text.hpp

/*
 * MIT License
 *
 * Copyright (c) 2024 Giovanni Santini
 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 *
 */
 
#pragma once
 
#include <ft2build.h>
#include <glm/glm.hpp>
#include <glm/gtc/matrix_transform.hpp>
#include <glm/gtc/type_ptr.hpp>
#include <map>
#include <string>
#include FT_FREETYPE_H
 
#include "engine.hpp"
 
namespace brenta
{
 
namespace types
{
 
struct character
{
    unsigned int texture_id; // ID handle of the glyph texture
    glm::ivec2 size;         // Size of glyph
    glm::ivec2 bearing;      // Offset from baseline to left/top of glyph
    unsigned int advance;    // Offset to advance to next glyph
};
 
} // namespace types
 
class text
{
  public:
    static std::map<char, types::character> characters;
 
    text() = delete;
    static void init();
 
    static void load(std::string font_name, unsigned int font_size);
    static void render_text(std::string text, float x, float y, float scale,
                            glm::vec3 color);
 
  private:
    static types::shader_name_t text_shader;
    static types::vao text_vao;
    static types::buffer text_vbo;
};
 
} // namespace brenta