--- /dev/null
+/***************************************************************************/
+/* */
+/* t1gload.h */
+/* */
+/* Type 1 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 T1GLOAD_H
+#define T1GLOAD_H
+
+
+#ifdef FT_FLAT_COMPILE
+
+#include "t1objs.h"
+
+#else
+
+#include <type1/t1objs.h>
+
+#endif
+
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+
+ typedef struct T1_Builder_ T1_Builder;
+
+ typedef FT_Error (*T1_Builder_EndChar)( T1_Builder* loader );
+
+ typedef FT_Error (*T1_Builder_Sbw)( T1_Builder* loader,
+ FT_Pos sbx,
+ FT_Pos sby,
+ FT_Pos wx,
+ FT_Pos wy );
+
+ typedef FT_Error (*T1_Builder_ClosePath)( T1_Builder* loader );
+
+ typedef FT_Error (*T1_Builder_RLineTo)( T1_Builder* loader,
+ FT_Pos dx,
+ FT_Pos dy );
+
+ typedef FT_Error (*T1_Builder_RMoveTo)( T1_Builder* loader,
+ FT_Pos dx,
+ FT_Pos dy );
+
+ typedef FT_Error (*T1_Builder_RCurveTo)( T1_Builder* loader,
+ FT_Pos dx1,
+ FT_Pos dy1,
+ FT_Pos dx2,
+ FT_Pos dy2,
+ FT_Pos dx3,
+ FT_Pos dy3 );
+
+
+ /*************************************************************************/
+ /* */
+ /* <Structure> */
+ /* T1_Builder_Funcs */
+ /* */
+ /* <Description> */
+ /* A structure to store the address of various functions used by a */
+ /* glyph builder to implement the outline's `path construction'. */
+ /* */
+ typedef struct T1_Builder_Funcs_
+ {
+ T1_Builder_EndChar end_char;
+ T1_Builder_Sbw set_bearing_point;
+ T1_Builder_ClosePath close_path;
+ T1_Builder_RLineTo rline_to;
+ T1_Builder_RMoveTo rmove_to;
+ T1_Builder_RCurveTo rcurve_to;
+
+ } T1_Builder_Funcs;
+
+
+ /*************************************************************************/
+ /* */
+ /* <Structure> */
+ /* T1_Builder */
+ /* */
+ /* <Description> */
+ /* A structure used during glyph loading to store its outline. */
+ /* */
+ /* <Fields> */
+ /* memory :: The current memory object. */
+ /* */
+ /* face :: The current face object. */
+ /* */
+ /* size :: The current size object. */
+ /* */
+ /* glyph :: The current glyph slot. */
+ /* */
+ /* loader :: The current glyph loader. */
+ /* */
+ /* current :: The current glyph outline. */
+ /* */
+ /* base :: The base glyph 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 (for composite glyphs). */
+ /* */
+ /* pos_y :: The vertical translation (for composite glyphs). */
+ /* */
+ /* left_bearing :: The left side bearing point. */
+ /* */
+ /* advance :: The horizontal advance vector. */
+ /* */
+ /* no_recurse :: */
+ /* */
+ /* bbox :: The glyph's bounding box. */
+ /* */
+ /* path_begun :: A flag which indicates that a new path has begun. */
+ /* */
+ /* load_points :: A flag which indicates, if not set, that no points */
+ /* are loaded. */
+ /* */
+ /* pass :: The pass number for multi-pass hinters. */
+ /* */
+ /* hint_point :: The index of the next point to hint. */
+ /* */
+ /* funcs :: A table of builder functions used to perform the */
+ /* outline's path construction. */
+ /* */
+ struct T1_Builder_
+ {
+ FT_Memory memory;
+ T1_Face face;
+ T1_Size size;
+ T1_GlyphSlot glyph;
+ FT_GlyphLoader* loader;
+
+ FT_Outline* current; /* the current glyph outline */
