mirror of
git://git.savannah.gnu.org/freetype/freetype2.git
synced 2025-04-11 22:56:50 +02:00
cb36b4a37d
updated public header files, as well as "ftchapters.h" which only contains comment that hold the list of section chapters..
472 lines
26 KiB
C
472 lines
26 KiB
C
/***************************************************************************/
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/* */
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/* fttypes.h */
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/* */
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/* FreeType simple types definitions (specification only). */
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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 __FTTYPES_H__
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#define __FTTYPES_H__
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#include <ft2build.h>
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#include FT_SYSTEM_H
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#include FT_IMAGE_H
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#include <stddef.h>
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FT_BEGIN_HEADER
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/*************************************************************************
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*
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* <Section>
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* basic_types
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*
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* <Title>
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* Basic Types
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*
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* <Abstract>
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* The basic data types defined by the library.
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*
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* <Description>
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* This section contains the basic data types defined by FreeType 2,
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* ranging from simple scalar types to font specific ones
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*
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* <Order>
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* FT_Byte FT_Char FT_Int FT_UInt FT_Short FT_UShort FT_Long FT_ULong
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* FT_Bool FT_Error FT_Fixed FT_Pointer FT_Pos FT_Vector FT_BBox
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* FT_Matrix
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*
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* FT_Generic FT_Generic_Finalizer
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*
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* FT_Bitmap FT_Pixel_Mode FT_Palette_Mode FT_Glyph_Format FT_IMAGE_TAG
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* FT_Glyph_Format
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*
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*/
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/*************************************************************************/
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/* */
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/* <Type> */
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/* FT_Bool */
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/* */
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/* <Description> */
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/* A typedef of unsigned char, used for simple booleans. */
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/* */
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typedef unsigned char FT_Bool;
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/*************************************************************************/
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/* */
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/* <Type> */
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/* FT_FWord */
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/* */
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/* <Description> */
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/* A signed 16-bit integer used to store a distance in original font */
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/* units. */
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/* */
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typedef signed short FT_FWord; /* distance in FUnits */
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/*************************************************************************/
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/* */
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/* <Type> */
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/* FT_UFWord */
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/* */
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/* <Description> */
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/* An unsigned 16-bit integer used to store a distance in original */
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/* font units. */
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/* */
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typedef unsigned short FT_UFWord; /* unsigned distance */
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/*************************************************************************/
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/* */
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/* <Type> */
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/* FT_Char */
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/* */
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/* <Description> */
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/* A simple typedef for the _signed_ char type. */
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/* */
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typedef signed char FT_Char;
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/*************************************************************************/
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/* */
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/* <Type> */
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/* FT_Byte */
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/* */
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/* <Description> */
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/* A simple typedef for the _unsigned_ char type. */
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/* */
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typedef unsigned char FT_Byte;
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/*************************************************************************/
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/* */
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/* <Type> */
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/* FT_String */
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/* */
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/* <Description> */
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/* A simple typedef for the char type, usually used for strings. */
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/* */
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typedef char FT_String;
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/*************************************************************************/
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/* */
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/* <Type> */
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/* FT_Short */
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/* */
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/* <Description> */
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/* A typedef for signed short. */
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/* */
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typedef signed short FT_Short;
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/*************************************************************************/
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/* */
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/* <Type> */
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/* FT_UShort */
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/* */
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/* <Description> */
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/* A typedef for unsigned short. */
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/* */
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typedef unsigned short FT_UShort;
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/*************************************************************************/
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/* */
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/* <Type> */
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/* FT_Int */
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/* */
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/* <Description> */
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/* A typedef for the int type. */
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/* */
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typedef int FT_Int;
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/*************************************************************************/
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/* */
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/* <Type> */
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/* FT_UInt */
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/* */
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/* <Description> */
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/* A typedef for the unsigned int type. */
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/* */
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typedef unsigned int FT_UInt;
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/*************************************************************************/
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/* */
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/* <Type> */
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/* FT_Long */
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/* */
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/* <Description> */
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/* A typedef for signed long. */
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/* */
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typedef signed long FT_Long;
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/*************************************************************************/
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/* */
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/* <Type> */
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/* FT_ULong */
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/* */
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/* <Description> */
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/* A typedef for unsigned long. */
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/* */
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typedef unsigned long FT_ULong;
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/*************************************************************************/
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/* */
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/* <Type> */
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/* FT_F2Dot14 */
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/* */
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/* <Description> */
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/* A signed 2.14 fixed float type used for unit vectors. */
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/* */
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typedef signed short FT_F2Dot14;
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/*************************************************************************/
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/* */
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/* <Type> */
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/* FT_F26Dot6 */
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/* */
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/* <Description> */
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/* A signed 26.6 fixed float type used for vectorial pixel */
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/* coordinates. */
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/* */
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typedef signed long FT_F26Dot6;
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/*************************************************************************/
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/* */
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/* <Type> */
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/* FT_Fixed */
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/* */
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/* <Description> */
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/* This type is used to store 16.16 fixed float values, like scales */
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/* or matrix coefficients. */
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/* */
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typedef signed long FT_Fixed;
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/*************************************************************************/
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/* */
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/* <Type> */
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/* FT_Error */
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/* */
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/* <Description> */
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/* The FreeType error code type. A value of 0 is always interpreted */
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/* as a successful operation. */
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/* */
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typedef int FT_Error;
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/*************************************************************************/
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/* */
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/* <Type> */
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/* FT_Pointer */
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/* */
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/* <Description> */
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/* A simple typedef for a typeless pointer. */
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/* */
