TYPES(9) TYPES(9)
NAME
types - Standard types required by widget options.
DESCRIPTION
This manual entry describes the the standard types that can
be given as arguments to Inferno Tk widget options. When an
option is documented, the type of argument that it accepts
is either documented there, or the name of the argument
refers to one of the names documented below.
anchorPos
One of the values n, ne, e, se, s, sw, w, nw, or cen-
ter. See -anchor in options(9).
boolean
A true or false value, one of the following: 0, no,
off, false (false), 1, yes, on, true (true).
bitmap
Identifies an image which can be drawn, or used as a
mask through which something else is drawn. If bitmap
begins with a `@', the remaining characters must be the
path name of an Inferno image file. If bitmap begins
with the character `<', the remaining characters must
be a decimal integer giving the file descriptor number
of an open file (see sys-open(2)) from which the bitmap
can be loaded. Otherwise, bitmap should be the name of
a bitmap file in the directory /icons/tk.
color
A color parameter can be a colour name or an RGB (red,
green and blue luminance) value. The colour names rec-
ognized are:
aqua yellow red teal white
fuchsia black blue darkblue transparent
maroon gray green lime
purple navy olive orange
For RGB values, either #rgb or #rrggbb can be used,
where r, rr, etc. are hexadecimal values for the corre-
sponding colour components. The notation #rrggbbaa can
be used to describe a colour with alpha (transparency)
component aa; the rr, gg, and bb values should be pre-
multiplied appropriately. This is the canonical form
for colour values. Alternatively, transparency can be
applied to any other colour using a suffix *alpha where
alpha is either #aa (two hex digits representing an
alpha value between 0 and 255) or f (a decimal fixed
point number between 0 and 1). For example, red*0.5
gives half transparent red; #007f007f*#7f gives 0.75
transparent green (canonically #003f003f).
Page 1 Plan 9 (printed 12/22/24)
TYPES(9) TYPES(9)
dist Dist specifies a distance on the screen, in the follow-
ing form: an optional minus sign (-), then one or more
decimal digits (with possible embedded decimal point),
then an optional units specifier. The unit specifiers
are the following:
c centimetres
m millimetres
i inches
p points (1/72th inch)
h height of widget's font (only applicable if the
widget has an associated font, and if the font has
previously been set).
w width of the zero (0) character in widget's font.
(see above).
Measurements are converted into pixels assuming 100 dots
per inch on an average CRT display.
font A font parameter gives the full path name of an Inferno
font file; for example, /fonts/pelm/unicode.9.font.
frac A numeric, possibly fractional, value.
relief
One of raised, sunken, flat, ridge, or groove. See
-relief in options(9).
SEE ALSO
intro(9), options(9)
Page 2 Plan 9 (printed 12/22/24)