fvwm-root - Sets the root window of the current X display to
image
fvwm-root [--retain-pixmap|-r]
[--no-retain-pixmap] [--dummy|-d] [--no-dummy]
[--dither] [--no-dither] [--color-limit
[ncolors] ] [--no-color-limit]
[--help|-h|-?] [--version|-V]
image_file
fvwm-root reads the image file specified in the command
line and displays it in the root window. The supported image formats are
XBM, XPM, PNG and SVG if appropriated libraries
are compiled in.
SVG rendering options (as described in the ICONS AND IMAGES
section of the main fvwm documentation) can be utilized.
These command line options are recognized by fvwm-root:
- --retain-pixmap
| -r
- Causes fvwm-root to retain and publish the Pixmap with which the
background has been set (the ESETROOT_PMAP_ID and _XROOTPMAP_ID properties
are used). This is useful for applications which want to use the root
Pixmap on the background to simulate transparency (for example, Eterm and
Aterm use this method). This option should also be used for the
RootTransparent colorset option, refer to the COLORSETS section of
fvwm(1). If this option is not used, fvwm-root sets the _XSETROOT_ID
property to None, and some programs, like fvwm modules, may use this to
update their background if the background is transparent (Transparent
colorset).
Note, a well behaved program, like fvwm, should listen to both
_XSETROOT_ID and _XROOTPMAP_ID property changes and update itself
correspondingly. However some programs listen only to one of them, so
you should either use this option or not depending on what part is
implemented by these programs. You should also use this option to get
fast root-transparent menus in fvwm.
- --no-retain-pixmap
- This is a default. May be useful to explicitly force the default even if
"--retain-pixmap" is specified earlier.
- --dummy |
-d
- Causes fvwm-root NOT to set the background, but to only free a memory
associated with the ESETROOT_PMAP_ID property (if any). In any case the
_XSETROOT_ID property is set to None.
- --no-dummy
- This is a default. May be useful to explicitly force the default even if
"--dummy" is specified earlier.
- --dither
- Causes fvwm-root to dither images for "smoother" rendition on
displays with color depth of 16 or lower. This the default with color
depth less or equal to 8.
- --no-dither
- Causes fvwm-root NOT to dither images. This is the default with color
depth greater than 8.
- --color-limit
ncolors
- Causes fvwm-root to limit its color use to ncolors (if specified).
This option is taken in account only with color depth less or equal to 8
(and a TrueColor or GrayScale visual). The default is to use the same
color limit as fvwm. So in normal situation this option is not useful.
However, if fvwm use a private colors map, as fvwm-root always use the
default colors map you should use this option for limiting colors
correctly. If ncolors is not specified a default is used.
- --no-color-limit
- Causes fvwm-root NOT to limit its color use.
- --help
- Shows a short usage.
- --version
- Shows a version number.
In the past this utility was called xpmroot. This name is
still supported as a symlink.
Repeated use of fvwm-root with different xpm pixmaps will use up
slots in your color table pretty darn fast.
Rob Nation
Rewritten and enhanced by fvwm-workers.