tablematrix(3)

NAME

TableMatrix - Create and manipulate tables

Synopsis

$table = $parent->TableMatrix(?options?);

STANDARD OPTIONS

-anchor -background -cursor: -exportselection -font -foreground -highlightback
ground -highlightcolor: -highlightthickness -insertbackground -insertborder
width -insertofftime: -insertontime -insertwidth -invertselected -padx
-pady -relief -takefocus: -xscrollcommand -yscrollcommand

Widget-specific Options

Switch: -autoclear
Name: autoClear
Class: AutoClear: A boolean value which specifies whether the first key
press in a cell will delete whatever text was previously
there. Defaults to 0.
Switch: -bordercursor
Name: borderCursor
Class: Cursor: Specifies the name of the cursor to show when over bor
ders, a visual indication that interactive resizing is
allowed (it is thus affect by the value of -resizebor
ders). Defaults to crosshair .
Switch: -borderwidth or -bd
Name: borderWidth
Class: BorderWidth: Specifies a non-negative value indicating the width of
the 3-D border to draw on interior table cells (if such a
border is being drawn; the relief option typically
determines this). This can be overridden by the a tag's
borderwidth option. It can also be affected by the
defined -drawmode for the table. The value may have any of the forms acceptable to Tk_GetPixels.
Switch: -browsecommand or -browsecmd Name: browseCommand
Class: BrowseCommand: Specifies a command (callback) which will be evaluated
anytime the active cell changes. The Previous Index and
the Current index is passed to this command as arguments.
Switch: -cache
Name: cache
Class: Cache: A boolean value that specifies whether an internal cache
of the table contents should be kept. This greatly
enhances speed performance when used with -command but uses extra memory. Can maintain state when both -command and -variable are empty. The cache is automatically flushed whenever the value of -cache or -variable changes, otherwise you have to explicitly flush it.
Defaults to false.
Switch: -colorigin
Name: colOrigin
Class: Origin: Specifies what column index to interpret as the leftmost
column in the table. This value is used for user indices
in the table. Defaults to 0.
Switch: -cols
Name: cols
Class: Cols: Number of cols in the table. Defaults to 10.
Switch: -colseparator
Name: colSeparator
Class: Separator: Specifies a separator character that will be interpreted
as the column separator when cutting or pasting data in a
table. By default, columns are separated as elements of
a tcl list.
Switch: -colstretchmode
Name: colStretchMode
Class: StretchMode: Specifies one of the following stretch modes for columns
to fill extra allocated window space:
none: Columns will not stretch to fill the assigned window
space. If the columns are too narrow, there will be a
blank space at the right of the table. This is the
default.
unset: Only columns that do not have a specific width set will
be stretched.
all: All columns will be stretched by the same number of pix
els to fill the window space allocated to the table.
This mode can interfere with interactive border resizing
which tries to force column width.
last: The last column will be stretched to fill the window
space allocated to the table.
fill: (only valid for -rowstretch currently); The table will get more or less columns according to the
window space allocated to the table. This mode has
numerous quirks and may disappear in the future.
Switch: -coltagcommand
Name: colTagCommand
Class: TagCommand: Provides the name of a procedure that will be evaluated
by the widget to determine the tag to be used for a given
column. When displaying a cell, the table widget will
first check to see if a tag has been defined using the
tag col widget method. If no tag is found, it will
evaluate the named procedure passing the column number in
question as the sole argument. The procedure is expected
to return the name of a tag to use, or a null string.
Errors occuring during the evaluation of the procedure,
or the return of an invalid tag name are silently
ignored.; The Current column number is passed as an argument to the
col command.
Switch: -colwidth
Name: colWidth
Class: ColWidth: Default column width, interpreted as characters in the
default font when the number is positive, or pixels if it
is negative. Defaults to 10.
Switch: -command
Name: command
Class: Command: Specified a command to use as a procedural interface to
cell values. If -usecommand is true, this command will be used instead of any reference to the -variable array. When retrieving cell values, the return value of the com
mand is used as the value for the cell.; Args passed to this callback: The Set Flag (=1 if set
ting, else retrieving), the current row, the current col,
the cell value (if setting).
Switch: -drawmode
Name: drawMode
Class: DrawMode: Sets the table drawing mode to one of the following
options:
slow: The table is drawn to an offscreen pixmap using the Tk
bordering functions (double-buffering). This means
there will be no flashing, but this mode is slow for
larger tables.
compatible: The table is drawn directly to the screen using the Tk
border functions. It is faster, but the screen may flash
on update. This is the default.
fast: The table is drawn directly to the screen and the bor
ders are done with fast X calls, so they are always one
pixel wide only. As a side effect, it restricts -bor
derwidth to a range of 0 or 1. This mode provides best performance for large tables, but can flash on redraw
and is not 100% Tk compatible on the border mode.
single: The table is drawn to the screen as in fast mode, but
only single pixel lines are drawn (not square borders).
Switch: -flashmode
Name: flashMode
Class: FlashMode: A boolean value which specifies whether cells should
flash when their value changes. The table tag flash
will be applied to these cells for the duration specified
by -flashtime . Defaults to 0.
Switch: -flashtime
Name: flashTime
Class: FlashTime: The amount of time, in 1/4 second increments, for which a
cell should flash when its value has changed. -flashmode must be on. Defaults to 2.
Switch: -height
Name: height
Class: Height: Specifies the desired height for the window, in rows. If
zero or less, then the desired height for the window is
made just large enough to hold all the rows in the table.
