#! /usr/NeWS/bin/psh
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systemdict /Item known not { (NeWS/liteitem.ps) run } if
/LabelFont /Times-Bold findfont 14 scalefont def

/barWidth 256 def
/barHeight 30 def
/range 100 def

/red 1 def /blu 1 def /gre 1 def
/paintBox { can setcanvas gsave 338 75 63 63 rectpath
 red blu gre setrgbcolor fill grestore} def
/notify { (Notify: Value=%) [ItemValue] /printf messages send } def
/setNP {/DefaultRootGrayOrColor red blu gre rgbcolor store PaintRoot} def
/redNP { /red ItemValue range div store paintBox paintBlu paintGre} def
/bluNP { /blu ItemValue range div store paintBox paintRed paintGre} def
/greNP { /gre ItemValue range div store paintBox paintRed paintBlu} def
/FillColor  1 1 1 rgbcolor def

/paintRGB { paintRed paintBlu paintGre } def
/paintRed {
	items /RedSlide get /ItemCanvas get setcanvas
	0 1 barWidth
	  {
		/x exch def
		/val x barWidth div def
		x 2 add 0 moveto val blu gre rgbcolor setcolor 0 22 rlineto stroke
	  } for
} def
/paintBlu {
	items /BluSlide get /ItemCanvas get setcanvas
	0 1 barWidth
	  {
		/x exch def
		/val x barWidth div def
		x 2 add 0 moveto red val gre rgbcolor setcolor 0 22 rlineto stroke
	  } for
} def
/paintGre {
	items /GreSlide get /ItemCanvas get setcanvas
	0 1 barWidth
	  {
		/x exch def
		/val x barWidth div def
		x 2 add 0 moveto red blu val rgbcolor setcolor 0 22 rlineto stroke
	  } for
} def

/createitems {
/items 50 dict dup begin
    
    /setButton (set) /setNP can 63 63 /new ButtonItem send
        dup /ItemBorderColor .5 .5 .5 rgbcolor put
        338 3 /move 3 index send def
    /RedSlide   () [0 range range] /Top /redNP can barWidth barHeight
    	/new SliderItem send 73 103 /move 3 index send def
    /BluSlide () [0 range range] /Top /bluNP can barWidth barHeight
    	/new SliderItem send 73 53 /move 3 index send def
    /GreSlide  () [0 range range] /Top /greNP can barWidth barHeight
    	/new SliderItem send 73 3 /move 3 index send def
        
end def
} def

/main {
    /win framebuffer /new LiteWindow send def	% Create a window
    {	
		/FrameLabel	(R B G    B a c k g r o u n d) def
		/PaintClient {
			gsave
			FillColor fillcanvas items paintitems
    		LabelFont setfont
			0 setgray		
			5 105 moveto (Red) show
			5  55 moveto (Blue) show
			5   5 moveto (Green) show
			paintBox
			paintRGB
			stroke
			grestore
		} def
    } win send						% Install my stuff.
%   200 200 412 155 /reshape win send			% Shape it.
    200 200 452 175 /reshape win send			% Shape it.
    /can win /ClientCanvas get def			% Get the window canvas
    
    createitems
    
    /map win send		% Map the window & install window event manager.
    /itemmgr items forkitems def
} def

main