178 lines
5.6 KiB
C++
178 lines
5.6 KiB
C++
/*
|
|
* Copyright (C) 1998-2004 David Turner and Werner Lemberg
|
|
* Copyright (C) 2004,2007,2009,2010 Red Hat, Inc.
|
|
*
|
|
* This is part of HarfBuzz, a text shaping 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): Owen Taylor, Behdad Esfahbod
|
|
*/
|
|
|
|
#ifndef HB_BUFFER_PRIVATE_HH
|
|
#define HB_BUFFER_PRIVATE_HH
|
|
|
|
#include "hb-private.h"
|
|
#include "hb-buffer.h"
|
|
#include "hb-unicode-private.h"
|
|
|
|
HB_BEGIN_DECLS
|
|
|
|
|
|
#define HB_BUFFER_GLYPH_PROPERTIES_UNKNOWN 0xFFFF
|
|
|
|
|
|
typedef struct _hb_internal_glyph_info_t {
|
|
hb_codepoint_t codepoint;
|
|
hb_mask_t mask;
|
|
uint32_t cluster;
|
|
uint16_t component;
|
|
uint16_t lig_id;
|
|
uint32_t gproperty;
|
|
} hb_internal_glyph_info_t;
|
|
|
|
typedef struct _hb_internal_glyph_position_t {
|
|
hb_position_t x_advance;
|
|
hb_position_t y_advance;
|
|
hb_position_t x_offset;
|
|
hb_position_t y_offset;
|
|
uint32_t back : 16; /* number of glyphs to go back
|
|
for drawing current glyph */
|
|
int32_t cursive_chain : 16; /* character to which this connects,
|
|
may be positive or negative */
|
|
} hb_internal_glyph_position_t;
|
|
|
|
ASSERT_STATIC (sizeof (hb_glyph_info_t) == sizeof (hb_internal_glyph_info_t));
|
|
ASSERT_STATIC (sizeof (hb_glyph_position_t) == sizeof (hb_internal_glyph_position_t));
|
|
ASSERT_STATIC (sizeof (hb_glyph_info_t) == sizeof (hb_glyph_position_t));
|
|
|
|
|
|
HB_INTERNAL void
|
|
_hb_buffer_swap (hb_buffer_t *buffer);
|
|
|
|
HB_INTERNAL void
|
|
_hb_buffer_clear_output (hb_buffer_t *buffer);
|
|
|
|
HB_INTERNAL void
|
|
_hb_buffer_add_output_glyphs (hb_buffer_t *buffer,
|
|
unsigned int num_in,
|
|
unsigned int num_out,
|
|
const hb_codepoint_t *glyph_data,
|
|
unsigned short component,
|
|
unsigned short ligID);
|
|
|
|
HB_INTERNAL void
|
|
_hb_buffer_add_output_glyphs_be16 (hb_buffer_t *buffer,
|
|
unsigned int num_in,
|
|
unsigned int num_out,
|
|
const uint16_t *glyph_data_be,
|
|
unsigned short component,
|
|
unsigned short ligID);
|
|
|
|
HB_INTERNAL void
|
|
_hb_buffer_add_output_glyph (hb_buffer_t *buffer,
|
|
hb_codepoint_t glyph_index,
|
|
unsigned short component,
|
|
unsigned short ligID);
|
|
|
|
HB_INTERNAL void
|
|
_hb_buffer_next_glyph (hb_buffer_t *buffer);
|
|
|
|
|
|
HB_INTERNAL void
|
|
_hb_buffer_clear_masks (hb_buffer_t *buffer);
|
|
|
|
HB_INTERNAL void
|
|
_hb_buffer_set_masks (hb_buffer_t *buffer,
|
|
hb_mask_t value,
|
|
hb_mask_t mask,
|
|
unsigned int cluster_start,
|
|
unsigned int cluster_end);
|
|
|
|
|
|
struct _hb_buffer_t {
|
|
hb_reference_count_t ref_count;
|
|
|
|
/* Information about how the text in the buffer should be treated */
|
|
hb_unicode_funcs_t *unicode;
|
|
|
|
struct properties_t {
|
|
hb_direction_t direction;
|
|
hb_script_t script;
|
|
hb_language_t language;
|
|
} props;
|
|
|
|
/* Buffer contents */
|
|
|
|
unsigned int allocated; /* Length of allocated arrays */
|
|
|
|
hb_bool_t have_output; /* Whether we have an output buffer going on */
|
|
hb_bool_t have_positions; /* Whether we have positions */
|
|
hb_bool_t in_error; /* Allocation failed */
|
|
|
|
unsigned int i; /* Cursor into ->info and ->pos arrays */
|
|
unsigned int len; /* Length of ->info and ->pos arrays */
|
|
unsigned int out_len; /* Length of ->out array */
|
|
|
|
hb_internal_glyph_info_t *info;
|
|
hb_internal_glyph_info_t *out_info;
|
|
hb_internal_glyph_position_t *pos;
|
|
|
|
/* Other stuff */
|
|
|
|
unsigned int max_lig_id;
|
|
|
|
|
|
/* Methods */
|
|
inline unsigned int allocate_lig_id (void) { return max_lig_id++; }
|
|
inline void swap (void) { _hb_buffer_swap (this); }
|
|
inline void clear_output (void) { _hb_buffer_clear_output (this); }
|
|
inline void next_glyph (void) { _hb_buffer_next_glyph (this); }
|
|
inline void add_output_glyphs (unsigned int num_in,
|
|
unsigned int num_out,
|
|
const hb_codepoint_t *glyph_data,
|
|
unsigned short component,
|
|
unsigned short ligID)
|
|
{ _hb_buffer_add_output_glyphs (this, num_in, num_out, glyph_data, component, ligID); }
|
|
inline void add_output_glyphs_be16 (unsigned int num_in,
|
|
unsigned int num_out,
|
|
const uint16_t *glyph_data_be,
|
|
unsigned short component,
|
|
unsigned short ligID)
|
|
{ _hb_buffer_add_output_glyphs_be16 (this, num_in, num_out, glyph_data_be, component, ligID); }
|
|
inline void add_output_glyph (hb_codepoint_t glyph_index,
|
|
unsigned short component = 0xFFFF,
|
|
unsigned short ligID = 0xFFFF)
|
|
{ _hb_buffer_add_output_glyph (this, glyph_index, component, ligID); }
|
|
inline void replace_glyph (hb_codepoint_t glyph_index) { add_output_glyph (glyph_index); }
|
|
|
|
inline void clear_masks (void) { _hb_buffer_clear_masks (this); }
|
|
inline void set_masks (hb_mask_t value,
|
|
hb_mask_t mask,
|
|
unsigned int cluster_start,
|
|
unsigned int cluster_end)
|
|
{ _hb_buffer_set_masks (this, value, mask, cluster_start, cluster_end); }
|
|
|
|
};
|
|
|
|
|
|
HB_END_DECLS
|
|
|
|
#endif /* HB_BUFFER_PRIVATE_HH */
|