From bbe2a2f2d3b5260544a488234c1866e12453d7c2 Mon Sep 17 00:00:00 2001
From: Marshall Greenblatt <magreenblatt@gmail.com>
Date: Thu, 15 Dec 2011 16:06:02 +0000
Subject: [PATCH] Improve CPU usage by ignoring ScheduleAnimation() and
 ScheduleComposite() calls when not using accelerated compositing (issue
 #456).

git-svn-id: https://chromiumembedded.googlecode.com/svn/trunk@420 5089003a-bbd8-11dd-ad1f-f1f9622dbc98
---
 libcef/webwidget_host.cc     | 3 +++
 libcef/webwidget_host_gtk.cc | 3 +++
 libcef/webwidget_host_mac.mm | 3 +++
 libcef/webwidget_host_win.cc | 3 ++-
 4 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/libcef/webwidget_host.cc b/libcef/webwidget_host.cc
index 490c4b3c2..34628d390 100644
--- a/libcef/webwidget_host.cc
+++ b/libcef/webwidget_host.cc
@@ -15,6 +15,9 @@ using WebKit::WebSize;
 
 
 void WebWidgetHost::ScheduleAnimation() {
+  if (!webwidget_ || !webwidget_->isAcceleratedCompositingActive())
+    return;
+
   MessageLoop::current()->PostDelayedTask(FROM_HERE,
       base::Bind(&WebWidgetHost::ScheduleComposite, weak_factory_.GetWeakPtr()),
       10);
diff --git a/libcef/webwidget_host_gtk.cc b/libcef/webwidget_host_gtk.cc
index 97a2d845f..b6bde4bc9 100644
--- a/libcef/webwidget_host_gtk.cc
+++ b/libcef/webwidget_host_gtk.cc
@@ -303,6 +303,9 @@ void WebWidgetHost::DidScrollRect(int dx, int dy, const gfx::Rect& clip_rect) {
 }
 
 void WebWidgetHost::ScheduleComposite() {
+  if (!webwidget_ || !webwidget_->isAcceleratedCompositingActive())
+    return;
+
   int width = logical_size_.width();
   int height = logical_size_.height();
   GdkRectangle grect = {
diff --git a/libcef/webwidget_host_mac.mm b/libcef/webwidget_host_mac.mm
index 64133d93f..3b51ad9e5 100644
--- a/libcef/webwidget_host_mac.mm
+++ b/libcef/webwidget_host_mac.mm
@@ -228,6 +228,9 @@ void WebWidgetHost::Paint(SkRegion& update_rgn) {
 }
 
 void WebWidgetHost::ScheduleComposite() {
+  if (!webwidget_ || !webwidget_->isAcceleratedCompositingActive())
+    return;
+
   [view_ setNeedsDisplay:YES];
 }
 
diff --git a/libcef/webwidget_host_win.cc b/libcef/webwidget_host_win.cc
index 6a841e3aa..2e764ee13 100644
--- a/libcef/webwidget_host_win.cc
+++ b/libcef/webwidget_host_win.cc
@@ -309,8 +309,9 @@ void WebWidgetHost::DidScrollRect(int dx, int dy, const gfx::Rect& clip_rect) {
 }
 
 void WebWidgetHost::ScheduleComposite() {
-  if (!webwidget_)
+  if (!webwidget_ || !webwidget_->isAcceleratedCompositingActive())
     return;
+
   WebSize size = webwidget_->size();
   InvalidateRect(gfx::Rect(0, 0, size.width, size.height));
 }