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Unified Diff: sky/engine/core/rendering/FloatingObjects.cpp

Issue 689733003: Remove most of FloatingObject. (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: Created 6 years, 2 months ago
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Index: sky/engine/core/rendering/FloatingObjects.cpp
diff --git a/sky/engine/core/rendering/FloatingObjects.cpp b/sky/engine/core/rendering/FloatingObjects.cpp
deleted file mode 100644
index c56299d090801b295c34d759fef432fe30ddc761..0000000000000000000000000000000000000000
--- a/sky/engine/core/rendering/FloatingObjects.cpp
+++ /dev/null
@@ -1,531 +0,0 @@
-/*
- * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
- * (C) 1999 Antti Koivisto (koivisto@kde.org)
- * (C) 2007 David Smith (catfish.man@gmail.com)
- * Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
- * Copyright (C) Research In Motion Limited 2010. 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,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Library General Public License for more details.
- *
- * You should have received a copy of the GNU Library General Public License
- * along with this library; see the file COPYING.LIB. If not, write to
- * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
- * Boston, MA 02110-1301, USA.
- */
-
-#include "config.h"
-#include "core/rendering/FloatingObjects.h"
-
-#include "core/rendering/RenderBlockFlow.h"
-#include "core/rendering/RenderBox.h"
-#include "core/rendering/RenderView.h"
-
-using namespace WTF;
-
-namespace blink {
-
-struct SameSizeAsFloatingObject {
- void* pointers[2];
- LayoutRect rect;
- uint32_t bitfields : 8;
-};
-
-COMPILE_ASSERT(sizeof(FloatingObject) == sizeof(SameSizeAsFloatingObject), FloatingObject_should_stay_small);
-
-FloatingObject::FloatingObject(RenderBox* renderer)
- : m_renderer(renderer)
- , m_originatingLine(0)
- , m_shouldPaint(true)
- , m_isDescendant(false)
- , m_isPlaced(false)
-#if ENABLE(ASSERT)
- , m_isInPlacedTree(false)
-#endif
-{
- EFloat type = renderer->style()->floating();
- ASSERT(type != NoFloat);
- if (type == LeftFloat)
- m_type = FloatLeft;
- else if (type == RightFloat)
- m_type = FloatRight;
-}
-
-FloatingObject::FloatingObject(RenderBox* renderer, Type type, const LayoutRect& frameRect, bool shouldPaint, bool isDescendant)
- : m_renderer(renderer)
- , m_originatingLine(0)
- , m_frameRect(frameRect)
- , m_type(type)
- , m_shouldPaint(shouldPaint)
- , m_isDescendant(isDescendant)
- , m_isPlaced(true)
-#if ENABLE(ASSERT)
- , m_isInPlacedTree(false)
-#endif
-{
-}
-
-PassOwnPtr<FloatingObject> FloatingObject::create(RenderBox* renderer)
-{
- OwnPtr<FloatingObject> newObj = adoptPtr(new FloatingObject(renderer));
- newObj->setShouldPaint(!renderer->hasSelfPaintingLayer()); // If a layer exists, the float will paint itself. Otherwise someone else will.
