Navigation transitions: Added createStyledMarkupForNavigationTransition

Source/core/editing/EditingStyle.cpp

Index: Source/core/editing/EditingStyle.cpp
diff --git a/Source/core/editing/EditingStyle.cpp b/Source/core/editing/EditingStyle.cpp
index c0fdd1fb75bf2c76455952fe50cd93c9095a3841..5719e79c6a2432e880d527457db298f24dffc40a 100644
--- a/Source/core/editing/EditingStyle.cpp
+++ b/Source/core/editing/EditingStyle.cpp
@@ -34,6 +34,7 @@
 #include "core/css/CSSRuleList.h"
 #include "core/css/CSSStyleRule.h"
 #include "core/css/CSSValueList.h"
+#include "core/css/CSSValuePool.h"
 #include "core/css/FontSize.h"
 #include "core/css/RuntimeCSSEnabled.h"
 #include "core/css/StylePropertySet.h"
@@ -51,6 +52,8 @@
 #include "core/editing/htmlediting.h"
 #include "core/frame/LocalFrame.h"
 #include "core/html/HTMLFontElement.h"
+#include "core/rendering/RenderBox.h"
+#include "core/rendering/RenderObject.h"
 #include "core/rendering/style/RenderStyle.h"
 
 namespace WebCore {
@@ -1232,6 +1235,31 @@ void EditingStyle::removePropertiesInElementDefaultStyle(Element* element)
     removePropertiesInStyle(m_mutableStyle.get(), defaultStyle.get());
 }
 
+void EditingStyle::addAbsolutePositioningFromElement(const Element& element)
+{
+    LayoutRect rect = element.boundingBox();
+    RenderObject* renderer = element.renderer();
+
+    LayoutUnit x = rect.x();
+    LayoutUnit y = rect.y();
+    LayoutUnit width = rect.width();
+    LayoutUnit height = rect.height();
+    if (renderer && renderer->isBox()) {
+        RenderBox* renderBox = toRenderBox(renderer);
+
+        x -= renderBox->marginLeft();
+        y -= renderBox->marginTop();
+
+        m_mutableStyle->setProperty(CSSPropertyBoxSizing, CSSValueBorderBox);

[esprehn, 2014/06/26 09:32:55]

The spec is going to have to be really clear about all the stuff you're doing
down here for implementations to be interoperable.

+    }
+
+    m_mutableStyle->setProperty(CSSPropertyPosition, CSSValueAbsolute);
+    m_mutableStyle->setProperty(CSSPropertyLeft, cssValuePool().createValue(x, CSSPrimitiveValue::CSS_PX));
+    m_mutableStyle->setProperty(CSSPropertyTop, cssValuePool().createValue(y, CSSPrimitiveValue::CSS_PX));
+    m_mutableStyle->setProperty(CSSPropertyWidth, cssValuePool().createValue(width, CSSPrimitiveValue::CSS_PX));
+    m_mutableStyle->setProperty(CSSPropertyHeight, cssValuePool().createValue(height, CSSPrimitiveValue::CSS_PX));
+}
+
 void EditingStyle::forceInline()
 {
     if (!m_mutableStyle)