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Update to fontconfig 2.11.1. Tested by shadchin@
2014-05-18 04:33:03 -06:00
Fontconfig Developers Reference, Version 2.11.1
Import fontconfig 2.10.91 in a separate directory to make room for a BSD make build system.
2013-03-09 06:33:45 -07:00
Copyright © 2002 Keith Packard
Permission to use, copy, modify, distribute, and sell this software and
its documentation for any purpose is hereby granted without fee, provided
that the above copyright notice appear in all copies and that both that
copyright notice and this permission notice appear in supporting
documentation, and that the name of the author(s) not be used in
advertising or publicity pertaining to distribution of the software
without specific, written prior permission. The authors make no
representations about the suitability of this software for any purpose. It
is provided "as is" without express or implied warranty.
THE AUTHOR(S) DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY SPECIAL, INDIRECT OR
CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
PERFORMANCE OF THIS SOFTWARE.
-------------------------------------------------------
Table of Contents
[1]DESCRIPTION
[2]FUNCTIONAL OVERVIEW
[3]Datatypes
[4]FUNCTIONS
DESCRIPTION
Fontconfig is a library designed to provide system-wide font
configuration, customization and application access.
--------------------------------------------------------------------------
FUNCTIONAL OVERVIEW
Fontconfig contains two essential modules, the configuration module which
builds an internal configuration from XML files and the matching module
which accepts font patterns and returns the nearest matching font.
--------------------------------------------------------------------------
FONT CONFIGURATION
The configuration module consists of the FcConfig datatype, libexpat and
FcConfigParse which walks over an XML tree and amends a configuration with
data found within. From an external perspective, configuration of the
library consists of generating a valid XML tree and feeding that to
FcConfigParse. The only other mechanism provided to applications for
changing the running configuration is to add fonts and directories to the
list of application-provided font files.
The intent is to make font configurations relatively static, and shared by
as many applications as possible. It is hoped that this will lead to more
stable font selection when passing names from one application to another.
XML was chosen as a configuration file format because it provides a format
which is easy for external agents to edit while retaining the correct
structure and syntax.
Font configuration is separate from font matching; applications needing to
do their own matching can access the available fonts from the library and
perform private matching. The intent is to permit applications to pick and
choose appropriate functionality from the library instead of forcing them
to choose between this library and a private configuration mechanism. The
hope is that this will ensure that configuration of fonts for all
applications can be centralized in one place. Centralizing font
configuration will simplify and regularize font installation and
customization.
--------------------------------------------------------------------------
FONT PROPERTIES
While font patterns may contain essentially any properties, there are some
well known properties with associated types. Fontconfig uses some of these
properties for font matching and font completion. Others are provided as a
convenience for the application's rendering mechanism.
Property Definitions
Property C Preprocessor Symbol Type Description
----------------------------------------------------
family FC_FAMILY String Font family names
familylang FC_FAMILYLANG String Language corresponding to
each family name
style FC_STYLE String Font style. Overrides weight
and slant
stylelang FC_STYLELANG String Language corresponding to
each style name
fullname FC_FULLNAME String Font face full name where
different from family and
family + style
fullnamelang FC_FULLNAMELANG String Language corresponding to
each fullname
slant FC_SLANT Int Italic, oblique or roman
weight FC_WEIGHT Int Light, medium, demibold,
bold or black
size FC_SIZE Double Point size
width FC_WIDTH Int Condensed, normal or expanded
aspect FC_ASPECT Double Stretches glyphs horizontally
before hinting
pixelsize FC_PIXEL_SIZE Double Pixel size
spacing FC_SPACING Int Proportional, dual-width,
monospace or charcell
foundry FC_FOUNDRY String Font foundry name
antialias FC_ANTIALIAS Bool Whether glyphs can be
antialiased
hinting FC_HINTING Bool Whether the rasterizer should
use hinting
hintstyle FC_HINT_STYLE Int Automatic hinting style
verticallayout FC_VERTICAL_LAYOUT Bool Use vertical layout
autohint FC_AUTOHINT Bool Use autohinter instead of
normal hinter
globaladvance FC_GLOBAL_ADVANCE Bool Use font global advance data (deprecated)
file FC_FILE String The filename holding the font
index FC_INDEX Int The index of the font within
the file
ftface FC_FT_FACE FT_Face Use the specified FreeType
face object
Update to fontconfig 2.11.1. Tested by shadchin@
2014-05-18 04:33:03 -06:00
rasterizer FC_RASTERIZER String Which rasterizer is in use (deprecated)
Import fontconfig 2.10.91 in a separate directory to make room for a BSD make build system.
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outline FC_OUTLINE Bool Whether the glyphs are outlines
scalable FC_SCALABLE Bool Whether glyphs can be scaled
scale FC_SCALE Double Scale factor for point->pixel
conversions
dpi FC_DPI Double Target dots per inch
rgba FC_RGBA Int unknown, rgb, bgr, vrgb,
vbgr, none - subpixel geometry
lcdfilter FC_LCD_FILTER Int Type of LCD filter
minspace FC_MINSPACE Bool Eliminate leading from line
spacing
charset FC_CHARSET CharSet Unicode chars encoded by
the font
lang FC_LANG LangSet Set of RFC-3066-style
languages this font supports
fontversion FC_FONTVERSION Int Version number of the font
capability FC_CAPABILITY String List of layout capabilities in
the font
embolden FC_EMBOLDEN Bool Rasterizer should
synthetically embolden the font
Update to fontconfig 2.11.1. Tested by shadchin@
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fontfeatures FC_FONT_FEATURES String List of extra feature tags in
OpenType to be enabled
Import fontconfig 2.10.91 in a separate directory to make room for a BSD make build system.
2013-03-09 06:33:45 -07:00
namelang FC_NAMELANG String Language name to be used for the
default value of familylang,
stylelang and fullnamelang
Update to fontconfig 2.11.1. Tested by shadchin@
2014-05-18 04:33:03 -06:00
prgname FC_PRGNAME String Name of the running program
hash FC_HASH String SHA256 hash value of the font data
with "sha256:" prefix.
postscriptname FC_POSTSCRIPT_NAME String Font name in PostScript
Import fontconfig 2.10.91 in a separate directory to make room for a BSD make build system.
2013-03-09 06:33:45 -07:00
--------------------------------------------------------------------------
Datatypes
Fontconfig uses abstract data types to hide internal implementation
details for most data structures. A few structures are exposed where
appropriate.
--------------------------------------------------------------------------
FcChar8, FcChar16, FcChar32, FcBool
These are primitive data types; the FcChar* types hold precisely the
number of bits stated (if supported by the C implementation). FcBool holds
one of two C preprocessor symbols: FcFalse or FcTrue.
--------------------------------------------------------------------------
FcMatrix
An FcMatrix holds an affine transformation, usually used to reshape
glyphs. A small set of matrix operations are provided to manipulate these.
typedef struct _FcMatrix {
double xx, xy, yx, yy;
} FcMatrix;
--------------------------------------------------------------------------
FcCharSet
An FcCharSet is an abstract type that holds the set of encoded Unicode
chars in a font. Operations to build and compare these sets are provided.
--------------------------------------------------------------------------
FcLangSet
An FcLangSet is an abstract type that holds the set of languages supported
by a font. Operations to build and compare these sets are provided. These
are computed for a font based on orthographic information built into the
fontconfig library. Fontconfig has orthographies for all of the ISO 639-1
languages except for MS, NA, PA, PS, QU, RN, RW, SD, SG, SN, SU and ZA. If
you have orthographic information for any of these languages, please
submit them.
--------------------------------------------------------------------------
FcLangResult
An FcLangResult is an enumeration used to return the results of comparing
two language strings or FcLangSet objects. FcLangEqual means the objects
match language and territory. FcLangDifferentTerritory means the objects
match in language but differ in territory. FcLangDifferentLang means the
objects differ in language.
--------------------------------------------------------------------------
FcType
Tags the kind of data stored in an FcValue.
--------------------------------------------------------------------------
FcValue
An FcValue object holds a single value with one of a number of different
types. The 'type' tag indicates which member is valid.
typedef struct _FcValue {
FcType type;
union {
const FcChar8 *s;
int i;
FcBool b;
double d;
const FcMatrix *m;
const FcCharSet *c;
void *f;
const FcLangSet *l;
} u;
} FcValue;
FcValue Members
Type Union member Datatype
--------------------------------
FcTypeVoid (none) (none)
FcTypeInteger i int
FcTypeDouble d double
FcTypeString s FcChar8 *
FcTypeBool b b
FcTypeMatrix m FcMatrix *
FcTypeCharSet c FcCharSet *
FcTypeFTFace f void * (FT_Face)
FcTypeLangSet l FcLangSet *
--------------------------------------------------------------------------
FcPattern
holds a set of names with associated value lists; each name refers to a
property of a font. FcPatterns are used as inputs to the matching code as
well as holding information about specific fonts. Each property can hold
one or more values; conventionally all of the same type, although the
interface doesn't demand that.
--------------------------------------------------------------------------
FcFontSet
typedef struct _FcFontSet {
int nfont;
int sfont;
FcPattern **fonts;
} FcFontSet;
An FcFontSet contains a list of FcPatterns. Internally fontconfig uses
this data structure to hold sets of fonts. Externally, fontconfig returns
the results of listing fonts in this format. 'nfont' holds the number of
patterns in the 'fonts' array; 'sfont' is used to indicate the size of
that array.
--------------------------------------------------------------------------
FcStrSet, FcStrList
FcStrSet holds a list of strings that can be appended to and enumerated.
Its unique characteristic is that the enumeration works even while strings
are appended during enumeration. FcStrList is used during enumeration to
safely and correctly walk the list of strings even while that list is
edited in the middle of enumeration.
--------------------------------------------------------------------------
FcObjectSet
typedef struct _FcObjectSet {
int nobject;
int sobject;
const char **objects;
} FcObjectSet;
holds a set of names and is used to specify which fields from fonts are
placed in the the list of returned patterns when listing fonts.
--------------------------------------------------------------------------
FcObjectType
typedef struct _FcObjectType {
const char *object;
FcType type;
} FcObjectType;
marks the type of a pattern element generated when parsing font names.
Applications can add new object types so that font names may contain the
new elements.
--------------------------------------------------------------------------
FcConstant
typedef struct _FcConstant {
const FcChar8 *name;
const char *object;
int value;
} FcConstant;
Provides for symbolic constants for new pattern elements. When 'name' is
seen in a font name, an 'object' element is created with value 'value'.
--------------------------------------------------------------------------
FcBlanks
holds a list of Unicode chars which are expected to be blank; unexpectedly
blank chars are assumed to be invalid and are elided from the charset
associated with the font.
--------------------------------------------------------------------------
FcFileCache
holds the per-user cache information for use while loading the font
database. This is built automatically for the current configuration when
that is loaded. Applications must always pass '0' when one is requested.
--------------------------------------------------------------------------
FcConfig
holds a complete configuration of the library; there is one default
configuration, other can be constructed from XML data structures. All
public entry points that need global data can take an optional FcConfig*
argument; passing 0 uses the default configuration. FcConfig objects hold
two sets of fonts, the first contains those specified by the
configuration, the second set holds those added by the application at
run-time. Interfaces that need to reference a particular set use one of
the FcSetName enumerated values.
--------------------------------------------------------------------------
FcSetName
Specifies one of the two sets of fonts available in a configuration;
FcSetSystem for those fonts specified in the configuration and
FcSetApplication which holds fonts provided by the application.
--------------------------------------------------------------------------
FcResult
Used as a return type for functions manipulating FcPattern objects.
FcResult Values
Result Code Meaning
-----------------------------------------------------------
FcResultMatch Object exists with the specified ID
FcResultNoMatch Object doesn't exist at all
FcResultTypeMismatch Object exists, but the type doesn't match
FcResultNoId Object exists, but has fewer values
than specified
FcResultOutOfMemory malloc failed
--------------------------------------------------------------------------
FcAtomic
Used for locking access to configuration files. Provides a safe way to
update configuration files.
--------------------------------------------------------------------------
FcCache
Holds information about the fonts contained in a single directory. Normal
applications need not worry about this as caches for font access are
automatically managed by the library. Applications dealing with cache
management may want to use some of these objects in their work, however
the included 'fc-cache' program generally suffices for all of that.
--------------------------------------------------------------------------
FUNCTIONS
These are grouped by functionality, often using the main data type being
manipulated.
--------------------------------------------------------------------------
Initialization
Table of Contents
[5]FcInitLoadConfig -- load configuration
[6]FcInitLoadConfigAndFonts -- load configuration and font data
[7]FcInit -- initialize fontconfig library
[8]FcFini -- finalize fontconfig library
[9]FcGetVersion -- library version number
[10]FcInitReinitialize -- re-initialize library
[11]FcInitBringUptoDate -- reload configuration files if needed
These functions provide some control over how the library is initialized.
FcInitLoadConfig
Name
FcInitLoadConfig -- load configuration
Synopsis
#include <fontconfig/fontconfig.h>
FcConfig * FcInitLoadConfig(void);
Description
Loads the default configuration file and returns the resulting
configuration. Does not load any font information.
FcInitLoadConfigAndFonts
Name
FcInitLoadConfigAndFonts -- load configuration and font data
Synopsis
#include <fontconfig/fontconfig.h>
FcConfig * FcInitLoadConfigAndFonts(void);
Description
Loads the default configuration file and builds information about the
available fonts. Returns the resulting configuration.
FcInit
Name
FcInit -- initialize fontconfig library
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcInit(void);
Description
Loads the default configuration file and the fonts referenced therein and
sets the default configuration to that result. Returns whether this
process succeeded or not. If the default configuration has already been
loaded, this routine does nothing and returns FcTrue.
FcFini
Name
FcFini -- finalize fontconfig library
Synopsis
#include <fontconfig/fontconfig.h>
void FcFini(void);
Description
Frees all data structures allocated by previous calls to fontconfig
functions. Fontconfig returns to an uninitialized state, requiring a new
call to one of the FcInit functions before any other fontconfig function
may be called.
FcGetVersion
Name
FcGetVersion -- library version number
Synopsis
#include <fontconfig/fontconfig.h>
int FcGetVersion(void);
Description
Returns the version number of the library.
FcInitReinitialize
Name
FcInitReinitialize -- re-initialize library
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcInitReinitialize(void);
Description
Forces the default configuration file to be reloaded and resets the
default configuration. Returns FcFalse if the configuration cannot be
reloaded (due to configuration file errors, allocation failures or other
issues) and leaves the existing configuration unchanged. Otherwise returns
FcTrue.
FcInitBringUptoDate
Name
FcInitBringUptoDate -- reload configuration files if needed
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcInitBringUptoDate(void);
Description
Checks the rescan interval in the default configuration, checking the
configuration if the interval has passed and reloading the configuration
if when any changes are detected. Returns FcFalse if the configuration
cannot be reloaded (see FcInitReinitialize). Otherwise returns FcTrue.