The height can be further limited by -maxheight .
Switch: -invertselected
Name: invertSelected
Class: InvertSelected: Specifies whether the foreground and background of an
item should simply have their values swapped instead of
merging the sel tag options when the cell is selected.
Defaults to 0 (merge).
Switch: -maxheight
Name: maxHeight
Class: MaxHeight: The max height in pixels that the window will request.
Defaults to 600.
Switch: -maxwidth
Name: maxWidth
Class: MaxWidth: The max width in pixels that the window will request.
Defaults to 800.
Switch: -multiline
Name: multiline
Class: Multiline: Specifies the default setting for the multiline tag
option. Defaults to 1.
Switch: -resizeborders
Name: resizeBorders
Class: ResizeBorders: Specifies what kind of interactive border resizing to
allow, must be one of row, col, both (default) or none.
Switch: -rowheight
Name: rowHeight
Class:: RowHeight Default row height, interpreted as lines in the default font when the number is positive, or pixels
if it is negative. Defaults to 1.
Switch: -roworigin
Name: rowOrigin
Class: Origin: Specifies what row index to interpret as the topmost row
in the table. This value is used for user indices in the
table. Defaults to 0.
Switch: -rows
Name: rows
Class: Rows: Number of rows in the table. Defaults to 10.
Switch: -rowseparator
Name: rowSeparator
Class: Separator: Specifies a separator character that will be interpreted
as the row separator when cutting or pasting data in a
table. By default, rows are separated as tcl lists.
Switch: -rowstretchmode
Name: rowStretchMode
Class: StretchMode: Specifies the stretch modes for rows to fill extra allo
cated window space. See -colstretchmode for valid options.
Switch: -rowtagcommand
Name: rowTagCommand
Class: TagCommand: Provides the name of a procedure that can evaluated by
the widget to determine the tag to be used for a given
row. The procedure must be defined by the user to accept
a single argument (the row number), and return a tag name
or null string. This operates in a similar manner as
-coltagcommand , except that it applies to row tags.; The Current row number is passed as an argument to the
row command.
Switch: -selectioncommand or -selcmd Name: selectionCommand
Class: SelectionCommand: Specifies a command (callback) to evaluate when the
selection is retrieved from a table via the selection
mechanism (ie: evaluating "selection get "). The return value from this command will become the string passed on
by the selection mechanism. The following arguments are
passed to this callback: The number of rows in the selec
tion, number of columns in the selection, the selection
string, the number of cell in the selection.
Switch: -selectmode
Name: selectMode
Class: SelectMode: Specifies one of several styles for manipulating the
selection. The value of the option may be arbitrary, but
the default bindings expect it to be either single ,
browse , multiple , or extended ; the default value is browse . These styles are like those for the Tk listbox, except expanded for 2 dimensions.
Switch: -selecttitle
Name: selectTitles
Class: SelectTitles: Specifies whether title cells should be allowed in the
selection. Defaults to 0 (disallowed).
Switch: -selecttype
Name: selectType
Class: SelectType: Specifies one of several types of selection for the
table. The value of the option may be one of row , col , cell , or both (meaning row && col ); the default value is cell . These types define whether an entire row/col
is affected when a cell's selection is changed (set or
clear).
Switch: -sparsearray
Name: sparseArray
Class: SparseArray: A boolean value that specifies whether an associated Tcl
array should be kept as a sparse array (1, the default)
or as a full array (0). If true, then cell values that
are empty will be deleted from the array (taking less
memory). If false, then all values in the array will be
maintained.
Switch: -state
Name: state
Class: State: Specifies one of two states for the entry: normal or
disabled. If the table is disabled then the value may not be changed using widget commands and no insertion
cursor will be displayed, even if the input focus is in
the widget. Also, all insert or delete methods will be
ignored. Defaults to normal .
Switch: -titlecols
Name: titleCols
Class: TitleCols: Number of columns to use as a title area. Defaults to 0.
Switch: -titlerows
Name: titleRows
Class: TitleRows: Number of rows to use as a title area. Defaults to 0.
Switch: -usecommand
Name: useCommand
Class: UseCommand: A boolean value which specifies whether to use the com
mand option. This value sets itself to zero if command is used and returns an error. Defaults to 1 (will use
command if specified).
Switch: -validate
Name: validate
Class: Validate: A boolean specifying whether validation should occur for
the active buffer. Defaults to 0.
Switch: -validatecommand or -vcmd Name: validateCommand
Class: ValidateCommand: Specifies a command (callback) to execute when the active
cell is edited. This command is expected to return a 1
or 0. If it returns 1, then it is assumed the new value
is OK, otherwise the new value is rejected (the edition
will not take place). Errors in this command are handled
in the background. The following arguments are supplied
to the callback: row, col, oldContents of cell, potential
new contents of cell, Current Index in the cell.
Switch: -variable
Name: variable
Class: Variable: Global Tcl array variable to attach to the table's C
array. It will be created if it doesn't already exist or
is a simple variable. Keys used by the table in the
array are of the form row ,col for cells and the special key active which contains the value of the active cell
buffer. The Tcl array is managed as a sparse array (the
table doesn't require all valid indices have values). No
stored value for an index is equivalent to the empty
string, and clearing a cell will remove that index from
the Tcl array, unless the -sparsearray options is set to 0.
Switch: -width
Name: width
Class: Width: Specifies the desired width for the window, in columns.
If zero or less, then the desired width for the window is
made just large enough to hold all the columns in the
table. The width can be further limited by -maxwidth .
Switch: -wrap
Name: wrap
Class: Wrap: Specifies the default wrap value for tags. Defaults to
0.

