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iwidgets::tabset(1) [incr Widgets] iwidgets::tabset(1)
____________________________________________________________________________________________________________
NAME
iwidgets::tabset - create and manipulate tabs as as set
SYNOPSIS
iwidgets::tabset pathName ?options?
INHERITANCE
itk::Widget <- iwidgets::Tabset
STANDARD OPTIONS
background font selectBackground cursor
foreground selectForeground disabledForeground height
width
See the "options" manual entry for details on the standard options.
WIDGET-SPECIFIC OPTIONS
Name: angle
Class: Angle
Command-Line Switch: -angle
Specifes the angle of slope from the inner edge to the outer edge of the tab. An angle of 0
specifies square tabs. Valid ranges are 0 to 45 degrees inclusive. Default is 15 degrees. If
tabPos is e or w, this option is ignored.
Name: backdrop
Class: Backdrop
Command-Line Switch: -backdrop
Specifies a background color to use when filling in the area behind the tabs.
Name: bevelAmount
Class: BevelAmount
Command-Line Switch: -bevelamount
Specifes the size of tab corners. A value of 0 with angle set to 0 results in square tabs. A
bevelAmount of 4, means that the tab will be drawn with angled corners that cut in 4 pixels
from the edge of the tab. The default is 0.
Name: command
Class: Command
Command-Line Switch: -command
Specifes the prefix of a Tcl command to invoke to change the view in the
widget associated with the tabset. When a user selects a tab, a Tcl command
is invoked. The actual command consists of this option followed by a space
and a number. The number is the numerical index of the tab that has been
selected.
Name: equalTabs
Class: EqualTabs
Command-Line Switch: -equaltabs
Specifies whether to force tabs to be equal sized or not. A value of true means constrain tabs
to be equal sized. A value of false allows each tab to size based on the text label size. The
value may have any of the forms accepted by the Tcl_GetBoolean, such as true, false, 0, 1,
yes, or no.
For horizontally positioned tabs (tabPos is either s or n), true forces all tabs to be equal
width (the width being equal to the longest label plus any padX specified). Horizontal tabs
are always equal in height.
For vertically positioned tabs (tabPos is either w or e), true forces all tabs to be equal
height (the height being equal to the height of the label with the largest font). Vertically
oriented tabs are always equal in width.
Name: gap
Class: Gap
Command-Line Switch: -gap
Specifies the amount of pixel space to place between each tab. Value may be any pixel offset
value. In addition, a special keyword overlap can be used as the value to achieve a standard
overlap of tabs. This value may have any of the forms acceptable to Tk_GetPixels.
Name: margin
Class: Margin
Command-Line Switch: -margin
Specifies the amount of space to place between the outside edge of the tabset and the outside
edge of its tabs. If tabPos is s, this is the amount of space between the bottom edge of the
tabset and the bottom edge of the set of tabs. If tabPos is n, this is the amount of space
between the top edge of the tabset and the top edge of the set of tabs. If tabPos is e, this
is the amount of space between the right edge of the tabset and the right edge of the set of
tabs. If tabPos is w, this is the amount of space between the left edge of the tabset and the
left edge of the set of tabs. This value may have any of the forms acceptable to Tk_GetPixels.
Name: padX
Class: PadX
Command-Line Switch: -padx
Specifies a non-negative value indicating how much extra space to request for a tab around its
label in the X-direction. When computing how large a window it needs, the tab will add this
amount to the width it would normally need The tab will end up with extra internal space to
the left and right of its text label. This value may have any of the forms acceptable to
Tk_GetPixels.
Name: padY
Class: PadY
Command-Line Switch: -pady
Specifies a non-negative value indicating how much extra space to request for a tab around its
label in the Y-direction. When computing how large a window it needs, the tab will add this
amount to the height it would normally need The tab will end up with extra internal space to
the top and bottom of its text label. This value may have any of the forms acceptable to
Tk_GetPixels.
Name: raiseSelect
Class: RaiseSelect
Command-Line Switch: -raiseselect
Specifes whether to slightly raise the selected tab from the rest of the tabs. The selected
tab is drawn 2 pixels closer to the outside edge of the tabset than the unselected tabs. A
value of true says to raise selected tabs, a value of false turns this off. The default is
false. The value may have any of the forms accepted by the Tcl_GetBoolean, such as true,
false, 0, 1, yes, or no.
Name: start
Class: Start
Command-Line Switch: -start
Specifies the amount of space to place between the left or top edge of the tabset and the
starting edge of its tabs. For horizontally positioned tabs, this is the amount of space
between the left edge of the tabset and the left edge of the first tab. For vertically posi-
tioned tabs, this is the amount of space between the top of the tabset and the top of the
first tab. This value may change if the user performs a MButton-2 scroll on the tabs. This
value may have any of the forms acceptable to Tk_GetPixels.
