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Man Pages


Manual Reference Pages  -  CHBG (1)

NAME

chbg - root background image changer & manager for X

CONTENTS

SYNOPSIS

chbg [OPTIONS..] [IMAGE FILES]

DESCRIPTION

chbg is a simple program for managing & changing desktop pictures that can also be used as a xscreensaver(1) client.

OPTIONS

-v Prints version number and exit.
-h --help Prints help message and exit.
-setup Starts setup window.
-scenario filename
  Fetch parameters from specified file.
-mode type
  Set picture rendering mode from following types : tile, mirror, center, maximize, smart, centertile, inttile, symtile, intmirror, symmirror.
(Default: smart)
-effect n
  Effect type for changing pictures [0-29].
0 : no effect. (Default)
1 : random effect.
2-29 : various picture changing effects.
-bg "#rrggbb"
  Set default background color 1. (Default: #000000)
-bg2 "#rrggbb"
  Set default background color 2. (Default: #ffffff)
-rand_colors
  Randomize background colors.
-shader n
  Set background color shading effect type [0-564].
0 : no shading. (Default)
1 : random shading style.
2-564 : various shading types.
-interval n.n-n.n
  Picture change time in [min].[sec] format. Adding second time value ChBg generates random changetime using user defined values as boundaries. New changetime is generated during picture change.
(Default: 5)
-max_grow n.n
  Maximal growing ratio of picture in smart mode.
(Default: 1.0)
-max_size percentage
  Maximal size of picture in % of screen size used in smart mode, acceptable value 10-100.
(Default: 90)
-xpos n.n Adjust picture’s horizontal position in screen when using smart mode.
(Value between 0.0-1.0 Default: 0.5)
-ypos n.n Adjust picture’s vertical position in screen when using smart mode.
(Value between 0.0-1.0 Default: 0.5)
-randomize
  Randomize picture order.
-screensaver
  Act as screensaver.
-xscreensaver
  Act as xscreensaver client.
-speed n Speed ratio for picture changing effects. Smaller value means faster change.
(Default: 100)
-blank Show blank screen, when unable to load picture.
-cycle_blank
  When pictures not present cycle with blanking screen. (optionaly with shading)
-R Recurse through directory and search pictures. See also options -pattern and -min_psize.
-pattern pattern
  Wildcard pattern for picture selection in recursion through directories. When you want to use more patterns, use more -pattern options.
(effects only when used with -R option)
-inwindow
  Run in own window not on root.
-windowid id
  Run in existing window.
-run Start run after setup window is popped up.
(effects only when used with -setup option)
-min_psize n
  Minimal size of picture when recursing through directory. This option allows you to exclude small pictures or possible thumbnails.
(effects only when used with -R option)
-deffects list
  List of disabled picture changing effects when randomizing. This option allows you to omit some picture changing effects, which you don’t like or which doesn’t suit your needs. Usable, when you want to reject some of slow effects when faster changing is required.
-dshaders list
  List of disabled background shading effects when randomizing. This option allows you to omit some picture changing effects, which you don’t like or which doesn’t suit your needs.
-notooltips
  Disable showing description tooltips for setup controls.
-friter n
  Set number of iterations in fractal based shading effects.
(Default: 30)
-rect_size n
  Set size of used rectangle in any of picture changing effects.
(Default: 16)
-grad_dir dir
  Directory where GIMP gradients can be located on your system. As default following directories are scanned to search gradient files.
/usr/share/gimp/gradients
/usr/share/gimp-1.1/gradients
/usr/share/gimp-1.2/gradients
/opt/share/gimp/gradients
/opt/share/gimp-1.1/gradients
/opt/share/gimp-1.2/gradients
/usr/local/share/gimp/gradients
/usr/local/share/gimp-1.1/gradients
/usr/local/share/gimp-1.2/gradients
When GIMP gradient files are elsewhere than default directories, use this option to force ChBg to load GIMP gradients from your directory. When ChBg can’t find gradient, it will automatically disable all gradient shading features.
-use_grad
  Enable the use of GIMP gradients for coloring background shading effects.
-grad n Set gradient number to use for coloring background shading effects. 0 means random.
-remember
  Allow remembering of last shown picture. This is very usable when you maintain very long list of pictures and next time when you run ChBg with same scenario file you want to continue from that point where you left ChBg last time.
WARNING: this feature requires to have saved scenarion and that scenario must be writable by user.
-enlightenment
  If you are running Enlightenment window manager on your desktop, you may want to use its functions to manage desktop background images. When you enable this option, ChBg will try to use its capabilities. This works only with enlightenment 0.16 and above using eesh program.
-once This option have only effect when used directly from commandline and ChBg will run without GUI environment. When this option is used, ChBg will run only one cycle of background changing and after that it will exit. This is usable if you want to change background once per session (for example from .xinitrc or .xsession startup scripts or Gnome/KDE session managers).
-thumb type
  You can use this option when you just want to use directly one of ChBg’s thumbnail previews. As type use one of all/dir/page.
-use_tiles
  This option activates coloring of shading effects by tiled pixmaps. To activate it fully, you must also use -tile option.
-tile file
  With this option you can set picture which will be used as tile for coloring background shading effects or just plain drawn on backround when no shading effect will be used. To activate this feature you must also use -use_tiles option, otherwise it won’t work. You can also set the file parameter to random and ChBg will select randomly one of tiles set by -add_tile option.
-add_tile file
  Use this option, when you want to use multiple tiles for coloring background shading effects. Parameter file can be one picture file or directory with pictures, which will be scanned recursively for pictures. See also -tile and -use_tiles options.
-use_banners
  This options activates use of banner pictures on top of normal background pictures. Banner pictures will be drawn in mode similar to smart mode for normal background pictures. To fully use this feature, you must also set banner pictures with -banner and or -add_banner options.
-banner file
  Parameter file of this options sets particular banner picture file or when it is set to "random" it can randomly select one banner from banner files added by -add_banner option.
-add_banner file
  Set a directory where to find banner pictures or file which will be use as a banner.
-banner_mode mode
  ChBg allows various drawing modes for drawing banner on top of background. You can set one of normal, average, lighten, darken, divide, multiply, multiplybg, multiplyfg, add, subtractbg, subtractfg, grayscale, bumpmap, bumpmapself or number 0-13.
-banner_xpos pos
  Horizontal position of banner on the screen. It is similar to -xpos.
-banner_ypos pos
  Vertical position of banner on the screen. It is similar to -ypos.
-banner_max_grow ratio
  Maximal banner growing ratio. This option is equal to -max_grow option, it is just applied to banners.
-banner_max_size nr
  Maximal allowed area of screen taken by banner. It is equal to -max_size option.
-to_file Render the composite picture directly to file. To work fully -out_file, -out_file_width and -out_file_height have to be given. Fileformat of the rendered picture is PNG.
-out_file filename
  Set the composite picture’s filename.
-out_file_width n
  Set composite picture’s width.
(Default value 0 means that ChBg takes size from X root window.)
-out_file_height n
  Set composite picture’s height.
(Default value 0 means that ChBg takes size from X root window.)
-force_nautilus
  Force Nautilus to use ChBg generated picture.
-send_expose
  Send expose event to foreign window to force redraw.

FILES

chbgrc.sample
Sample configuration file.

BUGS

See file BUGS in chbg source distribution.

AUTHOR

Programm - Stefan Ondrejicka <ondrej@idata.sk>
Manual page - Mikko Kilponen <mikil@uni.kaapeli.net>

SEE ALSO

X(1), xscreensaver(1), xscreensaver-command(1).
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CHBG-1.5 (1)

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