62 lines
2.5 KiB
Text
62 lines
2.5 KiB
Text
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Information about the textmenu chooser
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--------------------------------------
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Copyright (C) 2002-2003 Hewlett-Packard Co.
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Contributed by <rhirst@linuxcare.com>
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Last updated: 02/02/14
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Chooser name: textmenu
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Command line option: -C textmenu
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Config file option: chooser=textmenu
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The textmenu chooser provides a facility whereby you can draw a colour
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boot screen, using line-drawing characters to give the impression of a
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dialog box, with a scrollable menu from which a boot image can be chosen
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via cursor up/down keys. A one-line input field is provided for additional
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parameter input. Menu entries are taken from the description= fields in
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the config file.
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The message file format is based on that used for syslinux/isolinux on ia32
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platforms, which is copyright H. Peter Anvin. It is basically a text file
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containing text and graphic characters, along with some control codes to
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specify colour attributes, menu, and prompt field positions. There are two
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classes of message files; the main file, specified via message=, which
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includes menu and prompt field markers, and the additional help files which
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are invoked via function keys. Graphic characters are taken from the
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standard IBM VGA character set, and using an appropriate font makes file
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creation easier. Under Linux you can find a VGA font in the dosemu package.
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Included in the elilo source is sys2ansi.pl (taken from syslinux), which can
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be used to translate colour attributes such that they display correctly in an
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xterm.
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Valid control codes:
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0x01 ^A Mark top left or bottom right of menu area. Current attributes
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at top left marker are used for inactive menu entries, current
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attributes when bottom right marker is found are used for the
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currently active menu attributes.
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0x02 ^B Mark left- or right-hand end of the prompt field. Current attributes
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at the left had end are used to display and parameters entered.
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0x0A ^J Linefeed, does implied carriage return.
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0x0C ^L Clear screen
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0x0D ^M Carriage return; ignored so files can be 'DOS' or 'UNIX' format.
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0x0F ^O Attribute specfication; Two hex digits should follow this code, the
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first being the background colour required, the second the foreground.
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0 = black 8 = dark grey
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1 = dark blue 9 = bright blue
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2 = dark green a = bright green
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3 = dark cyan b = bright cyan
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4 = dark red c = bright red
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5 = dark purple d = bright purple
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6 = brown e = yellow
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7 = light grey f = white
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An example of a config file and message file are included in the examples
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directory.
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