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Code Issues 4 Releases Wiki Activity

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Werner Lemberg 2006-04-01 18:49:07 +00:00
parent cf60371a1b
commit 4091786c81
4 changed files with 119 additions and 116 deletions
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8
ChangeLog
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@ -1,9 +1,9 @@
2006-04-01 David Turner <david@freetype.org> 2006-04-01 David Turner <david@freetype.org>
* docs/CHANGES: update * docs/CHANGES: Updated.
* include/freetype/ftcache.h, include/freetype/config/ftheader.h: * include/freetype/ftcache.h, include/freetype/config/ftheader.h:
updating documentation comments Update documentation comments.
2006-04-01 Werner Lemberg <wl@gnu.org> 2006-04-01 Werner Lemberg <wl@gnu.org>

6
docs/CHANGES
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@ -42,8 +42,8 @@ LATEST CHANGES BETWEEN 2.2 and 2.1.10
- The LIGHT hinting algorithm produces more pleasant results. - The LIGHT hinting algorithm produces more pleasant results.
Also, using the FT_LOAD_TARGET_LIGHT flags within FT_Load_Glyph Also, using the FT_LOAD_TARGET_LIGHT flags within FT_Load_Glyph
always forces auto-hinting, as a special exception. This allows always forces auto-hinting, as a special exception. This allows
you to experiment with it even if you have enabled the TrueType you to experiment with it even if you have enabled the TrueType
bytecode interpreter in your build. bytecode interpreter in your build.
- The auto hinter now employs a new algorithm for CJK fonts, based - The auto hinter now employs a new algorithm for CJK fonts, based
@ -77,7 +77,7 @@ LATEST CHANGES BETWEEN 2.2 and 2.1.10
bitmap strikes should be updated to use this function. bitmap strikes should be updated to use this function.
- A new API `FT_Get_SubGlyph_Info' has been added to retrieve - A new API `FT_Get_SubGlyph_Info' has been added to retrieve
subglyph data. This can be used by rogue clients which used to subglyph data. This can be used by rogue clients which used to
access the internal headers to get the corresponding data. access the internal headers to get the corresponding data.
- In 2.1.10, the behaviour of `FT_Set_Pixel_Sizes' was changed for - In 2.1.10, the behaviour of `FT_Set_Pixel_Sizes' was changed for

16
include/freetype/config/ftheader.h
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@ -623,9 +623,9 @@
* *
* @description: * @description:
* A macro used in #include statements to name the file containing the * A macro used in #include statements to name the file containing the
* FreeType 2 API used to stroke outline path * FreeType 2 API used to stroke outline path.
*/ */
#define FT_STROKER_H <freetype/ftstroke.h> #define FT_STROKER_H <freetype/ftstroke.h>
/************************************************************************* /*************************************************************************
@ -635,9 +635,9 @@
* *
* @description: * @description:
* A macro used in #include statements to name the file containing the * A macro used in #include statements to name the file containing the
* FreeType 2 API used to perform artificial obliquing and emboldening * FreeType 2 API used to perform artificial obliquing and emboldening.
*/ */
#define FT_SYNTHESIS_H <freetype/ftsynth.h> #define FT_SYNTHESIS_H <freetype/ftsynth.h>
/************************************************************************* /*************************************************************************
@ -648,9 +648,9 @@
* @description: * @description:
* A macro used in #include statements to name the file containing the * A macro used in #include statements to name the file containing the
* FreeType 2 API used to provide functions specific to the XFree86 and * FreeType 2 API used to provide functions specific to the XFree86 and
* X.Org X11 servers * X.Org X11 servers.
*/ */
#define FT_XFREE86_H <freetype/ftxf86.h> #define FT_XFREE86_H <freetype/ftxf86.h>
/************************************************************************* /*************************************************************************
@ -660,10 +660,10 @@
* *
* @description: * @description:
* A macro used in #include statements to name the file containing the * A macro used in #include statements to name the file containing the
* FreeType 2 API used to perform trigonometric computations (e.g. * FreeType 2 API used to perform trigonometric computations (e.g.,
* cosines and arc tangents). * cosines and arc tangents).
