third_party/freetype/include/internal/autohint.h - Issue 1416993005: Merge to XFA: Update bundled freetype to 2.6.1

Unified Diff: third_party/freetype/include/internal/autohint.h

Issue 1416993005: Merge to XFA: Update bundled freetype to 2.6.1 (Closed) Base URL: https://pdfium.googlesource.com/pdfium.git@xfa

Patch Set: Created 5 years, 1 month ago

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Index: third_party/freetype/include/internal/autohint.h

diff --git a/third_party/freetype/include/internal/autohint.h b/third_party/freetype/include/internal/autohint.h

deleted file mode 100644

index 545de938c27c9230daa8e2ee892d4e382955171c..0000000000000000000000000000000000000000

--- a/third_party/freetype/include/internal/autohint.h

+++ /dev/null

@@ -1,244 +0,0 @@

-/***************************************************************************/

-/* */

-/* autohint.h */

-/* */

-/* High-level `autohint' module-specific interface (specification). */

-/* */

-/* 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. */

-/* */

-/***************************************************************************/

- /*************************************************************************/

- /* */

- /* The auto-hinter is used to load and automatically hint glyphs if a */

- /* format-specific hinter isn't available. */

- /* */

- /*************************************************************************/

-#ifndef __AUTOHINT_H__

-#define __AUTOHINT_H__

- /*************************************************************************/

- /* */

- /* A small technical note regarding automatic hinting in order to */

- /* clarify this module interface. */

- /* */

- /* An automatic hinter might compute two kinds of data for a given face: */

- /* */

- /* - global hints: Usually some metrics that describe global properties */

- /* of the face. It is computed by scanning more or less */

- /* aggressively the glyphs in the face, and thus can be */

- /* very slow to compute (even if the size of global */

- /* hints is really small). */

- /* */

- /* - glyph hints: These describe some important features of the glyph */

- /* outline, as well as how to align them. They are */

- /* generally much faster to compute than global hints. */

- /* */

- /* The current FreeType auto-hinter does a pretty good job while */

- /* performing fast computations for both global and glyph hints. */

- /* However, we might be interested in introducing more complex and */

- /* powerful algorithms in the future, like the one described in the John */

- /* D. Hobby paper, which unfortunately requires a lot more horsepower. */

- /* */

- /* Because a sufficiently sophisticated font management system would */

- /* typically implement an LRU cache of opened face objects to reduce */

- /* memory usage, it is a good idea to be able to avoid recomputing */

- /* global hints every time the same face is re-opened. */

- /* */

- /* We thus provide the ability to cache global hints outside of the face */

- /* object, in order to speed up font re-opening time. Of course, this */

- /* feature is purely optional, so most client programs won't even notice */

- /* it. */

- /* */

- /* I initially thought that it would be a good idea to cache the glyph */

- /* hints too. However, my general idea now is that if you really need */

- /* to cache these too, you are simply in need of a new font format, */

- /* where all this information could be stored within the font file and */

- /* decoded on the fly. */

- /* */

- /*************************************************************************/

-#include <ft2build.h>

-#include FT_FREETYPE_H

-FT_BEGIN_HEADER

- typedef struct FT_AutoHinterRec_ *FT_AutoHinter;

- /*************************************************************************/

- /* */

- /* <FuncType> */

- /* FT_AutoHinter_GlobalGetFunc */

- /* */

- /* <Description> */

- /* Retrieve the global hints computed for a given face object. The */

- /* resulting data is dissociated from the face and will survive a */

- /* call to FT_Done_Face(). It must be discarded through the API */

- /* FT_AutoHinter_GlobalDoneFunc(). */

- /* */

- /* <Input> */

- /* hinter :: A handle to the source auto-hinter. */

- /* */

- /* face :: A handle to the source face object. */

- /* */

- /* <Output> */

- /* global_hints :: A typeless pointer to the global hints. */

- /* */

- /* global_len :: The size in bytes of the global hints. */

- /* */

- typedef void

- (*FT_AutoHinter_GlobalGetFunc)( FT_AutoHinter hinter,

- FT_Face face,

- void** global_hints,

- long* global_len );