+ FT_Outline* base; /* the composite glyph outline */
+
+ 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_Bool no_recurse;
+
+ FT_BBox bbox; /* bounding box */
+ FT_Bool path_begun;
+ FT_Bool load_points;
+
+ FT_Int pass;
+ FT_Int hint_point;
+
+ /* path construction function interface */
+ T1_Builder_Funcs funcs;
+ };
+
+
+ typedef FT_Error (*T1_Hinter_ChangeHints)( T1_Builder* builder );
+
+ typedef FT_Error (*T1_Hinter_DotSection)( T1_Builder* builder );
+
+ typedef FT_Error (*T1_Hinter_Stem)( T1_Builder* builder,
+ FT_Pos pos,
+ FT_Pos width,
+ FT_Bool vertical );
+
+ typedef FT_Error (*T1_Hinter_Stem3)( T1_Builder* builder,
+ FT_Pos pos0,
+ FT_Pos width0,
+ FT_Pos pos1,
+ FT_Pos width1,
+ FT_Pos pos2,
+ FT_Pos width2,
+ FT_Bool vertical );
+
+
+ /*************************************************************************/
+ /* */
+ /* <Structure> */
+ /* T1_Hinter_Funcs */
+ /* */
+ /* <Description> */
+ /* A structure to store the address of various functions used by a */
+ /* Type 1 hinter to perform outline hinting. */
+ /* */
+ typedef struct T1_Hinter_Func_
+ {
+ T1_Hinter_ChangeHints change_hints;
+ T1_Hinter_DotSection dot_section;
+ T1_Hinter_Stem stem;
+ T1_Hinter_Stem3 stem3;
+
+ } T1_Hinter_Funcs;
+
+
+ typedef enum T1_Operator_
+ {
+ op_none = 0,
+ op_endchar,
+ op_hsbw,
+ op_seac,
+ op_sbw,
+ op_closepath,
+ op_hlineto,
+ op_hmoveto,
+ op_hvcurveto,
+ op_rlineto,
+ op_rmoveto,
+ op_rrcurveto,
+ op_vhcurveto,
+ op_vlineto,
+ op_vmoveto,
+ op_dotsection,
+ op_hstem,
+ op_hstem3,
+ op_vstem,
+ op_vstem3,
+ op_div,
+ op_callothersubr,
+ op_callsubr,
+ op_pop,
+ op_return,
+ op_setcurrentpoint,
+
+ op_max /* never remove this one */
+
+ } T1_Operator;
+
+
+ /* execution context charstring zone */
+ typedef struct T1_Decoder_Zone_
+ {
+ FT_Byte* base;
+ FT_Byte* limit;
+ FT_Byte* cursor;
+
+ } T1_Decoder_Zone;
+
+
+ typedef struct T1_Decoder_
+ {
+ T1_Builder builder;
+ T1_Hinter_Funcs hinter;
+
+ FT_Int stack[T1_MAX_CHARSTRINGS_OPERANDS];
+ FT_Int* top;
+
+ T1_Decoder_Zone zones[T1_MAX_SUBRS_CALLS + 1];
+ T1_Decoder_Zone* zone;
+
+ FT_Int flex_state;
+ FT_Int num_flex_vectors;
+ FT_Vector flex_vectors[7];
+
+ } T1_Decoder;
+
+
+ LOCAL_DEF
+ void T1_Init_Builder( T1_Builder* builder,
+ T1_Face face,
+ T1_Size size,
+ T1_GlyphSlot glyph,
+ const T1_Builder_Funcs* funcs );
+
+ LOCAL_DEF
+ void T1_Done_Builder( T1_Builder* builder );
+
+ LOCAL_DEF
+ void T1_Init_Decoder( T1_Decoder* decoder,
+ const T1_Hinter_Funcs* funcs );
+
+ LOCAL_DEF
+ FT_Error T1_Compute_Max_Advance( T1_Face face,
+ FT_Int* max_advance );
+
+ LOCAL_DEF
+ FT_Error T1_Parse_CharStrings( T1_Decoder* decoder,
+ FT_Byte* charstring_base,
+ FT_Int charstring_len,
+ FT_Int num_subrs,
+ FT_Byte** subrs_base,
+ FT_Int* subrs_len );
+
+ LOCAL_DEF
+ FT_Error T1_Add_Points( T1_Builder* builder,
+ FT_Int num_points );
+
+ LOCAL_DEF
+ FT_Error T1_Add_Contours( T1_Builder* builder,
+ FT_Int num_contours );
+
+ LOCAL_DEF
+ FT_Error T1_Load_Glyph( T1_GlyphSlot glyph,
+ T1_Size size,
+ FT_Int glyph_index,
+ FT_Int load_flags );
+
+
+#ifdef __cplusplus
+ }
+#endif
+
+
+#endif /* T1GLOAD_H */
+
+
+/* END */
projects / wxWidgets.git / blobdiff