*/ */
#define FT_TRIGONOMETRY_H <freetype/fttrigon.h> #define FT_TRIGONOMETRY_H <freetype/fttrigon.h>
/* */ /* */

205
include/freetype/ftcache.h
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@ -46,38 +46,39 @@ FT_BEGIN_HEADER
* *
* Note that all types and functions begin with the FTC_ prefix. * Note that all types and functions begin with the FTC_ prefix.
* *
* the cache is highly portable and thus doesn't know anything about * The cache is highly portable and thus doesn't know anything about the
* the fonts installed on your system, or how to access them. This implies * fonts installed on your system, or how to access them. This implies
* the following scheme: * the following scheme:
* *
* first, available/installed font faces are uniquely identified by * First, available or installed font faces are uniquely identified by
* @FTC_FaceID values provided to the cache by the client. Note that the * @FTC_FaceID values, provided to the cache by the client. Note that
* cache only stores and compares these values, and doesn't try to * the cache only stores and compares these values, and doesn't try to
* interpret them in any way. * interpret them in any way.
* *
* Second, the cache will call, only when needed, a client-provided * Second, the cache calls, only when needed, a client-provided function
* function to convert a @FTC_FaceID into a new @FT_Face object. The latter * to convert a @FTC_FaceID into a new @FT_Face object. The latter is
* will then be completely managed by the cache, including its termination * then completely managed by the cache, including its termination
* through @FT_Done_Face. * through @FT_Done_Face.
* *
* Clients are free to map face ids to anything. The most simple usage is * Clients are free to map face IDs to anything else. The most simple
* to associate them to a (pathname,face_index) pair that is used to call * usage is to associate them to a (pathname,face_index) pair that is
* @FT_New_Face. However, more complex schemes are also possible. * used to call @FT_New_Face. However, more complex schemes are also
* possible.
* *
* Note that for the cache to work correctly, the face id values must be * Note that for the cache to work correctly, the face ID values must be
* *persistent*, which means that the content they point to should not * *persistent*, which means that the contents they point to should not
* change at runtime, or that their value should not become invalid. * change at runtime, or that their value should not become invalid.
* *
* If this is unavoidable (e.g. when a font is uninstalled at runtime), * If this is unavoidable (e.g., when a font is uninstalled at runtime),
* you should call @FTC_Manager_RemoveFaceID as soon as possible, to let * you should call @FTC_Manager_RemoveFaceID as soon as possible, to let
* the cache get rid of any references to the old @FTC_FaceID it may * the cache get rid of any references to the old @FTC_FaceID it may
* keep internally. Failure to do so will lead to incorrect behaviour * keep internally. Failure to do so will lead to incorrect behaviour
* or even crashes. * or even crashes.
* *
* To use the cache, start by calling @FTC_Manager_New to create a new * To use the cache, start with calling @FTC_Manager_New to create a new
* @FTC_Manager object, which models a single cache instance. You can * @FTC_Manager object, which models a single cache instance. You can
* then lookup @FT_Face and @FT_Size objects with @FTC_Manager_LookupFace * then look up @FT_Face and @FT_Size objects with
* and @FTC_Manager_LookupSize respectively. * @FTC_Manager_LookupFace and @FTC_Manager_LookupSize, respectively.
* *
* If you want to use the charmap caching, call @FTC_CMapCache_New, then * If you want to use the charmap caching, call @FTC_CMapCache_New, then
* later use @FTC_CMapCache_Lookup to perform the equivalent of * later use @FTC_CMapCache_Lookup to perform the equivalent of
@ -87,14 +88,13 @@ FT_BEGIN_HEADER
* later use @FTC_ImageCache_Lookup to retrieve the corresponding * later use @FTC_ImageCache_Lookup to retrieve the corresponding
* @FT_Glyph objects from the cache. * @FT_Glyph objects from the cache.