--------------------------------------------------------------------------
FcPattern
Table of Contents
[12]FcPatternCreate -- Create a pattern
[13]FcPatternDuplicate -- Copy a pattern
[14]FcPatternReference -- Increment pattern reference count
[15]FcPatternDestroy -- Destroy a pattern
[16]FcPatternEqual -- Compare patterns
[17]FcPatternEqualSubset -- Compare portions of patterns
[18]FcPatternFilter -- Filter the objects of pattern
[19]FcPatternHash -- Compute a pattern hash value
[20]FcPatternAdd -- Add a value to a pattern
[21]FcPatternAddWeak -- Add a value to a pattern with weak binding
[22]FcPatternAdd-Type -- Add a typed value to a pattern
[23]FcPatternGet -- Return a value from a pattern
[24]FcPatternGet-Type -- Return a typed value from a pattern
[25]FcPatternBuild -- Create patterns from arguments
[26]FcPatternDel -- Delete a property from a pattern
[27]FcPatternRemove -- Remove one object of the specified type from the
pattern
[28]FcPatternPrint -- Print a pattern for debugging
[29]FcDefaultSubstitute -- Perform default substitutions in a pattern
[30]FcNameParse -- Parse a pattern string
[31]FcNameUnparse -- Convert a pattern back into a string that can be
parsed
[32]FcPatternFormat -- Format a pattern into a string according to a
format specifier
An FcPattern is an opaque type that holds both patterns to match against
the available fonts, as well as the information about each font.
FcPatternCreate
Name
FcPatternCreate -- Create a pattern
Synopsis
#include <fontconfig/fontconfig.h>
FcPattern * FcPatternCreate(void);
Description
Creates a pattern with no properties; used to build patterns from scratch.
FcPatternDuplicate
Name
FcPatternDuplicate -- Copy a pattern
Synopsis
#include <fontconfig/fontconfig.h>
FcPattern * FcPatternDuplicate(const FcPattern *p);
Description
Copy a pattern, returning a new pattern that matches p. Each pattern may
be modified without affecting the other.
FcPatternReference
Name
FcPatternReference -- Increment pattern reference count
Synopsis
#include <fontconfig/fontconfig.h>
void FcPatternReference(FcPattern *p);
Description
Add another reference to p. Patterns are freed only when the reference
count reaches zero.
FcPatternDestroy
Name
FcPatternDestroy -- Destroy a pattern
Synopsis
#include <fontconfig/fontconfig.h>
void FcPatternDestroy(FcPattern *p);
Description
Decrement the pattern reference count. If all references are gone,
destroys the pattern, in the process destroying all related values.
FcPatternEqual
Name
FcPatternEqual -- Compare patterns
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcPatternEqual(const FcPattern *pa, const FcPattern *pb);
Description
Returns whether pa and pb are exactly alike.
FcPatternEqualSubset
Name
FcPatternEqualSubset -- Compare portions of patterns
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcPatternEqualSubset(const FcPattern *pa, const FcPattern *pb,
const FcObjectSet *os);
Description
Returns whether pa and pb have exactly the same values for all of the
objects in os.
FcPatternFilter
Name
FcPatternFilter -- Filter the objects of pattern
Synopsis
#include <fontconfig/fontconfig.h>
FcPattern * FcPatternFilter(FcPattern *p, const FcObjectSet *);
Description
Returns a new pattern that only has those objects from p that are in os.
If os is NULL, a duplicate of p is returned.
FcPatternHash
Name
FcPatternHash -- Compute a pattern hash value
Synopsis
#include <fontconfig/fontconfig.h>
FcChar32 FcPatternHash(const FcPattern *p);
Description
Returns a 32-bit number which is the same for any two patterns which are
equal.
FcPatternAdd
Name
FcPatternAdd -- Add a value to a pattern
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcPatternAdd(FcPattern *p, const char *object, FcValue value,
FcBool append);
Description
Adds a single value to the list of values associated with the property
named `object. If `append is FcTrue, the value is added at the end of any
existing list, otherwise it is inserted at the beginning. `value' is saved
(with FcValueSave) when inserted into the pattern so that the library
retains no reference to any application-supplied data structure.
FcPatternAddWeak
Name
FcPatternAddWeak -- Add a value to a pattern with weak binding
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcPatternAddWeak(FcPattern *p, const char *object, FcValue value,
FcBool append);
Description
FcPatternAddWeak is essentially the same as FcPatternAdd except that any
values added to the list have binding weak instead of strong.
FcPatternAdd-Type
Name
FcPatternAddInteger, FcPatternAddDouble, FcPatternAddString,
FcPatternAddMatrix, FcPatternAddCharSet, FcPatternAddBool,
FcPatternAddFTFace, FcPatternAddLangSet -- Add a typed value to a pattern
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcPatternAddInteger(FcPattern *p, const char *object, int i);
FcBool FcPatternAddDouble(FcPattern *p, const char *object, double d);
FcBool FcPatternAddString(FcPattern *p, const char *object, const FcChar8
*s);
FcBool FcPatternAddMatrix(FcPattern *p, const char *object, const FcMatrix
*m);
FcBool FcPatternAddCharSet(FcPattern *p, const char *object, const
FcCharSet *c);
FcBool FcPatternAddBool(FcPattern *p, const char *object, FcBool b);
FcBool FcPatternAddFTFace(FcPattern *p, const char *object, const
FT_Facef);
FcBool FcPatternAddLangSet(FcPattern *p, const char *object, const
FcLangSet *l);
Description
These are all convenience functions that insert objects of the specified
type into the pattern. Use these in preference to FcPatternAdd as they
will provide compile-time typechecking. These all append values to any
existing list of values.
FcPatternGet
Name
FcPatternGet -- Return a value from a pattern
Synopsis
#include <fontconfig/fontconfig.h>
FcResult FcPatternGet(FcPattern *p, const char *object, int id, FcValue
*v);
Description
Returns in v the id'th value associated with the property object. The
value returned is not a copy, but rather refers to the data stored within
the pattern directly. Applications must not free this value.
FcPatternGet-Type
Name
FcPatternGetInteger, FcPatternGetDouble, FcPatternGetString,
FcPatternGetMatrix, FcPatternGetCharSet, FcPatternGetBool,
FcPatternGetFTFace, FcPatternGetLangSet -- Return a typed value from a
pattern
Synopsis
#include <fontconfig/fontconfig.h>
FcResult FcPatternGetInteger(FcPattern *p, const char *object, int n, int
*i);
FcResult FcPatternGetDouble(FcPattern *p, const char *object, int n,
double *d);
FcResult FcPatternGetString(FcPattern *p, const char *object, int n,
FcChar8 **s);
FcResult FcPatternGetMatrix(FcPattern *p, const char *object, int n,
FcMatrix **s);
FcResult FcPatternGetCharSet(FcPattern *p, const char *object, int n,
FcCharSet **c);
FcResult FcPatternGetBool(FcPattern *p, const char *object, int n, FcBool
*b);
FcResult FcPatternGetFTFace(FcPattern *p, const char *object, int n);
FcResult FcPatternGetLangSet(FcPattern *p, const char *object, FT_Face
*f);
Description
These are convenience functions that call FcPatternGet and verify that the
returned data is of the expected type. They return FcResultTypeMismatch if
this is not the case. Note that these (like FcPatternGet) do not make a
copy of any data structure referenced by the return value. Use these in
preference to FcPatternGet to provide compile-time typechecking.
FcPatternBuild
Name
FcPatternBuild, FcPatternVaBuild, FcPatternVapBuild -- Create patterns
from arguments
Synopsis
#include <fontconfig/fontconfig.h>
FcPattern * FcPatternBuild(FcPattern *pattern, ...);
FcPattern * FcPatternVaBuild(FcPattern *pattern, va_list va);
void FcPatternVapBuild(FcPattern *result, FcPattern *pattern, va_list va);
Description
Builds a pattern using a list of objects, types and values. Each value to
be entered in the pattern is specified with three arguments:
 1. Object name, a string describing the property to be added.
 2. Object type, one of the FcType enumerated values
 3. Value, not an FcValue, but the raw type as passed to any of the
FcPatternAdd<type> functions. Must match the type of the second
argument.
The argument list is terminated by a null object name, no object type nor
value need be passed for this. The values are added to `pattern', if
`pattern' is null, a new pattern is created. In either case, the pattern
is returned. Example
pattern = FcPatternBuild (0, FC_FAMILY, FcTypeString, "Times", (char *) 0);
FcPatternVaBuild is used when the arguments are already in the form of a
varargs value. FcPatternVapBuild is a macro version of FcPatternVaBuild
which returns its result directly in the result variable.
FcPatternDel
Name
FcPatternDel -- Delete a property from a pattern
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcPatternDel(FcPattern *p, const char *object);
Description
Deletes all values associated with the property `object', returning
whether the property existed or not.
FcPatternRemove
Name
FcPatternRemove -- Remove one object of the specified type from the
pattern
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcPatternRemove(FcPattern *p, const char *object, int id);
Description
Removes the value associated with the property `object' at position `id',
returning whether the property existed and had a value at that position or
not.
FcPatternPrint
Name
FcPatternPrint -- Print a pattern for debugging
Synopsis
#include <fontconfig/fontconfig.h>
void FcPatternPrint(const FcPattern *p);
Description
Prints an easily readable version of the pattern to stdout. There is no
provision for reparsing data in this format, it's just for diagnostics and
debugging.
FcDefaultSubstitute
Name
FcDefaultSubstitute -- Perform default substitutions in a pattern
Synopsis
#include <fontconfig/fontconfig.h>
void FcDefaultSubstitute(FcPattern *pattern);
Description
Supplies default values for underspecified font patterns:
* Patterns without a specified style or weight are set to Medium
* Patterns without a specified style or slant are set to Roman
* Patterns without a specified pixel size are given one computed from
any specified point size (default 12), dpi (default 75) and scale
(default 1).
FcNameParse
Name
FcNameParse -- Parse a pattern string
Synopsis
#include <fontconfig/fontconfig.h>
FcPattern * FcNameParse(const FcChar8 *name);
Description
Converts name from the standard text format described above into a
pattern.
FcNameUnparse
Name
FcNameUnparse -- Convert a pattern back into a string that can be parsed
Synopsis
#include <fontconfig/fontconfig.h>
FcChar8 * FcNameUnparse(FcPattern *pat);
Description
Converts the given pattern into the standard text format described above.
The return value is not static, but instead refers to newly allocated
memory which should be freed by the caller using free().
FcPatternFormat
Name
FcPatternFormat -- Format a pattern into a string according to a format
specifier
Synopsis
#include <fontconfig/fontconfig.h>
FcChar8 * FcPatternFormat(FcPattern *pat, const FcChar8 *format);
Description
Converts given pattern pat into text described by the format specifier
format. The return value refers to newly allocated memory which should be
freed by the caller using free(), or NULL if format is invalid.
The format is loosely modeled after printf-style format string. The
format string is composed of zero or more directives: ordinary characters
(not "%"), which are copied unchanged to the output stream; and tags which
are interpreted to construct text from the pattern in a variety of ways
(explained below). Special characters can be escaped using backslash.
C-string style special characters like \n and \r are also supported (this
is useful when the format string is not a C string literal). It is
advisable to always escape curly braces that are meant to be copied to the
output as ordinary characters.
Each tag is introduced by the character "%", followed by an optional
minimum field width, followed by tag contents in curly braces ({}). If the
minimum field width value is provided the tag will be expanded and the
result padded to achieve the minimum width. If the minimum field width is
positive, the padding will right-align the text. Negative field width will
left-align. The rest of this section describes various supported tag
contents and their expansion.
A simple tag is one where the content is an identifier. When simple tags
are expanded, the named identifier will be looked up in pattern and the
resulting list of values returned, joined together using comma. For
example, to print the family name and style of the pattern, use the format
"%{family} %{style}\n". To extend the family column to forty characters
use "%-40{family}%{style}\n".
Simple tags expand to list of all values for an element. To only choose
one of the values, one can index using the syntax "%{elt[idx]}". For
example, to get the first family name only, use "%{family[0]}".
If a simple tag ends with "=" and the element is found in the pattern,
the name of the element followed by "=" will be output before the list of
values. For example, "%{weight=}" may expand to the string "weight=80". Or
to the empty string if pattern does not have weight set.
If a simple tag starts with ":" and the element is found in the pattern,
":" will be printed first. For example, combining this with the =, the
format "%{:weight=}" may expand to ":weight=80" or to the empty string if
pattern does not have weight set.
If a simple tag contains the string ":-", the rest of the the tag
contents will be used as a default string. The default string is output if
the element is not found in the pattern. For example, the format
"%{:weight=:-123}" may expand to ":weight=80" or to the string
":weight=123" if pattern does not have weight set.
A count tag is one that starts with the character "#" followed by an
element name, and expands to the number of values for the element in the
pattern. For example, "%{#family}" expands to the number of family names
pattern has set, which may be zero.
A sub-expression tag is one that expands a sub-expression. The tag
contents are the sub-expression to expand placed inside another set of
curly braces. Sub-expression tags are useful for aligning an entire
sub-expression, or to apply converters (explained later) to the entire
sub-expression output. For example, the format "%40{{%{family} %{style}}}"
expands the sub-expression to construct the family name followed by the
style, then takes the entire string and pads it on the left to be at least
forty characters.
A filter-out tag is one starting with the character "-" followed by a
comma-separated list of element names, followed by a sub-expression
enclosed in curly braces. The sub-expression will be expanded but with a
pattern that has the listed elements removed from it. For example, the
format "%{-size,pixelsize{sub-expr}}" will expand "sub-expr" with pattern
sans the size and pixelsize elements.
A filter-in tag is one starting with the character "+" followed by a
comma-separated list of element names, followed by a sub-expression
enclosed in curly braces. The sub-expression will be expanded but with a
pattern that only has the listed elements from the surrounding pattern.
For example, the format "%{+family,familylang{sub-expr}}" will expand
"sub-expr" with a sub-pattern consisting only the family and family lang
elements of pattern.
A conditional tag is one starting with the character "?" followed by a
comma-separated list of element conditions, followed by two sub-expression
enclosed in curly braces. An element condition can be an element name, in
which case it tests whether the element is defined in pattern, or the
character "!" followed by an element name, in which case the test is
negated. The conditional passes if all the element conditions pass. The
tag expands the first sub-expression if the conditional passes, and
expands the second sub-expression otherwise. For example, the format
"%{?size,dpi,!pixelsize{pass}{fail}}" will expand to "pass" if pattern has
size and dpi elements but no pixelsize element, and to "fail" otherwise.
An enumerate tag is one starting with the string "[]" followed by a
comma-separated list of element names, followed by a sub-expression
enclosed in curly braces. The list of values for the named elements are
walked in parallel and the sub-expression expanded each time with a
pattern just having a single value for those elements, starting from the
first value and continuing as long as any of those elements has a value.
