Drive SVG Animations via requestAnimationFrame

Source/core/svg/graphics/SVGImage.cpp

 /*
  * Copyright (C) 2006 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) Research In Motion Limited 2011. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
@@ skipping 24 matching lines @@
 #include "core/frame/LocalFrame.h"
 #include "core/frame/Settings.h"
 #include "core/loader/FrameLoadRequest.h"
 #include "core/page/Chrome.h"
 #include "core/rendering/style/RenderStyle.h"
 #include "core/rendering/svg/RenderSVGRoot.h"
 #include "core/svg/SVGDocument.h"
 #include "core/svg/SVGFEImageElement.h"
 #include "core/svg/SVGImageElement.h"
 #include "core/svg/SVGSVGElement.h"
+#include "core/svg/animation/SMILTimeContainer.h"
 #include "core/svg/graphics/SVGImageChromeClient.h"
 #include "platform/LengthFunctions.h"
 #include "platform/geometry/IntRect.h"
 #include "platform/graphics/GraphicsContextStateSaver.h"
 #include "platform/graphics/ImageBuffer.h"
 #include "platform/graphics/ImageObserver.h"
 #include "wtf/PassRefPtr.h"
 
 namespace WebCore {
 
@@ skipping 309 matching lines @@
     if (!rootElement)
         return;
     rootElement->pauseAnimations();
 }
 
 void SVGImage::resetAnimation()
 {
     stopAnimation();
 }
 
+bool SVGImage::hasAnimations() const
+{
+    if (!m_page)
+        return false;
+    LocalFrame* frame = m_page->mainFrame();
+    SVGSVGElement* rootElement = toSVGDocument(frame->document())->rootElement();
+    if (!rootElement)
+        return false;
+    return rootElement->timeContainer()->hasAnimations();
+}
+
 bool SVGImage::dataChanged(bool allDataReceived)
 {
     TRACE_EVENT0("webkit", "SVGImage::dataChanged");
 
     // Don't do anything if is an empty image.
     if (!data()->size())
         return true;
 
     if (allDataReceived) {
         static FrameLoaderClient* dummyFrameLoaderClient = new EmptyFrameLoaderClient;
 
         Page::PageClients pageClients;
         fillWithEmptyClients(pageClients);
         m_chromeClient = adoptPtr(new SVGImageChromeClient(this));
         pageClients.chromeClient = m_chromeClient.get();
 
         // FIXME: If this SVG ends up loading itself, we might leak the world.
         // The Cache code does not know about ImageResources holding Frames and
         // won't know to break the cycle.
         // This will become an issue when SVGImage will be able to load other
         // SVGImage objects, but we're safe now, because SVGImage can only be
         // loaded by a top-level document.
-        m_page = adoptPtr(new Page(pageClients));
-        m_page->settings().setScriptEnabled(false);
-        m_page->settings().setPluginsEnabled(false);
-        m_page->settings().setAcceleratedCompositingEnabled(false);
+        OwnPtr<Page> page = adoptPtr(new Page(pageClients));
+        page->settings().setScriptEnabled(false);
+        page->settings().setPluginsEnabled(false);
+        page->settings().setAcceleratedCompositingEnabled(false);
 
-        RefPtr<LocalFrame> frame = LocalFrame::create(FrameInit::create(&m_page->frameHost(), dummyFrameLoaderClient));
+        RefPtr<LocalFrame> frame = LocalFrame::create(FrameInit::create(&page->frameHost(), dummyFrameLoaderClient));
         frame->setView(FrameView::create(frame.get()));
         frame->init();
         FrameLoader& loader = frame->loader();
         loader.forceSandboxFlags(SandboxAll);
 
         frame->view()->setScrollbarsSuppressed(true);
         frame->view()->setCanHaveScrollbars(false); // SVG Images will always synthesize a viewBox, if it's not available, and thus never see scrollbars.
         frame->view()->setTransparent(true); // SVG Images are transparent.
 
+        m_page = page.release();
+
         loader.load(FrameLoadRequest(0, blankURL(), SubstituteData(data(), "image/svg+xml", "UTF-8", KURL(), ForceSynchronousLoad)));
         // Set the intrinsic size before a container size is available.
         m_intrinsicSize = containerSize();
     }
 
     return m_page;
 }
 
 String SVGImage::filenameExtension() const
 {
     return "svg";
 }
 
 }