#include "config.h"
#include "RenderObject.h"
#include "AXObjectCache.h"
#include "Chrome.h"
#include "ContentData.h"
#include "CursorList.h"
#include "DashArray.h"
#include "EditingBoundary.h"
#include "FloatQuad.h"
#include "FlowThreadController.h"
#include "Frame.h"
#include "FrameView.h"
#include "GraphicsContext.h"
#include "HTMLElement.h"
#include "HTMLNames.h"
#include "HitTestResult.h"
#include "Page.h"
#include "RenderArena.h"
#include "RenderCounter.h"
#include "RenderDeprecatedFlexibleBox.h"
#include "RenderFlexibleBox.h"
#include "RenderGeometryMap.h"
#include "RenderImage.h"
#include "RenderImageResourceStyleImage.h"
#include "RenderInline.h"
#include "RenderLayer.h"
#include "RenderListItem.h"
#include "RenderMultiColumnBlock.h"
#include "RenderNamedFlowThread.h"
#include "RenderRegion.h"
#include "RenderRuby.h"
#include "RenderRubyText.h"
#include "RenderScrollbarPart.h"
#include "RenderTableCaption.h"
#include "RenderTableCell.h"
#include "RenderTableCol.h"
#include "RenderTableRow.h"
#include "RenderTheme.h"
#include "RenderView.h"
#include "Settings.h"
#include "StyleResolver.h"
#include "TransformState.h"
#include "htmlediting.h"
#include <algorithm>
#include <stdio.h>
#include <wtf/RefCountedLeakCounter.h>
#include <wtf/UnusedParam.h>
#if USE(ACCELERATED_COMPOSITING)
#include "RenderLayerCompositor.h"
#endif
#if ENABLE(SVG)
#include "RenderSVGResourceContainer.h"
#include "SVGRenderSupport.h"
#endif
using namespace std;
namespace WebCore {
using namespace HTMLNames;
#ifndef NDEBUG
static void* baseOfRenderObjectBeingDeleted;
RenderObject::SetLayoutNeededForbiddenScope::SetLayoutNeededForbiddenScope(RenderObject* renderObject)
: m_renderObject(renderObject)
, m_preexistingForbidden(m_renderObject->isSetNeedsLayoutForbidden())
{
m_renderObject->setNeedsLayoutIsForbidden(true);
}
RenderObject::SetLayoutNeededForbiddenScope::~SetLayoutNeededForbiddenScope()
{
m_renderObject->setNeedsLayoutIsForbidden(m_preexistingForbidden);
}
#endif
struct SameSizeAsRenderObject {
virtual ~SameSizeAsRenderObject() { } void* pointers[5];
#ifndef NDEBUG
unsigned m_debugBitfields : 2;
#endif
unsigned m_bitfields;
};
COMPILE_ASSERT(sizeof(RenderObject) == sizeof(SameSizeAsRenderObject), RenderObject_should_stay_small);
bool RenderObject::s_affectsParentBlock = false;
RenderObjectAncestorLineboxDirtySet* RenderObject::s_ancestorLineboxDirtySet = 0;
void* RenderObject::operator new(size_t sz, RenderArena* renderArena)
{
return renderArena->allocate(sz);
}
void RenderObject::operator delete(void* ptr, size_t sz)
{
ASSERT(baseOfRenderObjectBeingDeleted == ptr);
*(size_t *)ptr = sz;
}
RenderObject* RenderObject::createObject(Node* node, RenderStyle* style)
{
Document* doc = node->document();
RenderArena* arena = doc->renderArena();
const ContentData* contentData = style->contentData();
if (contentData && !contentData->next() && contentData->isImage() && doc != node) {
RenderImage* image = new (arena) RenderImage(node);
image->setStyle(style);
if (const StyleImage* styleImage = static_cast<const ImageContentData*>(contentData)->image()) {
image->setImageResource(RenderImageResourceStyleImage::create(const_cast<StyleImage*>(styleImage)));
image->setIsGeneratedContent();
} else
image->setImageResource(RenderImageResource::create());
return image;
}
if (node->hasTagName(rubyTag)) {
if (style->display() == INLINE)
return new (arena) RenderRubyAsInline(node);
else if (style->display() == BLOCK)
return new (arena) RenderRubyAsBlock(node);
}
if (node->hasTagName(rtTag) && style->display() == BLOCK)
return new (arena) RenderRubyText(node);
switch (style->display()) {
#if ENABLE(CSS_GRID_LAYOUT)
case GRID:
case INLINE_GRID:
#endif
case NONE:
return 0;
case INLINE:
return new (arena) RenderInline(node);
case BLOCK:
case INLINE_BLOCK:
case RUN_IN:
case COMPACT:
if (doc->cssRegionsEnabled() && !style->regionThread().isEmpty() && doc->renderView())
return new (arena) RenderRegion(node, doc->renderView()->flowThreadController()->ensureRenderFlowThreadWithName(style->regionThread()));
if ((!style->hasAutoColumnCount() || !style->hasAutoColumnWidth()) && doc->regionBasedColumnsEnabled())
return new (arena) RenderMultiColumnBlock(node);
return new (arena) RenderBlock(node);
case LIST_ITEM:
return new (arena) RenderListItem(node);
case TABLE:
case INLINE_TABLE:
return new (arena) RenderTable(node);
case TABLE_ROW_GROUP:
case TABLE_HEADER_GROUP:
case TABLE_FOOTER_GROUP:
return new (arena) RenderTableSection(node);
case TABLE_ROW:
return new (arena) RenderTableRow(node);
case TABLE_COLUMN_GROUP:
case TABLE_COLUMN:
return new (arena) RenderTableCol(node);
case TABLE_CELL:
return new (arena) RenderTableCell(node);
case TABLE_CAPTION:
return new (arena) RenderTableCaption(node);
case BOX:
case INLINE_BOX:
return new (arena) RenderDeprecatedFlexibleBox(node);
#if ENABLE(CSS3_FLEXBOX)
case FLEXBOX:
case INLINE_FLEXBOX:
return new (arena) RenderFlexibleBox(node);
#endif
}
return 0;
}
DEFINE_DEBUG_ONLY_GLOBAL(WTF::RefCountedLeakCounter, renderObjectCounter, ("RenderObject"));
RenderObject::RenderObject(Node* node)
: CachedImageClient()
, m_style(0)
, m_node(node)
, m_parent(0)
, m_previous(0)
, m_next(0)
#ifndef NDEBUG
, m_hasAXObject(false)
, m_setNeedsLayoutForbidden(false)
#endif
, m_bitfields(node)
{
#ifndef NDEBUG
renderObjectCounter.increment();
#endif
ASSERT(node);
}
RenderObject::~RenderObject()
{
#ifndef NDEBUG
ASSERT(!m_hasAXObject);
renderObjectCounter.decrement();
#endif
}
RenderTheme* RenderObject::theme() const
{
ASSERT(document()->page());
return document()->page()->theme();
}
bool RenderObject::isDescendantOf(const RenderObject* obj) const
{
for (const RenderObject* r = this; r; r = r->m_parent) {
if (r == obj)
return true;
}
return false;
}
bool RenderObject::isBody() const
{
return node() && node()->hasTagName(bodyTag);
}
bool RenderObject::isHR() const
{
return node() && node()->hasTagName(hrTag);
}
bool RenderObject::isLegend() const
{
return node() && node()->hasTagName(legendTag);
}
bool RenderObject::isHTMLMarquee() const
{
return node() && node()->renderer() == this && node()->hasTagName(marqueeTag);
}
void RenderObject::addChild(RenderObject* newChild, RenderObject* beforeChild)
{
RenderObjectChildList* children = virtualChildren();
ASSERT(children);
if (!children)
return;
bool needsTable = false;
if (newChild->isTableCol() && newChild->style()->display() == TABLE_COLUMN_GROUP)
needsTable = !isTable();
else if (newChild->isTableCaption())
needsTable = !isTable();
else if (newChild->isTableSection())
needsTable = !isTable();
else if (newChild->isTableRow())
needsTable = !isTableSection();
else if (newChild->isTableCell()) {
needsTable = !isTableRow();
if (needsTable && isTableCell() && !children->firstChild() && !newChild->isTableCell())
needsTable = false;
}
if (needsTable) {
RenderTable* table;
RenderObject* afterChild = beforeChild ? beforeChild->previousSibling() : children->lastChild();
if (afterChild && afterChild->isAnonymous() && afterChild->isTable() && !afterChild->isBeforeContent())
table = toRenderTable(afterChild);
else {
table = RenderTable::createAnonymousWithParentRenderer(this);
addChild(table, beforeChild);
}
table->addChild(newChild);
} else {
children->insertChildNode(this, newChild, beforeChild);
}
if (newChild->isText() && newChild->style()->textTransform() == CAPITALIZE)
toRenderText(newChild)->transformText();
if (newChild->hasLayer() && !layerCreationAllowedForSubtree())
toRenderBoxModelObject(newChild)->layer()->removeOnlyThisLayer();
#if ENABLE(SVG)
SVGRenderSupport::childAdded(this, newChild);
#endif
}
void RenderObject::removeChild(RenderObject* oldChild)
{
RenderObjectChildList* children = virtualChildren();
ASSERT(children);
if (!children)
return;
children->removeChildNode(this, oldChild);
}
RenderObject* RenderObject::nextInPreOrder() const
{
if (RenderObject* o = firstChild())
return o;
return nextInPreOrderAfterChildren();
}
RenderObject* RenderObject::nextInPreOrderAfterChildren() const
{
RenderObject* o;
if (!(o = nextSibling())) {
o = parent();
while (o && !o->nextSibling())
o = o->parent();
if (o)
o = o->nextSibling();
}
return o;
}
RenderObject* RenderObject::nextInPreOrder(const RenderObject* stayWithin) const
{
if (RenderObject* o = firstChild())
return o;
return nextInPreOrderAfterChildren(stayWithin);
}
RenderObject* RenderObject::nextInPreOrderAfterChildren(const RenderObject* stayWithin) const
{
if (this == stayWithin)
return 0;
const RenderObject* current = this;
RenderObject* next;
while (!(next = current->nextSibling())) {
current = current->parent();
if (!current || current == stayWithin)
return 0;
}
return next;
}
RenderObject* RenderObject::previousInPreOrder() const
{
if (RenderObject* o = previousSibling()) {
while (o->lastChild())
o = o->lastChild();
return o;
}
return parent();
}
RenderObject* RenderObject::childAt(unsigned index) const
{
RenderObject* child = firstChild();
for (unsigned i = 0; child && i < index; i++)
child = child->nextSibling();
return child;
}
RenderObject* RenderObject::firstLeafChild() const
{
RenderObject* r = firstChild();
while (r) {
RenderObject* n = 0;
n = r->firstChild();
if (!n)
break;
r = n;
}
return r;
}
RenderObject* RenderObject::lastLeafChild() const
{
RenderObject* r = lastChild();
while (r) {
RenderObject* n = 0;
n = r->lastChild();
if (!n)
break;
r = n;
}
return r;
}
static void addLayers(RenderObject* obj, RenderLayer* parentLayer, RenderObject*& newObject,
RenderLayer*& beforeChild)
{
if (obj->hasLayer()) {
if (!beforeChild && newObject) {
beforeChild = newObject->parent()->findNextLayer(parentLayer, newObject);
newObject = 0;
}
parentLayer->addChild(toRenderBoxModelObject(obj)->layer(), beforeChild);
return;
}
for (RenderObject* curr = obj->firstChild(); curr; curr = curr->nextSibling())
addLayers(curr, parentLayer, newObject, beforeChild);
}
void RenderObject::addLayers(RenderLayer* parentLayer)
{
if (!parentLayer)
return;
RenderObject* object = this;
RenderLayer* beforeChild = 0;
WebCore::addLayers(this, parentLayer, object, beforeChild);
}
void RenderObject::removeLayers(RenderLayer* parentLayer)
{
if (!parentLayer)
return;
if (hasLayer()) {
parentLayer->removeChild(toRenderBoxModelObject(this)->layer());
return;
