846 lines
20 KiB
Groff
846 lines
20 KiB
Groff
.\"
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.\" Copyright © 2000 Keith Packard
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.\"
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.\" Permission to use, copy, modify, distribute, and sell this software and its
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.\" documentation for any purpose is hereby granted without fee, provided that
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.\" the above copyright notice appear in all copies and that both that
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.\" copyright notice and this permission notice appear in supporting
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.\" documentation, and that the name of Keith Packard not be used in
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.\" advertising or publicity pertaining to distribution of the software without
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.\" specific, written prior permission. Keith Packard makes no
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.\" representations about the suitability of this software for any purpose. It
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.\" is provided "as is" without express or implied warranty.
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.\"
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.\" KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
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.\" INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
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.\" EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
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.\" CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
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.\" DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
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.\" TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
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.\" PERFORMANCE OF THIS SOFTWARE.
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.\"
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.TH Xft __libmansuffix__ __vendorversion__
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.SH NAME
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Xft \- X FreeType interface library
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.SH DESCRIPTION
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.B Xft
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is a simple library designed to interface the FreeType rasterizer with the X
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Rendering Extension.
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This manual page barely scratches the surface of this library.
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.SH "HEADER FILE"
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.B #include <X11/Xft/Xft.h>
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.SH CONSTANTS
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.TP
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.B XFT_MAJOR
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is the major version number of
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.BR Xft .
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.TP
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.B XFT_MINOR
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is the minor version number of
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.BR Xft .
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.TP
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.B XFT_REVISION
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is the revision number of
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.BR Xft .
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.TP
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.B XFT_VERSION
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is
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.B XFT_MAJOR
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times 10000 (ten thousand), plus
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.B XFT_MINOR
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times 100, plus
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.BR XFT_REVISION .
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.TP
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.B XftVersion
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is an alias for
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.BR XFT_VERSION .
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.PP
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The following example illustrates how
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.BR Xft 's
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version constants might be used:
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.nf
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#if (XFT_VERSION >= 20107)
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(void) puts("Version 2.1.7 or later of the Xft library is in"
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" use.");
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#else
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(void) printf("Insufficient version of Xft (%d.%d.%d) installed;
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" need at least version 2.1.7.\(rsn", XFT_MAJOR,
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XFT_MINOR,
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XFT_REVISION);
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#endif
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.fi
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.\" I don't understand what these are for. -- BR, 2005-04-02
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.\" XFT_CORE used in xftname.c
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.\" XFT_RENDER used in xftdpy.c, xftfreetype.c, xftname.c
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.\" XFT_XLFD used in xftname.c, xftxlfd.c
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.\" XFT_MAX_GLYPH_MEMORY used in xftdpy.c, xftfreetype.c
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.\" XFT_MAX_UNREF_FONTS used in xftdpy.c
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.\" XFT_NMISSING used in xftcore.c, xftextent.c, xftglyphs.c,
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.\" xftrender.c
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.SH "DATA TYPES"
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.TP
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.B XftFont
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.nf
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typedef struct _XftFont {
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int ascent;
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int descent;
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int height;
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int max_advance_width;
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FcCharSet *charset;
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FcPattern *pattern;
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} XftFont;
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.fi
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An
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.B XftFont
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is the primary data structure of interest to programmers using
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.BR Xft ;
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it contains general font metrics and pointers to the Fontconfig
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character set and pattern associated with the font.
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The
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.B FcCharSet
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and
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.B FcPattern
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data types are defined by the Fontconfig library.
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.TP
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.B ""
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.BR XftFont s
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are populated with any of
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.BR XftFontOpen (),
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.BR XftFontOpenName (),
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.BR XftFontOpenXlfd (),
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.BR XftFontOpenInfo (),
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or
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.BR XftFontOpenPattern ().
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.BR XftFontCopy ()
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is used to duplicate
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.BR XftFont s,
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and
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.BR XftFontClose ()
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is used to mark an
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.B XftFont
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as unused.
