kc3-lang/kc3/libc3/window/cairo/cairo_font.c

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• Hash : 049b8992
  Author : Thomas de Grivel
  Date : 2023-12-13T02:07:46
  

  make demo_asan

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• libc3/window/cairo/cairo_font.c

• /* c3
   * Copyright 2022,2023 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 "cairo_font.h"
  
  static FT_Library *g_cairo_font_ft = NULL;
  
  static FT_Library * cairo_font_ft (void);
  
  void c3_window_cairo_font_clean (void)
  {
    if (g_cairo_font_ft) {
      FT_Done_FreeType(*g_cairo_font_ft);
      free(g_cairo_font_ft);
    }
  }
  
  void cairo_font_clean (s_cairo_font *font)
  {
    assert(font);
    cairo_font_face_destroy(font->cairo_font_face);
    FT_Done_Face(font->ft_face);
    str_clean(&font->path);
    str_clean(&font->real_path);
  }
  
  static FT_Library * cairo_font_ft (void)
  {
    if (! g_cairo_font_ft) {
      g_cairo_font_ft = malloc(sizeof(FT_Library));
      if (! g_cairo_font_ft) {
        err_puts("cairo_font_ft: failed to allocate memory");
        return NULL;
      }
      if (FT_Init_FreeType(g_cairo_font_ft)) {
        err_puts("cairo_font_ft: error initializing FreeType");
        free(g_cairo_font_ft);
        g_cairo_font_ft = NULL;
        return NULL;
      }
    }
    return g_cairo_font_ft;
  }
  
  s_cairo_font * cairo_font_init (s_cairo_font *font, const s8 *path)
  {
    FT_Library *ft;
    assert(font);
    assert(path);
    if (! (ft = cairo_font_ft()))
      return NULL;
    str_init_copy_1(&font->path, path);
    if (! file_search(&font->path, sym_1("r"), &font->real_path)) {
      err_write_1("cairo_font_init: file not found: ");
      err_puts(path);
      str_clean(&font->path);
      return NULL;
    }
    if (FT_New_Face(*ft, font->real_path.ptr.ps8, 0, &font->ft_face)) {
      err_write_1("cairo_font_init: error loading font: ");
      err_puts(font->real_path.ptr.ps8);
      str_clean(&font->path);
      str_clean(&font->real_path);
      return NULL;
    }
    font->cairo_font_face = cairo_ft_font_face_create_for_ft_face
      (font->ft_face, 0);
    return font;
  }
  
  void cairo_set_font (cairo_t *cr, const s_cairo_font *font)
  {
    cairo_set_font_face(cr, font->cairo_font_face);
  }
  

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