--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/rendering/RenderObject.cpp Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,2770 @@
+/*
+ * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
+ * (C) 1999 Antti Koivisto (koivisto@kde.org)
+ * (C) 2000 Dirk Mueller (mueller@kde.org)
+ * (C) 2004 Allan Sandfeld Jensen (kde@carewolf.com)
+ * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
+ * Copyright (C) 2009 Google Inc. All rights reserved.
+ * Copyright (C) 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
+ *
+ * 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 "RenderObject.h"
+
+#include "AXObjectCache.h"
+#include "Chrome.h"
+#include "CSSStyleSelector.h"
+#include "DashArray.h"
+#include "FloatQuad.h"
+#include "Frame.h"
+#include "FrameView.h"
+#include "GraphicsContext.h"
+#include "HTMLNames.h"
+#include "HitTestResult.h"
+#include "Page.h"
+#include "RenderArena.h"
+#include "RenderCounter.h"
+#include "RenderFlexibleBox.h"
+#include "RenderImageGeneratedContent.h"
+#include "RenderInline.h"
+#include "RenderLayer.h"
+#include "RenderListItem.h"
+#include "RenderRuby.h"
+#include "RenderRubyText.h"
+#include "RenderTableCell.h"
+#include "RenderTableCol.h"
+#include "RenderTableRow.h"
+#include "RenderTheme.h"
+#include "RenderView.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(WML)
+#include "WMLNames.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;
+#endif
+
+bool RenderObject::s_affectsParentBlock = false;
+
+void* RenderObject::operator new(size_t sz, RenderArena* renderArena) throw()
+{
+ return renderArena->allocate(sz);
+}
+
+void RenderObject::operator delete(void* ptr, size_t sz)
+{
+ ASSERT(baseOfRenderObjectBeingDeleted == ptr);
+
+ // Stash size where destroy can find it.
+ *(size_t *)ptr = sz;
+}
+
+RenderObject* RenderObject::createObject(Node* node, RenderStyle* style)
+{
+ Document* doc = node->document();
+ RenderArena* arena = doc->renderArena();
+
+ // Minimal support for content properties replacing an entire element.
+ // Works only if we have exactly one piece of content and it's a URL.
+ // Otherwise acts as if we didn't support this feature.
+ const ContentData* contentData = style->contentData();
+ if (contentData && !contentData->next() && contentData->isImage() && doc != node) {
+ RenderImageGeneratedContent* image = new (arena) RenderImageGeneratedContent(node);
+ image->setStyle(style);
+ if (StyleImage* styleImage = contentData->image())
+ image->setStyleImage(styleImage);
+ return image;
+ }
+
+#if ENABLE(RUBY)
+ if (node->hasTagName(rubyTag)) {
+ if (style->display() == INLINE)
+ return new (arena) RenderRubyAsInline(node);
+ else if (style->display() == BLOCK)
+ return new (arena) RenderRubyAsBlock(node);
+ }
+ // treat <rt> as ruby text ONLY if it still has its default treatment of block
+ if (node->hasTagName(rtTag) && style->display() == BLOCK)
+ return new (arena) RenderRubyText(node);
+#endif
+
+ switch (style->display()) {
+ case NONE:
+ return 0;
+ case INLINE:
+ return new (arena) RenderInline(node);
+ case BLOCK:
+ case INLINE_BLOCK:
+ case RUN_IN:
+ case COMPACT:
+ 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:
+#if ENABLE(WCSS)
+ // As per the section 17.1 of the spec WAP-239-WCSS-20011026-a.pdf,
+ // the marquee box inherits and extends the characteristics of the
+ // principal block box ([CSS2] section 9.2.1).
+ case WAP_MARQUEE:
+#endif
+ return new (arena) RenderBlock(node);
+ case BOX:
+ case INLINE_BOX:
+ return new (arena) RenderFlexibleBox(node);
+ }
+
+ return 0;
+}
+
+#ifndef NDEBUG
+static WTF::RefCountedLeakCounter renderObjectCounter("RenderObject");
+#endif
+
+RenderObject::RenderObject(Node* node)
+ : CachedResourceClient()
+ , 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_needsLayout(false)
+ , m_needsPositionedMovementLayout(false)
+ , m_normalChildNeedsLayout(false)
+ , m_posChildNeedsLayout(false)
+ , m_prefWidthsDirty(false)
+ , m_floating(false)
+ , m_positioned(false)
+ , m_relPositioned(false)
+ , m_paintBackground(false)
+ , m_isAnonymous(node == node->document())
+ , m_isText(false)
+ , m_isBox(false)
+ , m_inline(true)
+ , m_replaced(false)
+ , m_isDragging(false)
+ , m_hasLayer(false)
+ , m_hasOverflowClip(false)
+ , m_hasTransform(false)
+ , m_hasReflection(false)
+ , m_hasOverrideSize(false)
+ , m_hasCounterNodeMap(false)
+ , m_everHadLayout(false)
+ , m_childrenInline(false)
+ , m_topMarginQuirk(false)
+ , m_bottomMarginQuirk(false)
+ , m_hasMarkupTruncation(false)
+ , m_selectionState(SelectionNone)
+ , m_hasColumns(false)
+ , m_cellWidthChanged(false)
+{
+#ifndef NDEBUG
+ renderObjectCounter.increment();
+#endif
+ ASSERT(node);
+}
+
+RenderObject::~RenderObject()
+{
+ ASSERT(!node() || documentBeingDestroyed() || !frame()->view() || frame()->view()->layoutRoot() != this);
+#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::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->isRenderBlock() && newChild->style()->display() == TABLE_CAPTION)
+ needsTable = !isTable();
+ else if (newChild->isTableSection())
+ needsTable = !isTable();
+ else if (newChild->isTableRow())
+ needsTable = !isTableSection();
+ else if (newChild->isTableCell()) {
+ needsTable = !isTableRow();
+ // I'm not 100% sure this is the best way to fix this, but without this
+ // change we recurse infinitely when trying to render the CSS2 test page:
+ // http://www.bath.ac.uk/%7Epy8ieh/internet/eviltests/htmlbodyheadrendering2.html.
+ // See Radar 2925291.
+ 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())
+ table = toRenderTable(afterChild);
+ else {
+ table = new (renderArena()) RenderTable(document() /* is anonymous */);
+ RefPtr<RenderStyle> newStyle = RenderStyle::create();
+ newStyle->inheritFrom(style());
+ newStyle->setDisplay(TABLE);
+ table->setStyle(newStyle.release());
+ addChild(table, beforeChild);
+ }
+ table->addChild(newChild);
+ } else {
+ // Just add it...
+ children->insertChildNode(this, newChild, beforeChild);
+ }
+ RenderCounter::rendererSubtreeAttached(newChild);
+ if (newChild->isText() && newChild->style()->textTransform() == CAPITALIZE) {
+ RefPtr<StringImpl> textToTransform = toRenderText(newChild)->originalText();
+ if (textToTransform)
+ toRenderText(newChild)->setText(textToTransform.release(), true);
+ }
+}
+
+void RenderObject::removeChild(RenderObject* oldChild)
+{
+ RenderObjectChildList* children = virtualChildren();
+ ASSERT(children);
+ if (!children)
+ return;
+
+ // We do this here instead of in removeChildNode, since the only extremely low-level uses of remove/appendChildNode
+ // cannot affect the positioned object list, and the floating object list is irrelevant (since the list gets cleared on
+ // layout anyway).
+ if (oldChild->isFloatingOrPositioned())
+ toRenderBox(oldChild)->removeFloatingOrPositionedChildFromBlockLists();
+
+ 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(RenderObject* stayWithin) const
+{
+ if (RenderObject* o = firstChild())
+ return o;
+
+ return nextInPreOrderAfterChildren(stayWithin);
+}
+
+RenderObject* RenderObject::nextInPreOrderAfterChildren(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) {
+ // We need to figure out the layer that follows newObject. We only do
+ // this the first time we find a child layer, and then we update the
+ // pointer values for newObject and beforeChild used by everyone else.
+ 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, RenderObject* newObject)
+{
+ if (!parentLayer)
+ return;
+
+ RenderObject* object = newObject;
+ 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)
+{
+ // Error check the parent layer passed in. If it's null, we can't find anything.
+ if (!parentLayer)
+ return 0;
+
+ // Step 1: If our layer is a child of the desired parent, then return our layer.
+ RenderLayer* ourLayer = hasLayer() ? toRenderBoxModelObject(this)->layer() : 0;
+ if (ourLayer && ourLayer->parent() == parentLayer)
+ return ourLayer;
+
+ // Step 2: If we don't have a layer, or our layer is the desired parent, then descend
+ // into our siblings trying to find the next layer whose parent is the desired parent.
+ 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;
+ }
+ }
+
+ // Step 3: If our layer is the desired parent layer, then we're finished. We didn't
+ // find anything.
+ if (parentLayer == ourLayer)
+ return 0;
+
+ // Step 4: If |checkParent| is set, climb up to our parent and check its siblings that
+ // follow us to see if we can locate a layer.
+ 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;
+}
+
+RenderLayer* RenderObject::enclosingSelfPaintingLayer() const
+{
+ const RenderObject* curr = this;
+ while (curr) {
+ RenderLayer* layer = curr->hasLayer() ? toRenderBoxModelObject(curr)->layer() : 0;
+ if (layer && layer->isSelfPaintingLayer())
+ return layer;
+ curr = curr->parent();
+ }
+ return 0;
+}
+
+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;
+}
+
+RenderBlock* RenderObject::firstLineBlock() const
+{
+ return 0;
+}
+
+void RenderObject::setPrefWidthsDirty(bool b, bool markParents)
+{
+ bool alreadyDirty = m_prefWidthsDirty;
+ m_prefWidthsDirty = b;
+ if (b && !alreadyDirty && markParents && (isText() || (style()->position() != FixedPosition && style()->position() != AbsolutePosition)))
+ invalidateContainerPrefWidths();
+}
+
+void RenderObject::invalidateContainerPrefWidths()
+{
+ // In order to avoid pathological behavior when inlines are deeply nested, we do include them
+ // in the chain that we mark dirty (even though they're kind of irrelevant).