}
for (RenderObject* curr = firstChild(); curr; curr = curr->nextSibling())
curr->removeLayers(parentLayer);
}
void RenderObject::moveLayers(RenderLayer* oldParent, RenderLayer* newParent)
{
if (!newParent)
return;
if (hasLayer()) {
RenderLayer* layer = toRenderBoxModelObject(this)->layer();
ASSERT(oldParent == layer->parent());
if (oldParent)
oldParent->removeChild(layer);
newParent->addChild(layer);
return;
}
for (RenderObject* curr = firstChild(); curr; curr = curr->nextSibling())
curr->moveLayers(oldParent, newParent);
}
RenderLayer* RenderObject::findNextLayer(RenderLayer* parentLayer, RenderObject* startPoint,
bool checkParent)
{
if (!parentLayer)
return 0;
RenderLayer* ourLayer = hasLayer() ? toRenderBoxModelObject(this)->layer() : 0;
if (ourLayer && ourLayer->parent() == parentLayer)
return ourLayer;
if (!ourLayer || ourLayer == parentLayer) {
for (RenderObject* curr = startPoint ? startPoint->nextSibling() : firstChild();
curr; curr = curr->nextSibling()) {
RenderLayer* nextLayer = curr->findNextLayer(parentLayer, 0, false);
if (nextLayer)
return nextLayer;
}
}
if (parentLayer == ourLayer)
return 0;
if (checkParent && parent())
return parent()->findNextLayer(parentLayer, this, true);
return 0;
}
RenderLayer* RenderObject::enclosingLayer() const
{
const RenderObject* curr = this;
while (curr) {
RenderLayer* layer = curr->hasLayer() ? toRenderBoxModelObject(curr)->layer() : 0;
if (layer)
return layer;
curr = curr->parent();
}
return 0;
}
bool RenderObject::scrollRectToVisible(const LayoutRect& rect, const ScrollAlignment& alignX, const ScrollAlignment& alignY)
{
RenderLayer* enclosingLayer = this->enclosingLayer();
if (!enclosingLayer)
return false;
enclosingLayer->scrollRectToVisible(rect, alignX, alignY);
return true;
}
RenderBox* RenderObject::enclosingBox() const
{
RenderObject* curr = const_cast<RenderObject*>(this);
while (curr) {
if (curr->isBox())
return toRenderBox(curr);
curr = curr->parent();
}
ASSERT_NOT_REACHED();
return 0;
}
RenderBoxModelObject* RenderObject::enclosingBoxModelObject() const
{
RenderObject* curr = const_cast<RenderObject*>(this);
while (curr) {
if (curr->isBoxModelObject())
return toRenderBoxModelObject(curr);
curr = curr->parent();
}
ASSERT_NOT_REACHED();
return 0;
}
RenderFlowThread* RenderObject::enclosingRenderFlowThread() const
{
if (!inRenderFlowThread())
return 0;
RenderFlowThread* flowThread = view()->flowThreadController()->currentRenderFlowThread();
if (flowThread)
return flowThread;
RenderObject* curr = const_cast<RenderObject*>(this);
while (curr) {
if (curr->isRenderFlowThread())
return toRenderFlowThread(curr);
curr = curr->parent();
}
return 0;
}
RenderNamedFlowThread* RenderObject::enclosingRenderNamedFlowThread() const
{
RenderObject* object = const_cast<RenderObject*>(this);
while (object && object->isAnonymousBlock() && !object->isRenderNamedFlowThread())
object = object->parent();
return object && object->isRenderNamedFlowThread() ? toRenderNamedFlowThread(object) : 0;
}
RenderBlock* RenderObject::firstLineBlock() const
{
return 0;
}
static inline bool objectIsRelayoutBoundary(const RenderObject* object)
{
if (object->isTextControl())
return true;
#if ENABLE(SVG)
if (object->isSVGRoot())
return true;
#endif
if (!object->hasOverflowClip())
return false;
if (object->style()->width().isIntrinsicOrAuto() || object->style()->height().isIntrinsicOrAuto() || object->style()->height().isPercent())
return false;
if (object->isTablePart())
return false;
return true;
}
void RenderObject::markContainingBlocksForLayout(bool scheduleRelayout, RenderObject* newRoot)
{
ASSERT(!scheduleRelayout || !newRoot);
RenderObject* object = container();
RenderObject* last = this;
bool simplifiedNormalFlowLayout = needsSimplifiedNormalFlowLayout() && !selfNeedsLayout() && !normalChildNeedsLayout();
while (object) {
RenderObject* container = object->container();
if (!container && !object->isRenderView())
return;
if (!last->isText() && last->style()->isPositioned()) {
bool willSkipRelativelyPositionedInlines = !object->isRenderBlock() || object->isAnonymousBlock();
while (object && (!object->isRenderBlock() || object->isAnonymousBlock()))
object = object->container();
if (!object || object->posChildNeedsLayout())
return;
if (willSkipRelativelyPositionedInlines)
container = object->container();
object->setPosChildNeedsLayout(true);
simplifiedNormalFlowLayout = true;
ASSERT(!object->isSetNeedsLayoutForbidden());
} else if (simplifiedNormalFlowLayout) {
if (object->needsSimplifiedNormalFlowLayout())
return;
object->setNeedsSimplifiedNormalFlowLayout(true);
ASSERT(!object->isSetNeedsLayoutForbidden());
} else {
if (object->normalChildNeedsLayout())
return;
object->setNormalChildNeedsLayout(true);
ASSERT(!object->isSetNeedsLayoutForbidden());
}
if (object == newRoot)
return;
last = object;
if (scheduleRelayout && objectIsRelayoutBoundary(last))
break;
object = container;
}
if (scheduleRelayout)
last->scheduleRelayout();
}
void RenderObject::setPreferredLogicalWidthsDirty(bool shouldBeDirty, MarkingBehavior markParents)
{
bool alreadyDirty = preferredLogicalWidthsDirty();
m_bitfields.setPreferredLogicalWidthsDirty(shouldBeDirty);
if (shouldBeDirty && !alreadyDirty && markParents == MarkContainingBlockChain && (isText() || !style()->isPositioned()))
invalidateContainerPreferredLogicalWidths();
}
void RenderObject::invalidateContainerPreferredLogicalWidths()
{
RenderObject* o = isTableCell() ? containingBlock() : container();
while (o && !o->preferredLogicalWidthsDirty()) {
RenderObject* container = o->isTableCell() ? o->containingBlock() : o->container();
if (!container && !o->isRenderView())
break;
o->m_bitfields.setPreferredLogicalWidthsDirty(true);
if (o->style()->isPositioned())
break;
o = container;
}
}
void RenderObject::setLayerNeedsFullRepaint()
{
ASSERT(hasLayer());
toRenderBoxModelObject(this)->layer()->setRepaintStatus(NeedsFullRepaint);
}
void RenderObject::setLayerNeedsFullRepaintForPositionedMovementLayout()
{
ASSERT(hasLayer());
toRenderBoxModelObject(this)->layer()->setRepaintStatus(NeedsFullRepaintForPositionedMovementLayout);
}
RenderBlock* RenderObject::containingBlock() const
{
RenderObject* o = parent();
if (!o && isRenderScrollbarPart())
o = toRenderScrollbarPart(this)->rendererOwningScrollbar();
if (!isText() && m_style->position() == FixedPosition) {
while (o) {
if (o->isRenderView())
break;
if (o->hasTransform() && o->isRenderBlock())
break;
#if ENABLE(SVG)
if (o->isSVGForeignObject())
break;
#endif
o = o->parent();
}
ASSERT(!o->isAnonymousBlock());
} else if (!isText() && m_style->position() == AbsolutePosition) {
while (o) {
if (!o->style()->position() == StaticPosition && !(o->isInline() && !o->isReplaced()))
break;
if (o->isRenderView())
break;
if (o->hasTransform() && o->isRenderBlock())
break;
if (o->style()->position() == RelativePosition && o->isInline() && !o->isReplaced()) {
o = o->containingBlock();
break;
}
#if ENABLE(SVG)
if (o->isSVGForeignObject()) break;
#endif
o = o->parent();
}
while (o && o->isAnonymousBlock())
o = o->containingBlock();
} else {
while (o && ((o->isInline() && !o->isReplaced()) || !o->isRenderBlock()))
o = o->parent();
}
if (!o || !o->isRenderBlock())
return 0;
return toRenderBlock(o);
}
static bool mustRepaintFillLayers(const RenderObject* renderer, const FillLayer* layer)
{
if (layer->next())
return true;
StyleImage* img = layer->image();
if (!img || !img->canRender(renderer, renderer->style()->effectiveZoom()))
return false;
if (!layer->xPosition().isZero() || !layer->yPosition().isZero())
return true;
if (layer->size().type == SizeLength) {
if (layer->size().size.width().isPercent() || layer->size().size.height().isPercent())
return true;
} else if (layer->size().type == Contain || layer->size().type == Cover || img->usesImageContainerSize())
return true;
return false;
}
bool RenderObject::borderImageIsLoadedAndCanBeRendered() const
{
ASSERT(style()->hasBorder());
StyleImage* borderImage = style()->borderImage().image();
return borderImage && borderImage->canRender(this, style()->effectiveZoom()) && borderImage->isLoaded();
}
bool RenderObject::mustRepaintBackgroundOrBorder() const
{
if (hasMask() && mustRepaintFillLayers(this, style()->maskLayers()))
return true;
if (!hasBoxDecorations())
return false;
if (mustRepaintFillLayers(this, style()->backgroundLayers()))
return true;
if (style()->hasBorder() && borderImageIsLoadedAndCanBeRendered())
return true;
return false;
}
void RenderObject::drawLineForBoxSide(GraphicsContext* graphicsContext, int x1, int y1, int x2, int y2,
BoxSide side, Color color, EBorderStyle style,
int adjacentWidth1, int adjacentWidth2, bool antialias)
{
int width = (side == BSTop || side == BSBottom ? y2 - y1 : x2 - x1);
if (style == DOUBLE && width < 3)
style = SOLID;
switch (style) {
case BNONE:
case BHIDDEN:
return;
case DOTTED:
case DASHED: {
graphicsContext->setStrokeColor(color, m_style->colorSpace());
graphicsContext->setStrokeThickness(width);
StrokeStyle oldStrokeStyle = graphicsContext->strokeStyle();
graphicsContext->setStrokeStyle(style == DASHED ? DashedStroke : DottedStroke);
if (width > 0) {
bool wasAntialiased = graphicsContext->shouldAntialias();
graphicsContext->setShouldAntialias(antialias);
switch (side) {
case BSBottom:
case BSTop:
graphicsContext->drawLine(IntPoint(x1, (y1 + y2) / 2), IntPoint(x2, (y1 + y2) / 2));
break;
case BSRight:
case BSLeft:
graphicsContext->drawLine(IntPoint((x1 + x2) / 2, y1), IntPoint((x1 + x2) / 2, y2));
break;
}
graphicsContext->setShouldAntialias(wasAntialiased);
graphicsContext->setStrokeStyle(oldStrokeStyle);
}
break;
}
case DOUBLE: {
int third = (width + 1) / 3;
if (adjacentWidth1 == 0 && adjacentWidth2 == 0) {
StrokeStyle oldStrokeStyle = graphicsContext->strokeStyle();
graphicsContext->setStrokeStyle(NoStroke);
graphicsContext->setFillColor(color, m_style->colorSpace());
bool wasAntialiased = graphicsContext->shouldAntialias();
graphicsContext->setShouldAntialias(antialias);
switch (side) {
case BSTop:
case BSBottom:
graphicsContext->drawRect(IntRect(x1, y1, x2 - x1, third));
graphicsContext->drawRect(IntRect(x1, y2 - third, x2 - x1, third));
break;
case BSLeft:
graphicsContext->drawRect(IntRect(x1, y1 + 1, third, y2 - y1 - 1));