For example, the format "%{[]family,familylang{%{family}
(%{familylang})\n}}" will expand the pattern "%{family} (%{familylang})\n"
with a pattern having only the first value of the family and familylang
elements, then expands it with the second values, then the third, etc.
As a special case, if an enumerate tag has only one element, and that
element has only one value in the pattern, and that value is of type
FcLangSet, the individual languages in the language set are enumerated.
A builtin tag is one starting with the character "=" followed by a
builtin name. The following builtins are defined:
unparse
Expands to the result of calling FcNameUnparse() on the pattern.
fcmatch
Expands to the output of the default output format of the fc-match
command on the pattern, without the final newline.
fclist
Expands to the output of the default output format of the fc-list
command on the pattern, without the final newline.
fccat
Expands to the output of the default output format of the fc-cat
command on the pattern, without the final newline.
pkgkit
Expands to the list of PackageKit font() tags for the pattern.
Currently this includes tags for each family name, and each
language from the pattern, enumerated and sanitized into a set of
tags terminated by newline. Package management systems can use
these tags to tag their packages accordingly.
For example, the format "%{+family,style{%{=unparse}}}\n" will expand to
an unparsed name containing only the family and style element values from
pattern.
The contents of any tag can be followed by a set of zero or more
converters. A converter is specified by the character "|" followed by the
converter name and arguments. The following converters are defined:
basename
Replaces text with the results of calling FcStrBasename() on it.
dirname
Replaces text with the results of calling FcStrDirname() on it.
downcase
Replaces text with the results of calling FcStrDowncase() on it.
shescape
Escapes text for one level of shell expansion. (Escapes
single-quotes, also encloses text in single-quotes.)
cescape
Escapes text such that it can be used as part of a C string
literal. (Escapes backslash and double-quotes.)
xmlescape
Escapes text such that it can be used in XML and HTML. (Escapes
less-than, greater-than, and ampersand.)
delete(chars)
Deletes all occurrences of each of the characters in chars from
the text. FIXME: This converter is not UTF-8 aware yet.
escape(chars)
Escapes all occurrences of each of the characters in chars by
prepending it by the first character in chars. FIXME: This
converter is not UTF-8 aware yet.
translate(from,to)
Translates all occurrences of each of the characters in from by
replacing them with their corresponding character in to. If to has
fewer characters than from, it will be extended by repeating its
last character. FIXME: This converter is not UTF-8 aware yet.
For example, the format "%{family|downcase|delete( )}\n" will expand to
the values of the family element in pattern, lower-cased and with spaces
removed.
Update to fontconfig 2.11.1. Tested by shadchin@
2014-05-18 04:33:03 -06:00
Since
Import fontconfig 2.10.91 in a separate directory to make room for a BSD make build system.
2013-03-09 06:33:45 -07:00
Update to fontconfig 2.11.1. Tested by shadchin@
2014-05-18 04:33:03 -06:00
version 2.9.0
Import fontconfig 2.10.91 in a separate directory to make room for a BSD make build system.
2013-03-09 06:33:45 -07:00
--------------------------------------------------------------------------
FcFontSet
Table of Contents
[33]FcFontSetCreate -- Create a font set
[34]FcFontSetDestroy -- Destroy a font set
[35]FcFontSetAdd -- Add to a font set
[36]FcFontSetList -- List fonts from a set of font sets
[37]FcFontSetMatch -- Return the best font from a set of font sets
[38]FcFontSetPrint -- Print a set of patterns to stdout
[39]FcFontSetSort -- Add to a font set
[40]FcFontSetSortDestroy -- DEPRECATED destroy a font set
An FcFontSet simply holds a list of patterns; these are used to return the
results of listing available fonts.
FcFontSetCreate
Name
FcFontSetCreate -- Create a font set
Synopsis
#include <fontconfig/fontconfig.h>
FcFontSet * FcFontSetCreate(void);
Description
Creates an empty font set.
FcFontSetDestroy
Name
FcFontSetDestroy -- Destroy a font set
Synopsis
#include <fontconfig/fontconfig.h>
void FcFontSetDestroy(FcFontSet *s);
Description
Destroys a font set. Note that this destroys any referenced patterns as
well.
FcFontSetAdd
Name
FcFontSetAdd -- Add to a font set
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcFontSetAdd(FcFontSet *s, FcPattern *font);
Description
Adds a pattern to a font set. Note that the pattern is not copied before
being inserted into the set. Returns FcFalse if the pattern cannot be
inserted into the set (due to allocation failure). Otherwise returns
FcTrue.
FcFontSetList
Name
FcFontSetList -- List fonts from a set of font sets
Synopsis
#include <fontconfig/fontconfig.h>
FcFontSet * FcFontSetList(FcConfig *config, FcFontSet **sets, intnsets,
FcPattern *pattern, FcObjectSet *object_set);
Description
Selects fonts matching pattern from sets, creates patterns from those
fonts containing only the objects in object_set and returns the set of
unique such patterns. If config is NULL, the default configuration is
checked to be up to date, and used.
FcFontSetMatch
Name
FcFontSetMatch -- Return the best font from a set of font sets
Synopsis
#include <fontconfig/fontconfig.h>
FcPattern * FcFontSetMatch(FcConfig *config, FcFontSet **sets, intnsets,
FcPattern *pattern, FcResult *result);
Description
Finds the font in sets most closely matching pattern and returns the
result of FcFontRenderPrepare for that font and the provided pattern. This
function should be called only after FcConfigSubstitute and
FcDefaultSubstitute have been called for pattern; otherwise the results
will not be correct. If config is NULL, the current configuration is used.
Returns NULL if an error occurs during this process.
FcFontSetPrint
Name
FcFontSetPrint -- Print a set of patterns to stdout
Synopsis
#include <fontconfig/fontconfig.h>
void FcFontSetPrint(FcFontSet *set);
Description
This function is useful for diagnosing font related issues, printing the
complete contents of every pattern in set. The format of the output is
designed to be of help to users and developers, and may change at any
time.
FcFontSetSort
Name
FcFontSetSort -- Add to a font set
Synopsis
#include <fontconfig/fontconfig.h>
FcFontSetSort(FcConfig *config, FcFontSet **sets, intnsets, FcPattern
*pattern, FcBool trim, FcCharSet **csp, FcResult *result);
Description
Returns the list of fonts from sets sorted by closeness to pattern. If
trim is FcTrue, elements in the list which don't include Unicode coverage
not provided by earlier elements in the list are elided. The union of
Unicode coverage of all of the fonts is returned in csp, if csp is not
NULL. This function should be called only after FcConfigSubstitute and
FcDefaultSubstitute have been called for p; otherwise the results will not
be correct.
The returned FcFontSet references FcPattern structures which may be shared
by the return value from multiple FcFontSort calls, applications cannot
modify these patterns. Instead, they should be passed, along with pattern
to FcFontRenderPrepare which combines them into a complete pattern.
The FcFontSet returned by FcFontSetSort is destroyed by calling
FcFontSetDestroy.
FcFontSetSortDestroy
Name
FcFontSetSortDestroy -- DEPRECATED destroy a font set
Synopsis
#include <fontconfig/fontconfig.h>
FcFontSetSortDestroy(FcFontSet *set);
Description
This function is DEPRECATED. FcFontSetSortDestroy destroys set by calling
FcFontSetDestroy. Applications should use FcFontSetDestroy directly
instead.
--------------------------------------------------------------------------
FcObjectSet
Table of Contents
[41]FcObjectSetCreate -- Create an object set
[42]FcObjectSetAdd -- Add to an object set
[43]FcObjectSetDestroy -- Destroy an object set
[44]FcObjectSetBuild -- Build object set from args
An FcObjectSet holds a list of pattern property names; it is used to
indicate which properties are to be returned in the patterns from
FcFontList.
FcObjectSetCreate
Name
FcObjectSetCreate -- Create an object set
Synopsis
#include <fontconfig/fontconfig.h>
FcObjectSet * FcObjectSetCreate(void);
Description
Creates an empty set.
FcObjectSetAdd
Name
FcObjectSetAdd -- Add to an object set
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcObjectSetAdd(FcObjectSet *os, const char *object);
Description
Adds a property name to the set. Returns FcFalse if the property name
cannot be inserted into the set (due to allocation failure). Otherwise
returns FcTrue.
FcObjectSetDestroy
Name
FcObjectSetDestroy -- Destroy an object set
Synopsis
#include <fontconfig/fontconfig.h>
void FcObjectSetDestroy(FcObjectSet *os);
Description
Destroys an object set.
FcObjectSetBuild
Name
FcObjectSetBuild, FcObjectSetVaBuild, FcObjectSetVapBuild -- Build object
set from args
Synopsis
#include <fontconfig/fontconfig.h>
FcObjectSet * FcObjectSetBuild(const char *first, ...);
FcObjectSet * FcObjectSetVaBuild(const char *first, va_list va);
void FcObjectSetVapBuild(FcObjectSet *result, const char *first, va_list
va);
Description
These build an object set from a null-terminated list of property names.
FcObjectSetVapBuild is a macro version of FcObjectSetVaBuild which returns
the result in the result variable directly.
--------------------------------------------------------------------------
FreeType specific functions
Table of Contents
[45]FcFreeTypeCharIndex -- map Unicode to glyph id
[46]FcFreeTypeCharSet -- compute Unicode coverage
[47]FcFreeTypeCharSetAndSpacing -- compute Unicode coverage and spacing
type
[48]FcFreeTypeQuery -- compute pattern from font file (and index)
[49]FcFreeTypeQueryFace -- compute pattern from FT_Face
While the fontconfig library doesn't insist that FreeType be used as the
rasterization mechanism for fonts, it does provide some convenience
functions.
FcFreeTypeCharIndex
Name
FcFreeTypeCharIndex -- map Unicode to glyph id
Synopsis
#include <fontconfig.h>
#include <fcfreetype.h>
FT_UInt FcFreeTypeCharIndex(FT_Face face, FcChar32 ucs4);
Description
Maps a Unicode char to a glyph index. This function uses information from
several possible underlying encoding tables to work around broken fonts.
As a result, this function isn't designed to be used in performance
sensitive areas; results from this function are intended to be cached by
higher level functions.
FcFreeTypeCharSet
Name
FcFreeTypeCharSet -- compute Unicode coverage
Synopsis
#include <fontconfig.h>
#include <fcfreetype.h>
FcCharSet * FcFreeTypeCharSet(FT_Face face, FcBlanks *blanks);
Description
Scans a FreeType face and returns the set of encoded Unicode chars. This
scans several encoding tables to build as complete a list as possible. If
'blanks' is not 0, the glyphs in the font are examined and any blank
glyphs not in 'blanks' are not placed in the returned FcCharSet.
FcFreeTypeCharSetAndSpacing
Name
FcFreeTypeCharSetAndSpacing -- compute Unicode coverage and spacing type
Synopsis
#include <fontconfig.h>
#include <fcfreetype.h>
FcCharSet * FcFreeTypeCharSetAndSpacing(FT_Face face, FcBlanks *blanks,
int *spacing);
Description
Scans a FreeType face and returns the set of encoded Unicode chars. This
scans several encoding tables to build as complete a list as possible. If
'blanks' is not 0, the glyphs in the font are examined and any blank
glyphs not in 'blanks' are not placed in the returned FcCharSet. spacing
receives the computed spacing type of the font, one of FC_MONO for a font
where all glyphs have the same width, FC_DUAL, where the font has glyphs
in precisely two widths, one twice as wide as the other, or
FC_PROPORTIONAL where the font has glyphs of many widths.
FcFreeTypeQuery
Name
FcFreeTypeQuery -- compute pattern from font file (and index)
Synopsis
#include <fontconfig.h>
#include <fcfreetype.h>
FcPattern * FcFreeTypeQuery(const FcChar8 *file, int id, FcBlanks *blanks,
int *count);
Description
Constructs a pattern representing the 'id'th font in 'file'. The number of
fonts in 'file' is returned in 'count'.
FcFreeTypeQueryFace
Name
FcFreeTypeQueryFace -- compute pattern from FT_Face
Synopsis
#include <fontconfig.h>
#include <fcfreetype.h>
FcPattern * FcFreeTypeQueryFace(const FT_Face face, const FcChar8 *file,
int id, FcBlanks *blanks);
Description
Constructs a pattern representing 'face'. 'file' and 'id' are used solely
as data for pattern elements (FC_FILE, FC_INDEX and sometimes FC_FAMILY).
--------------------------------------------------------------------------
FcValue
Table of Contents
[50]FcValueDestroy -- Free a value
[51]FcValueSave -- Copy a value
[52]FcValuePrint -- Print a value to stdout
[53]FcValueEqual -- Test two values for equality
FcValue is a structure containing a type tag and a union of all possible
datatypes. The tag is an enum of type FcType and is intended to provide a
measure of run-time typechecking, although that depends on careful
programming.
FcValueDestroy
Name
FcValueDestroy -- Free a value
Synopsis
#include <fontconfig/fontconfig.h>
void FcValueDestroy(FcValue v);
Description
Frees any memory referenced by v. Values of type FcTypeString,
FcTypeMatrix and FcTypeCharSet reference memory, the other types do not.
FcValueSave
Name
FcValueSave -- Copy a value
Synopsis
#include <fontconfig/fontconfig.h>
FcValue FcValueSave(FcValue v);
Description
Returns a copy of v duplicating any object referenced by it so that v may
be safely destroyed without harming the new value.
FcValuePrint
Name
FcValuePrint -- Print a value to stdout
Synopsis
#include <fontconfig/fontconfig.h>
void FcValuePrint(FcValue v);
Description
Prints a human-readable representation of v to stdout. The format should
not be considered part of the library specification as it may change in
the future.
FcValueEqual
Name
FcValueEqual -- Test two values for equality
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcValueEqual(FcValue v_a, FcValue v_b);
Description
Compares two values. Integers and Doubles are compared as numbers;
otherwise the two values have to be the same type to be considered equal.
Strings are compared ignoring case.
--------------------------------------------------------------------------
FcCharSet
Table of Contents
[54]FcCharSetCreate -- Create an empty character set
[55]FcCharSetDestroy -- Destroy a character set
[56]FcCharSetAddChar -- Add a character to a charset
[57]FcCharSetDelChar -- Add a character to a charset
[58]FcCharSetCopy -- Copy a charset
[59]FcCharSetEqual -- Compare two charsets
[60]FcCharSetIntersect -- Intersect charsets
[61]FcCharSetUnion -- Add charsets
[62]FcCharSetSubtract -- Subtract charsets
[63]FcCharSetMerge -- Merge charsets
[64]FcCharSetHasChar -- Check a charset for a char
[65]FcCharSetCount -- Count entries in a charset
[66]FcCharSetIntersectCount -- Intersect and count charsets
[67]FcCharSetSubtractCount -- Subtract and count charsets
[68]FcCharSetIsSubset -- Test for charset inclusion
[69]FcCharSetFirstPage -- Start enumerating charset contents
[70]FcCharSetNextPage -- Continue enumerating charset contents
[71]FcCharSetCoverage -- DEPRECATED return coverage for a Unicode page
[72]FcCharSetNew -- DEPRECATED alias for FcCharSetCreate
An FcCharSet is a boolean array indicating a set of Unicode chars. Those
associated with a font are marked constant and cannot be edited.
