/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#include "config.h"
#include "RenderInline.h"
#include "Chrome.h"
#include "FloatQuad.h"
#include "GraphicsContext.h"
#include "HitTestResult.h"
#include "Page.h"
#include "RenderArena.h"
#include "RenderBlock.h"
#include "RenderView.h"
#include "TransformState.h"
#include "VisiblePosition.h"
#if ENABLE(DASHBOARD_SUPPORT)
#include "Frame.h"
#endif
using namespace std;
namespace WebCore {
RenderInline::RenderInline(Node* node)
: RenderBoxModelObject(node)
, m_continuation(0)
, m_lineHeight(-1)
, m_verticalPosition(PositionUndefined)
{
setChildrenInline(true);
}
void RenderInline::destroy()
{
// Make sure to destroy anonymous children first while they are still connected to the rest of the tree, so that they will
// properly dirty line boxes that they are removed from. Effects that do :before/:after only on hover could crash otherwise.
children()->destroyLeftoverChildren();
// Destroy our continuation before anything other than anonymous children.
// The reason we don't destroy it before anonymous children is that they may
// have continuations of their own that are anonymous children of our continuation.
if (m_continuation) {
m_continuation->destroy();
m_continuation = 0;
}
if (!documentBeingDestroyed()) {
if (firstLineBox()) {
// We can't wait for RenderBoxModelObject::destroy to clear the selection,
// because by then we will have nuked the line boxes.
// FIXME: The SelectionController should be responsible for this when it
// is notified of DOM mutations.
if (isSelectionBorder())
view()->clearSelection();
// If line boxes are contained inside a root, that means we're an inline.
// In that case, we need to remove all the line boxes so that the parent
// lines aren't pointing to deleted children. If the first line box does
// not have a parent that means they are either already disconnected or
// root lines that can just be destroyed without disconnecting.
if (firstLineBox()->parent()) {
for (InlineRunBox* box = firstLineBox(); box; box = box->nextLineBox())
box->remove();
}
} else if (isInline() && parent())
parent()->dirtyLinesFromChangedChild(this);
}
m_lineBoxes.deleteLineBoxes(renderArena());
RenderBoxModelObject::destroy();
}
RenderInline* RenderInline::inlineContinuation() const
{
if (!m_continuation || m_continuation->isInline())
return toRenderInline(m_continuation);
return toRenderBlock(m_continuation)->inlineContinuation();
}
void RenderInline::updateBoxModelInfoFromStyle()
{
RenderBoxModelObject::updateBoxModelInfoFromStyle();
setInline(true); // Needed for run-ins, since run-in is considered a block display type.
// FIXME: Support transforms and reflections on inline flows someday.
setHasTransform(false);
setHasReflection(false);
}
void RenderInline::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
{
RenderBoxModelObject::styleDidChange(diff, oldStyle);
// Ensure that all of the split inlines pick up the new style. We
// only do this if we're an inline, since we don't want to propagate
// a block's style to the other inlines.
// e.g., <font>foo <h4>goo</h4> moo</font>. The <font> inlines before
// and after the block share the same style, but the block doesn't
// need to pass its style on to anyone else.
for (RenderInline* currCont = inlineContinuation(); currCont; currCont = currCont->inlineContinuation()) {
RenderBoxModelObject* nextCont = currCont->continuation();
currCont->setContinuation(0);
currCont->setStyle(style());
currCont->setContinuation(nextCont);
}
m_lineHeight = -1;
// Update pseudos for :before and :after now.
if (!isAnonymous() && document()->usesBeforeAfterRules()) {
children()->updateBeforeAfterContent(this, BEFORE);
children()->updateBeforeAfterContent(this, AFTER);
}
}
void RenderInline::addChild(RenderObject* newChild, RenderObject* beforeChild)
{
if (continuation())
return addChildToContinuation(newChild, beforeChild);
return addChildIgnoringContinuation(newChild, beforeChild);
}
static RenderBoxModelObject* nextContinuation(RenderObject* renderer)
{
if (renderer->isInline() && !renderer->isReplaced())
return toRenderInline(renderer)->continuation();
return toRenderBlock(renderer)->inlineContinuation();
}
RenderBoxModelObject* RenderInline::continuationBefore(RenderObject* beforeChild)
{
if (beforeChild && beforeChild->parent() == this)
return this;
RenderBoxModelObject* curr = nextContinuation(this);
RenderBoxModelObject* nextToLast = this;
RenderBoxModelObject* last = this;
while (curr) {
if (beforeChild && beforeChild->parent() == curr) {
if (curr->firstChild() == beforeChild)
return last;
return curr;
}
nextToLast = last;
last = curr;
curr = nextContinuation(curr);
}
if (!beforeChild && !last->firstChild())
return nextToLast;
return last;
}
void RenderInline::addChildIgnoringContinuation(RenderObject* newChild, RenderObject* beforeChild)
{
// Make sure we don't append things after :after-generated content if we have it.
if (!beforeChild && isAfterContent(lastChild()))
beforeChild = lastChild();
if (!newChild->isInline() && !newChild->isFloatingOrPositioned()) {
// We are placing a block inside an inline. We have to perform a split of this
// inline into continuations. This involves creating an anonymous block box to hold
// |newChild|. We then make that block box a continuation of this inline. We take all of
// the children after |beforeChild| and put them in a clone of this object.
