diff options
Diffstat (limited to 'Source/WebCore/rendering/RenderObject.cpp')
| -rw-r--r-- | Source/WebCore/rendering/RenderObject.cpp | 2776 |
1 files changed, 2776 insertions, 0 deletions
diff --git a/Source/WebCore/rendering/RenderObject.cpp b/Source/WebCore/rendering/RenderObject.cpp new file mode 100644 index 0000000..27a53d0 --- /dev/null +++ b/Source/WebCore/rendering/RenderObject.cpp @@ -0,0 +1,2776 @@ +/* + * 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 "EditingBoundary.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 "RenderImage.h" +#include "RenderImageResourceStyleImage.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> +#ifdef ANDROID_LAYOUT +#include "Settings.h" +#endif +#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) { + RenderImage* image = new (arena) RenderImage(node); + image->setStyle(style); + if (StyleImage* styleImage = contentData->image()) + image->setImageResource(RenderImageResourceStyleImage::create(styleImage)); + else + image->setImageResource(RenderImageResource::create()); + return image; + } + + if (node->hasTagName(rubyTag)) { + if (style->display() == INLINE) + return new (arena) RenderRubyAsInline(node); + else if (style->display() == BLOCK) + return new (arena) RenderRubyAsBlock(node); + } + // 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); + + 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_preferredLogicalWidthsDirty(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_marginBeforeQuirk(false) + , m_marginAfterQuirk(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::isLegend() const +{ + return node() && (node()->hasTagName(legendTag) +#if ENABLE(WML) + || node()->hasTagName(WMLNames::insertedLegendTag) +#endif + ); +} + +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; +} + +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::setPreferredLogicalWidthsDirty(bool b, bool markParents) +{ + bool alreadyDirty = m_preferredLogicalWidthsDirty; + m_preferredLogicalWidthsDirty = b; + if (b && !alreadyDirty && markParents && (isText() || (style()->position() != FixedPosition && style()->position() != AbsolutePosition))) + invalidateContainerPreferredLogicalWidths(); +} + +void RenderObject::invalidateContainerPreferredLogicalWidths() +{ + // 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_preferredLogicalWidthsDirty) { + // 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_preferredLogicalWidthsDirty = 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->strokePath(borderPath); + 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::paintFocusRing(GraphicsContext* context, int tx, int ty, RenderStyle* style) +{ + Vector<IntRect> focusRingRects; + addFocusRingRects(focusRingRects, tx, ty); + if (style->outlineStyleIsAuto()) + context->drawFocusRing(focusRingRects, style->outlineWidth(), style->outlineOffset(), style->visitedDependentColor(CSSPropertyOutlineColor)); + else + addPDFURLRect(context, unionRect(focusRingRects)); +} + +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. + paintFocusRing(graphicsContext, tx, ty, styleToUse); + } + } + + 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 boxWidth = isBox() ? toRenderBox(this)->width() : 0; + int borderWidth = max(-outlineStyle->outlineOffset(), max(borderRight, max(style()->borderTopRightRadius().width().calcValue(boxWidth), style()->borderBottomRightRadius().width().calcValue(boxWidth)))) + 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 boxHeight = isBox() ? toRenderBox(this)->height() : 0; + int borderHeight = max(-outlineStyle->outlineOffset(), max(borderBottom, max(style()->borderBottomLeftRadius().height().calcValue(boxHeight), style()->borderBottomRightRadius().height().calcValue(boxHeight)))) + 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::selectionColor(int colorProperty) const +{ + Color color; + // If the element is unselectable, or we are only painting the selection, + // don't override the foreground color with the selection foreground color. + if (style()->userSelect() == SELECT_NONE + || (frame()->view()->paintBehavior() & PaintBehaviorSelectionOnly)) + return color; + + if (RefPtr<RenderStyle> pseudoStyle = getUncachedPseudoStyle(SELECTION)) { + color = pseudoStyle->visitedDependentColor(colorProperty); + if (!color.isValid()) + color = pseudoStyle->visitedDependentColor(CSSPropertyColor); + } else + color = frame()->selection()->isFocusedAndActive() ? + theme()->activeSelectionForegroundColor() : + theme()->inactiveSelectionForegroundColor(); + + return color; +} + +Color RenderObject::selectionForegroundColor() const +{ + return selectionColor(CSSPropertyWebkitTextFillColor); +} + +Color RenderObject::selectionEmphasisMarkColor() const +{ + return selectionColor(CSSPropertyWebkitTextEmphasisColor); +} + +#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) { +#if USE(ACCELERATED_COMPOSITING) + // We need to run through adjustStyleDifference() for iframes and plugins, so + // style sharing is disabled for them. That should ensure that we never hit this code path. + ASSERT(!isRenderIFrame() && !isEmbeddedObject() &&!isApplet()); +#endif + return; + } + + StyleDifference diff = StyleDifferenceEqual; + unsigned contextSensitiveProperties = ContextSensitivePropertyNone; + if (m_style) + diff = m_style->diff(style.get(), contextSensitiveProperties); + + diff = adjustStyleDifference(diff, contextSensitiveProperties); + + styleWillChange(diff, style.get()); + + RefPtr<RenderStyle> oldStyle = m_style.release(); + m_style = style; + + updateFillImages(oldStyle ? oldStyle->backgroundLayers() : 0, m_style ? m_style->backgroundLayers() : 0); + updateFillImages(oldStyle ? oldStyle->maskLayers() : 0, m_style ? m_style->maskLayers() : 0); + + updateImage(oldStyle ? oldStyle->borderImage().image() : 0, m_style ? m_style->borderImage().image() : 0); + updateImage(oldStyle ? oldStyle->maskBoxImage().image() : 0, m_style ? m_style->maskBoxImage().image() : 0); + + // 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 = toRenderBoxModelObject(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 computePositionedLogicalWidth and + // computePositionedLogicalHeight 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()) + 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; +} + +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. + renderer->style()->setHasPseudoStyle(FIRST_LINE_INHERITED); + style = renderer->getCachedPseudoStyle(FIRST_LINE_INHERITED, parentStyle); + } + } + + return style; +} + +RenderStyle* RenderObject::getCachedPseudoStyle(PseudoId pseudo, RenderStyle* parentStyle) const +{ + if (pseudo < FIRST_INTERNAL_PSEUDOID && !style()->hasPseudoStyle(pseudo)) + return 0; + + RenderStyle* cachedStyle = style()->getCachedPseudoStyle(pseudo); + if (cachedStyle) + return cachedStyle; + + RefPtr<RenderStyle> result = getUncachedPseudoStyle(pseudo, parentStyle); + if (result) + return style()->addCachedPseudoStyle(result.release()); + return 0; +} + +PassRefPtr<RenderStyle> RenderObject::getUncachedPseudoStyle(PseudoId pseudo, RenderStyle* parentStyle, RenderStyle* ownStyle) const +{ + if (pseudo < FIRST_INTERNAL_PSEUDOID && !ownStyle && !style()->hasPseudoStyle(pseudo)) + return 0; + + if (!parentStyle) { + ASSERT(!ownStyle); + parentStyle = style(); + } + + Node* n = node(); + while (n && !n->isElementNode()) + n = n->parentNode(); + if (!n) + return 0; + + 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()) { + boxShadow->adjustRectForShadow(rect, outlineSize); + return; + } + + rect.inflate(outlineSize); +} + +AnimationController* RenderObject::animation() const +{ + return frame()->animation(); +} + +void RenderObject::imageChanged(CachedImage* image, const IntRect* rect) +{ + imageChanged(static_cast<WrappedImagePtr>(image), rect); +} + +RenderBoxModelObject* RenderObject::offsetParent() const +{ + // If 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(CanCrossEditingBoundary); + if (candidate.node()->isContentEditable()) + return VisiblePosition(candidate, affinity); + candidate = position.upstream(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; +} + +void RenderObject::setNeedsBoundariesUpdate() +{ + if (RenderObject* renderer = parent()) + renderer->setNeedsBoundariesUpdate(); +} + +FloatRect RenderObject::objectBoundingBox() const +{ + ASSERT_NOT_REACHED(); + return FloatRect(); +} + +FloatRect RenderObject::strokeBoundingBox() const +{ + ASSERT_NOT_REACHED(); + return FloatRect(); +} + +// 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 |