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.BR XftFont s
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are internally allocated, reference-counted, and freed by
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.BR Xft ;
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the programmer does not ordinarily need to allocate or free storage
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for them.
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.TP
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.B ""
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.BR XftDrawGlyphs (),
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the
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.BR XftDrawString *()
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family,
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.BR XftDrawCharSpec (),
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and
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.BR XftDrawGlyphSpec ()
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use
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.BR XftFont s
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to render text to an
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.B XftDraw
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object, which may correspond to either a core X drawable or an X
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Rendering Extension drawable.
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.TP
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.B ""
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.BR XftGlyphExtents ()
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and the
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.BR XftTextExtents *()
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family are used to determine the extents (maximum dimensions) of an
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.BR XftFont .
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.TP
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.B ""
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An
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.BR XftFont 's
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glyph or character coverage can be determined with
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.BR XftFontCheckGlyph ()
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or
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.BR XftCharExists ().
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.BR XftCharIndex ()
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returns the
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.BR XftFont -specific
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character index corresponding to a given Unicode codepoint.
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.TP
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.B ""
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.BR XftGlyphRender (),
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.BR XftGlyphSpecRender (),
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.BR XftCharSpecRender (),
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and the
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.BR XftTextRender *()
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family use
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.BR XftFont s
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to draw into X Rendering Extension
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.B Picture
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structures.
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.B Note:
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.BR XftDrawGlyphs (),
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the
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.BR XftDrawString *()
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family,
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.BR XftDrawCharSpec (),
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and
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.BR XftDrawGlyphSpec ()
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provide a means of rendering fonts that is independent of the
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availability of the X Rendering Extension on the X server.
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.\" I'm not sure what these are for; they're used internally, but why
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.\" would any external users want them? -- BR, 2005-04-02
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.\" .BR XftLockFace()
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.\" .BR XftUnlockFace()
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.TP
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.B XftFontInfo
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is an opaque object that stores information about a font.
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.B XftFontInfo
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structures are created with
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.BR XftFontInfoCreate (),
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freed with
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.BR XftFontInfoDestroy (),
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and compared with
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.BR XftFontInfoEqual ().
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.B XftFontInfo
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objects are internally allocated and freed by
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.BR Xft ;
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the programmer does not ordinarily need to allocate or free storage
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for them.
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.TP
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.B ""
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Each
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.B XftFontInfo
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structure in use is associated with a unique identifier, which can be
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retrieved with
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.BR XftFontInfoHash ().
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An
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.B XftFont
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can be opened based on
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.B XftFontInfo
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data with
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.BR XftFontOpenInfo ().
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.TP
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.B XftColor
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.nf
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typedef struct _XftColor {
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unsigned long pixel;
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XRenderColor color;
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} XftColor;
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.fi
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An
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.B XftColor
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object permits text and other items to be rendered in a particular
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color (or the closest approximation offered by the X visual in use).
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The
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.B XRenderColor
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data type is defined by the X Render Extension library.
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.TP
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.B ""
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.BR XftColorAllocName ()
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and
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.BR XftColorAllocValue ()
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request a color allocation from the X server (if necessary) and
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initialize the members of
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.BR XftColor .
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.BR XftColorFree ()
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instructs the X server to free the color currently allocated for an
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.BR XftColor .
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.TP
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.B ""
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One an
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.B XftColor
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has been initialized,
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.BR XftDrawSrcPicture (),
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.BR XftDrawGlyphs (),
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the
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.BR XftDrawString *()
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family,
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.BR XftDrawCharSpec (),
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.BR XftDrawCharFontSpec (),
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.BR XftDrawGlyphSpec (),
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.BR XftDrawGlyphFontSpec (),
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and
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.BR XftDrawRect ()
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may be used to draw various objects using it.
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.TP
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.B XftDraw
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is an opaque object which holds information used to render to an X drawable
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using either the core protocol or the X Rendering extension.
