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-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 XmbTextEx-
tents and XwcTextExtents for detailed semantics.
The max_logical_extent member gives the maximum extent, over all draw-
able characters, of the rectangles that specify minimum spacing to other
graphical features, relative to a constant origin. Other graphical fea-
tures 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 char-
acter's individual extent.
SEE ALSO
XCreateFontSet(3), XExtentsOfFontSet(3), XFontsOfFontSet(3)
Xlib - C Language X Interface
X Version 11 libX11 1.8.12 XFontSetExtents(3)
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