XFontSetExtents(3X11)         SDK X11 R4.11MU05        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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