#include <u.h>
#include <libc.h>
#include <draw.h>
Point stringsize(Font *f, char *s)
int stringwidth(Font *f, char *s)
int stringnwidth(Font *f, char *s, int n)
Point runestringsize(Font *f, Rune *s)
int runestringwidth(Font *f, Rune *s)
int runestringnwidth(Font *f, Rune *s, int n)
DESCRIPTION
These routines compute the geometrical extent of character strings when drawn on the display. The most straightforward,
stringsize,
returns a
Point
representing the vector from upper left to lower right of the NUL-terminated string
s
drawn in font
f.
Stringwidth
returns just the
x
component.
Stringnwidth
returns the width of the first
n
characters of
s.
The routines beginning with
rune
are analogous, but accept an array of runes rather than
UTF
-encoded bytes.
FILES
/lib/font/bit directory of fonts
SOURCE
/sys/src/libdraw
SEE ALSO
addpt(2),
cachechars(2),
subfont(2),
draw(2),
draw(3),
image(6),
font(6)
DIAGNOSTICS
Because strings are loaded dynamically, these routines may generate I/O
to the server and produce calls to the graphics error function.