(WIP) Invalidation during painting (for synchronized painting)

third_party/WebKit/Source/core/paint/SVGPaintContext.cpp

 /*
  * Copyright (C) 2007, 2008 Rob Buis <buis@kde.org>
  * Copyright (C) 2007 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2007 Eric Seidel <eric@webkit.org>
  * Copyright (C) 2009 Google, Inc.  All rights reserved.
  * Copyright (C) 2009 Dirk Schulze <krit@webkit.org>
  * Copyright (C) Research In Motion Limited 2009-2010. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  * Library General Public License for more details.
  *
  * You should have received a copy of the GNU Library General Public License
  * along with this library; see the file COPYING.LIB.  If not, write to
  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  * Boston, MA 02110-1301, USA.
  */
 
 #include "core/paint/SVGPaintContext.h"
 
 #include "core/frame/FrameHost.h"
 #include "core/layout/svg/LayoutSVGResourceFilter.h"
 #include "core/layout/svg/LayoutSVGResourceMasker.h"
+#include "core/layout/svg/LayoutSVGRoot.h"
 #include "core/layout/svg/SVGLayoutSupport.h"
 #include "core/layout/svg/SVGResources.h"
 #include "core/layout/svg/SVGResourcesCache.h"
 #include "core/paint/SVGMaskPainter.h"
 #include "platform/FloatConversion.h"
 
 namespace blink {
 
 SVGPaintContext::~SVGPaintContext()
 {
@@ skipping 181 matching lines @@
     // with the spec for color-interpolation. For now, just steal it from the GC
     // though.
     // Additionally, it's not really safe/guaranteed to be correct, as
     // something down the paint pipe may want to farther tweak the color
     // filter, which could yield incorrect results. (Consider just using
     // saveLayer() w/ this color filter explicitly instead.)
     paint.setColorFilter(paintInfo.context.colorFilter());
     return true;
 }
 
+void SVGPaintContext::initializePaintInvalidationState()
+{
+    ASSERT(RuntimeEnabledFeatures::slimmingPaintSynchronizedPaintingEnabled());
+
+    if (!m_originalPaintInfo->paintInvalidationState)
+        return;
+
+    if (m_object->isSVGRoot())
+        m_paintInvalidationState.emplace(*m_originalPaintInfo->paintInvalidationState, toLayoutBoxModelObject(*m_object), m_paintInfo.paintInvalidationState->paintInvalidationContainer());
+    else if (m_object->isSVGModelObject())
+        m_paintInvalidationState.emplace(*m_originalPaintInfo->paintInvalidationState, toLayoutSVGModelObject(*m_object));
+
+    if (m_paintInvalidationState)
+        m_paintInfo.paintInvalidationState = &*m_paintInvalidationState;
+}
+
 } // namespace blink