graphicsContext->drawRect(IntRect(x2 - third, y1 + 1, third, y2 - y1 - 1));
break;
case BSRight:
graphicsContext->drawRect(IntRect(x1, y1 + 1, third, y2 - y1 - 1));
graphicsContext->drawRect(IntRect(x2 - third, y1 + 1, third, y2 - y1 - 1));
break;
}
graphicsContext->setShouldAntialias(wasAntialiased);
graphicsContext->setStrokeStyle(oldStrokeStyle);
} else {
int adjacent1BigThird = ((adjacentWidth1 > 0) ? adjacentWidth1 + 1 : adjacentWidth1 - 1) / 3;
int adjacent2BigThird = ((adjacentWidth2 > 0) ? adjacentWidth2 + 1 : adjacentWidth2 - 1) / 3;
switch (side) {
case BSTop:
drawLineForBoxSide(graphicsContext, x1 + max((-adjacentWidth1 * 2 + 1) / 3, 0),
y1, x2 - max((-adjacentWidth2 * 2 + 1) / 3, 0), y1 + third,
side, color, SOLID, adjacent1BigThird, adjacent2BigThird, antialias);
drawLineForBoxSide(graphicsContext, x1 + max((adjacentWidth1 * 2 + 1) / 3, 0),
y2 - third, x2 - max((adjacentWidth2 * 2 + 1) / 3, 0), y2,
side, color, SOLID, adjacent1BigThird, adjacent2BigThird, antialias);
break;
case BSLeft:
drawLineForBoxSide(graphicsContext, x1, y1 + max((-adjacentWidth1 * 2 + 1) / 3, 0),
x1 + third, y2 - max((-adjacentWidth2 * 2 + 1) / 3, 0),
side, color, SOLID, adjacent1BigThird, adjacent2BigThird, antialias);
drawLineForBoxSide(graphicsContext, x2 - third, y1 + max((adjacentWidth1 * 2 + 1) / 3, 0),
x2, y2 - max((adjacentWidth2 * 2 + 1) / 3, 0),
side, color, SOLID, adjacent1BigThird, adjacent2BigThird, antialias);
break;
case BSBottom:
drawLineForBoxSide(graphicsContext, x1 + max((adjacentWidth1 * 2 + 1) / 3, 0),
y1, x2 - max((adjacentWidth2 * 2 + 1) / 3, 0), y1 + third,
side, color, SOLID, adjacent1BigThird, adjacent2BigThird, antialias);
drawLineForBoxSide(graphicsContext, x1 + max((-adjacentWidth1 * 2 + 1) / 3, 0),
y2 - third, x2 - max((-adjacentWidth2 * 2 + 1) / 3, 0), y2,
side, color, SOLID, adjacent1BigThird, adjacent2BigThird, antialias);
break;
case BSRight:
drawLineForBoxSide(graphicsContext, x1, y1 + max((adjacentWidth1 * 2 + 1) / 3, 0),
x1 + third, y2 - max((adjacentWidth2 * 2 + 1) / 3, 0),
side, color, SOLID, adjacent1BigThird, adjacent2BigThird, antialias);
drawLineForBoxSide(graphicsContext, x2 - third, y1 + max((-adjacentWidth1 * 2 + 1) / 3, 0),
x2, y2 - max((-adjacentWidth2 * 2 + 1) / 3, 0),
side, color, SOLID, adjacent1BigThird, adjacent2BigThird, antialias);
break;
default:
break;
}
}
break;
}
case RIDGE:
case GROOVE: {
EBorderStyle s1;
EBorderStyle s2;
if (style == GROOVE) {
s1 = INSET;
s2 = OUTSET;
} else {
s1 = OUTSET;
s2 = INSET;
}
int adjacent1BigHalf = ((adjacentWidth1 > 0) ? adjacentWidth1 + 1 : adjacentWidth1 - 1) / 2;
int adjacent2BigHalf = ((adjacentWidth2 > 0) ? adjacentWidth2 + 1 : adjacentWidth2 - 1) / 2;
switch (side) {
case BSTop:
drawLineForBoxSide(graphicsContext, x1 + max(-adjacentWidth1, 0) / 2, y1, x2 - max(-adjacentWidth2, 0) / 2, (y1 + y2 + 1) / 2,
side, color, s1, adjacent1BigHalf, adjacent2BigHalf, antialias);
drawLineForBoxSide(graphicsContext, x1 + max(adjacentWidth1 + 1, 0) / 2, (y1 + y2 + 1) / 2, x2 - max(adjacentWidth2 + 1, 0) / 2, y2,
side, color, s2, adjacentWidth1 / 2, adjacentWidth2 / 2, antialias);
break;
case BSLeft:
drawLineForBoxSide(graphicsContext, x1, y1 + max(-adjacentWidth1, 0) / 2, (x1 + x2 + 1) / 2, y2 - max(-adjacentWidth2, 0) / 2,
side, color, s1, adjacent1BigHalf, adjacent2BigHalf, antialias);
drawLineForBoxSide(graphicsContext, (x1 + x2 + 1) / 2, y1 + max(adjacentWidth1 + 1, 0) / 2, x2, y2 - max(adjacentWidth2 + 1, 0) / 2,
side, color, s2, adjacentWidth1 / 2, adjacentWidth2 / 2, antialias);
break;
case BSBottom:
drawLineForBoxSide(graphicsContext, x1 + max(adjacentWidth1, 0) / 2, y1, x2 - max(adjacentWidth2, 0) / 2, (y1 + y2 + 1) / 2,
side, color, s2, adjacent1BigHalf, adjacent2BigHalf, antialias);
drawLineForBoxSide(graphicsContext, x1 + max(-adjacentWidth1 + 1, 0) / 2, (y1 + y2 + 1) / 2, x2 - max(-adjacentWidth2 + 1, 0) / 2, y2,
side, color, s1, adjacentWidth1 / 2, adjacentWidth2 / 2, antialias);
break;
case BSRight:
drawLineForBoxSide(graphicsContext, x1, y1 + max(adjacentWidth1, 0) / 2, (x1 + x2 + 1) / 2, y2 - max(adjacentWidth2, 0) / 2,
side, color, s2, adjacent1BigHalf, adjacent2BigHalf, antialias);
drawLineForBoxSide(graphicsContext, (x1 + x2 + 1) / 2, y1 + max(-adjacentWidth1 + 1, 0) / 2, x2, y2 - max(-adjacentWidth2 + 1, 0) / 2,
side, color, s1, adjacentWidth1 / 2, adjacentWidth2 / 2, antialias);
break;
}
break;
}
case INSET:
if (side == BSTop || side == BSLeft)
color = color.dark();
case OUTSET:
if (style == OUTSET && (side == BSBottom || side == BSRight))
color = color.dark();
case SOLID: {
StrokeStyle oldStrokeStyle = graphicsContext->strokeStyle();
graphicsContext->setStrokeStyle(NoStroke);
graphicsContext->setFillColor(color, m_style->colorSpace());
ASSERT(x2 >= x1);
ASSERT(y2 >= y1);
if (!adjacentWidth1 && !adjacentWidth2) {
bool wasAntialiased = graphicsContext->shouldAntialias();
graphicsContext->setShouldAntialias(antialias);
graphicsContext->drawRect(IntRect(x1, y1, x2 - x1, y2 - y1));
graphicsContext->setShouldAntialias(wasAntialiased);
graphicsContext->setStrokeStyle(oldStrokeStyle);
return;
}
FloatPoint quad[4];
switch (side) {
case BSTop:
quad[0] = FloatPoint(x1 + max(-adjacentWidth1, 0), y1);
quad[1] = FloatPoint(x1 + max(adjacentWidth1, 0), y2);
quad[2] = FloatPoint(x2 - max(adjacentWidth2, 0), y2);
quad[3] = FloatPoint(x2 - max(-adjacentWidth2, 0), y1);
break;
case BSBottom:
quad[0] = FloatPoint(x1 + max(adjacentWidth1, 0), y1);
quad[1] = FloatPoint(x1 + max(-adjacentWidth1, 0), y2);
quad[2] = FloatPoint(x2 - max(-adjacentWidth2, 0), y2);
quad[3] = FloatPoint(x2 - max(adjacentWidth2, 0), y1);
break;
case BSLeft:
quad[0] = FloatPoint(x1, y1 + max(-adjacentWidth1, 0));
quad[1] = FloatPoint(x1, y2 - max(-adjacentWidth2, 0));
quad[2] = FloatPoint(x2, y2 - max(adjacentWidth2, 0));
quad[3] = FloatPoint(x2, y1 + max(adjacentWidth1, 0));
break;
case BSRight:
quad[0] = FloatPoint(x1, y1 + max(adjacentWidth1, 0));
quad[1] = FloatPoint(x1, y2 - max(adjacentWidth2, 0));
quad[2] = FloatPoint(x2, y2 - max(-adjacentWidth2, 0));
quad[3] = FloatPoint(x2, y1 + max(-adjacentWidth1, 0));
break;
}
graphicsContext->drawConvexPolygon(4, quad, antialias);
graphicsContext->setStrokeStyle(oldStrokeStyle);
break;
}
}
}
#if !HAVE(PATH_BASED_BORDER_RADIUS_DRAWING)
void RenderObject::drawArcForBoxSide(GraphicsContext* graphicsContext, int x, int y, float thickness, const IntSize& radius,
int angleStart, int angleSpan, BoxSide s, Color color,
EBorderStyle style, bool firstCorner)
{
if ((style == DOUBLE && thickness / 2 < 3) || ((style == RIDGE || style == GROOVE) && thickness / 2 < 2))
style = SOLID;
switch (style) {
case BNONE:
case BHIDDEN:
return;
case DOTTED:
case DASHED:
graphicsContext->setStrokeColor(color, m_style->colorSpace());
graphicsContext->setStrokeStyle(style == DOTTED ? DottedStroke : DashedStroke);
graphicsContext->setStrokeThickness(thickness);
graphicsContext->strokeArc(IntRect(x, y, radius.width() * 2, radius.height() * 2), angleStart, angleSpan);
break;
case DOUBLE: {
float third = thickness / 3.0f;
float innerThird = (thickness + 1.0f) / 6.0f;
int shiftForInner = static_cast<int>(innerThird * 2.5f);
int outerY = y;
int outerHeight = radius.height() * 2;
int innerX = x + shiftForInner;
int innerY = y + shiftForInner;
int innerWidth = (radius.width() - shiftForInner) * 2;
int innerHeight = (radius.height() - shiftForInner) * 2;
if (innerThird > 1 && (s == BSTop || (firstCorner && (s == BSLeft || s == BSRight)))) {
outerHeight += 2;
innerHeight += 2;
}
graphicsContext->setStrokeStyle(SolidStroke);
graphicsContext->setStrokeColor(color, m_style->colorSpace());
graphicsContext->setStrokeThickness(third);
graphicsContext->strokeArc(IntRect(x, outerY, radius.width() * 2, outerHeight), angleStart, angleSpan);
graphicsContext->setStrokeThickness(innerThird > 2 ? innerThird - 1 : innerThird);
graphicsContext->strokeArc(IntRect(innerX, innerY, innerWidth, innerHeight), angleStart, angleSpan);
break;
}
case GROOVE:
case RIDGE: {
Color c2;
if ((style == RIDGE && (s == BSTop || s == BSLeft)) ||
(style == GROOVE && (s == BSBottom || s == BSRight)))
c2 = color.dark();
else {
c2 = color;
color = color.dark();
}
graphicsContext->setStrokeStyle(SolidStroke);
graphicsContext->setStrokeColor(color, m_style->colorSpace());
graphicsContext->setStrokeThickness(thickness);
graphicsContext->strokeArc(IntRect(x, y, radius.width() * 2, radius.height() * 2), angleStart, angleSpan);
float halfThickness = (thickness + 1.0f) / 4.0f;
int shiftForInner = static_cast<int>(halfThickness * 1.5f);
graphicsContext->setStrokeColor(c2, m_style->colorSpace());
graphicsContext->setStrokeThickness(halfThickness > 2 ? halfThickness - 1 : halfThickness);
graphicsContext->strokeArc(IntRect(x + shiftForInner, y + shiftForInner, (radius.width() - shiftForInner) * 2,
(radius.height() - shiftForInner) * 2), angleStart, angleSpan);
break;
}
case INSET:
if (s == BSTop || s == BSLeft)
color = color.dark();
case OUTSET:
if (style == OUTSET && (s == BSBottom || s == BSRight))
color = color.dark();
case SOLID:
graphicsContext->setStrokeStyle(SolidStroke);
graphicsContext->setStrokeColor(color, m_style->colorSpace());
graphicsContext->setStrokeThickness(thickness);
graphicsContext->strokeArc(IntRect(x, y, radius.width() * 2, radius.height() * 2), angleStart, angleSpan);
break;
}
}
#endif
void RenderObject::paintFocusRing(GraphicsContext* context, const LayoutPoint& paintOffset, RenderStyle* style)
{
Vector<IntRect> focusRingRects;
addFocusRingRects(focusRingRects, paintOffset);
if (style->outlineStyleIsAuto())
context->drawFocusRing(focusRingRects, style->outlineWidth(), style->outlineOffset(), style->visitedDependentColor(CSSPropertyOutlineColor));
else
addPDFURLRect(context, unionRect(focusRingRects));
}
void RenderObject::addPDFURLRect(GraphicsContext* context, const LayoutRect& rect)
{
if (rect.isEmpty())
return;
Node* n = node();
if (!n || !n->isLink() || !n->isElementNode())
return;
const AtomicString& href = static_cast<Element*>(n)->getAttribute(hrefAttr);
if (href.isNull())
return;
context->setURLForRect(n->document()->completeURL(href), pixelSnappedIntRect(rect));
}
void RenderObject::paintOutline(GraphicsContext* graphicsContext, const LayoutRect& paintRect)
{
if (!hasOutline())