RefPtr<RenderStyle> newStyle = RenderStyle::create();
newStyle->inheritFrom(style());
newStyle->setDisplay(BLOCK);
RenderBlock* newBox = new (renderArena()) RenderBlock(document() /* anonymous box */);
newBox->setStyle(newStyle.release());
RenderBoxModelObject* oldContinuation = continuation();
setContinuation(newBox);
// Someone may have put a <p> inside a <q>, causing a split. When this happens, the :after content
// has to move into the inline continuation. Call updateBeforeAfterContent to ensure that our :after
// content gets properly destroyed.
bool isLastChild = (beforeChild == lastChild());
if (document()->usesBeforeAfterRules())
children()->updateBeforeAfterContent(this, AFTER);
if (isLastChild && beforeChild != lastChild())
beforeChild = 0; // We destroyed the last child, so now we need to update our insertion
// point to be 0. It's just a straight append now.
splitFlow(beforeChild, newBox, newChild, oldContinuation);
return;
}
RenderBoxModelObject::addChild(newChild, beforeChild);
newChild->setNeedsLayoutAndPrefWidthsRecalc();
}
RenderInline* RenderInline::cloneInline(RenderInline* src)
{
RenderInline* o = new (src->renderArena()) RenderInline(src->node());
o->setStyle(src->style());
return o;
}
void RenderInline::splitInlines(RenderBlock* fromBlock, RenderBlock* toBlock,
RenderBlock* middleBlock,
RenderObject* beforeChild, RenderBoxModelObject* oldCont)
{
// Create a clone of this inline.
RenderInline* clone = cloneInline(this);
clone->setContinuation(oldCont);
// Now take all of the children from beforeChild to the end and remove
// them from |this| and place them in the clone.
RenderObject* o = beforeChild;
while (o) {
RenderObject* tmp = o;
o = tmp->nextSibling();
clone->addChildIgnoringContinuation(children()->removeChildNode(this, tmp), 0);
tmp->setNeedsLayoutAndPrefWidthsRecalc();
}
// Hook |clone| up as the continuation of the middle block.
middleBlock->setInlineContinuation(clone);
// We have been reparented and are now under the fromBlock. We need
// to walk up our inline parent chain until we hit the containing block.
// Once we hit the containing block we're done.
RenderBoxModelObject* curr = toRenderBoxModelObject(parent());
RenderBoxModelObject* currChild = this;
// FIXME: Because splitting is O(n^2) as tags nest pathologically, we cap the depth at which we're willing to clone.
// There will eventually be a better approach to this problem that will let us nest to a much
// greater depth (see bugzilla bug 13430) but for now we have a limit. This *will* result in
// incorrect rendering, but the alternative is to hang forever.
unsigned splitDepth = 1;
const unsigned cMaxSplitDepth = 200;
while (curr && curr != fromBlock) {
ASSERT(curr->isRenderInline());
if (splitDepth < cMaxSplitDepth) {
// Create a new clone.
RenderInline* cloneChild = clone;
clone = cloneInline(toRenderInline(curr));
// Insert our child clone as the first child.
clone->addChildIgnoringContinuation(cloneChild, 0);
// Hook the clone up as a continuation of |curr|.
RenderInline* inlineCurr = toRenderInline(curr);
oldCont = inlineCurr->continuation();
inlineCurr->setContinuation(clone);
clone->setContinuation(oldCont);
// Someone may have indirectly caused a <q> to split. When this happens, the :after content
// has to move into the inline continuation. Call updateBeforeAfterContent to ensure that the inline's :after
// content gets properly destroyed.
if (document()->usesBeforeAfterRules())
inlineCurr->children()->updateBeforeAfterContent(this, AFTER);
// Now we need to take all of the children starting from the first child
// *after* currChild and append them all to the clone.
o = currChild->nextSibling();
while (o) {
RenderObject* tmp = o;
o = tmp->nextSibling();
clone->addChildIgnoringContinuation(inlineCurr->children()->removeChildNode(curr, tmp), 0);
tmp->setNeedsLayoutAndPrefWidthsRecalc();
}
}
// Keep walking up the chain.
currChild = curr;
curr = toRenderBoxModelObject(curr->parent());
splitDepth++;
}
// Now we are at the block level. We need to put the clone into the toBlock.
toBlock->children()->appendChildNode(toBlock, clone);
// Now take all the children after currChild and remove them from the fromBlock
// and put them in the toBlock.
o = currChild->nextSibling();
while (o) {
RenderObject* tmp = o;
o = tmp->nextSibling();
toBlock->children()->appendChildNode(toBlock, fromBlock->children()->removeChildNode(fromBlock, tmp));
}
}
void RenderInline::splitFlow(RenderObject* beforeChild, RenderBlock* newBlockBox,
RenderObject* newChild, RenderBoxModelObject* oldCont)
{
RenderBlock* pre = 0;
RenderBlock* block = containingBlock();
// Delete our line boxes before we do the inline split into continuations.