+ RenderObject* o = isTableCell() ? containingBlock() : container();
+ while (o && !o->m_prefWidthsDirty) {
+ // Don't invalidate the outermost object of an unrooted subtree. That object will be
+ // invalidated when the subtree is added to the document.
+ RenderObject* container = o->isTableCell() ? o->containingBlock() : o->container();
+ if (!container && !o->isRenderView())
+ break;
+
+ o->m_prefWidthsDirty = true;
+ if (o->style()->position() == FixedPosition || o->style()->position() == AbsolutePosition)
+ // A positioned object has no effect on the min/max width of its containing block ever.
+ // We can optimize this case and not go up any further.
+ break;
+ o = container;
+ }
+}
+
+void RenderObject::setLayerNeedsFullRepaint()
+{
+ ASSERT(hasLayer());
+ toRenderBoxModelObject(this)->layer()->setNeedsFullRepaint(true);
+}
+
+RenderBlock* RenderObject::containingBlock() const
+{
+ if (isTableCell()) {
+ const RenderTableCell* cell = toRenderTableCell(this);
+ if (parent() && cell->section())
+ return cell->table();
+ return 0;
+ }
+
+ if (isRenderView())
+ return const_cast<RenderView*>(toRenderView(this));
+
+ RenderObject* o = parent();
+ if (!isText() && m_style->position() == FixedPosition) {
+ while (o && !o->isRenderView() && !(o->hasTransform() && o->isRenderBlock()))
+ o = o->parent();
+ } else if (!isText() && m_style->position() == AbsolutePosition) {
+ while (o && (o->style()->position() == StaticPosition || (o->isInline() && !o->isReplaced())) && !o->isRenderView() && !(o->hasTransform() && o->isRenderBlock())) {
+ // For relpositioned inlines, we return the nearest enclosing block. We don't try
+ // to return the inline itself. This allows us to avoid having a positioned objects
+ // list in all RenderInlines and lets us return a strongly-typed RenderBlock* result
+ // from this method. The container() method can actually be used to obtain the
+ // inline directly.
+ if (o->style()->position() == RelativePosition && o->isInline() && !o->isReplaced())
+ return o->containingBlock();
+#if ENABLE(SVG)
+ if (o->isSVGForeignObject()) //foreignObject is the containing block for contents inside it
+ break;
+#endif
+
+ o = o->parent();
+ }
+ } else {
+ while (o && ((o->isInline() && !o->isReplaced()) || o->isTableRow() || o->isTableSection()
+ || o->isTableCol() || o->isFrameSet() || o->isMedia()
+#if ENABLE(SVG)
+ || o->isSVGContainer() || o->isSVGRoot()
+#endif
+ ))
+ o = o->parent();
+ }
+
+ if (!o || !o->isRenderBlock())
+ return 0; // This can still happen in case of an orphaned tree
+
+ return toRenderBlock(o);
+}
+
+static bool mustRepaintFillLayers(const RenderObject* renderer, const FillLayer* layer)
+{
+ // Nobody will use multiple layers without wanting fancy positioning.
+ if (layer->next())
+ return true;
+
+ // Make sure we have a valid image.
+ StyleImage* img = layer->image();
+ if (!img || !img->canRender(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::mustRepaintBackgroundOrBorder() const
+{
+ if (hasMask() && mustRepaintFillLayers(this, style()->maskLayers()))
+ return true;
+
+ // If we don't have a background/border/mask, then nothing to do.
+ if (!hasBoxDecorations())
+ return false;
+
+ if (mustRepaintFillLayers(this, style()->backgroundLayers()))
+ return true;
+
+ // Our fill layers are ok. Let's check border.
+ if (style()->hasBorder()) {
+ // Border images are not ok.
+ StyleImage* borderImage = style()->borderImage().image();
+ bool shouldPaintBorderImage = borderImage && borderImage->canRender(style()->effectiveZoom());
+
+ // If the image hasn't loaded, we're still using the normal border style.
+ if (shouldPaintBorderImage && borderImage->isLoaded())
+ return true;
+ }
+
+ return false;
+}
+
+void RenderObject::drawLineForBoxSide(GraphicsContext* graphicsContext, int x1, int y1, int x2, int y2,
+ BoxSide s, Color c, EBorderStyle style,
+ int adjbw1, int adjbw2)
+{
+ int width = (s == BSTop || s == 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(c, m_style->colorSpace());
+ graphicsContext->setStrokeThickness(width);
+ graphicsContext->setStrokeStyle(style == DASHED ? DashedStroke : DottedStroke);
+
+ if (width > 0)
+ switch (s) {
+ 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;
+ }
+ break;
+ case DOUBLE: {
+ int third = (width + 1) / 3;
+
+ if (adjbw1 == 0 && adjbw2 == 0) {
+ graphicsContext->setStrokeStyle(NoStroke);
+ graphicsContext->setFillColor(c, m_style->colorSpace());
+ switch (s) {
+ 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;
+ }
+ } else {
+ int adjbw1bigthird = ((adjbw1 > 0) ? adjbw1 + 1 : adjbw1 - 1) / 3;
+ int adjbw2bigthird = ((adjbw2 > 0) ? adjbw2 + 1 : adjbw2 - 1) / 3;
+
+ switch (s) {
+ case BSTop:
+ drawLineForBoxSide(graphicsContext, x1 + max((-adjbw1 * 2 + 1) / 3, 0),
+ y1, x2 - max((-adjbw2 * 2 + 1) / 3, 0), y1 + third,
+ s, c, SOLID, adjbw1bigthird, adjbw2bigthird);
+ drawLineForBoxSide(graphicsContext, x1 + max((adjbw1 * 2 + 1) / 3, 0),
+ y2 - third, x2 - max((adjbw2 * 2 + 1) / 3, 0), y2,
+ s, c, SOLID, adjbw1bigthird, adjbw2bigthird);
+ break;
+ case BSLeft:
+ drawLineForBoxSide(graphicsContext, x1, y1 + max((-adjbw1 * 2 + 1) / 3, 0),
+ x1 + third, y2 - max((-adjbw2 * 2 + 1) / 3, 0),
+ s, c, SOLID, adjbw1bigthird, adjbw2bigthird);
+ drawLineForBoxSide(graphicsContext, x2 - third, y1 + max((adjbw1 * 2 + 1) / 3, 0),
+ x2, y2 - max((adjbw2 * 2 + 1) / 3, 0),
+ s, c, SOLID, adjbw1bigthird, adjbw2bigthird);
+ break;
+ case BSBottom:
+ drawLineForBoxSide(graphicsContext, x1 + max((adjbw1 * 2 + 1) / 3, 0),
+ y1, x2 - max((adjbw2 * 2 + 1) / 3, 0), y1 + third,
+ s, c, SOLID, adjbw1bigthird, adjbw2bigthird);
+ drawLineForBoxSide(graphicsContext, x1 + max((-adjbw1 * 2 + 1) / 3, 0),
+ y2 - third, x2 - max((-adjbw2 * 2 + 1) / 3, 0), y2,
+ s, c, SOLID, adjbw1bigthird, adjbw2bigthird);
+ break;
+ case BSRight:
+ drawLineForBoxSide(graphicsContext, x1, y1 + max((adjbw1 * 2 + 1) / 3, 0),
+ x1 + third, y2 - max((adjbw2 * 2 + 1) / 3, 0),
+ s, c, SOLID, adjbw1bigthird, adjbw2bigthird);
+ drawLineForBoxSide(graphicsContext, x2 - third, y1 + max((-adjbw1 * 2 + 1) / 3, 0),
+ x2, y2 - max((-adjbw2 * 2 + 1) / 3, 0),
+ s, c, SOLID, adjbw1bigthird, adjbw2bigthird);
+ 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 adjbw1bighalf = ((adjbw1 > 0) ? adjbw1 + 1 : adjbw1 - 1) / 2;
+ int adjbw2bighalf = ((adjbw2 > 0) ? adjbw2 + 1 : adjbw2 - 1) / 2;
+
+ switch (s) {
+ case BSTop:
+ drawLineForBoxSide(graphicsContext, x1 + max(-adjbw1, 0) / 2, y1, x2 - max(-adjbw2, 0) / 2, (y1 + y2 + 1) / 2,
+ s, c, s1, adjbw1bighalf, adjbw2bighalf);
+ drawLineForBoxSide(graphicsContext, x1 + max(adjbw1 + 1, 0) / 2, (y1 + y2 + 1) / 2, x2 - max(adjbw2 + 1, 0) / 2, y2,
+ s, c, s2, adjbw1 / 2, adjbw2 / 2);
+ break;
+ case BSLeft:
+ drawLineForBoxSide(graphicsContext, x1, y1 + max(-adjbw1, 0) / 2, (x1 + x2 + 1) / 2, y2 - max(-adjbw2, 0) / 2,
+ s, c, s1, adjbw1bighalf, adjbw2bighalf);
+ drawLineForBoxSide(graphicsContext, (x1 + x2 + 1) / 2, y1 + max(adjbw1 + 1, 0) / 2, x2, y2 - max(adjbw2 + 1, 0) / 2,
+ s, c, s2, adjbw1 / 2, adjbw2 / 2);
+ break;
+ case BSBottom:
+ drawLineForBoxSide(graphicsContext, x1 + max(adjbw1, 0) / 2, y1, x2 - max(adjbw2, 0) / 2, (y1 + y2 + 1) / 2,
+ s, c, s2, adjbw1bighalf, adjbw2bighalf);
