svn commit: r1380426 - in /incubator/flex/whiteboard/quetwo/ImageGate/trunk/ImageGate: ./ src/ src/org/ src/org/apache/ src/org/apache/components/ src/org/apache/components/ImageGate.as

[qu...@apache.org]

Author: quetwo
Date: Tue Sep  4 02:13:30 2012
New Revision: 1380426

URL: http://svn.apache.org/viewvc?rev=1380426&view=rev
Log:
Adding ImageGate component to my whiteboard

Added:
    incubator/flex/whiteboard/quetwo/ImageGate/trunk/ImageGate/
    incubator/flex/whiteboard/quetwo/ImageGate/trunk/ImageGate/src/
    incubator/flex/whiteboard/quetwo/ImageGate/trunk/ImageGate/src/org/
    incubator/flex/whiteboard/quetwo/ImageGate/trunk/ImageGate/src/org/apache/
    incubator/flex/whiteboard/quetwo/ImageGate/trunk/ImageGate/src/org/apache/components/
    incubator/flex/whiteboard/quetwo/ImageGate/trunk/ImageGate/src/org/apache/components/ImageGate.as

Added: incubator/flex/whiteboard/quetwo/ImageGate/trunk/ImageGate/src/org/apache/components/ImageGate.as
URL: http://svn.apache.org/viewvc/incubator/flex/whiteboard/quetwo/ImageGate/trunk/ImageGate/src/org/apache/components/ImageGate.as?rev=1380426&view=auto
==============================================================================
--- incubator/flex/whiteboard/quetwo/ImageGate/trunk/ImageGate/src/org/apache/components/ImageGate.as (added)
+++ incubator/flex/whiteboard/quetwo/ImageGate/trunk/ImageGate/src/org/apache/components/ImageGate.as Tue Sep  4 02:13:30 2012
@@ -0,0 +1,303 @@
+////////////////////////////////////////////////////////////////////////////////
+//
+//  Licensed to the Apache Software Foundation (ASF) under one or more
+//  contributor license agreements.  See the NOTICE file distributed with
+//  this work for additional information regarding copyright ownership.
+//  The ASF licenses this file to You under the Apache License, Version 2.0
+//  (the "License"); you may not use this file except in compliance with
+//  the License.  You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+//  Unless required by applicable law or agreed to in writing, software
+//  distributed under the License is distributed on an "AS IS" BASIS,
+//  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//  See the License for the specific language governing permissions and
+//  limitations under the License.
+//
+////////////////////////////////////////////////////////////////////////////////
+// Original component created by Dan Florio (http://www.polygeek.com), and donated
+// via Nick Kwiatkowski (quetwo) to the Apache Flex Project
+////////////////////////////////////////////////////////////////////////////////
+
+package org.apache.components
+{
+
+	import flash.display.Bitmap;
+	import flash.display.Loader;
+	import flash.events.Event;
+	import flash.events.IOErrorEvent;
+	import flash.filesystem.File;
+	import flash.filesystem.FileMode;
+	import flash.filesystem.FileStream;
+	import flash.net.URLLoader;
+	import flash.net.URLLoaderDataFormat;
+	import flash.net.URLRequest;
+	import flash.system.Capabilities;
+	import flash.utils.ByteArray;
+
+	import spark.primitives.BitmapImage;
+
+	public class ImageGate extends BitmapImage
+	{
+
+		private var _urlRequest:URLRequest;
+		private var _urlLoader:URLLoader;
+		private var _loader:Loader;
+		private var _fileStream:FileStream;
+
+		private var _url:String;
+		private var _filename:String;
+		private var _file:File;
+
+		private var _assetURL:String;
+		private var _assetURL160:String;
+		private var _assetURL240:String;
+		private var _assetURL320:String;
+
+		private var _localFolder:String;
+
+		public function ImageGate()
+		{
+			super();
+		}
+
+		private function findImage():void
+		{
+
+			/**
+			 *     The _localFolder must be set in order to proceed.
+			 */
+			if (_localFolder == null)
+			{
+				return;
+			}
+
+			var gotAllMultiScreenURLs:Boolean = false;
+
+			if (_assetURL160 != null
+					&& _assetURL240 != null
+					&& _assetURL320 != null)
+			{
+
+				gotAllMultiScreenURLs = true;
+			}
+
+			/**
+			 *     If we don't have either of the _assetURL or all of the
+			 *     multi-screen URLs then we can not proceed.
+			 */
+			if (_assetURL == null && !gotAllMultiScreenURLs)
+			{
+				return
+			}
+
+			if (_assetURL == '')
+			{
+				return
+			}
+
+			/**
+			 * Check to see what the _url is going to be for this particular image.
+			 *  -If _assetURL != null then use that url.
+			 *  -Otherwise find the correct _url based on the current screen resolution.
