diff options
Diffstat (limited to 'trunk/pango/opentype/harfbuzz-buffer.h')
| -rw-r--r-- | trunk/pango/opentype/harfbuzz-buffer.h | 106 |
1 files changed, 106 insertions, 0 deletions
diff --git a/trunk/pango/opentype/harfbuzz-buffer.h b/trunk/pango/opentype/harfbuzz-buffer.h new file mode 100644 index 00000000..c7478e38 --- /dev/null +++ b/trunk/pango/opentype/harfbuzz-buffer.h @@ -0,0 +1,106 @@ +/* harfbuzz-buffer.h: Buffer of glyphs for substitution/positioning + * + * Copyrigh 2004 Red Hat Software + * + * Portions Copyright 1996-2000 by + * David Turner, Robert Wilhelm, and Werner Lemberg. + * + * This file is part of the FreeType project, and may only be used + * modified and distributed under the terms of the FreeType project + * license, LICENSE.TXT. By continuing to use, modify, or distribute + * this file you indicate that you have read the license and + * understand and accept it fully. + */ +#ifndef HARFBUZZ_BUFFER_H +#define HARFBUZZ_BUFFER_H + +#include <ft2build.h> +#include FT_FREETYPE_H + +FT_BEGIN_HEADER + +#define HB_GLYPH_PROPERTIES_UNKNOWN 0xFFFF + +typedef struct HB_GlyphItemRec_ { + FT_UInt gindex; + FT_UInt properties; + FT_UInt cluster; + FT_UShort component; + FT_UShort ligID; + FT_UShort gproperties; +} HB_GlyphItemRec, *HB_GlyphItem; + +typedef struct HB_PositionRec_ { + FT_Pos x_pos; + FT_Pos y_pos; + FT_Pos x_advance; + FT_Pos y_advance; + FT_UShort back; /* number of glyphs to go back + for drawing current glyph */ + FT_Bool new_advance; /* if set, the advance width values are + absolute, i.e., they won't be + added to the original glyph's value + but rather replace them. */ + FT_Short cursive_chain; /* character to which this connects, + may be positive or negative; used + only internally */ +} HB_PositionRec, *HB_Position; + + +typedef struct HB_BufferRec_{ + FT_Memory memory; + FT_ULong allocated; + + FT_ULong in_length; + FT_ULong out_length; + FT_ULong in_pos; + FT_ULong out_pos; + + HB_GlyphItem in_string; + HB_GlyphItem out_string; + HB_Position positions; + FT_UShort max_ligID; +} HB_BufferRec, *HB_Buffer; + +FT_Error +hb_buffer_new( FT_Memory memory, + HB_Buffer *buffer ); + +FT_Error +hb_buffer_swap( HB_Buffer buffer ); + +FT_Error +hb_buffer_free( HB_Buffer buffer ); + +FT_Error +hb_buffer_clear( HB_Buffer buffer ); + +FT_Error +hb_buffer_add_glyph( HB_Buffer buffer, + FT_UInt glyph_index, + FT_UInt properties, + FT_UInt cluster ); + +FT_Error +hb_buffer_add_output_glyphs( HB_Buffer buffer, + FT_UShort num_in, + FT_UShort num_out, + FT_UShort *glyph_data, + FT_UShort component, + FT_UShort ligID ); + +FT_Error +hb_buffer_add_output_glyph ( HB_Buffer buffer, + FT_UInt glyph_index, + FT_UShort component, + FT_UShort ligID ); + +FT_Error +hb_buffer_copy_output_glyph ( HB_Buffer buffer ); + +FT_UShort +hb_buffer_allocate_ligid( HB_Buffer buffer ); + +FT_END_HEADER + +#endif /* HARFBUZZ_BUFFER_H */ |