block->deleteLineBoxTree();
bool madeNewBeforeBlock = false;
if (block->isAnonymousBlock() && (!block->parent() || !block->parent()->createsAnonymousWrapper())) {
// We can reuse this block and make it the preBlock of the next continuation.
pre = block;
pre->removePositionedObjects(0);
block = block->containingBlock();
} else {
// No anonymous block available for use. Make one.
pre = block->createAnonymousBlock();
madeNewBeforeBlock = true;
}
RenderBlock* post = block->createAnonymousBlock();
RenderObject* boxFirst = madeNewBeforeBlock ? block->firstChild() : pre->nextSibling();
if (madeNewBeforeBlock)
block->children()->insertChildNode(block, pre, boxFirst);
block->children()->insertChildNode(block, newBlockBox, boxFirst);
block->children()->insertChildNode(block, post, boxFirst);
block->setChildrenInline(false);
if (madeNewBeforeBlock) {
RenderObject* o = boxFirst;
while (o) {
RenderObject* no = o;
o = no->nextSibling();
pre->children()->appendChildNode(pre, block->children()->removeChildNode(block, no));
no->setNeedsLayoutAndPrefWidthsRecalc();
}
}
splitInlines(pre, post, newBlockBox, beforeChild, oldCont);
// We already know the newBlockBox isn't going to contain inline kids, so avoid wasting
// time in makeChildrenNonInline by just setting this explicitly up front.
newBlockBox->setChildrenInline(false);
// We delayed adding the newChild until now so that the |newBlockBox| would be fully
// connected, thus allowing newChild access to a renderArena should it need
// to wrap itself in additional boxes (e.g., table construction).
newBlockBox->addChild(newChild);
// Always just do a full layout in order to ensure that line boxes (especially wrappers for images)
// get deleted properly. Because objects moves from the pre block into the post block, we want to
// make new line boxes instead of leaving the old line boxes around.
pre->setNeedsLayoutAndPrefWidthsRecalc();
block->setNeedsLayoutAndPrefWidthsRecalc();
post->setNeedsLayoutAndPrefWidthsRecalc();
}
void RenderInline::addChildToContinuation(RenderObject* newChild, RenderObject* beforeChild)
{
RenderBoxModelObject* flow = continuationBefore(beforeChild);
ASSERT(!beforeChild || beforeChild->parent()->isRenderBlock() || beforeChild->parent()->isRenderInline());
RenderBoxModelObject* beforeChildParent = 0;
if (beforeChild)
beforeChildParent = toRenderBoxModelObject(beforeChild->parent());
else {
RenderBoxModelObject* cont = nextContinuation(flow);
if (cont)
beforeChildParent = cont;
else
beforeChildParent = flow;
}
if (newChild->isFloatingOrPositioned())
return beforeChildParent->addChildIgnoringContinuation(newChild, beforeChild);
// A continuation always consists of two potential candidates: an inline or an anonymous
// block box holding block children.
bool childInline = newChild->isInline();
bool bcpInline = beforeChildParent->isInline();
bool flowInline = flow->isInline();
if (flow == beforeChildParent)
return flow->addChildIgnoringContinuation(newChild, beforeChild);
else {
// The goal here is to match up if we can, so that we can coalesce and create the
// minimal # of continuations needed for the inline.
if (childInline == bcpInline)
return beforeChildParent->addChildIgnoringContinuation(newChild, beforeChild);
else if (flowInline == childInline)
return flow->addChildIgnoringContinuation(newChild, 0); // Just treat like an append.
