Renaming: distinguish ancestor, container and paintInvalidationContainer

third_party/WebKit/Source/core/layout/LayoutView.cpp

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. 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,
@@ skipping 296 matching lines @@
     // Ditto when not in compositing mode.
     if (!usesCompositing())
         return LayoutBlockFlow::visualOverflowRect();
 
     // In normal compositing mode, LayoutView doesn't actually apply clipping
     // on its descendants. Instead their visual overflow is propagated to
     // compositor()->m_rootContentLayer for accelerated scrolling.
     return LayoutRect(documentRect());
 }
 
-void LayoutView::mapLocalToContainer(const LayoutBoxModelObject* paintInvalidationContainer, TransformState& transformState, MapCoordinatesFlags mode, bool* wasFixed, const PaintInvalidationState* paintInvalidationState) const
+void LayoutView::mapLocalToAncestor(const LayoutBoxModelObject* ancestor, TransformState& transformState, MapCoordinatesFlags mode, bool* wasFixed, const PaintInvalidationState* paintInvalidationState) const
 {
     ASSERT_UNUSED(wasFixed, !wasFixed || *wasFixed == static_cast<bool>(mode & IsFixed));
 
-    if (!paintInvalidationContainer && mode & UseTransforms && shouldUseTransformFromContainer(0)) {
+    if (!ancestor && mode & UseTransforms && shouldUseTransformFromContainer(0)) {
         TransformationMatrix t;
         getTransformFromContainer(0, LayoutSize(), t);
         transformState.applyTransform(t);
     }
 
     if ((mode & IsFixed) && m_frameView) {
         transformState.move(toIntSize(m_frameView->scrollPosition()));
         if (hasOverflowClip())
             transformState.move(scrolledContentOffset());
         // IsFixed flag is only applicable within this LayoutView.
         mode &= ~IsFixed;
     }
 
-    if (paintInvalidationContainer == this)
+    if (ancestor == this)
         return;
 
     if (mode & TraverseDocumentBoundaries) {
         if (LayoutPart* parentDocLayoutObject = frame()->ownerLayoutObject()) {
             transformState.move(-frame()->view()->scrollOffset());
             transformState.move(parentDocLayoutObject->contentBoxOffset());
 
-            parentDocLayoutObject->mapLocalToContainer(paintInvalidationContainer, transformState, mode, wasFixed, paintInvalidationState);
+            parentDocLayoutObject->mapLocalToAncestor(ancestor, transformState, mode, wasFixed, paintInvalidationState);
         }
     }
 }
 
 const LayoutObject* LayoutView::pushMappingToContainer(const LayoutBoxModelObject* ancestorToStopAt, LayoutGeometryMap& geometryMap) const
 {
     LayoutSize offsetForFixedPosition;
     LayoutSize offset;
     LayoutObject* container = nullptr;
 
@@ skipping 97 matching lines @@
 {
     setShouldDoFullPaintInvalidation();
 
     // The only way we know how to hit these ASSERTS below this point is via the Chromium OS login screen.
     DisableCompositingQueryAsserts disabler;
 
     if (compositor()->inCompositingMode())
         compositor()->fullyInvalidatePaint();
 }
 
-void LayoutView::mapToVisibleRectInContainerSpace(const LayoutBoxModelObject* paintInvalidationContainer, LayoutRect& rect, const PaintInvalidationState* invalidationState) const
+void LayoutView::mapToVisibleRectInAncestorSpace(const LayoutBoxModelObject* ancestor, LayoutRect& rect, const PaintInvalidationState* invalidationState) const
 {
-    mapToVisibleRectInContainerSpace(paintInvalidationContainer, rect, IsNotFixedPosition, invalidationState);
+    mapToVisibleRectInAncestorSpace(ancestor, rect, IsNotFixedPosition, invalidationState);
 }
 
-void LayoutView::mapToVisibleRectInContainerSpace(const LayoutBoxModelObject* paintInvalidationContainer, LayoutRect& rect, ViewportConstrainedPosition viewportConstraint, const PaintInvalidationState* state) const
+void LayoutView::mapToVisibleRectInAncestorSpace(const LayoutBoxModelObject* ancestor, LayoutRect& rect, ViewportConstrainedPosition viewportConstraint, const PaintInvalidationState* state) const
 {
     if (document().printing())
         return;
 
     if (style()->isFlippedBlocksWritingMode()) {
         // We have to flip by hand since the view's logical height has not been determined.  We
         // can use the viewport width and height.
         if (style()->isHorizontalWritingMode())
             rect.setY(viewHeight() - rect.maxY());
         else
             rect.setX(viewWidth() - rect.maxX());
     }
 
     adjustViewportConstrainedOffset(rect, viewportConstraint);
 
     // Apply our transform if we have one (because of full page zooming).
-    if (!paintInvalidationContainer && layer() && layer()->transform())
+    if (!ancestor && layer() && layer()->transform())
         rect = layer()->transform()->mapRect(rect);
 
-    ASSERT(paintInvalidationContainer);
-    if (paintInvalidationContainer == this)
+    ASSERT(ancestor);
+    if (ancestor == this)
         return;
 
     Element* owner = document().ownerElement();
     if (!owner)
         return;
 
     if (LayoutBox* obj = owner->layoutBox()) {
         if (!state || !state->viewClippingAndScrollOffsetDisabled()) {
             // Intersect the viewport with the paint invalidation rect.
             LayoutRect viewRectangle = viewRect();
             rect.intersect(viewRectangle);
 
             // Adjust for scroll offset of the view.
             rect.moveBy(-viewRectangle.location());
         }
 
         // Adjust for frame border.
         rect.move(obj->contentBoxOffset());
-        obj->mapToVisibleRectInContainerSpace(paintInvalidationContainer, rect, 0);
+        obj->mapToVisibleRectInAncestorSpace(ancestor, rect, 0);
     }
 }
 
 void LayoutView::adjustViewportConstrainedOffset(LayoutRect& rect, ViewportConstrainedPosition viewportConstraint) const
 {
     if (viewportConstraint != IsFixedPosition)
         return;
 
     if (m_frameView) {
         rect.move(toIntSize(m_frameView->scrollPosition()));
@@ skipping 481 matching lines @@
 }
 
 void LayoutView::sendMediaPositionChangeNotifications(const IntRect& visibleRect)
 {
     for (auto& media : m_mediaForPositionNotification) {
         media->notifyPositionMayHaveChanged(visibleRect);
     }
 }
 
 } // namespace blink