+ drawLineForBoxSide(graphicsContext, x1 + max(-adjbw1 + 1, 0) / 2, (y1 + y2 + 1) / 2, x2 - max(-adjbw2 + 1, 0) / 2, y2,
+ s, c, s1, adjbw1 / 2, adjbw2 / 2);
+ break;
+ case BSRight:
+ drawLineForBoxSide(graphicsContext, x1, y1 + max(adjbw1, 0) / 2, (x1 + x2 + 1) / 2, y2 - max(adjbw2, 0) / 2,
+ s, c, s2, adjbw1bighalf, adjbw2bighalf);
+ drawLineForBoxSide(graphicsContext, (x1 + x2 + 1) / 2, y1 + max(-adjbw1 + 1, 0) / 2, x2, y2 - max(-adjbw2 + 1, 0) / 2,
+ s, c, s1, adjbw1 / 2, adjbw2 / 2);
+ break;
+ }
+ break;
+ }
+ case INSET:
+ if (s == BSTop || s == BSLeft)
+ c = c.dark();
+ // fall through
+ case OUTSET:
+ if (style == OUTSET && (s == BSBottom || s == BSRight))
+ c = c.dark();
+ // fall through
+ case SOLID: {
+ graphicsContext->setStrokeStyle(NoStroke);
+ graphicsContext->setFillColor(c, m_style->colorSpace());
+ ASSERT(x2 >= x1);
+ ASSERT(y2 >= y1);
+ if (!adjbw1 && !adjbw2) {
+ graphicsContext->drawRect(IntRect(x1, y1, x2 - x1, y2 - y1));
+ return;
+ }
+ FloatPoint quad[4];
+ switch (s) {
+ case BSTop:
+ quad[0] = FloatPoint(x1 + max(-adjbw1, 0), y1);
+ quad[1] = FloatPoint(x1 + max(adjbw1, 0), y2);
+ quad[2] = FloatPoint(x2 - max(adjbw2, 0), y2);
+ quad[3] = FloatPoint(x2 - max(-adjbw2, 0), y1);
+ break;
+ case BSBottom:
+ quad[0] = FloatPoint(x1 + max(adjbw1, 0), y1);
+ quad[1] = FloatPoint(x1 + max(-adjbw1, 0), y2);
+ quad[2] = FloatPoint(x2 - max(-adjbw2, 0), y2);
+ quad[3] = FloatPoint(x2 - max(adjbw2, 0), y1);
+ break;
+ case BSLeft:
+ quad[0] = FloatPoint(x1, y1 + max(-adjbw1, 0));
+ quad[1] = FloatPoint(x1, y2 - max(-adjbw2, 0));
+ quad[2] = FloatPoint(x2, y2 - max(adjbw2, 0));
+ quad[3] = FloatPoint(x2, y1 + max(adjbw1, 0));
+ break;
+ case BSRight:
+ quad[0] = FloatPoint(x1, y1 + max(adjbw1, 0));
+ quad[1] = FloatPoint(x1, y2 - max(adjbw2, 0));
+ quad[2] = FloatPoint(x2, y2 - max(-adjbw2, 0));
+ quad[3] = FloatPoint(x2, y1 + max(-adjbw1, 0));
+ break;
+ }
+ graphicsContext->drawConvexPolygon(4, quad);
+ break;
+ }
+ }
+}
+
+IntRect RenderObject::borderInnerRect(const IntRect& borderRect, unsigned short topWidth, unsigned short bottomWidth, unsigned short leftWidth, unsigned short rightWidth) const
+{
+ return IntRect(
+ borderRect.x() + leftWidth,
+ borderRect.y() + topWidth,
+ borderRect.width() - leftWidth - rightWidth,
+ borderRect.height() - topWidth - bottomWidth);
+}
+
+#if HAVE(PATH_BASED_BORDER_RADIUS_DRAWING)
+void RenderObject::drawBoxSideFromPath(GraphicsContext* graphicsContext, IntRect borderRect, Path borderPath,
+ float thickness, float drawThickness, BoxSide s, const RenderStyle* style,
+ Color c, EBorderStyle borderStyle)
+{
+ if (thickness <= 0)
+ return;
+
+ if (borderStyle == DOUBLE && thickness < 3)
+ borderStyle = SOLID;
+
+ switch (borderStyle) {
+ case BNONE:
+ case BHIDDEN:
+ return;
+ case DOTTED:
+ case DASHED: {
+ graphicsContext->setStrokeColor(c, style->colorSpace());
+
+ // The stroke is doubled here because the provided path is the
+ // outside edge of the border so half the stroke is clipped off.
+ // The extra multiplier is so that the clipping mask can antialias
+ // the edges to prevent jaggies.
+ graphicsContext->setStrokeThickness(drawThickness * 2 * 1.1f);
+ graphicsContext->setStrokeStyle(borderStyle == DASHED ? DashedStroke : DottedStroke);
+
+ // If the number of dashes that fit in the path is odd and non-integral then we
+ // will have an awkwardly-sized dash at the end of the path. To try to avoid that
+ // here, we simply make the whitespace dashes ever so slightly bigger.
+ // FIXME: This could be even better if we tried to manipulate the dash offset
+ // and possibly the whiteSpaceWidth to get the corners dash-symmetrical.
+ float patWidth = thickness * ((borderStyle == DASHED) ? 3.0f : 1.0f);
+ float whiteSpaceWidth = patWidth;
+ float numberOfDashes = borderPath.length() / patWidth;
+ bool evenNumberOfFullDashes = !((int)numberOfDashes % 2);
+ bool integralNumberOfDashes = !(numberOfDashes - (int)numberOfDashes);
+ if (!evenNumberOfFullDashes && !integralNumberOfDashes) {
+ float numberOfWhitespaceDashes = numberOfDashes / 2;
+ whiteSpaceWidth += (patWidth / numberOfWhitespaceDashes);
+ }
+
+ DashArray lineDash;
+ lineDash.append(patWidth);
+ lineDash.append(whiteSpaceWidth);
+ graphicsContext->setLineDash(lineDash, patWidth);
+ graphicsContext->addPath(borderPath);
+ graphicsContext->strokePath();
+ return;
+ }
+ case DOUBLE: {
+ int outerBorderTopWidth = style->borderTopWidth() / 3;
+ int outerBorderRightWidth = style->borderRightWidth() / 3;
+ int outerBorderBottomWidth = style->borderBottomWidth() / 3;
+ int outerBorderLeftWidth = style->borderLeftWidth() / 3;
+
+ int innerBorderTopWidth = style->borderTopWidth() * 2 / 3;
+ int innerBorderRightWidth = style->borderRightWidth() * 2 / 3;
+ int innerBorderBottomWidth = style->borderBottomWidth() * 2 / 3;
+ int innerBorderLeftWidth = style->borderLeftWidth() * 2 / 3;
+
+ // We need certain integer rounding results
+ if (style->borderTopWidth() % 3 == 2)
+ outerBorderTopWidth += 1;
+ if (style->borderRightWidth() % 3 == 2)
+ outerBorderRightWidth += 1;
+ if (style->borderBottomWidth() % 3 == 2)
+ outerBorderBottomWidth += 1;
+ if (style->borderLeftWidth() % 3 == 2)
+ outerBorderLeftWidth += 1;
+
+ if (style->borderTopWidth() % 3 == 1)
+ innerBorderTopWidth += 1;
+ if (style->borderRightWidth() % 3 == 1)
+ innerBorderRightWidth += 1;
+ if (style->borderBottomWidth() % 3 == 1)
+ innerBorderBottomWidth += 1;
+ if (style->borderLeftWidth() % 3 == 1)
+ innerBorderLeftWidth += 1;
+
+ // Get the inner border rects for both the outer border line and the inner border line
+ IntRect outerBorderInnerRect = borderInnerRect(borderRect, outerBorderTopWidth, outerBorderBottomWidth,
+ outerBorderLeftWidth, outerBorderRightWidth);
+ IntRect innerBorderInnerRect = borderInnerRect(borderRect, innerBorderTopWidth, innerBorderBottomWidth,
+ innerBorderLeftWidth, innerBorderRightWidth);
+
+ // Get the inner radii for the outer border line
+ IntSize outerBorderTopLeftInnerRadius, outerBorderTopRightInnerRadius, outerBorderBottomLeftInnerRadius,
+ outerBorderBottomRightInnerRadius;
+ style->getInnerBorderRadiiForRectWithBorderWidths(outerBorderInnerRect, outerBorderTopWidth, outerBorderBottomWidth,
+ outerBorderLeftWidth, outerBorderRightWidth, outerBorderTopLeftInnerRadius, outerBorderTopRightInnerRadius,
+ outerBorderBottomLeftInnerRadius, outerBorderBottomRightInnerRadius);
+
+ // Get the inner radii for the inner border line
+ IntSize innerBorderTopLeftInnerRadius, innerBorderTopRightInnerRadius, innerBorderBottomLeftInnerRadius,
+ innerBorderBottomRightInnerRadius;
+ style->getInnerBorderRadiiForRectWithBorderWidths(innerBorderInnerRect, innerBorderTopWidth, innerBorderBottomWidth,
+ innerBorderLeftWidth, innerBorderRightWidth, innerBorderTopLeftInnerRadius, innerBorderTopRightInnerRadius,
+ innerBorderBottomLeftInnerRadius, innerBorderBottomRightInnerRadius);
+
+ // Draw inner border line
+ graphicsContext->save();
+ graphicsContext->addRoundedRectClip(innerBorderInnerRect, innerBorderTopLeftInnerRadius,
+ innerBorderTopRightInnerRadius, innerBorderBottomLeftInnerRadius, innerBorderBottomRightInnerRadius);
+ drawBoxSideFromPath(graphicsContext, borderRect, borderPath, thickness, drawThickness, s, style, c, SOLID);
+ graphicsContext->restore();
+
+ // Draw outer border line