DESCRIPTION

The TableMatrix command creates a 2-dimensional grid of cells. The table can use a Tcl array variable or Tcl com
mand for data storage and retrieval. The widget has an
active cell, the contents of which can be edited (when the
state is normal). The widget supports a default style for
the cells and also multiple tags , which can be used to
change the style of a row, column or cell (see TAGS for
details). A cell flash can be set up so that changed
cells will change color for a specified amount of time
("blink").: Cells can have embedded images or windows, as described
in Tags and "Embedded Windows" respectively.
One or more cells may be selected as described below.: If a table is exporting its selection (see -exportselec
tion option), then it will observe the standard X11 pro
tocols for handling the selection.: See "the Selection" for details. It is not necessary for
all the cells to be displayed in the table window at once;
commands described below may be used to change the view in
the window. Tables allow scrolling in both directions
using the standard -xscrollcommand and -yscrollcommand options.: They also support scanning, as described below.
In order to obtain good performance, the table widget sup ports multiple drawing modes, two of which are fully Tk compatible.

Indices

Many of the widget commands for tables take one or more
indices as arguments. An index specifies a particular cell
of the table, in any of the following ways:

number,number: Specifies the cell as a numerical index of row,col which
corresponds to the index of the associated Tcl array,
where -roworigin,-colorigin corresponds to the first cell in the table (0,0 by default).
active: Indicates the cell that has the location cursor. It is
specified with the activate widget command.
anchor: Indicates the anchor point for the selection, which is
set with the selection anchor widget command.
bottomright: Indicates the bottom-rightmost cell visible in the table.
end: Indicates the bottom right cell of the table.
origin: Indicates the top-leftmost editable cell of the table,
not necessarily in the display. This takes into account
the user specified origin and title area.
topleft: Indicates the top-leftmost editable cell visible in the
table (this excludes title cells).
@x,y: Indicates the cell that covers the point in the table
window specified by x and y (in pixel coordinates). If
no cell covers that point, then the closest cell to that
point is used. In the widget command descriptions below,
arguments named index , first , and last always contain text indices in one of the above forms.

Embedded Windows

There may be any number of embedded windows in a table
widget (one per cell), and any widget may be used as an
embedded window (subject to the usual rules for geometry
management, which require the table window to be the par
ent of the embedded window or a descendant of its parent).
The embedded window's position on the screen will be
updated as the table is modified or scrolled, and it will
be mapped and unmapped as it moves into and out of the
visible area of the table widget. Each embedded window
occupies one cell's worth of space in the table widget,
and it is referred to by the index of the cell in the
table. Windows associated with the table widget are
destroyed when the table widget is destroyed.

