[lcd4linux @ 2000-03-28 08:48:33 by reinelt]

README.X11 added

git-svn-id: https://ssl.bulix.org/svn/lcd4linux/trunk@26 3ae390bd-cb1e-0410-b409-cd5a39f66f1f

README.X11

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+#
+# $Id: README.X11,v 1.1 2000/03/28 08:48:33 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 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!