First iteration on custom layout.

sky/engine/core/dom/Element.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Peter Kelly (pmk@post.com)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  *           (C) 2007 David Smith (catfish.man@gmail.com)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012, 2013 Apple Inc. All rights reserved.
  *           (C) 2007 Eric Seidel (eric@webkit.org)
  *
  * This library is free software; you can redistribute it and/or
@@ skipping 55 matching lines @@
 #include "sky/engine/core/events/EventDispatcher.h"
 #include "sky/engine/core/events/FocusEvent.h"
 #include "sky/engine/core/frame/FrameView.h"
 #include "sky/engine/core/frame/LocalFrame.h"
 #include "sky/engine/core/frame/Settings.h"
 #include "sky/engine/core/html/HTMLCanvasElement.h"
 #include "sky/engine/core/html/HTMLElement.h"
 #include "sky/engine/core/html/HTMLTemplateElement.h"
 #include "sky/engine/core/html/parser/HTMLDocumentParser.h"
 #include "sky/engine/core/html/parser/HTMLParserIdioms.h"
+#include "sky/engine/core/layout/LayoutCallback.h"
 #include "sky/engine/core/page/ChromeClient.h"
 #include "sky/engine/core/page/FocusController.h"
 #include "sky/engine/core/page/Page.h"
 #include "sky/engine/core/painting/PaintingCallback.h"
 #include "sky/engine/core/painting/PaintingTasks.h"
+#include "sky/engine/core/rendering/RenderCustomLayout.h"
 #include "sky/engine/core/rendering/RenderLayer.h"
 #include "sky/engine/core/rendering/RenderView.h"
 #include "sky/engine/platform/EventDispatchForbiddenScope.h"
 #include "sky/engine/tonic/dart_state.h"
 #include "sky/engine/wtf/BitVector.h"
 #include "sky/engine/wtf/HashFunctions.h"
 #include "sky/engine/wtf/text/CString.h"
 #include "sky/engine/wtf/text/StringBuilder.h"
 #include "sky/engine/wtf/text/TextPosition.h"
 
@@ skipping 534 matching lines @@
     return m_tagName.localName();
 }
 
 const AtomicString Element::imageSourceURL() const
 {
     return getAttribute(HTMLNames::srcAttr);
 }
 
 RenderObject* Element::createRenderer(RenderStyle* style)
 {
+    if (m_layoutManager)
+        return new RenderCustomLayout(this);
     return RenderObject::createObject(this, style);
 }
 
 void Element::insertedInto(ContainerNode* insertionPoint)
 {
     // need to do superclass processing first so inDocument() is true
     // by the time we reach updateId
     ContainerNode::insertedInto(insertionPoint);
 
     if (!insertionPoint->isInTreeScope())
@@ skipping 239 matching lines @@
 }
 
 ShadowRoot* Element::shadowRoot() const
 {
     ElementShadow* elementShadow = shadow();
     if (!elementShadow)
         return 0;
     return elementShadow->shadowRoot();
 }
 
+double Element::x() const
+{
+    if (RenderBox* box = renderBox())
+        return box->x();
+    return 0;
+}
+
+void Element::setX(double x)
+{
+    if (RenderBox* box = renderBox())
+        return box->setX(x);
+}
+
+double Element::y() const
+{
+    if (RenderBox* box = renderBox())
+        return box->y();
+    return 0;
+}
+
+void Element::setY(double y)
+{
+    if (RenderBox* box = renderBox())
+        return box->setY(y);
+}
+
+double Element::width() const
+{
+    if (RenderBox* box = renderBox())
+        return box->width();
+    return 0;
+}
+
+void Element::setWidth(double width)
+{
+    if (RenderBox* box = renderBox())
+        return box->setWidth(width);
+}
+
+double Element::height() const
+{
+    if (RenderBox* box = renderBox())
+        return box->height();
+    return 0;
+}
+
+void Element::setHeight(double height)
+{
+    if (RenderBox* box = renderBox())
+        return box->setHeight(height);
+}
+
+LayoutCallback* Element::layoutManager() const
+{
+    return m_layoutManager.get();
+}
+
+void Element::setLayoutManager(PassOwnPtr<LayoutCallback> callback)
+{
+    m_layoutManager = callback;

[abarth-chromium, 2015/03/25 00:18:51]

Do we need to dirty ourselves somehow so that Element::createRenderer will pick
up the change to this state?

[ojan, 2015/04/02 00:02:29]

Yes! Will fix in followup patch. There's a number of relayout bugs here.

+}
+
 void Element::childrenChanged(const ChildrenChange& change)
 {
     ContainerNode::childrenChanged(change);
 
     if (ElementShadow* shadow = this->shadow())
         shadow->setNeedsDistributionRecalc();
 }
 
 #ifndef NDEBUG
 void Element::formatForDebugger(char* buffer, unsigned length) const
@@ skipping 661 matching lines @@
         return false;
     if (treeScope().scopedStyleResolver().hasSelectorForId(idValue))
         return true;
     // Host rules could also have effects.
     if (ShadowRoot* shadowRoot = this->shadowRoot())
         return shadowRoot->scopedStyleResolver().hasSelectorForId(idValue);
     return false;
 }
 
 } // namespace blink