- newObj->setIsDescendant(true);
-
- return newObj.release();
-}
-
-PassOwnPtr<FloatingObject> FloatingObject::copyToNewContainer(LayoutSize offset, bool shouldPaint, bool isDescendant) const
-{
- return adoptPtr(new FloatingObject(renderer(), type(), LayoutRect(frameRect().location() - offset, frameRect().size()), shouldPaint, isDescendant));
-}
-
-PassOwnPtr<FloatingObject> FloatingObject::unsafeClone() const
-{
- OwnPtr<FloatingObject> cloneObject = adoptPtr(new FloatingObject(renderer(), type(), m_frameRect, m_shouldPaint, m_isDescendant));
- cloneObject->m_isPlaced = m_isPlaced;
- return cloneObject.release();
-}
-
-template <FloatingObject::Type FloatTypeValue>
-class ComputeFloatOffsetAdapter {
-public:
- typedef FloatingObjectInterval IntervalType;
-
- ComputeFloatOffsetAdapter(const RenderBlockFlow* renderer, int lineTop, int lineBottom, LayoutUnit offset)
- : m_renderer(renderer)
- , m_lineTop(lineTop)
- , m_lineBottom(lineBottom)
- , m_offset(offset)
- , m_outermostFloat(0)
- {
- }
-
- virtual ~ComputeFloatOffsetAdapter() { }
-
- int lowValue() const { return m_lineTop; }
- int highValue() const { return m_lineBottom; }
- void collectIfNeeded(const IntervalType&);
-
- LayoutUnit offset() const { return m_offset; }
-
-protected:
- virtual bool updateOffsetIfNeeded(const FloatingObject&) = 0;
-
- const RenderBlockFlow* m_renderer;
- int m_lineTop;
- int m_lineBottom;
- LayoutUnit m_offset;
- const FloatingObject* m_outermostFloat;
-};
-
-template <FloatingObject::Type FloatTypeValue>
-class ComputeFloatOffsetForFloatLayoutAdapter : public ComputeFloatOffsetAdapter<FloatTypeValue> {
-public:
- ComputeFloatOffsetForFloatLayoutAdapter(const RenderBlockFlow* renderer, LayoutUnit lineTop, LayoutUnit lineBottom, LayoutUnit offset)
- : ComputeFloatOffsetAdapter<FloatTypeValue>(renderer, lineTop, lineBottom, offset)
- {
- }
-
- virtual ~ComputeFloatOffsetForFloatLayoutAdapter() { }
-
- LayoutUnit heightRemaining() const;
-
-protected:
- virtual bool updateOffsetIfNeeded(const FloatingObject&) override final;
-};
-
-template <FloatingObject::Type FloatTypeValue>
-class ComputeFloatOffsetForLineLayoutAdapter : public ComputeFloatOffsetAdapter<FloatTypeValue> {
-public:
- ComputeFloatOffsetForLineLayoutAdapter(const RenderBlockFlow* renderer, LayoutUnit lineTop, LayoutUnit lineBottom, LayoutUnit offset)
- : ComputeFloatOffsetAdapter<FloatTypeValue>(renderer, lineTop, lineBottom, offset)
- {
- }
-
- virtual ~ComputeFloatOffsetForLineLayoutAdapter() { }
-
-protected:
- virtual bool updateOffsetIfNeeded(const FloatingObject&) override final;
-};
-
-
-FloatingObjects::~FloatingObjects()
-{
-}
-void FloatingObjects::clearLineBoxTreePointers()
-{
- // Clear references to originating lines, since the lines are being deleted
- FloatingObjectSetIterator end = m_set.end();
- for (FloatingObjectSetIterator it = m_set.begin(); it != end; ++it) {
- ASSERT(!((*it)->originatingLine()) || (*it)->originatingLine()->renderer() == m_renderer);
- (*it)->setOriginatingLine(0);
- }
-}
-
-FloatingObjects::FloatingObjects(const RenderBlockFlow* renderer, bool horizontalWritingMode)
- : m_placedFloatsTree(UninitializedTree)
- , m_leftObjectsCount(0)
- , m_rightObjectsCount(0)
- , m_horizontalWritingMode(horizontalWritingMode)
- , m_renderer(renderer)
- , m_cachedHorizontalWritingMode(false)
-{
-}
-
-void FloatingObjects::clear()
-{
- m_set.clear();
- m_placedFloatsTree.clear();
- m_leftObjectsCount = 0;
- m_rightObjectsCount = 0;
- markLowestFloatLogicalBottomCacheAsDirty();
-}
-
-LayoutUnit FloatingObjects::lowestFloatLogicalBottom(FloatingObject::Type floatType)
