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/*
* Copyright (C) 2009 Red Hat, Inc.
*
* This is part of HarfBuzz, an OpenType Layout engine library.
*
* Permission is hereby granted, without written agreement and without
* license or royalty fees, to use, copy, modify, and distribute this
* software and its documentation for any purpose, provided that the
* above copyright notice and the following two paragraphs appear in
* all copies of this software.
*
* IN NO EVENT SHALL THE COPYRIGHT HOLDER BE LIABLE TO ANY PARTY FOR
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
* ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN
* IF THE COPYRIGHT HOLDER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*
* THE COPYRIGHT HOLDER SPECIFICALLY DISCLAIMS ANY WARRANTIES, INCLUDING,
* BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND THE COPYRIGHT HOLDER HAS NO OBLIGATION TO
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*
* Red Hat Author(s): Behdad Esfahbod
*/
#ifndef HB_FONT_H
#define HB_FONT_H
#include "hb-common.h"
#include "hb-blob.h"
HB_BEGIN_DECLS
typedef struct _hb_font_callbacks_t hb_font_callbacks_t;
typedef struct _hb_unicode_callbacks_t hb_unicode_callbacks_t;
typedef struct _hb_face_t hb_face_t;
typedef struct _hb_font_t hb_font_t;
typedef hb_blob_t * (*hb_get_table_func_t) (hb_tag_t tag, void *user_data);
/*
* hb_font_callbacks_t
*/
hb_font_callbacks_t *
hb_font_callbacks_create (void);
hb_font_callbacks_t *
hb_font_callbacks_reference (hb_font_callbacks_t *fcallbacks);
unsigned int
hb_font_callbacks_get_reference_count (hb_font_callbacks_t *fcallbacks);
void
hb_font_callbacks_destroy (hb_font_callbacks_t *fcallbacks);
hb_font_callbacks_t *
hb_font_callbacks_copy (hb_font_callbacks_t *fcallbacks);
/*
void
hb_font_callbacks_set_glyph_func (hb_font_callbacks_t *fcallbacks,
hb_font_get_glyph_func_t glyph_func);
void
hb_font_callbacks_set_contour_point_func (hb_font_callbacks_t *fcallbacks,
hb_font_get_contour_point_func_t contour_point_func);
void
hb_font_callbacks_set_glyph_metrics_func (hb_font_callbacks_t *fcallbacks,
hb_font_get_glyph_metrics_func_t glyph_metrics_func);
void
hb_font_callbacks_set_kerning_func (hb_font_callbacks_t *fcallbacks,
hb_font_get_kerning_func_t kerning_func);
*/
/*
* hb_unicode_callbacks_t
*/
hb_unicode_callbacks_t *
hb_unicode_callbacks_create (void);
hb_unicode_callbacks_t *
hb_unicode_callbacks_reference (hb_unicode_callbacks_t *ucallbacks);
unsigned int
hb_unicode_callbacks_get_reference_count (hb_unicode_callbacks_t *ucallbacks);
void
hb_unicode_callbacks_destroy (hb_unicode_callbacks_t *ucallbacks);
hb_unicode_callbacks_t *
hb_unicode_callbacks_copy (hb_unicode_callbacks_t *ucallbacks);
/*
void
hb_unicode_callbacks_set_general_category_func (hb_unicode_callbacks_t *ucallbacks,
hb_unicode_get_general_category_func_t general_category_func);
void
hb_unicode_callbacks_set_combining_class_func (hb_unicode_callbacks_t *ucallbacks,
hb_unicode_get_combining_class_func_t combining_class_func);
void
hb_unicode_callbacks_set_mirroring_char_func (hb_unicode_callbacks_t *ucallbacks,
hb_unicode_get_mirroring_char_func_t mirroring_char_func);
void
hb_unicode_callbacks_set_script_func (hb_unicode_callbacks_t *ucallbacks,
hb_unicode_get_script_func_t script_func);
void
hb_unicode_callbacks_set_eastasian_width_func (hb_unicode_callbacks_t *ucallbacks,
hb_unicode_get_eastasian_width_func_t eastasian_width_func);
*/
/*
* hb_face_t
*/
hb_face_t *
hb_face_create_for_data (hb_blob_t *blob,
unsigned int index);
/* calls destory() when not needing user_data anymore */
hb_face_t *
hb_face_create_for_tables (hb_get_table_func_t get_table,
hb_destroy_func_t destroy,
void *user_data);
hb_face_t *
hb_face_reference (hb_face_t *face);
unsigned int
hb_face_get_reference_count (hb_face_t *face);
void
hb_face_destroy (hb_face_t *face);
void
hb_face_set_font_callbacks (hb_face_t *face,
hb_font_callbacks_t *fcallbacks);
void
hb_face_set_unicode_callbacks (hb_face_t *face,
hb_unicode_callbacks_t *ucallbacks);
hb_blob_t *
hb_face_get_table (hb_face_t *face,
hb_tag_t tag);
/*
* hb_font_t
*/
/* Fonts are very light-weight objects */
hb_font_t *
hb_font_create (hb_face_t *face);
hb_font_t *
hb_font_reference (hb_font_t *font);
unsigned int
hb_font_get_reference_count (hb_font_t *font);
void
hb_font_destroy (hb_font_t *font);
hb_face_t *
hb_font_get_face (hb_font_t *font);
/*
* XXX
* should we decompose this to units_per_EM and font-size?
* units_per_EM setting then can go into the face, or better,
* read from the 'head' table.
*
* Then we either need size+shape like freetype does, or a full
* matrix.
*/
void
hb_font_set_scale (hb_font_t *font,
hb_16dot16_t x_scale,
hb_16dot16_t y_scale);
/*
* A zero value means "no hinting in that direction"
*/
void
hb_font_set_ppem (hb_font_t *font,
unsigned int x_ppem,
unsigned int y_ppem);
HB_END_DECLS
#endif /* HB_FONT_H */
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