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.TP
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.B ""
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.B XftDraw
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objects are created with any of
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.BR XftDrawCreate ()
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(which associates an
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.B XftDraw
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with an existing X drawable),
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.BR XftDrawCreateBitmap (),
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or
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.BR XftDrawCreateAlpha (),
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and destroyed with
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.BR XftDrawDestroy ().
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The X drawable associated with an
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.B XftDraw
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can be changed with
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.BR XftDrawChange ().
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.BR XftDraw s
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are internally allocated and freed by
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.BR Xft ;
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the programmer does not ordinarily need to allocate or free storage
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for them.
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.TP
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.B ""
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The X
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.BR Display ,
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.BR Drawable ,
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.BR Colormap ,
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and
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.BR Visual
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of an
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.B XftDraw
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can be queried with
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.BR XftDrawDisplay (),
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.BR XftDrawDrawable (),
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.BR XftDrawColormap (),
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and
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.BR XftDrawVisual (),
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respectively.
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The X Rendering Extension
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.B Picture
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associated with an
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.B XftDraw
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is returned by
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.BR XftDrawPicture ().
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.\" XftDrawSrcPicture
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.\" XftDrawGlyphs
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.\" XftDrawString*
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.\" XftDrawCharSpec
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.\" XftDrawCharFontSpec
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.\" XftDrawGlyphSpec
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.\" XftDrawGlyphFontSpec
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.\" XftDrawRect
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.\" XftDrawSetClip
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.\" XftDrawSetClipRectangles
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.\" XftDrawSetSubwindowMode
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.TP
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.B XftCharSpec
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.nf
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typedef struct _XftCharSpec {
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FcChar32 ucs4;
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short x;
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short y;
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} XftCharSpec;
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.fi
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.TP
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.B ""
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The
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.B FcChar32
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data type is defined by the Fontconfig library.
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.\" XftDrawCharSpec
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.\" XftCharSpecRender
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.TP
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.B XftCharFontSpec
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.nf
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typedef struct _XftCharFontSpec {
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XftFont *font;
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FcChar32 ucs4;
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short x;
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short y;
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} XftCharFontSpec;
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.fi
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.TP
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.B ""
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The
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.B FcChar32
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data type is defined by the Fontconfig library.
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.\" XftDrawCharFontSpec
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.\" XftCharFontSpecRender
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.TP
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.B XftGlyphSpec
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.nf
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typedef struct _XftGlyphSpec {
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FT_UInt glyph;
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short x;
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short y;
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} XftGlyphSpec;
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.fi
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.TP
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.B ""
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The
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.B FT_UInt
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data type is defined by the FreeType library.
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.\" XftDrawGlyphSpec
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.\" XftGlyphSpecRender
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.TP
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.B XftGlyphFontSpec
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.nf
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typedef struct _XftGlyphFontSpec {
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XftFont *font;
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FT_UInt glyph;
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short x;
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short y;
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} XftGlyphFontSpec;
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.fi
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.TP
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.B ""
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The
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.B FT_UInt
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data type is defined by the FreeType library.
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.\" XftDrawGlyphFontSpec
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.\" XftGlyphFontSpecRender
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.SH FUNCTIONS
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.SS "Opening and Matching Fonts"
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.nf
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\fBXftFont *\fR
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\fBXftFontOpen (Display *\fIdpy\fB,\fR
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\fB int \fIscreen\fB,\fR
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\fB ...);\fR\fR
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.fi
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.B XftFontOpen
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takes a list of pattern element triples of the form
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.IR field , " type" , " value"
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(terminated with a NULL), matches that pattern against the available fonts,
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and opens the matching font, sizing it correctly for screen number
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.I screen
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on display
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.IR dpy .
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The
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.B Display
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data type is defined by the X11 library.
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Returns NULL if no match is found.
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.PP
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Example:
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.nf
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font = XftFontOpen (dpy, screen,
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XFT_FAMILY, XftTypeString, "charter",
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XFT_SIZE, XftTypeDouble, 12.0,
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NULL);
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.fi
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This opens the \(lqcharter\(rq font at 12 points.