FcCharSets may be reference counted internally to reduce memory
consumption; this may be visible to applications as the result of
FcCharSetCopy may return it's argument, and that CharSet may remain
unmodifiable.
FcCharSetCreate
Name
FcCharSetCreate -- Create an empty character set
Synopsis
#include <fontconfig/fontconfig.h>
FcCharSet * FcCharSetCreate(void);
Description
FcCharSetCreate allocates and initializes a new empty character set
object.
FcCharSetDestroy
Name
FcCharSetDestroy -- Destroy a character set
Synopsis
#include <fontconfig/fontconfig.h>
void FcCharSetDestroy(FcCharSet *fcs);
Description
FcCharSetDestroy decrements the reference count fcs. If the reference
count becomes zero, all memory referenced is freed.
FcCharSetAddChar
Name
FcCharSetAddChar -- Add a character to a charset
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcCharSetAddChar(FcCharSet *fcs, FcChar32 ucs4);
Description
FcCharSetAddChar adds a single Unicode char to the set, returning FcFalse
on failure, either as a result of a constant set or from running out of
memory.
FcCharSetDelChar
Name
FcCharSetDelChar -- Add a character to a charset
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcCharSetDelChar(FcCharSet *fcs, FcChar32 ucs4);
Description
FcCharSetDelChar deletes a single Unicode char from the set, returning
FcFalse on failure, either as a result of a constant set or from running
out of memory.
Update to fontconfig 2.11.1. Tested by shadchin@
2014-05-18 04:33:03 -06:00
Since
Import fontconfig 2.10.91 in a separate directory to make room for a BSD make build system.
2013-03-09 06:33:45 -07:00
Update to fontconfig 2.11.1. Tested by shadchin@
2014-05-18 04:33:03 -06:00
version 2.9.0
Import fontconfig 2.10.91 in a separate directory to make room for a BSD make build system.
2013-03-09 06:33:45 -07:00
FcCharSetCopy
Name
FcCharSetCopy -- Copy a charset
Synopsis
#include <fontconfig/fontconfig.h>
FcCharSet * FcCharSetCopy(FcCharSet *src);
Description
Makes a copy of src; note that this may not actually do anything more than
increment the reference count on src.
FcCharSetEqual
Name
FcCharSetEqual -- Compare two charsets
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcCharSetEqual(const FcCharSet *a, const FcCharSet *b);
Description
Returns whether a and b contain the same set of Unicode chars.
FcCharSetIntersect
Name
FcCharSetIntersect -- Intersect charsets
Synopsis
#include <fontconfig/fontconfig.h>
FcCharSet * FcCharSetIntersect(const FcCharSet *a, const FcCharSet *b);
Description
Returns a set including only those chars found in both a and b.
FcCharSetUnion
Name
FcCharSetUnion -- Add charsets
Synopsis
#include <fontconfig/fontconfig.h>
FcCharSet * FcCharSetUnion(const FcCharSet *a, const FcCharSet *b);
Description
Returns a set including only those chars found in either a or b.
FcCharSetSubtract
Name
FcCharSetSubtract -- Subtract charsets
Synopsis
#include <fontconfig/fontconfig.h>
FcCharSet * FcCharSetSubtract(const FcCharSet *a, const FcCharSet *b);
Description
Returns a set including only those chars found in a but not b.
FcCharSetMerge
Name
FcCharSetMerge -- Merge charsets
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcCharSetMerge(FcCharSet *a, const FcCharSet *b, FcBool *changed);
Description
Adds all chars in b to a. In other words, this is an in-place version of
FcCharSetUnion. If changed is not NULL, then it returns whether any new
chars from b were added to a. Returns FcFalse on failure, either when a is
a constant set or from running out of memory.
FcCharSetHasChar
Name
FcCharSetHasChar -- Check a charset for a char
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcCharSetHasChar(const FcCharSet *fcs, FcChar32 ucs4);
Description
Returns whether fcs contains the char ucs4.
FcCharSetCount
Name
FcCharSetCount -- Count entries in a charset
Synopsis
#include <fontconfig/fontconfig.h>
FcChar32 FcCharSetCount(const FcCharSet *a);
Description
Returns the total number of Unicode chars in a.
FcCharSetIntersectCount
Name
FcCharSetIntersectCount -- Intersect and count charsets
Synopsis
#include <fontconfig/fontconfig.h>
FcChar32 FcCharSetIntersectCount(const FcCharSet *a, const FcCharSet *b);
Description
Returns the number of chars that are in both a and b.
FcCharSetSubtractCount
Name
FcCharSetSubtractCount -- Subtract and count charsets
Synopsis
#include <fontconfig/fontconfig.h>
FcChar32 FcCharSetSubtractCount(const FcCharSet *a, const FcCharSet *b);
Description
Returns the number of chars that are in a but not in b.
FcCharSetIsSubset
Name
FcCharSetIsSubset -- Test for charset inclusion
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcCharSetIsSubset(const FcCharSet *a, const FcCharSet *b);
Description
Returns whether a is a subset of b.
FcCharSetFirstPage
Name
FcCharSetFirstPage -- Start enumerating charset contents
Synopsis
#include <fontconfig/fontconfig.h>
FcChar32 FcCharSetFirstPage(const FcCharSet *a,
FcChar32[FC_CHARSET_MAP_SIZE] map, FcChar32 *next);
Description
Update to fontconfig 2.11.1. Tested by shadchin@
2014-05-18 04:33:03 -06:00
Builds an array of bits in map marking the first page of Unicode coverage
of a. *next is set to contains the base code point for the next page in a.
Returns the base code point for the page, or FC_CHARSET_DONE if a contains
no pages. As an example, if FcCharSetFirstPage returns 0x300 and fills map
with
Import fontconfig 2.10.91 in a separate directory to make room for a BSD make build system.
2013-03-09 06:33:45 -07:00
Update to fontconfig 2.11.1. Tested by shadchin@
2014-05-18 04:33:03 -06:00
0xffffffff 0xffffffff 0x01000008 0x44300002 0xffffd7f0 0xfffffffb 0xffff7fff 0xffff0003
Import fontconfig 2.10.91 in a separate directory to make room for a BSD make build system.
2013-03-09 06:33:45 -07:00
Update to fontconfig 2.11.1. Tested by shadchin@
2014-05-18 04:33:03 -06:00
Then the page contains code points 0x300 through 0x33f (the first 64 code
points on the page) because map[0] and map[1] both have all their bits
set. It also contains code points 0x343 (0x300 + 32*2 + (4-1)) and 0x35e
(0x300 + 32*2 + (31-1)) because map[2] has the 4th and 31st bits set. The
code points represented by map[3] and later are left as an excercise for
the reader ;).
Import fontconfig 2.10.91 in a separate directory to make room for a BSD make build system.
2013-03-09 06:33:45 -07:00
FcCharSetNextPage
Name
FcCharSetNextPage -- Continue enumerating charset contents
Synopsis
#include <fontconfig/fontconfig.h>
FcChar32 FcCharSetNextPage(const FcCharSet *a,
FcChar32[FC_CHARSET_MAP_SIZE] map, FcChar32 *next);
Description
Update to fontconfig 2.11.1. Tested by shadchin@
2014-05-18 04:33:03 -06:00
Builds an array of bits in map marking the Unicode coverage of a for page
containing *next (see the FcCharSetFirstPage description for details).
*next is set to contains the base code point for the next page in a.
Returns the base of code point for the page, or FC_CHARSET_DONE if a does
not contain *next.
Import fontconfig 2.10.91 in a separate directory to make room for a BSD make build system.
2013-03-09 06:33:45 -07:00
FcCharSetCoverage
Name
FcCharSetCoverage -- DEPRECATED return coverage for a Unicode page
Synopsis
#include <fontconfig/fontconfig.h>
FcChar32 FcCharSetCoverage(const FcCharSet *a, FcChar32page,
FcChar32[8]result);
Description
DEPRECATED This function returns a bitmask in result which indicates which
code points in page are included in a. FcCharSetCoverage returns the next
page in the charset which has any coverage.
FcCharSetNew
Name
FcCharSetNew -- DEPRECATED alias for FcCharSetCreate
Synopsis
#include <fontconfig/fontconfig.h>
FcCharSet * FcCharSetNew(void);
Description
FcCharSetNew is a DEPRECATED alias for FcCharSetCreate.
--------------------------------------------------------------------------
FcLangSet
Table of Contents
[73]FcLangSetCreate -- create a langset object
[74]FcLangSetDestroy -- destroy a langset object
[75]FcLangSetCopy -- copy a langset object
[76]FcLangSetAdd -- add a language to a langset
[77]FcLangSetDel -- delete a language from a langset
[78]FcLangSetUnion -- Add langsets
[79]FcLangSetSubtract -- Subtract langsets
[80]FcLangSetCompare -- compare language sets
[81]FcLangSetContains -- check langset subset relation
[82]FcLangSetEqual -- test for matching langsets
[83]FcLangSetHash -- return a hash value for a langset
[84]FcLangSetHasLang -- test langset for language support
[85]FcGetDefaultLangs -- Get the default languages list
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[86]FcLangSetGetLangs -- get the list of languages in the langset
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[87]FcGetLangs -- Get list of languages
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[88]FcLangNormalize -- Normalize the language string
[89]FcLangGetCharSet -- Get character map for a language
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An FcLangSet is a set of language names (each of which include language
and an optional territory). They are used when selecting fonts to indicate
which languages the fonts need to support. Each font is marked, using
language orthography information built into fontconfig, with the set of
supported languages.
FcLangSetCreate
Name
FcLangSetCreate -- create a langset object
Synopsis
#include <fontconfig/fontconfig.h>
FcLangSet * FcLangSetCreate(void);
Description
FcLangSetCreate creates a new FcLangSet object.
FcLangSetDestroy
Name
FcLangSetDestroy -- destroy a langset object
Synopsis
#include <fontconfig/fontconfig.h>
void FcLangSetDestroy(FcLangSet *ls);
Description
FcLangSetDestroy destroys a FcLangSet object, freeing all memory
associated with it.
FcLangSetCopy
Name
FcLangSetCopy -- copy a langset object
Synopsis
#include <fontconfig/fontconfig.h>
FcLangSet * FcLangSetCopy(const FcLangSet *ls);
Description
FcLangSetCopy creates a new FcLangSet object and populates it with the
contents of ls.
FcLangSetAdd
Name
FcLangSetAdd -- add a language to a langset
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcLangSetAdd(FcLangSet *ls, const FcChar8 *lang);
Description
lang is added to ls. lang should be of the form Ll-Tt where Ll is a two or
three letter language from ISO 639 and Tt is a territory from ISO 3166.
FcLangSetDel
Name
FcLangSetDel -- delete a language from a langset
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcLangSetDel(FcLangSet *ls, const FcChar8 *lang);
Description
lang is removed from ls. lang should be of the form Ll-Tt where Ll is a
two or three letter language from ISO 639 and Tt is a territory from ISO
3166.
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Since
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version 2.9.0
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FcLangSetUnion
Name
FcLangSetUnion -- Add langsets
Synopsis
#include <fontconfig/fontconfig.h>
FcLangSet * FcLangSetUnion(const FcLangSet *ls_a, const FcLangSet *ls_b);
Description
Returns a set including only those languages found in either ls_a or ls_b.
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Since
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version 2.9.0
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FcLangSetSubtract
Name
FcLangSetSubtract -- Subtract langsets
Synopsis
#include <fontconfig/fontconfig.h>
FcLangSet * FcLangSetSubtract(const FcLangSet *ls_a, const FcLangSet
*ls_b);
Description
Returns a set including only those languages found in ls_a but not in
ls_b.
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Since
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version 2.9.0
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FcLangSetCompare
Name
FcLangSetCompare -- compare language sets
Synopsis
#include <fontconfig/fontconfig.h>
FcLangResult FcLangSetCompare(const FcLangSet *ls_a, const FcLangSet
*ls_b);
Description
FcLangSetCompare compares language coverage for ls_a and ls_b. If they
share any language and territory pair, this function returns FcLangEqual.
If they share a language but differ in which territory that language is
for, this function returns FcLangDifferentTerritory. If they share no
languages in common, this function returns FcLangDifferentLang.
FcLangSetContains
Name
FcLangSetContains -- check langset subset relation
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcLangSetContains(const FcLangSet *ls_a, const FcLangSet *ls_b);
Description
FcLangSetContains returns FcTrue if ls_a contains every language in ls_b.
ls_a will 'contain' a language from ls_b if ls_a has exactly the language,
or either the language or ls_a has no territory.
FcLangSetEqual
Name
FcLangSetEqual -- test for matching langsets
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcLangSetEqual(const FcLangSet *ls_a, const FcLangSet *ls_b);
Description
Returns FcTrue if and only if ls_a supports precisely the same language
and territory combinations as ls_b.
FcLangSetHash
Name
FcLangSetHash -- return a hash value for a langset
Synopsis
#include <fontconfig/fontconfig.h>
FcChar32 FcLangSetHash(const FcLangSet *ls);
Description
This function returns a value which depends solely on the languages
supported by ls. Any language which equals ls will have the same result
from FcLangSetHash. However, two langsets with the same hash value may not
be equal.
FcLangSetHasLang
Name
FcLangSetHasLang -- test langset for language support
Synopsis
#include <fontconfig/fontconfig.h>
FcLangResult FcLangSetHasLang(const FcLangSet *ls, const FcChar8 *lang);
Description
FcLangSetHasLang checks whether ls supports lang. If ls has a matching
language and territory pair, this function returns FcLangEqual. If ls has
a matching language but differs in which territory that language is for,
this function returns FcLangDifferentTerritory. If ls has no matching
language, this function returns FcLangDifferentLang.
FcGetDefaultLangs
Name
FcGetDefaultLangs -- Get the default languages list
Synopsis
#include <fontconfig/fontconfig.h>
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FcStrSet * FcGetDefaultLangs(void);
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Description
Returns a string set of the default languages according to the environment
variables on the system. This function looks for them in order of FC_LANG,
LC_ALL, LC_CTYPE and LANG then. If there are no valid values in those
environment variables, "en" will be set as fallback.
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Since
version 2.9.91
FcLangSetGetLangs
Name
FcLangSetGetLangs -- get the list of languages in the langset
Synopsis
#include <fontconfig/fontconfig.h>
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FcStrSet * FcLangSetGetLangs(const FcLangSet *ls);
Description
Returns a string set of all languages in langset.
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FcGetLangs
Name
FcGetLangs -- Get list of languages
Synopsis
#include <fontconfig/fontconfig.h>
FcStrSet * FcGetLangs(void);
Description
Returns a string set of all known languages.
