XFontSetExtents.3X11.z(3X11)



     X Version 11 (Release 5)                    XFontSetExtents(3X11)



     NAME
          XFontSetExtents - XFontSetExtents structure

     STRUCTURES
          The XFontSetExtents structure contains:

          typedef struct {
               XRectangle max_ink_extent;/* over all drawable characters */
               XRectangle max_logical_extent;/* over all drawable characters */
          } XFontSetExtents;

          The XRectangles used to return font set metrics are the
          usual Xlib screen-oriented XRectangles, with x, y giving the
          upper left corner, and width and height always positive.

          The max_ink_extent member gives the maximum extent, over all
          drawable characters, of the rectangles which bound the
          character glyph image drawn in the foreground color,
          relative to a constant origin.  See XmbTextExtents and
          XwcTextExtents for detailed semantics.

          The max_logical_extent member gives the maximum extent, over
          all drawable characters, of the rectangles which specify
          minimum spacing to other graphical features, relative to a
          constant origin.  Other graphical features drawn by the
          client, for example, a border surrounding the text, should
          not intersect this rectangle.  The max_logical_extent member
          should be used to compute minimum inter-line spacing and the
          minimum area which must be allowed in a text field to draw a
          given number of arbitrary characters.

          Due to context-dependent rendering, appending a given
          character to a string may increase the string's extent by an
          amount which exceeds the font's max extent:

          max possible added extent = (max_extent * <total # chars>) - prev_string_extent

     SEE ALSO
          XCreateFontSet(3X11), XExtentsOfFontSet(3X11),
          XFontsOfFontSet(3X11)
          Xlib - C Language X Interface














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