flash.overlay overlayVO

Author: Vladimir Demidov

flash/src/ru/mail/data/ImageFactory.as

@@ -5,7 +5,7 @@ package ru.mail.data
 	import flash.geom.Point;
 	import flash.geom.Rectangle;
 	import flash.utils.ByteArray;
-	
+
 	import ru.mail.commands.DecodeBytesToBitmapCommand;
 	import ru.mail.commands.LoadFileCommand;
 	import ru.mail.commands.ResizeFileCommand;
@@ -29,30 +29,36 @@ package ru.mail.data
 	public class ImageFactory extends EventDispatcher implements IImageFactory 
 	{
 		private var file:IFileVO;
-		
+
 		private var loadCommand:LoadFileCommand;
-		
+
+		private var isFileLoaded:Boolean = false;
+		private var isOverlayLoaded:Boolean = false;
+
 		public function ImageFactory(target:IFileVO)
 		{
 			if (!target) {
 				throw new Error("{ImageFactory} - init: target is null");
 			}
-			
+
 			file = target;
 		}
-		
+
 		public function createImage(imageTransform:ImageTransformVO):void {
+			isFileLoaded = false;
+			isOverlayLoaded = false;
+
 			if (!file.fileData) {
 				// first load file
 				if( file is FileVO) {
 					var loadFileCommand:LoadFileCommand = (file as FileVO).loadCommand? (file as FileVO).loadCommand as LoadFileCommand : new LoadFileCommand(file as FileVO);
-					
+
 					loadFileCommand.addEventListener(ImageTransformCompleteEvent.TYPE, function(event:ImageTransformCompleteEvent):void{
 						event.currentTarget.removeEventListener(event.type, arguments.callee);
 						trace ("loadCommand complete", event.isSuccess);
 						loadCommand = null;
 						if(event.isSuccess) {
-							checkImageData(imageTransform);
+							onLoadImageAndOverlay(true, imageTransform);
 						}
 						else {
 							complete( false, event.data, event.error );
@@ -64,15 +70,22 @@ package ru.mail.data
 				}
 			}
 			else {
-				checkImageData(imageTransform);
+				onLoadImageAndOverlay(true, imageTransform);
+			}
+
+			// check overlay
+			if ( imageTransform.overlay ) {
+				// todo: wait for all overlay images to load and then proceed
+
+				//onLoadImageAndOverlay(false, imageTransform);
 			}
 		}
-		
+
 		public function readExif():Object {
 			if (!file.fileData) {
 				return null;
 			}
-			
+
 			var exif:Object = {};
 			try {
 				var exifReader:ExifReader2 = new ExifReader2();
@@ -81,16 +94,23 @@ package ru.mail.data
 					// more info about orientation
 					// http://sylvana.net/jpegcrop/exif_orientation.html
 					var orientation:uint = uint(exifReader.getValue("Orientation"));
-					
+
 					exif["Orientation"] = orientation;
 				}
-				
+
 			} catch (e:Error) {
 				trace ("read exif error: "+ e);
 			}
 			return exif;
 		}
-		
+
+		private function onLoadImageAndOverlay(isFile:Boolean, imageTransform:ImageTransformVO):void
+		{
+			if (isFileLoaded && isOverlayLoaded) {
+				checkImageData(imageTransform);
+			}
+		}
+
 		/**
 		 * 1/2 Check if imageData has been loaded 
 		 * @param imageTransform
@@ -110,7 +130,7 @@ package ru.mail.data
 						file.imageData.copyPixels( event.decodedBitmap.bitmapData
 							, new Rectangle( 0, 0, event.decodedBitmap.width, event.decodedBitmap.height ), new Point( 0, 0 ));
 						event.decodedBitmap.bitmapData.dispose();
-						
+
 						createImageFromSource(imageTransform);
 					}
 					else {
@@ -123,7 +143,7 @@ package ru.mail.data
 				createImageFromSource(imageTransform);
 			}
 		}
-		
+
 		/**
 		 * 2/2 transform original imagedata 
 		 * @param imageTransform
@@ -152,7 +172,7 @@ package ru.mail.data
 				resizeCommand.execute();
 			}
 		}
-		
+
 		private function complete(isSuccess:Boolean, data:ByteArray, error:ErrorVO = null):void
 		{
 			trace ("imageFactory complete");

flash/src/ru/mail/data/vo/ImageTransformVO.as

@@ -10,7 +10,7 @@ package ru.mail.data.vo
 	{
 		public static const TYPE_PNG:String = 'image/png';
 		public static const TYPE_JPEG:String = 'image/jpeg';
-		
+
 		public var sx:Number = 0;
 		public var sy:Number = 0;
 		public var sw:Number = 0;
@@ -20,12 +20,13 @@ package ru.mail.data.vo
 		public var deg:Number = 0;
 		public var type:String = 'image/png'; // encoded image type
 		public var quality:Number = 1; // encode quality (jpeg only)
-		
+		public var overlay:Array = []; // array of OverlayVO instances
+
 		public function ImageTransformVO(sx:Number = 0, sy:Number = 0, sw:Number = 0, sh:Number = 0, dw:Number = 0, dh:Number = 0, deg:Number = 0
-										 , type:String = null, quality:Number = 1)
+										 , type:String = null, quality:Number = 1, overlay:Array)
 		{
 			super();
-			
+
 			if ( !isNaN(sx) )
 				this.sx = sx;
 			if ( !isNaN(sy) )
@@ -44,6 +45,26 @@ package ru.mail.data.vo
 				this.type = type;
 			if ( !isNaN(quality) )
 				this.quality = quality;
+			if ( overlay )
+				setOverlay( overlay );
+		}
+
+		/**
+		 * @private fill overlay array with value objects 
+		 * @param overlay
+		 * 
+		 */
+		private function setOverlay(overlay:Array):void
+		{
+			var item:Object;
+			var overlayVO:OverlayVO;
+			for (var i:uint = 0; i < overlay.length; i++) {
+				item = overlay[i];
+				if ( item ) {
+					overlayVO = new OverlayVO(item);
+					this.overlay.push(overlayVO);
+				}
+			}
 		}
 	}
 }

flash/src/ru/mail/data/vo/OverlayVO.as

@@ -0,0 +1,33 @@
+package ru.mail.data.vo
+{
+	import flash.display.BitmapData;
+
+	/**
+	 * Value object with params for overlay
+	 *  
+	 * @author demidov
+	 * 
+	 */	
+	public class OverlayVO
+	{
+		public var x:Number;
+		public var y:Number;
+		public var w:Number;
+		public var h:Number;
+		public var rel:uint;
+		public var opacity:Number;
+		public var src:String;
+		public var imageData:BitmapData;
+		
+		public function OverlayVO(item:Object)
+		{
+			this.x = item.x|0;
+			this.y = item.y|0;
+			this.w = item.w|0;
+			this.h = item.h|0;
+			this.rel = item.rel|0;
+			this.opacity = item.opacity||1;
+			this.src = src;
+		}
+	}
+}