-{
- bool isInHorizontalWritingMode = m_horizontalWritingMode;
- if (floatType != FloatingObject::FloatLeftRight) {
- if (hasLowestFloatLogicalBottomCached(isInHorizontalWritingMode, floatType))
- return getCachedlowestFloatLogicalBottom(floatType);
- } else {
- if (hasLowestFloatLogicalBottomCached(isInHorizontalWritingMode, FloatingObject::FloatLeft) && hasLowestFloatLogicalBottomCached(isInHorizontalWritingMode, FloatingObject::FloatRight)) {
- return std::max(getCachedlowestFloatLogicalBottom(FloatingObject::FloatLeft),
- getCachedlowestFloatLogicalBottom(FloatingObject::FloatRight));
- }
- }
-
- LayoutUnit lowestFloatBottom = 0;
- const FloatingObjectSet& floatingObjectSet = set();
- FloatingObjectSetIterator end = floatingObjectSet.end();
- if (floatType == FloatingObject::FloatLeftRight) {
- LayoutUnit lowestFloatBottomLeft = 0;
- LayoutUnit lowestFloatBottomRight = 0;
- for (FloatingObjectSetIterator it = floatingObjectSet.begin(); it != end; ++it) {
- FloatingObject* floatingObject = it->get();
- if (floatingObject->isPlaced()) {
- FloatingObject::Type curType = floatingObject->type();
- LayoutUnit curFloatLogicalBottom = m_renderer->logicalBottomForFloat(floatingObject);
- if (curType & FloatingObject::FloatLeft)
- lowestFloatBottomLeft = std::max(lowestFloatBottomLeft, curFloatLogicalBottom);
- if (curType & FloatingObject::FloatRight)
- lowestFloatBottomRight = std::max(lowestFloatBottomRight, curFloatLogicalBottom);
- }
- }
- lowestFloatBottom = std::max(lowestFloatBottomLeft, lowestFloatBottomRight);
- setCachedLowestFloatLogicalBottom(isInHorizontalWritingMode, FloatingObject::FloatLeft, lowestFloatBottomLeft);
- setCachedLowestFloatLogicalBottom(isInHorizontalWritingMode, FloatingObject::FloatRight, lowestFloatBottomRight);
- } else {
- for (FloatingObjectSetIterator it = floatingObjectSet.begin(); it != end; ++it) {
- FloatingObject* floatingObject = it->get();
- if (floatingObject->isPlaced() && floatingObject->type() == floatType)
- lowestFloatBottom = std::max(lowestFloatBottom, m_renderer->logicalBottomForFloat(floatingObject));
- }
- setCachedLowestFloatLogicalBottom(isInHorizontalWritingMode, floatType, lowestFloatBottom);
- }
-
- return lowestFloatBottom;
-}
-
-bool FloatingObjects::hasLowestFloatLogicalBottomCached(bool isHorizontal, FloatingObject::Type type) const
-{
- int floatIndex = static_cast<int>(type) - 1;
- ASSERT(floatIndex < static_cast<int>(sizeof(m_lowestFloatBottomCache) / sizeof(FloatBottomCachedValue)));
- ASSERT(floatIndex >= 0);
- return (m_cachedHorizontalWritingMode == isHorizontal && !m_lowestFloatBottomCache[floatIndex].dirty);
-}
-
-LayoutUnit FloatingObjects::getCachedlowestFloatLogicalBottom(FloatingObject::Type type) const
-{
- int floatIndex = static_cast<int>(type) - 1;
- ASSERT(floatIndex < static_cast<int>(sizeof(m_lowestFloatBottomCache) / sizeof(FloatBottomCachedValue)));
- ASSERT(floatIndex >= 0);
- return m_lowestFloatBottomCache[floatIndex].value;
-}
-
-void FloatingObjects::setCachedLowestFloatLogicalBottom(bool isHorizontal, FloatingObject::Type type, LayoutUnit value)
-{
- int floatIndex = static_cast<int>(type) - 1;
- ASSERT(floatIndex < static_cast<int>(sizeof(m_lowestFloatBottomCache) / sizeof(FloatBottomCachedValue)));
- ASSERT(floatIndex >= 0);
- m_cachedHorizontalWritingMode = isHorizontal;
- m_lowestFloatBottomCache[floatIndex].value = value;
- m_lowestFloatBottomCache[floatIndex].dirty = false;
-}
-
-void FloatingObjects::markLowestFloatLogicalBottomCacheAsDirty()
-{