Name: state
Class: State
Command-Line Switch: -state
Sets the active state of the tabset. Specifying normal allows all tabs to be selectable. Spec-ifying Specifying
ifying disabled disables the tabset causing all tabs to be drawn in the disabledForeground
color.
Name: tabBorders
Class: TabBorders
Command-Line Switch: -tabborders
Specifies whether to draw the borders of tabs that are not selected. Specifying true (the
default) draws these borders, specifying false draws only the border around the selected tab.
The value may have any of the forms accepted by the Tcl_GetBoolean, such as true, false, 0, 1,
yes, or no.
Name: tabPos
Class: TabPos
Command-Line Switch: -tabpos
Specifies the location of the set of tabs in relation to another widget. Must be n, s, e, or
w. Defaults to s. North tabs open downward, South tabs open upward. West tabs open to the
right, east tabs open to the left.
____________________________________________________________________________________________________________
DESCRIPTION
The iwidgets::tabset command creates a new window (given by the pathName argument) and makes it into
a tabset widget. Additional options, described above may be specified on the command line or in the
option database to configure aspects of the tabset such as its colors, font, and text. The iwid-gets::tabset iwidgets::tabset
gets::tabset command returns its pathName argument. At the time this command is invoked, there must
not exist a window named pathName, but pathName's parent must exist.
A tabset is a widget that contains a set of Tab buttons. It displays these tabs in a row or column
depending on it tabpos. When a tab is clicked on, it becomes the only tab in the tab set that is
selected. All other tabs are deselected. The Tcl command prefix associated with this tab (through the
command tab configure option) is invoked with the tab index number appended to its argument list.
This allows the tabset to control another widget such as a Notebook.
TABS
Tabs are drawn to appear attached to another widget. The tabset draws an edge boundary along one of
its edges. This edge is known as the attachment edge. This edge location is dependent on the value of
tabPos. For example, if tabPos is s, the attachment edge wil be on the top side of the tabset (in
order to attach to the bottom or south side of its attached widget). The selected tab is draw with a
3d relief to appear above the other tabs. This selected tab "opens" toward attachment edge.
Tabs can be controlled in their location along the edges, the angle that tab sides are drawn with,
gap between tabs, starting margin of tabs, internal padding around labels in a tab, the font, and its
text or bitmap.
WIDGET-SPECIFIC METHODS
The iwidgets::tabset 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 a tabset take as one argument an indicator of which tab of the tabset
to operate on. These indicators are called indexes and may be specified in any of the following
forms:
number Specifies the tab numerically, where 0 corresponds to the first tab in the tab set, 1 to the
second, and so on.
select Specifies the currently selected tab's index. If no tab is currently selected, the value -1 is
returned.
end Specifes the last tab in the tabset's index. If the tabset is empty this will return -1.
pattern
If the index doesn't satisfy any of the above forms, then this form is used. Pattern is pat-tern-matched pattern-matched
tern-matched against the label of each tab in the tabset, in order from the first to the last
tab, until a matching entry is found. The rules of Tcl_StringMatch are used.
The following commands are possible for tabset widgets:
pathName add ?option value option value ...?
Add a new tab at the end of the tabset. Returns the child site pathName. If additional
arguments are present, they specify any of the following options:
-angle value
Specifes the angle of slope from the inner edge to the outer edge of the tab. An
angle of 0 specifies square tabs. Valid ranges are 0 to 45 degrees inclusive.
Default is 15 degrees. If this option is specified as an empty string (the
default), then the angle option for the overall tabset is used.
-background value
Specifies a background color to use for displaying tabs when they are in their
normal state (unselected). If this option is specified as an empty string (the
default), then the background option for the overall tabset is used.
-bevelamount value
Specifes the size of tab corners. A value of 0 with angle set to 0 results in
square tabs. A bevelAmount of 4, means that the tab will be drawn with angled
corners that cut in 4 pixels from the edge of the tab. The default is 0. This is
generally only set at the tabset configuration level. Tabs normally will want to
share the same bevelAmount.
-bitmap value
If label is a non-empty string, specifies a bitmap to display in the tab. Bitmap
may be of any of the forms accepted by Tk_GetBitmap.
-disabledforeground value
Specifies a foreground color to use for displaying tab labels when tabs are in
their disable state. If this option is specified as an empty string (the
default), then the disabledforeground option for the overall tabset is used.