- /*************************************************************************/

- /* */

- /* <FuncType> */

- /* FT_AutoHinter_GlobalDoneFunc */

- /* */

- /* <Description> */

- /* Discard the global hints retrieved through */

- /* FT_AutoHinter_GlobalGetFunc(). This is the only way these hints */

- /* are freed from memory. */

- /* */

- /* <Input> */

- /* hinter :: A handle to the auto-hinter module. */

- /* */

- /* global :: A pointer to retrieved global hints to discard. */

- /* */

- typedef void

- (*FT_AutoHinter_GlobalDoneFunc)( FT_AutoHinter hinter,

- void* global );

- /*************************************************************************/

- /* */

- /* <FuncType> */

- /* FT_AutoHinter_GlobalResetFunc */

- /* */

- /* <Description> */

- /* This function is used to recompute the global metrics in a given */

- /* font. This is useful when global font data changes (e.g. Multiple */

- /* Masters fonts where blend coordinates change). */

- /* */

- /* <Input> */

- /* hinter :: A handle to the source auto-hinter. */

- /* */

- /* face :: A handle to the face. */

- /* */

- typedef void

- (*FT_AutoHinter_GlobalResetFunc)( FT_AutoHinter hinter,

- FT_Face face );

- /*************************************************************************/

- /* */

- /* <FuncType> */

- /* FT_AutoHinter_GlyphLoadFunc */

- /* */

- /* <Description> */

- /* This function is used to load, scale, and automatically hint a */

- /* glyph from a given face. */

- /* */

- /* <Input> */

- /* face :: A handle to the face. */

- /* */

- /* glyph_index :: The glyph index. */

- /* */

- /* load_flags :: The load flags. */

- /* */

- /* <Note> */

- /* This function is capable of loading composite glyphs by hinting */

- /* each sub-glyph independently (which improves quality). */

- /* */

- /* It will call the font driver with @FT_Load_Glyph, with */

- /* @FT_LOAD_NO_SCALE set. */

- /* */

- typedef FT_Error

- (*FT_AutoHinter_GlyphLoadFunc)( FT_AutoHinter hinter,

- FT_GlyphSlot slot,

- FT_Size size,

- FT_UInt glyph_index,

- FT_Int32 load_flags );

- /*************************************************************************/

- /* */

- /* <Struct> */

- /* FT_AutoHinter_InterfaceRec */

- /* */

- /* <Description> */

- /* The auto-hinter module's interface. */

- /* */

- typedef struct FT_AutoHinter_InterfaceRec_

- {

- FT_AutoHinter_GlobalResetFunc reset_face;

- FT_AutoHinter_GlobalGetFunc get_global_hints;

- FT_AutoHinter_GlobalDoneFunc done_global_hints;

- FT_AutoHinter_GlyphLoadFunc load_glyph;

- } FT_AutoHinter_InterfaceRec, *FT_AutoHinter_Interface;

-#ifndef FT_CONFIG_OPTION_PIC

-#define FT_DEFINE_AUTOHINTER_INTERFACE( \

- class_, \

- reset_face_, \

- get_global_hints_, \

- done_global_hints_, \

- load_glyph_ ) \

- FT_CALLBACK_TABLE_DEF \

- const FT_AutoHinter_InterfaceRec class_ = \

- { \

- reset_face_, \

- get_global_hints_, \

- done_global_hints_, \

- load_glyph_ \

- };

-#else /* FT_CONFIG_OPTION_PIC */

-#define FT_DEFINE_AUTOHINTER_INTERFACE( \

- class_, \

- reset_face_, \

- get_global_hints_, \

- done_global_hints_, \

- load_glyph_ ) \

- void \

- FT_Init_Class_ ## class_( FT_Library library, \

- FT_AutoHinter_InterfaceRec* clazz ) \

- { \

- FT_UNUSED( library ); \

- \

- clazz->reset_face = reset_face_; \

- clazz->get_global_hints = get_global_hints_; \

- clazz->done_global_hints = done_global_hints_; \

- clazz->load_glyph = load_glyph_; \

- }

-#endif /* FT_CONFIG_OPTION_PIC */

-FT_END_HEADER

-#endif /* __AUTOHINT_H__ */

-/* END */

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