+ graphicsContext->save();
+ graphicsContext->clipOutRoundedRect(outerBorderInnerRect, outerBorderTopLeftInnerRadius,
+ outerBorderTopRightInnerRadius, outerBorderBottomLeftInnerRadius, outerBorderBottomRightInnerRadius);
+ drawBoxSideFromPath(graphicsContext, borderRect, borderPath, thickness, drawThickness, s, style, c, SOLID);
+ graphicsContext->restore();
+
+ return;
+ }
+ case RIDGE:
+ case GROOVE:
+ {
+ EBorderStyle s1;
+ EBorderStyle s2;
+ if (borderStyle == GROOVE) {
+ s1 = INSET;
+ s2 = OUTSET;
+ } else {
+ s1 = OUTSET;
+ s2 = INSET;
+ }
+
+ IntRect halfBorderRect = borderInnerRect(borderRect, style->borderLeftWidth() / 2, style->borderBottomWidth() / 2,
+ style->borderLeftWidth() / 2, style->borderRightWidth() / 2);
+
+ IntSize topLeftHalfRadius, topRightHalfRadius, bottomLeftHalfRadius, bottomRightHalfRadius;
+ style->getInnerBorderRadiiForRectWithBorderWidths(halfBorderRect, style->borderLeftWidth() / 2,
+ style->borderBottomWidth() / 2, style->borderLeftWidth() / 2, style->borderRightWidth() / 2,
+ topLeftHalfRadius, topRightHalfRadius, bottomLeftHalfRadius, bottomRightHalfRadius);
+
+ // Paint full border
+ drawBoxSideFromPath(graphicsContext, borderRect, borderPath, thickness, drawThickness, s, style, c, s1);
+
+ // Paint inner only
+ graphicsContext->save();
+ graphicsContext->addRoundedRectClip(halfBorderRect, topLeftHalfRadius, topRightHalfRadius,
+ bottomLeftHalfRadius, bottomRightHalfRadius);
+ drawBoxSideFromPath(graphicsContext, borderRect, borderPath, thickness, drawThickness, s, style, c, s2);
+ graphicsContext->restore();
+
+ return;
+ }
+ case INSET:
+ if (s == BSTop || s == BSLeft)
+ c = c.dark();
+ break;
+ case OUTSET:
+ if (s == BSBottom || s == BSRight)
+ c = c.dark();
+ break;
+ default:
+ break;
+ }
+
+ graphicsContext->setStrokeStyle(NoStroke);
+ graphicsContext->setFillColor(c, style->colorSpace());
+ graphicsContext->drawRect(borderRect);
+}
+#else
+void RenderObject::drawArcForBoxSide(GraphicsContext* graphicsContext, int x, int y, float thickness, IntSize radius,
+ int angleStart, int angleSpan, BoxSide s, Color c,
+ EBorderStyle style, bool firstCorner)
+{
+ // FIXME: This function should be removed when all ports implement GraphicsContext::clipConvexPolygon()!!
+ // At that time, everyone can use RenderObject::drawBoxSideFromPath() instead. This should happen soon.
+ 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(c, 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(c, 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 = c.dark();
+ else {
+ c2 = c;
+ c = c.dark();
+ }
+
+ graphicsContext->setStrokeStyle(SolidStroke);
+ graphicsContext->setStrokeColor(c, 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)
+ c = c.dark();
+ case OUTSET:
+ if (style == OUTSET && (s == BSBottom || s == BSRight))
+ c = c.dark();
+ case SOLID:
+ graphicsContext->setStrokeStyle(SolidStroke);
+ graphicsContext->setStrokeColor(c, m_style->colorSpace());
+ graphicsContext->setStrokeThickness(thickness);
+ graphicsContext->strokeArc(IntRect(x, y, radius.width() * 2, radius.height() * 2), angleStart, angleSpan);
+ break;
+ }
+}
+#endif
+
+void RenderObject::addPDFURLRect(GraphicsContext* context, const IntRect& 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), rect);
+}
+
+void RenderObject::paintOutline(GraphicsContext* graphicsContext, int tx, int ty, int w, int h)
+{
+ if (!hasOutline())
+ return;
+
+ RenderStyle* styleToUse = style();
+ int ow = styleToUse->outlineWidth();
+ EBorderStyle os = styleToUse->outlineStyle();
+
+ Color oc = styleToUse->visitedDependentColor(CSSPropertyOutlineColor);
+
+ int offset = styleToUse->outlineOffset();
+
+ if (styleToUse->outlineStyleIsAuto() || hasOutlineAnnotation()) {
+ if (!theme()->supportsFocusRing(styleToUse)) {
+ // Only paint the focus ring by hand if the theme isn't able to draw the focus ring.
+ Vector<IntRect> focusRingRects;
+ addFocusRingRects(focusRingRects, tx, ty);
+ if (styleToUse->outlineStyleIsAuto())
+ graphicsContext->drawFocusRing(focusRingRects, ow, offset, oc);
+ else
+ addPDFURLRect(graphicsContext, unionRect(focusRingRects));
+ }
+ }
+
+ if (styleToUse->outlineStyleIsAuto() || styleToUse->outlineStyle() == BNONE)
+ return;
+
+ tx -= offset;
+ ty -= offset;
+ w += 2 * offset;
+ h += 2 * offset;
+
+ if (h < 0 || w < 0)
+ return;
+
+ drawLineForBoxSide(graphicsContext, tx - ow, ty - ow, tx, ty + h + ow, BSLeft, oc, os, ow, ow);
+ drawLineForBoxSide(graphicsContext, tx - ow, ty - ow, tx + w + ow, ty, BSTop, oc, os, ow, ow);
+ drawLineForBoxSide(graphicsContext, tx + w, ty - ow, tx + w + ow, ty + h + ow, BSRight, oc, os, ow, ow);
+ drawLineForBoxSide(graphicsContext, tx - ow, ty + h, tx + w + ow, ty + h + ow, BSBottom, oc, os, ow, ow);
+}
+
+IntRect RenderObject::absoluteBoundingBoxRect(bool useTransforms)
+{
+ 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, absPos.x(), absPos.y());
+
+ size_t n = rects.size();
+ if (!n)
+ return IntRect();
+
+ IntRect result = rects[0];
+ for (size_t i = 1; i < n; ++i)
+ result.unite(rects[i]);
+ return result;
+}
+
+void RenderObject::absoluteFocusRingQuads(Vector<FloatQuad>& quads)
+{
+ Vector<IntRect> rects;
+ // FIXME: addFocusRingRects() needs to be passed this transform-unaware
+ // localToAbsolute() offset here because RenderInline::addFocusRingRects()
+ // implicitly assumes that. This doesn't work correctly with transformed
+ // descendants.
+ FloatPoint absolutePoint = localToAbsolute();
+ addFocusRingRects(rects, absolutePoint.x(), absolutePoint.y());
+ 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(IntRect& result)
+{
+ if (hasLayer())
+ result.unite(absoluteBoundingBoxRect());
+ for (RenderObject* current = firstChild(); current; current = current->nextSibling())
+ current->addAbsoluteRectForLayer(result);
+}
+
+IntRect RenderObject::paintingRootRect(IntRect& topLevelRect)
+{
+ IntRect result = absoluteBoundingBoxRect();
+ topLevelRect = result;
+ for (RenderObject* current = firstChild(); current; current = current->nextSibling())
+ current->addAbsoluteRectForLayer(result);
+ return result;
+}
+
+void RenderObject::paint(PaintInfo& /*paintInfo*/, int /*tx*/, int /*ty*/)
+{
+}
+
+RenderBoxModelObject* RenderObject::containerForRepaint() const
+{
+#if USE(ACCELERATED_COMPOSITING)
+ if (RenderView* v = view()) {
+ if (v->usesCompositing()) {
+ RenderLayer* compLayer = enclosingLayer()->enclosingCompositingLayer();
+ return compLayer ? compLayer->renderer() : 0;
+ }
+ }
+#endif
+ // Do root-relative repaint.
+ return 0;
+}
+
+void RenderObject::repaintUsingContainer(RenderBoxModelObject* repaintContainer, const IntRect& r, bool immediate)
+{
+ if (!repaintContainer) {
+ view()->repaintViewRectangle(r, immediate);
+ return;
+ }
+
+#if USE(ACCELERATED_COMPOSITING)
+ RenderView* v = view();
+ if (repaintContainer->isRenderView()) {
+ ASSERT(repaintContainer == v);
+ if (!v->hasLayer() || !v->layer()->isComposited() || v->layer()->backing()->paintingGoesToWindow()) {
+ v->repaintViewRectangle(r, 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)
+{
+ // Don't repaint if we're unrooted (note that view() still returns the view when unrooted)
+ RenderView* view;
+ if (!isRooted(&view))
+ return;
+
+ if (view->printing())
+ return; // Don't repaint if we're printing.
