Better util function for finding out local urls

framer/Layer.coffee

@@ -53,7 +53,7 @@ class exports.Layer extends BaseClass
 		# Special power setting for 2d rendering path. Only enable this
 		# if you know what you are doing. See LayerStyle for more info.
 		@_prefer2d = false
-		@_cacheImage = false
+		@_cacheImage = true
 
 		# We have to create the element before we set the defaults
 		@_createElement()
@@ -555,11 +555,7 @@ class exports.Layer extends BaseClass
 				shoudUseImageCache = false
 
 			# If this is a file url, we don't use any cache
-			else if Utils.isLocalUrl(imageUrl)
-				shoudUseImageCache = false
-
-			# If this is a locally served prototype over http (like in studio) we skip the cache
-			else if imageUrl.indexOf("127.0.0.1") != -1 or imageUrl.indexOf("localhost") != -1
+			else if Utils.isLocalAssetUrl(imageUrl)
 				shoudUseImageCache = false
 
 			if shoudUseImageCache is false

framer/Utils.coffee

@@ -296,11 +296,27 @@ Utils.isTablet = ->
 Utils.isMobile = ->
 	Utils.isPhone() or Utils.isTablet()
 
-Utils.isLocal = ->
-	Utils.isLocalUrl window.location.href
+Utils.isFileUrl = (url) ->
+	return _.startsWith(url, "file://")
+
+Utils.isRelativeUrl = (url) ->
+	return true if _.startsWith(url, ".")
+	return true if _.startsWith(url, "./")
+	return true if _.startsWith(url, "../")
+	return false
+
+Utils.isLocalServerUrl = (url) ->
+	return url.indexOf("127.0.0.1") != -1 or url.indexOf("localhost")  != -1
 
 Utils.isLocalUrl = (url) ->
-	url[0..6] == "file://"
+	return true if Utils.isFileUrl(url)
+	return true if Utils.isLocalServerUrl(url)
+	return false
+
+Utils.isLocalAssetUrl = (url) ->
+	return true if Utils.isLocalUrl(url)
+	return true if Utils.isRelativeUrl(url) and Utils.isLocalUrl(window.location.href)
+	return false
 
 Utils.isFramerStudio = ->
 	navigator.userAgent.indexOf("FramerStudio") != -1