else
return beforeChildParent->addChildIgnoringContinuation(newChild, beforeChild);
}
}
void RenderInline::paint(PaintInfo& paintInfo, int tx, int ty)
{
m_lineBoxes.paint(this, paintInfo, tx, ty);
}
void RenderInline::absoluteRects(Vector<IntRect>& rects, int tx, int ty)
{
if (InlineRunBox* curr = firstLineBox()) {
for (; curr; curr = curr->nextLineBox())
rects.append(IntRect(tx + curr->x(), ty + curr->y(), curr->width(), curr->height()));
} else
rects.append(IntRect(tx, ty, 0, 0));
if (continuation()) {
if (continuation()->isBox()) {
RenderBox* box = toRenderBox(continuation());
continuation()->absoluteRects(rects,
tx - containingBlock()->x() + box->x(),
ty - containingBlock()->y() + box->y());
} else
continuation()->absoluteRects(rects, tx - containingBlock()->x(), ty - containingBlock()->y());
}
}
void RenderInline::absoluteQuads(Vector<FloatQuad>& quads)
{
if (InlineRunBox* curr = firstLineBox()) {
for (; curr; curr = curr->nextLineBox()) {
FloatRect localRect(curr->x(), curr->y(), curr->width(), curr->height());
quads.append(localToAbsoluteQuad(localRect));
}
} else
quads.append(localToAbsoluteQuad(FloatRect()));
if (continuation())
continuation()->absoluteQuads(quads);
}
int RenderInline::offsetLeft() const
{
int x = RenderBoxModelObject::offsetLeft();
if (firstLineBox())
x += firstLineBox()->x();
return x;
}
int RenderInline::offsetTop() const
{
int y = RenderBoxModelObject::offsetTop();
if (firstLineBox())
y += firstLineBox()->y();
return y;
}
int RenderInline::marginLeft() const
{
Length margin = style()->marginLeft();
if (margin.isAuto())
return 0;
if (margin.isFixed())
return margin.value();
if (margin.isPercent())
return margin.calcMinValue(max(0, containingBlock()->availableWidth()));
return 0;
}
int RenderInline::marginRight() const
{
Length margin = style()->marginRight();
if (margin.isAuto())
return 0;
if (margin.isFixed())
return margin.value();
if (margin.isPercent())
return margin.calcMinValue(max(0, containingBlock()->availableWidth()));
return 0;
}
const char* RenderInline::renderName() const
{
if (isRelPositioned())
return "RenderInline (relative positioned)";
if (isAnonymous())
return "RenderInline (generated)";
if (isRunIn())
return "RenderInline (run-in)";
return "RenderInline";
}
bool RenderInline::nodeAtPoint(const HitTestRequest& request, HitTestResult& result,
int x, int y, int tx, int ty, HitTestAction hitTestAction)
{
return m_lineBoxes.hitTest(this, request, result, x, y, tx, ty, hitTestAction);
}
VisiblePosition RenderInline::positionForPoint(const IntPoint& point)
{
// FIXME: Does not deal with relative positioned inlines (should it?)
RenderBlock* cb = containingBlock();
if (firstLineBox()) {
// This inline actually has a line box. We must have clicked in the border/padding of one of these boxes. We
// should try to find a result by asking our containing block.
return cb->positionForPoint(point);
}
// Translate the coords from the pre-anonymous block to the post-anonymous block.
int parentBlockX = cb->x() + point.x();
int parentBlockY = cb->y() + point.y();
RenderBoxModelObject* c = continuation();
while (c) {
RenderBox* contBlock = c->isInline() ? c->containingBlock() : toRenderBlock(c);
if (c->isInline() || c->firstChild())
return c->positionForCoordinates(parentBlockX - contBlock->x(), parentBlockY - contBlock->y());
c = toRenderBlock(c)->inlineContinuation();
}
return RenderBoxModelObject::positionForPoint(point);
}
IntRect RenderInline::linesBoundingBox() const
{
IntRect result;
// See <rdar://problem/5289721>, for an unknown reason the linked list here is sometimes inconsistent, first is non-zero and last is zero. We have been
// unable to reproduce this at all (and consequently unable to figure ot why this is happening). The assert will hopefully catch the problem in debug
// builds and help us someday figure out why. We also put in a redundant check of lastLineBox() to avoid the crash for now.
ASSERT(!firstLineBox() == !lastLineBox()); // Either both are null or both exist.
if (firstLineBox() && lastLineBox()) {
// Return the width of the minimal left side and the maximal right side.
int leftSide = 0;
int rightSide = 0;
for (InlineRunBox* curr = firstLineBox(); curr; curr = curr->nextLineBox()) {
if (curr == firstLineBox() || curr->x() < leftSide)
leftSide = curr->x();
if (curr == firstLineBox() || curr->x() + curr->width() > rightSide)
rightSide = curr->x() + curr->width();
}
result.setWidth(rightSide - leftSide);
result.setX(leftSide);
result.setHeight(lastLineBox()->y() + lastLineBox()->height() - firstLineBox()->y());
result.setY(firstLineBox()->y());
}
return result;
}
IntRect RenderInline::linesVisibleOverflowBoundingBox() const
{
if (!firstLineBox() || !lastLineBox())
return IntRect();
// Return the width of the minimal left side and the maximal right side.
int leftSide = numeric_limits<int>::max();
int rightSide = numeric_limits<int>::min();
for (InlineFlowBox* curr = firstLineBox(); curr; curr = curr->nextFlowBox()) {
leftSide = min(leftSide, curr->leftVisibleOverflow());
rightSide = max(rightSide, curr->rightVisibleOverflow());
}
return IntRect(leftSide, firstLineBox()->topVisibleOverflow(), rightSide - leftSide,
lastLineBox()->bottomVisibleOverflow() - firstLineBox()->topVisibleOverflow());
}
IntRect RenderInline::clippedOverflowRectForRepaint(RenderBoxModelObject* repaintContainer)
{
// Only run-ins are allowed in here during layout.
ASSERT(!view() || !view()->layoutStateEnabled() || isRunIn());
if (!firstLineBox() && !continuation())
return IntRect();
// Find our leftmost position.
