flash the pdf controls in pdfng

services/web/public/coffee/ide/pdfng/directives/pdfJs.coffee

@@ -71,6 +71,9 @@ define [
 				scope.$on 'pdfDoubleClick', (event, e) ->
 					scope.dblClickCallback?(page: e.page - 1, offset: { top: e.y, left: e.x })
 
+				scope.$on 'flash-controls', () ->
+					flashControls()
+
 				scope.$watch "pdfSrc", (url) ->
 					if url
 						scope.loading = true

services/web/public/coffee/ide/pdfng/directives/pdfViewer.coffee

@@ -262,6 +262,7 @@ define [
 						element.innerHeight(),
 						element.innerWidth()
 					]
+					scope.$emit 'flash-controls'
 					#scope.$apply()
 
 				scope.$on 'layout:main:resize', () ->