text.hpp

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/*
 * Copyright (C) 2023  Christopher J. Howard
 *
 * This file is part of Antkeeper source code.
 *
 * Antkeeper source code is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * Antkeeper source code is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Antkeeper source code.  If not, see <http://www.gnu.org/licenses/>.
 */
 
#ifndef ANTKEEPER_SCENE_TEXT_HPP
#define ANTKEEPER_SCENE_TEXT_HPP
 
#include <engine/scene/object.hpp>
#include <engine/math/vector.hpp>
#include <engine/gl/vertex-array.hpp>
#include <engine/gl/vertex-buffer.hpp>
#include <engine/render/material.hpp>
#include <engine/type/bitmap-font.hpp>
#include <engine/type/text-direction.hpp>
 
namespace scene {
 
class text: public object<text>
{
public:
    text();
    
    void render(render::context& ctx) const override;
    
    void refresh();
    
    void set_material(std::shared_ptr<render::material> material);
    
    void set_font(const type::bitmap_font* font);
    
    void set_direction(type::text_direction direction);
    
    void set_content(const std::string& content);
    
    void set_color(const math::fvec4& color);
    
    [[nodiscard]] inline const std::shared_ptr<render::material>& get_material() const noexcept
    {
        return m_render_op.material;
    }
    
    [[nodiscard]] inline const type::bitmap_font* get_font() const noexcept
    {
        return m_font;
    }
    
    [[nodiscard]] inline const type::text_direction& get_direction() const noexcept
    {
        return m_direction;
    }
    
    [[nodiscard]] inline const std::string& get_content() const noexcept
    {
        return m_content_u8;
    }
    
    [[nodiscard]] inline const math::fvec4& get_color() const noexcept
    {
        return m_color;
    }
    
    [[nodiscard]] inline const aabb_type& get_bounds() const noexcept override
    {
        return m_world_bounds;
    }
 
private:
    void update_content();
    void update_color();
    void transformed() override;
    
    mutable render::operation m_render_op;
    aabb_type m_local_bounds{{0.0f, 0.0f, 0.0f}, {0.0f, 0.0f, 0.0f}};
    aabb_type m_world_bounds{{0.0f, 0.0f, 0.0f}, {0.0f, 0.0f, 0.0f}};
    const type::bitmap_font* m_font{nullptr};
    type::text_direction m_direction{type::text_direction::ltr};
    std::string m_content_u8;
    std::u32string m_content_u32;
    math::fvec4 m_color{1.0f, 0.0f, 1.0f, 1.0f};
    std::vector<std::byte> m_vertex_data;
    std::unique_ptr<gl::vertex_array> m_vertex_array;
    std::unique_ptr<gl::vertex_buffer> m_vertex_buffer;
};
 
} // namespace scene
 
#endif // ANTKEEPER_SCENE_TEXT_HPP