return;
RenderStyle* styleToUse = style();
LayoutUnit outlineWidth = styleToUse->outlineWidth();
EBorderStyle outlineStyle = styleToUse->outlineStyle();
Color outlineColor = styleToUse->visitedDependentColor(CSSPropertyOutlineColor);
int outlineOffset = styleToUse->outlineOffset();
if (styleToUse->outlineStyleIsAuto() || hasOutlineAnnotation()) {
if (!theme()->supportsFocusRing(styleToUse)) {
paintFocusRing(graphicsContext, paintRect.location(), styleToUse);
}
}
if (styleToUse->outlineStyleIsAuto() || styleToUse->outlineStyle() == BNONE)
return;
IntRect inner = pixelSnappedIntRect(paintRect);
inner.inflate(outlineOffset);
IntRect outer = pixelSnappedIntRect(inner);
outer.inflate(outlineWidth);
if (outer.isEmpty())
return;
bool useTransparencyLayer = outlineColor.hasAlpha();
if (useTransparencyLayer) {
if (outlineStyle == SOLID) {
Path path;
path.addRect(outer);
path.addRect(inner);
graphicsContext->setFillRule(RULE_EVENODD);
graphicsContext->setFillColor(outlineColor, styleToUse->colorSpace());
graphicsContext->fillPath(path);
return;
}
graphicsContext->beginTransparencyLayer(static_cast<float>(outlineColor.alpha()) / 255);
outlineColor = Color(outlineColor.red(), outlineColor.green(), outlineColor.blue());
}
int leftOuter = outer.x();
int leftInner = inner.x();
int rightOuter = outer.maxX();
int rightInner = inner.maxX();
int topOuter = outer.y();
int topInner = inner.y();
int bottomOuter = outer.maxY();
int bottomInner = inner.maxY();
drawLineForBoxSide(graphicsContext, leftOuter, topOuter, leftInner, bottomOuter, BSLeft, outlineColor, outlineStyle, outlineWidth, outlineWidth);
drawLineForBoxSide(graphicsContext, leftOuter, topOuter, rightOuter, topInner, BSTop, outlineColor, outlineStyle, outlineWidth, outlineWidth);
drawLineForBoxSide(graphicsContext, rightInner, topOuter, rightOuter, bottomOuter, BSRight, outlineColor, outlineStyle, outlineWidth, outlineWidth);
drawLineForBoxSide(graphicsContext, leftOuter, bottomInner, rightOuter, bottomOuter, BSBottom, outlineColor, outlineStyle, outlineWidth, outlineWidth);
if (useTransparencyLayer)
graphicsContext->endTransparencyLayer();
}
IntRect RenderObject::absoluteBoundingBoxRect(bool useTransforms) const
{
if (useTransforms) {
Vector<FloatQuad> quads;
absoluteQuads(quads);
size_t n = quads.size();
if (!n)
return IntRect();
IntRect result = quads[0].enclosingBoundingBox();
for (size_t i = 1; i < n; ++i)
result.unite(quads[i].enclosingBoundingBox());
return result;
}
FloatPoint absPos = localToAbsolute();
Vector<IntRect> rects;
absoluteRects(rects, flooredLayoutPoint(absPos));
size_t n = rects.size();
if (!n)
return IntRect();
LayoutRect result = rects[0];
for (size_t i = 1; i < n; ++i)
result.unite(rects[i]);
return pixelSnappedIntRect(result);
}
void RenderObject::absoluteFocusRingQuads(Vector<FloatQuad>& quads)
{
Vector<IntRect> rects;
FloatPoint absolutePoint = localToAbsolute();
addFocusRingRects(rects, flooredLayoutPoint(absolutePoint));
size_t count = rects.size();
for (size_t i = 0; i < count; ++i) {
IntRect rect = rects[i];
rect.move(-absolutePoint.x(), -absolutePoint.y());
quads.append(localToAbsoluteQuad(FloatQuad(rect)));
}
}
void RenderObject::addAbsoluteRectForLayer(LayoutRect& result)
{
if (hasLayer())
result.unite(absoluteBoundingBoxRectIgnoringTransforms());
for (RenderObject* current = firstChild(); current; current = current->nextSibling())
current->addAbsoluteRectForLayer(result);
}
LayoutRect RenderObject::paintingRootRect(LayoutRect& topLevelRect)
{
LayoutRect result = absoluteBoundingBoxRectIgnoringTransforms();
topLevelRect = result;
for (RenderObject* current = firstChild(); current; current = current->nextSibling())
current->addAbsoluteRectForLayer(result);
return result;
}
void RenderObject::paint(PaintInfo&, const LayoutPoint&)
{
}
RenderBoxModelObject* RenderObject::containerForRepaint() const
{
RenderView* v = view();
if (!v)
return 0;
RenderBoxModelObject* repaintContainer = 0;
#if USE(ACCELERATED_COMPOSITING)
if (v->usesCompositing()) {
RenderLayer* compLayer = enclosingLayer()->enclosingCompositingLayer();
if (compLayer)
repaintContainer = compLayer->renderer();
}
#endif
#if ENABLE(CSS_FILTERS)
if (RenderLayer* parentLayer = enclosingLayer()) {
RenderLayer* enclosingFilterLayer = parentLayer->enclosingFilterLayer();
if (enclosingFilterLayer)
return enclosingFilterLayer->renderer();
}
#endif
if (!repaintContainer && inRenderFlowThread())
repaintContainer = enclosingRenderFlowThread();
return repaintContainer;
}
void RenderObject::repaintUsingContainer(RenderBoxModelObject* repaintContainer, const LayoutRect& r, bool immediate)
{
if (!repaintContainer) {
view()->repaintViewRectangle(r, immediate);
return;
}
if (repaintContainer->isRenderFlowThread()) {
toRenderFlowThread(repaintContainer)->repaintRectangleInRegions(r, immediate);
return;
}
#if ENABLE(CSS_FILTERS)
if (repaintContainer->hasFilter() && repaintContainer->layer() && repaintContainer->layer()->requiresFullLayerImageForFilters()) {
repaintContainer->layer()->setFilterBackendNeedsRepaintingInRect(r, immediate);
return;
}
#endif
#if USE(ACCELERATED_COMPOSITING)
RenderView* v = view();
if (repaintContainer->isRenderView()) {
ASSERT(repaintContainer == v);
bool viewHasCompositedLayer = v->hasLayer() && v->layer()->isComposited();
if (!viewHasCompositedLayer || v->layer()->backing()->paintsIntoWindow()) {
LayoutRect repaintRectangle = r;
if (viewHasCompositedLayer && v->layer()->transform())
repaintRectangle = v->layer()->transform()->mapRect(r);
v->repaintViewRectangle(repaintRectangle, immediate);
return;
}
}
if (v->usesCompositing()) {
ASSERT(repaintContainer->hasLayer() && repaintContainer->layer()->isComposited());
repaintContainer->layer()->setBackingNeedsRepaintInRect(r);
}
#else
if (repaintContainer->isRenderView())
toRenderView(repaintContainer)->repaintViewRectangle(r, immediate);
#endif
}
void RenderObject::repaint(bool immediate)
{
RenderView* view;
if (!isRooted(&view))
return;
if (view->printing())
return;
RenderBoxModelObject* repaintContainer = containerForRepaint();
repaintUsingContainer(repaintContainer ? repaintContainer : view, clippedOverflowRectForRepaint(repaintContainer), immediate);
}
void RenderObject::repaintRectangle(const LayoutRect& r, bool immediate)
{
RenderView* view;
if (!isRooted(&view))
return;
if (view->printing())
return;
LayoutRect dirtyRect(r);
dirtyRect.move(view->layoutDelta());
RenderBoxModelObject* repaintContainer = containerForRepaint();
computeRectForRepaint(repaintContainer, dirtyRect);
repaintUsingContainer(repaintContainer ? repaintContainer : view, dirtyRect, immediate);
}
IntRect RenderObject::pixelSnappedAbsoluteClippedOverflowRect() const
{
return pixelSnappedIntRect(absoluteClippedOverflowRect());
}
bool RenderObject::repaintAfterLayoutIfNeeded(RenderBoxModelObject* repaintContainer, const LayoutRect& oldBounds, const LayoutRect& oldOutlineBox, const LayoutRect* newBoundsPtr, const LayoutRect* newOutlineBoxRectPtr)
{
RenderView* v = view();
if (v->printing())
return false;
LayoutRect newBounds = newBoundsPtr ? *newBoundsPtr : clippedOverflowRectForRepaint(repaintContainer);
LayoutRect newOutlineBox;
bool fullRepaint = selfNeedsLayout();
if (!fullRepaint && style()->borderFit() == BorderFitLines)
fullRepaint = true;
if (!fullRepaint) {
newOutlineBox = newOutlineBoxRectPtr ? *newOutlineBoxRectPtr : outlineBoundsForRepaint(repaintContainer);
if (newOutlineBox.location() != oldOutlineBox.location() || (mustRepaintBackgroundOrBorder() && (newBounds != oldBounds || newOutlineBox != oldOutlineBox)))
fullRepaint = true;
}
if (!repaintContainer)
repaintContainer = v;
if (fullRepaint) {
repaintUsingContainer(repaintContainer, oldBounds);
if (newBounds != oldBounds)
repaintUsingContainer(repaintContainer, newBounds);
return true;
}
if (newBounds == oldBounds && newOutlineBox == oldOutlineBox)
return false;
LayoutUnit deltaLeft = newBounds.x() - oldBounds.x();
if (deltaLeft > 0)
repaintUsingContainer(repaintContainer, LayoutRect(oldBounds.x(), oldBounds.y(), deltaLeft, oldBounds.height()));
else if (deltaLeft < 0)
repaintUsingContainer(repaintContainer, LayoutRect(newBounds.x(), newBounds.y(), -deltaLeft, newBounds.height()));
LayoutUnit deltaRight = newBounds.maxX() - oldBounds.maxX();
if (deltaRight > 0)
repaintUsingContainer(repaintContainer, LayoutRect(oldBounds.maxX(), newBounds.y(), deltaRight, newBounds.height()));
else if (deltaRight < 0)
repaintUsingContainer(repaintContainer, LayoutRect(newBounds.maxX(), oldBounds.y(), -deltaRight, oldBounds.height()));
LayoutUnit deltaTop = newBounds.y() - oldBounds.y();
if (deltaTop > 0)
repaintUsingContainer(repaintContainer, LayoutRect(oldBounds.x(), oldBounds.y(), oldBounds.width(), deltaTop));
else if (deltaTop < 0)
repaintUsingContainer(repaintContainer, LayoutRect(newBounds.x(), newBounds.y(), newBounds.width(), -deltaTop));
LayoutUnit deltaBottom = newBounds.maxY() - oldBounds.maxY();
if (deltaBottom > 0)
repaintUsingContainer(repaintContainer, LayoutRect(newBounds.x(), oldBounds.maxY(), newBounds.width(), deltaBottom));
else if (deltaBottom < 0)
repaintUsingContainer(repaintContainer, LayoutRect(oldBounds.x(), newBounds.maxY(), oldBounds.width(), -deltaBottom));
if (newOutlineBox == oldOutlineBox)
return false;
RenderStyle* outlineStyle = outlineStyleForRepaint();
LayoutUnit ow = outlineStyle->outlineSize();
LayoutUnit width = absoluteValue(newOutlineBox.width() - oldOutlineBox.width());
if (width) {
LayoutUnit shadowLeft;
LayoutUnit shadowRight;
style()->getBoxShadowHorizontalExtent(shadowLeft, shadowRight);
int borderRight = isBox() ? toRenderBox(this)->borderRight() : 0;
LayoutUnit boxWidth = isBox() ? toRenderBox(this)->width() : ZERO_LAYOUT_UNIT;
LayoutUnit borderWidth = max<LayoutUnit>(-outlineStyle->outlineOffset(), max<LayoutUnit>(borderRight, max<LayoutUnit>(valueForLength(style()->borderTopRightRadius().width(), boxWidth, v), valueForLength(style()->borderBottomRightRadius().width(), boxWidth, v)))) + max<LayoutUnit>(ow, shadowRight);
LayoutRect rightRect(newOutlineBox.x() + min(newOutlineBox.width(), oldOutlineBox.width()) - borderWidth,
newOutlineBox.y(),
width + borderWidth,
max(newOutlineBox.height(), oldOutlineBox.height()));
