#console show
package require Tkzinc 3.3
package require zincGraphics
namespace eval ::ix {
    variable _
    proc nobfloat {path t num} {
	variable _
	$path itemconfigure $t:num -text $num
	pd [concat $t.rp _cb $num \;]
	set _($t:num) $num
    }
    proc nob_mover {w t f x y} {
	variable _
	if {$::ix::_($t:clickd) > 0} {
	    set move [expr (($x - $::ix::_($t:lx)) + (-1 * ($y - $::ix::_($t:ly)))) / ([winfo width $w].0 + [winfo height $w].0) * $f]
	    nob_move $w $t $move
	}
	set ::ix::_($t:clickd) 1
	set ::ix::_($t:lx) $x
	set ::ix::_($t:ly) $y	
    }
    proc nob_move {w t move} {
	variable _
	set on [$w itemcget $t:num -text]
	set no [expr $on + $_($t:range) * $move * 2]
	if {$_($t:min) != $_($t:max)} {
	    if {$no > $_($t:max)} {set no $_($t:max);set move 0}
	    if {$no < $_($t:min)} {set no $_($t:min);set move 0}
	}
	nobfloat $w $t $no
	foreach e {1 10 100} {
	    set a [expr [$w itemcget $t:nob$e -startangle] + int($move * $e * 90)]
	    $w itemconfigure $t:nob$e -startangle $a
	    set _($t:a$e) $a
	}	
    }

    proc nob {path t w h range bg c1 c2 c3 cn trans th nx ny max min} {
	variable _
	set _($t:lx) 32
	set _($t:clickd) -1
	set _($t:max) $max
	set _($t:min) $min
	if {$_($t:min) != $_($t:max)} {
	    set _($t:range) [expr abs($min - $max)]
	} else {
	    set _($t:range) $range
	}
	if {[winfo exists $path.nob] != 1} {
	    zinc $path.nob -render 1 -width $w -height $h -borderwidth 1 -lightangle 140 -backcolor $bg
	    $path configure -width $w -height $h
	    place $path.nob -anchor nw -relwidth 1 -relheight 1
	    $path.nob remove *
	    set i 0
	    set colors [list $c1 $c2 $c3]
	    set ratios {1 10 0.1}
	    set edge 10
	    $path.nob add rectangle 1 {1 1 8 4} -filled 1 -fillcolor "#555555"
	    $path.nob add rectangle 1 "1 $h 8 [expr $h - 5]" -filled 1 -fillcolor "#555555"
	    foreach e {1 10 100} {
		$path.nob add arc 1 \
		    "[expr $w / $edge / ($i + 1) + ($edge / 2)] [expr $h / $edge / ($i + 1) + ($edge / 2)] [expr $w - $w / $edge / ($i + 1) - ($edge / 2)] [expr $h - $h / $edge / ($i + 1) - ($edge / 2)]" \
		    -closed 0 -filled 0 -extent [expr int(300 / $e)] -startangle 90 \
		    -linecolor "[lindex $colors $i];$trans" \
		    -linewidth [expr int($h / $th)] \
		    -tags $t:nob$e
		bind $path.nob <B[expr $i + 1]-Motion> \
		    "::ix::nob_mover $path.nob $t [lindex $ratios $i] %x %y"
		incr i
		bind $path.nob <ButtonRelease-$i> "set ::ix::_($t:clickd) -1"
	    }
	    bind $path <MouseWheel> {::ix::nob_move %W.nob [winfo name %W] [expr %D / 2400.]}
	    bind $path <Shift-MouseWheel> {::ix::nob_move %W.nob [winfo name %W] [expr %D / 24000.]}
	    bind $path <Control-MouseWheel> {::ix::nob_move %W.nob [winfo name %W] [expr %D / 240.]}
	    bind $path.nob <Shift-B1-Motion> "::ix::nob_mover $path.nob $t 10 %x %y"
	    bind $path.nob <Control-B1-Motion> "::ix::nob_mover $path.nob $t 0.1 %x %y"
	    if {$nx == 0} {
		set nx [expr $w / 2]
		set ny [expr $h - 20]
	    }
	    $path.nob add text 1 -text "0.0" \
		-position "$nx $ny" -tags $t:num -color "$cn;$trans"
	}
	if {[info exists _($t:num)]} {
	    $path.nob itemconfigure $t:num -text $_($t:num)
	    foreach e {1 10 100} {
		$path.nob itemconfigure $t:nob$e -startangle $_($t:a$e)
	    }
	} else {
	    foreach e {1 10 100} {set _($t:a$e) 90}
	    set _($t:num) 0.0}

    }
}
#> nob frame
#. -height 128 -width 128 -bd 1 -bg "#cccccc"
#. -highlightbackground red
#. #max 0 #min 0
#. #w 128 #h 128 #trans 70 #th 5 #range 100 #nx 0 #ny 0
#. #bg purple #ca blue #cb yellow #cc green #cn orange
#. @float ::ix::nobfloat .-.nob .| .#1
#. @cmd eval ".-.nob .#args"
bind .- <Enter> {focus .-}
bind .- <Leave> {focus .^.c}
::ix::nob .- .| .#w .#h .#range .#bg .#ca .#cb .#cc .#cn .#trans .#th .#nx .#ny .#max .#min