Tribblix: manual page: XFontsOfFontSet.3

XFontsOfFontSet(3) XLIB FUNCTIONS XFontsOfFontSet(3)

NAME

XFontsOfFontSet, XBaseFontNameListOfFontSet, XLocaleOfFontSet,
XContextDependentDrawing, XContextualDrawing,
XDirectionalDependentDrawing - obtain fontset information

SYNTAX

int XFontsOfFontSet(XFontSet font_set, XFontStruct
***font_struct_list_return, char ***font_name_list_return);

char *XBaseFontNameListOfFontSet(XFontSet font_set);

char *XLocaleOfFontSet(XFontSet font_set);

Bool XContextDependentDrawing(XFontSet font_set);

Bool XContextualDrawing(XFontSet font_set);

Bool XDirectionalDependentDrawing(XFontSet font_set);

ARGUMENTS

font_set Specifies the font set.

font_name_list_return
Returns the list of font names.

font_struct_list_return
Returns the list of font structs.

DESCRIPTION

The XFontsOfFontSet function returns a list of one or more
XFontStructs and font names for the fonts used by the Xmb and Xwc
layers for the given font set. A list of pointers to the XFontStruct
structures is returned to font_struct_list_return. A list of
pointers to null-terminated, fully specified font name strings in the
locale of the font set is returned to font_name_list_return. The
font_name_list order corresponds to the font_struct_list order. The
number of XFontStruct structures and font names is returned as the
value of the function.

Because it is not guaranteed that a given character will be imaged
using a single font glyph, there is no provision for mapping a
character or default string to the font properties, font ID, or
direction hint for the font for the character. The client may access
the XFontStruct list to obtain these values for all the fonts
currently in use.

Xlib does not guarantee that fonts are loaded from the server at the
creation of an XFontSet. Xlib may choose to cache font data, loading
it only as needed to draw text or compute text dimensions.
Therefore, existence of the per_char metrics in the XFontStruct
structures in the XFontStructSet is undefined. Also, note that all
properties in the XFontStruct structures are in the STRING encoding.

The XFontStruct and font name lists are owned by Xlib and should not
be modified or freed by the client. They will be freed by a call to
XFreeFontSet with the associated XFontSet. Until freed, their
contents will not be modified by Xlib.

The XBaseFontNameListOfFontSet function returns the original base
font name list supplied by the client when the XFontSet was created.
A null-terminated string containing a list of comma-separated font
names is returned as the value of the function. White space may
appear immediately on either side of separating commas.

If XCreateFontSet obtained an XLFD name from the font properties for
the font specified by a non-XLFD base name, the
XBaseFontNameListOfFontSet function will return the XLFD name instead
of the non-XLFD base name.

The base font name list is owned by Xlib and should not be modified
or freed by the client. It will be freed by a call to XFreeFontSet
with the associated XFontSet. Until freed, its contents will not be
modified by Xlib.

The XLocaleOfFontSet function returns the name of the locale bound to
the specified XFontSet, as a null-terminated string.

The returned locale name string is owned by Xlib and should not be
modified or freed by the client. It may be freed by a call to
XFreeFontSet with the associated XFontSet. Until freed, it will not
be modified by Xlib.

The XContextDependentDrawing function returns True if the drawing
functions implement implicit text directionality or if text drawn
with the font_set might include context-dependent drawing; otherwise,
it returns False.

The XContextualDrawing function returns True if text drawn with the
font set might include context-dependent drawing; otherwise, it
returns False.

The XDirectionalDependentDrawing function returns True if the drawing
functions implement implicit text directionality; otherwise, it
returns False.

NAME

SYNTAX

ARGUMENTS

DESCRIPTION

SEE ALSO