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README for PNG added git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@96 3ae390bd-cb1e-0410-b409-cd5a39f66f1f
48 lines
1.7 KiB
Plaintext
48 lines
1.7 KiB
Plaintext
#
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# $Id: README.Png,v 1.1 2001/03/02 18:06:18 reinelt Exp $
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#
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This is the README file for the Png display driver for lcd4linux.
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Preliminarys: libgd, libpng, libz
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Optional: perl, apache
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The driver creates the output file specified with the -o switch. The
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parameter is used as a format string for sprintf(), if you specify '%d'
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in the output file, files with a sequence number will be created.
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The output file is first created with a '.tmp' extension, this temporary
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file will be written and closed, and finally (atomically) renamed. This way
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you can be shure that you will always get a complete file, but its contents
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changes every 'tick' milliseconds.
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Configuration:
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The driver needs/supports the following entries in lcd4linux.conf:
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Display: must be "Png"
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size: [columns]x[rows], e.g. "20x4"
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font: [xrex]x[yres], at the moment only "5x8" and "6x8" supported.
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pixel: [pixelsize]+[pixelgap], e.g. "5+1"
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gap: [row gap]x[column gap], e.g. "3x3"
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border: border width
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foreground: color of an active LCD Pixel, must be #rrggbb
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halfground: color of an inactive LCD Pixel, must be #rrggbb
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background: backlight color, must be #rrggbb
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For details please look into README.Raster.
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To display this png file continuosly in a web page, follow these instructions:
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Copy the sample png.html to an appropriate place under your htdocs.
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Copy the sample nph-png perl script into your cgi-bin directory, and adjust
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png.html to contain this directory.
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Adjust nph-png to contain the path/filename of the outputfile (s -o above).
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Start lcd4linux -o path/filename.png.
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If you are on a slow connection to your webserver you might also adjust the
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$DELAY in nph-png or in lcd4linux.conf.
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Note: depending on your webervers configuration, you must rename nph-png to
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nph-png.pl or npg-png.cgi.
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Have fun.
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