xfree86 man page for xft

XFT(3)							     Library Functions Manual							    XFT(3)

NAME
	Xft - X FreeType interface library

DESCRIPTION
       Xft  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
       XftFont contains general font metrics and a pointer to either the core XFontStruct data or a structure holding FreeType and X Render Exten-
       sion data.

       XftDraw	is  an	opaque object which holds information used to render to an X drawable using either core protocol or the X Rendering exten-
       sion.

       XftColor contains a pixel value and the ARGB values associated with it.

FUNCTIONS
       XftFont *
       XftFontOpen (Display *dpy, int screen, ...);
       XftFontOpen takes a list of pattern elements of the form (field, type, value) terminated with a 0, matches that pattern against the  avail-
       able fonts and opens the matching font.

       Example:
	    font  =  XftFontOpen  (dpy,  scr,			 XFT_FAMILY, XftTypeString, "charter",			  XFT_SIZE, XftTypeDouble,
       12.0);

       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,
		  FcChar8	*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);
       XtDrawCreate creates a structure that can be used to render text and rectangles to the screen.

       void
       XftDrawString8 (XftDraw	     *d,
		 XftColor  *color,
		 XftFont	*font,
		 int	   x,
		 int	   y,
		 FcChar8	*string,
		 int	   len);
       XftDrawString8 draws "string" using "font" in "color" at "x, y".

       void
       XftDrawRect (XftDraw	    *d,
		 XftColor      *color,
		 int	  x,
		 int	  y,
		 unsigned int	width,
		 unsigned int	height);
       XftDrawRect fills a solid rectangle in the specified color.

       Bool
       XftColorAllocName (Display  *dpy,
		    Visual   *visual,
		    Colormap cmap,
		    char       *name,
		    XftColor *result);
       XftColorAllocName  allocates  a	XftColor structure. It asks the X server to allocate a pixel and return the associated RGB values wich are
       used to construct an XRenderColor .  This requires a round trip (bad).

       Bool
       XftColorAllocValue (Display	 *dpy,
		     Visual	    *visual,
		     Colormap	    cmap,
		     XRenderColor    *color,
		     XftColor	    *result);
       For TrueColor visuals, XftColorAllocValue computes the nearest supported ARGB value and the associated pixel value and stores them  in  the
       result.	 No  round  trip is required.  For non-TrueColor visuals, XftColorAllocValue asks the X server to allocate the specified color and
       stores the resulting pixel and ARGB values into result.

       void
       XftColorFree (Display	*dpy,
		  Visual   *visual,
		  Colormap cmap,
		  XftColor *color);

       XftColorFree frees a color when it is no longer in use.

CONFIGURATION
       The Xft version 2 library uses fontconfig(3) for its configuration. The XftConfig files are not used anymore.

COMPATIBILITY
       As of version 2, Xft has become relatively stable and is expected to retain source and binary compatibility in future releases.

SEE ALSO
       fontconfig(3)
       /usr/X11R6/lib/X11/doc/README.fonts

AUTHOR
       Keith Packard, member of the XFree86 Project, Inc.

XFree86 							    Version 2.0 							    XFT(3)