From 95eb66856e9ea65ecf412f86a0e8334d9980d51d Mon Sep 17 00:00:00 2001 From: Adam Barth Date: Wed, 18 Nov 2015 16:13:56 -0800 Subject: [PATCH] Reduce paint time for Stocks drawer animation by 88% Now we use a forced layer around the reprojected content of the drawer, which means we don't have to re-record it during the slide animation. This saves 2ms per frame. The total main-thread time for the drawer animation is now 2.0ms. --- packages/flutter/lib/src/material/drawer.dart | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/packages/flutter/lib/src/material/drawer.dart b/packages/flutter/lib/src/material/drawer.dart index 5ed424f35dc..4d2e7026521 100644 --- a/packages/flutter/lib/src/material/drawer.dart +++ b/packages/flutter/lib/src/material/drawer.dart @@ -202,7 +202,9 @@ class _DrawerControllerState extends State<_DrawerController> { widthFactor: _performance.progress, child: new SizeObserver( onSizeChanged: _handleSizeChanged, - child: config.child + child: new ForcedLayer( + child: config.child + ) ) ) )