public class Captcha extends Canvas { private const CAPTCHA_WIDTH:uint = 120; private const CAPTCHA_HEIGHT:uint = 40; private var _securitycode:String; public function Captcha(type:String,counter:Number):void { // Set CAPTCHA Code _securitycode = randString(type, counter); generateDots(); generatePolys(3); drawLines(0, 0, (CAPTCHA_WIDTH)-1, (CAPTCHA_HEIGHT)-1, 5, 5); displayCode(_securitycode); this.width = CAPTCHA_WIDTH; this.height = CAPTCHA_HEIGHT; this.horizontalScrollPolicy = "off"; this.verticalScrollPolicy = "off"; var largeMask:UIComponent = new UIComponent(); largeMask.graphics.beginFill(0x00FFFF, 0.5); largeMask.graphics.drawRect(0, 0, CAPTCHA_WIDTH, CAPTCHA_HEIGHT); largeMask.graphics.endFill(); largeMask.x = 0; largeMask.y = 0; this.addChild(largeMask); this.mask = largeMask; } // Generate random security code private function randString(type:String,counter:int):String { var i:int=1; var randStr:String=""; var randNum:int=0; var useList:String=""; var alphaChars:String="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"; var secure:String="!@$%&*-_=+?~"; for (i = 1; i <= counter; i++) { if (type == "alphaChars") { useList=alphaChars; } else if (type == "alphaCharsnum") { useList=alphaChars+"0123456789"; } else if (type == "secure") { useList=alphaChars+"0123456789"+secure; } else { useList="0123456789"; } randNum=Math.floor(Math.random()*useList.length); randStr=randStr+useList.charAt(randNum); } return randStr; } // Generate Random Dots public function generateDots():void { for (var a:int=0; a < 1000; a++) { var tmpComponent:UIComponent = new UIComponent(); var X:int = Math.floor(Math.random()*CAPTCHA_WIDTH); var Y:int = Math.floor(Math.random()*CAPTCHA_HEIGHT); tmpComponent.graphics.lineStyle(Math.floor(Math.random()*5), RGBToHex(Math.floor(Math.random()*255), Math.floor(Math.random()*255), Math.floor(Math.random()*255)), 100); tmpComponent.graphics.moveTo(X, Y); tmpComponent.graphics.lineTo(X+1, Y); this.addChild(tmpComponent); } } // Converts color values from RGB to Hex private function RGBToHex (r:uint, g:uint, b:uint):uint { var hex:uint = r << 16 ^ g << 8 ^ b; return hex; } // Generate One Polygon private function generateOnePoly(sides:uint, radius:uint, color:uint):UIComponent { var tmpCmp:UIComponent = new UIComponent(); var DSides:uint = Math.floor(360/sides); //Highest transparency is 100 - default is 50 tmpCmp.graphics.beginFill(color, 50); var cnt:int = -1; while (++cnt < sides) { var X:int = Math.floor(radius*Math.sin(DSides*cnt/180*Math.PI)); var Y:int = Math.floor(radius*Math.cos(DSides*cnt/180*Math.PI)); if (!cnt) { tmpCmp.graphics.moveTo(X, Y); } else { tmpCmp.graphics.lineTo(X, Y); } } return tmpCmp; } public function generatePolys(no:uint):void { for (var i:uint = 0; i < no; i++) { var tmpComponent:UIComponent = new UIComponent(); var tmpRadius:int = Math.floor(Math.random()*40)+10; tmpComponent = generateOnePoly(Math.floor(Math.random()*6)+3, tmpRadius, RGBToHex(Math.floor(Math.random()*255), Math.floor(Math.random()*255), Math.floor(Math.random()*255))); tmpComponent.x = Math.floor(Math.random()*CAPTCHA_WIDTH); tmpComponent.y = Math.floor(Math.random()*CAPTCHA_HEIGHT); tmpComponent.rotation = Math.floor(Math.random()*360); tmpComponent.alpha = 0.3; this.addChild(tmpComponent); } } // Generate Background Lines private function drawLines(x:int, y:int, wi:int, hi:int, r:int, c:int):void { var tmpComponent:UIComponent = new UIComponent(); // (width, 0xHEXCOLOR, transparency) tmpComponent.graphics.lineStyle(1, 0x333333, 100); var i:int = 0; var xd:Number = wi/c; var yd:Number = hi/r; for (i=0; i<= r; i++) { var yy:Number = y+i*yd; tmpComponent.graphics.moveTo(x+wi, yy); tmpComponent.graphics.lineTo(x, yy); } for (var j:int=0; j < c; j++) { var xx:Number = x+j*xd; tmpComponent.graphics.lineTo(xx, y); tmpComponent.graphics.lineTo(xx+xd, y+hi); } tmpComponent.graphics.lineTo(x+wi, y); this.addChild(tmpComponent); } private function displayCode(code:String):void { var tmpText:Label = new Label(); tmpText.text = code; tmpText.width = CAPTCHA_WIDTH; tmpText.height = CAPTCHA_HEIGHT; tmpText.setStyle("fontSize",30); tmpText.setStyle("horizontalCenter",0); tmpText.setStyle("verticalCenter",0); this.addChild(tmpText); } public function get securitycode():String { return this._securitycode; } }
