glyph_metrics.hpp

// Copyright Take Vos 2019, 2021.
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at https://www.boost.org/LICENSE_1_0.txt)
 
#pragma once
 
#include "../utility/utility.hpp"
#include "../geometry/geometry.hpp"
#include "../macros.hpp"
#include <compare>
 
hi_export_module(hikogui.font.glyph_metrics);
 
hi_export namespace hi::inline v1 {

hi_export struct glyph_metrics {
    aarectangle bounding_rectangle = {};

    float left_side_bearing = 0.0f;

    float right_side_bearing = 0.0f;

    float advance = 0.0f;
 
    glyph_metrics() noexcept = default;
    glyph_metrics(glyph_metrics const &) noexcept = default;
    glyph_metrics(glyph_metrics &&) noexcept = default;
    glyph_metrics &operator=(glyph_metrics const &) noexcept = default;
    glyph_metrics &operator=(glyph_metrics &&) noexcept = default;

    [[nodiscard]] constexpr friend glyph_metrics operator*(float const &lhs, glyph_metrics const &rhs) noexcept
    {
        glyph_metrics r;
        r.bounding_rectangle = scale2(lhs) * rhs.bounding_rectangle;
        r.left_side_bearing = lhs * rhs.left_side_bearing;
        r.right_side_bearing = lhs * rhs.right_side_bearing;
        r.advance = lhs * rhs.advance;
        return r;
    }
};
 
} // namespace hi::inline v1