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authorreinelt <>2003-07-28 08:22:17 +0000
committerreinelt <>2003-07-28 08:22:17 +0000
commit6ea1ce26e69f1180806cd31f71a3e59091820371 (patch)
tree81727c51879200aa64fb97163e4333811c8cf066 /README.X11
parent80ad6d155c1b974590f0c96b6291b0baa70b09d5 (diff)
downloadlcd4linux-6ea1ce26e69f1180806cd31f71a3e59091820371.tar.gz
[lcd4linux @ 2003-07-28 08:22:17 by reinelt]
several README's moved to web page
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-#
-# $Id: README.X11,v 1.3 2003/02/18 06:13:44 reinelt Exp $
-#
-
-This is the README file for the X11 display driver for lcd4linux
-
-The driver opens a X11 window based on the geometry specified in the
-config file. This window cannot be resized. The contents of the window
-will be redrawn every 'tick' msec.
-
-The driver uses very low cpu time, and requires low bandwitdh, because
-only modified pixels are redrawn.
-
-
-Configuration:
-
-The driver needs/supports the following entries in lcd4linux.conf:
-
-Display: must be "X11"
-size: [columns]x[rows], e.g. "20x4"
-font: [xrex]x[yres], at the moment only "5x8" and "6x8" supported.
-pixel: [pixelsize]+[pixelgap], e.g. "5+1"
-gap: [row gap]x[column gap], e.g. "3x3"
-border: border width
-foreground: color of an active LCD Pixel, must be #rrggbb
-halfground: color of an inactive LCD Pixel, must be #rrggbb
-background: backlight color, must be #rrggbb
-
-This may look weird, but it is weird. Let's explain this a bit further:
-The X11 driver tries to emulate a real LC display. A real LCD has a
-size of columns*rows characters. Each character consists of xres*yres
-LCD cells. One single cell will be represented by a rectangle of
-pixelsize*pixelsize pixels. If you want to, you can emulate the gap
-between this lcd cells by specifying a pixelgap greater than zero.
-Sometimes there's a gap between characters, too. You can specify this
-gap (in pixels again) horizontally and vertically. Usually this gap
-is the same size as a cell (which is pixelsize+pixelgap). If you specify
-either the row gap or the column gap as -1, this cell size will be used
-instead.
-
-If you use a font of 5x8, some characters may use the first and the last
-pixel. So you should specify a column gap, otherwise the caracters may
-touch. On the other hand, the 6x8 font never uses the first pixel. So you
-can omit the column gap, and will get the same text layout, but
-uninterupted bars!
-
-After all: don't try to understand this unless you have tried it out!