component_types.cppm

Go to the documentation of this file.

// Copyright (c) 2024, Víctor Castillo Agüero.
// SPDX-License-Identifier: GPL-3.0-or-later
 
export module cydui.components:type;
 
import std;
 
export import reflect;
export import quantify;
 
export import cydui.dimensions;
 
export namespace cydui::components {
  template<std::size_t N>
  struct str_literal_t {
    constexpr str_literal_t(const char (& str)[N]) {
      std::copy_n(str, N, value);
    }
 
    char value[N];
  };
 
 
  using dimension_t = dimensions::dimension<dimensions::screen_measure>;
  using dimension_parameter_t = dimensions::parameter<dimensions::screen_measure>;
  using dimension_ctx_t = dimensions::context<dimensions::screen_measure>;
 
  struct component_state_t;
  using component_state_ref = std::shared_ptr<component_state_t>;
  struct component_base_t;
  struct event_handler_t;
 
  template <typename EVH>
  concept ComponentEventHandlerConcept =
    requires(EVH evh) { std::is_base_of_v<event_handler_t, EVH>; };
 
  template <typename T>
  struct component_t;
 
  template <typename C>
  concept ComponentConcept = requires(C c) {
    requires std::
      derived_from<std::remove_reference_t<C>, component_t<C>>;
    typename C::props_t;
    typename C::state_t;
    typename C::event_handler_t;
  };
 
  struct internal_relations_t {
    dimension_t cx{};
    dimension_t cy{};
    dimension_t cw{};
    dimension_t ch{};
  };
 
  struct component_dimensional_relations_t {
    dimension_t& x;
    dimension_t& y;
    dimension_t& w;
    dimension_t& h;
    bool&        fixed_w;
    bool&        fixed_h;
 
    dimension_t& cx;
    dimension_t& cy;
    dimension_t& cw;
    dimension_t& ch;
 
    dimension_t& margin_top;
    dimension_t& margin_bottom;
    dimension_t& margin_left;
    dimension_t& margin_right;
 
    dimension_t& padding_top;
    dimension_t& padding_bottom;
    dimension_t& padding_left;
    dimension_t& padding_right;
  };
} // namespace cydui::components