Animations: Introduce compositor AnimationPlayer and AnimationTimeline.

Source/web/ChromeClientImpl.cpp

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 16 matching lines @@
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "web/ChromeClientImpl.h"
 
 #include "bindings/core/v8/ScriptController.h"
 #include "core/HTMLNames.h"
+#include "core/animation/AnimationTimeline.h"
 #include "core/dom/AXObjectCache.h"
 #include "core/dom/Document.h"
 #include "core/dom/Fullscreen.h"
 #include "core/dom/Node.h"
 #include "core/frame/Console.h"
 #include "core/frame/FrameHost.h"
 #include "core/frame/FrameView.h"
 #include "core/frame/Settings.h"
 #include "core/html/HTMLInputElement.h"
 #include "core/html/forms/ColorChooser.h"
@@ skipping 53 matching lines @@
 #include "web/WebPopupMenuImpl.h"
 #include "web/WebSettingsImpl.h"
 #include "web/WebViewImpl.h"
 #include "wtf/text/CString.h"
 #include "wtf/text/StringBuilder.h"
 #include "wtf/text/StringConcatenate.h"
 #include "wtf/unicode/CharacterNames.h"
 
 namespace blink {
 
+class WebCompositorAnimationTimeline;
+
 // Converts a AXObjectCache::AXNotification to a WebAXEvent
 static WebAXEvent toWebAXEvent(AXObjectCache::AXNotification notification)
 {
     // These enums have the same values; enforced in AssertMatchingEnums.cpp.
     return static_cast<WebAXEvent>(notification);
 }
 
 static WebSelectionBound toWebSelectionBound(const CompositedSelectionBound& bound)
 {
     ASSERT(bound.layer);
@@ skipping 564 matching lines @@
     return false;
 }
 
 GraphicsLayerFactory* ChromeClientImpl::graphicsLayerFactory() const
 {
     return m_webView->graphicsLayerFactory();
 }
 
 void ChromeClientImpl::attachRootGraphicsLayer(GraphicsLayer* rootLayer, LocalFrame* localRoot)
 {
+    WebCompositorAnimationTimeline* compositorTimeline = rootLayer && localRoot->document() ? localRoot->document()->timeline().compositorTimeline() : nullptr;

[dstockwell, 2015/03/27 00:30:58]

Hmm, what's going on here exactly? Why is this timeline special?

[loyso (OOO), 2015/03/27 00:53:39]

We had a conversation with aelias@ there:
https://codereview.chromium.org/946323002/patch/80001/90009
Basically, we have just one document timeline for blink document. In cc that
timeline counterpart is attached to LayerTreeHost, the same way as root layer is
attached.

There is a plan to plumb separate
attachCompositorTimeline/detachCompositorTimeline once we have a collection of
timelines in blink.

[dstockwell, 2015/03/27 01:01:19]

Is attachRootGraphicsLayer called for every frame?

[loyso (OOO), 2015/03/27 01:11:10]

No, it's not. It strictly matches Document attach/detach scope
(attachRootGraphicsLayer non-null/attachRootGraphicsLayer nullptr).

+
     // FIXME: For top-level frames we still use the WebView as a WebWidget. This special
     // case will be removed when top-level frames get WebFrameWidgets.
     if (localRoot->isMainFrame()) {
+        m_webView->setCompositorAnimationTimeline(compositorTimeline);
         m_webView->setRootGraphicsLayer(rootLayer);
     } else {
         WebLocalFrameImpl* webFrame = WebLocalFrameImpl::fromFrame(localRoot);
         // FIXME: The following conditional is only needed for staging until the Chromium patch
         // lands that instantiates a WebFrameWidget.
         if (!webFrame->frameWidget()) {
+            m_webView->setCompositorAnimationTimeline(compositorTimeline);
             m_webView->setRootGraphicsLayer(rootLayer);
             return;
         }
         ASSERT(webFrame && webFrame->frameWidget());
+        webFrame->frameWidget()->setCompositorAnimationTimeline(compositorTimeline);
         webFrame->frameWidget()->setRootGraphicsLayer(rootLayer);
     }
 }
 
 void ChromeClientImpl::enterFullScreenForElement(Element* element)
 {
     m_webView->enterFullScreenForElement(element);
 }
 
 void ChromeClientImpl::exitFullScreenForElement(Element* element)
@@ skipping 167 matching lines @@
     if (m_webView->rootGraphicsLayer() && m_webView->layerTreeView() && m_webView->pinchVirtualViewportEnabled())
         m_webView->page()->frameHost().pinchViewport().registerLayersWithTreeView(m_webView->layerTreeView());
 }
 
 void ChromeClientImpl::didUpdateTopControls() const
 {
     m_webView->didUpdateTopControls();
 }
 
 } // namespace blink