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497 lines
17 KiB
Plaintext
497 lines
17 KiB
Plaintext
15 years ago
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#
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# Labeledframe
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# ----------------------------------------------------------------------
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# Implements a hull frame with a grooved relief, a label, and a
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# frame childsite.
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#
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# The frame childsite can be filled with any widget via a derived class
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# or though the use of the childsite method. This class was designed
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# to be a general purpose base class for supporting the combination of
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# a labeled frame and a childsite. The options include the ability to
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# position the label at configurable locations within the grooved relief
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# of the hull frame, and control the display of the label.
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#
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# To following demonstrates the different values which the "-labelpos"
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# option may be set to and the resulting layout of the label when
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# one executes the following command with "-labeltext" set to "LABEL":
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#
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# example:
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# labeledframe .w -labeltext LABEL -labelpos <ne,n,nw,se,s,sw,en,e,es,wn,s,ws>
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#
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# ne n nw se s sw
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#
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# *LABEL**** **LABEL** ****LABEL* ********** ********* **********
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# * * * * * * * * * * * *
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# * * * * * * * * * * * *
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# * * * * * * * * * * * *
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# ********** ********* ********** *LABEL**** **LABEL** ****LABEL*
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#
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# en e es wn s ws
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#
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# ********** ********* ********* ********* ********* **********
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# * * * * * * * * * * * *
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# L * * * * * * L * * * *
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# A * L * * * * A * L * L
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# B * A * L * * B * A * A
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# E * B * A * * E * B * B
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# L * E * B * * L * E * E
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# * * L * E * * * * L * L
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# * * * * L * * * * * * *
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# ********** ********** ********* ********** ********* **********
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#
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# ----------------------------------------------------------------------
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# AUTHOR: John A. Tucker EMAIL: jatucker@spd.dsccc.com
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#
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# ======================================================================
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# Copyright (c) 1997 DSC Technologies Corporation
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# ======================================================================
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# Permission to use, copy, modify, distribute and license this software
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# and its documentation for any purpose, and without fee or written
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# agreement with DSC, is hereby granted, provided that the above copyright
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# notice appears in all copies and that both the copyright notice and
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# warranty disclaimer below appear in supporting documentation, and that
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# the names of DSC Technologies Corporation or DSC Communications
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# Corporation not be used in advertising or publicity pertaining to the
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# software without specific, written prior permission.
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#
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# DSC DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
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# ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, AND NON-
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# INFRINGEMENT. THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, AND THE
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# AUTHORS AND DISTRIBUTORS HAVE NO OBLIGATION TO PROVIDE MAINTENANCE,
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# SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. IN NO EVENT SHALL
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# DSC BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
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# ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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# WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTUOUS ACTION,
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# ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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# SOFTWARE.
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# ======================================================================
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#
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# Default resources.
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#
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option add *Labeledframe.labelMargin 10 widgetDefault
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option add *Labeledframe.labelFont \
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"-Adobe-Helvetica-Bold-R-Normal--*-120-*-*-*-*-*-*" widgetDefault
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option add *Labeledframe.labelPos n widgetDefault
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option add *Labeledframe.borderWidth 2 widgetDefault
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option add *Labeledframe.relief groove widgetDefault
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#
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# Usual options.
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#
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itk::usual Labeledframe {
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keep -background -cursor -labelfont -foreground
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}
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itcl::class iwidgets::Labeledframe {
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inherit itk::Archetype
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itk_option define -ipadx iPadX IPad 0
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itk_option define -ipady iPadY IPad 0
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itk_option define -labelmargin labelMargin LabelMargin 10
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itk_option define -labelpos labelPos LabelPos n
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constructor {args} {}
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destructor {}
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#
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# Public methods
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#
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public method childsite {}
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#
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# Protected methods
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#
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protected {
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method _positionLabel {{when later}}
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method _collapseMargin {}
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method _setMarginThickness {value}
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method smt {value} { _setMarginThickness $value }
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}
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#
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# Private methods/data
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#
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private {
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proc _initTable {}
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variable _reposition "" ;# non-null => _positionLabel pending
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variable itk_hull ""
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common _LAYOUT_TABLE
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}
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}
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#
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# Provide a lowercased access method for the Labeledframe class.
