385 lines
22 KiB
C
385 lines
22 KiB
C
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/***************************************************************************/
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/* */
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/* fttypes.h */
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/* */
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/* FreeType simple types definitions */
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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 <freetype/ftsystem.h>
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#include <freetype/ftimage.h>
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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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/* 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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/* xy :: Matrix coefficient. */
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/* yx :: Matrix coefficient. */
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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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/* <Struct> */
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/* FT_BBox */
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/* */
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/* <Description> */
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/* A structure used to hold an outline's bounding box, i.e., the */
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/* coordinates of its extrema in the horizontal and vertical */
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/* directions. */
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/* */
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/* <Fields> */
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/* xMin :: The horizontal minimum (left-most). */
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/* yMin :: The vertical minimum (bottom-most). */
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/* xMax :: The horizontal maximum (right-most). */
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/* yMax :: The vertical maximum (top-most). */
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/* */
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typedef struct FT_BBox_
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{
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FT_Pos xMin, yMin;
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FT_Pos xMax, yMax;
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} FT_BBox;
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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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/* <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 :: Previous element in the list. NULL if first. */
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/* next :: Next element in the list. NULL if last. */
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/* data :: 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 :: Head (first element) of doubly-linked list. */
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/* tail :: 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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#define FT_IS_EMPTY(list) ( (list).head == 0 )
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#endif /* FTTYPES_H */
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/* END */
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