LayoutUnit right = min<LayoutUnit>(newBounds.maxX(), oldBounds.maxX());
if (rightRect.x() < right) {
rightRect.setWidth(min(rightRect.width(), right - rightRect.x()));
repaintUsingContainer(repaintContainer, rightRect);
}
}
LayoutUnit height = absoluteValue(newOutlineBox.height() - oldOutlineBox.height());
if (height) {
LayoutUnit shadowTop;
LayoutUnit shadowBottom;
style()->getBoxShadowVerticalExtent(shadowTop, shadowBottom);
int borderBottom = isBox() ? toRenderBox(this)->borderBottom() : 0;
LayoutUnit boxHeight = isBox() ? toRenderBox(this)->height() : ZERO_LAYOUT_UNIT;
LayoutUnit borderHeight = max<LayoutUnit>(-outlineStyle->outlineOffset(), max<LayoutUnit>(borderBottom, max<LayoutUnit>(valueForLength(style()->borderBottomLeftRadius().height(), boxHeight, v), valueForLength(style()->borderBottomRightRadius().height(), boxHeight, v)))) + max<LayoutUnit>(ow, shadowBottom);
LayoutRect bottomRect(newOutlineBox.x(),
min(newOutlineBox.maxY(), oldOutlineBox.maxY()) - borderHeight,
max(newOutlineBox.width(), oldOutlineBox.width()),
height + borderHeight);
LayoutUnit bottom = min(newBounds.maxY(), oldBounds.maxY());
if (bottomRect.y() < bottom) {
bottomRect.setHeight(min(bottomRect.height(), bottom - bottomRect.y()));
repaintUsingContainer(repaintContainer, bottomRect);
}
}
return false;
}
void RenderObject::repaintDuringLayoutIfMoved(const LayoutRect&)
{
}
void RenderObject::repaintOverhangingFloats(bool)
{
}
bool RenderObject::checkForRepaintDuringLayout() const
{
return !document()->view()->needsFullRepaint() && !hasLayer();
}
LayoutRect RenderObject::rectWithOutlineForRepaint(RenderBoxModelObject* repaintContainer, LayoutUnit outlineWidth) const
{
LayoutRect r(clippedOverflowRectForRepaint(repaintContainer));
r.inflate(outlineWidth);
return r;
}
LayoutRect RenderObject::clippedOverflowRectForRepaint(RenderBoxModelObject*) const
{
ASSERT_NOT_REACHED();
return LayoutRect();
}
void RenderObject::computeRectForRepaint(RenderBoxModelObject* repaintContainer, LayoutRect& rect, bool fixed) const
{
if (repaintContainer == this)
return;
if (RenderObject* o = parent()) {
if (o->isBlockFlow()) {
RenderBlock* cb = toRenderBlock(o);
if (cb->hasColumns())
cb->adjustRectForColumns(rect);
}
if (o->hasOverflowClip()) {
RenderBox* boxParent = toRenderBox(o);
LayoutRect repaintRect(rect);
repaintRect.move(-boxParent->scrolledContentOffset());
LayoutRect boxRect(LayoutPoint(), boxParent->cachedSizeForOverflowClip());
rect = intersection(repaintRect, boxRect);
if (rect.isEmpty())
return;
}
o->computeRectForRepaint(repaintContainer, rect, fixed);
}
}
void RenderObject::computeFloatRectForRepaint(RenderBoxModelObject*, FloatRect&, bool) const
{
ASSERT_NOT_REACHED();
}
void RenderObject::dirtyLinesFromChangedChild(RenderObject*)
{
}
#ifndef NDEBUG
void RenderObject::showTreeForThis() const
{
if (node())
node()->showTreeForThis();
}
void RenderObject::showRenderTreeForThis() const
{
showRenderTree(this, 0);
}
void RenderObject::showLineTreeForThis() const
{
if (containingBlock())
containingBlock()->showLineTreeAndMark(0, 0, 0, 0, this);
}
void RenderObject::showRenderObject() const
{
showRenderObject(0);
}
void RenderObject::showRenderObject(int printedCharacters) const
{
if (!this) {
fputs("(null)\n", stderr);
return;
}
printedCharacters += fprintf(stderr, "%s %p", renderName(), this);
if (node()) {
if (printedCharacters)
for (; printedCharacters < showTreeCharacterOffset; printedCharacters++)
fputc(' ', stderr);
fputc('\t', stderr);
node()->showNode();
} else
fputc('\n', stderr);
}
void RenderObject::showRenderTreeAndMark(const RenderObject* markedObject1, const char* markedLabel1, const RenderObject* markedObject2, const char* markedLabel2, int depth) const
{
int printedCharacters = 0;
if (markedObject1 == this && markedLabel1)
printedCharacters += fprintf(stderr, "%s", markedLabel1);
if (markedObject2 == this && markedLabel2)
printedCharacters += fprintf(stderr, "%s", markedLabel2);
for (; printedCharacters < depth * 2; printedCharacters++)
fputc(' ', stderr);
showRenderObject(printedCharacters);
if (!this)
return;
for (const RenderObject* child = firstChild(); child; child = child->nextSibling())
child->showRenderTreeAndMark(markedObject1, markedLabel1, markedObject2, markedLabel2, depth + 1);
}
#endif // NDEBUG
Color RenderObject::selectionBackgroundColor() const
{
Color color;
if (style()->userSelect() != SELECT_NONE) {
RefPtr<RenderStyle> pseudoStyle = getUncachedPseudoStyle(SELECTION);
if (pseudoStyle && pseudoStyle->visitedDependentColor(CSSPropertyBackgroundColor).isValid())
color = pseudoStyle->visitedDependentColor(CSSPropertyBackgroundColor).blendWithWhite();
else
color = frame()->selection()->isFocusedAndActive() ?
theme()->activeSelectionBackgroundColor() :
theme()->inactiveSelectionBackgroundColor();
}
return color;
}
Color RenderObject::selectionColor(int colorProperty) const
{
Color color;
if (style()->userSelect() == SELECT_NONE
|| (frame()->view()->paintBehavior() & PaintBehaviorSelectionOnly))
return color;
if (RefPtr<RenderStyle> pseudoStyle = getUncachedPseudoStyle(SELECTION)) {
color = pseudoStyle->visitedDependentColor(colorProperty);
if (!color.isValid())
color = pseudoStyle->visitedDependentColor(CSSPropertyColor);
} else
color = frame()->selection()->isFocusedAndActive() ?
theme()->activeSelectionForegroundColor() :
theme()->inactiveSelectionForegroundColor();
return color;
}
Color RenderObject::selectionForegroundColor() const
{
return selectionColor(CSSPropertyWebkitTextFillColor);
}
Color RenderObject::selectionEmphasisMarkColor() const
{
return selectionColor(CSSPropertyWebkitTextEmphasisColor);
}
void RenderObject::selectionStartEnd(int& spos, int& epos) const
{
view()->selectionStartEnd(spos, epos);
}
void RenderObject::handleDynamicFloatPositionChange()
{
setInline(style()->isDisplayInlineType());
if (isInline() != parent()->childrenInline()) {
if (!isInline())
toRenderBoxModelObject(parent())->childBecameNonInline(this);
else {
RenderBlock* block = toRenderBlock(parent())->createAnonymousBlock();
RenderObjectChildList* childlist = parent()->virtualChildren();
childlist->insertChildNode(parent(), block, this);
block->children()->appendChildNode(block, childlist->removeChildNode(parent(), this));
}
}
}
void RenderObject::setAnimatableStyle(PassRefPtr<RenderStyle> style)
{
if (!isText() && style)
setStyle(animation()->updateAnimations(this, style.get()));
else
setStyle(style);
}
StyleDifference RenderObject::adjustStyleDifference(StyleDifference diff, unsigned contextSensitiveProperties) const
{
#if USE(ACCELERATED_COMPOSITING)
if (contextSensitiveProperties & ContextSensitivePropertyTransform) {
if (!isText() && (!hasLayer() || !toRenderBoxModelObject(this)->layer()->isComposited())) {
if (!hasLayer())
diff = StyleDifferenceLayout; else if (diff < StyleDifferenceLayoutPositionedMovementOnly)
diff = StyleDifferenceSimplifiedLayout;
else if (diff < StyleDifferenceSimplifiedLayout)
diff = StyleDifferenceSimplifiedLayoutAndPositionedMovement;
} else if (diff < StyleDifferenceRecompositeLayer)
diff = StyleDifferenceRecompositeLayer;
}
if (contextSensitiveProperties & ContextSensitivePropertyOpacity) {
if (!isText() && (!hasLayer() || !toRenderBoxModelObject(this)->layer()->isComposited()))
diff = StyleDifferenceRepaintLayer;
else if (diff < StyleDifferenceRecompositeLayer)
diff = StyleDifferenceRecompositeLayer;
}
#if ENABLE(CSS_FILTERS)
if ((contextSensitiveProperties & ContextSensitivePropertyFilter) && hasLayer()) {
RenderLayer* layer = toRenderBoxModelObject(this)->layer();
if (!layer->isComposited() || layer->paintsWithFilters())
diff = StyleDifferenceRepaintLayer;
else if (diff < StyleDifferenceRecompositeLayer)
diff = StyleDifferenceRecompositeLayer;
}
#endif
if (diff == StyleDifferenceEqual && style() && isBoxModelObject()) {
if (hasLayer() != toRenderBoxModelObject(this)->requiresLayer())
diff = StyleDifferenceLayout;
}
#else
UNUSED_PARAM(contextSensitiveProperties);
#endif
if (diff == StyleDifferenceRepaintLayer && !hasLayer())
diff = StyleDifferenceRepaint;
return diff;
}
void RenderObject::setStyle(PassRefPtr<RenderStyle> style)
{
if (m_style == style) {
#if USE(ACCELERATED_COMPOSITING)
ASSERT(!isRenderIFrame() && !isEmbeddedObject());
#endif
return;
}
StyleDifference diff = StyleDifferenceEqual;
unsigned contextSensitiveProperties = ContextSensitivePropertyNone;
if (m_style)
diff = m_style->diff(style.get(), contextSensitiveProperties);
diff = adjustStyleDifference(diff, contextSensitiveProperties);
styleWillChange(diff, style.get());
RefPtr<RenderStyle> oldStyle = m_style.release();
m_style = style;
updateFillImages(oldStyle ? oldStyle->backgroundLayers() : 0, m_style ? m_style->backgroundLayers() : 0);
updateFillImages(oldStyle ? oldStyle->maskLayers() : 0, m_style ? m_style->maskLayers() : 0);
updateImage(oldStyle ? oldStyle->borderImage().image() : 0, m_style ? m_style->borderImage().image() : 0);
updateImage(oldStyle ? oldStyle->maskBoxImage().image() : 0, m_style ? m_style->maskBoxImage().image() : 0);
if (m_style->outlineWidth() > 0 && m_style->outlineSize() > maximalOutlineSize(PaintPhaseOutline))
toRenderView(document()->renderer())->setMaximalOutlineSize(m_style->outlineSize());
bool doesNotNeedLayout = !m_parent || isText();
styleDidChange(diff, oldStyle.get());
if (doesNotNeedLayout)
return;
StyleDifference updatedDiff = adjustStyleDifference(diff, contextSensitiveProperties);
if (diff <= StyleDifferenceLayoutPositionedMovementOnly) {
if (updatedDiff == StyleDifferenceLayout)
setNeedsLayoutAndPrefWidthsRecalc();
else if (updatedDiff == StyleDifferenceLayoutPositionedMovementOnly)
setNeedsPositionedMovementLayout();
else if (updatedDiff == StyleDifferenceSimplifiedLayoutAndPositionedMovement) {
setNeedsPositionedMovementLayout();
setNeedsSimplifiedNormalFlowLayout();
} else if (updatedDiff == StyleDifferenceSimplifiedLayout)
setNeedsSimplifiedNormalFlowLayout();
}
if (updatedDiff == StyleDifferenceRepaintLayer || updatedDiff == StyleDifferenceRepaint) {
repaint();
}
}
void RenderObject::setStyleInternal(PassRefPtr<RenderStyle> style)
{
m_style = style;
}
void RenderObject::styleWillChange(StyleDifference diff, const RenderStyle* newStyle)
{
if (m_style) {
if (newStyle) {
