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Import Tk 8.6.11

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Steve Dower
2021-03-30 00:54:10 +01:00
parent 42c69189d9
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@@ -3,7 +3,7 @@
'\"
'\" See the file "license.terms" for information on usage and redistribution
'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
'\"
'\"
.TH grid n 8.5 Tk "Tk Built-In Commands"
.so man.macros
.BS
@@ -17,30 +17,30 @@ grid \- Geometry manager that arranges widgets in a grid
.PP
The \fBgrid\fR command is used to communicate with the grid
geometry manager that arranges widgets in rows and columns inside
of another window, called the geometry master (or master window).
of another window, called the geometry container (or container window).
The \fBgrid\fR command can have any of several forms, depending
on the \fIoption\fR argument:
.TP
\fBgrid \fIslave \fR?\fIslave ...\fR? ?\fIoptions\fR?
\fBgrid \fIwindow \fR?\fIwindow ...\fR? ?\fIoptions\fR?
.
If the first argument to \fBgrid\fR is suitable as the first slave
If the first argument to \fBgrid\fR is suitable as the first window
argument to \fBgrid configure\fR, either a window name (any value
starting with \fB.\fR) or one of the characters \fBx\fR or \fB^\fR
(see the \fBRELATIVE PLACEMENT\fR section below), then the command is
processed in the same way as \fBgrid configure\fR.
.TP
\fBgrid anchor \fImaster\fR ?\fIanchor\fR?
\fBgrid anchor \fIwindow\fR ?\fIanchor\fR?
.
The anchor value controls how to place the grid within the master
The anchor value controls how to place the grid within the container window
when no row/column has any weight. See \fBTHE GRID ALGORITHM\fR below
for further details. The default \fIanchor\fR is \fInw\fR.
.TP
\fBgrid bbox \fImaster\fR ?\fIcolumn row\fR? ?\fIcolumn2 row2\fR?
\fBgrid bbox \fIwindow\fR ?\fIcolumn row\fR? ?\fIcolumn2 row2\fR?
.
With no arguments,
the bounding box (in pixels) of the grid is returned.
The return value consists of 4 integers. The first two are the pixel
offset from the master window (x then y) of the top-left corner of the
offset from the container window (x then y) of the top-left corner of the
grid, and the second two integers are the width and height of the grid,
also in pixels. If a single \fIcolumn\fR and \fIrow\fR is specified on
the command line, then the bounding box for that cell is returned, where the
@@ -48,18 +48,18 @@ top left cell is numbered from zero. If both \fIcolumn\fR and \fIrow\fR
arguments are specified, then the bounding box spanning the rows and columns
indicated is returned.
.TP
\fBgrid columnconfigure \fImaster index \fR?\fI\-option value...\fR?
\fBgrid columnconfigure \fIwindow index \fR?\fI\-option value...\fR?
.
Query or set the column properties of the \fIindex\fR column of the
geometry master, \fImaster\fR.
geometry container, \fIwindow\fR.
The valid options are \fB\-minsize\fR, \fB\-weight\fR, \fB\-uniform\fR
and \fB\-pad\fR.
If one or more options are provided, then \fIindex\fR may be given as
a list of column indices to which the configuration options will operate on.
Indices may be integers, window names or the keyword \fIall\fR. For \fIall\fR
the options apply to all columns currently occupied be slave windows. For
a window name, that window must be a slave of this master and the options
apply to all columns currently occupied be the slave.
the options apply to all columns currently occupied be content windows. For
a window name, that window must be a content of this container and the options
apply to all columns currently occupied be the content.
The \fB\-minsize\fR option sets the minimum size, in screen units,
that will be permitted for this column.
The \fB\-weight\fR option (an integer value)
@@ -80,170 +80,170 @@ added to the largest window contained completely in that column when the
grid geometry manager requests a size from the containing window.
If only an option is specified, with no value,
the current value of that option is returned.
If only the master window and index is specified, all the current settings
If only the container window and index is specified, all the current settings
are returned in a list of
.QW "\-option value"
pairs.
.TP
\fBgrid configure \fIslave \fR?\fIslave ...\fR? ?\fIoptions\fR?
\fBgrid configure \fIwindow \fR?\fIwindow ...\fR? ?\fIoptions\fR?
.
The arguments consist of the names of one or more slave windows
The arguments consist of the names of one or more content windows
followed by pairs of arguments that specify how
to manage the slaves.
to manage the content.
