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copied!<p>this is a picker i use myself, hope it'll be useful:<br/></p> <pre><code>package lazylib.ui.generated { import flash.display.Bitmap; import flash.display.BitmapData; import flash.display.Sprite; import flash.display.GradientType; import flash.events.MouseEvent; import flash.geom.ColorTransform; import flash.geom.Matrix; import lazylib.broadcast.evts.ColorEvent; import lazylib.broadcast.Radio; /** * ... * @author www0z0k */ public class Picker extends Sprite { private var bmpc: Bitmap; private var bmp:BitmapData; private var id:String; private var w:int; private var h:int; public static const COLOR_PICKED_EVT_TYPE: String = 'picked by picker'; public function Picker(_id:String, _w:int = 256, _h:int = 256, _x:int = 0, _y:int = 0) { id = _id; w = _w; h = _h; x = _x; y = _y; bmp = new BitmapData(w, h); bmpc = new Bitmap(bmp); addChild(bmpc); refillBmp(0x7f7f7f); } public function get ID():String { return id; } private function refillBmp(overColor:int = 0x7f7f7f, alphaStep:Number = 0.006):void { var rtspr:Sprite = new Sprite(); var spr:Sprite = new Sprite(); var colors:Array = new Array(0xff0000,0xff7f00,0xffff00,0x7fff00,0x00ff00, 0x00ff7f, 0x00ffff,0x007fff,0x0000ff, 0x7f00ff,0xff00ff, 0xff007f, 0xff0000); var alphas: Array = new Array(1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1); var ratios: Array = new Array(10, 30, 50, 70, 90, 110, 130, 150, 170, 190, 210, 230, 250); var matrix:Matrix = new Matrix(); matrix.createGradientBox(w, h); spr.graphics.beginGradientFill(GradientType.LINEAR, colors, alphas, ratios, matrix); spr.graphics.drawRect(0, 0, w, h); spr.graphics.endFill(); rtspr.addChild(spr); var spr2:Sprite = new Sprite(); rtspr.addChild(spr2); var startA: Number = 1; for (var i:int = 0; startA > 0; i++) { startA -= alphaStep;//orig 0.004!!! spr2.graphics.lineStyle(1, overColor, startA); spr2.graphics.moveTo(0, h - i); spr2.graphics.lineTo(w, h - i); } bmp.draw(rtspr, new Matrix()); graphics.beginFill(0, 0); graphics.drawRect(0, 0, w, h); graphics.endFill(); buttonMode = true; addEventListener(MouseEvent.CLICK, onClick); } public function adjustDarkness(percent:int):void { var colorValue: int = int(255 * percent / 100); var currentGray:int = colorValue + colorValue << 8 + colorValue << 16; refillBmp(colorValue); } private function onClick(e:MouseEvent):void { var col: int = bmp.getPixel(e.localX, e.localY); Radio.broadcast(new ColorEvent(COLOR_PICKED_EVT_TYPE + id, col)); dispatchEvent(new ColorEvent(COLOR_PICKED_EVT_TYPE + id, col)); } } } </code></pre> <p><code>Radio</code> is a global dispatcher class (posted <a href="https://stackoverflow.com/questions/4040300/as3-flex-4-most-practical-way-to-find-nested-children/4046561#4046561">here</a> if you need it), <code>ColorEvent</code> is just an event with an <code>int</code> <em>color</em> field, <code>adjustDarkness</code> is usually called from an external scrollbar. Let me know if a working example is needed. </p>

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