FcLangNormalize
Name
FcLangNormalize -- Normalize the language string
Synopsis
#include <fontconfig/fontconfig.h>
FcChar8 * FcLangNormalize(const FcChar8 *lang);
Description
Returns a string to make lang suitable on fontconfig.
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Since
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version 2.10.91
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FcLangGetCharSet
Name
FcLangGetCharSet -- Get character map for a language
Synopsis
#include <fontconfig/fontconfig.h>
const FcCharSet * FcLangGetCharSet(const FcChar8 *lang);
Description
Returns the FcCharMap for a language.
--------------------------------------------------------------------------
FcMatrix
Table of Contents
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[90]FcMatrixInit -- initialize an FcMatrix structure
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[91]FcMatrixCopy -- Copy a matrix
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[92]FcMatrixEqual -- Compare two matrices
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[93]FcMatrixMultiply -- Multiply matrices
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[94]FcMatrixRotate -- Rotate a matrix
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[95]FcMatrixScale -- Scale a matrix
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[96]FcMatrixShear -- Shear a matrix
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FcMatrix structures hold an affine transformation in matrix form.
FcMatrixInit
Name
FcMatrixInit -- initialize an FcMatrix structure
Synopsis
#include <fontconfig/fontconfig.h>
void FcMatrixInit(FcMatrix *matrix);
Description
FcMatrixInit initializes matrix to the identity matrix.
FcMatrixCopy
Name
FcMatrixCopy -- Copy a matrix
Synopsis
#include <fontconfig/fontconfig.h>
void FcMatrixCopy(const FcMatrix *matrix);
Description
FcMatrixCopy allocates a new FcMatrix and copies mat into it.
FcMatrixEqual
Name
FcMatrixEqual -- Compare two matrices
Synopsis
#include <fontconfig/fontconfig.h>
void FcMatrixEqual(const FcMatrix *matrix1, const FcMatrix *matrix2);
Description
FcMatrixEqual compares matrix1 and matrix2 returning FcTrue when they are
equal and FcFalse when they are not.
FcMatrixMultiply
Name
FcMatrixMultiply -- Multiply matrices
Synopsis
#include <fontconfig/fontconfig.h>
void FcMatrixMultiply(FcMatrix *result, const FcMatrix *matrix1, const
FcMatrix *matrix2);
Description
FcMatrixMultiply multiplies matrix1 and matrix2 storing the result in
result.
FcMatrixRotate
Name
FcMatrixRotate -- Rotate a matrix
Synopsis
#include <fontconfig/fontconfig.h>
void FcMatrixRotate(FcMatrix *matrix, double cos, double sin);
Description
FcMatrixRotate rotates matrix by the angle who's sine is sin and cosine is
cos. This is done by multiplying by the matrix:
cos -sin
sin cos
FcMatrixScale
Name
FcMatrixScale -- Scale a matrix
Synopsis
#include <fontconfig/fontconfig.h>
void FcMatrixScale(FcMatrix *matrix, double sx, double dy);
Description
FcMatrixScale multiplies matrix x values by sx and y values by dy. This is
done by multiplying by the matrix:
sx 0
0 dy
FcMatrixShear
Name
FcMatrixShear -- Shear a matrix
Synopsis
#include <fontconfig/fontconfig.h>
void FcMatrixShear(FcMatrix *matrix, double sh, double sv);
Description
FcMatrixShare shears matrix horizontally by sh and vertically by sv. This
is done by multiplying by the matrix:
1 sh
sv 1
--------------------------------------------------------------------------
FcConfig
Table of Contents
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[97]FcConfigCreate -- Create a configuration
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[98]FcConfigReference -- Increment config reference count
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[99]FcConfigDestroy -- Destroy a configuration
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[100]FcConfigSetCurrent -- Set configuration as default
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[101]FcConfigGetCurrent -- Return current configuration
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[102]FcConfigUptoDate -- Check timestamps on config files
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[103]FcConfigHome -- return the current home directory.
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[104]FcConfigEnableHome -- controls use of the home directory.
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[105]FcConfigBuildFonts -- Build font database
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[106]FcConfigGetConfigDirs -- Get config directories
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[107]FcConfigGetFontDirs -- Get font directories
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[108]FcConfigGetConfigFiles -- Get config files
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[109]FcConfigGetCache -- DEPRECATED used to return per-user cache filename
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[110]FcConfigGetCacheDirs -- return the list of directories searched for
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cache files
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[111]FcConfigGetFonts -- Get config font set
[112]FcConfigGetBlanks -- Get config blanks
[113]FcConfigGetRescanInterval -- Get config rescan interval
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[114]FcConfigSetRescanInterval -- Set config rescan interval
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[115]FcConfigAppFontAddFile -- Add font file to font database
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[116]FcConfigAppFontAddDir -- Add fonts from directory to font database
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[117]FcConfigAppFontClear -- Remove all app fonts from font database
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[118]FcConfigSubstituteWithPat -- Execute substitutions
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[119]FcConfigSubstitute -- Execute substitutions
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[120]FcFontMatch -- Return best font
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[121]FcFontSort -- Return list of matching fonts
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[122]FcFontRenderPrepare -- Prepare pattern for loading font file
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[123]FcFontList -- List fonts
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[124]FcConfigFilename -- Find a config file
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[125]FcConfigParseAndLoad -- load a configuration file
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[126]FcConfigGetSysRoot -- Obtain the system root directory
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[127]FcConfigSetSysRoot -- Set the system root directory
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An FcConfig object holds the internal representation of a configuration.
There is a default configuration which applications may use by passing 0
to any function using the data within an FcConfig.
FcConfigCreate
Name
FcConfigCreate -- Create a configuration
Synopsis
#include <fontconfig/fontconfig.h>
FcConfig * FcConfigCreate(void);
Description
Creates an empty configuration.
FcConfigReference
Name
FcConfigReference -- Increment config reference count
Synopsis
#include <fontconfig/fontconfig.h>
FcConfig * FcConfigReference(FcConfig *config);
Description
Add another reference to config. Configs are freed only when the reference
count reaches zero. If config is NULL, the current configuration is used.
In that case this function will be similar to FcConfigGetCurrent() except
that it increments the reference count before returning and the user is
responsible for destroying the configuration when not needed anymore.
FcConfigDestroy
Name
FcConfigDestroy -- Destroy a configuration
Synopsis
#include <fontconfig/fontconfig.h>
void FcConfigDestroy(FcConfig *config);
Description
Decrements the config reference count. If all references are gone,
destroys the configuration and any data associated with it. Note that
calling this function with the return from FcConfigGetCurrent will cause a
new configuration to be created for use as current configuration.
FcConfigSetCurrent
Name
FcConfigSetCurrent -- Set configuration as default
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcConfigSetCurrent(FcConfig *config);
Description
Sets the current default configuration to config. Implicitly calls
FcConfigBuildFonts if necessary, returning FcFalse if that call fails.
FcConfigGetCurrent
Name
FcConfigGetCurrent -- Return current configuration
Synopsis
#include <fontconfig/fontconfig.h>
FcConfig * FcConfigGetCurrent(void);
Description
Returns the current default configuration.
FcConfigUptoDate
Name
FcConfigUptoDate -- Check timestamps on config files
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcConfigUptoDate(FcConfig *config);
Description
Checks all of the files related to config and returns whether any of them
has been modified since the configuration was created. If config is NULL,
the current configuration is used.
FcConfigHome
Name
FcConfigHome -- return the current home directory.
Synopsis
#include <fontconfig/fontconfig.h>
FcChar8 * FcConfigHome(void);
Description
Return the current user's home directory, if it is available, and if using
it is enabled, and NULL otherwise. See also FcConfigEnableHome).
FcConfigEnableHome
Name
FcConfigEnableHome -- controls use of the home directory.
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcConfigEnableHome(FcBool enable);
Description
If enable is FcTrue, then Fontconfig will use various files which are
specified relative to the user's home directory (using the ~ notation in
the configuration). When enable is FcFalse, then all use of the home
directory in these contexts will be disabled. The previous setting of the
value is returned.
FcConfigBuildFonts
Name
FcConfigBuildFonts -- Build font database
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcConfigBuildFonts(FcConfig *config);
Description
Builds the set of available fonts for the given configuration. Note that
any changes to the configuration after this call have indeterminate
effects. Returns FcFalse if this operation runs out of memory. If config
is NULL, the current configuration is used.
FcConfigGetConfigDirs
Name
FcConfigGetConfigDirs -- Get config directories
Synopsis
#include <fontconfig/fontconfig.h>
FcStrList * FcConfigGetConfigDirs(FcConfig *config);
Description
Returns the list of font directories specified in the configuration files
for config. Does not include any subdirectories. If config is NULL, the
current configuration is used.
FcConfigGetFontDirs
Name
FcConfigGetFontDirs -- Get font directories
Synopsis
#include <fontconfig/fontconfig.h>
FcStrList * FcConfigGetFontDirs(FcConfig *config);
Description
Returns the list of font directories in config. This includes the
configured font directories along with any directories below those in the
filesystem. If config is NULL, the current configuration is used.
FcConfigGetConfigFiles
Name
FcConfigGetConfigFiles -- Get config files
Synopsis
#include <fontconfig/fontconfig.h>
FcStrList * FcConfigGetConfigFiles(FcConfig *config);
Description
Returns the list of known configuration files used to generate config. If
config is NULL, the current configuration is used.
FcConfigGetCache
Name
FcConfigGetCache -- DEPRECATED used to return per-user cache filename
Synopsis
#include <fontconfig/fontconfig.h>
FcChar8 * FcConfigGetCache(FcConfig *config);
Description
With fontconfig no longer using per-user cache files, this function now
simply returns NULL to indicate that no per-user file exists.
FcConfigGetCacheDirs
Name
FcConfigGetCacheDirs -- return the list of directories searched for cache
files
Synopsis
#include <fontconfig/fontconfig.h>
FcStrList * FcConfigGetCacheDirs(const FcConfig *config);
Description
FcConfigGetCacheDirs returns a string list containing all of the
directories that fontconfig will search when attempting to load a cache
file for a font directory. If config is NULL, the current configuration is
used.
FcConfigGetFonts
Name
FcConfigGetFonts -- Get config font set
Synopsis
#include <fontconfig/fontconfig.h>
FcFontSet * FcConfigGetFonts(FcConfig *config, FcSetName set);
Description
Returns one of the two sets of fonts from the configuration as specified
by set. This font set is owned by the library and must not be modified or
freed. If config is NULL, the current configuration is used.
FcConfigGetBlanks
Name
FcConfigGetBlanks -- Get config blanks
Synopsis
#include <fontconfig/fontconfig.h>
FcBlanks * FcConfigGetBlanks(FcConfig *config);
Description
Returns the FcBlanks object associated with the given configuration, if no
blanks were present in the configuration, this function will return 0. The
returned FcBlanks object if not NULL, is valid as long as the owning
FcConfig is alive. If config is NULL, the current configuration is used.
FcConfigGetRescanInterval
Name
FcConfigGetRescanInterval -- Get config rescan interval
Synopsis
#include <fontconfig/fontconfig.h>
int FcConfigGetRescanInterval(FcConfig *config);
Description
Returns the interval between automatic checks of the configuration (in
seconds) specified in config. The configuration is checked during a call
to FcFontList when this interval has passed since the last check. An
interval setting of zero disables automatic checks. If config is NULL, the
current configuration is used.
FcConfigSetRescanInterval
Name
FcConfigSetRescanInterval -- Set config rescan interval
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcConfigSetRescanInterval(FcConfig *config, int rescanInterval);
Description
Sets the rescan interval. Returns FcFalse if the interval cannot be set
(due to allocation failure). Otherwise returns FcTrue. An interval setting
of zero disables automatic checks. If config is NULL, the current
configuration is used.
FcConfigAppFontAddFile
Name
FcConfigAppFontAddFile -- Add font file to font database
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcConfigAppFontAddFile(FcConfig *config, const FcChar8 *file);
Description
Adds an application-specific font to the configuration. Returns FcFalse if
the fonts cannot be added (due to allocation failure). Otherwise returns
FcTrue. If config is NULL, the current configuration is used.
FcConfigAppFontAddDir
Name
FcConfigAppFontAddDir -- Add fonts from directory to font database
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcConfigAppFontAddDir(FcConfig *config, const FcChar8 *dir);
Description
Scans the specified directory for fonts, adding each one found to the
application-specific set of fonts. Returns FcFalse if the fonts cannot be
added (due to allocation failure). Otherwise returns FcTrue. If config is
NULL, the current configuration is used.
FcConfigAppFontClear
Name
FcConfigAppFontClear -- Remove all app fonts from font database
Synopsis
#include <fontconfig/fontconfig.h>
void FcConfigAppFontClear(FcConfig *config);
Description
Clears the set of application-specific fonts. If config is NULL, the
current configuration is used.
FcConfigSubstituteWithPat
Name
FcConfigSubstituteWithPat -- Execute substitutions
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcConfigSubstituteWithPat(FcConfig *config, FcPattern *p, FcPattern
*p_pat, FcMatchKind kind);
Description
Performs the sequence of pattern modification operations, if kind is
FcMatchPattern, then those tagged as pattern operations are applied, else
if kind is FcMatchFont, those tagged as font operations are applied and
p_pat is used for <test> elements with target=pattern. Returns FcFalse if
the substitution cannot be performed (due to allocation failure).
Otherwise returns FcTrue. If config is NULL, the current configuration is
used.
FcConfigSubstitute
Name
FcConfigSubstitute -- Execute substitutions
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcConfigSubstitute(FcConfig *config, FcPattern *p, FcMatchKind
kind);
Description
Calls FcConfigSubstituteWithPat setting p_pat to NULL. Returns FcFalse if
the substitution cannot be performed (due to allocation failure).
Otherwise returns FcTrue. If config is NULL, the current configuration is
used.
FcFontMatch
Name
FcFontMatch -- Return best font
Synopsis
#include <fontconfig/fontconfig.h>
FcPattern * FcFontMatch(FcConfig *config, FcPattern *p, FcResult *result);
Description
Finds the font in sets most closely matching pattern and returns the
result of FcFontRenderPrepare for that font and the provided pattern. This
function should be called only after FcConfigSubstitute and
FcDefaultSubstitute have been called for p; otherwise the results will not
be correct. If config is NULL, the current configuration is used.
FcFontSort
Name
FcFontSort -- Return list of matching fonts
Synopsis
#include <fontconfig/fontconfig.h>
FcFontSet * FcFontSort(FcConfig *config, FcPattern *p, FcBool trim,
FcCharSet **csp, FcResult *result);
Description
Returns the list of fonts sorted by closeness to p. If trim is FcTrue,
elements in the list which don't include Unicode coverage not provided by
earlier elements in the list are elided. The union of Unicode coverage of
all of the fonts is returned in csp, if csp is not NULL. This function
should be called only after FcConfigSubstitute and FcDefaultSubstitute
have been called for p; otherwise the results will not be correct.
