# -*- mode: TCL; fill-column: 75; tab-width: 8; coding: iso-latin-1-unix -*-

#

#	$Id: LabWidg.tcl,v 1.3 2001/12/09 05:04:02 idiscovery Exp $

#

# LabWidg.tcl --

#

#	TixLabelWidget: Virtual base class. Do not instantiate

#

# 	This widget class is the base class for all widgets that has a

# 	label. Most Tix compound widgets will have a label so that

# 	the app programmer doesn't need to add labels themselvel.

#

#

# Copyright (c) 1993-1999 Ioi Kim Lam.

# Copyright (c) 2000-2001 Tix Project Group.

#

# See the file "license.terms" for information on usage and redistribution

# of this file, and for a DISCLAIMER OF ALL WARRANTIES.

#

# LabelSide : top, left, right, bottom, none, acrosstop

#

# public widgets:

#	frame, label

#

tixWidgetClass tixLabelWidget {

    -superclass tixPrimitive

    -classname  TixLabelWidget

    -flag {

	-label -labelside -padx -pady

    }

    -static {-labelside}

    -configspec {

	{-label label Label ""}

	{-labelside labelSide LabelSide left}

	{-padx padX Pad 0}

	{-pady padY Pad 0}

    }

}

proc tixLabelWidget:ConstructWidget {w} {

    upvar #0 $w data

    tixChainMethod $w ConstructWidget

    if {$data(-labelside) != "acrosstop"} {

	set data(w:frame) [frame $w.frame]

    } else {

	set data(pw:border) [frame $w.border]

	set data(pw:pad)    [frame $w.border.pad]

	set data(w:frame)   [frame $w.border.frame]

    }

    if {$data(-labelside) != "none"} {

	set data(w:label) [label $w.label -text $data(-label)]

    }

    tixLabelWidget:Pack $w

    tixCallMethod $w ConstructFramedWidget $data(w:frame)

}

proc tixLabelWidget:ConstructFramedWidget {w frame} {

    # Do nothing

}

proc tixLabelWidget:Pack {w} {

    upvar #0 $w data

    if {[catch {tixLabelWidget:Pack-$data(-labelside) $w}]} {

	error "unknown -labelside option \"$data(-labelside)\""

    }

}

proc tixLabelWidget:Pack-acrosstop {w} {

    upvar #0 $w data

    set labHalfHeight [expr [winfo reqheight $data(w:label)] / 2]

    set padHeight [expr $labHalfHeight - [$data(pw:border) cget -bd]]

    if {$padHeight < 0} {

	set padHeight 0

    }

    tixForm $data(w:label) -top 0 -left 4\

	-padx [expr $data(-padx) +4] -pady $data(-pady)

    tixForm $data(pw:border) -top $labHalfHeight -bottom -1 \

	-left 0 -right -1 -padx $data(-padx) -pady $data(-pady)

    tixForm $data(pw:pad) -left 0 -right -1 \

	-top 0 -bottom $padHeight

    tixForm $data(w:frame) -top $data(pw:pad) -bottom -1 \

	-left 0 -right -1

}

proc tixLabelWidget:Pack-top {w} {

    upvar #0 $w data

    pack $data(w:label) -side top \

	-padx $data(-padx) -pady $data(-pady) \

	-fill x

    pack $data(w:frame) -side top \

	-padx $data(-padx) -pady $data(-pady) \

	-expand yes -fill both

}

proc tixLabelWidget:Pack-bottom {w} {

    upvar #0 $w data

    pack $data(w:label) -side bottom \

	-padx $data(-padx) -pady $data(-pady) \

	-fill x

    pack $data(w:frame) -side bottom \

	-padx $data(-padx) -pady $data(-pady) \

	-expand yes -fill both

}

proc tixLabelWidget:Pack-left {w} {

    upvar #0 $w data

    pack $data(w:label) -side left \

	-padx $data(-padx) -pady $data(-pady) \

	-fill y

    pack $data(w:frame) -side left \

	-padx $data(-padx) -pady $data(-pady) \

	-expand yes -fill both

}

proc tixLabelWidget:Pack-right {w} {

    upvar #0 $w data

    pack $data(w:label) -side right \

	-padx $data(-padx) -pady $data(-pady) \

	-fill x

    pack $data(w:frame) -side right \

	-padx $data(-padx) -pady $data(-pady) \

	-expand yes -fill both

}

proc tixLabelWidget:Pack-none {w} {

    upvar #0 $w data

    pack $data(w:frame)\

	-padx $data(-padx) -pady $data(-pady) \

	-expand yes -fill both

}

#----------------------------------------------------------------------

#                           CONFIG OPTIONS

#----------------------------------------------------------------------

proc tixLabelWidget:config-label {w value} {

    upvar #0 $w data

    $data(w:label) config -text $value

    if {$data(-labelside) == "acrosstop"} {

	tixLabelWidget:Pack-acrosstop $w

    }

}