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pack-old(n) - pack, pack - Obsolete syntax for packer geometry manager - man n pack-old

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pack-old(n)                  Tk Built-In Commands                  pack-old(n)



NAME
       pack(3,n,n pack-old) - Obsolete syntax for packer geometry manager

SYNOPSIS
       pack(3,n,n pack-old) after sibling window options ?window options ...?

       pack(3,n,n pack-old) append parent window options ?window options ...?

       pack(3,n,n pack-old) before sibling window options ?window options ...?

       pack(3,n,n pack-old) unpack window


DESCRIPTION
       Note: this manual entry describes the syntax for the pack(3,n,n pack-old) command as it
       existed before Tk version(1,3,5) 3.3.  Although this syntax  continues  to  be
       supported  for backward compatibility, it is obsolete and should not be
       used anymore.  At some point in(1,8) the future it  may  cease  to  be  sup-
       ported.

       The packer is a geometry manager that arranges the children of a parent
       by packing them in(1,8) order around the edges of  the  parent.   The  first
       child  is  placed  against one side of the window, occupying the entire
       span of the window along that side.  This reduces the  space  remaining
       for  other children as if(3,n) the side had been moved in(1,8) by the size of the
       first child.  Then the next child is placed against  one  side  of  the
       remaining  cavity,  and  so  on  until all children have been placed or
       there is no space left in(1,8) the cavity.

       The before, after, and append forms of the pack(3,n,n pack-old)  command  are  used  to
       insert  one  or  more children into the packing order for their parent.
       The before form inserts the  children  before  window  sibling  in(1,8)  the
       order;   all  of  the  other  windows must be siblings of sibling.  The
       after form inserts the windows  after  sibling,  and  the  append  form
       appends one or more windows to the end of the packing order for parent.
       If a window named(5,8) in(1,8) any of these commands is  already  packed  in(1,8)  its
       parent,  it  is  removed from its current position in(1,8) the packing order
       and repositioned as indicated by the command.  All  of  these  commands
       return an empty string(3,n) as result.

       The  unpack  form  of  the pack(3,n,n pack-old) command removes window from the packing
       order of its parent and unmaps it.  After the execution of this command
       the packer will no longer manage window's geometry.

       The  placement  of  each  child  is  actually  a four-step process; the
       options argument following each window consists of a  list  of  one  or
       more  fields  that govern the placement of that window.  In the discus-
       sion below, the term(5,7) cavity refers to the space left in(1,8) a parent when a
       particular  child  is placed (i.e. all the space that wasn't claimed by
       earlier children in(1,8) the packing order).  The term(5,7) parcel refers to  the
       space  allocated  to  a  particular child;  this is not necessarily the
       same as the child window's final geometry.

       The first step in(1,8) placing a child is to determine  which  side  of  the
       cavity  it  will  lie against.  Any one of the following options may be
       used to specify a side:

       top    Position the child's parcel against the top of the cavity, occu-
              pying the full width of the cavity.

       bottom Position  the  child's  parcel against the bottom of the cavity,
              occupying the full width of the cavity.

       left   Position the child's parcel against the left side of the cavity,
              occupying the full height of the cavity.

       right  Position  the  child's parcel against the right side of the cav-
              ity, occupying the full height of the cavity.

       At most one of these options should be specified for any given  window.
       If no side is specified, then the default is top.

       The  second  step  is to decide on a parcel for the child.  For top and
       bottom windows, the desired parcel width is normally the  cavity  width
       and  the  desired  parcel  height  is the window's requested height, as
       passed to Tk_GeometryRequest. For left and right windows,  the  desired
       parcel  height  is  normally the cavity height and the desired width is
       the window's requested width.  However, extra space  may  be  requested
       for the window using any of the following options:

       padx num    Add  num pixels to the window's requested width before com-
                   puting the parcel size as described above.

       pady num    Add num pixels to the window's requested height before com-
                   puting the parcel size as described above.

       expand      This  option  requests  that the window's parcel absorb any
                   extra space left over in(1,8) the parent's cavity after  packing
                   all the children.  The amount of space left over depends on
                   the sizes requested by the other children, and may be zero.
                   If several windows have all specified expand then the extra
                   width will be divided equally among all the left and  right
                   windows  that specified expand and the extra height will be
                   divided equally among all the top and bottom  windows  that
                   specified expand.

       If  the  desired width or height for a parcel is larger than the corre-
       sponding dimension of the cavity, then the cavity's dimension  is  used
       instead.

       The third step in(1,8) placing the window is to decide on the window's width
       and height.  The default is  for  the  window  to  receive  either  its
       requested  width  and  height  or the those of the parcel, whichever is
       smaller.  If the parcel is larger than  the  window's  requested  size,
       then  the  following  options  may be used to expand the window to par-
       tially or completely fill the parcel:

       fill   Set the window's size to equal the parcel size.

       fillx  Increase the window's width to equal  the  parcel's  width,  but
              retain the window's requested height.

       filly  Increase  the  window's height to equal the parcel's height, but
              retain the window's requested width.

       The last step is to decide the window's location within its parcel.  If
       the  window's  size  equals  the  parcel's size, then the window simply
       fills the entire parcel.  If the parcel is larger than the window, then
       one  of  the  following options may be used to specify where the window
       should be positioned within its parcel:

       frame center   Center the window in(1,8) its parcel.  This is the default if(3,n)
                      no framing option is specified.

       frame n        Position  the  window  with its top edge centered on the
                      top edge of the parcel.

       frame ne       Position the window with its upper-right corner  at  the
                      upper-right corner of the parcel.

       frame e        Position  the window with its right edge centered on the
                      right edge of the parcel.

       frame se       Position the window with its lower-right corner  at  the
                      lower-right corner of the parcel.

       frame s        Position the window with its bottom edge centered on the
                      bottom edge of the parcel.

       frame sw       Position the window with its lower-left  corner  at  the
                      lower-left corner of the parcel.

       frame w        Position  the  window with its left edge centered on the
                      left edge of the parcel.

       frame nw       Position the window with its upper-left  corner  at  the
                      upper-left corner of the parcel.

       The packer manages the mapped/unmapped state of all the packed children
       windows.  It automatically maps the windows when it packs them, and  it
       unmaps any windows for which there was no space left in(1,8) the cavity.

       The  packer  makes geometry requests on behalf of the parent windows it
       manages.  For each parent window it requests a  size  large  enough  to
       accommodate  all the options specified by all the packed children, such
       that zero space would be leftover for expand options.


KEYWORDS
       geometry manager, location, packer, parcel, size



Tk                                    4.0                          pack-old(n)

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