instapaper-framer.coffee

readData = () ->
	rawJson = Utils.domLoadDataSync "data.json"
	return JSON.parse rawJson

# recursively clone an object
clone = (obj) ->
	return obj  if obj is null or typeof (obj) isnt "object"
	temp = new obj.constructor()
	for key of obj
		temp[key] = clone(obj[key])
	return temp	

createColor = (hexStr, opacity) ->
	# returns an rgba string with opacity parameter
	# e.g. createColor("#333333", 0.5) => "rgba(221, 221, 221, 1)"
	try
		opacity = parseFloat(opacity, 10)
	catch error
		opacity = 1.0
	finally
		if opacity is null or isNaN(opacity) or opacity > 1 or opacity < 0
			opacity = 1.0
	color = new Color(hexStr)
	rgbStr = color.toRgbString()
	[r, g, b] = rgbStr.replace(/^(rgb|rgba)\(/,'').replace(/\)$/,'').replace(/\s/g,'').split(',')
	return "rgba(#{r}, #{g}, #{b}, #{opacity})"

class CardHolder extends Layer
	constructor: (parent, options={}) ->
		options.width = parent.width
		options.height = parent.height
		options.x = parent.x
		options.y = parent.y
		@cards = []
		@maxCards = options.maxCards
		super options
	
	appendCard: (card) ->
		card.height = @height / @maxCards
		card.y = @cards.length * card.height
		@cards.push(card)
		return card

class Card extends Layer
	constructor: (cardHolder, options={}) ->
		options.width = cardHolder.width
		options.parent = cardHolder
		super options

cardHolderOpts = {
	backgroundColor: "transparent"
	maxCards: 4
}

cardOpts = {
	backgroundColor: "red"
	borderWidth:
		bottom: 0.75
	textOverflow: "ellipsis"
}

cardHolder = new CardHolder(mainContent, cardHolderOpts)
colours = ["#b8f1de", "#f0cef9", "#fa9494", "#3467d6"]

for tup in _.zip([0..cardHolder.maxCards-1], colours)
	idx = tup[0]
	colour = tup[1]
	opts = clone(cardOpts)
	opts.backgroundColor = colour 
	card = new Card(cardHolder, opts)
	cardHolder.appendCard(card)