+
+ RenderBoxModelObject* repaintContainer = containerForRepaint();
+ repaintUsingContainer(repaintContainer ? repaintContainer : view, clippedOverflowRectForRepaint(repaintContainer), immediate);
+}
+
+void RenderObject::repaintRectangle(const IntRect& r, bool immediate)
+{
+ // Don't repaint if we're unrooted (note that view() still returns the view when unrooted)
+ RenderView* view;
+ if (!isRooted(&view))
+ return;
+
+ if (view->printing())
+ return; // Don't repaint if we're printing.
+
+ IntRect dirtyRect(r);
+
+ // FIXME: layoutDelta needs to be applied in parts before/after transforms and
+ // repaint containers. https://bugs.webkit.org/show_bug.cgi?id=23308
+ dirtyRect.move(view->layoutDelta());
+
+ RenderBoxModelObject* repaintContainer = containerForRepaint();
+ computeRectForRepaint(repaintContainer, dirtyRect);
+ repaintUsingContainer(repaintContainer ? repaintContainer : view, dirtyRect, immediate);
+}
+
+bool RenderObject::repaintAfterLayoutIfNeeded(RenderBoxModelObject* repaintContainer, const IntRect& oldBounds, const IntRect& oldOutlineBox, const IntRect* newBoundsPtr, const IntRect* newOutlineBoxRectPtr)
+{
+ RenderView* v = view();
+ if (v->printing())
+ return false; // Don't repaint if we're printing.
+
+ // This ASSERT fails due to animations. See https://bugs.webkit.org/show_bug.cgi?id=37048
+ // ASSERT(!newBoundsPtr || *newBoundsPtr == clippedOverflowRectForRepaint(repaintContainer));
+ IntRect newBounds = newBoundsPtr ? *newBoundsPtr : clippedOverflowRectForRepaint(repaintContainer);
+ IntRect newOutlineBox;
+
+ bool fullRepaint = selfNeedsLayout();
+ // Presumably a background or a border exists if border-fit:lines was specified.
+ if (!fullRepaint && style()->borderFit() == BorderFitLines)
+ fullRepaint = true;
+ if (!fullRepaint) {
+ // This ASSERT fails due to animations. See https://bugs.webkit.org/show_bug.cgi?id=37048
+ // ASSERT(!newOutlineBoxRectPtr || *newOutlineBoxRectPtr == outlineBoundsForRepaint(repaintContainer));
+ 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;
+
+ int deltaLeft = newBounds.x() - oldBounds.x();
+ if (deltaLeft > 0)
+ repaintUsingContainer(repaintContainer, IntRect(oldBounds.x(), oldBounds.y(), deltaLeft, oldBounds.height()));
+ else if (deltaLeft < 0)
+ repaintUsingContainer(repaintContainer, IntRect(newBounds.x(), newBounds.y(), -deltaLeft, newBounds.height()));
+
+ int deltaRight = newBounds.right() - oldBounds.right();
+ if (deltaRight > 0)
+ repaintUsingContainer(repaintContainer, IntRect(oldBounds.right(), newBounds.y(), deltaRight, newBounds.height()));
+ else if (deltaRight < 0)
+ repaintUsingContainer(repaintContainer, IntRect(newBounds.right(), oldBounds.y(), -deltaRight, oldBounds.height()));
+
+ int deltaTop = newBounds.y() - oldBounds.y();
+ if (deltaTop > 0)
+ repaintUsingContainer(repaintContainer, IntRect(oldBounds.x(), oldBounds.y(), oldBounds.width(), deltaTop));
+ else if (deltaTop < 0)
+ repaintUsingContainer(repaintContainer, IntRect(newBounds.x(), newBounds.y(), newBounds.width(), -deltaTop));
+
+ int deltaBottom = newBounds.bottom() - oldBounds.bottom();
+ if (deltaBottom > 0)
+ repaintUsingContainer(repaintContainer, IntRect(newBounds.x(), oldBounds.bottom(), newBounds.width(), deltaBottom));
+ else if (deltaBottom < 0)
+ repaintUsingContainer(repaintContainer, IntRect(oldBounds.x(), newBounds.bottom(), oldBounds.width(), -deltaBottom));
+
+ if (newOutlineBox == oldOutlineBox)
+ return false;
+
+ // We didn't move, but we did change size. Invalidate the delta, which will consist of possibly
+ // two rectangles (but typically only one).
+ RenderStyle* outlineStyle = outlineStyleForRepaint();
+ int ow = outlineStyle->outlineSize();
+ int width = abs(newOutlineBox.width() - oldOutlineBox.width());
+ if (width) {
+ int shadowLeft;
+ int shadowRight;
+ style()->getBoxShadowHorizontalExtent(shadowLeft, shadowRight);
+
+ int borderRight = isBox() ? toRenderBox(this)->borderRight() : 0;
+ int borderWidth = max(-outlineStyle->outlineOffset(), max(borderRight, max(style()->borderTopRightRadius().width(), style()->borderBottomRightRadius().width()))) + max(ow, shadowRight);
+ IntRect rightRect(newOutlineBox.x() + min(newOutlineBox.width(), oldOutlineBox.width()) - borderWidth,
+ newOutlineBox.y(),
+ width + borderWidth,
+ max(newOutlineBox.height(), oldOutlineBox.height()));
+ int right = min(newBounds.right(), oldBounds.right());
+ if (rightRect.x() < right) {
+ rightRect.setWidth(min(rightRect.width(), right - rightRect.x()));
+ repaintUsingContainer(repaintContainer, rightRect);
+ }
+ }
+ int height = abs(newOutlineBox.height() - oldOutlineBox.height());
+ if (height) {
+ int shadowTop;
+ int shadowBottom;
+ style()->getBoxShadowVerticalExtent(shadowTop, shadowBottom);
+
+ int borderBottom = isBox() ? toRenderBox(this)->borderBottom() : 0;
+ int borderHeight = max(-outlineStyle->outlineOffset(), max(borderBottom, max(style()->borderBottomLeftRadius().height(), style()->borderBottomRightRadius().height()))) + max(ow, shadowBottom);
+ IntRect bottomRect(newOutlineBox.x(),
+ min(newOutlineBox.bottom(), oldOutlineBox.bottom()) - borderHeight,
+ max(newOutlineBox.width(), oldOutlineBox.width()),
+ height + borderHeight);
+ int bottom = min(newBounds.bottom(), oldBounds.bottom());
+ if (bottomRect.y() < bottom) {
+ bottomRect.setHeight(min(bottomRect.height(), bottom - bottomRect.y()));
+ repaintUsingContainer(repaintContainer, bottomRect);
+ }
+ }
+ return false;
+}
+
+void RenderObject::repaintDuringLayoutIfMoved(const IntRect&)
+{
+}
+
+void RenderObject::repaintOverhangingFloats(bool)
+{
+}
+
+bool RenderObject::checkForRepaintDuringLayout() const
+{
+ // FIXME: <https://bugs.webkit.org/show_bug.cgi?id=20885> It is probably safe to also require
+ // m_everHadLayout. Currently, only RenderBlock::layoutBlock() adds this condition. See also
+ // <https://bugs.webkit.org/show_bug.cgi?id=15129>.
+ return !document()->view()->needsFullRepaint() && !hasLayer();
+}
+
+IntRect RenderObject::rectWithOutlineForRepaint(RenderBoxModelObject* repaintContainer, int outlineWidth)
+{
+ IntRect r(clippedOverflowRectForRepaint(repaintContainer));
+ r.inflate(outlineWidth);
+ return r;
+}
+
+IntRect RenderObject::clippedOverflowRectForRepaint(RenderBoxModelObject*)
+{
+ ASSERT_NOT_REACHED();
+ return IntRect();
+}
+
+void RenderObject::computeRectForRepaint(RenderBoxModelObject* repaintContainer, IntRect& rect, bool fixed)
+{
+ if (repaintContainer == this)
+ return;
+
+ if (RenderObject* o = parent()) {
+ if (o->isBlockFlow()) {
+ RenderBlock* cb = toRenderBlock(o);
+ if (cb->hasColumns())
+ cb->adjustRectForColumns(rect);
+ }
+
+ if (o->hasOverflowClip()) {
+ // o->height() is inaccurate if we're in the middle of a layout of |o|, so use the
+ // layer's size instead. Even if the layer's size is wrong, the layer itself will repaint
+ // anyway if its size does change.
+ RenderBox* boxParent = toRenderBox(o);
+
+ IntRect repaintRect(rect);
+ repaintRect.move(-boxParent->layer()->scrolledContentOffset()); // For overflow:auto/scroll/hidden.
+
+ IntRect boxRect(0, 0, boxParent->layer()->width(), boxParent->layer()->height());
+ rect = intersection(repaintRect, boxRect);
+ if (rect.isEmpty())
+ return;
+ }
+
+ o->computeRectForRepaint(repaintContainer, rect, fixed);
+ }
+}
+
+void RenderObject::dirtyLinesFromChangedChild(RenderObject*)
+{
+}
+
+#ifndef NDEBUG
+
+void RenderObject::showTreeForThis() const
+{
+ if (node())
+ node()->showTreeForThis();
+}
+
+void RenderObject::showRenderObject() const
+{
+ showRenderObject(0);
+}
+
+void RenderObject::showRenderObject(int printedCharacters) const
+{
+ // As this function is intended to be used when debugging, the
+ // this pointer may be 0.
+ if (!this) {
+ fputs("(null)\n", stderr);
+ return;
+ }
+
+ printedCharacters += fprintf(stderr, "%s %p", renderName(), this);
+
+ if (node()) {
+ if (printedCharacters)
+ for (; printedCharacters < 39; 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::selectionForegroundColor() const
+{
+ Color color;
+ if (style()->userSelect() == SELECT_NONE)
+ return color;
+
+ if (RefPtr<RenderStyle> pseudoStyle = getUncachedPseudoStyle(SELECTION)) {
+ color = pseudoStyle->visitedDependentColor(CSSPropertyWebkitTextFillColor);
+ if (!color.isValid())
+ color = pseudoStyle->visitedDependentColor(CSSPropertyColor);
+ } else
+ color = frame()->selection()->isFocusedAndActive() ?