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#
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proc ::iwidgets::labeledframe {pathName args} {
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uplevel ::iwidgets::Labeledframe $pathName $args
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}
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# -----------------------------------------------------------------------------
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# CONSTRUCTOR
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# -----------------------------------------------------------------------------
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itcl::body iwidgets::Labeledframe::constructor { args } {
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#
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# Create a window with the same name as this object
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#
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set itk_hull [namespace tail $this]
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set itk_interior $itk_hull
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itk_component add hull {
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frame $itk_hull \
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-relief groove \
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-class [namespace tail [info class]]
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} {
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keep -background -cursor -relief -borderwidth
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rename -highlightbackground -background background Background
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rename -highlightcolor -background background Background
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}
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bind itk-delete-$itk_hull <Destroy> "itcl::delete object $this"
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set tags [bindtags $itk_hull]
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bindtags $itk_hull [linsert $tags 0 itk-delete-$itk_hull]
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#
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# Create the childsite frame window
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# _______
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# |_____|
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# |_|X|_|
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# |_____|
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#
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itk_component add childsite {
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frame $itk_interior.childsite -highlightthickness 0 -bd 0
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}
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#
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# Create the label to be positioned within the grooved relief
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# of the hull frame.
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#
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itk_component add label {
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label $itk_interior.label -highlightthickness 0 -bd 0
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} {
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usual
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rename -bitmap -labelbitmap labelBitmap Bitmap
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rename -font -labelfont labelFont Font
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rename -image -labelimage labelImage Image
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rename -text -labeltext labelText Text
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rename -textvariable -labelvariable labelVariable Variable
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ignore -highlightthickness -highlightcolor
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}
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grid $itk_component(childsite) -row 1 -column 1 -sticky nsew
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grid columnconfigure $itk_interior 1 -weight 1
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grid rowconfigure $itk_interior 1 -weight 1
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bind $itk_component(label) <Configure> +[itcl::code $this _positionLabel]
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#
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# Initialize the class array of layout configuration options. Since
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# this is a one time only thing.
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#
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_initTable
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eval itk_initialize $args
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#
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# When idle, position the label.
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#
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_positionLabel
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}
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# -----------------------------------------------------------------------------
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# DESTRUCTOR
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# -----------------------------------------------------------------------------
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itcl::body iwidgets::Labeledframe::destructor {} {
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if {$_reposition != ""} {
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after cancel $_reposition
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}
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if {[winfo exists $itk_hull]} {
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set tags [bindtags $itk_hull]
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set i [lsearch $tags itk-delete-$itk_hull]
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if {$i >= 0} {
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bindtags $itk_hull [lreplace $tags $i $i]
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}
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destroy $itk_hull
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}
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}
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# -----------------------------------------------------------------------------
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# OPTIONS
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# -----------------------------------------------------------------------------
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# ------------------------------------------------------------------
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# OPTION: -ipadx
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#
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# Specifies the width of the horizontal gap from the border to the
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# the child site.
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# ------------------------------------------------------------------
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itcl::configbody iwidgets::Labeledframe::ipadx {
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grid configure $itk_component(childsite) -padx $itk_option(-ipadx)
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_positionLabel
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}
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# ------------------------------------------------------------------
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# OPTION: -ipady
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#
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# Specifies the width of the vertical gap from the border to the
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# the child site.
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# ------------------------------------------------------------------
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itcl::configbody iwidgets::Labeledframe::ipady {
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grid configure $itk_component(childsite) -pady $itk_option(-ipady)
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_positionLabel
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}
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# -----------------------------------------------------------------------------
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# OPTION: -labelmargin
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#
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# Set the margin of the most adjacent side of the label to the hull
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# relief.