- for (size_t i = 0; i < sizeof(m_lowestFloatBottomCache) / sizeof(FloatBottomCachedValue); ++i)
- m_lowestFloatBottomCache[i].dirty = true;
-}
-
-void FloatingObjects::moveAllToFloatInfoMap(RendererToFloatInfoMap& map)
-{
- while (!m_set.isEmpty()) {
- OwnPtr<FloatingObject> floatingObject = m_set.takeFirst();
- RenderBox* renderer = floatingObject->renderer();
- map.add(renderer, floatingObject.release());
- }
- clear();
-}
-
-inline void FloatingObjects::increaseObjectsCount(FloatingObject::Type type)
-{
- if (type == FloatingObject::FloatLeft)
- m_leftObjectsCount++;
- else
- m_rightObjectsCount++;
-}
-
-inline void FloatingObjects::decreaseObjectsCount(FloatingObject::Type type)
-{
- if (type == FloatingObject::FloatLeft)
- m_leftObjectsCount--;
- else
- m_rightObjectsCount--;
-}
-
-inline FloatingObjectInterval FloatingObjects::intervalForFloatingObject(FloatingObject* floatingObject)
-{
- if (m_horizontalWritingMode)
- return FloatingObjectInterval(floatingObject->frameRect().pixelSnappedY(), floatingObject->frameRect().pixelSnappedMaxY(), floatingObject);
- return FloatingObjectInterval(floatingObject->frameRect().pixelSnappedX(), floatingObject->frameRect().pixelSnappedMaxX(), floatingObject);
-}
-
-void FloatingObjects::addPlacedObject(FloatingObject* floatingObject)
-{
- ASSERT(!floatingObject->isInPlacedTree());
-
- floatingObject->setIsPlaced(true);
- if (m_placedFloatsTree.isInitialized())
- m_placedFloatsTree.add(intervalForFloatingObject(floatingObject));
-
-#if ENABLE(ASSERT)
- floatingObject->setIsInPlacedTree(true);
-#endif
- markLowestFloatLogicalBottomCacheAsDirty();
-}
-
-void FloatingObjects::removePlacedObject(FloatingObject* floatingObject)
-{
- ASSERT(floatingObject->isPlaced() && floatingObject->isInPlacedTree());
-
- if (m_placedFloatsTree.isInitialized()) {
- bool removed = m_placedFloatsTree.remove(intervalForFloatingObject(floatingObject));
- ASSERT_UNUSED(removed, removed);
- }
-
- floatingObject->setIsPlaced(false);
-#if ENABLE(ASSERT)
- floatingObject->setIsInPlacedTree(false);
-#endif
- markLowestFloatLogicalBottomCacheAsDirty();
-}
-
-FloatingObject* FloatingObjects::add(PassOwnPtr<FloatingObject> floatingObject)
-{
- FloatingObject* newObject = floatingObject.leakPtr();
- increaseObjectsCount(newObject->type());
- m_set.add(adoptPtr(newObject));
- if (newObject->isPlaced())
- addPlacedObject(newObject);
- markLowestFloatLogicalBottomCacheAsDirty();
- return newObject;
-}
-
-void FloatingObjects::remove(FloatingObject* toBeRemoved)
-{
- decreaseObjectsCount(toBeRemoved->type());
- OwnPtr<FloatingObject> floatingObject = m_set.take(toBeRemoved);
- ASSERT(floatingObject->isPlaced() || !floatingObject->isInPlacedTree());
- if (floatingObject->isPlaced())
- removePlacedObject(floatingObject.get());
- markLowestFloatLogicalBottomCacheAsDirty();
- ASSERT(!floatingObject->originatingLine());
-}
-
-void FloatingObjects::computePlacedFloatsTree()
-{
- ASSERT(!m_placedFloatsTree.isInitialized());
- if (m_set.isEmpty())
- return;
- m_placedFloatsTree.initIfNeeded(m_renderer->view()->intervalArena());
- FloatingObjectSetIterator it = m_set.begin();
- FloatingObjectSetIterator end = m_set.end();
- for (; it != end; ++it) {
- FloatingObject* floatingObject = it->get();
- if (floatingObject->isPlaced())
- m_placedFloatsTree.add(intervalForFloatingObject(floatingObject));
- }
-}
-
-LayoutUnit FloatingObjects::logicalLeftOffsetForPositioningFloat(LayoutUnit fixedOffset, LayoutUnit logicalTop, LayoutUnit *heightRemaining)
-{
- int logicalTopAsInt = roundToInt(logicalTop);
