ref: eb81e37825b8a5a62709f9505d1419e759123b1b
dir: /src/truetype/ttgload.h/
/***************************************************************************/
/* */
/* ttgload.h */
/* */
/* TrueType Glyph Loader (specification). */
/* */
/* Copyright 1996-1999 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 TTGLOAD_H
#define TTGLOAD_H
#include <ttobjs.h>
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
#include <ttinterp.h>
#endif
#ifdef __cplusplus
extern "C" {
#endif
typedef struct TT_Loader_
{
TT_Face face;
TT_Size size;
TT_GlyphSlot glyph;
TT_ULong load_flags;
TT_UInt glyph_index;
FT_Stream stream;
TT_Int byte_len;
TT_Int left_points;
TT_Int left_contours;
TT_BBox bbox;
TT_Int left_bearing;
TT_Int advance;
TT_Bool preserve_pps;
TT_Vector pp1;
TT_Vector pp2;
TT_ULong glyf_offset;
/* the zone where we load our glyphs */
FT_GlyphZone base;
FT_GlyphZone zone;
#ifdef TT_CONFIG_OPTION_BYTECODE_INTERPRETER
TT_ExecContext exec;
TT_Byte* instructions;
#endif
} TT_Loader;
/*************************************************************************/
/* */
/* <Function> */
/* TT_Get_Metrics */
/* */
/* <Description> */
/* Returns the horizontal or vertical metrics in font units for a */
/* given glyph. The metrics are the left side bearing (resp. top */
/* side bearing) and advance width (resp. advance height). */
/* */
/* <Input> */
/* header :: A pointer to either the horizontal or vertical metrics */
/* structure. */
/* */
/* index :: The glyph index. */
/* */
/* <Output> */
/* bearing :: The bearing, either left side or top side. */
/* */
/* advance :: The advance width resp. advance height. */
/* */
/* <Note> */
/* This function will much probably move to another component in the */
/* near future, but I haven't decided which yet. */
/* */
LOCAL_DEF
void TT_Get_Metrics( TT_HoriHeader* header,
TT_UInt index,
TT_Short* bearing,
TT_UShort* advance );
/*************************************************************************/
/* */
/* <Function> */
/* TT_Load_Glyph */
/* */
/* <Description> */
/* A function used to load a single glyph within a given glyph slot, */
/* for a given size. */
/* */
/* <Input> */
/* glyph :: A handle to a target slot object where the glyph */
/* will be loaded. */
/* */
/* size :: A handle to the source face size at which the glyph */
/* must be scaled/loaded. */
/* */
/* glyph_index :: The index of the glyph in the font file. */
/* */
/* load_flags :: A flag indicating what to load for this glyph. The */
/* FT_LOAD_XXX constants can be used to control the */
/* glyph loading process (e.g., whether the outline */
/* should be scaled, whether to load bitmaps or not, */
/* whether to hint the outline, etc). */
/* <Output> */
/* result :: A set of bit flags indicating the type of data that */
/* was loaded in the glyph slot (outline or bitmap, */
/* etc). */
/* */
/* You can set this field to 0 if you don't want this */
/* information. */
/* */
/* <Return> */
/* FreeType error code. 0 means success. */
/* */
LOCAL_DEF
TT_Error TT_Load_Glyph( TT_Size size,
TT_GlyphSlot glyph,
TT_UShort glyph_index,
TT_UInt load_flags );
#ifdef __cplusplus
}
#endif
#endif /* TTGLOAD_H */
/* END */