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