NAME
|
stringsize, stringwidth, stringnwidth, runestringsize, runestringwidth,
runestringnwidth – graphical size of strings |
SYNOPSIS
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#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
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/lib/font/bit directory of fonts |
SOURCE
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/sys/src/libdraw |
SEE ALSO
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addpt(2), cachechars(2), subfont(2), draw(2), draw(3), image(6),
font(6) |
DIAGNOSTICS
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Because strings are loaded dynamically, these routines may generate
I/O to the server and produce calls to the graphics error function. |