IntRect boundingBox(linesVisibleOverflowBoundingBox());
int left = boundingBox.x();
int top = boundingBox.y();
// Now invalidate a rectangle.
int ow = style() ? style()->outlineSize() : 0;
// We need to add in the relative position offsets of any inlines (including us) up to our
// containing block.
RenderBlock* cb = containingBlock();
for (RenderObject* inlineFlow = this; inlineFlow && inlineFlow->isRenderInline() && inlineFlow != cb;
inlineFlow = inlineFlow->parent()) {
if (inlineFlow->style()->position() == RelativePosition && inlineFlow->hasLayer())
toRenderInline(inlineFlow)->layer()->relativePositionOffset(left, top);
}
IntRect r(-ow + left, -ow + top, boundingBox.width() + ow * 2, boundingBox.height() + ow * 2);
if (cb->hasColumns())
cb->adjustRectForColumns(r);
if (cb->hasOverflowClip()) {
// cb->height() is inaccurate if we're in the middle of a layout of |cb|, 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.
int x = r.x();
int y = r.y();
IntRect boxRect(0, 0, cb->layer()->width(), cb->layer()->height());
cb->layer()->subtractScrolledContentOffset(x, y); // For overflow:auto/scroll/hidden.
IntRect repaintRect(x, y, r.width(), r.height());
r = intersection(repaintRect, boxRect);
}
// FIXME: need to ensure that we compute the correct repaint rect when the repaint container
// is an inline.
if (repaintContainer != this)
cb->computeRectForRepaint(repaintContainer, r);
if (ow) {
for (RenderObject* curr = firstChild(); curr; curr = curr->nextSibling()) {
if (!curr->isText()) {
IntRect childRect = curr->rectWithOutlineForRepaint(repaintContainer, ow);
r.unite(childRect);
}
}
if (continuation() && !continuation()->isInline()) {
IntRect contRect = continuation()->rectWithOutlineForRepaint(repaintContainer, ow);
r.unite(contRect);
}
}
return r;
}
IntRect RenderInline::rectWithOutlineForRepaint(RenderBoxModelObject* repaintContainer, int outlineWidth)
{
IntRect r(RenderBoxModelObject::rectWithOutlineForRepaint(repaintContainer, outlineWidth));
for (RenderObject* curr = firstChild(); curr; curr = curr->nextSibling()) {
if (!curr->isText())
r.unite(curr->rectWithOutlineForRepaint(repaintContainer, outlineWidth));
}
return r;
}
void RenderInline::computeRectForRepaint(RenderBoxModelObject* repaintContainer, IntRect& rect, bool fixed)
{
if (RenderView* v = view()) {
// LayoutState is only valid for root-relative repainting
if (v->layoutStateEnabled() && !repaintContainer) {
LayoutState* layoutState = v->layoutState();
if (style()->position() == RelativePosition && layer())
rect.move(layer()->relativePositionOffset());
rect.move(layoutState->m_offset);
if (layoutState->m_clipped)
rect.intersect(layoutState->m_clipRect);
return;
}
}
if (repaintContainer == this)
return;
bool containerSkipped;
RenderObject* o = container(repaintContainer, &containerSkipped);
if (!o)
return;
IntPoint topLeft = rect.location();
if (o->isBlockFlow() && style()->position() != AbsolutePosition && style()->position() != FixedPosition) {
RenderBlock* cb = toRenderBlock(o);
if (cb->hasColumns()) {
IntRect repaintRect(topLeft, rect.size());
cb->adjustRectForColumns(repaintRect);
topLeft = repaintRect.location();
rect = repaintRect;
}
}
if (style()->position() == RelativePosition && layer()) {
// Apply the relative position offset when invalidating a rectangle. The layer
// is translated, but the render box isn't, so we need to do this to get the
// right dirty rect. Since this is called from RenderObject::setStyle, the relative position
// flag on the RenderObject has been cleared, so use the one on the style().
topLeft += layer()->relativePositionOffset();
}
// FIXME: We ignore the lightweight clipping rect that controls use, since if |o| is in mid-layout,
// its controlClipRect will be wrong. For overflow clip we use the values cached by the layer.
if (o->hasOverflowClip()) {
RenderBox* containerBox = toRenderBox(o);
// 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.
topLeft -= containerBox->layer()->scrolledContentOffset(); // For overflow:auto/scroll/hidden.
IntRect repaintRect(topLeft, rect.size());
IntRect boxRect(0, 0, containerBox->layer()->width(), containerBox->layer()->height());
rect = intersection(repaintRect, boxRect);
if (rect.isEmpty())
return;
} else
rect.setLocation(topLeft);
if (containerSkipped) {
// If the repaintContainer is below o, then we need to map the rect into repaintContainer's coordinates.
