/**
 * Instant Slide Show
 * 
 * Takes whatever is selected in your library and puts it on the stage,
 * one item per layer, and cross-fades them together.
 * 
 */
 
 //You can change the number of frames for the fade-in/out here:
var slideDuration = 42; //how long to display the clip in frames
var fadeDuration = 10; // how long to fade in, in frames.


//===========================================//

//Get local references to useful variables.
var document = fl.getDocumentDOM();
var library = document.library;
var selItems = library.getSelectedItems();
var trace = fl.trace;
var slides = new Array();
//loop through our items and put them into clips which we can then animate.
//if the item is already a graphic/movieclip this step is ignored.
for(var i=0;i<selItems.length;i++){
	var item = selItems[i];
	if(item.itemType == "bitmap"){
		//create a name that we will use based off the bitmap.
		var clipName = "Clip_"+ item.name;
		item.allowSmoothing = true; //turn on smoothing, we probably want this.
		var clip = library.addNewItem("movie clip", clipName); //create the library item.
		slides.push(clipName); //add it to our array that we'll fix up later.
		library.editItem(clipName); // open the item for editing on the stage.
		var timeline = document.getTimeline(); // get the new timeline
		
		library.addItemToDocument({x:0, y:0}, item.name); //put an instance of our bitmap into the new movie clip.
		//get the image and move it to the top left corner.
		var image = document.selection[0];
		var matrix = image.matrix;
		matrix.tx = 0;
		matrix.ty = 0;
		image.matrix = matrix;
		
	}else if(item.itemType == "movie clip" || item.itemType == "graphic"){
		slides.push(item.name);
	}else{
		//ignore the selection, since we probably don't want to animate it.
	}
}
//ok we've now made all of our clips. lets go ahead and place them on the timeline.
document.editScene(0); //this edits the 'root'
var timeline = document.getTimeline();  //get a local ref

var frame = timeline.currentFrame+1; //start the slideshow at whereever the timeline's currently at.
//Go over each item and animate it in.
for(var i=0;i<slides.length;i++)
{
	//create layer
	var nLayer = timeline.addNewLayer(slides[i].substring(0, slides[i].length -4));
	//create keyframe
	timeline.currentLayer = nLayer;
	timeline.insertKeyframe(frame);
	
	//create item
	library.addItemToDocument({x:0,y:0}, slides[i]);
	var slide = document.selection[0];
	//move item
	var matrix = slide.matrix;
	matrix.tx = 0;
	matrix.ty = 0;
	slide.matrix = matrix;
	
	//create next keyframe.
	timeline.insertKeyframe(frame + fadeDuration);
	
	//then blank it. (alternatively you could  use insertFrames
	timeline.insertBlankKeyframe(frame + fadeDuration + slideDuration + 1);
	
	var slideStart = timeline.layers[nLayer].frames[frame].elements[0];
	slideStart.colorMode = "alpha"
	slideStart.colorAlphaPercent = 0;
	timeline.createMotionTween(frame);
	
	//increment our frame
	frame += slideDuration;
	
}
//Let the user know we're done.
trace("Created slideshow!");