* *
* If you need lots of small bitmaps, it is much more memory efficient to * If you need lots of small bitmaps, it is much more memory efficient
* call @FTC_SBitCache_New, then later @FTC_SBitCache_Lookup, this returns * to call @FTC_SBitCache_New followed by @FTC_SBitCache_Lookup. This
* @FTC_SBitRec structures, which are used to store small bitmaps directly. * returns @FTC_SBitRec structures, which are used to store small
* (a small bitmap is one whose metrics and dimensions all fit in 8-bit * bitmaps directly. (A small bitmap is one whose metrics and
* integers). * dimensions all fit into 8-bit integers).
* *
* We hope to also provide a kerning cache in the near future. Stay * We hope to also provide a kerning cache in the near future.
* tuned.
* *
* *
* <Order> * <Order>
@ -139,65 +139,70 @@ FT_BEGIN_HEADER
/*************************************************************************/ /*************************************************************************/
/************************************************************************* /*************************************************************************
* *
* @type: FTC_FaceID * @type: FTC_FaceID
* *
* @description: * @description:
* An opaque pointer type that is used to identity face objects. The * An opaque pointer type that is used to identity face objects. The
* contents of such objects is application-dependent. * contents of such objects is application-dependent.
* *
* these pointers are typically used to point to a user-defined * These pointers are typically used to point to a user-defined
* structure containing a font file path, and face index. * structure containing a font file path, and face index.
* *
* @note: * @note:
* never use NULL as a valid @FTC_FaceID * Never use NULL as a valid @FTC_FaceID.
* *
* Face ids are passed by the client to the cache manager, which will * Face IDs are passed by the client to the cache manager, which calls,
* call, when needed, the @FTC_Face_Requester to translate them into * when needed, the @FTC_Face_Requester to translate them into new
* new @FT_Face objects * @FT_Face objects.
* *
* if the content of a given face id changes at runtime, or if the * If the content of a given face ID changes at runtime, or if the value
* value becomes invalid (e.g. when uninstalling a font), you should * becomes invalid (e.g., when uninstalling a font), you should
* immediately call @FTC_Manager_RemoveFaceID before any other cache * immediately call @FTC_Manager_RemoveFaceID before any other cache
* function. * function.
* *
* Failure to do so will result in incorrect behaviour or even * Failure to do so will result in incorrect behaviour or even
* memory leaks and crashes ! * memory leaks and crashes.
**/ */
typedef struct FTC_FaceIDRec_* FTC_FaceID; typedef struct FTC_FaceIDRec_* FTC_FaceID;
/************************************************************************ /************************************************************************
* *
* @functype: FTC_Face_Requester * @functype:
* * FTC_Face_Requester
* @description: *
* A callback function provided by client applications. It is used * @description:
* by the cache manager to translate a given @FTC_FaceID into a new * A callback function provided by client applications. It is used by
* valid @FT_Face object, on demand. * the cache manager to translate a given @FTC_FaceID into a new valid
* * @FT_Face object, on demand.
* <Input> *
* face_id :: The face ID to resolve. * <Input>
* * face_id ::
* library :: A handle to a FreeType library object. * The face ID to resolve.
* *
* req_data :: Application-provided request data (see note below). * library ::
* * A handle to a FreeType library object.
* <Output> *
* aface :: A new @FT_Face handle. * req_data ::
* * Application-provided request data (see note below).
* <Return> *
* FreeType error code. 0 means success. * <Output>
* * aface ::
* <Note> * A new @FT_Face handle.
* The third parameter 'req_data' is the same than the one passed *
* by the client when @FTC_Manager_New is called. * <Return>
* * FreeType error code. 0 means success.
* The face requester should not perform funny things on the returned *
* face object, like creating a new @FT_Size for it, or setting a * <Note>
* transformation through @FT_Set_Transform! * The third parameter `req_data' is the same as the one passed by the
**/ * client when @FTC_Manager_New is called.
*
* The face requester should not perform funny things on the returned
* face object, like creating a new @FT_Size for it, or setting a
* transformation through @FT_Set_Transform!