IntSize containerOffset = repaintContainer->offsetFromAncestorContainer(o);
rect.move(-containerOffset);
return;
}
o->computeRectForRepaint(repaintContainer, rect, fixed);
}
IntSize RenderInline::offsetFromContainer(RenderObject* container) const
{
ASSERT(container == this->container());
IntSize offset;
if (isRelPositioned())
offset += relativePositionOffset();
if (!isInline() || isReplaced()) {
RenderBlock* cb;
if (container->isBlockFlow() && (cb = toRenderBlock(container))->hasColumns()) {
IntRect rect(0, 0, 1, 1);
cb->adjustRectForColumns(rect);
}
}
if (container->hasOverflowClip())
offset -= toRenderBox(container)->layer()->scrolledContentOffset();
return offset;
}
void RenderInline::mapLocalToContainer(RenderBoxModelObject* repaintContainer, bool fixed, bool useTransforms, TransformState& transformState) const
{
if (repaintContainer == this)
return;
if (RenderView *v = view()) {
if (v->layoutStateEnabled() && !repaintContainer) {
LayoutState* layoutState = v->layoutState();
IntSize offset = layoutState->m_offset;
if (style()->position() == RelativePosition && layer())
offset += layer()->relativePositionOffset();
transformState.move(offset);
return;
}
}
bool containerSkipped;
RenderObject* o = container(repaintContainer, &containerSkipped);
if (!o)
return;
IntSize containerOffset = offsetFromContainer(o);
bool preserve3D = useTransforms && (o->style()->preserves3D() || style()->preserves3D());
if (useTransforms && shouldUseTransformFromContainer(o)) {
TransformationMatrix t;
getTransformFromContainer(o, containerOffset, t);
transformState.applyTransform(t, preserve3D ? TransformState::AccumulateTransform : TransformState::FlattenTransform);
} else
transformState.move(containerOffset.width(), containerOffset.height(), preserve3D ? TransformState::AccumulateTransform : TransformState::FlattenTransform);
if (containerSkipped) {
// There can't be a transform between repaintContainer and o, because transforms create containers, so it should be safe
// to just subtract the delta between the repaintContainer and o.
IntSize containerOffset = repaintContainer->offsetFromAncestorContainer(o);
transformState.move(-containerOffset.width(), -containerOffset.height(), preserve3D ? TransformState::AccumulateTransform : TransformState::FlattenTransform);
return;
}
o->mapLocalToContainer(repaintContainer, fixed, useTransforms, transformState);
}
void RenderInline::mapAbsoluteToLocalPoint(bool fixed, bool useTransforms, TransformState& transformState) const
{
// We don't expect this function to be called during layout.
ASSERT(!view() || !view()->layoutStateEnabled());
RenderObject* o = container();
if (!o)
return;
o->mapAbsoluteToLocalPoint(fixed, useTransforms, transformState);
IntSize containerOffset = offsetFromContainer(o);
bool preserve3D = useTransforms && (o->style()->preserves3D() || style()->preserves3D());
if (useTransforms && shouldUseTransformFromContainer(o)) {
TransformationMatrix t;
getTransformFromContainer(o, containerOffset, t);
transformState.applyTransform(t, preserve3D ? TransformState::AccumulateTransform : TransformState::FlattenTransform);
} else
transformState.move(-containerOffset.width(), -containerOffset.height(), preserve3D ? TransformState::AccumulateTransform : TransformState::FlattenTransform);
}
void RenderInline::updateDragState(bool dragOn)
{
RenderBoxModelObject::updateDragState(dragOn);
if (continuation())
continuation()->updateDragState(dragOn);
}
void RenderInline::childBecameNonInline(RenderObject* child)
{
// We have to split the parent flow.
RenderBlock* newBox = containingBlock()->createAnonymousBlock();
RenderBoxModelObject* oldContinuation = continuation();
setContinuation(newBox);
RenderObject* beforeChild = child->nextSibling();
children()->removeChildNode(this, child);
splitFlow(beforeChild, newBox, child, oldContinuation);
}
void RenderInline::updateHitTestResult(HitTestResult& result, const IntPoint& point)
{
if (result.innerNode())
return;
Node* n = node();
IntPoint localPoint(point);
if (n) {
if (isInlineContinuation()) {
// We're in the continuation of a split inline. Adjust our local point to be in the coordinate space
// of the principal renderer's containing block. This will end up being the innerNonSharedNode.
RenderBlock* firstBlock = n->renderer()->containingBlock();
// Get our containing block.
RenderBox* block = containingBlock();
localPoint.move(block->x() - firstBlock->x(), block->y() - firstBlock->y());
}
result.setInnerNode(n);
if (!result.innerNonSharedNode())
result.setInnerNonSharedNode(n);
result.setLocalPoint(localPoint);
}
}
void RenderInline::dirtyLineBoxes(bool fullLayout)
{
if (fullLayout)
m_lineBoxes.deleteLineBoxes(renderArena());
else
m_lineBoxes.dirtyLineBoxes();
}
InlineFlowBox* RenderInline::createInlineFlowBox()
{
return new (renderArena()) InlineFlowBox(this);
}
InlineFlowBox* RenderInline::createAndAppendInlineFlowBox()
{
InlineFlowBox* flowBox = createInlineFlowBox();
m_lineBoxes.appendLineBox(flowBox);
return flowBox;
}
int RenderInline::lineHeight(bool firstLine, bool /*isRootLineBox*/) const
{
if (firstLine && document()->usesFirstLineRules()) {
RenderStyle* s = style(firstLine);
if (s != style())
return s->computedLineHeight();
}
if (m_lineHeight == -1)
m_lineHeight = style()->computedLineHeight();
return m_lineHeight;
}
int RenderInline::verticalPositionFromCache(bool firstLine) const
{
if (firstLine) // We're only really a first-line style if the document actually uses first-line rules.
