# Ayam, a free 3D modeler for the RenderMan interface.
#
# Ayam is copyrighted 1998-2001 by Randolf Schultz
# (randolf.schultz@gmail.com) and others.
#
# All rights reserved.
#
# See the file License for details.

# prog.tcl - this file implements a progress bar
# code taken from Donald K. Fellows (dkf) Megawidget and Dialog Stuff:
# http://www.cs.man.ac.uk/~fellowsd/tcl/mwidx.html
# (because Jeffrey Hobbs progressbar.tcl is unnecessary big/complex)

option add *Progress.undoneForeground black  widgetDefault
option add *Progress.undoneBackground white  widgetDefault
option add *Progress.doneForeground   white  widgetDefault
option add *Progress.doneBackground   blue4 widgetDefault
option add *Progress.borderWidth      1      widgetDefault
option add *Progress.relief           sunken widgetDefault

namespace eval dkfprogress {
    namespace export Progress SetProgress

    proc Progress {w args} {
	uplevel 1 [list frame $w -class Progress] $args

	foreach {val} {
	    undoneForeground doneForeground
	    undoneBackground doneBackground
	} {
	    set class [string toupper [string index $val 0]\
		    ][string range $val 1 end]
	    set $val [option get $w $val $class]
	}

	set varname [namespace current]::progressPercent($w)

	frame $w.l -borderwidth 0 -background $undoneBackground
	label $w.l.l -textvariable $varname -borderwidth 0 \
		-foreground $undoneForeground -background $undoneBackground
	$w.l configure -height [expr {int([winfo reqheight $w.l.l]+2)}]
	frame $w.l.fill -background $doneBackground
	label $w.l.fill.l -textvariable $varname -borderwidth 0 \
		-foreground $doneForeground -background $doneBackground

	bind $w.l <Configure> [namespace code [list ProgressConf $w "%w"]]

	pack $w.l -fill both -expand 1
	place $w.l.l -relx 0.5 -rely 0.5 -anchor center
	place $w.l.fill -x 0 -y 0 -relheight 1 -relwidth 0
	place $w.l.fill.l -x 0 -rely 0.5 -anchor center

	SetProgress $w 0
	return $w
    }

    proc ProgressConf {w width} {
	place conf $w.l.fill.l -x [expr {int($width/2)}]
    }

    proc SetProgress {win value {range 100}} {
	set progress [expr {int(100*$value)/int($range)}]
	set relwidth [expr {double($value)/double($range)}]

	variable progressPercent
	place conf $win.l.fill -relwidth $relwidth
	set progressPercent($win) "${progress}%"
    }
}

namespace import dkfprogress::Progress dkfprogress::SetProgress

