kc3-lang/kc3/libc3_window/sdl2/gl_font.c

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• Hash : 75270fe7
  Author : Thomas de Grivel
  Date : 2024-03-24T14:53:08
  

  move libc3/window to libc3_window, shorter build messages and build log for libc3 (see configure)

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• libc3_window/sdl2/gl_font.c

• /* c3
   * Copyright 2022-2024 kmx.io <contact@kmx.io>
   *
   * Permission is hereby granted to use this software granted the above
   * copyright notice and this permission paragraph are included in all
   * copies and substantial portions of this software.
   *
   * THIS SOFTWARE IS PROVIDED "AS-IS" WITHOUT ANY GUARANTEE OF
   * PURPOSE AND PERFORMANCE. IN NO EVENT WHATSOEVER SHALL THE
   * AUTHOR BE CONSIDERED LIABLE FOR THE USE AND PERFORMANCE OF
   * THIS SOFTWARE.
   */
  #include <libc3/c3.h>
  #include "gl_font.h"
  
  FT_Library g_ft = {0};
  
  void gl_font_clean (s_gl_font *font)
  {
    assert(font);
    FT_Done_Face(font->ft_face);
    str_clean(&font->path);
    str_clean(&font->real_path);
  }
  
  s_gl_font * gl_font_init (s_gl_font *font, const char *path,
                            f32 point_per_pixel)
  {
    s_gl_font tmp = {0};
    assert(font);
    assert(path);
    str_init_copy_1(&tmp.path, path);
    if (! file_search(&tmp.path, sym_1("r"), &tmp.real_path)) {
      err_write_1("gl_font_init: file not found: ");
      err_puts(path);
      str_clean(&tmp.path);
      return NULL;
    }
    assert(glGetError() == GL_NO_ERROR);
    if (FT_New_Face(g_ft, tmp.real_path.ptr.pchar, 0, &tmp.ft_face)) {
      err_write_1("gl_font_init: error loading font: ");
      err_puts(tmp.real_path.ptr.pchar);
      str_clean(&tmp.path);
      str_clean(&tmp.real_path);
      return NULL;
    }
    tmp.point_per_pixel = point_per_pixel;
    *font = tmp;
    return font;
  }
  
  void gl_font_set_size (s_gl_font *font, f32 point_size)
  {
    f32 size;
    size = point_size / font->point_per_pixel;
    FT_Set_Pixel_Sizes(font->ft_face, 0, size);
  }
  

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