bool visibilityChanged = m_style->visibility() != newStyle->visibility()
|| m_style->zIndex() != newStyle->zIndex()
|| m_style->hasAutoZIndex() != newStyle->hasAutoZIndex();
#if ENABLE(DASHBOARD_SUPPORT)
if (visibilityChanged)
document()->setDashboardRegionsDirty(true);
#endif
if (visibilityChanged && AXObjectCache::accessibilityEnabled())
document()->axObjectCache()->childrenChanged(this);
if (m_style->visibility() != newStyle->visibility()) {
if (RenderLayer* l = enclosingLayer()) {
if (newStyle->visibility() == VISIBLE)
l->setHasVisibleContent(true);
else if (l->hasVisibleContent() && (this == l->renderer() || l->renderer()->style()->visibility() != VISIBLE)) {
l->dirtyVisibleContentStatus();
if (diff > StyleDifferenceRepaintLayer)
repaint();
}
}
}
}
if (m_parent && (diff == StyleDifferenceRepaint || newStyle->outlineSize() < m_style->outlineSize()))
repaint();
if (isFloating() && (m_style->floating() != newStyle->floating()))
toRenderBox(this)->removeFloatingOrPositionedChildFromBlockLists();
else if (isPositioned() && (m_style->position() != newStyle->position()))
toRenderBox(this)->removeFloatingOrPositionedChildFromBlockLists();
s_affectsParentBlock = isFloatingOrPositioned() &&
(!newStyle->isFloating() && newStyle->position() != AbsolutePosition && newStyle->position() != FixedPosition)
&& parent() && (parent()->isBlockFlow() || parent()->isRenderInline());
if (diff == StyleDifferenceLayout || diff == StyleDifferenceLayoutPositionedMovementOnly) {
setFloating(false);
setPositioned(false);
setRelPositioned(false);
}
setHorizontalWritingMode(true);
setPaintBackground(false);
setHasOverflowClip(false);
setHasTransform(false);
setHasReflection(false);
} else
s_affectsParentBlock = false;
if (view()->frameView()) {
bool shouldBlitOnFixedBackgroundImage = false;
#if ENABLE(FAST_MOBILE_SCROLLING)
#if PLATFORM(QT)
if (view()->frameView()->delegatesScrolling())
#endif
shouldBlitOnFixedBackgroundImage = true;
#endif
bool newStyleSlowScroll = newStyle && !shouldBlitOnFixedBackgroundImage && newStyle->hasFixedBackgroundImage();
bool oldStyleSlowScroll = m_style && !shouldBlitOnFixedBackgroundImage && m_style->hasFixedBackgroundImage();
if (oldStyleSlowScroll != newStyleSlowScroll) {
if (oldStyleSlowScroll)
view()->frameView()->removeSlowRepaintObject();
if (newStyleSlowScroll)
view()->frameView()->addSlowRepaintObject();
}
}
}
static bool areNonIdenticalCursorListsEqual(const RenderStyle* a, const RenderStyle* b)
{
ASSERT(a->cursors() != b->cursors());
return a->cursors() && b->cursors() && *a->cursors() == *b->cursors();
}
static inline bool areCursorsEqual(const RenderStyle* a, const RenderStyle* b)
{
return a->cursor() == b->cursor() && (a->cursors() == b->cursors() || areNonIdenticalCursorListsEqual(a, b));
}
void RenderObject::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
{
if (s_affectsParentBlock)
handleDynamicFloatPositionChange();
#if ENABLE(SVG)
SVGRenderSupport::styleChanged(this);
#endif
if (!m_parent)
return;
if (diff == StyleDifferenceLayout || diff == StyleDifferenceSimplifiedLayout) {
RenderCounter::rendererStyleChanged(this, oldStyle, m_style.get());
if (needsLayout() && oldStyle->position() != m_style->position())
markContainingBlocksForLayout();
if (diff == StyleDifferenceLayout)
setNeedsLayoutAndPrefWidthsRecalc();
else
setNeedsSimplifiedNormalFlowLayout();
} else if (diff == StyleDifferenceSimplifiedLayoutAndPositionedMovement) {
setNeedsPositionedMovementLayout();
setNeedsSimplifiedNormalFlowLayout();
} else if (diff == StyleDifferenceLayoutPositionedMovementOnly)
setNeedsPositionedMovementLayout();
if (oldStyle && !areCursorsEqual(oldStyle, style())) {
if (Frame* frame = this->frame())
frame->eventHandler()->dispatchFakeMouseMoveEventSoon();
}
}
void RenderObject::propagateStyleToAnonymousChildren(bool blockChildrenOnly)
{
for (RenderObject* child = firstChild(); child; child = child->nextSibling()) {
if (!child->isAnonymous() || child->style()->styleType() != NOPSEUDO)
continue;
if (blockChildrenOnly && !child->isRenderBlock())
continue;
#if ENABLE(FULLSCREEN_API)
if (child->isRenderFullScreen() || child->isRenderFullScreenPlaceholder())
continue;
#endif
RefPtr<RenderStyle> newStyle = RenderStyle::createAnonymousStyleWithDisplay(style(), child->style()->display());
if (style()->specifiesColumns()) {
if (child->style()->specifiesColumns())
newStyle->inheritColumnPropertiesFrom(style());
if (child->style()->columnSpan())
newStyle->setColumnSpan(ColumnSpanAll);
}
if (child->isRelPositioned() && toRenderBlock(child)->isAnonymousBlockContinuation())
newStyle->setPosition(child->style()->position());
child->setStyle(newStyle.release());
}
}
void RenderObject::updateFillImages(const FillLayer* oldLayers, const FillLayer* newLayers)
{
if (oldLayers && !oldLayers->next() && newLayers && !newLayers->next() && (oldLayers->image() == newLayers->image()))
return;
for (const FillLayer* currNew = newLayers; currNew; currNew = currNew->next()) {
if (currNew->image())
currNew->image()->addClient(this);
}
for (const FillLayer* currOld = oldLayers; currOld; currOld = currOld->next()) {
if (currOld->image())
currOld->image()->removeClient(this);
}
}
void RenderObject::updateImage(StyleImage* oldImage, StyleImage* newImage)
{
if (oldImage != newImage) {
if (oldImage)
oldImage->removeClient(this);
if (newImage)
newImage->addClient(this);
}
}
LayoutRect RenderObject::viewRect() const
{
return view()->viewRect();
}
FloatPoint RenderObject::localToAbsolute(const FloatPoint& localPoint, bool fixed, bool useTransforms) const
{
TransformState transformState(TransformState::ApplyTransformDirection, localPoint);
mapLocalToContainer(0, fixed, useTransforms, transformState);
transformState.flatten();
return transformState.lastPlanarPoint();
}
FloatPoint RenderObject::absoluteToLocal(const FloatPoint& containerPoint, bool fixed, bool useTransforms) const
{
TransformState transformState(TransformState::UnapplyInverseTransformDirection, containerPoint);
mapAbsoluteToLocalPoint(fixed, useTransforms, transformState);
transformState.flatten();
return transformState.lastPlanarPoint();
}
void RenderObject::mapLocalToContainer(RenderBoxModelObject* repaintContainer, bool fixed, bool useTransforms, TransformState& transformState, ApplyContainerFlipOrNot, bool* wasFixed) const
{
if (repaintContainer == this)
return;
RenderObject* o = parent();
if (!o)
return;
LayoutPoint centerPoint = roundedLayoutPoint(transformState.mappedPoint());
if (o->isBox() && o->style()->isFlippedBlocksWritingMode())
transformState.move(toRenderBox(o)->flipForWritingModeIncludingColumns(roundedLayoutPoint(transformState.mappedPoint())) - centerPoint);
LayoutSize columnOffset;
o->adjustForColumns(columnOffset, roundedLayoutPoint(transformState.mappedPoint()));
if (!columnOffset.isZero())
transformState.move(columnOffset);
if (o->hasOverflowClip())
transformState.move(-toRenderBox(o)->scrolledContentOffset());
o->mapLocalToContainer(repaintContainer, fixed, useTransforms, transformState, DoNotApplyContainerFlip, wasFixed);
}
const RenderObject* RenderObject::pushMappingToContainer(const RenderBoxModelObject* ancestorToStopAt, RenderGeometryMap& geometryMap) const
{
ASSERT_UNUSED(ancestorToStopAt, ancestorToStopAt != this);
RenderObject* container = parent();
if (!container)
return 0;
LayoutSize offset;
if (container->hasOverflowClip())
offset = -toRenderBox(container)->scrolledContentOffset();
geometryMap.push(this, offset, hasColumns());
return container;
}
void RenderObject::mapAbsoluteToLocalPoint(bool fixed, bool useTransforms, TransformState& transformState) const
{
RenderObject* o = parent();
if (o) {
o->mapAbsoluteToLocalPoint(fixed, useTransforms, transformState);
if (o->hasOverflowClip())
transformState.move(toRenderBox(o)->scrolledContentOffset());
}
}
bool RenderObject::shouldUseTransformFromContainer(const RenderObject* containerObject) const
{
#if ENABLE(3D_RENDERING)
return (hasLayer() && toRenderBoxModelObject(this)->layer()->transform()) || (containerObject && containerObject->style()->hasPerspective());
#else
UNUSED_PARAM(containerObject);
return hasTransform();
#endif
}
void RenderObject::getTransformFromContainer(const RenderObject* containerObject, const LayoutSize& offsetInContainer, TransformationMatrix& transform) const
{
transform.makeIdentity();
transform.translate(offsetInContainer.width(), offsetInContainer.height());
RenderLayer* layer;
if (hasLayer() && (layer = toRenderBoxModelObject(this)->layer()) && layer->transform())
transform.multiply(layer->currentTransform());
#if ENABLE(3D_RENDERING)
if (containerObject && containerObject->hasLayer() && containerObject->style()->hasPerspective()) {
ASSERT(containerObject->hasLayer());
FloatPoint perspectiveOrigin = toRenderBoxModelObject(containerObject)->layer()->perspectiveOrigin();
TransformationMatrix perspectiveMatrix;
perspectiveMatrix.applyPerspective(containerObject->style()->perspective());
transform.translateRight3d(-perspectiveOrigin.x(), -perspectiveOrigin.y(), 0);
transform = perspectiveMatrix * transform;
transform.translateRight3d(perspectiveOrigin.x(), perspectiveOrigin.y(), 0);
}
#else
UNUSED_PARAM(containerObject);
#endif
}
FloatQuad RenderObject::localToContainerQuad(const FloatQuad& localQuad, RenderBoxModelObject* repaintContainer, bool fixed, bool* wasFixed) const
{
TransformState transformState(TransformState::ApplyTransformDirection, localQuad.boundingBox().center(), localQuad);
mapLocalToContainer(repaintContainer, fixed, true, transformState, ApplyContainerFlip, wasFixed);
transformState.flatten();
return transformState.lastPlanarQuad();
}
FloatPoint RenderObject::localToContainerPoint(const FloatPoint& localPoint, RenderBoxModelObject* repaintContainer, bool fixed, bool* wasFixed) const
{
TransformState transformState(TransformState::ApplyTransformDirection, localPoint);
mapLocalToContainer(repaintContainer, fixed, true, transformState, ApplyContainerFlip, wasFixed);
transformState.flatten();
return transformState.lastPlanarPoint();
}
LayoutSize RenderObject::offsetFromContainer(RenderObject* o, const LayoutPoint& point, bool* offsetDependsOnPoint) const
{
ASSERT(o == container());
LayoutSize offset;
o->adjustForColumns(offset, point);
if (o->hasOverflowClip())