+ theme()->activeSelectionForegroundColor() :
+ theme()->inactiveSelectionForegroundColor();
+
+ return color;
+}
+
+#if ENABLE(DRAG_SUPPORT)
+Node* RenderObject::draggableNode(bool dhtmlOK, bool uaOK, int x, int y, bool& dhtmlWillDrag) const
+{
+ if (!dhtmlOK && !uaOK)
+ return 0;
+
+ for (const RenderObject* curr = this; curr; curr = curr->parent()) {
+ Node* elt = curr->node();
+ if (elt && elt->nodeType() == Node::TEXT_NODE) {
+ // Since there's no way for the author to address the -webkit-user-drag style for a text node,
+ // we use our own judgement.
+ if (uaOK && view()->frameView()->frame()->eventHandler()->shouldDragAutoNode(curr->node(), IntPoint(x, y))) {
+ dhtmlWillDrag = false;
+ return curr->node();
+ }
+ if (elt->canStartSelection())
+ // In this case we have a click in the unselected portion of text. If this text is
+ // selectable, we want to start the selection process instead of looking for a parent
+ // to try to drag.
+ return 0;
+ } else {
+ EUserDrag dragMode = curr->style()->userDrag();
+ if (dhtmlOK && dragMode == DRAG_ELEMENT) {
+ dhtmlWillDrag = true;
+ return curr->node();
+ }
+ if (uaOK && dragMode == DRAG_AUTO
+ && view()->frameView()->frame()->eventHandler()->shouldDragAutoNode(curr->node(), IntPoint(x, y))) {
+ dhtmlWillDrag = false;
+ return curr->node();
+ }
+ }
+ }
+ return 0;
+}
+#endif // ENABLE(DRAG_SUPPORT)
+
+void RenderObject::selectionStartEnd(int& spos, int& epos) const
+{
+ view()->selectionStartEnd(spos, epos);
+}
+
+void RenderObject::handleDynamicFloatPositionChange()
+{
+ // We have gone from not affecting the inline status of the parent flow to suddenly
+ // having an impact. See if there is a mismatch between the parent flow's
+ // childrenInline() state and our state.
+ setInline(style()->isDisplayInlineType());
+ if (isInline() != parent()->childrenInline()) {
+ if (!isInline())
+ toRenderBoxModelObject(parent())->childBecameNonInline(this);
+ else {
+ // An anonymous block must be made to wrap this inline.
+ 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 transform changed, and we are not composited, need to do a layout.
+ if (contextSensitiveProperties & ContextSensitivePropertyTransform) {
+ // Text nodes share style with their parents but transforms don't apply to them,
+ // hence the !isText() check.
+ // FIXME: when transforms are taken into account for overflow, we will need to do a layout.
+ if (!isText() && (!hasLayer() || !toRenderBoxModelObject(this)->layer()->isComposited()))
+ diff = StyleDifferenceLayout;
+ else if (diff < StyleDifferenceRecompositeLayer)
+ diff = StyleDifferenceRecompositeLayer;
+ }
+
+ // If opacity changed, and we are not composited, need to repaint (also
+ // ignoring text nodes)
+ if (contextSensitiveProperties & ContextSensitivePropertyOpacity) {
+ if (!isText() && (!hasLayer() || !toRenderBoxModelObject(this)->layer()->isComposited()))
+ diff = StyleDifferenceRepaintLayer;
+ else if (diff < StyleDifferenceRecompositeLayer)
+ diff = StyleDifferenceRecompositeLayer;
+ }
+
+ // The answer to requiresLayer() for plugins and iframes can change outside of the style system,
+ // since it depends on whether we decide to composite these elements. When the layer status of
+ // one of these elements changes, we need to force a layout.
+ if (diff == StyleDifferenceEqual && style() && isBoxModelObject()) {
+ if (hasLayer() != toRenderBoxModelObject(this)->requiresLayer())
+ diff = StyleDifferenceLayout;
+ }
+#else
+ UNUSED_PARAM(contextSensitiveProperties);
+#endif
+
+ // If we have no layer(), just treat a RepaintLayer hint as a normal Repaint.
+ if (diff == StyleDifferenceRepaintLayer && !hasLayer())
+ diff = StyleDifferenceRepaint;
+
+ return diff;
+}
+
+void RenderObject::setStyle(PassRefPtr<RenderStyle> style)
+{
+ if (m_style == style)
+ 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);
+
+ // We need to ensure that view->maximalOutlineSize() is valid for any repaints that happen
+ // during styleDidChange (it's used by clippedOverflowRectForRepaint()).
+ if (m_style->outlineWidth() > 0 && m_style->outlineSize() > maximalOutlineSize(PaintPhaseOutline))
+ toRenderView(document()->renderer())->setMaximalOutlineSize(m_style->outlineSize());
+
+ styleDidChange(diff, oldStyle.get());
+
+ if (!m_parent || isText())
+ return;
+
+ // Now that the layer (if any) has been updated, we need to adjust the diff again,
+ // check whether we should layout now, and decide if we need to repaint.
+ StyleDifference updatedDiff = adjustStyleDifference(diff, contextSensitiveProperties);
+
+ if (diff <= StyleDifferenceLayoutPositionedMovementOnly) {
+ if (updatedDiff == StyleDifferenceLayout)
+ setNeedsLayoutAndPrefWidthsRecalc();
+ else if (updatedDiff == StyleDifferenceLayoutPositionedMovementOnly)
+ setNeedsPositionedMovementLayout();
+ }
+
+ if (updatedDiff == StyleDifferenceRepaintLayer || updatedDiff == StyleDifferenceRepaint) {
+ // Do a repaint with the new style now, e.g., for example if we go from
+ // not having an outline to having an outline.
+ repaint();
+ }
+}
+
+void RenderObject::setStyleInternal(PassRefPtr<RenderStyle> style)
+{
+ m_style = style;
+}
+
+void RenderObject::styleWillChange(StyleDifference diff, const RenderStyle* newStyle)
+{
+ if (m_style) {
+ // If our z-index changes value or our visibility changes,
+ // we need to dirty our stacking context's z-order list.
+ 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);
+
+ // Keep layer hierarchy visibility bits up to date if visibility changes.
+ 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()))
+ // For changes in float styles, we need to conceivably remove ourselves
+ // from the floating objects list.
+ toRenderBox(this)->removeFloatingOrPositionedChildFromBlockLists();
+ else if (isPositioned() && (m_style->position() != newStyle->position()))
+ // For changes in positioning styles, we need to conceivably remove ourselves
+ // from the positioned objects list.
+ toRenderBox(this)->removeFloatingOrPositionedChildFromBlockLists();
+
+ s_affectsParentBlock = isFloatingOrPositioned() &&
+ (!newStyle->isFloating() && newStyle->position() != AbsolutePosition && newStyle->position() != FixedPosition)
+ && parent() && (parent()->isBlockFlow() || parent()->isRenderInline());
+
+ // reset style flags
+ if (diff == StyleDifferenceLayout || diff == StyleDifferenceLayoutPositionedMovementOnly) {
+ m_floating = false;
+ m_positioned = false;
+ m_relPositioned = false;
+ }
+ m_paintBackground = false;
+ m_hasOverflowClip = false;
+ m_hasTransform = false;
+ m_hasReflection = false;
+ } else
+ s_affectsParentBlock = false;
+
+ if (view()->frameView()) {
+ bool shouldBlitOnFixedBackgroundImage = false;
+#if ENABLE(FAST_MOBILE_SCROLLING)
+ // On low-powered/mobile devices, preventing blitting on a scroll can cause noticeable delays
+ // when scrolling a page with a fixed background image. As an optimization, assuming there are
+ // no fixed positoned elements on the page, we can acclerate scrolling (via blitting) if we
+ // ignore the CSS property "background-attachment: fixed".
+ 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();
+ }
+ }
+}
+
+void RenderObject::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
+{
+ if (s_affectsParentBlock)
+ handleDynamicFloatPositionChange();
+
+ if (!m_parent)
+ return;
+
+ if (diff == StyleDifferenceLayout) {
+ RenderCounter::rendererStyleChanged(this, oldStyle, m_style.get());
+
+ // If the object already needs layout, then setNeedsLayout won't do
+ // any work. But if the containing block has changed, then we may need
+ // to mark the new containing blocks for layout. The change that can
+ // directly affect the containing block of this object is a change to
+ // the position style.
+ if (m_needsLayout && oldStyle->position() != m_style->position())
+ markContainingBlocksForLayout();
+
+ setNeedsLayoutAndPrefWidthsRecalc();
+ } else if (diff == StyleDifferenceLayoutPositionedMovementOnly)
+ setNeedsPositionedMovementLayout();
+
+ // Don't check for repaint here; we need to wait until the layer has been
+ // updated by subclasses before we know if we have to repaint (in setStyle()).
+}
+
+void RenderObject::updateFillImages(const FillLayer* oldLayers, const FillLayer* newLayers)
+{
+ // Optimize the common case
+ if (oldLayers && !oldLayers->next() && newLayers && !newLayers->next() && (oldLayers->image() == newLayers->image()))
+ return;
+
+ // Go through the new layers and addClients first, to avoid removing all clients of an image.
