ref: 8050a6b85d9c8ffa1efd716b16434f26efddc04e
parent: 167e2be4108ef62c9b3bccb97e53192bbd38410e
author: Tom Kacvinsky <[email protected]>
date: Tue Jan 2 19:17:58 EST 2001
This file was previously known as t2gload.h.
--- /dev/null
+++ b/src/cff/cffgload.h
@@ -1,0 +1,203 @@
+/***************************************************************************/
+/* */
+/* cffgload.h */
+/* */
+/* OpenType Glyph Loader (specification). */
+/* */
+/* 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 __CFFGLOAD_H__
+#define __CFFGLOAD_H__
+
+
+#include <ft2build.h>
+#include FT_FREETYPE_H
+#include FT_SOURCE_FILE(cff,cffobjs.h)
+
+
+FT_BEGIN_HEADER
+
+
+#define CFF_MAX_OPERANDS 48
+#define CFF_MAX_SUBRS_CALLS 32
+
+
+ /*************************************************************************/
+ /* */
+ /* <Structure> */
+ /* CFF_Builder */
+ /* */
+ /* <Description> */
+ /* A structure used during glyph loading to store its outline. */
+ /* */
+ /* <Fields> */
+ /* memory :: The current memory object. */
+ /* */
+ /* face :: The current face object. */
+ /* */
+ /* glyph :: The current glyph slot. */
+ /* */
+ /* current :: The current glyph outline. */
+ /* */
+ /* base :: The base glyph outline. */
+ /* */
+ /* max_points :: maximum points in builder outline */
+ /* */
+ /* max_contours :: Maximal number of contours in builder outline. */
+ /* */
+ /* last :: The last point position. */
+ /* */
+ /* scale_x :: The horizontal scale (FUnits to sub-pixels). */
+ /* */
+ /* scale_y :: The vertical scale (FUnits to sub-pixels). */
+ /* */
+ /* pos_x :: The horizontal translation (if composite glyph). */
+ /* */
+ /* pos_y :: The vertical translation (if composite glyph). */
+ /* */
+ /* left_bearing :: The left side bearing point. */
+ /* */
+ /* advance :: The horizontal advance vector. */
+ /* */
+ /* bbox :: Unused. */
+ /* */
+ /* path_begun :: A flag which indicates that a new path has begun. */
+ /* */
+ /* load_points :: If this flag is not set, no points are loaded. */
+ /* */
+ /* no_recurse :: Set but not used. */
+ /* */
+ /* error :: An error code that is only used to report memory */
+ /* allocation problems. */
+ /* */
+ /* metrics_only :: A boolean indicating that we only want to compute */
+ /* the metrics of a given glyph, not load all of its */
+ /* points. */
+ /* */
+ typedef struct CFF_Builder_
+ {+ FT_Memory memory;
+ TT_Face face;
+ CFF_GlyphSlot glyph;
+ FT_GlyphLoader* loader;
+ FT_Outline* base;
+ FT_Outline* current;
+
+ FT_Vector last;
+
+ FT_Fixed scale_x;
+ FT_Fixed scale_y;
+
+ FT_Pos pos_x;
+ FT_Pos pos_y;
+
+ FT_Vector left_bearing;
+ FT_Vector advance;
+
+ FT_BBox bbox; /* bounding box */
+ FT_Bool path_begun;
+ FT_Bool load_points;
+ FT_Bool no_recurse;
+
+ FT_Error error; /* only used for memory errors */
+ FT_Bool metrics_only;
+
+ } CFF_Builder;
+
+
+ /* execution context charstring zone */
+
+ typedef struct CFF_Decoder_Zone_
+ {+ FT_Byte* base;
+ FT_Byte* limit;
+ FT_Byte* cursor;
+
+ } CFF_Decoder_Zone;
+
+
+ typedef struct CFF_Decoder_
+ {+ CFF_Builder builder;
+ CFF_Font* cff;
+
+ FT_Fixed stack[CFF_MAX_OPERANDS + 1];
+ FT_Fixed* top;
+
+ CFF_Decoder_Zone zones[CFF_MAX_SUBRS_CALLS + 1];
+ CFF_Decoder_Zone* zone;
+
+ FT_Int flex_state;
+ FT_Int num_flex_vectors;
+ FT_Vector flex_vectors[7];
+
+ FT_Pos glyph_width;
+ FT_Pos nominal_width;
+
+ FT_Bool read_width;
+ FT_Int num_hints;
+ FT_Fixed* buildchar;
+ FT_Int len_buildchar;
+
+ FT_UInt num_locals;
+ FT_UInt num_globals;
+
+ FT_Int locals_bias;
+ FT_Int globals_bias;
+
+ FT_Byte** locals;
+ FT_Byte** globals;
+
+ FT_Byte** glyph_names; /* for pure CFF fonts only */
+ FT_UInt num_glyphs; /* number of glyphs in font */
+
+ } CFF_Decoder;
+
+
+ FT_LOCAL
+ void CFF_Init_Decoder( CFF_Decoder* decoder,
+ TT_Face face,
+ CFF_Size size,
+ CFF_GlyphSlot slot );
+
+ FT_LOCAL
+ void CFF_Prepare_Decoder( CFF_Decoder* decoder,
+ FT_UInt glyph_index );
+
+#if 0 /* unused until we support pure CFF fonts */
+
+ /* Compute the maximum advance width of a font through quick parsing */
+ FT_LOCAL
+ FT_Error CFF_Compute_Max_Advance( TT_Face face,
+ FT_Int* max_advance );
+
+#endif /* 0 */
+
+ FT_LOCAL
+ FT_Error CFF_Parse_CharStrings( CFF_Decoder* decoder,
+ FT_Byte* charstring_base,
+ FT_Int charstring_len );
+
+ FT_LOCAL
+ FT_Error CFF_Load_Glyph( CFF_GlyphSlot glyph,
+ CFF_Size size,
+ FT_Int glyph_index,
+ FT_Int load_flags );
+
+
+FT_END_HEADER
+
+#endif /* __CFFGLOAD_H__ */
+
+
+/* END */