offset -= toRenderBox(o)->scrolledContentOffset();
if (offsetDependsOnPoint)
*offsetDependsOnPoint = hasColumns();
return offset;
}
LayoutSize RenderObject::offsetFromAncestorContainer(RenderObject* container) const
{
LayoutSize offset;
LayoutPoint referencePoint;
const RenderObject* currContainer = this;
do {
RenderObject* nextContainer = currContainer->container();
ASSERT(nextContainer); if (!nextContainer)
break;
ASSERT(!currContainer->hasTransform());
LayoutSize currentOffset = currContainer->offsetFromContainer(nextContainer, referencePoint);
offset += currentOffset;
referencePoint.move(currentOffset);
currContainer = nextContainer;
} while (currContainer != container);
return offset;
}
LayoutRect RenderObject::localCaretRect(InlineBox*, int, LayoutUnit* extraWidthToEndOfLine)
{
if (extraWidthToEndOfLine)
*extraWidthToEndOfLine = 0;
return LayoutRect();
}
bool RenderObject::isRooted(RenderView** view)
{
RenderObject* o = this;
while (o->parent())
o = o->parent();
if (!o->isRenderView())
return false;
if (view)
*view = toRenderView(o);
return true;
}
RenderObject* RenderObject::rendererForRootBackground()
{
ASSERT(isRoot());
if (!hasBackground() && node() && node()->hasTagName(HTMLNames::htmlTag)) {
HTMLElement* body = document()->body();
RenderObject* bodyObject = (body && body->hasLocalName(bodyTag)) ? body->renderer() : 0;
if (bodyObject)
return bodyObject;
}
return this;
}
RespectImageOrientationEnum RenderObject::shouldRespectImageOrientation() const
{
return document()->isImageDocument() || (document()->settings() && document()->settings()->shouldRespectImageOrientation() && node() && node()->hasTagName(HTMLNames::imgTag)) ? RespectImageOrientation : DoNotRespectImageOrientation;
}
bool RenderObject::hasOutlineAnnotation() const
{
return node() && node()->isLink() && document()->printing();
}
RenderObject* RenderObject::container(const RenderBoxModelObject* repaintContainer, bool* repaintContainerSkipped) const
{
if (repaintContainerSkipped)
*repaintContainerSkipped = false;
RenderObject* o = parent();
if (isText())
return o;
EPosition pos = m_style->position();
if (pos == FixedPosition) {
while (o && o->parent() && !(o->hasTransform() && o->isRenderBlock())) {
if (repaintContainerSkipped && o == repaintContainer)
*repaintContainerSkipped = true;
#if ENABLE(SVG)
if (o->isSVGForeignObject())
break;
#endif
o = o->parent();
}
} else if (pos == AbsolutePosition) {
while (o && o->style()->position() == StaticPosition && !o->isRenderView() && !(o->hasTransform() && o->isRenderBlock())) {
if (repaintContainerSkipped && o == repaintContainer)
*repaintContainerSkipped = true;
#if ENABLE(SVG)
if (o->isSVGForeignObject()) break;
#endif
o = o->parent();
}
}
return o;
}
bool RenderObject::isSelectionBorder() const
{
SelectionState st = selectionState();
return st == SelectionStart || st == SelectionEnd || st == SelectionBoth;
}
inline void RenderObject::clearLayoutRootIfNeeded() const
{
if (!documentBeingDestroyed() && frame()) {
if (FrameView* view = frame()->view()) {
if (view->layoutRoot() == this) {
ASSERT_NOT_REACHED();
view->clearLayoutRoot();
}
}
}
}
void RenderObject::willBeDestroyed()
{
RenderObjectChildList* children = virtualChildren();
if (children)
children->destroyLeftoverChildren();
ASSERT(frame());
if (frame() && frame()->eventHandler()->autoscrollRenderer() == this)
frame()->eventHandler()->stopAutoscrollTimer(true);
animation()->cancelAnimations(this);
if (AXObjectCache::accessibilityEnabled())
document()->axObjectCache()->childrenChanged(this->parent());
remove();
if (AXObjectCache::accessibilityEnabled())
document()->axObjectCache()->remove(this);
#ifndef NDEBUG
if (!documentBeingDestroyed() && view() && view()->hasRenderNamedFlowThreads()) {
const RenderNamedFlowThreadList* flowThreadList = view()->flowThreadController()->renderNamedFlowThreadList();
for (RenderNamedFlowThreadList::const_iterator iter = flowThreadList->begin(); iter != flowThreadList->end(); ++iter) {
const RenderNamedFlowThread* renderFlowThread = *iter;
ASSERT(!renderFlowThread->hasChild(this));
ASSERT(!renderFlowThread->hasChildInfo(this));
}
}
#endif
if (hasCounterNodeMap())
RenderCounter::destroyCounterNodes(this);
if (hasLayer()) {
setHasLayer(false);
toRenderBoxModelObject(this)->destroyLayer();
}
setAncestorLineBoxDirty(false);
clearLayoutRootIfNeeded();
}
void RenderObject::insertedIntoTree()
{
RenderLayer* layer = 0;
if (firstChild() || hasLayer()) {
layer = parent()->enclosingLayer();
addLayers(layer);
}
if (parent()->style()->visibility() != VISIBLE && style()->visibility() == VISIBLE && !hasLayer()) {
if (!layer)
layer = parent()->enclosingLayer();
if (layer)
layer->setHasVisibleContent(true);
}
if (!isFloating() && parent()->childrenInline())
parent()->dirtyLinesFromChangedChild(this);
if (RenderNamedFlowThread* containerFlowThread = parent()->enclosingRenderNamedFlowThread())
containerFlowThread->addFlowChild(this);
}
void RenderObject::willBeRemovedFromTree()
{
RenderLayer* layer = 0;
if (parent()->style()->visibility() != VISIBLE && style()->visibility() == VISIBLE && !hasLayer()) {
if ((layer = parent()->enclosingLayer()))
layer->dirtyVisibleContentStatus();
}
if (firstChild() || hasLayer()) {
if (!layer)
layer = parent()->enclosingLayer();
removeLayers(layer);
}
if (isPositioned() && parent()->childrenInline())
parent()->dirtyLinesFromChangedChild(this);
if (inRenderFlowThread() && isBox()) {
enclosingRenderFlowThread()->removeRenderBoxRegionInfo(toRenderBox(this));
if (canHaveRegionStyle())
enclosingRenderFlowThread()->clearRenderBoxCustomStyle(toRenderBox(this));
}
if (RenderNamedFlowThread* containerFlowThread = parent()->enclosingRenderNamedFlowThread())
containerFlowThread->removeFlowChild(this);
#if ENABLE(SVG)
parent()->setNeedsBoundariesUpdate();
#endif
}
void RenderObject::destroyAndCleanupAnonymousWrappers()
{
RenderObject* parent = this->parent();
if (documentBeingDestroyed() || !parent || !parent->isAnonymous()) {
destroy();
return;
}
bool parentIsLeftOverAnonymousWrapper = false;
if (parent->isTableCell())
parentIsLeftOverAnonymousWrapper = parent->firstChild() == this && parent->lastChild() == this;
destroy();
if (parentIsLeftOverAnonymousWrapper) {
ASSERT(!parent->firstChild());
parent->destroyAndCleanupAnonymousWrappers();
}
}
void RenderObject::destroy()
{
willBeDestroyed();
arenaDelete(renderArena(), this);
}
void RenderObject::arenaDelete(RenderArena* arena, void* base)
{
if (m_style) {
for (const FillLayer* bgLayer = m_style->backgroundLayers(); bgLayer; bgLayer = bgLayer->next()) {
if (StyleImage* backgroundImage = bgLayer->image())
backgroundImage->removeClient(this);
}
for (const FillLayer* maskLayer = m_style->maskLayers(); maskLayer; maskLayer = maskLayer->next()) {
if (StyleImage* maskImage = maskLayer->image())
maskImage->removeClient(this);
}
if (StyleImage* borderImage = m_style->borderImage().image())
borderImage->removeClient(this);
if (StyleImage* maskBoxImage = m_style->maskBoxImage().image())
maskBoxImage->removeClient(this);
}
#ifndef NDEBUG
void* savedBase = baseOfRenderObjectBeingDeleted;
baseOfRenderObjectBeingDeleted = base;
#endif
delete this;
#ifndef NDEBUG
baseOfRenderObjectBeingDeleted = savedBase;
#endif
arena->free(*(size_t*)base, base);
}
VisiblePosition RenderObject::positionForPoint(const LayoutPoint&)
{
return createVisiblePosition(caretMinOffset(), DOWNSTREAM);
}
void RenderObject::updateDragState(bool dragOn)
{
bool valueChanged = (dragOn != isDragging());
setIsDragging(dragOn);
if (valueChanged && style()->affectedByDragRules() && node())
node()->setNeedsStyleRecalc();
for (RenderObject* curr = firstChild(); curr; curr = curr->nextSibling())
curr->updateDragState(dragOn);
}
bool RenderObject::isComposited() const
{
return hasLayer() && toRenderBoxModelObject(this)->layer()->isComposited();
}
bool RenderObject::hitTest(const HitTestRequest& request, HitTestResult& result, const LayoutPoint& pointInContainer, const LayoutPoint& accumulatedOffset, HitTestFilter hitTestFilter)
{
bool inside = false;
if (hitTestFilter != HitTestSelf) {
inside = nodeAtPoint(request, result, pointInContainer, accumulatedOffset, HitTestForeground);
if (!inside)
inside = nodeAtPoint(request, result, pointInContainer, accumulatedOffset, HitTestFloat);
if (!inside)
inside = nodeAtPoint(request, result, pointInContainer, accumulatedOffset, HitTestChildBlockBackgrounds);
}
if (hitTestFilter != HitTestDescendants && !inside)
inside = nodeAtPoint(request, result, pointInContainer, accumulatedOffset, HitTestBlockBackground);
return inside;
}
void RenderObject::updateHitTestResult(HitTestResult& result, const LayoutPoint& point)
{
if (result.innerNode())
return;
Node* n = node();
if (n) {
result.setInnerNode(n);
if (!result.innerNonSharedNode())
result.setInnerNonSharedNode(n);
result.setLocalPoint(point);
}
}
bool RenderObject::nodeAtPoint(const HitTestRequest&, HitTestResult&, const LayoutPoint& , const LayoutPoint& , HitTestAction)
{
return false;
}
void RenderObject::scheduleRelayout()
{
if (isRenderView()) {
FrameView* view = toRenderView(this)->frameView();
if (view)
view->scheduleRelayout();
} else {
if (isRooted()) {
if (RenderView* renderView = view()) {
if (FrameView* frameView = renderView->frameView())
frameView->scheduleRelayoutOfSubtree(this);
}
}
}
}
void RenderObject::layout()
{
ASSERT(needsLayout());
RenderObject* child = firstChild();
while (child) {
child->layoutIfNeeded();
ASSERT(!child->needsLayout());
child = child->nextSibling();
}
setNeedsLayout(false);
}
PassRefPtr<RenderStyle> RenderObject::uncachedFirstLineStyle(RenderStyle* style) const
{
if (!document()->usesFirstLineRules())
return 0;
ASSERT(!isText());
RefPtr<RenderStyle> result;
if (isBlockFlow()) {
if (RenderBlock* firstLineBlock = this->firstLineBlock())
result = firstLineBlock->getUncachedPseudoStyle(FIRST_LINE, style, firstLineBlock == this ? style : 0);
} else if (!isAnonymous() && isRenderInline()) {
RenderStyle* parentStyle = parent()->firstLineStyle();
if (parentStyle != parent()->style())
result = getUncachedPseudoStyle(FIRST_LINE_INHERITED, parentStyle, style);
}
return result.release();
}
RenderStyle* RenderObject::firstLineStyleSlowCase() const
{
ASSERT(document()->usesFirstLineRules());
