ref: 4fedd7d4fe1c3b509c84d12e971aaa466b8b4b3d
dir: /sys/man/2/stringsize/
.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.