer* /*unused*/) override;
        void _handle_rendering() override;
        virtual void _update_layout(const SDL_Rect&) noexcept = 0;

    public:
        core::Size margins {8, 8}; // NOLINT(readability-magic-numbers)

        ~Layout() noexcept override;

        virtual auto add_widget(Widget*) -> Layout*;
        virtual void for_widgets(const std::function<void(Widget*)>&);
        auto handle_event(const SDL_Event&) // NOLINT(readability-named-parameter)
          -> Layout* override;

        [[nodiscard]] auto size() const noexcept -> core::Size override = 0;
    };
}

#endif