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# ----------------------------------------------------------------------------
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itcl::configbody iwidgets::Labeledframe::labelmargin {
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_positionLabel
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}
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# -----------------------------------------------------------------------------
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# OPTION: -labelpos
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#
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# Set the position of the label within the relief of the hull frame
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# widget.
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# ----------------------------------------------------------------------------
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itcl::configbody iwidgets::Labeledframe::labelpos {
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_positionLabel
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}
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# -----------------------------------------------------------------------------
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# PROCS
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# -----------------------------------------------------------------------------
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# -----------------------------------------------------------------------------
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# PRIVATE PROC: _initTable
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#
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# Initializes the _LAYOUT_TABLE common variable of the Labeledframe
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# class. The initialization is performed in its own proc ( as opposed
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# to in the class definition ) so that the initialization occurs only
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# once.
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#
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# _LAYOUT_TABLE common array description:
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# Provides a table of the configuration option values
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# used to place the label widget within the grooved relief of the hull
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# frame for each of the 12 possible "-labelpos" values.
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#
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# Each of the 12 rows is layed out as follows:
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# {"-relx" "-rely" <rowconfigure|columnconfigure> <row/column number>}
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# -----------------------------------------------------------------------------
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itcl::body iwidgets::Labeledframe::_initTable {} {
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array set _LAYOUT_TABLE {
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nw-relx 0.0 nw-rely 0.0 nw-wrap 0 nw-conf rowconfigure nw-num 0
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n-relx 0.5 n-rely 0.0 n-wrap 0 n-conf rowconfigure n-num 0
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ne-relx 1.0 ne-rely 0.0 ne-wrap 0 ne-conf rowconfigure ne-num 0
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sw-relx 0.0 sw-rely 1.0 sw-wrap 0 sw-conf rowconfigure sw-num 2
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s-relx 0.5 s-rely 1.0 s-wrap 0 s-conf rowconfigure s-num 2
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se-relx 1.0 se-rely 1.0 se-wrap 0 se-conf rowconfigure se-num 2
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en-relx 1.0 en-rely 0.0 en-wrap 1 en-conf columnconfigure en-num 2
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e-relx 1.0 e-rely 0.5 e-wrap 1 e-conf columnconfigure e-num 2
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es-relx 1.0 es-rely 1.0 es-wrap 1 es-conf columnconfigure es-num 2
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wn-relx 0.0 wn-rely 0.0 wn-wrap 1 wn-conf columnconfigure wn-num 0
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w-relx 0.0 w-rely 0.5 w-wrap 1 w-conf columnconfigure w-num 0
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ws-relx 0.0 ws-rely 1.0 ws-wrap 1 ws-conf columnconfigure ws-num 0
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}
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#
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# Since this is a one time only thing, we'll redefine the proc to be empty
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# afterwards so it only happens once.
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#
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# NOTE: Be careful to use the "body" command, or the proc will get lost!
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#
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itcl::body ::iwidgets::Labeledframe::_initTable {} {}
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}
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# -----------------------------------------------------------------------------
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# METHODS
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# -----------------------------------------------------------------------------
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# -----------------------------------------------------------------------------
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# PUBLIC METHOD:: childsite
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#
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# -----------------------------------------------------------------------------
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itcl::body iwidgets::Labeledframe::childsite {} {
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return $itk_component(childsite)
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}
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# -----------------------------------------------------------------------------
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# PROTECTED METHOD: _positionLabel ?when?
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#
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# Places the label in the relief of the hull. If "when" is "now", the
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# change is applied immediately. If it is "later" or it is not
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# specified, then the change is applied later, when the application
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# is idle.