- ComputeFloatOffsetForFloatLayoutAdapter<FloatingObject::FloatLeft> adapter(m_renderer, logicalTopAsInt, logicalTopAsInt, fixedOffset);
- placedFloatsTree().allOverlapsWithAdapter(adapter);
-
- if (heightRemaining)
- *heightRemaining = adapter.heightRemaining();
-
- return adapter.offset();
-}
-
-LayoutUnit FloatingObjects::logicalRightOffsetForPositioningFloat(LayoutUnit fixedOffset, LayoutUnit logicalTop, LayoutUnit *heightRemaining)
-{
- int logicalTopAsInt = roundToInt(logicalTop);
- ComputeFloatOffsetForFloatLayoutAdapter<FloatingObject::FloatRight> adapter(m_renderer, logicalTopAsInt, logicalTopAsInt, fixedOffset);
- placedFloatsTree().allOverlapsWithAdapter(adapter);
-
- if (heightRemaining)
- *heightRemaining = adapter.heightRemaining();
-
- return std::min(fixedOffset, adapter.offset());
-}
-
-LayoutUnit FloatingObjects::logicalLeftOffset(LayoutUnit fixedOffset, LayoutUnit logicalTop, LayoutUnit logicalHeight)
-{
- ComputeFloatOffsetForLineLayoutAdapter<FloatingObject::FloatLeft> adapter(m_renderer, roundToInt(logicalTop), roundToInt(logicalTop + logicalHeight), fixedOffset);
- placedFloatsTree().allOverlapsWithAdapter(adapter);
-
- return adapter.offset();
-}
-
-LayoutUnit FloatingObjects::logicalRightOffset(LayoutUnit fixedOffset, LayoutUnit logicalTop, LayoutUnit logicalHeight)
-{
- ComputeFloatOffsetForLineLayoutAdapter<FloatingObject::FloatRight> adapter(m_renderer, roundToInt(logicalTop), roundToInt(logicalTop + logicalHeight), fixedOffset);
- placedFloatsTree().allOverlapsWithAdapter(adapter);
-
- return std::min(fixedOffset, adapter.offset());
-}
-
-FloatingObjects::FloatBottomCachedValue::FloatBottomCachedValue()
- : value(0)
- , dirty(true)
-{
-}
-
-inline static bool rangesIntersect(int floatTop, int floatBottom, int objectTop, int objectBottom)
-{
- if (objectTop >= floatBottom || objectBottom < floatTop)
- return false;
-
- // The top of the object overlaps the float
- if (objectTop >= floatTop)
- return true;
-
- // The object encloses the float
- if (objectTop < floatTop && objectBottom > floatBottom)
- return true;
-
- // The bottom of the object overlaps the float
- if (objectBottom > objectTop && objectBottom > floatTop && objectBottom <= floatBottom)
- return true;
-
- return false;
-}
-
-template<>
-inline bool ComputeFloatOffsetForFloatLayoutAdapter<FloatingObject::FloatLeft>::updateOffsetIfNeeded(const FloatingObject& floatingObject)
-{
- LayoutUnit logicalRight = m_renderer->logicalRightForFloat(&floatingObject);
- if (logicalRight > m_offset) {
- m_offset = logicalRight;
- return true;
- }
- return false;
-}
-
-template<>
-inline bool ComputeFloatOffsetForFloatLayoutAdapter<FloatingObject::FloatRight>::updateOffsetIfNeeded(const FloatingObject& floatingObject)
-{
- LayoutUnit logicalLeft = m_renderer->logicalLeftForFloat(&floatingObject);
- if (logicalLeft < m_offset) {
- m_offset = logicalLeft;
- return true;
- }
- return false;
-}
-
-template <FloatingObject::Type FloatTypeValue>
-LayoutUnit ComputeFloatOffsetForFloatLayoutAdapter<FloatTypeValue>::heightRemaining() const
-{
- return this->m_outermostFloat ? this->m_renderer->logicalBottomForFloat(this->m_outermostFloat) - this->m_lineTop : LayoutUnit(1);
-}
-
-template <FloatingObject::Type FloatTypeValue>
-inline void ComputeFloatOffsetAdapter<FloatTypeValue>::collectIfNeeded(const IntervalType& interval)
-{
- const FloatingObject* floatingObject = interval.data();
- if (floatingObject->type() != FloatTypeValue || !rangesIntersect(interval.low(), interval.high(), m_lineTop, m_lineBottom))
- return;
-
- // Make sure the float hasn't changed since it was added to the placed floats tree.
