XFontSetExtents(3) XLIB FUNCTIONS XFontSetExtents(3)
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-ori-
ented rectangles with x, y giving the upper left corner, and width and height always posi-
tive.
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 sur-
rounding 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
X Version 11 libX11 1.1.5 XFontSetExtents(3)
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