The returned FcFontSet references FcPattern structures which may be shared
by the return value from multiple FcFontSort calls, applications must not
modify these patterns. Instead, they should be passed, along with p to
FcFontRenderPrepare which combines them into a complete pattern.
The FcFontSet returned by FcFontSort is destroyed by calling
FcFontSetDestroy. If config is NULL, the current configuration is used.
FcFontRenderPrepare
Name
FcFontRenderPrepare -- Prepare pattern for loading font file
Synopsis
#include <fontconfig/fontconfig.h>
FcPattern * FcFontRenderPrepare(FcConfig *config, FcPattern *pat,
FcPattern *font);
Description
Creates a new pattern consisting of elements of font not appearing in pat,
elements of pat not appearing in font and the best matching value from pat
for elements appearing in both. The result is passed to
FcConfigSubstituteWithPat with kind FcMatchFont and then returned.
FcFontList
Name
FcFontList -- List fonts
Synopsis
#include <fontconfig/fontconfig.h>
FcFontSet * FcFontList(FcConfig *config, FcPattern *p, FcObjectSet *os);
Description
Selects fonts matching p, creates patterns from those fonts containing
only the objects in os and returns the set of unique such patterns. If
config is NULL, the default configuration is checked to be up to date, and
used.
FcConfigFilename
Name
FcConfigFilename -- Find a config file
Synopsis
#include <fontconfig/fontconfig.h>
FcChar8 * FcConfigFilename(const FcChar8 *name);
Description
Given the specified external entity name, return the associated filename.
This provides applications a way to convert various configuration file
references into filename form.
A null or empty name indicates that the default configuration file should
be used; which file this references can be overridden with the
FONTCONFIG_FILE environment variable. Next, if the name starts with ~, it
refers to a file in the current users home directory. Otherwise if the
name doesn't start with '/', it refers to a file in the default
configuration directory; the built-in default directory can be overridden
with the FONTCONFIG_PATH environment variable.
FcConfigParseAndLoad
Name
FcConfigParseAndLoad -- load a configuration file
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcConfigParseAndLoad(FcConfig *config, const FcChar8 *file, FcBool
complain);
Description
Walks the configuration in 'file' and constructs the internal
representation in 'config'. Any include files referenced from within
'file' will be loaded and parsed. If 'complain' is FcFalse, no warning
will be displayed if 'file' does not exist. Error and warning messages
will be output to stderr. Returns FcFalse if some error occurred while
loading the file, either a parse error, semantic error or allocation
failure. Otherwise returns FcTrue.
Update to fontconfig 2.11.1. Tested by shadchin@
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FcConfigGetSysRoot
Name
FcConfigGetSysRoot -- Obtain the system root directory
Synopsis
#include <fontconfig/fontconfig.h>
const FcChar8 * FcConfigGetSysRoot(const FcConfig *config);
Description
Obtrains the system root directory in 'config' if available.
Since
version 2.10.92
FcConfigSetSysRoot
Name
FcConfigSetSysRoot -- Set the system root directory
Synopsis
#include <fontconfig/fontconfig.h>
void FcConfigSetSysRoot(FcConfig *config, const FcChar8 *sysroot);
Description
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Update to fontconfig 2.11.1. Tested by shadchin@
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Set 'sysroot' as the system root directory. fontconfig prepend 'sysroot'
to the cache directories in order to allow people to generate caches at
the build time. Note that this causes changing current config. i.e. this
function calls FcConfigSetCurrent() internally.
Since
version 2.10.92
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--------------------------------------------------------------------------
FcObjectType
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[128]FcNameRegisterObjectTypes -- Register object types
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[129]FcNameUnregisterObjectTypes -- Unregister object types
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[130]FcNameGetObjectType -- Lookup an object type
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Provides for application-specified font name object types so that new
pattern elements can be generated from font names.
FcNameRegisterObjectTypes
Name
FcNameRegisterObjectTypes -- Register object types
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcNameRegisterObjectTypes(const FcObjectType *types, int ntype);
Description
Deprecated. Does nothing. Returns FcFalse.
FcNameUnregisterObjectTypes
Name
FcNameUnregisterObjectTypes -- Unregister object types
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcNameUnregisterObjectTypes(const FcObjectType *types, int ntype);
Description
Deprecated. Does nothing. Returns FcFalse.
FcNameGetObjectType
Name
FcNameGetObjectType -- Lookup an object type
Synopsis
#include <fontconfig/fontconfig.h>
const FcObjectType * FcNameGetObjectType(const char *object);
Description
Return the object type for the pattern element named object.
--------------------------------------------------------------------------
FcConstant
Table of Contents
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[131]FcNameRegisterConstants -- Register symbolic constants
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[132]FcNameUnregisterConstants -- Unregister symbolic constants
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[133]FcNameGetConstant -- Lookup symbolic constant
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[134]FcNameConstant -- Get the value for a symbolic constant
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Provides for application-specified symbolic constants for font names.
FcNameRegisterConstants
Name
FcNameRegisterConstants -- Register symbolic constants
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcNameRegisterConstants(const FcConstant *consts, int nconsts);
Description
Deprecated. Does nothing. Returns FcFalse.
FcNameUnregisterConstants
Name
FcNameUnregisterConstants -- Unregister symbolic constants
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcNameUnregisterConstants(const FcConstant *consts, int nconsts);
Description
Deprecated. Does nothing. Returns FcFalse.
FcNameGetConstant
Name
FcNameGetConstant -- Lookup symbolic constant
Synopsis
#include <fontconfig/fontconfig.h>
const FcConstant * FcNameGetConstant(FcChar8 *string);
Description
Return the FcConstant structure related to symbolic constant string.
FcNameConstant
Name
FcNameConstant -- Get the value for a symbolic constant
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcNameConstant(FcChar8 *string, int *result);
Description
Returns whether a symbolic constant with name string is registered,
placing the value of the constant in result if present.
--------------------------------------------------------------------------
FcBlanks
Table of Contents
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[135]FcBlanksCreate -- Create an FcBlanks
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[136]FcBlanksDestroy -- Destroy and FcBlanks
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[137]FcBlanksAdd -- Add a character to an FcBlanks
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[138]FcBlanksIsMember -- Query membership in an FcBlanks
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An FcBlanks object holds a list of Unicode chars which are expected to be
blank when drawn. When scanning new fonts, any glyphs which are empty and
not in this list will be assumed to be broken and not placed in the
FcCharSet associated with the font. This provides a significantly more
accurate CharSet for applications.
FcBlanksCreate
Name
FcBlanksCreate -- Create an FcBlanks
Synopsis
#include <fontconfig/fontconfig.h>
FcBlanks * FcBlanksCreate(void);
Description
Creates an empty FcBlanks object.
FcBlanksDestroy
Name
FcBlanksDestroy -- Destroy and FcBlanks
Synopsis
#include <fontconfig/fontconfig.h>
void FcBlanksDestroy(FcBlanks *b);
Description
Destroys an FcBlanks object, freeing any associated memory.
FcBlanksAdd
Name
FcBlanksAdd -- Add a character to an FcBlanks
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcBlanksAdd(FcBlanks *b, FcChar32 ucs4);
Description
Adds a single character to an FcBlanks object, returning FcFalse if this
process ran out of memory.
FcBlanksIsMember
Name
FcBlanksIsMember -- Query membership in an FcBlanks
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcBlanksIsMember(FcBlanks *b, FcChar32 ucs4);
Description
Returns whether the specified FcBlanks object contains the indicated
Unicode value.
--------------------------------------------------------------------------
FcAtomic
Table of Contents
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[139]FcAtomicCreate -- create an FcAtomic object
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[140]FcAtomicLock -- lock a file
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[141]FcAtomicNewFile -- return new temporary file name
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Update to fontconfig 2.11.1. Tested by shadchin@
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[142]FcAtomicOrigFile -- return original file name
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Update to fontconfig 2.11.1. Tested by shadchin@
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[143]FcAtomicReplaceOrig -- replace original with new
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Update to fontconfig 2.11.1. Tested by shadchin@
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[144]FcAtomicDeleteNew -- delete new file
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[145]FcAtomicUnlock -- unlock a file
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[146]FcAtomicDestroy -- destroy an FcAtomic object
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These functions provide a safe way to update configuration files, allowing
ongoing reading of the old configuration file while locked for writing and
ensuring that a consistent and complete version of the configuration file
is always available.
FcAtomicCreate
Name
FcAtomicCreate -- create an FcAtomic object
Synopsis
#include <fontconfig/fontconfig.h>
FcAtomic * FcAtomicCreate(const FcChar8 *file);
Description
Creates a data structure containing data needed to control access to file.
Writing is done to a separate file. Once that file is complete, the
original configuration file is atomically replaced so that reading process
always see a consistent and complete file without the need to lock for
reading.
FcAtomicLock
Name
FcAtomicLock -- lock a file
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcAtomicLock(FcAtomic *atomic);
Description
Attempts to lock the file referenced by atomic. Returns FcFalse if the
file is already locked, else returns FcTrue and leaves the file locked.
FcAtomicNewFile
Name
FcAtomicNewFile -- return new temporary file name
Synopsis
#include <fontconfig/fontconfig.h>
FcChar8 * FcAtomicNewFile(FcAtomic *atomic);
Description
Returns the filename for writing a new version of the file referenced by
atomic.
FcAtomicOrigFile
Name
FcAtomicOrigFile -- return original file name
Synopsis
#include <fontconfig/fontconfig.h>
FcChar8 * FcAtomicOrigFile(FcAtomic *atomic);
Description
Returns the file referenced by atomic.
FcAtomicReplaceOrig
Name
FcAtomicReplaceOrig -- replace original with new
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcAtomicReplaceOrig(FcAtomic *atomic);
Description
Replaces the original file referenced by atomic with the new file. Returns
FcFalse if the file cannot be replaced due to permission issues in the
filesystem. Otherwise returns FcTrue.
FcAtomicDeleteNew
Name
FcAtomicDeleteNew -- delete new file
Synopsis
#include <fontconfig/fontconfig.h>
void FcAtomicDeleteNew(FcAtomic *atomic);
Description
Deletes the new file. Used in error recovery to back out changes.
FcAtomicUnlock
Name
FcAtomicUnlock -- unlock a file
Synopsis
#include <fontconfig/fontconfig.h>
void FcAtomicUnlock(FcAtomic *atomic);
Description
Unlocks the file.
FcAtomicDestroy
Name
FcAtomicDestroy -- destroy an FcAtomic object
Synopsis
#include <fontconfig/fontconfig.h>
void FcAtomicDestroy(FcAtomic *atomic);
Description
Destroys atomic.
--------------------------------------------------------------------------
File and Directory routines
Table of Contents
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[147]FcFileScan -- scan a font file
[148]FcFileIsDir -- check whether a file is a directory
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[149]FcDirScan -- scan a font directory without caching it
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[150]FcDirSave -- DEPRECATED: formerly used to save a directory cache
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[151]FcDirCacheUnlink -- Remove all caches related to dir
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[152]FcDirCacheValid -- check directory cache
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[153]FcDirCacheLoad -- load a directory cache
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[154]FcDirCacheRescan -- Re-scan a directory cache
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[155]FcDirCacheRead -- read or construct a directory cache
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[156]FcDirCacheLoadFile -- load a cache file
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[157]FcDirCacheUnload -- unload a cache file
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These routines work with font files and directories, including font
directory cache files.
FcFileScan
Name
FcFileScan -- scan a font file
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcFileScan(FcFontSet *set, FcStrSet *dirs, FcFileCache *cache,
FcBlanks *blanks, const FcChar8 *file, FcBool force);
Description
Scans a single file and adds all fonts found to set. If force is FcTrue,
then the file is scanned even if associated information is found in cache.
If file is a directory, it is added to dirs. Whether fonts are found
depends on fontconfig policy as well as the current configuration.
Internally, fontconfig will ignore BDF and PCF fonts which are not in
Unicode (or the effectively equivalent ISO Latin-1) encoding as those are
not usable by Unicode-based applications. The configuration can ignore
fonts based on filename or contents of the font file itself. Returns
FcFalse if any of the fonts cannot be added (due to allocation failure).
Otherwise returns FcTrue.
FcFileIsDir
Name
FcFileIsDir -- check whether a file is a directory
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcFileIsDir(const FcChar8 *file);
Description
Returns FcTrue if file is a directory, otherwise returns FcFalse.
FcDirScan
Name
FcDirScan -- scan a font directory without caching it
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcDirScan(FcFontSet *set, FcStrSet *dirs, FcFileCache *cache,
FcBlanks *blanks, const FcChar8 *dir, FcBool force);
Description
If cache is not zero or if force is FcFalse, this function currently
returns FcFalse. Otherwise, it scans an entire directory and adds all
fonts found to set. Any subdirectories found are added to dirs. Calling
this function does not create any cache files. Use FcDirCacheRead() if
caching is desired.
FcDirSave
Name
FcDirSave -- DEPRECATED: formerly used to save a directory cache
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcDirSave(FcFontSet *set, FcStrSet *dirs, const FcChar8 *dir);
Description
This function now does nothing aside from returning FcFalse. It used to
creates the per-directory cache file for dir and populates it with the
fonts in set and subdirectories in dirs. All of this functionality is now
automatically managed by FcDirCacheLoad and FcDirCacheRead.
FcDirCacheUnlink
Name
FcDirCacheUnlink -- Remove all caches related to dir
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcDirCacheUnlink(const FcChar8 *dir, FcConfig *config);
Description
Scans the cache directories in config, removing any instances of the cache
file for dir. Returns FcFalse when some internal error occurs (out of
memory, etc). Errors actually unlinking any files are ignored.
FcDirCacheValid
Name
FcDirCacheValid -- check directory cache
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcDirCacheValid(const FcChar8 *dir);
Description
Returns FcTrue if dir has an associated valid cache file, else returns
FcFalse
FcDirCacheLoad
Name
FcDirCacheLoad -- load a directory cache
Synopsis
#include <fontconfig/fontconfig.h>
FcCache * FcDirCacheLoad(const FcChar8 *dir, FcConfig *config, FcChar8
**cache_file);
Description
Loads the cache related to dir. If no cache file exists, returns NULL. The
name of the cache file is returned in cache_file, unless that is NULL. See
also FcDirCacheRead.
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FcDirCacheRescan
Name
FcDirCacheRescan -- Re-scan a directory cache
Synopsis
#include <fontconfig/fontconfig.h>
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FcCache * FcDirCacheRescan(const FcChar8 *dir, FcConfig *config);
Description
Re-scan directories only at dir and update the cache. returns NULL if
failed.
Since
version 2.11.1
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FcDirCacheRead
Name
FcDirCacheRead -- read or construct a directory cache
Synopsis
#include <fontconfig/fontconfig.h>
FcCache * FcDirCacheRead(const FcChar8 *dir, FcBool force, FcConfig
*config);
Description
This returns a cache for dir. If force is FcFalse, then an existing, valid
cache file will be used. Otherwise, a new cache will be created by
scanning the directory and that returned.