- ASSERT(floatingObject->isPlaced());
- ASSERT(interval.low() == m_renderer->pixelSnappedLogicalTopForFloat(floatingObject));
- ASSERT(interval.high() == m_renderer->pixelSnappedLogicalBottomForFloat(floatingObject));
-
- bool floatIsNewExtreme = updateOffsetIfNeeded(*floatingObject);
- if (floatIsNewExtreme)
- m_outermostFloat = floatingObject;
-}
-
-template<>
-inline bool ComputeFloatOffsetForLineLayoutAdapter<FloatingObject::FloatLeft>::updateOffsetIfNeeded(const FloatingObject& floatingObject)
-{
- LayoutUnit logicalRight = m_renderer->logicalRightForFloat(&floatingObject);
- if (ShapeOutsideInfo* shapeOutside = floatingObject.renderer()->shapeOutsideInfo()) {
- ShapeOutsideDeltas shapeDeltas = shapeOutside->computeDeltasForContainingBlockLine(*m_renderer, floatingObject, m_lineTop, m_lineBottom - m_lineTop);
- if (!shapeDeltas.lineOverlapsShape())
- return false;
-
- logicalRight += shapeDeltas.rightMarginBoxDelta();
- }
- if (logicalRight > m_offset) {
- m_offset = logicalRight;
- return true;
- }
-
- return false;
-}
-
-template<>
-inline bool ComputeFloatOffsetForLineLayoutAdapter<FloatingObject::FloatRight>::updateOffsetIfNeeded(const FloatingObject& floatingObject)
-{
- LayoutUnit logicalLeft = m_renderer->logicalLeftForFloat(&floatingObject);
- if (ShapeOutsideInfo* shapeOutside = floatingObject.renderer()->shapeOutsideInfo()) {
- ShapeOutsideDeltas shapeDeltas = shapeOutside->computeDeltasForContainingBlockLine(*m_renderer, floatingObject, m_lineTop, m_lineBottom - m_lineTop);
- if (!shapeDeltas.lineOverlapsShape())
- return false;
-
- logicalLeft += shapeDeltas.leftMarginBoxDelta();
- }
- if (logicalLeft < m_offset) {
- m_offset = logicalLeft;
- return true;
- }
-
- return false;
-}
-
-#ifndef NDEBUG
-// These helpers are only used by the PODIntervalTree for debugging purposes.
-String ValueToString<int>::string(const int value)
-{
- return String::number(value);
-}
-
-String ValueToString<FloatingObject*>::string(const FloatingObject* floatingObject)
-{
- return String::format("%p (%dx%d %dx%d)", floatingObject, floatingObject->frameRect().pixelSnappedX(), floatingObject->frameRect().pixelSnappedY(), floatingObject->frameRect().pixelSnappedMaxX(), floatingObject->frameRect().pixelSnappedMaxY());
-}
-#endif
-
-
-} // namespace blink
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