*** DO NOT LAND *** Measure the size and complexity of the old multicol implementation.

Source/core/rendering/RenderView.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 11 matching lines @@
 #include "core/rendering/RenderView.h"
 
 #include "RuntimeEnabledFeatures.h"
 #include "core/dom/Document.h"
 #include "core/dom/Element.h"
 #include "core/html/HTMLDialogElement.h"
 #include "core/html/HTMLFrameOwnerElement.h"
 #include "core/html/HTMLIFrameElement.h"
 #include "core/frame/Frame.h"
 #include "core/page/Page.h"
-#include "core/rendering/ColumnInfo.h"
 #include "core/rendering/CompositedLayerMapping.h"
 #include "core/rendering/FlowThreadController.h"
 #include "core/rendering/GraphicsContextAnnotator.h"
 #include "core/rendering/HitTestResult.h"
 #include "core/rendering/LayoutRectRecorder.h"
 #include "core/rendering/RenderFlowThread.h"
 #include "core/rendering/RenderGeometryMap.h"
 #include "core/rendering/RenderLayer.h"
 #include "core/rendering/RenderLayerCompositor.h"
 #include "core/rendering/RenderSelectionInfo.h"
@@ skipping 54 matching lines @@
 {
     computedValues.m_extent = (!shouldUsePrintingLayout() && m_frameView) ? LayoutUnit(viewLogicalHeight()) : logicalHeight;
 }
 
 void RenderView::updateLogicalWidth()
 {
     if (!shouldUsePrintingLayout() && m_frameView)
         setLogicalWidth(viewLogicalWidth());
 }
 
-LayoutUnit RenderView::availableLogicalHeight(AvailableLogicalHeightType heightType) const
-{
-    // If we have columns, then the available logical height is reduced to the column height.
-    if (hasColumns())
-        return columnInfo()->columnHeight();
-    return RenderBlock::availableLogicalHeight(heightType);
-}
-
 bool RenderView::isChildAllowed(RenderObject* child, RenderStyle*) const
 {
     return child->isBox();
 }
 
 static bool dialogNeedsCentering(const RenderStyle* style)
 {
     return style->position() == AbsolutePosition && style->hasAutoTopAndBottom();
 }
 
@@ skipping 265 matching lines @@
 }
 
 bool RenderView::requiresColumns(int desiredColumnCount) const
 {
     if (m_frameView)
         return m_frameView->pagination().mode != Pagination::Unpaginated;
 
     return RenderBlock::requiresColumns(desiredColumnCount);
 }
 
-void RenderView::calcColumnWidth()
-{
-    int columnWidth = contentLogicalWidth();
-    if (m_frameView && style()->hasInlineColumnAxis()) {
-        if (int pageLength = m_frameView->pagination().pageLength)
-            columnWidth = pageLength;
-    }
-    setDesiredColumnCountAndWidth(1, columnWidth);
-}
-
-ColumnInfo::PaginationUnit RenderView::paginationUnit() const
-{
-    if (m_frameView)
-        return m_frameView->pagination().behavesLikeColumns ? ColumnInfo::Column : ColumnInfo::Page;
-
-    return ColumnInfo::Page;
-}
-
 void RenderView::paint(PaintInfo& paintInfo, const LayoutPoint& paintOffset)
 {
     // If we ever require layout but receive a paint anyway, something has gone horribly wrong.
     ASSERT(!needsLayout());
     // RenderViews should never be called to paint with an offset not on device pixels.
     ASSERT(LayoutPoint(IntPoint(paintOffset.x(), paintOffset.y())) == paintOffset);
 
     ANNOTATE_GRAPHICS_CONTEXT(paintInfo, this);
 
     // This avoids painting garbage between columns if there is a column gap.
@@ skipping 486 matching lines @@
     RenderObject* rootObject = document().documentElement() ? document().documentElement()->renderer() : 0;
     if (!rootObject)
         return false;
 
     RenderObject* rootRenderer = rootObject->rendererForRootBackground();
     return rootRenderer->hasEntirelyFixedBackground();
 }
 
 LayoutRect RenderView::backgroundRect(RenderBox* backgroundRenderer) const
 {
-    if (!hasColumns())
-        return unscaledDocumentRect();
-
-    ColumnInfo* columnInfo = this->columnInfo();
-    LayoutRect backgroundRect(0, 0, columnInfo->desiredColumnWidth(), columnInfo->columnHeight() * columnInfo->columnCount());
-    if (!isHorizontalWritingMode())
-        backgroundRect = backgroundRect.transposedRect();
-    backgroundRenderer->flipForWritingMode(backgroundRect);
-
-    return backgroundRect;
+    return unscaledDocumentRect();
 }
 
 IntRect RenderView::documentRect() const
 {
     FloatRect overflowRect(unscaledDocumentRect());
     if (hasTransform())
         overflowRect = layer()->currentTransform().mapRect(overflowRect);
     return IntRect(overflowRect);
 }
 
@@ skipping 10 matching lines @@
 {
     int width = 0;
     if (!shouldUsePrintingLayout() && m_frameView)
         width = m_frameView->layoutSize(scrollbarInclusion).width();
 
     return width;
 }
 
 int RenderView::viewLogicalHeight(ScrollableArea::IncludeScrollbarsInRect scrollbarInclusion) const
 {
-    int height = style()->isHorizontalWritingMode() ? viewHeight(scrollbarInclusion) : viewWidth(scrollbarInclusion);
-
-    if (hasColumns() && !style()->hasInlineColumnAxis()) {
-        if (int pageLength = m_frameView->pagination().pageLength)
-            height = pageLength;
-    }
-
-    return height;
+    return style()->isHorizontalWritingMode() ? viewHeight(scrollbarInclusion) : viewWidth(scrollbarInclusion);
 }
 
 float RenderView::zoomFactor() const
 {
     return m_frameView->frame().pageZoomFactor();
 }
 
 void RenderView::pushLayoutState(RenderObject* root)
 {
     ASSERT(m_layoutStateDisableCount == 0);
     ASSERT(m_layoutState == 0);
 
     pushLayoutStateForCurrentFlowThread(root);
     m_layoutState = new LayoutState(root);
 }
 
 bool RenderView::shouldDisableLayoutStateForSubtree(RenderObject* renderer) const
 {
     RenderObject* o = renderer;
     while (o) {
-        if (o->hasColumns() || o->hasTransform() || o->hasReflection())
+        if (o->hasTransform() || o->hasReflection())
             return true;
         o = o->container();
     }
     return false;
 }
 
 void RenderView::updateHitTestResult(HitTestResult& result, const LayoutPoint& point)
 {
     if (result.innerNode())
         return;
@@ skipping 101 matching lines @@
     return viewWidth(ScrollableArea::IncludeScrollbars) / scale;
 }
 
 double RenderView::layoutViewportHeight() const
 {
     float scale = m_frameView ? m_frameView->frame().pageZoomFactor() : 1;
     return viewHeight(ScrollableArea::IncludeScrollbars) / scale;
 }
 
 } // namespace WebCore