FcDirCacheLoadFile
Name
FcDirCacheLoadFile -- load a cache file
Synopsis
#include <fontconfig/fontconfig.h>
FcCache * FcDirCacheLoadFile(const FcChar8 *cache_file, struct stat
*file_stat);
Description
This function loads a directory cache from cache_file. If file_stat is
non-NULL, it will be filled with the results of stat(2) on the cache file.
FcDirCacheUnload
Name
FcDirCacheUnload -- unload a cache file
Synopsis
#include <fontconfig/fontconfig.h>
void FcDirCacheUnload(FcCache *cache);
Description
This function dereferences cache. When no other references to it remain,
all memory associated with the cache will be freed.
--------------------------------------------------------------------------
FcCache routines
Table of Contents
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[158]FcCacheDir -- Return directory of cache
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[159]FcCacheCopySet -- Returns a copy of the fontset from cache
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[160]FcCacheSubdir -- Return the i'th subdirectory.
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[161]FcCacheNumSubdir -- Return the number of subdirectories in cache.
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[162]FcCacheNumFont -- Returns the number of fonts in cache.
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[163]FcDirCacheClean -- This tries to clean up the cache directory of
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cache_dir. This returns FcTrue if the operation is successfully complete.
otherwise FcFalse.
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[164]FcCacheCreateTagFile -- Create CACHEDIR.TAG at cache directory.
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These routines work with font directory caches, accessing their contents
in limited ways. It is not expected that normal applications will need to
use these functions.
FcCacheDir
Name
FcCacheDir -- Return directory of cache
Synopsis
#include <fontconfig/fontconfig.h>
const FcChar8 * FcCacheDir(const FcCache *cache);
Description
This function returns the directory from which the cache was constructed.
FcCacheCopySet
Name
FcCacheCopySet -- Returns a copy of the fontset from cache
Synopsis
#include <fontconfig/fontconfig.h>
FcFontSet * FcCacheCopySet(const FcCache *cache);
Description
The returned fontset contains each of the font patterns from cache. This
fontset may be modified, but the patterns from the cache are read-only.
FcCacheSubdir
Name
FcCacheSubdir -- Return the i'th subdirectory.
Synopsis
#include <fontconfig/fontconfig.h>
const FcChar8 * FcCacheSubdir(const FcCache *cache, inti);
Description
The set of subdirectories stored in a cache file are indexed by this
function, i should range from 0 to n-1, where n is the return value from
FcCacheNumSubdir.
FcCacheNumSubdir
Name
FcCacheNumSubdir -- Return the number of subdirectories in cache.
Synopsis
#include <fontconfig/fontconfig.h>
int FcCacheNumSubdir(const FcCache *cache);
Description
This returns the total number of subdirectories in the cache.
FcCacheNumFont
Name
FcCacheNumFont -- Returns the number of fonts in cache.
Synopsis
#include <fontconfig/fontconfig.h>
int FcCacheNumFont(const FcCache *cache);
Description
This returns the number of fonts which would be included in the return
from FcCacheCopySet.
FcDirCacheClean
Name
FcDirCacheClean -- This tries to clean up the cache directory of
cache_dir. This returns FcTrue if the operation is successfully complete.
otherwise FcFalse.
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcDirCacheClean(const FcChar8 *cache_dir, FcBoolverbose);
Description
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Since
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version 2.9.91
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FcCacheCreateTagFile
Name
FcCacheCreateTagFile -- Create CACHEDIR.TAG at cache directory.
Synopsis
#include <fontconfig/fontconfig.h>
void FcCacheCreateTagFile(const FcConfig *config);
Description
This tries to create CACHEDIR.TAG file at the cache directory registered
to config.
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Since
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version 2.9.91
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--------------------------------------------------------------------------
FcStrSet and FcStrList
Table of Contents
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[165]FcStrSetCreate -- create a string set
[166]FcStrSetMember -- check set for membership
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[167]FcStrSetEqual -- check sets for equality
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[168]FcStrSetAdd -- add to a string set
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[169]FcStrSetAddFilename -- add a filename to a string set
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[170]FcStrSetDel -- delete from a string set
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[171]FcStrSetDestroy -- destroy a string set
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[172]FcStrListCreate -- create a string iterator
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[173]FcStrListFirst -- get first string in iteration
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[174]FcStrListNext -- get next string in iteration
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[175]FcStrListDone -- destroy a string iterator
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A data structure for enumerating strings, used to list directories while
scanning the configuration as directories are added while scanning.
FcStrSetCreate
Name
FcStrSetCreate -- create a string set
Synopsis
#include <fontconfig/fontconfig.h>
FcStrSet * FcStrSetCreate(void);
Description
Create an empty set.
FcStrSetMember
Name
FcStrSetMember -- check set for membership
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcStrSetMember(FcStrSet *set, const FcChar8 *s);
Description
Returns whether s is a member of set.
FcStrSetEqual
Name
FcStrSetEqual -- check sets for equality
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcStrSetEqual(FcStrSet *set_a, FcStrSet *set_b);
Description
Returns whether set_a contains precisely the same strings as set_b.
Ordering of strings within the two sets is not considered.
FcStrSetAdd
Name
FcStrSetAdd -- add to a string set
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcStrSetAdd(FcStrSet *set, const FcChar8 *s);
Description
Adds a copy of s to set.
FcStrSetAddFilename
Name
FcStrSetAddFilename -- add a filename to a string set
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcStrSetAddFilename(FcStrSet *set, const FcChar8 *s);
Description
Adds a copy s to set, The copy is created with FcStrCopyFilename so that
leading '~' values are replaced with the value of the HOME environment
variable.
FcStrSetDel
Name
FcStrSetDel -- delete from a string set
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcStrSetDel(FcStrSet *set, const FcChar8 *s);
Description
Removes s from set, returning FcTrue if s was a member else FcFalse.
FcStrSetDestroy
Name
FcStrSetDestroy -- destroy a string set
Synopsis
#include <fontconfig/fontconfig.h>
void FcStrSetDestroy(FcStrSet *set);
Description
Destroys set.
FcStrListCreate
Name
FcStrListCreate -- create a string iterator
Synopsis
#include <fontconfig/fontconfig.h>
FcStrList * FcStrListCreate(FcStrSet *set);
Description
Creates an iterator to list the strings in set.
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FcStrListFirst
Name
FcStrListFirst -- get first string in iteration
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Synopsis
#include <fontconfig/fontconfig.h>
void FcStrListFirst(FcStrList *list);
Description
Returns the first string in list.
Since
version 2.11.0
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FcStrListNext
Name
FcStrListNext -- get next string in iteration
Synopsis
#include <fontconfig/fontconfig.h>
FcChar8 * FcStrListNext(FcStrList *list);
Description
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Returns the next string in list.
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FcStrListDone
Name
FcStrListDone -- destroy a string iterator
Synopsis
#include <fontconfig/fontconfig.h>
void FcStrListDone(FcStrList *list);
Description
Destroys the enumerator list.
--------------------------------------------------------------------------
String utilities
Table of Contents
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[176]FcUtf8ToUcs4 -- convert UTF-8 to UCS4
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[177]FcUcs4ToUtf8 -- convert UCS4 to UTF-8
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[178]FcUtf8Len -- count UTF-8 encoded chars
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[179]FcUtf16ToUcs4 -- convert UTF-16 to UCS4
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[180]FcUtf16Len -- count UTF-16 encoded chars
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[181]FcIsLower -- check for lower case ASCII character
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[182]FcIsUpper -- check for upper case ASCII character
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[183]FcToLower -- convert upper case ASCII to lower case
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[184]FcStrCopy -- duplicate a string
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[185]FcStrDowncase -- create a lower case translation of a string
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[186]FcStrCopyFilename -- create a complete path from a filename
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[187]FcStrCmp -- compare UTF-8 strings
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[188]FcStrCmpIgnoreCase -- compare UTF-8 strings ignoring case
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[189]FcStrStr -- locate UTF-8 substring
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[190]FcStrStrIgnoreCase -- locate UTF-8 substring ignoring ASCII case
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[191]FcStrPlus -- concatenate two strings
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[192]FcStrFree -- free a string
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[193]FcStrDirname -- directory part of filename
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[194]FcStrBasename -- last component of filename
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Fontconfig manipulates many UTF-8 strings represented with the FcChar8
type. These functions are exposed to help applications deal with these
UTF-8 strings in a locale-insensitive manner.
FcUtf8ToUcs4
Name
FcUtf8ToUcs4 -- convert UTF-8 to UCS4
Synopsis
#include <fontconfig/fontconfig.h>
int FcUtf8ToUcs4(FcChar8 *src, FcChar32 *dst, int len);
Description
Converts the next Unicode char from src into dst and returns the number of
bytes containing the char. src must be at least len bytes long.
FcUcs4ToUtf8
Name
FcUcs4ToUtf8 -- convert UCS4 to UTF-8
Synopsis
#include <fontconfig/fontconfig.h>
int FcUcs4ToUtf8(FcChar32 src, FcChar8 dst[FC_UTF8_MAX_LEN]);
Description
Converts the Unicode char from src into dst and returns the number of
bytes needed to encode the char.
FcUtf8Len
Name
FcUtf8Len -- count UTF-8 encoded chars
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcUtf8Len(FcChar8 *src, int len, int *nchar, int *wchar);
Description
Counts the number of Unicode chars in len bytes of src. Places that count
in nchar. wchar contains 1, 2 or 4 depending on the number of bytes needed
to hold the largest Unicode char counted. The return value indicates
whether src is a well-formed UTF8 string.
FcUtf16ToUcs4
Name
FcUtf16ToUcs4 -- convert UTF-16 to UCS4
Synopsis
#include <fontconfig/fontconfig.h>
int FcUtf16ToUcs4(FcChar8 *src, FcEndian endian, FcChar32 *dst, int len);
Description
Converts the next Unicode char from src into dst and returns the number of
bytes containing the char. src must be at least len bytes long. Bytes of
src are combined into 16-bit units according to endian.
FcUtf16Len
Name
FcUtf16Len -- count UTF-16 encoded chars
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcUtf16Len(FcChar8 *src, FcEndian endian, int len, int *nchar, int
*wchar);
Description
Counts the number of Unicode chars in len bytes of src. Bytes of src are
combined into 16-bit units according to endian. Places that count in
nchar. wchar contains 1, 2 or 4 depending on the number of bytes needed to
hold the largest Unicode char counted. The return value indicates whether
string is a well-formed UTF16 string.
FcIsLower
Name
FcIsLower -- check for lower case ASCII character
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcIsLower(FcChar8c);
Description
This macro checks whether c is an lower case ASCII letter.
FcIsUpper
Name
FcIsUpper -- check for upper case ASCII character
Synopsis
#include <fontconfig/fontconfig.h>
FcBool FcIsUpper(FcChar8c);
Description
This macro checks whether c is a upper case ASCII letter.
FcToLower
Name
FcToLower -- convert upper case ASCII to lower case
Synopsis
#include <fontconfig/fontconfig.h>
FcChar8 FcToLower(FcChar8c);
Description
This macro converts upper case ASCII c to the equivalent lower case
letter.
FcStrCopy
Name
FcStrCopy -- duplicate a string
Synopsis
#include <fontconfig/fontconfig.h>
FcChar8 * FcStrCopy(const FcChar8 *s);
Description
Allocates memory, copies s and returns the resulting buffer. Yes, this is
strdup, but that function isn't available on every platform.
FcStrDowncase
Name
FcStrDowncase -- create a lower case translation of a string
Synopsis
#include <fontconfig/fontconfig.h>
FcChar8 * FcStrDowncase(const FcChar8 *s);
Description
Allocates memory, copies s, converting upper case letters to lower case
and returns the allocated buffer.
FcStrCopyFilename
Name
FcStrCopyFilename -- create a complete path from a filename
Synopsis
#include <fontconfig/fontconfig.h>
FcChar8 * FcStrCopyFilename(const FcChar8 *s);
Description
FcStrCopyFilename constructs an absolute pathname from s. It converts any
leading '~' characters in to the value of the HOME environment variable,
and any relative paths are converted to absolute paths using the current
working directory. Sequences of '/' characters are converted to a single
'/', and names containing the current directory '.' or parent directory
'..' are correctly reconstructed. Returns NULL if '~' is the leading
character and HOME is unset or disabled (see FcConfigEnableHome).
FcStrCmp
Name
FcStrCmp -- compare UTF-8 strings
Synopsis
#include <fontconfig/fontconfig.h>
int FcStrCmp(const FcChar8 *s1, const FcChar8 *s2);
Description
Returns the usual <0, 0, >0 result of comparing s1 and s2.
FcStrCmpIgnoreCase
Name
FcStrCmpIgnoreCase -- compare UTF-8 strings ignoring case
Synopsis
#include <fontconfig/fontconfig.h>
int FcStrCmpIgnoreCase(const FcChar8 *s1, const FcChar8 *s2);
Description
Returns the usual <0, 0, >0 result of comparing s1 and s2. This test is
case-insensitive for all proper UTF-8 encoded strings.
FcStrStr
Name
FcStrStr -- locate UTF-8 substring
Synopsis
#include <fontconfig/fontconfig.h>
FcChar8 * FcStrStr(const FcChar8 *s1, const FcChar8 *s2);
Description
Returns the location of s2 in s1. Returns NULL if s2 is not present in s1.
This test will operate properly with UTF8 encoded strings.
FcStrStrIgnoreCase
Name
FcStrStrIgnoreCase -- locate UTF-8 substring ignoring ASCII case
Synopsis
#include <fontconfig/fontconfig.h>
FcChar8 * FcStrStrIgnoreCase(const FcChar8 *s1, const FcChar8 *s2);
Description
Returns the location of s2 in s1, ignoring case. Returns NULL if s2 is not
present in s1. This test is case-insensitive for all proper UTF-8 encoded
strings.
FcStrPlus
Name
FcStrPlus -- concatenate two strings
Synopsis
#include <fontconfig/fontconfig.h>
FcChar8 * FcStrPlus(const FcChar8 *s1, const FcChar8 *s2);
Description
This function allocates new storage and places the concatenation of s1 and
s2 there, returning the new string.
FcStrFree
Name
FcStrFree -- free a string
Synopsis
#include <fontconfig/fontconfig.h>
void FcStrFree(FcChar8 *s);
Description
This is just a wrapper around free(3) which helps track memory usage of
strings within the fontconfig library.
FcStrDirname
Name
FcStrDirname -- directory part of filename
Synopsis
#include <fontconfig/fontconfig.h>
FcChar8 * FcStrDirname(const FcChar8 *file);
Description
Returns the directory containing file. This is returned in newly allocated
storage which should be freed when no longer needed.
FcStrBasename
Name
FcStrBasename -- last component of filename
Synopsis
#include <fontconfig/fontconfig.h>
FcChar8 * FcStrBasename(const FcChar8 *file);
Description
Returns the filename of file stripped of any leading directory names. This
is returned in newly allocated storage which should be freed when no
longer needed.