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The point size is automatically converted to the correct pixel size based
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on the resolution of the monitor.
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.PP
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.nf
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\fBXftFont *\fR
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\fBXftFontOpenName (Display *\fIdpy\fB,\fR
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\fB int \fIscreen\fB,\fR
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\fB unsigned char *\fIname\fB);\fR
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.fi
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.B XftFontOpenName
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behaves as
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.B XftFontOpen
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does, except that it takes a Fontconfig pattern string (which is passed to
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the Fontconfig library's
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.BR FcNameParse ()
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function).
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.PP
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.nf
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\fBXftFont *\fR
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\fBXftFontOpenXlfd (Display *\fIdpy\fB,\fR
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\fB int \fIscreen\fB,\fR
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\fB unsigned char *\fIxlfd\fB)\fR
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.fi
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.B XftFontOpenXlfd
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behaves as
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.B XftFontOpen
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does, except that it takes a string containing an X Logical Font
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Description (XLFD).
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.PP
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.nf
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\fBFcPattern *\fR
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\fBXftFontMatch (Display *\fIdpy\fB,\fR
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\fB int \fIscreen\fB,\fR
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\fB FcPattern *\fIpattern\fB,\fR
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\fB FcResult *\fIresult\fB);\fR
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.fi
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Also used internally by the
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.BR XftFontOpen *
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functions,
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.B XftFontMatch
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can also be used directly to determine the Fontconfig font pattern
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resulting from an Xft font open request.
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The
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.B FcPattern
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and
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.B FcResult
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data types are defined by the Fontconfig library.
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.SS "Determining the Pixel Extents of a Text String"
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.nf
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\fBvoid\fR
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\fBXftTextExtents8 (Display *\fIdpy\fB,\fR
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\fB XftFont *\fIfont\fB,\fR
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\fB FcChar8 *\fIstring\fB,\fR
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\fB int \fIlen\fB,\fR
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\fB XGlyphInfo *\fIextents\fB);\fR
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.fi
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.B XftTextExtents8
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computes the pixel extents on display
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.I dpy
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of no more than
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.I len
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glyphs of a
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.I string
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consisting of eight-bit characters when drawn with
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.IR font ,
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storing them in
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.IR extents .
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The
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.B FcChar8
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data type is defined by the Fontconfig library, and the
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.B XGlyphInfo
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data type is defined by the X Rendering Extension library.
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.PP
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.nf
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\fBvoid\fR
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\fBXftTextExtents16 (Display *\fIdpy\fB,\fR
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\fB XftFont *\fIfont\fB,\fR
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\fB FcChar16 *\fIstring\fB,\fR
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\fB int \fIlen\fB,\fR
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\fB XGlyphInfo *\fIextents\fB);\fR
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.fi
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.B XftTextExtents16
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computes the pixel extents on display
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.I dpy
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of no more than
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.I len
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glyphs of a
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.I string
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consisting of sixteen-bit characters when drawn with
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.IR font ,
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storing them in
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.IR extents .
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The
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.B FcChar16
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data type is defined by the Fontconfig library, and the
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.B XGlyphInfo
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data type is defined by the X Rendering Extension library.
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.PP
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.nf
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\fBvoid\fR
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\fBXftTextExtents32 (Display *\fIdpy\fB,\fR
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\fB XftFont *\fIfont\fB,\fR
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\fB FcChar32 *\fIstring\fB,\fR
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\fB int \fIlen\fB,\fR
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\fB XGlyphInfo *\fIextents\fB);\fR
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.fi
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.B XftTextExtents32
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computes the pixel extents on display
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.I dpy
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of no more than
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.I len
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glyphs of a
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.I string
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consisting of thirty-two-bit characters when drawn with
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.IR font ,
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storing them in
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.IR extents .
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The
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.B FcChar32
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data type is defined by the Fontconfig library, and the
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.B XGlyphInfo
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data type is defined by the X Rendering Extension library.