Windows are used for display purposes only. A value still
exists for that cell, but will not be shown unless the
window is deleted in some way. If the window is destroyed
or lost by the table widget to another geometry manager,
then any data associated with it is lost (the cell it
occupied will no longer appear in window names ).

When an embedded window is added to a table widget with
the window configure widget command, several configuration
options may be associated with it. These options may be
modified with later calls to the window configure widget
command. The following options are currently supported:

-create callback: NOT CURRENTLY SUPPORTED. Specifies a Tcl script that may
be evaluated to create the window for the annotation.
If no -window option has been specified for this cell; then this script will be evaluated when the cell is about
to be displayed on the screen.
Script must create a window for the cell and return the; name of that window as its result. If the cell's window
should ever be deleted, the script will be evaluated
again the next time the cell is displayed.
-background or -bg color: Background color of the cell. If not specified, it uses
the table's default background.
-padx pixels: As defined in the Tk options man page.
-pady pixels: As defined in the Tk options man page.
-relief relief: The relief to use for the cell in which the window lies.
If not specified, it uses the table's default relief.
-sticky sticky: Stickiness of the window inside the cell, as defined by
the grid command.
-window $widget: Specifies the a window to display in the annotation. It
must exist before being specified here.
the Selection
Table selections are available as type STRING. By
default, the value of the selection will be the values of
the selected cells in nested Tcl list form where each row
is a list and each column is an element of a row list. You
can change the way this value is interpreted by setting
the -rowseparator and -colseparator options.: For example, default Excel format would be to set
-rowseparator to "0 and -colseparator to "". Chang ing these values affects both how the table sends out the
selection and reads in pasted data, ensuring that the
table should always be able to cut and paste to itself.
It is possible to change how pastes are handled by editing
the table library procedure tk_tablePasteHandler . This might be necessary if -selectioncommand is set.

Row/Col Spanning

Individual cells can span multiple rows and/or columns.
This is done via the spans command (see below for exact
arguments). Cells in the title area that span are not
permitted to span beyond the title area, and will be con
strained accordingly. If the title area shrinks during a
configure, sanity checking will occur to ensure the above.
You may set spans on regular cells that extend beyond the
defined row/col area. These spans will not be con
strained, so that when the defined row/col area expands,
the span will expand with it.

When setting a span, checks are made as to whether the
span would overlap an already spanning or hidden cell.
This is an error and it not allowed. Spans can affect the
overall speed of table drawing, although not signifi
cantly. If spans are not used, then there is no perfor
mance loss.

Cells hidden by spanning cells still have valid data.
This will be seen during cut and paste operations that
involve hidden cells, or through direct access by a com
mand like get or set .

The drawing properties of spanning cells apply to only the
visual area of the cell. For example, if a cell is center
justified over 5 columns, then when viewing any portion of
those columns, it will appear centered in the visible
area. The non-visible column area will not be considered
in the centering calculations.

Command Substitution

The various option based commands that the table supports all support the familiar Tk %-substitution model (see Tk::bind for more details).: The following %-sequences are recognized and substituted
by the table widget:
%c: For SelectionCommand , it is the maximum number of columns in any row in the selection. Otherwise it is the
column of the triggered cell.
%C: A convenience substitution for %r ,%c .
%i: For SelectionCommand, it is the total number of cells in the selection. For Command , it is 0 for a read (get) and 1 for a write (set). Otherwise it is the current cursor
position in the cell.
%r: For SelectionCommand , it is the number of rows in the selection. Otherwise it is the row of the triggered cell.
%s: For ValidateCommand , it is the current value of the cell being validated. For SelectionCommand , it is the default value of the selection. For BrowseCommand , it is the index of the last active cell. For Command , it is
empty for reads (get) and the current value of the cell
for writes (set).
%S: For ValidateCommand , it is the potential new value of the cell being validated. For BrowseCommand , it is the index of the new active cell.
%W: The pathname to the window for which the command was gen
erated.

Widget Methods

The $window->TableMatrix method creates a widget object. This object supports the configure and cget methods described in Tk::options which can be used to enquire and
modify the options described above. The widget also
inherits all the methods provided by the generic Tk::Wid
get class.