-font value
Specifies the font to use when drawing the label on a tab. If this option is
specified as an empty string then the font option for the overall tabset is
used.
-foreground value
Specifies a foreground color to use for displaying tab labels when tabs are in
their normal unselected state. If this option is specified as an empty string
(the default), then the foreground option for the overall tabset is used.
-image value
If label is a non-empty string, specifies an image to display in the tab. Image
must have been created with the image create command. Typically, if the image
option is specified then it overrides other options that specify a bitmap or
textual value to display in the widget; the image option may be reset to an
empty string to re-enable a bitmap or text display.
-label value
Specifies a text string to be placed in the tabs label. If this value is set,
the bitmap option is overridden and this option is used instead. This label
serves as an additional identifier used to reference the tab. This label may be
used for the index value in widget commands.
-selectbackground value
Specifies a background color to use for displaying the selected tab. If this
option is specified as an empty string (the default), then the selectBackground
option for the overall tabset is used.
-selectforeground value
Specifies a foreground color to use for displaying the selected tab. If this
option is specified as an empty string (the default), then the selectForeground
option for the overall tabset is used.
-padx value
Specifies a non-negative value indicating how much extra space to request for a
tab around its label in the X-direction. When computing how large a window it
needs, the tab will add this amount to the width it would normally need The tab
will end up with extra internal space to the left and right of its text label.
This value may have any of the forms acceptable to Tk_GetPixels. If this option
is specified as an empty string (the default), then the padX option for the
overall tabset is used
-pady value
Specifies a non-negative value indicating how much extra space to request for a
tab around its label in the Y-direction. When computing how large a window it
needs, the tab will add this amount to the height it would normally need The tab
will end up with extra internal space to the top and bottom of its text label.
This value may have any of the forms acceptable to Tk_GetPixels. If this option
is specified as an empty string (the default), then the padY option for the
overall tabset is used
-state value
Sets the state of the tab. Specifying normal allows this tab to be selectable.
Specifying disabled disables the this tab causing its tab label to be drawn in
the disabledForeground color. The tab will not respond to events until the state
is set back to normal.
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_Configure-Info Tk_ConfigureInfo
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 speci-fied). specified).
fied). 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 iwidgets::tabset com-mand. command.
mand.
pathName delete index1 ?index2?
Delete all of the tabs between index1 and index2 inclusive. If index2 is omitted then
it defaults to index1. Returns an empty string.
pathName index index
Returns the numerical index corresponding to index.
pathName insert index ?option value option value ...?
Insert a new tab in the tabset before the tab specified by index. The additional argu-ments arguments
ments are the same as for the add command. Returns the tab's pathName.
pathName next
Advances the selected tab to the next tab (order is determined by insertion order). If
the currently selected tab is the last tab in the tabset, the selection wraps around to
the first tab. It behaves as if the user selected the next tab.
pathName tabconfigure index ?option? ?value?
This command is similar to the configure command, except that it applies to the options
for an individual tab, whereas configure applies to the options for the tabset 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 tab index (see Tk_ConfigureInfo for information on the format of
this list).
pathName prev
Moves the selected tab to the previous tab (order is determined by insertion order). If
the currently selected tab is the first tab in the tabset, the selection wraps around
to the last tab in the tabset. It behaves as if the user selected the previous tab.
pathName select index
Selects the tab specified by index as the currently selected tab. It behaves as if the
user selected the new tab.
EXAMPLE
Following is an example that creates a tabset with two tabs and a list box that the tabset controls.
In addition selecting an item from the list also selects the corresponding tab.
package require Iwidgets 4.0
# Define a proc that knows how to select an item
# from a list given an index from the tabset -command callback.
proc selectItem { item } {
.l selection clear [.l curselection]
.l selection set $item
.l see $item
}
# Define a proc that knows how to select a tab
# given a y pixel coordinate from the list..
proc selectTab { y } {
set whichItem [.l nearest $y]
.ts select $whichItem
}
# Create a listbox with two items (one and two)
# and bind button 1 press to the selectTab procedure.
listbox .l -selectmode single -exportselection false
.l insert end one
.l insert end two
.l selection set 0
pack .l
bind .l <ButtonPress-1> { selectTab %y }
# Create a tabset, set its -command to call selectItem
# Add two labels to the tabset (one and two).
iwidgets::tabset .ts -command selectItem
.ts add -label 1
.ts add -label 2
.ts select 0
pack .ts -fill x -expand no
AUTHOR
Bill W. Scott
KEYWORDS
tab tabset notebook tabnotebook
Tk iwidgets::tabset(1)
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