Revert of Divorce PaintInvalidationState from LayoutState

Source/core/rendering/PaintInvalidationState.cpp

-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "config.h"
-#include "core/rendering/PaintInvalidationState.h"
-
-#include "core/rendering/RenderInline.h"
-#include "core/rendering/RenderLayer.h"
-#include "core/rendering/RenderView.h"
-#include "core/rendering/svg/RenderSVGModelObject.h"
-#include "platform/Partitions.h"
-
-namespace WebCore {
-
-PaintInvalidationState::PaintInvalidationState(RenderObject& renderer)
-    : m_clipped(false)
-    , m_cachedOffsetsEnabled(true)
-    , m_paintInvalidationContainer(*renderer.containerForPaintInvalidation())
-    , m_renderer(renderer)
-{
-    bool establishesPaintInvalidationContainer = &m_renderer == &m_paintInvalidationContainer;
-    if (!establishesPaintInvalidationContainer) {
-        if (!renderer.supportsLayoutStateCachedOffsets()) {
-            m_cachedOffsetsEnabled = false;
-            return;
-        }
-        bool invalidationContainerSkipped;
-        RenderObject* container = renderer.container(&m_paintInvalidationContainer, &invalidationContainerSkipped);
-        if (container && !invalidationContainerSkipped) {
-            FloatPoint point = container->localToContainerPoint(FloatPoint(), &m_paintInvalidationContainer);
-            if (container->isTableRow())
-                point = FloatPoint(point.x() - toRenderBox(container)->x().toFloat(), point.y() - toRenderBox(container)->y().toFloat());
-            m_paintOffset = LayoutSize(point.x(), point.y());
-
-            applyClipIfNeeded(*container);
-        }
-    } else {
-        applyClipIfNeeded(m_renderer);
-    }
-}
-
-PaintInvalidationState::PaintInvalidationState(const PaintInvalidationState& next, RenderSVGModelObject& renderer, const RenderLayerModelObject& paintInvalidationContainer)
-    : m_clipped(next.m_clipped)
-    , m_cachedOffsetsEnabled(next.m_cachedOffsetsEnabled)
-    , m_paintInvalidationContainer(paintInvalidationContainer)
-    , m_renderer(renderer)
-{
-    // FIXME: SVG could probably benefit from a stack-based optimization like html does. crbug.com/391054
-    ASSERT(!m_cachedOffsetsEnabled);
-}
-
-PaintInvalidationState::PaintInvalidationState(const PaintInvalidationState& next, RenderInline& renderer, const RenderLayerModelObject& paintInvalidationContainer)
-    : m_clipped(next.m_clipped)
-    , m_cachedOffsetsEnabled(true)
-    , m_paintInvalidationContainer(paintInvalidationContainer)
-    , m_renderer(renderer)
-{
-    bool establishesPaintInvalidationContainer = &m_renderer == &m_paintInvalidationContainer;
-    if (!establishesPaintInvalidationContainer) {
-        if (!renderer.supportsLayoutStateCachedOffsets() || !next.m_cachedOffsetsEnabled) {
-            m_cachedOffsetsEnabled = false;
-        } else if (m_cachedOffsetsEnabled) {
-            m_paintOffset = next.m_paintOffset;
-            // Handle relative positioned inline.
-            if (renderer.style()->hasInFlowPosition() && renderer.layer())
-                m_paintOffset += renderer.layer()->offsetForInFlowPosition();
-
-            // RenderInline can't be out-of-flow positioned.
-        }
-    }
-
-    // The following can't apply to RenderInline so we just propagate them.
-    m_clipped = next.m_clipped;
-    m_clipRect = next.m_clipRect;
-}
-
-PaintInvalidationState::PaintInvalidationState(const PaintInvalidationState& next, RenderBox& renderer, const RenderLayerModelObject& paintInvalidationContainer)
-    : m_clipped(false)
-    , m_cachedOffsetsEnabled(true)
-    , m_paintInvalidationContainer(paintInvalidationContainer)
-    , m_renderer(renderer)
-{
-    bool establishesPaintInvalidationContainer = &m_renderer == &m_paintInvalidationContainer;
-    bool fixed = m_renderer.isOutOfFlowPositioned() && m_renderer.style()->position() == FixedPosition;
-
-    if (!establishesPaintInvalidationContainer) {
-        if (!renderer.supportsLayoutStateCachedOffsets() || !next.m_cachedOffsetsEnabled) {
-            m_cachedOffsetsEnabled = false;
-        } else {
-            LayoutSize offset = m_renderer.isTableRow() ? LayoutSize() : renderer.locationOffset();
-            if (fixed) {
-                // FIXME: This doesn't work correctly with transforms.
-                FloatPoint fixedOffset = m_renderer.view()->localToAbsolute(FloatPoint(), IsFixed);
-                m_paintOffset = LayoutSize(fixedOffset.x(), fixedOffset.y()) + offset;
-            } else {
-                m_paintOffset = next.m_paintOffset + offset;
-            }
-
-            if (m_renderer.isOutOfFlowPositioned() && !fixed) {
-                if (RenderObject* container = m_renderer.container()) {
-                    if (container->style()->hasInFlowPosition() && container->isRenderInline())
-                        m_paintOffset += toRenderInline(container)->offsetForInFlowPositionedInline(renderer);
-                }
-            }
-
-            if (m_renderer.style()->hasInFlowPosition() && renderer.hasLayer())
-                m_paintOffset += renderer.layer()->offsetForInFlowPosition();
-        }
-    }
-
-    m_clipped = !fixed && next.m_clipped;
-    if (m_clipped)
-        m_clipRect = next.m_clipRect;
-
-    applyClipIfNeeded(renderer);
-
-    // FIXME: <http://bugs.webkit.org/show_bug.cgi?id=13443> Apply control clip if present.
-}
-
-void PaintInvalidationState::applyClipIfNeeded(const RenderObject& renderer)
-{
-    if (!renderer.hasOverflowClip())
-        return;
-
-    const RenderBox& box = toRenderBox(renderer);
-    LayoutRect clipRect(toPoint(m_paintOffset), box.cachedSizeForOverflowClip());
-    if (m_clipped) {
-        m_clipRect.intersect(clipRect);
-    } else {
-        m_clipRect = clipRect;
-        m_clipped = true;
-    }
-    m_paintOffset -= box.scrolledContentOffset();
-}
-
-} // namespace WebCore