Thread example 01 : Loading of image

そうめんを使って画像を読み込みサンプル。
*
* 画像はFlickrから、http://www.flickr.com/photos/auburnnewyork/3356082615/
*
* 読み込み状況がtraceされていますので、
* Flash tracerなどを入れている方は覗いてみてください。
*
* そうめん使うとソースが無駄に長い。
*

by paq 15 Mar 2009

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/*
 * 
 * そうめんを使って画像を読み込みサンプル。
 *
 * 画像はFlickrから、http://www.flickr.com/photos/auburnnewyork/3356082615/
 *
 * 読み込み状況がtraceされていますので、
 * Flash tracerなどを入れている方は覗いてみてください。
 *
 * そうめん使うとソースが無駄に長い。
 *
*/

package{
    import flash.display.Sprite;

    import org.libspark.thread.Thread;
    import org.libspark.thread.EnterFrameThreadExecutor;

    public class ThreadTest01 extends Sprite {
		
		public function ThreadTest01() {
			Thread.initialize(new EnterFrameThreadExecutor());
			
			var main:MainThread = new MainThread(this);
			main.start();
		}
		
	}
}

import flash.display.DisplayObjectContainer;
import flash.events.Event;
import org.libspark.thread.Thread;
import org.libspark.thread.utils.Executor;
import org.libspark.thread.utils.ParallelExecutor;
import org.libspark.thread.threads.display.LoaderThread;

import flash.net.URLRequest;
import flash.net.URLLoader;

import flash.errors.IOError;

class MainThread extends Thread {
	public function MainThread(l:DisplayObjectContainer) {
		_layer = l;
	}
	
	private var _loader:LoaderThread;
	private var _layer:DisplayObjectContainer;
	
	override protected function run():void{
		_loader = new LoaderThread(new URLRequest('http://farm4.static.flickr.com/3462/3356082615_b0749265f2.jpg?v=0'));
		
		var tracer:Thread = new ProgressTraceThread(_loader.progress);
		
		trace('begin loading.');
		
		_loader.start();
		_loader.join();
		
		tracer.start();
		
		next(executeComplete);

		error(IOError, errorHandler);
		error(SecurityError, errorHandler);
	}
	
	private function executeComplete():void{
		trace('complete loading.');
		_layer.addChild(_loader.loader);
	}
	
	protected override function finalize():void{
		_loader = null;
		
		trace('end.');
	}
	
	private function errorHandler(e:IOError, t:Thread):void{
		trace('error!!');
		
		trace(e.getStackTrace());
		next(null);
	}
}

import flash.events.Event;
import org.libspark.thread.Thread;
import org.libspark.thread.utils.events.ProgressEvent;
import org.libspark.thread.utils.IProgress;

class ProgressTraceThread extends Thread{
	public function ProgressTraceThread(progress:IProgress){
		_progress = progress;
	}
	
	private var _progress:IProgress;
	
	override protected function run():void{
		event(_progress, ProgressEvent.START, startHandler);
	}
	
	private function startHandler(e:Event):void{
		trace('[Progress] Start...');
		
		event(_progress, ProgressEvent.UPDATE, updateHandler);
		event(_progress, ProgressEvent.COMPLETED, completeHandler);
		event(_progress, ProgressEvent.FAILED, failedHandler);
		event(_progress, ProgressEvent.CANCELED, canceledHandler);
	}
	
	private function updateHandler(e:Event):void{
		trace('[Progress] ' + (_progress.percent * 100) + '%');
		
		event(_progress, ProgressEvent.UPDATE, updateHandler);
		event(_progress, ProgressEvent.COMPLETED, completeHandler);
		event(_progress, ProgressEvent.FAILED, failedHandler);
		event(_progress, ProgressEvent.CANCELED, canceledHandler);
	}
	
	private function completeHandler(e:Event):void{
		trace('[Progress] Complete');
	}
	
	private function failedHandler(e:Event):void{
		trace('[Progress] Failed');
	}
	
	private function canceledHandler(e:Event):void{
		trace('[Progress] Cancel');
	}
}