firstLine = document()->usesFirstLineRules();
int vpos = m_verticalPosition;
if (m_verticalPosition == PositionUndefined || firstLine) {
vpos = verticalPosition(firstLine);
if (!firstLine)
m_verticalPosition = vpos;
}
return vpos;
}
IntSize RenderInline::relativePositionedInlineOffset(const RenderBox* child) const
{
ASSERT(isRelPositioned());
if (!isRelPositioned())
return IntSize();
// When we have an enclosing relpositioned inline, we need to add in the offset of the first line
// box from the rest of the content, but only in the cases where we know we're positioned
// relative to the inline itself.
IntSize offset;
int sx;
int sy;
if (firstLineBox()) {
sx = firstLineBox()->x();
sy = firstLineBox()->y();
} else {
sx = layer()->staticX();
sy = layer()->staticY();
}
if (!child->style()->hasStaticX())
offset.setWidth(sx);
// This is not terribly intuitive, but we have to match other browsers. Despite being a block display type inside
// an inline, we still keep our x locked to the left of the relative positioned inline. Arguably the correct
// behavior would be to go flush left to the block that contains the inline, but that isn't what other browsers
// do.
else if (!child->style()->isOriginalDisplayInlineType())
// Avoid adding in the left border/padding of the containing block twice. Subtract it out.
offset.setWidth(sx - (child->containingBlock()->borderLeft() + child->containingBlock()->paddingLeft()));
if (!child->style()->hasStaticY())
offset.setHeight(sy);
return offset;
}
void RenderInline::imageChanged(WrappedImagePtr, const IntRect*)
{
if (!parent())
return;
// FIXME: We can do better.
repaint();
}
void RenderInline::addFocusRingRects(Vector<IntRect>& rects, int tx, int ty)
{
for (InlineRunBox* curr = firstLineBox(); curr; curr = curr->nextLineBox()) {
RootInlineBox* root = curr->root();
int top = max(root->lineTop(), curr->y());
int bottom = min(root->lineBottom(), curr->y() + curr->height());
IntRect rect(tx + curr->x(), ty + top, curr->width(), bottom - top);
if (!rect.isEmpty())
rects.append(rect);
}
for (RenderObject* curr = firstChild(); curr; curr = curr->nextSibling()) {
if (!curr->isText() && !curr->isListMarker()) {
FloatPoint pos(tx, ty);
// FIXME: This doesn't work correctly with transforms.
if (curr->hasLayer())
pos = curr->localToAbsolute();
else if (curr->isBox())
pos.move(toRenderBox(curr)->x(), toRenderBox(curr)->y());
curr->addFocusRingRects(rects, pos.x(), pos.y());
}
}
if (continuation()) {
if (continuation()->isInline())
continuation()->addFocusRingRects(rects,
tx - containingBlock()->x() + continuation()->containingBlock()->x(),
ty - containingBlock()->y() + continuation()->containingBlock()->y());
else
continuation()->addFocusRingRects(rects,
tx - containingBlock()->x() + toRenderBox(continuation())->x(),
ty - containingBlock()->y() + toRenderBox(continuation())->y());
}
}
void RenderInline::paintOutline(GraphicsContext* graphicsContext, int tx, int ty)
{
if (!hasOutline())
return;
if (style()->outlineStyleIsAuto() || hasOutlineAnnotation()) {
int ow = style()->outlineWidth();
Color oc = style()->outlineColor();
if (!oc.isValid())
oc = style()->color();
Vector<IntRect> focusRingRects;
addFocusRingRects(focusRingRects, tx, ty);
if (style()->outlineStyleIsAuto())
graphicsContext->drawFocusRing(focusRingRects, ow, style()->outlineOffset(), oc);
else
addPDFURLRect(graphicsContext, unionRect(focusRingRects));
}
if (style()->outlineStyleIsAuto() || style()->outlineStyle() == BNONE)
return;
Vector<IntRect> rects;
rects.append(IntRect());
for (InlineRunBox* curr = firstLineBox(); curr; curr = curr->nextLineBox()) {
RootInlineBox* root = curr->root();
int top = max(root->lineTop(), curr->y());
int bottom = min(root->lineBottom(), curr->y() + curr->height());
rects.append(IntRect(curr->x(), top, curr->width(), bottom - top));
}
rects.append(IntRect());
for (unsigned i = 1; i < rects.size() - 1; i++)
paintOutlineForLine(graphicsContext, tx, ty, rects.at(i - 1), rects.at(i), rects.at(i + 1));
}
void RenderInline::paintOutlineForLine(GraphicsContext* graphicsContext, int tx, int ty,