References
Visible links
Update to fontconfig 2.11.1. Tested by shadchin@
2014-05-18 04:33:03 -06:00
1. file:///tmp/html-rhkMLA#AEN16
2. file:///tmp/html-rhkMLA#AEN19
3. file:///tmp/html-rhkMLA#AEN31
4. file:///tmp/html-rhkMLA#AEN102
5. file:///tmp/html-rhkMLA#FCINITLOADCONFIG
6. file:///tmp/html-rhkMLA#FCINITLOADCONFIGANDFONTS
7. file:///tmp/html-rhkMLA#FCINIT
8. file:///tmp/html-rhkMLA#FCFINI
9. file:///tmp/html-rhkMLA#FCGETVERSION
10. file:///tmp/html-rhkMLA#FCINITREINITIALIZE
11. file:///tmp/html-rhkMLA#FCINITBRINGUPTODATE
12. file:///tmp/html-rhkMLA#FCPATTERNCREATE
13. file:///tmp/html-rhkMLA#FCPATTERNDUPLICATE
14. file:///tmp/html-rhkMLA#FCPATTERNREFERENCE
15. file:///tmp/html-rhkMLA#FCPATTERNDESTROY
16. file:///tmp/html-rhkMLA#FCPATTERNEQUAL
17. file:///tmp/html-rhkMLA#FCPATTERNEQUALSUBSET
18. file:///tmp/html-rhkMLA#FCPATTERNFILTER
19. file:///tmp/html-rhkMLA#FCPATTERNHASH
20. file:///tmp/html-rhkMLA#FCPATTERNADD
21. file:///tmp/html-rhkMLA#FCPATTERNADDWEAK
22. file:///tmp/html-rhkMLA#FCPATTERNADD-TYPE
23. file:///tmp/html-rhkMLA#FCPATTERNGET
24. file:///tmp/html-rhkMLA#FCPATTERNGET-TYPE
25. file:///tmp/html-rhkMLA#FCPATTERNBUILD
26. file:///tmp/html-rhkMLA#FCPATTERNDEL
27. file:///tmp/html-rhkMLA#FCPATTERNREMOVE
28. file:///tmp/html-rhkMLA#FCPATTERNPRINT
29. file:///tmp/html-rhkMLA#FCDEFAULTSUBSTITUTE
30. file:///tmp/html-rhkMLA#FCNAMEPARSE
31. file:///tmp/html-rhkMLA#FCNAMEUNPARSE
32. file:///tmp/html-rhkMLA#FCPATTERNFORMAT
33. file:///tmp/html-rhkMLA#FCFONTSETCREATE
34. file:///tmp/html-rhkMLA#FCFONTSETDESTROY
35. file:///tmp/html-rhkMLA#FCFONTSETADD
36. file:///tmp/html-rhkMLA#FCFONTSETLIST
37. file:///tmp/html-rhkMLA#FCFONTSETMATCH
38. file:///tmp/html-rhkMLA#FCFONTSETPRINT
39. file:///tmp/html-rhkMLA#FCFONTSETSORT
40. file:///tmp/html-rhkMLA#FCFONTSETSORTDESTROY
41. file:///tmp/html-rhkMLA#FCOBJECTSETCREATE
42. file:///tmp/html-rhkMLA#FCOBJECTSETADD
43. file:///tmp/html-rhkMLA#FCOBJECTSETDESTROY
44. file:///tmp/html-rhkMLA#FCOBJECTSETBUILD
45. file:///tmp/html-rhkMLA#FCFREETYPECHARINDEX
46. file:///tmp/html-rhkMLA#FCFREETYPECHARSET
47. file:///tmp/html-rhkMLA#FCFREETYPECHARSETANDSPACING
48. file:///tmp/html-rhkMLA#FCFREETYPEQUERY
49. file:///tmp/html-rhkMLA#FCFREETYPEQUERYFACE
50. file:///tmp/html-rhkMLA#FCVALUEDESTROY
51. file:///tmp/html-rhkMLA#FCVALUESAVE
52. file:///tmp/html-rhkMLA#FCVALUEPRINT
53. file:///tmp/html-rhkMLA#FCVALUEEQUAL
54. file:///tmp/html-rhkMLA#FCCHARSETCREATE
55. file:///tmp/html-rhkMLA#FCCHARSETDESTROY
56. file:///tmp/html-rhkMLA#FCCHARSETADDCHAR
57. file:///tmp/html-rhkMLA#FCCHARSETDELCHAR
58. file:///tmp/html-rhkMLA#FCCHARSETCOPY
59. file:///tmp/html-rhkMLA#FCCHARSETEQUAL
60. file:///tmp/html-rhkMLA#FCCHARSETINTERSECT
61. file:///tmp/html-rhkMLA#FCCHARSETUNION
62. file:///tmp/html-rhkMLA#FCCHARSETSUBTRACT
63. file:///tmp/html-rhkMLA#FCCHARSETMERGE
64. file:///tmp/html-rhkMLA#FCCHARSETHASCHAR
65. file:///tmp/html-rhkMLA#FCCHARSETCOUNT
66. file:///tmp/html-rhkMLA#FCCHARSETINTERSECTCOUNT
67. file:///tmp/html-rhkMLA#FCCHARSETSUBTRACTCOUNT
68. file:///tmp/html-rhkMLA#FCCHARSETISSUBSET
69. file:///tmp/html-rhkMLA#FCCHARSETFIRSTPAGE
70. file:///tmp/html-rhkMLA#FCCHARSETNEXTPAGE
71. file:///tmp/html-rhkMLA#FCCHARSETCOVERAGE
72. file:///tmp/html-rhkMLA#FCCHARSETNEW
73. file:///tmp/html-rhkMLA#FCLANGSETCREATE
74. file:///tmp/html-rhkMLA#FCLANGSETDESTROY
75. file:///tmp/html-rhkMLA#FCLANGSETCOPY
76. file:///tmp/html-rhkMLA#FCLANGSETADD
77. file:///tmp/html-rhkMLA#FCLANGSETDEL
78. file:///tmp/html-rhkMLA#FCLANGSETUNION
79. file:///tmp/html-rhkMLA#FCLANGSETSUBTRACT
80. file:///tmp/html-rhkMLA#FCLANGSETCOMPARE
81. file:///tmp/html-rhkMLA#FCLANGSETCONTAINS
82. file:///tmp/html-rhkMLA#FCLANGSETEQUAL
83. file:///tmp/html-rhkMLA#FCLANGSETHASH
84. file:///tmp/html-rhkMLA#FCLANGSETHASLANG
85. file:///tmp/html-rhkMLA#FCGETDEFAULTLANGS
86. file:///tmp/html-rhkMLA#FCLANGSETGETLANGS
87. file:///tmp/html-rhkMLA#FCGETLANGS
88. file:///tmp/html-rhkMLA#FCLANGNORMALIZE
89. file:///tmp/html-rhkMLA#FCLANGGETCHARSET
90. file:///tmp/html-rhkMLA#FCMATRIXINIT
91. file:///tmp/html-rhkMLA#FCMATRIXCOPY
92. file:///tmp/html-rhkMLA#FCMATRIXEQUAL
93. file:///tmp/html-rhkMLA#FCMATRIXMULTIPLY
94. file:///tmp/html-rhkMLA#FCMATRIXROTATE
95. file:///tmp/html-rhkMLA#FCMATRIXSCALE
96. file:///tmp/html-rhkMLA#FCMATRIXSHEAR
97. file:///tmp/html-rhkMLA#FCCONFIGCREATE
98. file:///tmp/html-rhkMLA#FCCONFIGREFERENCE
99. file:///tmp/html-rhkMLA#FCCONFIGDESTROY
100. file:///tmp/html-rhkMLA#FCCONFIGSETCURRENT
101. file:///tmp/html-rhkMLA#FCCONFIGGETCURRENT
102. file:///tmp/html-rhkMLA#FCCONFIGUPTODATE
103. file:///tmp/html-rhkMLA#FCCONFIGHOME
104. file:///tmp/html-rhkMLA#FCCONFIGENABLEHOME
105. file:///tmp/html-rhkMLA#FCCONFIGBUILDFONTS
106. file:///tmp/html-rhkMLA#FCCONFIGGETCONFIGDIRS
107. file:///tmp/html-rhkMLA#FCCONFIGGETFONTDIRS
108. file:///tmp/html-rhkMLA#FCCONFIGGETCONFIGFILES
109. file:///tmp/html-rhkMLA#FCCONFIGGETCACHE
110. file:///tmp/html-rhkMLA#FCCONFIGGETCACHEDIRS
111. file:///tmp/html-rhkMLA#FCCONFIGGETFONTS
112. file:///tmp/html-rhkMLA#FCCONFIGGETBLANKS
113. file:///tmp/html-rhkMLA#FCCONFIGGETRESCANINTERVAL
114. file:///tmp/html-rhkMLA#FCCONFIGSETRESCANINTERVAL
115. file:///tmp/html-rhkMLA#FCCONFIGAPPFONTADDFILE
116. file:///tmp/html-rhkMLA#FCCONFIGAPPFONTADDDIR
117. file:///tmp/html-rhkMLA#FCCONFIGAPPFONTCLEAR
118. file:///tmp/html-rhkMLA#FCCONFIGSUBSTITUTEWITHPAT
119. file:///tmp/html-rhkMLA#FCCONFIGSUBSTITUTE
120. file:///tmp/html-rhkMLA#FCFONTMATCH
121. file:///tmp/html-rhkMLA#FCFONTSORT
122. file:///tmp/html-rhkMLA#FCFONTRENDERPREPARE
123. file:///tmp/html-rhkMLA#FCFONTLIST
124. file:///tmp/html-rhkMLA#FCCONFIGFILENAME
125. file:///tmp/html-rhkMLA#FCCONFIGPARSEANDLOAD
126. file:///tmp/html-rhkMLA#FCCONFIGGETSYSROOT
127. file:///tmp/html-rhkMLA#FCCONFIGSETSYSROOT
128. file:///tmp/html-rhkMLA#FCNAMEREGISTEROBJECTTYPES
129. file:///tmp/html-rhkMLA#FCNAMEUNREGISTEROBJECTTYPES
130. file:///tmp/html-rhkMLA#FCNAMEGETOBJECTTYPE
131. file:///tmp/html-rhkMLA#FCNAMEREGISTERCONSTANTS
132. file:///tmp/html-rhkMLA#FCNAMEUNREGISTERCONSTANTS
133. file:///tmp/html-rhkMLA#FCNAMEGETCONSTANT
134. file:///tmp/html-rhkMLA#FCNAMECONSTANT
135. file:///tmp/html-rhkMLA#FCBLANKSCREATE
136. file:///tmp/html-rhkMLA#FCBLANKSDESTROY
137. file:///tmp/html-rhkMLA#FCBLANKSADD
138. file:///tmp/html-rhkMLA#FCBLANKSISMEMBER
139. file:///tmp/html-rhkMLA#FCATOMICCREATE
140. file:///tmp/html-rhkMLA#FCATOMICLOCK
141. file:///tmp/html-rhkMLA#FCATOMICNEWFILE
142. file:///tmp/html-rhkMLA#FCATOMICORIGFILE
143. file:///tmp/html-rhkMLA#FCATOMICREPLACEORIG
144. file:///tmp/html-rhkMLA#FCATOMICDELETENEW
145. file:///tmp/html-rhkMLA#FCATOMICUNLOCK
146. file:///tmp/html-rhkMLA#FCATOMICDESTROY
147. file:///tmp/html-rhkMLA#FCFILESCAN
148. file:///tmp/html-rhkMLA#FCFILEISDIR
149. file:///tmp/html-rhkMLA#FCDIRSCAN
150. file:///tmp/html-rhkMLA#FCDIRSAVE
151. file:///tmp/html-rhkMLA#FCDIRCACHEUNLINK
152. file:///tmp/html-rhkMLA#FCDIRCACHEVALID
153. file:///tmp/html-rhkMLA#FCDIRCACHELOAD
154. file:///tmp/html-rhkMLA#FCDIRCACHERESCAN
155. file:///tmp/html-rhkMLA#FCDIRCACHEREAD
156. file:///tmp/html-rhkMLA#FCDIRCACHELOADFILE
157. file:///tmp/html-rhkMLA#FCDIRCACHEUNLOAD
158. file:///tmp/html-rhkMLA#FCCACHEDIR
159. file:///tmp/html-rhkMLA#FCCACHECOPYSET
160. file:///tmp/html-rhkMLA#FCCACHESUBDIR
161. file:///tmp/html-rhkMLA#FCCACHENUMSUBDIR
162. file:///tmp/html-rhkMLA#FCCACHENUMFONT
163. file:///tmp/html-rhkMLA#FCDIRCACHECLEAN
164. file:///tmp/html-rhkMLA#FCCACHECREATETAGFILE
165. file:///tmp/html-rhkMLA#FCSTRSETCREATE
166. file:///tmp/html-rhkMLA#FCSTRSETMEMBER
167. file:///tmp/html-rhkMLA#FCSTRSETEQUAL
168. file:///tmp/html-rhkMLA#FCSTRSETADD
169. file:///tmp/html-rhkMLA#FCSTRSETADDFILENAME
170. file:///tmp/html-rhkMLA#FCSTRSETDEL
171. file:///tmp/html-rhkMLA#FCSTRSETDESTROY
172. file:///tmp/html-rhkMLA#FCSTRLISTCREATE
173. file:///tmp/html-rhkMLA#FCSTRLISTFIRST
174. file:///tmp/html-rhkMLA#FCSTRLISTNEXT
175. file:///tmp/html-rhkMLA#FCSTRLISTDONE
176. file:///tmp/html-rhkMLA#FCUTF8TOUCS4
177. file:///tmp/html-rhkMLA#FCUCS4TOUTF8
178. file:///tmp/html-rhkMLA#FCUTF8LEN
179. file:///tmp/html-rhkMLA#FCUTF16TOUCS4
180. file:///tmp/html-rhkMLA#FCUTF16LEN
181. file:///tmp/html-rhkMLA#FCISLOWER
182. file:///tmp/html-rhkMLA#FCISUPPER
183. file:///tmp/html-rhkMLA#FCTOLOWER
184. file:///tmp/html-rhkMLA#FCSTRCOPY
185. file:///tmp/html-rhkMLA#FCSTRDOWNCASE
186. file:///tmp/html-rhkMLA#FCSTRCOPYFILENAME
187. file:///tmp/html-rhkMLA#FCSTRCMP
188. file:///tmp/html-rhkMLA#FCSTRCMPIGNORECASE
189. file:///tmp/html-rhkMLA#FCSTRSTR
190. file:///tmp/html-rhkMLA#FCSTRSTRIGNORECASE
191. file:///tmp/html-rhkMLA#FCSTRPLUS
192. file:///tmp/html-rhkMLA#FCSTRFREE
193. file:///tmp/html-rhkMLA#FCSTRDIRNAME
194. file:///tmp/html-rhkMLA#FCSTRBASENAME
Reference in New Issue Copy Permalink