diff options
Diffstat (limited to 'third_party/harfbuzz-ng/src/hb-buffer.h')
| -rw-r--r-- | third_party/harfbuzz-ng/src/hb-buffer.h | 83 |
1 files changed, 57 insertions, 26 deletions
diff --git a/third_party/harfbuzz-ng/src/hb-buffer.h b/third_party/harfbuzz-ng/src/hb-buffer.h index 0185415..9582ebe 100644 --- a/third_party/harfbuzz-ng/src/hb-buffer.h +++ b/third_party/harfbuzz-ng/src/hb-buffer.h @@ -1,8 +1,9 @@ /* - * Copyright (C) 1998-2004 David Turner and Werner Lemberg - * Copyright (C) 2004,2007,2009 Red Hat, Inc. + * Copyright © 1998-2004 David Turner and Werner Lemberg + * Copyright © 2004,2007,2009 Red Hat, Inc. + * Copyright © 2011 Google, Inc. * - * This is part of HarfBuzz, a text shaping library. + * 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 @@ -23,6 +24,7 @@ * PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. * * Red Hat Author(s): Owen Taylor, Behdad Esfahbod + * Google Author(s): Behdad Esfahbod */ #ifndef HB_BUFFER_H @@ -30,7 +32,6 @@ #include "hb-common.h" #include "hb-unicode.h" -#include "hb-language.h" HB_BEGIN_DECLS @@ -41,6 +42,8 @@ typedef struct _hb_glyph_info_t { hb_codepoint_t codepoint; hb_mask_t mask; uint32_t cluster; + + /*< private >*/ hb_var_int_t var1; hb_var_int_t var2; } hb_glyph_info_t; @@ -50,22 +53,35 @@ typedef struct _hb_glyph_position_t { hb_position_t y_advance; hb_position_t x_offset; hb_position_t y_offset; + + /*< private >*/ hb_var_int_t var; } hb_glyph_position_t; hb_buffer_t * -hb_buffer_create (unsigned int pre_alloc_size); +hb_buffer_create (void); hb_buffer_t * -hb_buffer_reference (hb_buffer_t *buffer); +hb_buffer_get_empty (void); -unsigned int -hb_buffer_get_reference_count (hb_buffer_t *buffer); +hb_buffer_t * +hb_buffer_reference (hb_buffer_t *buffer); void hb_buffer_destroy (hb_buffer_t *buffer); +hb_bool_t +hb_buffer_set_user_data (hb_buffer_t *buffer, + hb_user_data_key_t *key, + void * data, + hb_destroy_func_t destroy, + hb_bool_t replace); + +void * +hb_buffer_get_user_data (hb_buffer_t *buffer, + hb_user_data_key_t *key); + void hb_buffer_set_unicode_funcs (hb_buffer_t *buffer, @@ -96,15 +112,20 @@ hb_language_t hb_buffer_get_language (hb_buffer_t *buffer); +/* Resets the buffer. Afterwards it's as if it was just created, + * except that it has a larger buffer allocated perhaps... */ void -hb_buffer_clear (hb_buffer_t *buffer); +hb_buffer_reset (hb_buffer_t *buffer); + +/* Returns FALSE if allocation failed */ +hb_bool_t +hb_buffer_pre_allocate (hb_buffer_t *buffer, + unsigned int size); -void -hb_buffer_clear_positions (hb_buffer_t *buffer); +/* Returns FALSE if allocation has failed before */ hb_bool_t -hb_buffer_ensure (hb_buffer_t *buffer, - unsigned int size); +hb_buffer_allocation_successful (hb_buffer_t *buffer); void hb_buffer_reverse (hb_buffer_t *buffer); @@ -112,50 +133,60 @@ hb_buffer_reverse (hb_buffer_t *buffer); void hb_buffer_reverse_clusters (hb_buffer_t *buffer); +void +hb_buffer_guess_properties (hb_buffer_t *buffer); + /* Filling the buffer in */ void -hb_buffer_add_glyph (hb_buffer_t *buffer, - hb_codepoint_t codepoint, - hb_mask_t mask, - unsigned int cluster); +hb_buffer_add (hb_buffer_t *buffer, + hb_codepoint_t codepoint, + hb_mask_t mask, + unsigned int cluster); void hb_buffer_add_utf8 (hb_buffer_t *buffer, const char *text, - unsigned int text_length, + int text_length, unsigned int item_offset, - unsigned int item_length); + int item_length); void hb_buffer_add_utf16 (hb_buffer_t *buffer, const uint16_t *text, - unsigned int text_length, + int text_length, unsigned int item_offset, - unsigned int item_length); + int item_length); void hb_buffer_add_utf32 (hb_buffer_t *buffer, const uint32_t *text, - unsigned int text_length, + int text_length, unsigned int item_offset, - unsigned int item_length); + int item_length); -/* Getting glyphs out of the buffer */ +/* Clears any new items added at the end */ +hb_bool_t +hb_buffer_set_length (hb_buffer_t *buffer, + unsigned int length); /* Return value valid as long as buffer not modified */ unsigned int hb_buffer_get_length (hb_buffer_t *buffer); +/* Getting glyphs out of the buffer */ + /* Return value valid as long as buffer not modified */ hb_glyph_info_t * -hb_buffer_get_glyph_infos (hb_buffer_t *buffer); +hb_buffer_get_glyph_infos (hb_buffer_t *buffer, + unsigned int *length); /* Return value valid as long as buffer not modified */ hb_glyph_position_t * -hb_buffer_get_glyph_positions (hb_buffer_t *buffer); +hb_buffer_get_glyph_positions (hb_buffer_t *buffer, + unsigned int *length); HB_END_DECLS |