XFontSetExtents(3X11) XLIB FUNCTIONS XFontSetExtents(3X11)NAMEXFontSetExtents - 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, rela-
tive to a constant origin. See XmbTextExtents and XwcTex-
tExtents for detailed semantics.
The max_logical_extent member gives the maximum extent,
over all drawable characters, of the rectangles that spec-
ify 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_logi-
cal_extent member should be used to compute minimum inter-
line spacing and the minimum area that must be allowed in
a text field to draw a given number of arbitrary charac-
ters.
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 ALSOXCreateFontSet(3X11), XExtentsOfFontSet(3X11), XFontsOf-
FontSet(3X11)
Xlib - C Language X Interface
X Version 11 Release 6.4 1
