From e31464b47d19f78f26694b2aa908238dfedfcd79 Mon Sep 17 00:00:00 2001
From: Alasdair Smith <ali@alasdairsmith.co.uk>
Date: Mon, 25 Sep 2017 15:46:29 +0100
Subject: [PATCH 1/2] Keep track of pdf layout hidden state

---
 services/web/public/coffee/ide.coffee | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/services/web/public/coffee/ide.coffee b/services/web/public/coffee/ide.coffee
index d37334649c..e317b355ef 100644
--- a/services/web/public/coffee/ide.coffee
+++ b/services/web/public/coffee/ide.coffee
@@ -71,11 +71,12 @@ define [
 			view: "editor"
 			chatOpen: false
 			pdfLayout: 'sideBySide'
+			pdfHidden: false,
 			reviewPanelOpen: localStorage("ui.reviewPanelOpen.#{window.project_id}")
 			miniReviewPanelVisible: false
 		}
 		$scope.user = window.user
-		
+
 		$scope.$watch "project.features.trackChangesVisible", (visible) ->
 			return if !visible?
 			$scope.ui.showCollabFeaturesOnboarding = window.showTrackChangesOnboarding and visible
@@ -99,6 +100,9 @@ define [
 			if value?
 				localStorage "ui.reviewPanelOpen.#{window.project_id}", value
 
+		$scope.$on "layout:pdf:resize", (_, layoutState) ->
+			$scope.ui.pdfHidden = layoutState.east.initClosed
+
 		# Tracking code.
 		$scope.$watch "ui.view", (newView, oldView) ->
 			if newView? and newView != "editor" and newView != "pdf"

From 5b3c9f4033cbde25a708a30e59578c1e41bf050f Mon Sep 17 00:00:00 2001
From: Alasdair Smith <ali@alasdairsmith.co.uk>
Date: Mon, 25 Sep 2017 15:46:43 +0100
Subject: [PATCH 2/2] Prevent autocompile if pdf preview is hidden

---
 .../web/public/coffee/ide/pdf/controllers/PdfController.coffee  | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/services/web/public/coffee/ide/pdf/controllers/PdfController.coffee b/services/web/public/coffee/ide/pdf/controllers/PdfController.coffee
index ce3c8cbce1..93166d4388 100644
--- a/services/web/public/coffee/ide/pdf/controllers/PdfController.coffee
+++ b/services/web/public/coffee/ide/pdf/controllers/PdfController.coffee
@@ -77,7 +77,7 @@ define [
 
 		autoCompileTimeout = null
 		triggerAutoCompile = () ->
-			return if autoCompileTimeout
+			return if autoCompileTimeout or $scope.ui.pdfHidden
 
 			timeSinceLastCompile = Date.now() - $scope.recompiledAt
 			# If time is non-monotonic, assume that the user's system clock has been