// Fireworks JavaScript Command
// Scales the document to fit inside a specified area, maintaining aspect ratio
// To use with batch process you can comment out "acquire user input" and "user input result" below, it will then use the WIDTH, HEIGHT params defined at the top
// Install by copying to Fireworks/Configuration/Commands/
// Aaron Beall 2009
// Version 1.0

var dom = fw.getDocumentDOM();
var sel = [].concat(fw.selection);

// params
var WIDTH = 250;
var HEIGHT = 250;

// scale to fit image in area with no border
function ScaleToFitArea(){
	// require active document
	if (!dom) return false;
	
	// acquire user input
	var input;
	do{
		input = prompt("Width, Height:",input||fw.ScaleToFitArea_input||[WIDTH,HEIGHT]);
		if(input==null) return false;
	}while(!validate());
	
	// user input result
	fw.ScaleToFitArea_input = input;
	WIDTH = Math.round(Number(input[0]));
	HEIGHT = Math.round(Number(input[1]));
	
	// validate user input
	function validate(){
		input = String(input).split(',');
		if(input.length != 2 && input.length != 1)
			return alert('Invalid input!');
		if(input.length == 1)
			input[1] = input[0];
		if(isNaN(Number(input[0])) || isNaN(Number(input[1])))
			return alert('Invalid input! Enter numeric values only.');
		if(Number(input[0]) < 0 || Number(input[1]) < 0)
			return alert('Invalid input! Enter positive values only.');
		return true;
	}
	
	// resize
	var currWidth = dom.width, currHeight = dom.height;
	var targetWidth, targetHeight, ratio;
	
	// maintain aspect ratio
	ratio = HEIGHT/currHeight;
	if(currWidth*ratio <= WIDTH){
		targetWidth = Math.round(currWidth*ratio);
		targetHeight = Math.round(currHeight*ratio);
	}else{
		ratio = WIDTH/currWidth;
		targetWidth = Math.round(currWidth*ratio);
		targetHeight = Math.round(currHeight*ratio);
	}
	
	// resize image
	dom.setDocumentImageSize({left:0, top:0, right:targetWidth, bottom:targetHeight}, {pixelsPerUnit:dom.resolution, units:dom.resolutionUnits}, false);
}

try{
ScaleToFitArea();
}catch(e){alert(['error',e.lineNumber])}