*/
typedef FT_Error typedef FT_Error
(*FTC_Face_Requester)( FTC_FaceID face_id, (*FTC_Face_Requester)( FTC_FaceID face_id,
FT_Library library, FT_Library library,
@ -234,12 +239,12 @@ FT_BEGIN_HEADER
/* It is used to cache one or more @FT_Face objects, along with */ /* It is used to cache one or more @FT_Face objects, along with */
/* corresponding @FT_Size objects. */ /* corresponding @FT_Size objects. */
/* */ /* */
/* the manager intentionally limits the total number of opened */ /* The manager intentionally limits the total number of opened */
/* @FT_Face and @FT_Size objects to limit memory usage. See the */ /* @FT_Face and @FT_Size objects to control memory usage. See the */
/* 'max_faces' and 'max_sizes' parameters of @FTC_Manager_New. */ /* `max_faces' and `max_sizes' parameters of @FTC_Manager_New. */
/* */ /* */
/* the manager is also used to cache 'nodes' of various types */ /* The manager is also used to cache `nodes' of various types while */
/* while limiting their total memory usage. */ /* limiting their total memory usage. */
/* */ /* */
/* All limitations are enforced by keeping lists of managed objects */ /* All limitations are enforced by keeping lists of managed objects */
/* in most-recently-used order, and flushing old nodes to make room */ /* in most-recently-used order, and flushing old nodes to make room */
@ -277,24 +282,23 @@ FT_BEGIN_HEADER
/* Creates a new cache manager. */ /* Creates a new cache manager. */
/* */ /* */
/* <Input> */ /* <Input> */
/* library :: The parent FreeType library handle to use. */ /* library :: The parent FreeType library handle to use. */
/* */ /* */
/* max_faces :: Maximum number of opened @FT_Face objects managed */ /* max_faces :: Maximum number of opened @FT_Face objects managed by */
/* by this cache instance. */ /* this cache instance. */
/* */ /* */
/* max_sizes :: Maximum number of opened @FT_Size objects managed */ /* max_sizes :: Maximum number of opened @FT_Size objects managed by */
/* by this cache instance. */ /* this cache instance. */
/* */ /* */
/* max_bytes :: Maximum number of bytes to use for cached data */ /* max_bytes :: Maximum number of bytes to use for cached data nodes. */
/* nodes. Use 0 for defaults. Note that this value */ /* Use 0 for defaults. Note that this value does not */
/* does not account for managed FT_Face and FT_Size */ /* account for managed FT_Face and FT_Size objects. */
/* objects. */
/* */ /* */
/* requester :: An application-provided callback used to translate */ /* requester :: An application-provided callback used to translate */
/* face IDs into real @FT_Face objects. */ /* face IDs into real @FT_Face objects. */
/* */ /* */
/* req_data :: A generic pointer that is passed to the requester */ /* req_data :: A generic pointer that is passed to the requester */
/* each time it is called (see @FTC_Face_Requester). */ /* each time it is called (see @FTC_Face_Requester). */
/* */ /* */
/* <Output> */ /* <Output> */
/* amanager :: A handle to a new manager object. 0 in case of */ /* amanager :: A handle to a new manager object. 0 in case of */
@ -376,7 +380,6 @@ FT_BEGIN_HEADER
/* the @FT_Set_Transform function) on a returned face! If you need */ /* the @FT_Set_Transform function) on a returned face! If you need */
/* to transform glyphs, do it yourself after glyph loading. */ /* to transform glyphs, do it yourself after glyph loading. */
/* */ /* */
/* <Note> */
/* When you perform a lookup, out-of-memory errors are detected */ /* When you perform a lookup, out-of-memory errors are detected */
/* _within_ the lookup and force incremental flushes of the cache */ /* _within_ the lookup and force incremental flushes of the cache */
/* until enough memory is released for the lookup to succeed. */ /* until enough memory is released for the lookup to succeed. */