+ 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);
+ }
+}
+
+IntRect RenderObject::viewRect() const
+{
+ return view()->viewRect();
+}
+
+FloatPoint RenderObject::localToAbsolute(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(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) const
+{
+ if (repaintContainer == this)
+ return;
+
+ RenderObject* o = parent();
+ if (!o)
+ return;
+
+ IntSize columnOffset;
+ o->adjustForColumns(columnOffset, roundedIntPoint(transformState.mappedPoint()));
+ if (!columnOffset.isZero())
+ transformState.move(columnOffset);
+
+ if (o->hasOverflowClip())
+ transformState.move(-toRenderBox(o)->layer()->scrolledContentOffset());
+
+ o->mapLocalToContainer(repaintContainer, fixed, useTransforms, transformState);
+}
+
+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)->layer()->scrolledContentOffset());
+ }
+}
+
+bool RenderObject::shouldUseTransformFromContainer(const RenderObject* containerObject) const
+{
+#if ENABLE(3D_RENDERING)
+ // hasTransform() indicates whether the object has transform, transform-style or perspective. We just care about transform,
+ // so check the layer's transform directly.
+ return (hasLayer() && toRenderBoxModelObject(this)->layer()->transform()) || (containerObject && containerObject->style()->hasPerspective());
+#else
+ UNUSED_PARAM(containerObject);
+ return hasTransform();
+#endif
+}
+
+void RenderObject::getTransformFromContainer(const RenderObject* containerObject, const IntSize& offsetInContainer, TransformationMatrix& transform) const
+{
+ transform.makeIdentity();
+ transform.translate(offsetInContainer.width(), offsetInContainer.height());
+ RenderLayer* layer;
+ if (hasLayer() && (layer = toRenderBoxModelObject(this)->layer()) && layer->transform())
+ transform.multLeft(layer->currentTransform());
+
+#if ENABLE(3D_RENDERING)
+ if (containerObject && containerObject->hasLayer() && containerObject->style()->hasPerspective()) {
+ // Perpsective on the container affects us, so we have to factor it in here.
+ ASSERT(containerObject->hasLayer());
+ FloatPoint perspectiveOrigin = toRenderBox(containerObject)->layer()->perspectiveOrigin();
+
+ TransformationMatrix perspectiveMatrix;
+ perspectiveMatrix.applyPerspective(containerObject->style()->perspective());
+
+ transform.translateRight3d(-perspectiveOrigin.x(), -perspectiveOrigin.y(), 0);
+ transform.multiply(perspectiveMatrix);
+ transform.translateRight3d(perspectiveOrigin.x(), perspectiveOrigin.y(), 0);
+ }
+#else
+ UNUSED_PARAM(containerObject);
+#endif
+}
+
+FloatQuad RenderObject::localToContainerQuad(const FloatQuad& localQuad, RenderBoxModelObject* repaintContainer, bool fixed) const
+{
+ // Track the point at the center of the quad's bounding box. As mapLocalToContainer() calls offsetFromContainer(),
+ // it will use that point as the reference point to decide which column's transform to apply in multiple-column blocks.
+ TransformState transformState(TransformState::ApplyTransformDirection, localQuad.boundingBox().center(), &localQuad);
+ mapLocalToContainer(repaintContainer, fixed, true, transformState);
+ transformState.flatten();
+
+ return transformState.lastPlanarQuad();
+}
+
+IntSize RenderObject::offsetFromContainer(RenderObject* o, const IntPoint& point) const
+{
+ ASSERT(o == container());
+
+ IntSize offset;
+
+ o->adjustForColumns(offset, point);
+
+ if (o->hasOverflowClip())
+ offset -= toRenderBox(o)->layer()->scrolledContentOffset();
+
+ return offset;
+}
+
+IntSize RenderObject::offsetFromAncestorContainer(RenderObject* container) const
+{
+ IntSize offset;
+ IntPoint referencePoint;
+ const RenderObject* currContainer = this;
+ do {
+ RenderObject* nextContainer = currContainer->container();
+ ASSERT(nextContainer); // This means we reached the top without finding container.
+ if (!nextContainer)
+ break;
+ ASSERT(!currContainer->hasTransform());
+ IntSize currentOffset = currContainer->offsetFromContainer(nextContainer, referencePoint);
+ offset += currentOffset;
+ referencePoint.move(currentOffset);
+ currContainer = nextContainer;
+ } while (currContainer != container);
+
+ return offset;
+}
+
+IntRect RenderObject::localCaretRect(InlineBox*, int, int* extraWidthToEndOfLine)
+{
+ if (extraWidthToEndOfLine)
+ *extraWidthToEndOfLine = 0;
+
+ return IntRect();
+}
+
+RenderView* RenderObject::view() const
+{
+ return toRenderView(document()->renderer());
+}
+
+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;
+}
+
+bool RenderObject::hasOutlineAnnotation() const
+{
+ return node() && node()->isLink() && document()->printing();
+}
+
+RenderObject* RenderObject::container(RenderBoxModelObject* repaintContainer, bool* repaintContainerSkipped) const
+{
+ if (repaintContainerSkipped)
+ *repaintContainerSkipped = false;
+
+ // This method is extremely similar to containingBlock(), but with a few notable
+ // exceptions.
+ // (1) It can be used on orphaned subtrees, i.e., it can be called safely even when
+ // the object is not part of the primary document subtree yet.
+ // (2) For normal flow elements, it just returns the parent.
+ // (3) For absolute positioned elements, it will return a relative positioned inline.
+ // containingBlock() simply skips relpositioned inlines and lets an enclosing block handle
+ // the layout of the positioned object. This does mean that calcAbsoluteHorizontal and
+ // calcAbsoluteVertical have to use container().
+ RenderObject* o = parent();
+
+ if (isText())
+ return o;
+
+ EPosition pos = m_style->position();
+ if (pos == FixedPosition) {
+ // container() can be called on an object that is not in the
+ // tree yet. We don't call view() since it will assert if it
+ // can't get back to the canvas. Instead we just walk as high up
+ // as we can. If we're in the tree, we'll get the root. If we
+ // aren't we'll get the root of our little subtree (most likely
+ // we'll just return 0).
+ // FIXME: The definition of view() has changed to not crawl up the render tree. It might
+ // be safe now to use it.
+ while (o && o->parent() && !(o->hasTransform() && o->isRenderBlock())) {
+ if (repaintContainerSkipped && o == repaintContainer)
+ *repaintContainerSkipped = true;
+ o = o->parent();
+ }
+ } else if (pos == AbsolutePosition) {
+ // Same goes here. We technically just want our containing block, but
+ // we may not have one if we're part of an uninstalled subtree. We'll
+ // climb as high as we can though.
+ while (o && o->style()->position() == StaticPosition && !o->isRenderView() && !(o->hasTransform() && o->isRenderBlock())) {
+ if (repaintContainerSkipped && o == repaintContainer)
+ *repaintContainerSkipped = true;
+ o = o->parent();
+ }
+ }
+
+ return o;
+}
+
+bool RenderObject::isSelectionBorder() const
+{
+ SelectionState st = selectionState();
+ return st == SelectionStart || st == SelectionEnd || st == SelectionBoth;
+}
+
+void RenderObject::destroy()
+{
+ // Destroy any leftover anonymous children.
+ RenderObjectChildList* children = virtualChildren();
+ if (children)
+ children->destroyLeftoverChildren();
+
+ // If this renderer is being autoscrolled, stop the autoscroll timer
+
+ // FIXME: RenderObject::destroy should not get called with a renderer whose document
+ // has a null frame, so we assert this. However, we don't want release builds to crash which is why we
+ // check that the frame is not null.
+ ASSERT(frame());
+ if (frame() && frame()->eventHandler()->autoscrollRenderer() == this)
+ frame()->eventHandler()->stopAutoscrollTimer(true);
+
+ if (m_hasCounterNodeMap)
+ RenderCounter::destroyCounterNodes(this);
+
+ if (AXObjectCache::accessibilityEnabled()) {
+ document()->axObjectCache()->childrenChanged(this->parent());
+ document()->axObjectCache()->remove(this);
+ }
+ animation()->cancelAnimations(this);
+
+ // By default no ref-counting. RenderWidget::destroy() doesn't call
+ // this function because it needs to do ref-counting. If anything
+ // in this function changes, be sure to fix RenderWidget::destroy() as well.
+
+ remove();
+
+ // FIXME: Would like to do this in RenderBoxModelObject, but the timing is so complicated that this can't easily
+ // be moved into RenderBoxModelObject::destroy.
+ if (hasLayer()) {
+ setHasLayer(false);
+ toRenderBoxModelObject(this)->destroyLayer();
+ }
+ 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
+
+ // Recover the size left there for us by operator delete and free the memory.
+ arena->free(*(size_t*)base, base);
+}
+
+VisiblePosition RenderObject::positionForCoordinates(int x, int y)
+{
+ return positionForPoint(IntPoint(x, y));
+}
+
+VisiblePosition RenderObject::positionForPoint(const IntPoint&)
+{
+ return createVisiblePosition(caretMinOffset(), DOWNSTREAM);
+}
+
+void RenderObject::updateDragState(bool dragOn)
+{
+ bool valueChanged = (dragOn != m_isDragging);
+ m_isDragging = dragOn;
+ if (valueChanged && style()->affectedByDragRules())
+ node()->setNeedsStyleRecalc();
+ for (RenderObject* curr = firstChild(); curr; curr = curr->nextSibling())
+ curr->updateDragState(dragOn);
+}
+
+bool RenderObject::hitTest(const HitTestRequest& request, HitTestResult& result, const IntPoint& point, int tx, int ty, HitTestFilter hitTestFilter)
+{
+ bool inside = false;
+ if (hitTestFilter != HitTestSelf) {
+ // First test the foreground layer (lines and inlines).