const IntRect& lastline, const IntRect& thisline, const IntRect& nextline)
{
int ow = style()->outlineWidth();
EBorderStyle os = style()->outlineStyle();
Color oc = style()->outlineColor();
if (!oc.isValid())
oc = style()->color();
int offset = style()->outlineOffset();
int t = ty + thisline.y() - offset;
int l = tx + thisline.x() - offset;
int b = ty + thisline.bottom() + offset;
int r = tx + thisline.right() + offset;
// left edge
drawLineForBoxSide(graphicsContext,
l - ow,
t - (lastline.isEmpty() || thisline.x() < lastline.x() || (lastline.right() - 1) <= thisline.x() ? ow : 0),
l,
b + (nextline.isEmpty() || thisline.x() <= nextline.x() || (nextline.right() - 1) <= thisline.x() ? ow : 0),
BSLeft,
oc, style()->color(), os,
(lastline.isEmpty() || thisline.x() < lastline.x() || (lastline.right() - 1) <= thisline.x() ? ow : -ow),
(nextline.isEmpty() || thisline.x() <= nextline.x() || (nextline.right() - 1) <= thisline.x() ? ow : -ow));
// right edge
drawLineForBoxSide(graphicsContext,
r,
t - (lastline.isEmpty() || lastline.right() < thisline.right() || (thisline.right() - 1) <= lastline.x() ? ow : 0),
r + ow,
b + (nextline.isEmpty() || nextline.right() <= thisline.right() || (thisline.right() - 1) <= nextline.x() ? ow : 0),
BSRight,
oc, style()->color(), os,
(lastline.isEmpty() || lastline.right() < thisline.right() || (thisline.right() - 1) <= lastline.x() ? ow : -ow),
(nextline.isEmpty() || nextline.right() <= thisline.right() || (thisline.right() - 1) <= nextline.x() ? ow : -ow));
// upper edge
if (thisline.x() < lastline.x())
drawLineForBoxSide(graphicsContext,
l - ow,
t - ow,
min(r+ow, (lastline.isEmpty() ? 1000000 : tx + lastline.x())),
t ,
BSTop, oc, style()->color(), os,
ow,
(!lastline.isEmpty() && tx + lastline.x() + 1 < r + ow) ? -ow : ow);
if (lastline.right() < thisline.right())
drawLineForBoxSide(graphicsContext,
max(lastline.isEmpty() ? -1000000 : tx + lastline.right(), l - ow),
t - ow,
r + ow,
t ,
BSTop, oc, style()->color(), os,
(!lastline.isEmpty() && l - ow < tx + lastline.right()) ? -ow : ow,
ow);
// lower edge
if (thisline.x() < nextline.x())
drawLineForBoxSide(graphicsContext,
l - ow,
b,
min(r + ow, !nextline.isEmpty() ? tx + nextline.x() + 1 : 1000000),
b + ow,
BSBottom, oc, style()->color(), os,
ow,
(!nextline.isEmpty() && tx + nextline.x() + 1 < r + ow) ? -ow : ow);
if (nextline.right() < thisline.right())
drawLineForBoxSide(graphicsContext,
max(!nextline.isEmpty() ? tx + nextline.right() : -1000000, l - ow),
b,
r + ow,
b + ow,
BSBottom, oc, style()->color(), os,
(!nextline.isEmpty() && l - ow < tx + nextline.right()) ? -ow : ow,
ow);
}
#if ENABLE(DASHBOARD_SUPPORT)
void RenderInline::addDashboardRegions(Vector<DashboardRegionValue>& regions)
{
// Convert the style regions to absolute coordinates.
if (style()->visibility() != VISIBLE)
return;
const Vector<StyleDashboardRegion>& styleRegions = style()->dashboardRegions();
unsigned i, count = styleRegions.size();
for (i = 0; i < count; i++) {
StyleDashboardRegion styleRegion = styleRegions[i];
IntRect linesBoundingBox = this->linesBoundingBox();
int w = linesBoundingBox.width();
int h = linesBoundingBox.height();
DashboardRegionValue region;
region.label = styleRegion.label;
region.bounds = IntRect(linesBoundingBox.x() + styleRegion.offset.left().value(),
linesBoundingBox.y() + 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;
RenderObject* container = containingBlock();
if (!container)
container = this;
region.clip = region.bounds;
container->computeAbsoluteRepaintRect(region.clip);
if (region.clip.height() < 0) {
region.clip.setHeight(0);
region.clip.setWidth(0);
}
FloatPoint absPos = container->localToAbsolute();
region.bounds.setX(absPos.x() + region.bounds.x());
region.bounds.setY(absPos.y() + region.bounds.y());
if (document()->frame()) {
float pageScaleFactor = document()->frame()->page()->chrome()->scaleFactor();
if (pageScaleFactor != 1.0f) {
region.bounds.scale(pageScaleFactor);
region.clip.scale(pageScaleFactor);
}
}
regions.append(region);
}
}
#endif
} // namespace WebCore