Home Man
Search
Today's Posts
Register

Linux & Unix Commands - Search Man Pages

CentOS 7.0 - man page for xmbtextpercharextents (centos section 3)

XmbTextPerCharExtents(3)		  XLIB FUNCTIONS		 XmbTextPerCharExtents(3)

NAME
       XmbTextPerCharExtents, XwcTextPerCharExtents, Xutf8TextPerCharExtents - obtain per-charac-
       ter information for a text string

SYNTAX
       Status XmbTextPerCharExtents(XFontSet font_set, char *string, int num_bytes, XRectangle
	      *ink_array_return, XRectangle *logical_array_return, int array_size, int
	      *num_chars_return, XRectangle *overall_ink_return, XRectangle *overall_logi-
	      cal_return);

       Status XwcTextPerCharExtents(XFontSet font_set, wchar_t *string, int num_wchars, XRectan-
	      gle *ink_array_return, XRectangle *logical_array_return, int array_size, int
	      *num_chars_return, XRectangle *overall_ink_return, XRectangle *overall_logi-
	      cal_return);

       Status Xutf8TextPerCharExtents(XFontSet font_set, char *string, int num_bytes, XRectangle
	      *ink_array_return, XRectangle *logical_array_return, int array_size, int
	      *num_chars_return, XRectangle *overall_ink_return, XRectangle *overall_logi-
	      cal_return);

ARGUMENTS
       array_size
		 Specifies the size of ink_array_return and logical_array_return.  The caller
		 must pass in arrays of this size.

       font_set  Specifies the font set.

       ink_array_return
		 Returns the ink dimensions for each character.

       logical_array_return
		 Returns the logical dimensions for each character.

       num_bytes Specifies the number of bytes in the string argument.

       num_chars_return
		 Returns the number of characters in the string argument.

       num_wchars
		 Specifies the number of characters in the string argument.

       overall_ink_return
		 Returns the overall ink extents of the entire string.

       overall_logical_return
		 Returns the overall logical extents of the entire string.

       string	 Specifies the character string.

DESCRIPTION
       The XmbTextPerCharExtents, XwcTextPerCharExtents and Xutf8TextPerCharExtents functions
       return the text dimensions of each character of the specified text, using the fonts loaded
       for the specified font set.  Each successive element of ink_array_return and logi-
       cal_array_return is set to the successive character's drawn metrics, relative to the draw-
       ing origin of the string and one rectangle for each character in the supplied text string.
       The number of elements of ink_array_return and logical_array_return that have been set is
       returned to num_chars_return.

       Each element of ink_array_return is set to the bounding box of the corresponding charac-
       ter's drawn foreground color.  Each element of logical_array_return is set to the bounding
       box that provides minimum spacing to other graphical features for the corresponding char-
       acter.  Other graphical features should not intersect any of the logical_array_return rec-
       tangles.

       Note that an XRectangle represents the effective drawing dimensions of the character,
       regardless of the number of font glyphs that are used to draw the character or the direc-
       tion in which the character is drawn.  If multiple characters map to a single character
       glyph, the dimensions of all the XRectangles of those characters are the same.

       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.

       If the array_size is too small for the number of characters in the supplied text, the
       functions return zero and num_chars_return is set to the number of rectangles required.
       Otherwise, the functions return a nonzero value.

       If the overall_ink_return or overall_logical_return argument is non-NULL, XmbTextPer-
       CharExtents, XwcTextPerCharExtents and Xutf8TextPerCharExtents return the maximum extent
       of the string's metrics to overall_ink_return or overall_logical_return, as returned by
       XmbTextExtents, XwcTextExtents or Xutf8TextExtents.

       The function Xutf8TextPerCharExtents 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.

SEE ALSO
       XmbTextEscapement(3), XmbTextExtents(3) Xlib - C Language X Interface

X Version 11				   libX11 1.6.0 		 XmbTextPerCharExtents(3)


All times are GMT -4. The time now is 01:31 PM.

Unix & Linux Forums Content Copyrightę1993-2018. All Rights Reserved.
UNIX.COM Login
Username:
Password:  
Show Password