Skip site navigation (1)Skip section navigation (2)

FreeBSD Manual Pages


home | help
XmbTextExtents(3)		XLIB FUNCTIONS		     XmbTextExtents(3)

       XmbTextExtents, XwcTextExtents, Xutf8TextExtents	- compute text extents

       int   XmbTextExtents(XFontSet   font_set,  _Xconst  char	 *string,  int
	      num_bytes,  XRectangle  *overall_ink_return,  XRectangle	*over-

       int  XwcTextExtents(XFontSet  font_set,	_Xconst	 wchar_t  *string, int
	      num_wchars, XRectangle  *overall_ink_return,  XRectangle	*over-

       int  Xutf8TextExtents(XFontSet  font_set,  _Xconst  char	 *string,  int
	      num_bytes,  XRectangle  *overall_ink_return,  XRectangle	*over-

       font_set	 Specifies the font set.

       num_bytes Specifies the number of bytes in the string argument.

		 Specifies the number of characters in the string argument.

		 Returns the overall ink dimensions.

		 Returns the overall logical dimensions.

       string	 Specifies the character string.

       The  XmbTextExtents,  XwcTextExtents and	Xutf8TextExtents functions set
       the components of the specified	overall_ink_return  and	 overall_logi-
       cal_return  arguments to	the overall bounding box of the	string's image
       and a logical bounding box for spacing  purposes,  respectively.	  They
       return  the  value  returned by XmbTextEscapement, XwcTextEscapement or
       Xutf8TextEscapement.  These metrics are relative	to the drawing	origin
       of the string, using the	fonts loaded for the specified font set.

       If the overall_ink_return argument is non-NULL, it is set to the	bound-
       ing box of the string's character ink.  The  overall_ink_return	for  a
       nondescending, horizontally drawn Latin character is conventionally en-
       tirely above the	baseline; that is, overall_ink_return.height <=	-over-
       all_ink_return.y.   The overall_ink_return for a	nonkerned character is
       entirely	at, and	to the right of, the origin; that is,  overall_ink_re-
       turn.x  >=  0.	A character consisting of a single pixel at the	origin
       would set overall_ink_return fields y = 0, x = 0, width = 1, and	height
       = 1.

       If  the	overall_logical_return	argument is non-NULL, it is set	to the
       bounding	box that provides minimum spacing to other graphical  features
       for  the	 string.  Other	graphical features, for	example, a border sur-
       rounding	the text, should not intersect this rectangle.

       When the	XFontSet has missing charsets, metrics	for  each  unavailable
       character  are taken from the default string returned by	XCreateFontSet
       so that the metrics represent the text as it will  actually  be	drawn.
       The behavior for	an invalid codepoint is	undefined.

       The function Xutf8TextExtents is	an extension introduced	by The XFree86
       Project,	Inc., in their 4.0.2 release.  Its presence  is	 indicated  by
       the macro X_HAVE_UTF8_STRING.

       XmbTextEscapement(3),  XmbTextPerCharExtents(3) Xlib - C	Language X In-

X Version 11			 libX11	1.6.12		     XmbTextExtents(3)


Want to link to this manual page? Use this URL:

home | help