192 lines
7.8 KiB
C
192 lines
7.8 KiB
C
/***************************************************************************/
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/* */
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/* cidgload.h */
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/* */
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/* OpenType Glyph Loader (specification). */
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/* */
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/* Copyright 1996-2000 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 CIDGLOAD_H
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#define CIDGLOAD_H
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#include <cidobjs.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*************************************************************************/
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/* */
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/* <Structure> */
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/* CID_Builder */
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/* */
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/* <Description> */
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/* A structure used during glyph loading to store its outline. */
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/* */
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/* <Fields> */
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/* memory :: The current memory object. */
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/* */
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/* face :: The current face object. */
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/* */
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/* glyph :: The current glyph slot. */
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/* */
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/* current :: The current glyph outline. */
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/* */
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/* base :: The base glyph outline. */
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/* */
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/* max_points :: maximum points in builder outline */
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/* */
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/* max_contours :: Maximal number of contours in builder outline. */
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/* */
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/* last :: The last point position. */
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/* */
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/* scale_x :: The horizontal scale (FUnits to sub-pixels). */
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/* */
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/* scale_y :: The vertical scale (FUnits to sub-pixels). */
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/* */
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/* pos_x :: The horizontal translation (if composite glyph). */
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/* */
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/* pos_y :: The vertical translation (if composite glyph). */
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/* */
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/* left_bearing :: The left side bearing point. */
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/* */
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/* advance :: The horizontal advance vector. */
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/* */
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/* bbox :: Unused. */
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/* */
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/* path_begun :: A flag which indicates that a new path has begun. */
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/* */
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/* load_points :: If this flag is not set, no points are loaded. */
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/* */
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/* no_recurse :: Set but not used. */
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/* */
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/* error :: An error code that is only used to report memory */
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/* allocation problems. */
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/* */
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/* metrics_only :: A boolean indicating that we only want to compute */
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/* the metrics of a given glyph, not load all of its */
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/* points. */
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/* */
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typedef struct CID_Builder_
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{
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FT_Memory memory;
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CID_Face face;
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T1_GlyphSlot glyph;
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FT_Outline current; /* the current glyph outline */
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FT_Outline base; /* the composite glyph outline */
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FT_Int max_points; /* capacity of base outline in points */
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FT_Int max_contours; /* capacity of base outline in contours */
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FT_Vector last;
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FT_Fixed scale_x;
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FT_Fixed scale_y;
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FT_Pos pos_x;
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FT_Pos pos_y;
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FT_Vector left_bearing;
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FT_Vector advance;
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FT_BBox bbox; /* bounding box */
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FT_Bool path_begun;
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FT_Bool load_points;
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FT_Bool no_recurse;
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FT_Error error; /* only used for memory errors */
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FT_Bool metrics_only;
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} CID_Builder;
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/* execution context charstring zone */
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typedef struct CID_Decoder_Zone_
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{
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FT_Byte* base;
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FT_Byte* limit;
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FT_Byte* cursor;
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} CID_Decoder_Zone;
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typedef struct CID_Decoder_
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{
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CID_Builder builder;
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FT_Int stack[T1_MAX_CHARSTRINGS_OPERANDS];
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FT_Int* top;
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CID_Decoder_Zone zones[T1_MAX_SUBRS_CALLS + 1];
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CID_Decoder_Zone* zone;
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FT_Matrix font_matrix;
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CID_Subrs* subrs;
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FT_UInt lenIV;
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FT_Int flex_state;
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FT_Int num_flex_vectors;
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FT_Vector flex_vectors[7];
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} CID_Decoder;
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LOCAL_DEF
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void CID_Init_Builder( CID_Builder* builder,
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CID_Face face,
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T1_Size size,
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T1_GlyphSlot glyph );
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LOCAL_DEF
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void CID_Done_Builder( CID_Builder* builder );
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LOCAL_DEF
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void CID_Init_Decoder( CID_Decoder* decoder );
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#if 0
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/* Compute the maximum advance width of a font through quick parsing */
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LOCAL_DEF
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FT_Error CID_Compute_Max_Advance( CID_Face face,
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FT_Int* max_advance );
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#endif
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/* This function is exported, because it is used by the T1Dump utility */
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LOCAL_DEF
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FT_Error CID_Parse_CharStrings( CID_Decoder* decoder,
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FT_Byte* charstring_base,
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FT_Int charstring_len );
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LOCAL_DEF
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FT_Error CID_Load_Glyph( T1_GlyphSlot glyph,
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T1_Size size,
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FT_Int glyph_index,
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FT_Int load_flags );
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#ifdef __cplusplus
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}
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#endif
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#endif /* CIDGLOAD_H */
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/* END */
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