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.PP
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.nf
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\fBvoid\fR
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\fBXftTextExtentsUtf8 (Display *\fIdpy\fB,\fR
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\fB XftFont *\fIfont\fB,\fR
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\fB FcChar8 *\fIstring\fB,\fR
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\fB int \fIlen\fB,\fR
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\fB XGlyphInfo *\fIextents\fB);\fR
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.fi
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.B XftTextExtentsUtf8
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computes the pixel extents on display
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.I dpy
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of no more than
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.I len
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bytes of a UTF-8 encoded
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.I string
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when drawn with
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.IR font ,
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storing them in
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.IR extents .
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The
|
|
.B XGlyphInfo
|
|
data type is defined by the X Rendering Extension library.
|
|
.PP
|
|
.nf
|
|
\fBvoid\fR
|
|
\fBXftTextExtentsUtf16 (Display *\fIdpy\fB,\fR
|
|
\fB XftFont *\fIfont\fB,\fR
|
|
\fB FcChar8 *\fIstring\fB,\fR
|
|
\fB FcEndian \fIendian\fB,\fR
|
|
\fB int \fIlen\fB,\fR
|
|
\fB XGlyphInfo *\fIextents\fB);\fR
|
|
.fi
|
|
.B XftTextExtentsUtf16
|
|
computes the pixel extents on display
|
|
.I dpy
|
|
of no more than
|
|
.I len
|
|
bytes of a UTF-16LE- or UTF-16BE-encoded
|
|
.I string
|
|
when drawn with
|
|
.IR font ,
|
|
storing them in
|
|
.IR extents .
|
|
The endianness of
|
|
.I string
|
|
must be specified in
|
|
.IR endian .
|
|
The
|
|
.B FcEndian
|
|
data type is defined by the Fontconfig library, and the
|
|
.B XGlyphInfo
|
|
data type is defined by the X Rendering Extension library.
|
|
.PP
|
|
.nf
|
|
\fBvoid\fR
|
|
\fBXftGlyphExtents (Display *\fIdpy\fB,\fR
|
|
\fB XftFont *\fIfont\fB,\fR
|
|
\fB FT_UInt *\fIglyphs\fB,\fR
|
|
\fB int \fInglyphs\fB,\fR
|
|
\fB XGlyphInfo *\fIextents\fB);\fR
|
|
.fi
|
|
Also used internally by the
|
|
.BR XftTextExtents *
|
|
functions,
|
|
.B XftGlyphExtents
|
|
computes the pixel extents on display
|
|
.I dpy
|
|
of no more than
|
|
.I nglyphs
|
|
in the array
|
|
.I glyphs
|
|
drawn with
|
|
.IR font ,
|
|
storing them in
|
|
.IR extents .
|
|
The
|
|
.B FT_UInt
|
|
data type is defined by the FreeType library, and the
|
|
.B XGlyphInfo
|
|
data type is defined by the X Rendering Extension library.
|
|
.SS "Drawing Strings (and Other Things)"
|
|
.nf
|
|
\fBXftDraw *\fR
|
|
\fBXftDrawCreate (Display *\fIdpy\fB,\fR
|
|
\fB Drawable \fIdrawable\fB,\fR
|
|
\fB Visual *\fIvisual\fB,\fR
|
|
\fB Colormap \fIcolormap\fB);\fR
|
|
.fi
|
|
.B XftDrawCreate
|
|
creates a structure that can be used to render text and rectangles using
|
|
the specified
|
|
.IR drawable ,
|
|
.IR visual ,
|
|
and
|
|
.I colormap
|
|
on
|
|
.IR display .
|
|
The
|
|
.BR Drawable ,
|
|
.BR Visual ,
|
|
and
|
|
.B Colormap
|
|
data types are defined by the X11 library.