The characters \fB\-\fR, \fBx\fR and \fB^\fR,
can be specified instead of a window name to alter the default
location of a \fIslave\fR, as described in the \fBRELATIVE PLACEMENT\fR
location of a \fIwindow\fR, as described in the \fBRELATIVE PLACEMENT\fR
section, below.
The following options are supported:
.RS
.TP
\fB\-column \fIn\fR
.
Insert the slave so that it occupies the \fIn\fRth column in the grid.
Insert the window so that it occupies the \fIn\fRth column in the grid.
Column numbers start with 0. If this option is not supplied, then the
slave is arranged just to the right of previous slave specified on this
window is arranged just to the right of previous window specified on this
call to \fBgrid\fR, or column
.QW 0
if it is the first slave. For each
\fBx\fR that immediately precedes the \fIslave\fR, the column position
if it is the first window. For each
\fBx\fR that immediately precedes the \fIwindow\fR, the column position
is incremented by one. Thus the \fBx\fR represents a blank column
for this row in the grid.
.TP
\fB\-columnspan \fIn\fR
.
Insert the slave so that it occupies \fIn\fR columns in the grid.
Insert the window so that it occupies \fIn\fR columns in the grid.
The default is one column, unless the window name is followed by a
\fB\-\fR, in which case the columnspan is incremented once for each immediately
following \fB\-\fR.
.TP
\fB\-in \fIother\fR
\fB\-in \fIcontainer\fR
.
Insert the slave(s) in the master
window given by \fIother\fR. The default is the first slave's
Insert the window(s) in the container
window given by \fIcontainer\fR. The default is the first window's
parent window.
.TP
\fB\-ipadx \fIamount\fR
.
The \fIamount\fR specifies how much horizontal internal padding to
leave on each side of the slave(s). This is space is added
inside the slave(s) border.
leave on each side of the content. This is space is added
inside the content border.
The \fIamount\fR must be a valid screen distance, such as \fB2\fR or \fB.5c\fR.
It defaults to 0.
.TP
\fB\-ipady \fIamount\fR
.
The \fIamount\fR specifies how much vertical internal padding to
leave on the top and bottom of the slave(s).
This space is added inside the slave(s) border.
leave on the top and bottom of the content.
This space is added inside the content border.
The \fIamount\fR defaults to 0.
.TP
\fB\-padx \fIamount\fR
.
The \fIamount\fR specifies how much horizontal external padding to
leave on each side of the slave(s), in screen units.
leave on each side of the content, in screen units.
\fIAmount\fR may be a list
of two values to specify padding for left and right separately.
The \fIamount\fR defaults to 0.
This space is added outside the slave(s) border.
This space is added outside the content border.
.TP
\fB\-pady \fIamount\fR
.
The \fIamount\fR specifies how much vertical external padding to
leave on the top and bottom of the slave(s), in screen units.
leave on the top and bottom of the content, in screen units.
\fIAmount\fR may be a list
of two values to specify padding for top and bottom separately.
The \fIamount\fR defaults to 0.
This space is added outside the slave(s) border.
This space is added outside the content border.
.TP
\fB\-row \fIn\fR
.
Insert the slave so that it occupies the \fIn\fRth row in the grid.
Insert the content so that it occupies the \fIn\fRth row in the grid.
Row numbers start with 0. If this option is not supplied, then the
slave is arranged on the same row as the previous slave specified on this
content is arranged on the same row as the previous content specified on this
call to \fBgrid\fR, or the next row after the highest occupied row
if this is the first slave.
if this is the first content.
.TP
\fB\-rowspan \fIn\fR
.
Insert the slave so that it occupies \fIn\fR rows in the grid.
Insert the content so that it occupies \fIn\fR rows in the grid.
The default is one row. If the next \fBgrid\fR command contains
\fB^\fR characters instead of \fIslaves\fR that line up with the columns
of this \fIslave\fR, then the \fBrowspan\fR of this \fIslave\fR is
\fB^\fR characters instead of \fIcontent\fR that line up with the columns
of this \fIcontent\fR, then the \fBrowspan\fR of this \fIcontent\fR is
extended by one.
.TP
\fB\-sticky \fIstyle\fR
.
If a slave's cell is larger than its requested dimensions, this
option may be used to position (or stretch) the slave within its cell.
If a content's cell is larger than its requested dimensions, this
option may be used to position (or stretch) the content within its cell.
\fIStyle\fR is a string that contains zero or more of the characters
\fBn\fR, \fBs\fR, \fBe\fR or \fBw\fR.