The class can generate three types of captcha codes: - alphaCharsnum - secure: alphaCharsnum and also !@$%&*-_=+?~ chars - default: numbers To generate a captcha:To retrieve the generated code for comparison:private var _captcha:Captcha = new Captcha("alphaChars",7);private var _securityCode:String = _captcha.securitycode;
<mx:DateFormatter id="formatDateTime" formatString="EEEE, MMM. D, YYYY at H:NN:SS A"/> |
| Pattern | Example |
| Year | |
| YY | 09 (Year Number Short) |
| YYY | 2009 (Year Number Full) |
| YYYY | 02009 (I have no clue why you would need this) |
| Month | |
| M | 7 (Month Number Short) |
| MM | 07 (Month Number Full) |
| MMM | Jul (Month Name Short) |
| MMMM | July (Month Name Full) |
| Day | |
| D | 4 (Day Number Short) |
| DD | 04 (Day Number Full) |
| Day Name | |
| E | 1 (Day Number Short) |
| EE | 01 (Day Number Full) |
| EEE | Mon (Day Name Short) |
| EEEE | Monday (Day Name Full) |
| A | AM/PM |
| J | Hour in day (0-23) |
| H | Hour in day (1-24) |
| K | Hour in AM/PM (0-11) |
| L | Hour in AM/PM(1-12) |
| N | 3 (Minutes) |
| NN | 03 (Minutes) |
| SS | 30 (Seconds) |
package { import flash.events.Event;
import mx.core.FlexGlobals; import mx.events.CloseEvent; import mx.events.FlexEvent; import mx.logging.ILogger; import mx.managers.PopUpManager;
import spark.components.TitleWindow; import spark.events.TitleWindowBoundsEvent;
/** * This TitleWindow is designed so that the window cannot be dragged outside * the boundaries of the application. This component is made to be opened with <code>PopUpManager</code> * so that when it is closed, it will be removed from <code>PopUpManager</code>. * @author rrubalcava */ public class PopUpWindow extends TitleWindow { public function PopUpWindow() { super(); this.addEventListener(FlexEvent.CREATION_COMPLETE, onCreationComplete_handler, false, 0, true); this.addEventListener(CloseEvent.CLOSE, onCloseClicked_handler, false, 0, true); this.addEventListener(TitleWindowBoundsEvent.WINDOW_MOVE, onTitleWindowMove_handler, false, 0, true); }
/** * Right position of window when it opens. * @default */ public var popupRight:Number; /** * Left position of window when it opens. * @default */ public var popupTop:Number;
/** * X postion of window when it opens. * @default */ public var popupX:Number; /** * Y postion of window when it opens. * @default */ public var popupY:Number;
/** * Will remove all elements and this window from <code>PopUpManager</code>. * @param e */ protected function onCloseClicked_handler(e:CloseEvent):void { this.removeEventListener(CloseEvent.CLOSE, onCloseClicked_handler);
this.removeAllElements(); PopUpManager.removePopUp(this); }
/** * Will assign given position assignments when window is created. * @param e */ protected function onCreationComplete_handler(e:FlexEvent):void { this.removeEventListener(FlexEvent.CREATION_COMPLETE, onCreationComplete_handler); if (popupX > 0) this.x = popupX; else if (popupRight > 0) this.right = popupRight; if (popupY > 0) this.y = popupY; else if (popupTop > 0) this.top = popupTop; }
/** * Repositions window so that it cannot be dragged outside of <code>Application</code> area. * @param event */ protected function onTitleWindowMove_handler(event:Event):void { var w:Number = FlexGlobals.topLevelApplication["width"]; var h:Number = FlexGlobals.topLevelApplication["height"]; if (this.x < 0) this.x = 5; if (this.y < 0) this.y = 5; if (this.x > w - 25) this.x = w - this.width; if (this.y > h - 25) this.y = h - this.height; } }}