diff options
Diffstat (limited to 'src/3rdparty/freetype/include/ftttdrv.h')
| -rw-r--r-- | src/3rdparty/freetype/include/ftttdrv.h | 170 |
1 files changed, 0 insertions, 170 deletions
diff --git a/src/3rdparty/freetype/include/ftttdrv.h b/src/3rdparty/freetype/include/ftttdrv.h deleted file mode 100644 index 358841397c..0000000000 --- a/src/3rdparty/freetype/include/ftttdrv.h +++ /dev/null @@ -1,170 +0,0 @@ -/***************************************************************************/ -/* */ -/* ftttdrv.h */ -/* */ -/* FreeType API for controlling the TrueType driver */ -/* (specification only). */ -/* */ -/* Copyright 2013 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 __FTTTDRV_H__ -#define __FTTTDRV_H__ - -#include <ft2build.h> -#include FT_FREETYPE_H - -#ifdef FREETYPE_H -#error "freetype.h of FreeType 1 has been loaded!" -#error "Please fix the directory search order for header files" -#error "so that freetype.h of FreeType 2 is found first." -#endif - - -FT_BEGIN_HEADER - - - /************************************************************************** - * - * @section: - * tt_driver - * - * @title: - * The TrueType driver - * - * @abstract: - * Controlling the TrueType driver module. - * - * @description: - * While FreeType's TrueType driver doesn't expose API functions by - * itself, it is possible to control its behaviour with @FT_Property_Set - * and @FT_Property_Get. The following lists the available properties - * together with the necessary macros and structures. - * - * The TrueType driver's module name is `truetype'. - * - */ - - - /************************************************************************** - * - * @property: - * interpreter-version - * - * @description: - * Currently, two versions are available, representing the bytecode - * interpreter with and without subpixel hinting support, - * respectively. The default is subpixel support if - * TT_CONFIG_OPTION_SUBPIXEL_HINTING is defined, and no subpixel - * support otherwise (since it isn't available then). - * - * If subpixel hinting is on, many TrueType bytecode instructions - * behave differently compared to B/W or grayscale rendering. The - * main idea is to render at a much increased horizontal resolution, - * then sampling down the created output to subpixel precision. - * However, many older fonts are not suited to this and must be - * specially taken care of by applying (hardcoded) font-specific - * tweaks. - * - * Details on subpixel hinting and some of the necessary tweaks can be - * found in Greg Hitchcock's whitepaper at - * `http://www.microsoft.com/typography/cleartype/truetypecleartype.aspx'. - * - * The following example code demonstrates how to activate subpixel - * hinting (omitting the error handling). - * - * { - * FT_Library library; - * FT_Face face; - * FT_UInt interpreter_version = TT_INTERPRETER_VERSION_38; - * - * - * FT_Init_FreeType( &library ); - * - * FT_Property_Set( library, "truetype", - * "interpreter-version", - * &interpreter_version ); - * } - * - * @note: - * This property can be used with @FT_Property_Get also. - * - */ - - - /************************************************************************** - * - * @enum: - * TT_INTERPRETER_VERSION_XXX - * - * @description: - * A list of constants used for the @interpreter-version property to - * select the hinting engine for Truetype fonts. - * - * The numeric value in the constant names represents the version - * number as returned by the `GETINFO' bytecode instruction. - * - * @values: - * TT_INTERPRETER_VERSION_35 :: - * Version~35 corresponds to MS rasterizer v.1.7 as used e.g. in - * Windows~98; only grayscale and B/W rasterizing is supported. - * - * TT_INTERPRETER_VERSION_38 :: - * Version~38 corresponds to MS rasterizer v.1.9; it is roughly - * equivalent to the hinting provided by DirectWrite ClearType (as - * can be found, for example, in the Internet Explorer~9 running on - * Windows~7). - * - * @note: - * This property controls the behaviour of the bytecode interpreter - * and thus how outlines get hinted. It does *not* control how glyph - * get rasterized! In particular, it does not control subpixel color - * filtering. - * - * If FreeType has not been compiled with configuration option - * FT_CONFIG_OPTION_SUBPIXEL_HINTING, selecting version~38 causes an - * `FT_Err_Unimplemented_Feature' error. - * - * Depending on the graphics framework, Microsoft uses different - * bytecode engines. As a consequence, the version numbers returned by - * a call to the `GETINFO[1]' bytecode instruction are more convoluted - * than desired. - * - * { - * framework Windows version result of GETINFO[1] - * ---------------------------------------------------- - * GDI before XP 35 - * GDI XP and later 37 - * GDI+ old before Vista 37 - * GDI+ old Vista, 7 38 - * GDI+ after 7 40 - * DWrite before 8 39 - * DWrite 8 and later 40 - * } - * - * Since FreeType doesn't provide all capabilities of DWrite ClearType, - * using version~38 seems justified. - * - */ -#define TT_INTERPRETER_VERSION_35 35 -#define TT_INTERPRETER_VERSION_38 38 - - /* */ - - -FT_END_HEADER - - -#endif /* __FTTTDRV_H__ */ - - -/* END */ |