freetype/include/ftbbox.h
Werner Lemberg fae3820764 Simplify header file hierarchy.
This large patch changes the header file directory layout from
`include/freetype/...' to `include/...', effectively removing one
level.  Since the file `ft2build.h' is also located in `include'
(and it stays there even after installation), all FreeType header
files are now in a single directory.

Applications that use (a) `freetype-config' or FreeType's
`pkg-config' file to get the include directory for the compiler, and
(b) the documented way for header inclusion like

  #include <ft2build.h>
  #include FT_FREETYPE_H
  ...

don't need any change to the source code.

* include/freetype/*: Move up to...
* include/*: ... this directory.

* builds/amiga/include/freetype/*: Move up to...
* builds/amiga/include/*: ... this directory.

*/*: Essentially do `s@/freetype/@/@' where appropriate.

* CMakeList.txt: Simplify.
* builds/unix/freetype-config.in, builds/unix/freetype2.in: For
`--cflags', return a single directory.
* builds/unix/install.mk (install): No longer try to remove `cache'
and `internal' subdirectories; instead, remove the `freetype'
subdirectory.
2013-11-13 08:55:46 +01:00

103 lines
5.1 KiB
C

/***************************************************************************/
/* */
/* ftbbox.h */
/* */
/* FreeType exact bbox computation (specification). */
/* */
/* Copyright 1996-2001, 2003, 2007, 2011, 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. */
/* */
/***************************************************************************/
/*************************************************************************/
/* */
/* This component has a _single_ role: to compute exact outline bounding */
/* boxes. */
/* */
/* It is separated from the rest of the engine for various technical */
/* reasons. It may well be integrated in `ftoutln' later. */
/* */
/*************************************************************************/
#ifndef __FTBBOX_H__
#define __FTBBOX_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> */
/* outline_processing */
/* */
/*************************************************************************/
/*************************************************************************/
/* */
/* <Function> */
/* FT_Outline_Get_BBox */
/* */
/* <Description> */
/* Compute the exact bounding box of an outline. This is slower */
/* than computing the control box. However, it uses an advanced */
/* algorithm that returns _very_ quickly when the two boxes */
/* coincide. Otherwise, the outline Bézier arcs are traversed to */
/* extract their extrema. */
/* */
/* <Input> */
/* outline :: A pointer to the source outline. */
/* */
/* <Output> */
/* abbox :: The outline's exact bounding box. */
/* */
/* <Return> */
/* FreeType error code. 0~means success. */
/* */
/* <Note> */
/* If the font is tricky and the glyph has been loaded with */
/* @FT_LOAD_NO_SCALE, the resulting BBox is meaningless. To get */
/* reasonable values for the BBox it is necessary to load the glyph */
/* at a large ppem value (so that the hinting instructions can */
/* properly shift and scale the subglyphs), then extracting the BBox, */
/* which can be eventually converted back to font units. */
/* */
FT_EXPORT( FT_Error )
FT_Outline_Get_BBox( FT_Outline* outline,
FT_BBox *abbox );
/* */
FT_END_HEADER
#endif /* __FTBBOX_H__ */
/* END */
/* Local Variables: */
/* coding: utf-8 */
/* End: */