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# -----------------------------------------------------------------------------
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itcl::body iwidgets::Labeledframe::_positionLabel {{when later}} {
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if {$when == "later"} {
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if {$_reposition == ""} {
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set _reposition [after idle [itcl::code $this _positionLabel now]]
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}
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return
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}
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set pos $itk_option(-labelpos)
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#
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# If there is not an entry for the "relx" value associated with
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# the given "-labelpos" option value, then it invalid.
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#
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if { [catch {set relx $_LAYOUT_TABLE($pos-relx)}] } {
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error "bad labelpos option\"$itk_option(-labelpos)\": should be\
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nw, n, ne, sw, s, se, en, e, es, wn, w, or ws"
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}
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update idletasks
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$itk_component(label) configure -wraplength $_LAYOUT_TABLE($pos-wrap)
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set labelWidth [winfo reqwidth $itk_component(label)]
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set labelHeight [winfo reqheight $itk_component(label)]
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set borderwidth $itk_option(-borderwidth)
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set margin $itk_option(-labelmargin)
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switch $pos {
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nw {
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set labelThickness $labelHeight
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set minsize [expr {$labelThickness/2.0}]
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set xPos [expr {$minsize+$borderwidth+$margin}]
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set yPos -$minsize
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}
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n {
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set labelThickness $labelHeight
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|
|
set minsize [expr {$labelThickness/2.0}]
|
||
|
|
set xPos [expr {-$labelWidth/2.0}]
|
||
|
|
set yPos -$minsize
|
||
|
|
}
|
||
|
|
ne {
|
||
|
|
set labelThickness $labelHeight
|
||
|
|
set minsize [expr {$labelThickness/2.0}]
|
||
|
|
set xPos [expr {-($minsize+$borderwidth+$margin+$labelWidth)}]
|
||
|
|
set yPos -$minsize
|
||
|
|
}
|
||
|
|
|
||
|
|
sw {
|
||
|
|
set labelThickness $labelHeight
|
||
|
|
set minsize [expr {$labelThickness/2.0}]
|
||
|
|
set xPos [expr {$minsize+$borderwidth+$margin}]
|
||
|
|
set yPos -$minsize
|
||
|
|
}
|
||
|
|
s {
|
||
|
|
set labelThickness $labelHeight
|
||
|
|
set minsize [expr {$labelThickness/2.0}]
|
||
|
|
set xPos [expr {-$labelWidth/2.0}]
|
||
|
|
set yPos [expr {-$labelHeight/2.0}]
|
||
|
|
}
|
||
|
|
se {
|
||
|
|
set labelThickness $labelHeight
|
||
|
|
set minsize [expr {$labelThickness/2.0}]
|
||
|
|
set xPos [expr {-($minsize+$borderwidth+$margin+$labelWidth)}]
