Edit
kc3-lang/harfbuzz/src/hb-buffer-private.hh
Behdad Esfahbod
- src/hb-buffer-private.hh
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/* * 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_H #define HB_BUFFER_PRIVATE_H #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); 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; hb_direction_t direction; hb_script_t script; hb_language_t language; /* Buffer contents */ unsigned int allocated; hb_bool_t have_output; /* whether we have an output buffer going on */ hb_bool_t have_positions; /* whether we have positions */ unsigned int in_length; unsigned int out_length; unsigned int in_pos; unsigned int out_pos; /* out_length and out_pos are actually always the same */ hb_internal_glyph_info_t *in_string; hb_internal_glyph_info_t *out_string; hb_internal_glyph_position_t *positions; /* 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); } }; #ifndef BUFFER #define BUFFER buffer #endif /* convenience macros */ #define IN_GLYPH(pos) (BUFFER->in_string[(pos)].codepoint) #define IN_INFO(pos) (&BUFFER->in_string[(pos)]) #define IN_CURGLYPH() (BUFFER->in_string[BUFFER->in_pos].codepoint) #define IN_NEXTGLYPH() (BUFFER->in_string[BUFFER->in_pos + 1].codepoint) #define IN_CURINFO() (&BUFFER->in_string[BUFFER->in_pos]) #define IN_MASK(pos) (BUFFER->in_string[(pos)].mask) #define IN_CLUSTER(pos) (BUFFER->in_string[(pos)].cluster) #define IN_LIGID(pos) (BUFFER->in_string[(pos)].lig_id) #define IN_COMPONENT(pos) (BUFFER->in_string[(pos)].component) #define POSITION(pos) (&BUFFER->positions[(pos)]) #define CURPOSITION() (&BUFFER->positions[BUFFER->in_pos]) #define OUT_GLYPH(pos) (BUFFER->out_string[(pos)].codepoint) #define OUT_INFO(pos) (&BUFFER->out_string[(pos)]) HB_END_DECLS #endif /* HB_BUFFER_PRIVATE_H */