The following additional methods are available for scale
widgets:

$table->activate(index): Sets the active cell to the one indicated by index.
$table->bbox(first, ?last?): It returns the bounding box for the specified cell
(range) as a 4-tuple of x, y, width and height in pixels.
It clips the box to the visible portion, if any, other
wise an empty string is returned.
$table->border(option, args): This command is a voodoo hack to implement border sizing
for tables. This is normally called through bindings,
with the following as valid options:
$table->borderMark(x, y, ?row|col?): Records x and y and the row and/or column border under
that point in the table window, if any; used in conjunc
tion with later border dragto commands. Typically this command is associated with a mouse button press in the
widget. If row or col is not specified, it returns a
tuple of both border indices (an empty item means no
border). Otherwise, just the specified item is returned.
$table->borderDragto(x, y): This command computes the difference between its x and
y arguments and the x and y arguments to the last
border mark command for the widget. It then adjusts the previously marked border by the difference. This
command is typically associated with mouse motion events
in the widget, to produce the effect of interactive bor
der resizing.
$table->cget(option): Returns the current value of the configuration option
given by option . Option may have any of the values accepted by the table command.
$table->clear(option, ?first?, ?last?): This command is a convenience routine to clear certain
state information managed by the table. first and last represent valid table indices. If neither are specified,
then the command operates on the whole table. The fol
lowing options are recognized:
$table->clearCache(?first?, ?last?): Clears the specified section of the cache, if the table
has been keeping one.
$table->clearSizes(?first?, ?last?): Clears the specified row and column areas of specific
height/width dimensions. When just one index is speci
fied, for example 2,0 , that is interpreted as row 2 and column 0.
$table->clearTags(?first?, ?last?): Clears the specified area of tags (all row, column and
cell tags).
$table->clearAll(?first?, ?last?): Performs all of the above clear functions on the speci
fied area.
$table->colWidth(?col?, ?value, col, value, ...?): If no col is specified, returns a list describing all
cols for which a width has been set. If col is speci
fied with no value, it prints out the width of that col
in characters (positive number) or pixels (negative num
ber). If one or more col-value pairs are specified, then it sets each col to be that width in characters
(positive number) or pixels (negative number). If value
is default , then the col uses the default width, speci fied by -colwidth .; $table->configure(?option?, ?value, option, value, ...?)
Query or modify the configuration options of the widget.
If no option is specified, returns a list describing
all of the available options for pathName (see Tk_Con figureInfo for information on the format of this list). If option is specified with no value , then the command returns a list describing the one named option (this
list will be identical to the corresponding sublist of
the value returned if no option is specified). If one
or more option-value pairs are specified, then the com mand modifies the given widget option(s) to have the
given value(s); in this case the command returns an
empty string. Option may have any of the values
accepted by the table command.; $table->curselection(?value?)
With no arguments, it returns the sorted indices of the
currently selected cells. Otherwise it sets all the
selected cells to the given value. The set has no
effect if there is no associated Tcl array or the state
is disabled.; $table->curvalue(?value?)
If no value is given, the value of the cell being edited
(indexed by active ) is returned, else it is set to the
given value.; $table->delete(option, arg, ?arg?)
This command is used to delete various things in a
table. It has several forms, depending on the option :; $table->deleteActive(index, ?index?)
Deletes text from the active cell. If only one index
is given, it deletes the character after that index,
otherwise it deletes from the first index to the sec
ond. index can be a number, insert or end .; $table->deleteCols(?switches?, index, ?count?)
Deletes count cols starting at (and including) col
index . The index will be constrained to the limits of the tables. If count is negative, it deletes cols
to the left. Otherwise it deletes cols to the right.
count defaults to 1 (meaning just the column speci
fied). The selection will be cleared. At the moment,
spans are not adjusted with this action. Optional
switches are:; -holddimensions
Causes the table cols to be unaffected by the deletion
(empty cols may appear).
By default the dimensions are adjusted by count .

-holdtags

Causes the tags specified by the tag method to not
move along with the data. Also prevents specific
widths set by the width method from being adjusted.
By default, these tags are properly adjusted.

-holdwindows

Causes the embedded windows created with the window
method to not move along with the data. By default,
these windows are properly adjusted.

-keeptitles

Prevents title area cells from being changed. Other
wise they are treated just like regular cells and will
move as specified.

$table->deleteRows(?switches?, index, ?count?)

Deletes count rows starting at (and including) row
index . If count is negative, it deletes rows going up. Otherwise it deletes rows going down. The selec
tion will be cleared. The switches are the same as
those for column deletion.

$table->get(first, ?last?)

Returns the value of the cells specified by the table
indices first and (optionally) last in a list.

$table->hidden(?index?, ?index, ...?)

When called without args, it returns all the hidden
cells (those cells covered by a spanning cell). If one
index is specified, it returns the spanning cell cover
ing that index, if any. If multiple indices are speci
fied, it returns 1 if all indices are hidden cells, 0
otherwise.

