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diff --git a/doc/pack-old.n b/doc/pack-old.n new file mode 100644 index 0000000..a0638b6 --- /dev/null +++ b/doc/pack-old.n @@ -0,0 +1,196 @@ +'\" +'\" Copyright (c) 1990-1994 The Regents of the University of California. +'\" Copyright (c) 1994-1996 Sun Microsystems, Inc. +'\" +'\" See the file "license.terms" for information on usage and redistribution +'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES. +'\" +'\" SCCS: @(#) pack-old.n 1.12 96/03/26 18:25:44 +'\" +.so man.macros +.TH pack-old n 4.0 Tk "Tk Built-In Commands" +.BS +'\" Note: do not modify the .SH NAME line immediately below! +.SH NAME +pack \- Obsolete syntax for packer geometry manager +.SH SYNOPSIS +\fBpack after \fIsibling \fIwindow options\fR ?\fIwindow options \fR...? +.sp +\fBpack append \fIparent \fIwindow options\fR ?\fIwindow options \fR...? +.sp +\fBpack before \fIsibling \fIwindow options\fR ?\fIwindow options \fR...? +.sp +\fBpack unpack \fIwindow\fR +.BE + +.SH DESCRIPTION +.PP +\fINote: this manual entry describes the syntax for the \fBpack\fI +command as it existed before Tk version 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 +Although this syntax continues to be supported for backward +compatibility, it is obsolete and should not be used anymore.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 the future it may cease to be supported.\fR +.PP +The packer is a geometry manager that arranges the +children of a parent by packing them in 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 the side had been moved in 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 the cavity. +.PP +The \fBbefore\fR, \fBafter\fR, and \fBappend\fR forms of the \fBpack\fR +command are used to insert one or more children into the packing order +for their parent. The \fBbefore\fR form inserts the children before +window \fIsibling\fR in the order; all of the other windows must be +siblings of \fIsibling\fR. The \fBafter\fR form inserts the windows +after \fIsibling\fR, and the \fBappend\fR form appends one or more +windows to the end of the packing order for \fIparent\fR. If a +\fIwindow\fR named in any of these commands is already packed in +its parent, it is removed from its current position in the packing +order and repositioned as indicated by the command. All of these +commands return an empty string as result. +.PP +The \fBunpack\fR form of the \fBpack\fR command removes \fIwindow\fR +from the packing order of its parent and unmaps it. After the +execution of this command the packer will no longer manage +\fIwindow\fR's geometry. +.PP +The placement of each child is actually a four-step process; +the \fIoptions\fR argument following each \fIwindow\fR consists of +a list of one or more fields that govern the placement of that +window. In the discussion below, the term \fIcavity\fR refers +to the space left in a parent when a particular child is placed +(i.e. all the space that wasn't claimed by earlier children in +the packing order). The term \fIparcel\fR refers to the space +allocated to a particular child; this is not necessarily the +same as the child window's final geometry. +.PP +The first step in 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: +.TP +\fBtop\fR +Position the child's parcel against the top of the cavity, +occupying the full width of the cavity. +.TP +\fBbottom\fR +Position the child's parcel against the bottom of the cavity, +occupying the full width of the cavity. +.TP +\fBleft\fR +Position the child's parcel against the left side of the cavity, +occupying the full height of the cavity. +.TP +\fBright\fR +Position the child's parcel against the right side of the cavity, +occupying the full height of the cavity. +.LP +At most one of these options should be specified for any given window. +If no side is specified, then the default is \fBtop\fR. +.PP +The second step is to decide on a parcel for the child. For \fBtop\fR +and \fBbottom\fR windows, the desired parcel width is normally the cavity +width and the desired parcel height is the window's requested height, +as passed to \fBTk_GeometryRequest\fR. For \fBleft\fR and \fBright\fR +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: +.TP 12 +\fBpadx \fInum\fR +Add \fInum\fR pixels to the window's requested width before computing +the parcel size as described above. +.TP 12 +\fBpady \fInum\fR +Add \fInum\fR pixels to the window's requested height before computing +the parcel size as described above. +.TP 12 +\fBexpand\fR +This option requests that the window's parcel absorb any extra space left over +in 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 +\fBexpand\fR then the extra width will be divided equally among all the +\fBleft\fR and \fBright\fR windows that specified \fBexpand\fR and +the extra height will be divided equally among all the \fBtop\fR and +\fBbottom\fR windows that specified \fBexpand\fR. +.LP +If the desired width or height for a parcel is larger than the corresponding +dimension of the cavity, then the cavity's dimension is used instead. +.PP +The third step in 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 partially or completely fill the parcel: +.TP +\fBfill\fR +Set the window's size to equal the parcel size. +.TP +\fBfillx\fR +Increase the window's width to equal the parcel's width, but retain +the window's requested height. +.TP +\fBfilly\fR +Increase the window's height to equal the parcel's height, but retain +the window's requested width. +.PP +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: +.TP 15 +\fBframe center\fR +Center the window in its parcel. This is the default if no framing +option is specified. +.TP 15 +\fBframe n\fR +Position the window with its top edge centered on the top edge of +the parcel. +.TP 15 +\fBframe ne\fR +Position the window with its upper-right corner at the upper-right corner +of the parcel. +.TP 15 +\fBframe e\fR +Position the window with its right edge centered on the right edge of +the parcel. +.TP 15 +\fBframe se\fR +Position the window with its lower-right corner at the lower-right corner +of the parcel. +.TP 15 +\fBframe s\fR +Position the window with its bottom edge centered on the bottom edge of +the parcel. +.TP 15 +\fBframe sw\fR +Position the window with its lower-left corner at the lower-left corner +of the parcel. +.TP 15 +\fBframe w\fR +Position the window with its left edge centered on the left edge of +the parcel. +.TP 15 +\fBframe nw\fR +Position the window with its upper-left corner at the upper-left corner +of the parcel. +.PP +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 the cavity. +.PP +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 \fBexpand\fR options. + +.SH KEYWORDS +geometry manager, location, packer, parcel, size |