+ inside = nodeAtPoint(request, result, point.x(), point.y(), tx, ty, HitTestForeground);
+
+ // Test floats next.
+ if (!inside)
+ inside = nodeAtPoint(request, result, point.x(), point.y(), tx, ty, HitTestFloat);
+
+ // Finally test to see if the mouse is in the background (within a child block's background).
+ if (!inside)
+ inside = nodeAtPoint(request, result, point.x(), point.y(), tx, ty, HitTestChildBlockBackgrounds);
+ }
+
+ // See if the mouse is inside us but not any of our descendants
+ if (hitTestFilter != HitTestDescendants && !inside)
+ inside = nodeAtPoint(request, result, point.x(), point.y(), tx, ty, HitTestBlockBackground);
+
+ return inside;
+}
+
+void RenderObject::updateHitTestResult(HitTestResult& result, const IntPoint& 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&, int /*x*/, int /*y*/, int /*tx*/, int /*ty*/, HitTestAction)
+{
+ return false;
+}
+
+int RenderObject::lineHeight(bool firstLine, bool /*isRootLineBox*/) const
+{
+ return style(firstLine)->computedLineHeight();
+}
+
+int RenderObject::baselinePosition(bool firstLine, bool isRootLineBox) const
+{
+ const Font& f = style(firstLine)->font();
+ return f.ascent() + (lineHeight(firstLine, isRootLineBox) - f.height()) / 2;
+}
+
+void RenderObject::scheduleRelayout()
+{
+ if (isRenderView()) {
+ FrameView* view = toRenderView(this)->frameView();
+ if (view)
+ view->scheduleRelayout();
+ } else if (parent()) {
+ FrameView* v = view() ? view()->frameView() : 0;
+ if (v)
+ v->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()) {
+ // A first-line style is in effect. Cache a first-line style for ourselves.
+ 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;
+
+ RefPtr<RenderStyle> result;
+ if (pseudo == FIRST_LINE_INHERITED) {
+ result = document()->styleSelector()->styleForElement(static_cast<Element*>(n), parentStyle, false);
+ result->setStyleType(FIRST_LINE_INHERITED);
+ } else
+ result = document()->styleSelector()->pseudoStyleForElement(pseudo, static_cast<Element*>(n), parentStyle);
+ return result.release();
+}
+
+static Color decorationColor(RenderObject* renderer)
+{
+ Color result;
+ if (renderer->style()->textStrokeWidth() > 0) {
+ // Prefer stroke color if possible but not if it's fully transparent.
+ 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);
+ }
+ }
+ 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 we bailed out, use the element we bailed out at (typically a <font> or <a> element).
+ 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)
+{
+ // Convert the style regions to absolute coordinates.
+ 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];
+
+ int w = box->width();
+ int h = box->height();
+
+ DashboardRegionValue region;
+ region.label = styleRegion.label;
+ region.bounds = IntRect(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());
+
+ if (frame()) {
+ float pageScaleFactor = frame()->page()->chrome()->scaleFactor();
+ if (pageScaleFactor != 1.0f) {
+ region.bounds.scale(pageScaleFactor);
+ region.clip.scale(pageScaleFactor);
+ }
+ }
+
+ regions.append(region);
+ }
+}
+
+void RenderObject::collectDashboardRegions(Vector<DashboardRegionValue>& regions)
+{
+ // RenderTexts don't have their own style, they just use their parent's style,
+ // so we don't want to include them.
+ if (isText())
+ return;
+
+ addDashboardRegions(regions);
+ for (RenderObject* curr = firstChild(); curr; curr = curr->nextSibling())
+ curr->collectDashboardRegions(regions);
+}
+#endif
+
+bool RenderObject::willRenderImage(CachedImage*)
+{
+ // Without visibility we won't render (and therefore don't care about animation).
+ if (style()->visibility() != VISIBLE)
+ return false;
+
+ // If we're not in a window (i.e., we're dormant from being put in the b/f cache or in a background tab)
+ // then we don't want to render either.
+ 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;
+}
+
+unsigned RenderObject::caretMaxRenderedOffset() const
+{
+ 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(IntRect& rect) const
+{
+ int outlineSize = outlineStyleForRepaint()->outlineSize();
+ if (const ShadowData* boxShadow = style()->boxShadow()) {
+ int shadowLeft = 0;
+ int shadowRight = 0;
+ int shadowTop = 0;
+ int shadowBottom = 0;
+
+ do {
+ if (boxShadow->style() == Normal) {
+ shadowLeft = min(boxShadow->x() - boxShadow->blur() - boxShadow->spread() - outlineSize, shadowLeft);
+ shadowRight = max(boxShadow->x() + boxShadow->blur() + boxShadow->spread() + outlineSize, shadowRight);
+ shadowTop = min(boxShadow->y() - boxShadow->blur() - boxShadow->spread() - outlineSize, shadowTop);
+ shadowBottom = max(boxShadow->y() + boxShadow->blur() + boxShadow->spread() + outlineSize, shadowBottom);
+ }
+
+ boxShadow = boxShadow->next();
+ } while (boxShadow);
+
+ rect.move(shadowLeft, shadowTop);
+ rect.setWidth(rect.width() - shadowLeft + shadowRight);
+ rect.setHeight(rect.height() - shadowTop + shadowBottom);
+ } else
+ 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 any of the following holds true return null and stop this algorithm:
+ // A is the root element.
+ // A is the HTML body element.
+ // The computed value of the position property for element A is fixed.
+ if (isRoot() || isBody() || (isPositioned() && style()->position() == FixedPosition))
+ return 0;
+
+ // If A is an area HTML element which has a map HTML element somewhere in the ancestor
+ // chain return the nearest ancestor map HTML element and stop this algorithm.
+ // FIXME: Implement!
+
+ // Return the nearest ancestor element of A for which at least one of the following is
+ // true and stop this algorithm if such an ancestor is found:
+ // * The computed value of the position property is not static.
+ // * It is the HTML body element.
+ // * The computed value of the position property of A is static and the ancestor
+ // is one of the following HTML elements: td, th, or table.
+ // * Our own extension: if there is a difference in the effective zoom
+ 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) {
+ bool isTableElement = element->hasTagName(tableTag) ||
+ element->hasTagName(tdTag) ||
+ element->hasTagName(thTag);
+
+#if ENABLE(WML)
+ if (!isTableElement && element->isWMLElement())
+ isTableElement = element->hasTagName(WMLNames::tableTag) ||
+ element->hasTagName(WMLNames::tdTag);
+#endif
+
+ if (isTableElement)
+ 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 this is a non-anonymous renderer in an editable area, then it's simple.
+ if (Node* node = this->node()) {
+ if (!node->isContentEditable()) {
+ // If it can be found, we prefer a visually equivalent position that is editable.
+ Position position(node, offset);
+ Position candidate = position.downstream(Position::CanCrossEditingBoundary);
+ if (candidate.node()->isContentEditable())
+ return VisiblePosition(candidate, affinity);
+ candidate = position.upstream(Position::CanCrossEditingBoundary);
+ if (candidate.node()->isContentEditable())
+ return VisiblePosition(candidate, affinity);
+ }
+ return VisiblePosition(node, offset, affinity);
+ }
+
+ // We don't want to cross the boundary between editable and non-editable
+ // regions of the document, but that is either impossible or at least
+ // extremely unlikely in any normal case because we stop as soon as we
+ // find a single non-anonymous renderer.
+
+ // Find a nearby non-anonymous renderer.
+ RenderObject* child = this;
+ while (RenderObject* parent = child->parent()) {
+ // Find non-anonymous content after.
+ RenderObject* renderer = child;
+ while ((renderer = renderer->nextInPreOrder(parent))) {
+ if (Node* node = renderer->node())
+ return VisiblePosition(node, 0, DOWNSTREAM);
+ }
+
+ // Find non-anonymous content before.
+ renderer = child;
+ while ((renderer = renderer->previousInPreOrder())) {
+ if (renderer == parent)
+ break;
+ if (Node* node = renderer->node())
+ return VisiblePosition(lastDeepEditingPositionForNode(node), DOWNSTREAM);
+ }
+
+ // Use the parent itself unless it too is anonymous.
+ if (Node* node = parent->node())
+ return VisiblePosition(node, 0, DOWNSTREAM);
+
+ // Repeat at the next level up.
+ child = parent;
+ }
+
+ // Everything was anonymous. Give up.
+ return VisiblePosition();
+}
+
+VisiblePosition RenderObject::createVisiblePosition(const Position& position)
+{
+ if (position.isNotNull())
+ return VisiblePosition(position);
+
+ ASSERT(!node());
+ return createVisiblePosition(0, DOWNSTREAM);
+}
+
+#if ENABLE(SVG)
+RenderSVGResourceContainer* RenderObject::toRenderSVGResourceContainer()
+{
+ ASSERT_NOT_REACHED();
+ return 0;
+}
+
+FloatRect RenderObject::objectBoundingBox() const
+{
+ ASSERT_NOT_REACHED();
+ return FloatRect();
+}
+
+FloatRect RenderObject::strokeBoundingBox() const
+{
+ ASSERT_NOT_REACHED();
+ return FloatRect();
+}
+
+// Returns the smallest rectangle enclosing all of the painted content
+// respecting clipping, masking, filters, opacity, stroke-width and markers
+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)
+
+} // namespace WebCore
+
+#ifndef NDEBUG
+
+void showTree(const WebCore::RenderObject* ro)
+{
+ if (ro)
+ ro->showTreeForThis();
+}
+
+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