v1.4.4
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170
lib/linux/include/internal/ftgloadr.h
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170
lib/linux/include/internal/ftgloadr.h
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/***************************************************************************/
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/* */
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/* ftgloadr.h */
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/* */
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/* The FreeType glyph loader (specification). */
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/* */
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/* Copyright 2002, 2003, 2005, 2006 by */
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/* David Turner, Robert Wilhelm, and Werner Lemberg */
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/* */
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/* This file is part of the FreeType project, and may only be used, */
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/* modified, and distributed under the terms of the FreeType project */
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/* license, LICENSE.TXT. By continuing to use, modify, or distribute */
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/* this file you indicate that you have read the license and */
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/* understand and accept it fully. */
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/* */
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/***************************************************************************/
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#ifndef __FTGLOADR_H__
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#define __FTGLOADR_H__
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#include <ft2build.h>
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#include FT_FREETYPE_H
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FT_BEGIN_HEADER
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/*************************************************************************/
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/* */
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/* <Struct> */
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/* FT_GlyphLoader */
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/* */
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/* <Description> */
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/* The glyph loader is an internal object used to load several glyphs */
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/* together (for example, in the case of composites). */
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/* */
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/* <Note> */
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/* The glyph loader implementation is not part of the high-level API, */
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/* hence the forward structure declaration. */
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/* */
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typedef struct FT_GlyphLoaderRec_* FT_GlyphLoader ;
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#if 0 /* moved to freetype.h in version 2.2 */
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#define FT_SUBGLYPH_FLAG_ARGS_ARE_WORDS 1
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#define FT_SUBGLYPH_FLAG_ARGS_ARE_XY_VALUES 2
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#define FT_SUBGLYPH_FLAG_ROUND_XY_TO_GRID 4
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#define FT_SUBGLYPH_FLAG_SCALE 8
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#define FT_SUBGLYPH_FLAG_XY_SCALE 0x40
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#define FT_SUBGLYPH_FLAG_2X2 0x80
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#define FT_SUBGLYPH_FLAG_USE_MY_METRICS 0x200
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#endif
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typedef struct FT_SubGlyphRec_
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{
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FT_Int index;
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FT_UShort flags;
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FT_Int arg1;
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FT_Int arg2;
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FT_Matrix transform;
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} FT_SubGlyphRec;
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typedef struct FT_GlyphLoadRec_
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{
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FT_Outline outline; /* outline */
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FT_Vector* extra_points; /* extra points table */
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FT_Vector* extra_points2; /* second extra points table */
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FT_UInt num_subglyphs; /* number of subglyphs */
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FT_SubGlyph subglyphs; /* subglyphs */
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} FT_GlyphLoadRec, *FT_GlyphLoad;
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typedef struct FT_GlyphLoaderRec_
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{
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FT_Memory memory;
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FT_UInt max_points;
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FT_UInt max_contours;
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FT_UInt max_subglyphs;
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FT_Bool use_extra;
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FT_GlyphLoadRec base;
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FT_GlyphLoadRec current;
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void* other; /* for possible future extension? */
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} FT_GlyphLoaderRec;
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/* create new empty glyph loader */
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FT_BASE( FT_Error )
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FT_GlyphLoader_New( FT_Memory memory,
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FT_GlyphLoader *aloader );
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/* add an extra points table to a glyph loader */
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FT_BASE( FT_Error )
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FT_GlyphLoader_CreateExtra( FT_GlyphLoader loader );
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/* destroy a glyph loader */
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FT_BASE( void )
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FT_GlyphLoader_Done( FT_GlyphLoader loader );
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/* reset a glyph loader (frees everything int it) */
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FT_BASE( void )
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FT_GlyphLoader_Reset( FT_GlyphLoader loader );
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/* rewind a glyph loader */
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FT_BASE( void )
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FT_GlyphLoader_Rewind( FT_GlyphLoader loader );
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/* check that there is enough space to add `n_points' and `n_contours' */
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/* to the glyph loader */
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FT_BASE( FT_Error )
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FT_GlyphLoader_CheckPoints( FT_GlyphLoader loader,
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FT_UInt n_points,
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FT_UInt n_contours );
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#define FT_GLYPHLOADER_CHECK_P( _loader, _count ) \
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( (_count) == 0 || \
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( (_loader)->base.outline.n_points + \
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(_loader)->current.outline.n_points + \
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(unsigned long)(_count) ) <= (_loader)->max_points )
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#define FT_GLYPHLOADER_CHECK_C( _loader, _count ) \
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( (_count) == 0 || \
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( (_loader)->base.outline.n_contours + \
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(_loader)->current.outline.n_contours + \
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(unsigned long)(_count)) <= (_loader)->max_contours )
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#define FT_GLYPHLOADER_CHECK_POINTS( _loader, _points, _contours ) \
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( ( FT_GLYPHLOADER_CHECK_P( _loader, _points ) && \
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FT_GLYPHLOADER_CHECK_C( _loader, _contours ) ) \
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? 0 \
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: FT_GlyphLoader_CheckPoints( (_loader), (_points), (_contours) ) )
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/* check that there is enough space to add `n_subs' sub-glyphs to */
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/* a glyph loader */
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FT_BASE( FT_Error )
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FT_GlyphLoader_CheckSubGlyphs( FT_GlyphLoader loader,
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FT_UInt n_subs );
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/* prepare a glyph loader, i.e. empty the current glyph */
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FT_BASE( void )
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FT_GlyphLoader_Prepare( FT_GlyphLoader loader );
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/* add the current glyph to the base glyph */
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FT_BASE( void )
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FT_GlyphLoader_Add( FT_GlyphLoader loader );
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/* copy points from one glyph loader to another */
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FT_BASE( FT_Error )
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FT_GlyphLoader_CopyPoints( FT_GlyphLoader target,
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FT_GlyphLoader source );
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/* */
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FT_END_HEADER
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#endif /* __FTGLOADR_H__ */
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/* END */
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