The Linux Manuals (man pages) document is an important part of Linux documents. Linux Manuals are organized as several sections. Each section has a group of commands for a specific area in Linux usage, administration or development.
FcNameConstant – Get the value for a symbolic constant Synopsis#include <fontconfig/fontconfig.h> FcBool FcNameConstant (FcChar8 *string, int *result); DescriptionReturns whether a symbolic constant with name string is registered, placing the value of the constant in result if present.
FcMatrixShear – Shear a matrix Synopsis#include <fontconfig/fontconfig.h> void FcMatrixShear (FcMatrix *matrix, double sh, double sv); DescriptionFcMatrixShare shears matrix horizontally by sh and vertically by sv. This is done by multiplying by the matrix: 1 sh sv 1
FcMatrixScale – Scale a matrix Synopsis#include <fontconfig/fontconfig.h> void FcMatrixScale (FcMatrix *matrix, double sx, double dy); DescriptionFcMatrixScale multiplies matrix x values by sx and y values by dy. This is done by multiplying by the matrix: sx 0 0 dy
FcMatrixRotate – Rotate a matrix Synopsis#include <fontconfig/fontconfig.h> void FcMatrixRotate (FcMatrix *matrix, double cos, double sin); DescriptionFcMatrixRotate 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
FcMatrixMultiply – Multiply matrices Synopsis#include <fontconfig/fontconfig.h> void FcMatrixMultiply (FcMatrix *result, const FcMatrix *matrix1, const FcMatrix *matrix2); DescriptionFcMatrixMultiply multiplies matrix1 and matrix2 storing the result in result.
FcMatrixInit – initialize an FcMatrix structure Synopsis#include <fontconfig/fontconfig.h> void FcMatrixInit (FcMatrix *matrix); DescriptionFcMatrixInit initializes matrix to the identity matrix.
FcMatrixEqual – Compare two matrices Synopsis#include <fontconfig/fontconfig.h> void FcMatrixEqual (const FcMatrix *matrix1, const FcMatrix *matrix2); DescriptionFcMatrixEqual compares matrix1 and matrix2 returning FcTrue when they are equal and FcFalse when they are not.
FcMatrixCopy – Copy a matrix Synopsis#include <fontconfig/fontconfig.h> void FcMatrixCopy (const FcMatrix *matrix); DescriptionFcMatrixCopy allocates a new FcMatrix and copies mat into it.
FcLangSetUnion – Add langsets Synopsis#include <fontconfig/fontconfig.h> FcLangSet * FcLangSetUnion (const FcLangSet *ls_a, const FcLangSet *ls_b); DescriptionReturns a set including only those languages found in either ls_a or ls_b. Sinceversion 2.9.0
FcLangSetSubtract – Subtract langsets Synopsis#include <fontconfig/fontconfig.h> FcLangSet * FcLangSetSubtract (const FcLangSet *ls_a, const FcLangSet *ls_b); DescriptionReturns a set including only those languages found in ls_a but not in ls_b. Sinceversion 2.9.0
FcLangSetHash – return a hash value for a langset Synopsis#include <fontconfig/fontconfig.h> FcChar32 FcLangSetHash (const FcLangSet *ls); DescriptionThis 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 – test langset for language support Synopsis#include <fontconfig/fontconfig.h> FcLangResult FcLangSetHasLang (const FcLangSet *ls, const FcChar8 *lang); DescriptionFcLangSetHasLang 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….
FcLangSetGetLangs – get the list of languages in the langset Synopsis#include <fontconfig/fontconfig.h> FcStrSet * FcLangSetGetLangs (const FcLangSet *ls); DescriptionReturns a string set of all languages in langset.
FcLangSetEqual – test for matching langsets Synopsis#include <fontconfig/fontconfig.h> FcBool FcLangSetEqual (const FcLangSet *ls_a, const FcLangSet *ls_b); DescriptionReturns FcTrue if and only if ls_a supports precisely the same language and territory combinations as ls_b.
FcLangSetDestroy – destroy a langset object Synopsis#include <fontconfig/fontconfig.h> void FcLangSetDestroy (FcLangSet *ls); DescriptionFcLangSetDestroy destroys a FcLangSet object, freeing all memory associated with it.
FcLangSetDel – delete a language from a langset Synopsis#include <fontconfig/fontconfig.h> FcBool FcLangSetDel (FcLangSet *ls, const FcChar8 *lang); Descriptionlang 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. Sinceversion 2.9.0
FcLangSetCreate – create a langset object Synopsis#include <fontconfig/fontconfig.h> FcLangSet * FcLangSetCreate (void); DescriptionFcLangSetCreate creates a new FcLangSet object.
FcLangSetCopy – copy a langset object Synopsis#include <fontconfig/fontconfig.h> FcLangSet * FcLangSetCopy (const FcLangSet *ls); DescriptionFcLangSetCopy creates a new FcLangSet object and populates it with the contents of ls.
FcLangSetContains – check langset subset relation Synopsis#include <fontconfig/fontconfig.h> FcBool FcLangSetContains (const FcLangSet *ls_a, const FcLangSet *ls_b); DescriptionFcLangSetContains 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.
FcLangSetCompare – compare language sets Synopsis#include <fontconfig/fontconfig.h> FcLangResult FcLangSetCompare (const FcLangSet *ls_a, const FcLangSet *ls_b); DescriptionFcLangSetCompare 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…