127 lines
3.7 KiB
C
127 lines
3.7 KiB
C
/*
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* Copyright © 2009 Red Hat, Inc.
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* Copyright © 2015 Google, Inc.
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*
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* This is part of HarfBuzz, a text shaping library.
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*
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* Permission is hereby granted, without written agreement and without
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* license or royalty fees, to use, copy, modify, and distribute this
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* software and its documentation for any purpose, provided that the
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* above copyright notice and the following two paragraphs appear in
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* all copies of this software.
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*
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* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
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* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
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* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
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* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
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* DAMAGE.
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*
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* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
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* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
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* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
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* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
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*
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* Red Hat Author(s): Behdad Esfahbod
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* Google Author(s): Behdad Esfahbod
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*/
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#ifndef HB_FT_H
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#define HB_FT_H
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#include "hb.h"
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#include <ft2build.h>
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#include FT_FREETYPE_H
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HB_BEGIN_DECLS
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/*
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* Note: FreeType is not thread-safe.
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* Hence, these functions are not either.
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*/
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/*
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* hb-face from ft-face.
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*/
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/* This one creates a new hb-face for given ft-face.
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* When the returned hb-face is destroyed, the destroy
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* callback is called (if not NULL), with the ft-face passed
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* to it.
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*
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* The client is responsible to make sure that ft-face is
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* destroyed after hb-face is destroyed.
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*
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* Most often you don't want this function. You should use either
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* hb_ft_face_create_cached(), or hb_ft_face_create_referenced().
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* In particular, if you are going to pass NULL as destroy, you
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* probably should use (the more recent) hb_ft_face_create_referenced()
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* instead.
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*/
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HB_EXTERN hb_face_t *
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hb_ft_face_create (FT_Face ft_face,
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hb_destroy_func_t destroy);
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/* This version is like hb_ft_face_create(), except that it caches
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* the hb-face using the generic pointer of the ft-face. This means
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* that subsequent calls to this function with the same ft-face will
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* return the same hb-face (correctly referenced).
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*
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* Client is still responsible for making sure that ft-face is destroyed
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* after hb-face is.
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*/
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HB_EXTERN hb_face_t *
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hb_ft_face_create_cached (FT_Face ft_face);
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/* This version is like hb_ft_face_create(), except that it calls
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* FT_Reference_Face() on ft-face, as such keeping ft-face alive
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* as long as the hb-face is.
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*
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* This is the most convenient version to use. Use it unless you have
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* very good reasons not to.
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*/
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HB_EXTERN hb_face_t *
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hb_ft_face_create_referenced (FT_Face ft_face);
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/*
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* hb-font from ft-face.
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*/
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/*
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* Note:
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*
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* Set face size on ft-face before creating hb-font from it.
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* Otherwise hb-ft would NOT pick up the font size correctly.
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*/
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/* See notes on hb_ft_face_create(). Same issues re lifecycle-management
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* apply here. Use hb_ft_font_create_referenced() if you can. */
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HB_EXTERN hb_font_t *
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hb_ft_font_create (FT_Face ft_face,
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hb_destroy_func_t destroy);
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/* See notes on hb_ft_face_create_referenced() re lifecycle-management
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* issues. */
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HB_EXTERN hb_font_t *
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hb_ft_font_create_referenced (FT_Face ft_face);
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HB_EXTERN FT_Face
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hb_ft_font_get_face (hb_font_t *font);
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HB_EXTERN void
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hb_ft_font_set_load_flags (hb_font_t *font, int load_flags);
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HB_EXTERN int
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hb_ft_font_get_load_flags (hb_font_t *font);
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/* Makes an hb_font_t use FreeType internally to implement font functions. */
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HB_EXTERN void
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hb_ft_font_set_funcs (hb_font_t *font);
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HB_END_DECLS
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#endif /* HB_FT_H */
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