NAME

       gifcompose  -  The  gifcompose  program  uses  the  GIFLIB  utility  tools  to support a minilanguage for
       describing GIF pasteup sequences.

USAGE

       gifcompose [-v] <specfile

Specification Syntax

       The gifcompose tool takes a series  of  text  lines  and  interprets  them  as  commands  to  do  pasteup
       operations. The commands are:

Generators

       gif <name>

              Paste in <name>.gif

       raw <name> <width> <height>

              Paste  in the given raw-format file (no suffix supplied).  Raw format is a stream of 8-bit indices
              into the EGA color map.  Accordingly, the width and height must be specified, and the source  must
              be exactly width times height bytes long.

       rgb <name> <width> <height>

              Paste  in  the given RGB-format file (no suffix supplied).  Raw format is a stream of 24-bit color
              values.  Accordingly, the width and height must be specified, and the source  must  be  exactly  3
              times width times height bytes long.

       rle <name>

              Paste in the given RLE-format file (no suffix supplied).  This converts the Utah Raster Kit format
              to GIF.

       text <text> [foreground <index>] [color <r> <g> <b>]

              Copy  8x8  monospace  font,  with  transparent  background and index 1 as foreground.  If the text
              string  contains  whitespaces,  they  must  be  escaped  or  the  string  must  be  quoted  (shell
              conventions).

              The  optional suffix `foreground <n>' sets the foreground color index.  The optional suffix `color
              <r> <g> <b>' sets the RGB color to be used for the foreground index.

              Each generator operation may be followed by any combination of the following suffixes:

Modifiers

       at <x> <y>

              Place the image at the given (upper-left-hand-corner) coordinates in the pasted-up result.

       clip <name> <top-x> <top-y> <bottom-x> <bottom-y>

              Clip image using the given rectange, paste it onto.

       xflip

              Flip the image around the X axis before placing it.

       yflip

              Flip the image around the Y axis before placing it.

       left

              Rotate the image 90 degrees counterclockwise before placing it.

       right

              Rotate the image 90 degrees clockwise before placing it.

Target Operations

       screen size <x-size> <y-size>

              Set the global screen size of the final image.

       screen position <x> <y>

              Set the global screen position of the final image.

Comments

       Comments or comment lines may be preceded with `#' and will be ignored.

MEMORY REQUIRED

       Proportional to the size of the largest pasted image.

OPTIONS

       [-v]

               Emit a report on each composition action to stderr as it happens.

BUGS

       The suffix sequence `left left' sometimes mysteriously fails to work, probably due to some restriction in
       <a href="gifflip.html">gifflip

       No support for resizing or odd-angle rotations yet.

       The `color' suffix of text is a no-op, because the present version of <a href="gifovly.html">gifovly

       Error checking is rudimentary.

AUTHOR

       Eric S. Raymond <esr@snark.thyrsus.com>

       Man page created by T.Gridel <tgridel@free.fr>, originally written by Eric S. Raymond <esr@thyrsus.com>

                                                  giflib-tools                                     gifcompose(1)