Titanium Circular Progress Bar

circularprogressbar.js

var win = Ti.UI.createWindow({
	width:'100%',
	height:'100%'
});
win.open();

function circularProgressBar(options)
{
	var opts = options;
	if (opts.percent == null || opts.percent > 1 || opts.percent < 0) opts.percent = 1;
	if (opts.size == null) opts.size = 46;
	if (opts.margin == null) opts.margin = 4;
	if (opts.backgroundColor == null) opts.backgroundColor = '#fff';
	if (opts.progressColor == null) opts.progressColor = '#4ba818';
	if (opts.topper == null) opts.topper = {};
	if (opts.topper.color == null) opts.topper.color = '#fff';
	if (opts.topper.size == null) opts.topper.size = 36;
	if (opts.font == null) opts.font = {};
	if (opts.font.visible == null) opts.font.visible = true;
	if (opts.font.size == null) opts.font.size = 12;
	if (opts.font.color == null) opts.font.color = '#900';
	if (opts.font.shadowColor == null) opts.font.shadowColor = '#aaa';
	if (opts.font.shadowRadius == null) opts.font.shadowRadius = 1;
	if (opts.font.shadowOffset == null) opts.font.shadowOffset = {};
	if (opts.font.shadowOffset.x == null) opts.font.shadowOffset.x = 0;
	if (opts.font.shadowOffset.y == null) opts.font.shadowOffset.y = 1;
	
	var mainHolder = Ti.UI.createView({
		left: options.left,
		right: options.right,
		top: options.top,
		bottom: options.bottom,
		width: opts.size + opts.margin,
		height: opts.size + opts.margin,
		borderRadius: (opts.size + opts.margin) / 2,
		backgroundColor: opts.backgroundColor
	});
	
	var holder = Ti.UI.createView({
		width: opts.size,
		height: opts.size,
		borderRadius: opts.size / 2
	});
	
	
	var layer1 = Ti.UI.createView({
	    width: opts.size,
	    height: opts.size,
	    borderRadius: opts.size / 2,
	    backgroundColor: opts.progressColor
	});
	
	var layer2 = Ti.UI.createView({
		left: 0,
		width: opts.size / 2,
		height: opts.size,
		anchorPoint: {
			x: 1,
			y: 0.5
		},
		backgroundColor: opts.backgroundColor
	});
	
	var layer3 = Ti.UI.createView({
		right: 0,
		width: opts.size / 2,
		height: opts.size,
		anchorPoint: {
			x: 0,
			y: 0.5
		},
		backgroundColor: opts.backgroundColor
	});
	
	var layer4 = Ti.UI.createView({
		right: 0,
		width: opts.size / 2,
		height: opts.size,
		anchorPoint: {
			x: 0,
			y: 0.5
		},
		backgroundColor: opts.progressColor
	});
	
	var topper = Ti.UI.createView({
		width: opts.topper.size,
		height: opts.topper.size,
		borderRadius: opts.topper.size / 2,
		backgroundColor: opts.topper.color
	});
	
	var percentText = Ti.UI.createLabel({
		visible: opts.font.visible,
		width: Ti.UI.SIZE,
		height: Ti.UI.SIZE,
		color: opts.font.color,
		font: {
			fontSize:opts.font.size
		},
		shadowColor: opts.font.shadowColor,
		shadowRadius: opts.font.shadowRadius,
		shadowOffset: {
			x: opts.font.shadowOffset.x,
			y: opts.font.shadowOffset.y
		},
		textAlign: Ti.UI.TEXT_ALIGNMENT_CENTER,
		text: (opts.percent * 100) + '%'
	});
	
	mainHolder.add(holder);
	topper.add(percentText);	
	holder.add(layer1);
	holder.add(layer2);
	holder.add(layer3);
	holder.add(layer4);
	holder.add(topper);
	
	var percent = opts.percent;
	var angle = 360 * percent;
	layer2.visible = (angle > 180) ? false : true;
	layer4.visible = (angle > 180) ? true : false;
	layer3.transform = Ti.UI.create2DMatrix().rotate(angle);
	return mainHolder;	
}

/* Circular Progress Bar Options
 
 percent: A value between 0 and 1
 size: The size of the circular progress bar
 margin: The margin of the circular progress bar
 backgroundColor: The backgroundColor of the circular area
 progressColor: The backgroundColor of the progress bar
 --
 topper.color: The center circle color
 topper.size: The size of the center circle
 ---
 font.visible: Boolean to display the font or not
 font.color: The font color
 font.size: The fontSize
 font.shadowColor: The font shadow color
 font.shadowRadius: The font shadow radius
 font.shadowOffset.x: The x value of the shadow shadowOffset
 font.shadowOffset.y: The y value of the shadow shadowOffset
 
 */
var circleProgress = circularProgressBar({
	percent:0.35,
	size:46,
	margin:4,
	backgroundColor:'#fff',
	progressColor:'#4ba818',
	topper: {
		color:'#fff',
		size: 36
	},
	font: {
		visible: true,
		color: '#900',
		size: 12,
		shadowColor: '#aaa',
		shadowRadius: 1,
		shadowOffset: {
			x: 0,
			y: 1
		}
	}
});
win.add(circleProgress);