[New Multicolumn] Make offsetLeft, offsetTop and getClientRects() behave.

Source/core/rendering/RenderFlowThread.cpp

 /*
  * Copyright (C) 2011 Adobe Systems Incorporated. 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 297 matching lines @@
     LayoutUnit pageLogicalBottom = pageLogicalTop + pageLogicalHeight;
     LayoutUnit remainingHeight = pageLogicalBottom - offset;
     if (pageBoundaryRule == IncludePageBoundary) {
         // If IncludePageBoundary is set, the line exactly on the top edge of a
         // region will act as being part of the previous region.
         remainingHeight = intMod(remainingHeight, pageLogicalHeight);
     }
     return remainingHeight;
 }
 
-RenderRegion* RenderFlowThread::mapFromFlowToRegion(TransformState& transformState) const
-{
-    if (!hasValidRegionInfo())
-        return 0;
-
-    LayoutRect boxRect = transformState.mappedQuad().enclosingBoundingBox();
-    flipForWritingMode(boxRect);
-
-    // FIXME: We need to refactor RenderObject::absoluteQuads to be able to split the quads across regions,
-    // for now we just take the center of the mapped enclosing box and map it to a region.
-    // Note: Using the center in order to avoid rounding errors.
-
-    LayoutPoint center = boxRect.center();
-    RenderRegion* renderRegion = regionAtBlockOffset(isHorizontalWritingMode() ? center.y() : center.x());
-    if (!renderRegion)
-        return 0;
-
-    LayoutRect flippedRegionRect(renderRegion->flowThreadPortionRect());
-    flipForWritingMode(flippedRegionRect);
-
-    transformState.move(renderRegion->contentBoxRect().location() - flippedRegionRect.location());
-
-    return renderRegion;
-}
-
 RenderRegion* RenderFlowThread::firstRegion() const
 {
     if (!hasValidRegionInfo())
         return 0;
     return m_regionList.first();
 }
 
 RenderRegion* RenderFlowThread::lastRegion() const
 {
     if (!hasValidRegionInfo())
@@ skipping 198 matching lines @@
 }
 
 void RenderFlowThread::RegionSearchAdapter::collectIfNeeded(const RegionInterval& interval)
 {
     if (m_result)
         return;
     if (interval.low() <= m_offset && interval.high() > m_offset)
         m_result = interval.data();
 }
 
-void RenderFlowThread::mapLocalToContainer(const RenderLayerModelObject* repaintContainer, TransformState& transformState, MapCoordinatesFlags mode, bool* wasFixed) const
-{
-    if (this == repaintContainer)
-        return;
-
-    if (RenderRegion* region = mapFromFlowToRegion(transformState)) {
-        // FIXME: The cast below is probably not the best solution, we may need to find a better way.
-        static_cast<const RenderObject*>(region)->mapLocalToContainer(region->containerForRepaint(), transformState, mode, wasFixed);
-    } else {
-        // This will happen for multicol when the flow thread is empty.
-        RenderBlockFlow::mapLocalToContainer(repaintContainer, transformState, mode, wasFixed);
-    }
-}
-
 CurrentRenderFlowThreadMaintainer::CurrentRenderFlowThreadMaintainer(RenderFlowThread* renderFlowThread)
     : m_renderFlowThread(renderFlowThread)
     , m_previousRenderFlowThread(0)
 {
     if (!m_renderFlowThread)
         return;
     RenderView* view = m_renderFlowThread->view();
     m_previousRenderFlowThread = view->flowThreadController()->currentRenderFlowThread();
     view->flowThreadController()->setCurrentRenderFlowThread(m_renderFlowThread);
 }
 
 CurrentRenderFlowThreadMaintainer::~CurrentRenderFlowThreadMaintainer()
 {
     if (!m_renderFlowThread)
         return;
     RenderView* view = m_renderFlowThread->view();
     ASSERT(view->flowThreadController()->currentRenderFlowThread() == m_renderFlowThread);
     view->flowThreadController()->setCurrentRenderFlowThread(m_previousRenderFlowThread);
 }
 
 
 } // namespace WebCore