The string can optionally contains spaces or
commas, but they are ignored. Each letter refers to a side (north, south,
east, or west) that the slave will
east, or west) that the content will
.QW stick
to. If both \fBn\fR and \fBs\fR (or \fBe\fR and \fBw\fR) are
specified, the slave will be stretched to fill the entire
specified, the content will be stretched to fill the entire
height (or width) of its cavity. The \fB\-sticky\fR option subsumes the
combination of \fB\-anchor\fR and \fB\-fill\fR that is used by \fBpack\fR.
The default is
.QW "" ,
which causes the slave to be centered in its cavity, at its requested size.
which causes the content to be centered in its cavity, at its requested size.
.LP
If any of the slaves are already managed by the geometry manager
If any of the content is already managed by the geometry manager
then any unspecified options for them retain their previous values rather
than receiving default values.
.RE
.TP
\fBgrid forget \fIslave \fR?\fIslave ...\fR?
\fBgrid forget \fIwindow \fR?\fIwindow ...\fR?
.
Removes each of the \fIslave\fRs from grid for its
master and unmaps their windows.
The slaves will no longer be managed by the grid geometry manager.
Removes each of the \fIwindow\fRs from grid for its
container and unmaps their windows.
The content will no longer be managed by the grid geometry manager.
The configuration options for that window are forgotten, so that if the
slave is managed once more by the grid geometry manager, the initial
window is managed once more by the grid geometry manager, the initial
default settings are used.
.TP
\fBgrid info \fIslave\fR
\fBgrid info \fIwindow\fR
.
Returns a list whose elements are the current configuration state of
the slave given by \fIslave\fR in the same option-value form that
the content given by \fIwindow\fR in the same option-value form that
might be specified to \fBgrid configure\fR.
The first two elements of the list are
.QW "\fB\-in \fImaster\fR"
where \fImaster\fR is the slave's master.
.QW "\fB\-in \fIcontainer\fR"
where \fIcontainer\fR is the windows's container window.
.TP
\fBgrid location \fImaster x y\fR
\fBgrid location \fIwindow x y\fR
.
Given \fIx\fR and \fIy\fR values in screen units relative to the master window,
Given \fIx\fR and \fIy\fR values in screen units relative to the container window,
the column and row number at that \fIx\fR and \fIy\fR location is returned.
For locations that are above or to the left of the grid, \fB\-1\fR is
returned.
.TP
\fBgrid propagate \fImaster\fR ?\fIboolean\fR?
\fBgrid propagate \fIwindow\fR ?\fIboolean\fR?
.
If \fIboolean\fR has a true boolean value such as \fB1\fR or \fBon\fR
then propagation is enabled for \fImaster\fR, which must be a window
then propagation is enabled for \fIwindow\fR, which must be a window
name (see \fBGEOMETRY PROPAGATION\fR below).
If \fIboolean\fR has a false boolean value then propagation is
disabled for \fImaster\fR.
disabled for \fIwindow\fR.
In either of these cases an empty string is returned.
If \fIboolean\fR is omitted then the command returns \fB0\fR or
\fB1\fR to indicate whether propagation is currently enabled
for \fImaster\fR.
for \fIwindow\fR.
Propagation is enabled by default.
.TP
\fBgrid rowconfigure \fImaster index \fR?\fI\-option value...\fR?
\fBgrid rowconfigure \fIwindow index \fR?\fI\-option value...\fR?
.
Query or set the row properties of the \fIindex\fR row of the
geometry master, \fImaster\fR.
geometry window, \fIwindow\fR.
The valid options are \fB\-minsize\fR, \fB\-weight\fR, \fB\-uniform\fR
and \fB\-pad\fR.
If one or more options are provided, then \fIindex\fR may be given as
a list of row indices to which the configuration options will operate on.
Indices may be integers, window names or the keyword \fIall\fR. For \fIall\fR
the options apply to all rows currently occupied be slave windows. For
a window name, that window must be a slave of this master and the options
apply to all rows currently occupied be the slave.
the options apply to all rows currently occupied by content windows. For
a window name, that window must be a content window of this container and the options
apply to all rows currently occupied by the container window.
The \fB\-minsize\fR option sets the minimum size, in screen units,
that will be permitted for this row.
The \fB\-weight\fR option (an integer value)
@@ -264,91 +264,96 @@ added to the largest window contained completely in that row when the
grid geometry manager requests a size from the containing window.
If only an option is specified, with no value,
the current value of that option is returned.