$table->icursor(?arg?)

With no arguments, prints out the location of the inser
tion cursor in the active cell. With one argument, sets
the cursor to that point in the string. 0 is before the
first character, you can also use insert or end for the current insertion point or the end of the text. If
there is no active cell, or the cell or table is dis
abled, this will return -1.

$table->index(index, ?row|col?)

Returns the integer cell coordinate that corresponds to
index in the form row,col. If row or col is speci fied, then only the row or column index is returned.

$table->insert(option, arg, arg)

This command is used to into various things into a
table. It has several forms, depending on the option :

$table->insertActive(index, value)

The value is a text string which is inserted at the
index postion of the active cell. The cursor is then
positioned after the new text. index can be a number,
insert or end .

$table->insertCols(?switches?, index, ?count?)

Inserts count cols starting at col index . If count is negative, it inserts before the specified col. Oth
erwise it inserts after the specified col. The selec
tion will be cleared. The switches are the same as
those for column deletion.

$table->insertRows(?switches?, index, ?count?)

Inserts count rows starting at row index . If count is negative, it inserts before the specified row. Oth
erwise it inserts after the specified row. The selec
tion will be cleared. The switches are the same as
those for column deletion.

$table->reread()

Rereads the old contents of the cell back into the edit
ing buffer. Useful for a key binding when <Escape> is
pressed to abort the edit (a default binding).

$table->rowHeight(?row?, ?value, row, value, ...?)

If no row is specified, returns a list describing all
rows for which a height has been set. If row is speci
fied with no value, it prints out the height of that row
in characters (positive number) or pixels (negative num
ber). If one or more row-value pairs are specified, then it sets each row to be that height in lines (posi
tive number) or pixels (negative number). If value is
default , then the row uses the default height, speci
fied by -rowheight .

$table->scan(option, args)

This command is used to implement scanning on tables.
It has two forms, depending on option :

$table->scanMark(x, y)

Records x and y and the current view in the table
window;
used in conjunction with later scan dragto commands.

Typically this command is associated with a mouse but
ton press in the widget. It returns an empty string.

$table->scanDragto(x, y.)

This command computes the difference between its x and
y arguments and the x and y arguments to the last
scan mark command for the widget. It then adjusts the view by 5 times the difference in coordinates. This
command is typically associated with mouse motion
events in the widget, to produce the effect of dragging
the list at high speed through the window. The return
value is an empty string.

$table->see(index)

Adjust the view in the table so that the cell given by
index is positioned as the cell one off from top left
(excluding title rows and columns) if the cell is not
currently visible on the screen. The actual cell may be
different to keep the screen full.

$table->selection(option, arg)

This command is used to adjust the selection within a
table.

It has several forms, depending on option :

$table->selectionAnchor(index)

Sets the selection anchor to the cell given by index .
The selection anchor is the end of the selection that
is fixed while dragging out a selection with the mouse.
The index anchor may be used to refer to the anchor
cell.

$table->selectionClear(first?last?)

If any of the cells between first and last (inclu sive) are selected, they are deselected.
The selection state is not changed for cells outside

this range. first may be specified as all to remove the selection from all cells.

$table->selectionIncludes(index)

Returns 1 if the cell indicated by index is currently
selected, 0 if it isn't.

$table->selectionSet(first, ?last?)

Selects all of the cells in the range between first
and last , inclusive, without affecting the selection
state of cells outside that range.

perltk note this needs to be perlized

$table->set(?row|col?, index, ?value?, ?index, value, ...?)

Sets the specified index to the associated value. Table
validation will not be triggered via this method. If
row or col precedes the list of index/value pairs,
then the value is assumed to be a Tcl list whose values
will be split and set into the subsequent columns (if
row is specified) or rows (for col ). For example,
set row 2,3 {2,3 2,4 2,5} will set 3 cells, from 2,3 to 2,5. The setting of cells is silently bounded by the
known table dimensions.

$table->spans(?index?, ?rows,cols, index, rows,cols, ...?)

This command is used to manipulate row/col spans. When
called with no arguments, all known spans are returned
as a list of tuples of the form {index span}. When
called with only the index , the span for that index only is returned, if any. Otherwise an even number of
index rows,cols pairs are used to set spans. A span starts at the index and continues for the specified
number of rows and cols. Negative spans are not sup
ported. A span of 0,0 unsets any span on that cell.
See EXAMPLES for more info.

$table->tag(option, ?arg, arg, ...?)

