framebuffer_concepts.hpp

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#pragma once
 
#include "epaper/core/types.hpp"
#include <concepts>
#include <cstddef>
#include <span>
#include <vector>
 
namespace epaper {
 
// Forward declarations
enum class DisplayMode : std::uint8_t;
enum class Color : std::uint8_t;
enum class Orientation : std::uint8_t;
 
template <typename T>
concept FramebufferLike =
    requires(T fb, const T const_fb, std::size_t x, std::size_t y, Color color, Orientation orientation) {
      { fb.width() } -> std::same_as<std::size_t>;
 
      { fb.height() } -> std::same_as<std::size_t>;
 
      { fb.mode() } -> std::same_as<DisplayMode>;
 
      { const_fb.data() } -> std::same_as<std::span<const std::byte>>;
 
      { const_fb.get_planes() } -> std::same_as<std::vector<std::span<const std::byte>>>;
 
      { fb.set_pixel(x, y, color, orientation) } -> std::same_as<void>;
 
      { const_fb.get_pixel(x, y, orientation) } -> std::same_as<Color>;
 
      { fb.clear(color) } -> std::same_as<void>;
    };
 
} // namespace epaper