If only the master window and index is specified, all the current settings
If only the container window and index is specified, all the current settings
are returned in a list of
.QW "-option value"
pairs.
.TP
\fBgrid remove \fIslave \fR?\fIslave ...\fR?
\fBgrid remove \fIwindow \fR?\fIwindow ...\fR?
.
Removes each of the \fIslave\fRs from grid for its
master and unmaps their windows.
The slaves will no longer be managed by the grid geometry manager.
Removes each of the \fIwindow\fRs from grid for its
container and unmaps their windows.
The content will no longer be managed by the grid geometry manager.
However, the configuration options for that window are remembered,
so that if the
slave is managed once more by the grid geometry manager, the previous
values are retained.
so that if the content window is managed once more by the grid
geometry manager, the previous values are retained.
.TP
\fBgrid size \fImaster\fR
\fBgrid size \fIcontainer\fR
.
Returns the size of the grid (in columns then rows) for \fImaster\fR.
The size is determined either by the \fIslave\fR occupying the largest
Returns the size of the grid (in columns then rows) for \fIcontainer\fR.
The size is determined either by the \fIcontent\fR occupying the largest
row or column, or the largest column or row with a \fB\-minsize\fR,
\fB\-weight\fR, or \fB\-pad\fR that is non-zero.
.TP
\fBgrid slaves \fImaster\fR ?\fI\-option value\fR?
\fBgrid slaves \fIwindow\fR ?\fI\-option value\fR?
.
If no options are supplied, a list of all of the slaves in \fImaster\fR
are returned, most recently manages first.
If no options are supplied, a list of all of the content in \fIwindow\fR
are returned, most recently managed first.
\fIOption\fR can be either \fB\-row\fR or \fB\-column\fR which
causes only the slaves in the row (or column) specified by \fIvalue\fR
causes only the content in the row (or column) specified by \fIvalue\fR
to be returned.
.VS "TIP 581"
.TP
\fBgrid content \fIwindow\fR ?\fI\-option value\fR?
.
Synonym for . \fBgrid slaves \fIwindow\fR ?\fI\-option value\fR?
.VE "TIP 581"
.SH "RELATIVE PLACEMENT"
.PP
The \fBgrid\fR command contains a limited set of capabilities that
permit layouts to be created without specifying the row and column
information for each slave. This permits slaves to be rearranged,
information for each content. This permits content to be rearranged,
added, or removed without the need to explicitly specify row and
column information.
When no column or row information is specified for a \fIslave\fR,
When no column or row information is specified for a \fIcontent\fR,
default values are chosen for
\fB\-column\fR, \fB\-row\fR, \fB\-columnspan\fR and \fB\-rowspan\fR
at the time the \fIslave\fR is managed. The values are chosen
based upon the current layout of the grid, the position of the \fIslave\fR
relative to other \fIslave\fRs in the same grid command, and the presence
at the time the \fIcontent\fR is managed. The values are chosen
based upon the current layout of the grid, the position of the \fIcontent\fR
relative to other \fIcontent\fRs in the same grid command, and the presence
of the characters \fB\-\fR, \fBx\fR, and \fB^\fR in \fBgrid\fR
command where \fIslave\fR names are normally expected.
command where \fIcontent\fR names are normally expected.
.RS
.TP
\fB\-\fR
.
This increases the \fB\-columnspan\fR of the \fIslave\fR to the left. Several
This increases the \fB\-columnspan\fR of the \fIcontent\fR to the left. Several
\fB\-\fR's in a row will successively increase the number of columns spanned. A \fB\-\fR
may not follow a \fB^\fR or a \fBx\fR, nor may it be the first \fIslave\fR
may not follow a \fB^\fR or a \fBx\fR, nor may it be the first \fIcontent\fR
argument to \fBgrid configure\fR.
.TP
\fBx\fR
.
This leaves an empty column between the \fIslave\fR on the left and
the \fIslave\fR on the right.
This leaves an empty column between the \fIcontent\fR on the left and
the \fIcontent\fR on the right.
.TP
\fB^\fR
.
This extends the \fB\-rowspan\fR of the \fIslave\fR above the \fB^\fR's
This extends the \fB\-rowspan\fR of the \fIcontent\fR above the \fB^\fR's
in the grid. The number of \fB^\fR's in a row must match the number of
columns spanned by the \fIslave\fR above it.
columns spanned by the \fIcontent\fR above it.
.RE
.SH "THE GRID ALGORITHM"
.PP
The grid geometry manager lays out its slaves in three steps.
