add text to a portable pixmap
see also :
[-angle angle] [-background
transparent | colour] [-colour
colour] [-file filename]
[-size textsize] [-text
’text string’] [-x
column] [-y row] ...
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uses the text drawing facilities of ppmdraw to add
text to a portable pixmap. The location, size, baseline
angle, colour of the text and background colour (if any) are
controlled by command line arguments. The text can be
specified on the command line or read from files. Any number
of separate text strings can be added by one invocation of
ppmlabel, limited only by the maximum length of the
ppmfile is specified, ppmdraw reads its input
pixmap from standard input.
on the ppmlabel command line are not options in the
strict sense; they are commands which control the placement
and appearance of the text being added to the input pixmap.
They are executed left to right, and any number of arguments
All flags can
be abbreviated to their shortest unique prefix.
Sets the angle of the baseline
of subsequent text. angle is specified as an integral
number of degrees, measured counterclockwise from the row
axis of the pixmap.
transparent | colour
If the argument is
is drawn over the existing pixels in the pixmap. If a
colour is given (see the -colour switch
below for information on how to specify colours), rectangles
enclosing subsequent text are filled with that colour.
Sets the colour for subsequent
text. The colour can be specified in five ways:
A name, assuming that a pointer to an X11-style colour
names file was compiled in.
An X11-style hexadecimal specifier: rgb:r/g/b, where r g
and b are each 1- to 4-digit hexadecimal numbers.
An X11-style decimal specifier: rgbi:r/g/b, where r g
and b are floating point numbers between 0 and 1.
For backwards compatibility, an old-X11-style
hexadecimal number: #rgb, #rrggbb, #rrrgggbbb, or
For backwards compatibility, a triplet of numbers
separated by commas: r,g,b, where r g and b are floating
point numbers between 0 and 1. (This style was added before
MIT came up with the similar rgbi style.)
Reads text from the file
filename and draws it on successive lines.
Sets the height of the tallest
characters above the baseline to textsize pixels.
Draws the given text string
(which must be quoted if it contains spaces). The location
for subsequent text is advanced by 1.75 times the current
textsize, which allows drawing multiple lines of text
in a reasonable manner without specifying the position of
Sets the column at which subsequent text will be left
justified. Depending on the shape of the first character,
the actual text may begin a few pixels to the right of this
Sets the row which will form the baseline of subsequent
text. Characters with descenders, such as
’’y’’, will extend below this
are restricted to 7 bit ASCII. The text font used by
ppmdraw doesn’t include definitions for 8 bit
ISO 8859/1 characters.
multiple lines of text with a non-transparent background, it
should probably fill the space between the lines with the
background colour. This is tricky to get right when the text
is rotated to a non-orthogonal angle.
The -size, -x,
and -y options MUST precede the -text option specifying the
string they apply to, or they will be silently ignored in
favor of the defaults.
1995 by John Walker (kelvin[:at:]fourmilab[:dot:]ch) WWW home page:
Permission to use, copy, modify,
and distribute this software and its documentation for any
purpose and without fee is hereby granted, without any
conditions or restrictions. This software is provided
’’as is’’ without express or implied