XFontSetExtents(3X11X Version 11 (Release 6.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 XRectangle structures used to return font set metrics
are the usual Xlib screen-oriented rectangles 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 that 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 that 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 interline spacing and the
minimum area that 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 change the string's extent by an
amount other than that character's individual extent.
SEE ALSO
XCreateFontSet(3X11), XExtentsOfFontSet(3X11),
XFontsOfFontSet(3X11)
Xlib - C Language X Interface
Page 1 (printed 7/20/06)