In the first step, the minimum size needed to fit all of the slaves
The grid geometry manager lays out its content in three steps.
In the first step, the minimum size needed to fit all of the content
is computed, then (if propagation is turned on), a request is made
of the master window to become that size.
of the container window to become that size.
In the second step, the requested size is compared against the actual size
of the master. If the sizes are different, then spaces is added to or taken
of the container. If the sizes are different, then spaces is added to or taken
away from the layout as needed.
For the final step, each slave is positioned in its row(s) and column(s)
For the final step, each content is positioned in its row(s) and column(s)
based on the setting of its \fIsticky\fR flag.
.PP
To compute the minimum size of a layout, the grid geometry manager
first looks at all slaves whose \fB\-columnspan\fR and \fB\-rowspan\fR values are one,
first looks at all content whose \fB\-columnspan\fR and \fB\-rowspan\fR values are one,
and computes the nominal size of each row or column to be either the
\fIminsize\fR for that row or column, or the sum of the \fIpad\fRding
plus the size of the largest slave, whichever is greater. After that
plus the size of the largest content, whichever is greater. After that
the rows or columns in each uniform group adapt to each other. Then
the slaves whose row-spans or column-spans are greater than one are
the content whose row-spans or column-spans are greater than one are
examined. If a group of rows or columns need to be increased in size
in order to accommodate these slaves, then extra space is added to each
in order to accommodate these content, then extra space is added to each
row or column in the group according to its \fIweight\fR. For each
group whose weights are all zero, the additional space is apportioned
equally.
@@ -369,11 +374,11 @@ minimum size. For example, if all rows or columns in a group have the
same weight, then each row or column will have the same size as the
largest row or column in the group.
.PP
For masters whose size is larger than the requested layout, the additional
For containers whose size is larger than the requested layout, the additional
space is apportioned according to the row and column weights. If all of
the weights are zero, the layout is placed within its master according to
the weights are zero, the layout is placed within its container according to
the \fIanchor\fR value.
For masters whose size is smaller than the requested layout, space is taken
For containers whose size is smaller than the requested layout, space is taken
away from columns and rows according to their weights. However, once a
column or row shrinks to its minsize, its weight is taken to be zero.
If more space needs to be removed from a layout than would be permitted, as
@@ -381,34 +386,34 @@ when all the rows or columns are at their minimum sizes, the layout is
placed and clipped according to the \fIanchor\fR value.
.SH "GEOMETRY PROPAGATION"
.PP
The grid geometry manager normally computes how large a master must be to
just exactly meet the needs of its slaves, and it sets the
requested width and height of the master to these dimensions.
The grid geometry manager normally computes how large a container must be to
just exactly meet the needs of its content, and it sets the
requested width and height of the container to these dimensions.
This causes geometry information to propagate up through a
window hierarchy to a top-level window so that the entire
sub-tree sizes itself to fit the needs of the leaf windows.
However, the \fBgrid propagate\fR command may be used to
turn off propagation for one or more masters.
turn off propagation for one or more containers.
If propagation is disabled then grid will not set
the requested width and height of the master window.
This may be useful if, for example, you wish for a master
the requested width and height of the container window.
This may be useful if, for example, you wish for a container
window to have a fixed size that you specify.
.SH "RESTRICTIONS ON MASTER WINDOWS"
.SH "RESTRICTIONS ON CONTAINER WINDOWS"
.PP
The master for each slave must either be the slave's parent
(the default) or a descendant of the slave's parent.
The container for each content must either be the content's parent
(the default) or a descendant of the content's parent.
This restriction is necessary to guarantee that the
slave can be placed over any part of its master that is
visible without danger of the slave being clipped by its parent.
In addition, all slaves in one call to \fBgrid\fR must have the same master.
content can be placed over any part of its container that is
visible without danger of the content being clipped by its parent.
In addition, all content in one call to \fBgrid\fR must have the same container.
.SH "STACKING ORDER"
.PP
If the master for a slave is not its parent then you must make sure
that the slave is higher in the stacking order than the master.
Otherwise the master will obscure the slave and it will appear as
if the slave has not been managed correctly.
The easiest way to make sure the slave is higher than the master is
to create the master window first: the most recently created window
If the container for a content is not its parent then you must make sure
that the content is higher in the stacking order than the container.
Otherwise the container will obscure the content and it will appear as
if the content has not been managed correctly.
The easiest way to make sure the content is higher than the container is
to create the container window first: the most recently created window
will be highest in the stacking order.
.SH CREDITS
.PP