+			 */
+
+			if (_assetURL != null)
+			{
+				_url = _assetURL;
+			}
+			else if (Capabilities.screenDPI >= 280)
+			{
+				_url = _assetURL320
+			}
+			else if (Capabilities.screenDPI >= 200)
+			{
+				_url = _assetURL240
+			}
+			else
+			{
+				_url = _assetURL160
+			}
+
+			_filename = _url.substring(_url.lastIndexOf('/') + 1);
+
+			if (Capabilities.os.toLowerCase().indexOf('iphone') != -1 || Capabilities.os.toLowerCase().indexOf('ipad') != -1 || Capabilities.os.toLowerCase().indexOf('ipod') != -1)
+			{
+				// Store the downloaded files in the Cache directory on iOS devices only. This is to comply with the
+				// new AppStore guidelines that are in effect as of iOS 5.1
+				_file = new File(File.applicationDirectory.nativePath + "/\.\./Library/Caches").resolvePath(_localFolder + '/' + _filename);
+			}
+			else
+			{
+				// Store the downloaded files in the applicationStorage Directory.
+				_file = File.applicationStorageDirectory.resolvePath(_localFolder + '/' + _filename);
+			}
+
+			if (_file.exists)
+			{
+				var byteArray:ByteArray = new ByteArray();
+				_fileStream = new FileStream();
+				_fileStream.open(_file, FileMode.READ);
+				_fileStream.readBytes(byteArray);
+				_fileStream.close();
+				_fileStream = null;
+				_file = null;
+
+				_loader = new Loader();
+				_loader.contentLoaderInfo.addEventListener(Event.COMPLETE, onBytesLoaded);
+				_loader.loadBytes(byteArray);
+
+			}
+			else
+			{
+				downloadRemoteFile();
+			}
+		}
+
+		private function onBytesLoaded(e:Event):void
+		{
+			this.source = new Bitmap(e.target.content.bitmapData);
+			_loader.contentLoaderInfo.removeEventListener(Event.COMPLETE, onBytesLoaded);
+
+			// Cleanup
+			_loader = null;
+			_filename = null;
+		}
+
+
+		private function downloadRemoteFile():void
+		{
+			_urlLoader = new URLLoader();
+			_urlRequest = new URLRequest(_url);
+			_urlLoader.dataFormat = URLLoaderDataFormat.BINARY;
+			_urlLoader.addEventListener(Event.COMPLETE, onDownloadComplete);
+			_urlLoader.addEventListener(IOErrorEvent.IO_ERROR, onIOerror);
+			_urlLoader.load(_urlRequest);
+		}
+
+		private function onDownloadComplete(e:Event):void
+		{
+			var byteArray:ByteArray = _urlLoader.data;
+			_fileStream = new FileStream();
+			_fileStream.open(_file, FileMode.WRITE);
+			_fileStream.writeBytes(byteArray, 0, byteArray.length);
+			_fileStream.close();
+
+			_loader = new Loader();
+			_loader.contentLoaderInfo.addEventListener(Event.COMPLETE, onBytesLoaded);
+			_loader.loadBytes(byteArray);
+
+			// Cleanup
+			_urlLoader.close();
+			_urlLoader = null;
+			_fileStream = null;
+			_urlRequest = null;
+			_url = null;
+		}
+
+		private function onIOerror(e:IOErrorEvent):void
+		{
+			trace("image download error : " + _url + " : " + _filename);
+
+			// Cleanup
+			_urlLoader.close();
+			_urlLoader = null;
+			_fileStream = null;
+			_filename = null;
+		}
+
+		/*	************************************************************
+		 *	Setters
+		 *	************************************************************ */
+		public function set assetURL(value:String):void
+		{
+			if (_assetURL == value)
+			{
+				return;
+			}
+			_assetURL = value;
+
+			findImage();
+		}
+
+
+		public function set localFolder(value:String):void
+		{
+			if (_localFolder == value)
+			{
+				return;
+			}
+
+			_localFolder = value;
+
+			findImage();
+		}
+
+		public function set assetURL160(value:String):void
+		{
+			if (_assetURL160 == value)
+			{
+				return;
+			}
+
+			_assetURL160 = value;
+
+			findImage();
+		}
+
+
+		public function set assetURL240(value:String):void
+		{
+			if (_assetURL240 == value)
+			{
+				return;
+			}
+
+			_assetURL240 = value;
+
+			findImage();
+		}
+
+
+		public function set assetURL320(value:String):void
+		{
+			if (_assetURL320 == value)
+			{
+				return;
+			}
+
+			_assetURL320 = value;
+
+			findImage();
+		}
+
+		/*	************************************************************
+		 *	Getters
+		 *	************************************************************ */
+		public function get assetURL():String
+		{
+			return _assetURL;
+		}
+
+		public function get localFolder():String
+		{
+			return _localFolder;
+		}
+
+		public function get assetURL160():String
+		{
+			return _assetURL160;
+		}
+
+		public function get assetURL240():String
+		{
+			return _assetURL240;
+		}
+
+		public function get assetURL320():String
+		{
+			return _assetURL320;
+		}
+	}
+}
\ No newline at end of file