|
||
|
|
set yPos [expr {-$labelHeight/2.0}]
|
||
|
|
}
|
||
|
|
|
||
|
|
wn {
|
||
|
|
set labelThickness $labelWidth
|
||
|
|
set minsize [expr {$labelThickness/2.0}]
|
||
|
|
set xPos -$minsize
|
||
|
|
set yPos [expr {$minsize+$margin+$borderwidth}]
|
||
|
|
}
|
||
|
|
w {
|
||
|
|
set labelThickness $labelWidth
|
||
|
|
set minsize [expr {$labelThickness/2.0}]
|
||
|
|
set xPos -$minsize
|
||
|
|
set yPos [expr {-($labelHeight/2.0)}]
|
||
|
|
}
|
||
|
|
ws {
|
||
|
|
set labelThickness $labelWidth
|
||
|
|
set minsize [expr {$labelThickness/2.0}]
|
||
|
|
set xPos -$minsize
|
||
|
|
set yPos [expr {-($minsize+$borderwidth+$margin+$labelHeight)}]
|
||
|
|
}
|
||
|
|
|
||
|
|
en {
|
||
|
|
set labelThickness $labelWidth
|
||
|
|
set minsize [expr {$labelThickness/2.0}]
|
||
|
|
set xPos -$minsize
|
||
|
|
set yPos [expr {$minsize+$borderwidth+$margin}]
|
||
|
|
}
|
||
|
|
e {
|
||
|
|
set labelThickness $labelWidth
|
||
|
|
set minsize [expr {$labelThickness/2.0}]
|
||
|
|
set xPos -$minsize
|
||
|
|
set yPos [expr {-($labelHeight/2.0)}]
|
||
|
|
}
|
||
|
|
es {
|
||
|
|
set labelThickness $labelWidth
|
||
|
|
set minsize [expr {$labelThickness/2.0}]
|
||
|
|
set xPos -$minsize
|
||
|
|
set yPos [expr {-($minsize+$borderwidth+$margin+$labelHeight)}]
|
||
|
|
}
|
||
|
|
}
|
||
|
|
_setMarginThickness $minsize
|
||
|
|
|
||
|
|
place $itk_component(label) \
|
||
|
|
-relx $_LAYOUT_TABLE($pos-relx) -x $xPos \
|
||
|
|
-rely $_LAYOUT_TABLE($pos-rely) -y $yPos \
|
||
|
|
-anchor nw
|
||
|
|
|
||
|
|
set what $_LAYOUT_TABLE($pos-conf)
|
||
|
|
set number $_LAYOUT_TABLE($pos-num)
|
||
|
|
|
||
|
|
grid $what $itk_interior $number -minsize $minsize
|
||
|
|
|
||
|
|
set _reposition ""
|
||
|
|
}
|
||
|
|
|
||
|
|
# -----------------------------------------------------------------------------
|
||
|
|
# PROTECTED METHOD: _collapseMargin
|
||
|
|
#
|
||
|
|
# Resets the "-minsize" of all rows and columns of the hull's grid
|
||
|
|
# used to set the label margin to 0
|
||
|
|
# -----------------------------------------------------------------------------
|
||
|
|
itcl::body iwidgets::Labeledframe::_collapseMargin {} {
|
||
|
|
grid columnconfigure $itk_interior 0 -minsize 0
|
||
|
|
grid columnconfigure $itk_interior 2 -minsize 0
|
||
|
|
grid rowconfigure $itk_interior 0 -minsize 0
|
||
|
|
grid rowconfigure $itk_interior 2 -minsize 0
|
||
|
|
}
|
||
|
|
|
||
|
|
# -----------------------------------------------------------------------------
|
||
|
|
# PROTECTED METHOD: _setMarginThickness
|
||
|
|
#
|
||
|
|
# Set the margin thickness ( i.e. the hidden "-highlightthickness"
|
||
|
|
# of the hull ) to the input value.
|
||
|
|
#
|
||
|
|
# The "-highlightthickness" option of the hull frame is not intended to be
|
||
|
|
# configured by users of this class, but does need to be configured to properly
|
||
|
|
# place the label whenever the label is configured.
|
||
|
|
#
|
||
|
|
# Therefore, since I can't find a better way at this time, I achieve this
|
||
|
|
# configuration by: adding the "-highlightthickness" option back into
|
||
|
|
# the hull frame; configuring the "-highlightthickness" option to properly
|
||
|
|
# place the label; and then remove the "-highlightthickness" option from the
|
||
|
|
# hull.
|
||
|
|
#
|
||
|
|
# This way the option is not visible or configurable without some hacking.
|
||
|
|
#
|
||
|
|
# -----------------------------------------------------------------------------
|
||
|
|
itcl::body iwidgets::Labeledframe::_setMarginThickness {value} {
|
||
|
|
itk_option add hull.highlightthickness
|
||
|
|
$itk_component(hull) configure -highlightthickness $value
|
||
|
|
itk_option remove hull.highlightthickness
|
||
|
|
}
|
||
|
|
|
||
|
|
|