|
|
.PP
|
|
.nf
|
|
\fBXftDraw *\fR
|
|
\fBXftDrawCreateBitmap (Display *\fIdpy\fB,\fR
|
|
\fB Pixmap \fIbitmap\fB);\fR
|
|
.fi
|
|
.B XftDrawCreateBitmap
|
|
behaves as
|
|
.BR XftDrawCreate ,
|
|
except it uses an X pixmap of color depth 1 instead of an X drawable.
|
|
The
|
|
.B Pixmap
|
|
data type is defined by the X11 library.
|
|
.PP
|
|
.nf
|
|
\fBXftDraw *\fR
|
|
\fBXftDrawCreateAlpha (Display *\fIdpy\fB,\fR
|
|
\fB Pixmap \fIpixmap\fB,\fR
|
|
\fB int \fIdepth\fB);\fR
|
|
.fi
|
|
.B XftDrawCreateAlpha
|
|
behaves as
|
|
.BR XftDrawCreate ,
|
|
except it uses an X pixmap of color depth
|
|
.I depth
|
|
instead of an X drawable.
|
|
The
|
|
.B Pixmap
|
|
data type is defined by the X11 library.
|
|
.PP
|
|
.nf
|
|
\fBvoid\fR
|
|
\fBXftDrawChange (XftDraw *\fIdraw\fB,\fR
|
|
\fB Drawable \fIdrawable\fB);\fR
|
|
.fi
|
|
.B XftDrawChange
|
|
changes the X drawable association of the existing Xft draw object
|
|
.I draw
|
|
from its current value to
|
|
.IR drawable .
|
|
.PP
|
|
.nf
|
|
\fBDisplay *\fR
|
|
\fBXftDrawDisplay (XftDraw *\fIdraw\fB);\fR
|
|
.fi
|
|
.B XftDrawDisplay
|
|
returns a pointer to the display associated with the Xft draw object
|
|
.IR draw .
|
|
.PP
|
|
.nf
|
|
\fBDrawable\fR
|
|
\fBXftDrawDrawable (XftDraw *\fIdraw\fB);\fR
|
|
.fi
|
|
.B XftDrawDrawable
|
|
returns the X drawable associated with the Xft draw object
|
|
.IR draw .
|
|
.PP
|
|
.nf
|
|
\fBColormap\fR
|
|
\fBXftDrawColormap (XftDraw *\fIdraw\fB);\fR
|
|
.fi
|
|
.B XftDrawColormap
|
|
returns the colormap associatied with the Xft draw object
|
|
.IR draw .
|
|
.PP
|
|
.nf
|
|
\fBVisual *\fR
|
|
\fBXftDrawVisual (XftDraw *\fIdraw\fB);\fR
|
|
.fi
|
|
.B XftDrawVisual
|
|
returns a pointer to the visual associated with the Xft draw object
|
|
.IR draw .
|
|
.PP
|
|
.nf
|
|
\fBPicture\fR
|
|
\fBXftDrawPicture (XftDraw *\fIdraw\fB);\fR
|
|
.fi
|
|
.B XftDrawPicture
|
|
returns the picture associated with the Xft draw object
|
|
.IR draw .
|
|
If the the X server does not support the X Rendering Extension, 0 is
|
|
returned.
|
|
.PP
|
|
.nf
|
|
\fBPicture\fR
|
|
\fBXftDrawSrcPicture (XftDraw *\fIdraw\fB,\fR
|
|
\fB XftColor *\fIcolor\fB);\fR
|
|
.fi
|
|
.\" Unfortunately, I'm not quite sure what this does. I think it is the gizmo
|
|
.\" that is used to create an Xrender Picture object so that glyphs can be
|
|
.\" drawn in the XftDraw object
|
|
.\" .I draw
|
|
.\" using the specified
|
|
.\" .IR color .
|
|
.\" -- BR, 2005-04-02
|
|
This function is never called if the X server doesn't support the X
|
|
Rendering Extension; instead,
|
|
.B XftGlyphCore
|
|
is used.
