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bggen (1)
  • >> bggen (1) ( Solaris man: Команды и прикладные программы пользовательского уровня )
  • 
    NAME
         bggen - generates colored backgrounds on X11 displays
    
    SYNTAX
         bggen [-d display] [-g geometry] [-G rptgeom] [-r rot]  [-a]
         [-w  width] [-h height] [-b bits] <color-spec> [<color-spec>
         ...]
    
    DESCRIPTION
         bggen is a  program  that  generates  a  rectangular  24-bit
         image,  with  a  smooth vertical gradient between the listed
         colors.  (If you only specify one color, the image will be a
         single  solid color.)  The top of the image will be in color
         (r1,g1,b1), and the bottom of the image  will  be  in  color
         (rn,gn,bn).   Intermediate positions in the image are inter-
         polated between these colors.  If you specify  more  than  2
         colors,  the  gradient  passes  through  all  the  specified
         colors, in the order specified.
    
         The '-d' option lets you specify what display to connect to.
         bggen  only  connects to the display to find out the size of
         the screen (and hence, the default size  for  the  generated
         image).
    
         The '-g' option lets you control the size of the image, as a
         standard  X  geometry  specification.   (ie,  something like
         "512x348")
    
         The '-G' option lets you control the tile size, as  a  stan-
         dard X geometry specification.  (ie, something like "32x32")
         Normally, (if you don't give  a  -G  option),  the  gradient
         fills  the  entire  image.   If you specify a -G option, the
         gradient will fill a portion of the image, and that  portion
         will be 'center-tiled' to fill the rest of the image.
    
         The '-r'  option  lets  you  rotate  the  gradient  counter-
         clockwise by the specified number of degrees.
    
         The '-a' option lets you force bggen to generate an image in
         PPM 'Ascii' format, rather than in PPM 'raw' format.
    
         The '-w' and '-h' options also let you set the size  of  the
         image.  They are provided only for backward compatibility.
    
         The '-b' option specifies the number of significant bits  in
         the  (output) color specifications.  It must range between 1
         and 8, inclusive.  Use values less than 8 (the  default)  to
         limit  color use by increasing the color granularity.  Since
         XV can do this sort of thing  better,  this  is  of  dubious
         value.
    
    
         A <color-spec> can be three integers  separated  by  spaces,
         forming  an  R,G,B triple ("0 255 0").  The values should be
         between 0 and 255.
    
         A <color-spec> can also be a standard X color  specification
         by  name  ("green") or value ("#00ff00").  This is decidedly
         easier, and the 'three integer' method  remains  mainly  for
         backward  compatibility.   One  note:   the '#' character is
         treated specially by many shells,  and  should  probably  be
         protected  by  putting  a  '\'  character in front of it, or
         wrapping the entire value with a pair of single-quotes.
    
         bggen doesn't  actually  affect  your  background  directly.
         bggen  merely  generates  a  PPM  (Portable  Pixmap  Format)
         datafile and dumps it to 'stdout'.  It's up  to  some  other
         program (such as XV) to read this file and display it.
    
         To use bggen, you should pipe its output into an XV command,
         such as:  "xv -root -quit -"
    
    TRY THESE
         Light Blue to Dark Blue
              bggen 100 100 255  0 0 100  | xv -root -quit  -
         RGB Rainbow
              bggen red green blue | xv -root -quit -
         Green Cylinders
              bggen black green black -h 128 | xv -root -quit -
         Blue to Magenta
              bggen blue magenta | xv -root -quit -
         Full Rainbow
              bggen black red yellow green blue purple black | xv -root -quit  -
         Repeating Rainbow
              bggen red yellow green blue purple red -h 256 | xv -root -quit -
         Green Tiles
              bggen green black  -r 30 -g 32x32 | xv -root -quit -
         Red Balls
              bggen red black -r 45 -g 32x32 | xv -root -quit -rmode 3 -
         Red+Yellow Diamonds
              bggen red yellow  -r 45 -g 32x32 | xv -root -quit -rmode 3 -
    
    AUTHOR
         John Bradley  -  [email protected]
    
    
    
    


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