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ActiveTcl User Guide |
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panedwindow - Create and manipulate a paned window widget
SYNOPSIS
panedwindow pathName ?options?
INHERITANCE
itk::Widget <- panedwindow
STANDARD OPTIONS
See the "options"
manual entry for details on the standard options.
WIDGET-SPECIFIC OPTIONS
Name: height
Class: Height
Command-Line Switch: -height
Specifies the overall height of the
paned window in any of the forms acceptable to Tk_GetPixels.
The default is 10 pixels.
Name: orient
Class: Orient
Command-Line Switch: -orient
Specifies the orientation of the
separators: vertical or horizontal. The default is
horizontal.
Name: sashBorderWidth
Class: BorderWidth
Command-Line Switch: -sashborderwidth
Specifies a value indicating the
width of the 3-D border to draw around the outside of the sash in
any of the forms acceptable to Tk_GetPixels. The default is
2 pixels.
Name: sashCursor
Class: Cursor
Command-Line Switch: -sashcursor
Specifies the type of cursor to be
displayed in the sash. The default is crosshair.
Name: sashHeight
Class: Height
Command-Line Switch: -sashheight
Specifies the height of the sash in
any of the forms acceptable to Tk_GetPixels. The default is
10 pixels.
Name: sashIndent
Class: SashIndent
Command-Line Switch sashindent
Specifies the placement of the sash
along the panes in any of the forms acceptable to
Tk_GetPixels. A positive value causes the sash to be offset
from the near (left/top) side of the pane, and a negative value
causes the sash to be offset from the far (right/bottom) side. If
the offset is greater than the width, then the sash is placed flush
against the side. The default is -10 pixels.
Name: sashWidth
Class: Width
Command-Line Switch: -sashwidth
Specifies the width of the sash in
any of the forms acceptable to Tk_GetPixels. The default is
10 pixels.
Name: showHandle
Class: ShowHandle
Command-Line Switch: -showhandle
Specifies whether or not to display
the sashes on the window panes. The default is 1, and valid options
are 0 and 1.
Name: thickness
Class: Thickness
Command-Line Switch: -thickness
Specifies the thickness of the
separators in any of the forms acceptable to Tk_GetPixels.
The default is 3 pixels.
Name: width
Class: Width
Command-Line Switch: -width
Specifies the overall width of the
paned window in any of the forms acceptable to Tk_GetPixels.
The default is 10 pixels.
DESCRIPTION
The panedwindow command creates a multiple paned window
widget capable of orienting the panes either vertically or
horizontally. Each pane is itself a frame acting as a child site
for other widgets. The border separating each pane contains a sash
which allows user positioning of the panes relative to one
another.
METHODS
The panedwindow command creates a new Tcl command whose
name is pathName. This command may be used to invoke various
operations on the widget. It has the following general form:
pathName option ?arg arg ...?
Option and the args determine the exact behavior of
the command.
Many of the widget commands for the panedwindow take as
one argument an indicator of which pane of the paned window to
operate on. These indicators are called indexes and allow
reference and manipulation of panes regardless of their current map
state. Paned window indexes may be specified in any of the
following forms:
- number
- Specifies the pane numerically, where 0 corresponds to the
nearest (top/left-most) pane of the paned window.
- end
- Indicates the farthest (bottom/right-most) pane of the paned
window.
- pattern
- If the index doesn't satisfy one of the above forms then this
form is used. Pattern is pattern-matched against the tag of
each pane in the panedwindow, in order from left/top to right/left,
until a matching entry is found. The rules of
Tcl_StringMatch are used.
WIDGET-SPECIFIC METHODS
- pathName add tag ?option value option
value?
- Adds a new pane to the paned window on the far side
(right/bottom). The following options may be specified:
- -margin value
- Specifies the border distance between the pane and pane
contents is any of the forms acceptable to Tk_GetPixels. The
default is 8 pixels.
- -minimum value
- Specifies the minimum size that a pane's contents may reach not
inclusive of twice the margin in any of the forms acceptable to
Tk_GetPixels. The default is 10 pixels. The add
method returns the path name of the pane.
- pathName cget option
- Returns the current value of the configuration option given by
option. Option may have any of the values accepted by
the panedwindow command.
- pathName childsite ?index?
- Returns a list of the child site path names or a specific child
site given an index. The list is constructed from the near side
(left/top) to the far side (right/bottom).
- pathName 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_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 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
panedwindow command.
- pathName delete index
- Deletes a specified pane given an index.
- pathName fraction percentage percentage
?percentage percentage ...?
- Sets the visible percentage of the panes. Specifies a set of
percentages which are applied to the visible panes from the near
side (left/top). The number of percentages must be equal to the
current number of visible (mapped) panes and add up to 100.
- pathName hide index
- Changes the visiblity of the specified pane, allowing a
previously displayed pane to be visually removed rather than
deleted.
- pathName index index
- Returns the numerical index corresponding to index.
- pathName insert index tag ?option value
option value ...?
- Same as the add command except that it inserts the new
pane just before the one given by index, instead of
appending to the end of the panedwindow. The option, and
value arguments have the same interpretation as for the
add widget command.
- pathName paneconfigure index
?options?
- This command is similar to the configure command, except
that it applies to the options for an individual pane, whereas
configure applies to the options for the paned window as a
whole. Options may have any of the values accepted by the
add widget command. If options are specified, options
are modified as indicated in the command and the command returns an
empty string. If no options are specified, returns a list
describing the current options for entry index (see
Tk_ConfigureInfo for information on the format of this
list).
- pathName reset
- Redisplays the pane window using default percentages.
- pathName show index
- Changes the visiblity of the specified pane, allowing a
previously hidden pane to be displayed.
NOTES
Dynamic changing of the margin and or
minimum options to values which make the current configuration
invalid will block subsequent sash movement until the fractions are
modified via the fraction method. For example a panedwindow is
created with three panes and the minimum and margin options are at
their default settings. Next the user moves the sashes to compact
the panes to one side. Now, if the minimum is increased on the most
compressed pane via the paneconfigure method to a large enough
value, then sash movement is blocked until the fractions are
adjusted. This situation is unusual and under normal operation of
the panedwindow, this problem will never occur.
EXAMPLE
panedwindow .pw -width 300 -height 300
.pw add top
.pw add middle -margin 10
.pw add bottom -margin 10 -minimum 10
pack .pw -fill both -expand yes
foreach pane [.pw childSite] {
button $pane.b -text $pane -relief raised -borderwidth 2
pack $pane.b -fill both -expand yes
}
.pw fraction 50 30 20
.pw paneconfigure 0 -minimum 20
.pw paneconfigure bottom -margin 15
ACKNOWLEDGEMENTS:
Jay Schmidgall
1994 - Base logic posted to
comp.lang.tcl
Joe Hidebrand <hildjj@fuentez.com>
07/25/94 - Posted first multipane
version to comp.lang.tcl
07/28/94 - Added support for vertical
panes
Ken Copeland <ken@hilco.com>
09/28/95 - Smoothed out the sash
movement and added squeezable panes.
AUTHOR
Mark L. Ulferts
KEYWORDS
panedwindow, widget