This command is used to manipulate tags. The exact
behavior of the command depends on the option argument
that follows the tag argument. cget , cell , and row|col complain about unknown tag names. The follow ing forms of the command are currently supported:

$table->tagCell(tagName, ?index, ...?)

With no arguments, prints out the list of cells that
use the tag . Otherwise it sets the specified cells to
use the tag . If tag is '', the cells are reset to
the default tag . Tags added during -*tagcommand eval
uation do not register here.

$table->tagCget(tagName, option)

This command returns the current value of the option
named option associated with the tag given by tagName . Option may have any of the values accepted by the
tag configure widget command.

$table->tagCol(tagName, ?col, ...?)

With no arguments, prints out the list of cols that use
the tag . Otherwise it sets the specified cols to use
the tag. If tag is '', the cols are reset to the
default tag . Tags added during -coltagcommand evalua
tion do not register here. If tagName does not exist, it is not created, but nor is an error generated.

$table->tagConfigure(tagName, ?option?, ?value?, ?option, value, ...?)

This command is similar to the configure widget com mand except that it modifies options associated with
the tag given by tagName instead of modifying options for the overall table widget. If no option is speci
fied, the command returns a list describing all of the
available options for tagName (see Tk_ConfigureInfo for information on the format of this list). If option is specified with no value , then the command returns a
list describing the one named option (this list will be
identical to the corresponding sublist of the value
returned if no option is specified). If one or more
option-value pairs are specified, then the command modifies the given option(s) to have the given value(s)
in tagName ; in this case the command returns an empty string. See TAGS above for details on the options
available for tags.

$table->tagDelete(tagName)

Deletes a tag. No error if the tag does not exist.

$table->tagExists(tagName)

Returns 1 if the named tag exists, 0 otherwise.

$table->tagIncludes(tagName, index)

Returns 1 if the specified index has the named tag, 0
otherwise.

$table->tagNames(?pattern?)

If no pattern is specified, shows the names of all
defined tags. Otherwise the pattern is used as a glob pattern to show only tags matching that pattern.

$table->tagRow(tagName, ?row, ...?)

With no arguments, prints out the list of rows that use
the tag . Otherwise it sets the specified rows to use
the tag . If tag is '', the rows are reset to use the default tag. Tags added during -rowtagcommand evalua
tion do not register here. If tagName does not exist, it is not created, but nor is an error generated.

$table->validate(index)

Explicitly validates the specified index based on the
current -validatecommand and returns 0 or 1 based on whether the cell was validated.

$table->window(option, ?arg, arg, ...?)

This command is used to manipulate embedded windows.
The exact behavior of the command depends on the option
argument that follows the window argument. The follow
ing forms of the command are currently supported:

$table->windowCget(index, option)

This command returns the current value of the option
named option associated with the window given by index . Option may have any of the values accepted by the
window configure widget command.

$table->windowConfigure(index, ?option?, ?value?, ?option, value, ...?)

This command is similar to the configure widget com mand except that it modifies options associated with
the embedded window given by index instead of modify
ing options for the overall table widget. If no option is specified, the command returns a list describing all
of the available options for index (see Tk_Configure Info for information on the format of this list). If
option is specified with no value , then the command returns a list describing the one named option (this
list will be identical to the corresponding sublist of
the value returned if no option is specified). If one or more option-value pairs are specified, then the command modifies the given option(s) to have the given
value(s) in index ; in this case the command returns an
empty string. See EMBEDDED WINDOWS above for details on
the options available for windows.

$table->windowDelete(index, ?index, ...?)

Deletes an embedded window from the table. The associ
ated window will also be deleted.

$table->windowMove(indexFrom, indexTo)

Moves an embedded window from one cell to another. If
a window already exists in the target cell, it will be
deleted.

$table->windowNames(?pattern?)

If no pattern is specified, shows the cells of all
embedded windows. Otherwise the pattern is used as a
glob pattern to show only cells matching that pattern.

$table->xview(args)

This command is used to query and change the horizontal
position of the information in the widget's window. It
can take any of the following forms:

$table->xview()

Returns a list containing two elements. Each element is
a real fraction between 0 and 1; together they describe
the horizontal span that is visible in the window. For
example, if the first element is .2 and the second ele
ment is .6, 20% of the table's text is off-screen to the
left, the middle 40% is visible in the window, and 40%
of the text is off-screen to the right. These are the
same values passed to scrollbars via the -xscrollcommand option.

$table->xview(index)

Adjusts the view in the window so that the column given
by index is displayed at the left edge of the window.

$table->xviewMoveto(fraction)

Adjusts the view in the window so that fraction of the total width of the table text is off-screen to the left.
fraction must be a fraction between 0 and 1.