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typedef void* FT_Pointer;
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/*************************************************************************/
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/* */
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/* <Struct> */
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/* FT_UnitVector */
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/* */
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/* <Description> */
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/* A simple structure used to store a 2D vector unit vector. Uses */
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/* FT_F2Dot14 types. */
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/* */
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/* <Fields> */
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/* x :: Horizontal coordinate. */
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/* */
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/* y :: Vertical coordinate. */
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/* */
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typedef struct FT_UnitVector_
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{
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FT_F2Dot14 x;
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FT_F2Dot14 y;
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} FT_UnitVector;
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/*************************************************************************/
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/* */
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/* <Struct> */
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/* FT_Matrix */
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/* */
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/* <Description> */
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/* A simple structure used to store a 2x2 matrix. Coefficients are */
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/* in 16.16 fixed float format. The computation performed is: */
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/* */
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/* { */
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/* x' = x*xx + y*xy */
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/* y' = x*yx + y*yy */
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/* } */
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/* */
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/* <Fields> */
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/* xx :: Matrix coefficient. */
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/* */
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/* xy :: Matrix coefficient. */
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/* */
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/* yx :: Matrix coefficient. */
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/* */
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/* yy :: Matrix coefficient. */
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/* */
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typedef struct FT_Matrix_
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{
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FT_Fixed xx, xy;
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FT_Fixed yx, yy;
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} FT_Matrix;
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/*************************************************************************/
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/* */
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/* <FuncType> */
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/* FT_Generic_Finalizer */
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/* */
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/* <Description> */
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/* Describes a function used to destroy the `client' data of any */
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/* FreeType object. See the description of the FT_Generic type for */
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/* details of usage. */
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/* */
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/* <Input> */
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/* The address of the FreeType object which is under finalization. */
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/* Its client data is accessed through its `generic' field. */
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/* */
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typedef void (*FT_Generic_Finalizer)(void* object);
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/*************************************************************************/
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/* */
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/* <Struct> */
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/* FT_Generic */
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/* */
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/* <Description> */
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/* Client applications often need to associate their own data to a */
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/* variety of FreeType core objects. For example, a text layout API */
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/* might want to associate a glyph cache to a given size object. */
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/* */
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/* Most FreeType object contains a `generic' field, of type */
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/* FT_Generic, which usage is left to client applications and font */
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/* servers. */
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/* */
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/* It can be used to store a pointer to client-specific data, as well */
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/* as the address of a `finalizer' function, which will be called by */
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/* FreeType when the object is destroyed (for example, the previous */
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/* client example would put the address of the glyph cache destructor */
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/* in the `finalizer' field). */
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/* */
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/* <Fields> */
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/* data :: A typeless pointer to any client-specified data. This */
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/* field is completely ignored by the FreeType library. */
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/* */
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/* finalizer :: A pointer to a `generic finalizer' function, which */
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/* will be called when the object is destroyed. If this */
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/* field is set to NULL, no code will be called. */
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/* */
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typedef struct FT_Generic_
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{
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void* data;
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FT_Generic_Finalizer finalizer;
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} FT_Generic;
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/*************************************************************************/
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/* */
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/* <Macro> */
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/* FT_MAKE_TAG */
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/* */
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/* <Description> */
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/* This macro converts four letter tags which are used to label */
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/* TrueType tables into an unsigned long to be used within FreeType. */
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/* */
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#define FT_MAKE_TAG( _x1, _x2, _x3, _x4 ) \
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( ( (FT_ULong)_x1 << 24 ) | \
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( (FT_ULong)_x2 << 16 ) | \
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( (FT_ULong)_x3 << 8 ) | \
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(FT_ULong)_x4 )
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/*************************************************************************/
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/*************************************************************************/
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/* */
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/* L I S T M A N A G E M E N T */
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/* */
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/*************************************************************************/
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/*************************************************************************/
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/*************************************************************************/
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/* */
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/* <Section> */
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/* list_processing */
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/* */
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/*************************************************************************/
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/*************************************************************************/
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/* */
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/* <Type> */
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/* FT_ListNode */
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/* */
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/* <Description> */
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/* Many elements and objects in FreeType are listed through a */
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/* FT_List record (see FT_ListRec). As its name suggests, a */
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/* FT_ListNode is a handle to a single list element. */
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/* */
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typedef struct FT_ListNodeRec_* FT_ListNode;
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/*************************************************************************/
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/* */
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/* <Type> */
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/* FT_List */
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/* */
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/* <Description> */
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/* A handle to a list record (see FT_ListRec). */
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/* */
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typedef struct FT_ListRec_* FT_List;
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/*************************************************************************/
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/* */
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/* <Struct> */
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/* FT_ListNodeRec */
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/* */
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/* <Description> */
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/* A structure used to hold a single list element. */
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/* */
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/* <Fields> */
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/* prev :: The previous element in the list. NULL if first. */
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/* */
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/* next :: The next element in the list. NULL if last. */
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/* */
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/* data :: A typeless pointer to the listed object. */
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/* */
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typedef struct FT_ListNodeRec_
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{
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FT_ListNode prev;
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FT_ListNode next;
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void* data;
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} FT_ListNodeRec;
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/*************************************************************************/
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/* */
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/* <Struct> */
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/* FT_ListRec */
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/* */
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/* <Description> */
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/* A structure used to hold a simple doubly-linked list. These are */
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/* used in many parts of FreeType. */
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/* */
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/* <Fields> */
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/* head :: The head (first element) of doubly-linked list. */
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/* */
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/* tail :: The tail (last element) of doubly-linked list. */
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/* */
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typedef struct FT_ListRec_
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{
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FT_ListNode head;
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FT_ListNode tail;
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} FT_ListRec;
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/* */
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#define FT_IS_EMPTY( list ) ( (list).head == 0 )
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FT_END_HEADER
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#endif /* __FTTYPES_H__ */
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/* END */
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