RenderStyle* style = m_style.get();
const RenderObject* renderer = isText() ? parent() : this;
if (renderer->isBlockFlow()) {
if (RenderBlock* firstLineBlock = renderer->firstLineBlock())
style = firstLineBlock->getCachedPseudoStyle(FIRST_LINE, style);
} else if (!renderer->isAnonymous() && renderer->isRenderInline()) {
RenderStyle* parentStyle = renderer->parent()->firstLineStyle();
if (parentStyle != renderer->parent()->style()) {
renderer->style()->setHasPseudoStyle(FIRST_LINE_INHERITED);
style = renderer->getCachedPseudoStyle(FIRST_LINE_INHERITED, parentStyle);
}
}
return style;
}
RenderStyle* RenderObject::getCachedPseudoStyle(PseudoId pseudo, RenderStyle* parentStyle) const
{
if (pseudo < FIRST_INTERNAL_PSEUDOID && !style()->hasPseudoStyle(pseudo))
return 0;
RenderStyle* cachedStyle = style()->getCachedPseudoStyle(pseudo);
if (cachedStyle)
return cachedStyle;
RefPtr<RenderStyle> result = getUncachedPseudoStyle(pseudo, parentStyle);
if (result)
return style()->addCachedPseudoStyle(result.release());
return 0;
}
PassRefPtr<RenderStyle> RenderObject::getUncachedPseudoStyle(PseudoId pseudo, RenderStyle* parentStyle, RenderStyle* ownStyle) const
{
if (pseudo < FIRST_INTERNAL_PSEUDOID && !ownStyle && !style()->hasPseudoStyle(pseudo))
return 0;
if (!parentStyle) {
ASSERT(!ownStyle);
parentStyle = style();
}
Node* n = node();
while (n && !n->isElementNode())
n = n->parentNode();
if (!n)
return 0;
Element* element = toElement(n);
if (pseudo == FIRST_LINE_INHERITED) {
RefPtr<RenderStyle> result = document()->styleResolver()->styleForElement(element, parentStyle, DisallowStyleSharing);
result->setStyleType(FIRST_LINE_INHERITED);
return result.release();
}
return document()->styleResolver()->pseudoStyleForElement(pseudo, element, parentStyle);
}
static Color decorationColor(RenderObject* renderer)
{
Color result;
if (renderer->style()->textStrokeWidth() > 0) {
result = renderer->style()->visitedDependentColor(CSSPropertyWebkitTextStrokeColor);
if (result.alpha())
return result;
}
result = renderer->style()->visitedDependentColor(CSSPropertyWebkitTextFillColor);
return result;
}
void RenderObject::getTextDecorationColors(int decorations, Color& underline, Color& overline,
Color& linethrough, bool quirksMode)
{
RenderObject* curr = this;
do {
int currDecs = curr->style()->textDecoration();
if (currDecs) {
if (currDecs & UNDERLINE) {
decorations &= ~UNDERLINE;
underline = decorationColor(curr);
}
if (currDecs & OVERLINE) {
decorations &= ~OVERLINE;
overline = decorationColor(curr);
}
if (currDecs & LINE_THROUGH) {
decorations &= ~LINE_THROUGH;
linethrough = decorationColor(curr);
}
}
if (curr->isFloating() || curr->isPositioned() || curr->isRubyText())
return;
curr = curr->parent();
if (curr && curr->isAnonymousBlock() && toRenderBlock(curr)->continuation())
curr = toRenderBlock(curr)->continuation();
} while (curr && decorations && (!quirksMode || !curr->node() ||
(!curr->node()->hasTagName(aTag) && !curr->node()->hasTagName(fontTag))));
if (decorations && curr) {
if (decorations & UNDERLINE)
underline = decorationColor(curr);
if (decorations & OVERLINE)
overline = decorationColor(curr);
if (decorations & LINE_THROUGH)
linethrough = decorationColor(curr);
}
}
#if ENABLE(DASHBOARD_SUPPORT)
void RenderObject::addDashboardRegions(Vector<DashboardRegionValue>& regions)
{
if (style()->visibility() != VISIBLE || !isBox())
return;
RenderBox* box = toRenderBox(this);
const Vector<StyleDashboardRegion>& styleRegions = style()->dashboardRegions();
unsigned i, count = styleRegions.size();
for (i = 0; i < count; i++) {
StyleDashboardRegion styleRegion = styleRegions[i];
LayoutUnit w = box->width();
LayoutUnit h = box->height();
DashboardRegionValue region;
region.label = styleRegion.label;
region.bounds = LayoutRect(styleRegion.offset.left().value(),
styleRegion.offset.top().value(),
w - styleRegion.offset.left().value() - styleRegion.offset.right().value(),
h - styleRegion.offset.top().value() - styleRegion.offset.bottom().value());
region.type = styleRegion.type;
region.clip = region.bounds;
computeAbsoluteRepaintRect(region.clip);
if (region.clip.height() < 0) {
region.clip.setHeight(0);
region.clip.setWidth(0);
}
FloatPoint absPos = localToAbsolute();
region.bounds.setX(absPos.x() + styleRegion.offset.left().value());
region.bounds.setY(absPos.y() + styleRegion.offset.top().value());
regions.append(region);
}
}
void RenderObject::collectDashboardRegions(Vector<DashboardRegionValue>& regions)
{
if (isText())
return;
addDashboardRegions(regions);
for (RenderObject* curr = firstChild(); curr; curr = curr->nextSibling())
curr->collectDashboardRegions(regions);
}
#endif
bool RenderObject::willRenderImage(CachedImage*)
{
if (style()->visibility() != VISIBLE)
return false;
if (document()->activeDOMObjectsAreSuspended())
return false;
return !document()->inPageCache() && !document()->view()->isOffscreen();
}
int RenderObject::maximalOutlineSize(PaintPhase p) const
{
if (p != PaintPhaseOutline && p != PaintPhaseSelfOutline && p != PaintPhaseChildOutlines)
return 0;
return toRenderView(document()->renderer())->maximalOutlineSize();
}
int RenderObject::caretMinOffset() const
{
return 0;
}
int RenderObject::caretMaxOffset() const
{
if (isReplaced())
return node() ? max(1U, node()->childNodeCount()) : 1;
if (isHR())
return 1;
return 0;
}
int RenderObject::previousOffset(int current) const
{
return current - 1;
}
int RenderObject::previousOffsetForBackwardDeletion(int current) const
{
return current - 1;
}
int RenderObject::nextOffset(int current) const
{
return current + 1;
}
void RenderObject::adjustRectForOutlineAndShadow(LayoutRect& rect) const
{
int outlineSize = outlineStyleForRepaint()->outlineSize();
if (const ShadowData* boxShadow = style()->boxShadow()) {
boxShadow->adjustRectForShadow(rect, outlineSize);
return;
}
rect.inflate(outlineSize);
}
AnimationController* RenderObject::animation() const
{
return frame()->animation();
}
void RenderObject::imageChanged(CachedImage* image, const IntRect* rect)
{
imageChanged(static_cast<WrappedImagePtr>(image), rect);
}
RenderBoxModelObject* RenderObject::offsetParent() const
{
if (isRoot() || isBody() || (isPositioned() && style()->position() == FixedPosition))
return 0;
bool skipTables = isPositioned() || isRelPositioned();
float currZoom = style()->effectiveZoom();
RenderObject* curr = parent();
while (curr && (!curr->node() || (!curr->isPositioned() && !curr->isRelPositioned() && !curr->isBody()))) {
Node* element = curr->node();
if (!skipTables && element && (element->hasTagName(tableTag) || element->hasTagName(tdTag) || element->hasTagName(thTag)))
break;
float newZoom = curr->style()->effectiveZoom();
if (currZoom != newZoom)
break;
currZoom = newZoom;
curr = curr->parent();
}
return curr && curr->isBoxModelObject() ? toRenderBoxModelObject(curr) : 0;
}
VisiblePosition RenderObject::createVisiblePosition(int offset, EAffinity affinity)
{
if (Node* node = this->node()) {
if (!node->rendererIsEditable()) {
Position position = createLegacyEditingPosition(node, offset);
Position candidate = position.downstream(CanCrossEditingBoundary);
if (candidate.deprecatedNode()->rendererIsEditable())
return VisiblePosition(candidate, affinity);
candidate = position.upstream(CanCrossEditingBoundary);
if (candidate.deprecatedNode()->rendererIsEditable())
return VisiblePosition(candidate, affinity);
}
return VisiblePosition(createLegacyEditingPosition(node, offset), affinity);
}
RenderObject* child = this;
while (RenderObject* parent = child->parent()) {
RenderObject* renderer = child;
while ((renderer = renderer->nextInPreOrder(parent))) {
if (Node* node = renderer->node())
return VisiblePosition(firstPositionInOrBeforeNode(node), DOWNSTREAM);
}
renderer = child;
while ((renderer = renderer->previousInPreOrder())) {
if (renderer == parent)
break;
if (Node* node = renderer->node())
return VisiblePosition(lastPositionInOrAfterNode(node), DOWNSTREAM);
}
if (Node* node = parent->node())
return VisiblePosition(firstPositionInOrBeforeNode(node), DOWNSTREAM);
child = parent;
}
return VisiblePosition();
}
VisiblePosition RenderObject::createVisiblePosition(const Position& position)
{
if (position.isNotNull())
return VisiblePosition(position);
ASSERT(!node());
return createVisiblePosition(0, DOWNSTREAM);
}
CursorDirective RenderObject::getCursor(const LayoutPoint&, Cursor&) const
{
return SetCursorBasedOnStyle;
}
bool RenderObject::canUpdateSelectionOnRootLineBoxes()
{
if (needsLayout())
return false;
RenderBlock* containingBlock = this->containingBlock();
return containingBlock ? !containingBlock->needsLayout() : true;
}
bool RenderObject::canBeReplacedWithInlineRunIn() const
{
return true;
}
#if ENABLE(SVG)
RenderSVGResourceContainer* RenderObject::toRenderSVGResourceContainer()
{
ASSERT_NOT_REACHED();
return 0;
}
void RenderObject::setNeedsBoundariesUpdate()
{
if (RenderObject* renderer = parent())
renderer->setNeedsBoundariesUpdate();
}
FloatRect RenderObject::objectBoundingBox() const
{
ASSERT_NOT_REACHED();
return FloatRect();
}
FloatRect RenderObject::strokeBoundingBox() const
{
ASSERT_NOT_REACHED();
return FloatRect();
}
FloatRect RenderObject::repaintRectInLocalCoordinates() const
{
ASSERT_NOT_REACHED();
return FloatRect();
}
AffineTransform RenderObject::localTransform() const
{
static const AffineTransform identity;
return identity;
}
const AffineTransform& RenderObject::localToParentTransform() const
{
static const AffineTransform identity;
return identity;
}
bool RenderObject::nodeAtFloatPoint(const HitTestRequest&, HitTestResult&, const FloatPoint&, HitTestAction)
{
ASSERT_NOT_REACHED();
return false;
}
#endif // ENABLE(SVG)
}
#ifndef NDEBUG
void showTree(const WebCore::RenderObject* object)
{
if (object)
object->showTreeForThis();
}
void showLineTree(const WebCore::RenderObject* object)
{
if (object)
object->showLineTreeForThis();
}
void showRenderTree(const WebCore::RenderObject* object1)
{
showRenderTree(object1, 0);
}
void showRenderTree(const WebCore::RenderObject* object1, const WebCore::RenderObject* object2)
{
if (object1) {
const WebCore::RenderObject* root = object1;
while (root->parent())
root = root->parent();
root->showRenderTreeAndMark(object1, "*", object2, "-", 0);
}
}
#endif