harfbuzz/src/hb-ot-layout-private.hh

124 lines
3.2 KiB
C++
Raw Normal View History

2008-01-24 09:11:09 +01:00
/*
2009-05-25 09:22:19 +02:00
* Copyright (C) 2007,2008,2009 Red Hat, Inc.
2008-01-24 09:11:09 +01:00
*
2010-04-22 06:11:43 +02:00
* This is part of HarfBuzz, a text shaping library.
2008-01-24 09:11:09 +01:00
*
* 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_OT_LAYOUT_PRIVATE_H
#define HB_OT_LAYOUT_PRIVATE_H
#include "hb-private.h"
2009-08-02 21:20:22 +02:00
2008-01-24 09:11:09 +01:00
#include "hb-ot-layout.h"
2009-08-02 21:20:22 +02:00
#include "hb-font-private.hh"
#include "hb-buffer-private.hh"
2008-01-24 09:11:09 +01:00
2008-01-25 01:38:56 +01:00
HB_BEGIN_DECLS
2009-04-16 04:56:15 +02:00
typedef unsigned int hb_ot_layout_class_t;
2008-01-24 09:54:09 +01:00
2009-08-02 23:41:36 +02:00
/*
* hb_ot_layout_t
*/
struct hb_ot_layout_t
2009-05-20 05:58:54 +02:00
{
2009-08-04 04:01:47 +02:00
hb_blob_t *gdef_blob;
hb_blob_t *gsub_blob;
hb_blob_t *gpos_blob;
2009-05-16 00:54:53 +02:00
const struct GDEF *gdef;
const struct GSUB *gsub;
2009-05-18 23:09:33 +02:00
const struct GPOS *gpos;
2009-05-16 00:54:53 +02:00
2009-05-20 05:58:54 +02:00
struct
{
2009-05-16 00:54:53 +02:00
unsigned char *klasses;
unsigned int len;
} new_gdef;
2009-08-02 23:41:36 +02:00
};
2009-05-18 23:09:33 +02:00
struct hb_ot_layout_context_t
2009-08-02 23:41:36 +02:00
{
hb_face_t *face;
2009-08-02 23:41:36 +02:00
hb_font_t *font;
2009-08-02 23:41:36 +02:00
union info_t
{
struct gpos_t
{
unsigned int last; /* the last valid glyph--used with cursive positioning */
hb_position_t anchor_x; /* the coordinates of the anchor point */
hb_position_t anchor_y; /* of the last valid glyph */
} gpos;
} info;
/* Convert from font-space to user-space */
/* XXX div-by-zero */
inline hb_position_t scale_x (int16_t v) { return (int64_t) this->font->x_scale * v / this->face->head_table->unitsPerEm; }
inline hb_position_t scale_y (int16_t v) { return (int64_t) this->font->y_scale * v / this->face->head_table->unitsPerEm; }
2009-05-16 00:54:53 +02:00
};
HB_INTERNAL hb_ot_layout_t *
_hb_ot_layout_new (hb_face_t *face);
2010-05-13 05:22:55 +02:00
HB_INTERNAL void
_hb_ot_layout_free (hb_ot_layout_t *layout);
2008-01-24 12:03:45 +01:00
2008-01-28 03:19:51 +01:00
/*
* GDEF
*/
2009-05-25 09:30:31 +02:00
HB_INTERNAL hb_bool_t
_hb_ot_layout_has_new_glyph_classes (hb_face_t *face);
2009-04-16 04:56:15 +02:00
2009-05-25 09:30:31 +02:00
HB_INTERNAL void
_hb_ot_layout_set_glyph_property (hb_face_t *face,
2009-04-16 04:56:15 +02:00
hb_codepoint_t glyph,
unsigned int property);
2008-01-25 01:13:50 +01:00
2009-08-02 23:41:36 +02:00
HB_INTERNAL void
_hb_ot_layout_set_glyph_class (hb_face_t *face,
2009-08-02 23:41:36 +02:00
hb_codepoint_t glyph,
hb_ot_layout_glyph_class_t klass);
2009-05-25 09:30:31 +02:00
HB_INTERNAL hb_bool_t
_hb_ot_layout_check_glyph_property (hb_face_t *face,
2009-08-02 04:53:04 +02:00
hb_internal_glyph_info_t *ginfo,
unsigned int lookup_flags,
unsigned int *property);
HB_INTERNAL hb_bool_t
_hb_ot_layout_skip_mark (hb_face_t *face,
hb_internal_glyph_info_t *ginfo,
unsigned int lookup_flags,
unsigned int *property);
2009-05-24 21:01:16 +02:00
HB_END_DECLS
2008-01-24 09:11:09 +01:00
#endif /* HB_OT_LAYOUT_PRIVATE_H */