XFT(3)XFT(3)NAMEXft - X FreeType interface library
DESCRIPTIONXft is a simple library designed to interface the FreeType
rasterizer with the X Rendering Extension. This manual
page barely scratches the surface of this library.
DATATYPES
XftPattern holds a set of names with associated value
lists; each name refers to a property of a font. XftPat-
terns are used as inputs to the matching code as well as
holding information about specific fonts.
XftFont contains general font metrics and a pointer to
either the core XFontStruct data or a structure holding
FreeType and X Render Extension data.
XftFontStruct contains information about FreeType fonts
used with the X Render Extension.
XftFontSet contains a list of XftPatterns. Internally Xft
uses this data structure to hold sets of fonts. Exter-
nally, Xft returns the results of listing fonts in this
format.
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.
XftDraw is an opaque object which holds information used
to render to an X drawable using either core protocol or
the X Rendering extension.
FUNCTIONS
XftFont *
XftFontOpen (Display *dpy, int screen, ...);
XftFontOpen takes a list of pattern elements of the form
(field, type, value) terminated with a NULL, matches that
pattern against the available fonts and opens the matching
font.
Example:
font = XftFontOpen (dpy, scr,
XFT_FAMILY, XftTypeString, "charter",
XFT_SIZE, XftTypeDouble, 12.0, NULL);
This opens the charter font at 12 points. The point size
is automatically converted to the correct pixel size based
on the resolution of the monitor.
void
XftTextExtents8 (Display *dpy,
XftFont *font,
unsigned char *string,
int len,
XGlyphInfo *extents);
XftTextExtents8 computes the pixel extents of "string"
when drawn with "font".
XftDraw *
XftDrawCreate (Display *dpy,
Drawable drawable,
Visual *visual,
Colormap colormap);
XftDrawCreate creates a structure that can be used to ren-
der text and rectangles to the screen.
void
XftDrawString8 (XftDraw *d,
XRenderColor *color,
XftFont *font,
int x,
int y,
unsigned char *string,
int len);
XftDrawString8 draws "string" using "font" in "color" at
"x, y".
void
XftDrawRect (XftDraw *d,
XRenderColor *color,
int x,
int y,
unsigned int width,
unsigned int height);
XftDrawRect fills a solid rectangle in the specified
color.
COMPATIBILITY
As of version 2, Xft has become relatively stable and is
expected to retain source and binary compatibility in
future releases.
AUTHOR
Keith Packard, member of the XFree86 Project, Inc.
Xft Version 2.1.2 XFT(3)