|
|
.PP
|
|
.nf
|
|
\fBvoid\fR
|
|
\fBXftDrawDestroy (XftDraw *\fIdraw\fB);\fR
|
|
.fi
|
|
.B XftDrawDestroy
|
|
destroys
|
|
.I draw
|
|
(created by one of the
|
|
.B XftCreate
|
|
functions) and frees the memory that was allocated for it.
|
|
.PP
|
|
.nf
|
|
\fBvoid\fR
|
|
\fBXftDrawString8 (XftDraw *\fId\fB,\fR
|
|
\fB XRenderColor *\fIcolor\fB,\fR
|
|
\fB XftFont *\fIfont\fB,\fR
|
|
\fB int \fIx\fB,\fR
|
|
\fB int \fIy\fB,\fR
|
|
\fB unsigned char *\fIstring\fB,\fR
|
|
\fB int \fIlen\fB);\fR
|
|
.fi
|
|
.B XftDrawString8
|
|
draws no more than
|
|
.I len
|
|
glyphs of
|
|
.I string
|
|
to Xft drawable
|
|
.I d
|
|
using
|
|
.I font
|
|
in
|
|
.I color
|
|
at position
|
|
.IR x , " y" .
|
|
The
|
|
.B XRenderColor
|
|
data type is defined by the X Rendering Extension library.
|
|
.PP
|
|
.nf
|
|
\fBvoid\fR
|
|
\fBXftDrawRect (XftDraw *\fId\fB,\fR
|
|
\fB XRenderColor *\fIcolor\fB,\fR
|
|
\fB int \fIx\fB,\fR
|
|
\fB int \fIy\fB,\fR
|
|
\fB unsigned int \fIwidth\fB,\fR
|
|
\fB unsigned int \fIheight\fB);\fR
|
|
.fi
|
|
.B XftDrawRect
|
|
draws a solid rectangle of the specified
|
|
.IR color ,
|
|
.IR width ,
|
|
and
|
|
.I height
|
|
at position
|
|
.IR x , " y"
|
|
to Xft drawable
|
|
.IR d .
|
|
.SH COMPATIBILITY
|
|
As of version 2,
|
|
.B Xft
|
|
has become relatively stable and is expected to retain source and binary
|
|
compatibility in future releases.
|
|
.PP
|
|
.B Xft
|
|
does provide a compatibility interface to its previous major version,
|
|
Xft
|
|
.RI 1. x ,
|
|
described below.
|
|
.SS "Xft 1.x Compatibility Header File"
|
|
.B #include <X11/Xft/XftCompat.h>
|
|
.\" .SS "Xft 1.x Compatibility Constants"
|
|
.SS "Xft 1.x Compatibility Data Types"
|
|
.TP
|
|
.B XftPattern
|
|
holds a set of names with associated value lists; each name refers to a
|
|
property of a font.
|
|
.BR XftPattern s
|
|
are used as inputs to the matching code as well as holding information
|
|
about specific fonts.
|
|
.TP
|
|
.B XftFontSet
|
|
contains a list of
|
|
.BR XftPattern s.
|
|
Internally,
|
|
.B Xft
|
|
uses this data structure to hold sets of fonts.
|
|
Externally,
|
|
.B Xft
|
|
returns the results of listing fonts in this format.
|
|
.TP
|
|
.B XftObjectSet
|
|
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.
|
|
.\" .SS "Xft 1.x Compatibility Functions"
|
|
.SH AUTHOR
|
|
Keith Packard
|
|
.SH "SEE ALSO"
|
|
.I Fontconfig Developers Reference
|
|
.br
|
|
.I FreeType API Reference
|
|
.br
|
|
.I Xlib \- C Language Interface
|
|
.\" Set Vim modeline; textwidth is 70 to account for the extra margin
|
|
.\" padding that man (on Debian GNU/Linux) does for output to
|
|
.\" terminals (7 spaces on the left, 2 on the right), so that we don't
|
|
.\" go past 80 columns total, particularly in .nf/.fi regions.
|
|
.\" vim:set ai et sts=4 sw=4 tw=70:
|