$table->xviewScroll(number, what)

This command shifts the view in the window left or right
according to number and what . Number must be an inte ger. What must be either units or pages or an abbrevi ation of one of these. If what is units , the view adjusts left or right by number character units (the
width of the 0 character) on the display; if it is
pages then the view adjusts by number screenfuls. If number is negative then characters farther to the left
become visible; if it is positive then characters far
ther to the right become visible.

$table->yview(?args?)

This command is used to query and change the vertical
position of the text in the widget's window. It can
take any of the following forms:

$table->yview()

Returns a list containing two elements, both of which
are real fractions between 0 and 1. The first element
gives the position of the table element at the top of
the window, relative to the table as a whole (0.5 means
it is halfway through the table, for example). The
second element gives the position of the table element
just after the last one in the window, relative to the
table as a whole. These are the same values passed to
scrollbars via the -yscrollcommand option.

$table->yview(index)

Adjusts the view in the window so that the row given by
index is displayed at the top of the window.

$table->yviewMoveto(fraction)

Adjusts the view in the window so that the element
given by fraction appears at the top of the window. Fraction is a fraction between 0 and 1; 0 indicates the first element in the table, 0.33 indicates the ele
ment one-third the way through the table, and so on.

$table->yviewscroll(number, what)

This command adjusts the view in the window up or down
according to number and what . Number must be an integer. What must be either units or pages . If what is units , the view adjusts up or down by number lines; if it is pages then the view adjusts by number screenfuls. If number is negative then earlier ele
ments become visible; if it is positive then later ele
ments become visible.

Default Bindings

The initialization creates class bindings that give the
following default behaviour:

[1]: Clicking Button-1 in a cell activates that cell. Click
ing into an already active cell moves the insertion cur
sor to the character nearest the mouse.
[2]: Moving the mouse while Button-1 is pressed will stroke
out a selection area. Exiting while Button-1 is pressed
causing scanning to occur on the table along with selec
tion.
[3]: Moving the mouse while Button-2 is pressed causes scan
ning to occur without any selection.
[4]: Home moves the table to have the origin in view.
[5]: End moves the table to have the end cell in view.
[6]: Control-Home moves the table to the origin and activates
that cell.
[7]: Control-End moves the table to the end and activates that
cell.
[8]: Shift-Control-Home extends the selection to the origin.
[9]: Shift-Control-End extends the selection to the end.
[10]: The left, right, up and down arrows move the active cell.
[11]: Shift-<arrow> extends the selection in that direction.
[12]: Control-leftarrow and Control-rightarrow move the inser
tion cursor within the cell.
[13]: Control-slash selects all the cells.
[14]: Control-backslash clears selection from all the cells.
[15]: Backspace deletes the character before the insertion cur
sor in the active cell.
[16]: Delete deletes the character after the insertion cursor
in the active cell.
[17]: Escape rereads the value of the active cell from the
specified data source, discarding any edits that have may
been performed on the cell.
[18]: Control-a moves the insertion cursor to the beginning of
the active cell.
[19]: Control-e moves the insertion cursor to the end of the
active cell.
[20]: Control-minus and Control-equals decrease and increase
the width of the column with the active cell in it.
[21]: Moving the mouse while Button-3 (the right button on Win
dows) is pressed while you are over a border will cause
interactive resizing of that row and/or column to occur,
based on the value of -resizeborders . Some bindings may have slightly different behavior dependent on the -selec
tionmode of the widget. If the widget is disabled using the -state option, then its view can still be adjusted
and cells can still be selected, but no insertion cursor
will be displayed and no cell modifications will take
place. The behavior of tables can be changed by defining
new bindings for individual widgets or by redefining the
class bindings. The default bindings are either compiled
in the TableMatrix.pm file

Performance Issues

The number of rows and columns or a table widget should
not significantly affect the speed of redraw. Recalcula
tion and redraw of table parameters and cells is
restricted as much as possible. The display cell with the
insert cursor is redrawn each time the cursor blinks,
which causes a steady stream of graphics traffic. Set the
-insertofftime option to 0 avoid this. The use of a -command with the table without a cache can cause signifi cant slow-down, as the command is called once for each
request of a cell value.

Examples

Set the topleft title area to be one spanning cell. This
overestimates both row and column span by one, but the
command does all the constraining for us. $table span [$table cget -roworigin],[$table cget -colorigin] [$table cget -titlerows],[$table cget -titlecols] Force a table window refresh (useful for the slight chance that a bug in
the table is not causing proper refresh): $table config ure -padx [$table cget -padx]

Keywords

table, widget, extension

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