bwidgets/inc/basic_widgets/w/button.hpp

#ifndef BWIDGETS_BUTTON_HPP
#define BWIDGETS_BUTTON_HPP

#include <functional>
#include <string>

#include <basic_widgets/core/type/color.hpp>
#include <basic_widgets/w/caption.hpp>
#include <basic_widgets/w/feat/mouse_handler.hpp>

namespace bwidgets
{
    class Button : public Widget,
                   public FontHandler,
                   public MouseHandler
    {
    protected:
        Caption  _caption;
        SDL_Rect _caption_area {};
        Color    _color_foreground = default_color_fg;

        void _handle_focus_change(bool) override {}
        void _handle_font_change(const std::shared_ptr<Font>&) override;
        void _handle_font_color_change(Color, Color)
        override;
        void _handle_geometry_change(const SDL_Rect&) override;
        void _handle_renderer_change(const std::shared_ptr<Renderer>&) override;
        void _handle_rendering() override;
        void _on_push(bool) override;

    public:
        static const Color default_color_bg;
        static const Color default_color_bg_hover;
        static const Color default_color_fg;

        std::function<Color(int, int, float)> border_gradient;
        Size                                  border_size {3, 3};
        Color                                 color_bg       = default_color_bg;
        Color                                 color_bg_hover = default_color_bg_hover;

        Button(Widget* parent = nullptr) noexcept;
        Button(const Button&) = delete;
        Button(Button&&)      = delete;
        ~Button() override    = default;
        auto operator=(const Button&) = delete;
        auto operator=(Button&&) = delete;

        [[nodiscard]] auto size() const noexcept -> Size override;

        [[nodiscard]] virtual auto text() const noexcept -> const std::string&;
        virtual auto               text(const std::string&) -> Button*;
    };
}

#endif