Provided by: magic_7.5.214-1_i386 bug

NAME

       glyphs - format of .glyphs files

DESCRIPTION

       Glyph  files (``.glyph'' extension) are used to store commonly-used bit
       patterns (glyphs) for Magic.  Right now, the bit patterns are used  for
       two  purposes  in Magic.  First, they specify patterns for programmable
       cursors:  each cursor shape (e.g. the arrow used for the  wiring  tool)
       is  read  in  as a glyph from a glyph file.  Second, glyphs are used by
       the window manager to represent the icons  displayed  at  the  ends  of
       scroll bars.  Glyph file names normally have the extension .glyph.

       Glyph files are stored in ASCII format.  Lines beginning with ``#'' are
       considered to be comments  and  are  ignored.   Blank  lines  are  also
       ignored.   The  first  non-comment  line  in a glyph file must have the
       syntax size nGlyphs width height The nGlyphs field  must  be  a  number
       giving  the  total  number of glyphs stored in the file.  The width and
       height fields give the dimensions of each glyph in pixels.  All  glyphs
       in the same file must have the same size.

       The  size  line  is  followed  by a description for each of the glyphs.
       Each glyph consists of height lines each containing 2xwidth characters.
       Each  pair  of  characters  corresponds to a bit position in the glyph,
       with the leftmost pair on the topmost line corresponding to the  upper-
       left pixel in the glyph.

       The  first character of each pair specifies the color to appear in that
       pixel.  The color is represented as as a single character,  which  must
       be the short name of a display style in the current display style file.
       Some commonly-used characters are K for black, W for white, and  .  for
       the  background  color  (when . is used in a cursor, it means that that
       pixel position is transparent:  the underlying picture appears  through
       the cursor).  See ``Magic Maintainer's Manual #3: Display Styles, Color
       Maps, and Glyphs'' for more information.

       The second character of each pair is normally  blank,  except  for  one
       pixel per glyph which may contain a ``*'' in the second character.  The
       ``*'' is used for programmable cursors to indicate the  hot-spot:   the
       pixel  corresponding  to  the  ``*''  is  the  one  that  the cursor is
       considered to point to.

       For an example of a glyph file, see ~cad/lib/magic/sys/color.glyphs.

SEE ALSO

       magic(1), dstyle(5)