VisiblePosition RenderReplaced::positionForPoint(const IntPoint& point)
{
InlineBox* box = inlineBoxWrapper();
if (!box)
return createVisiblePosition(0, DOWNSTREAM);
// FIXME: This code is buggy if the replaced element is relative positioned.
RootInlineBox* root = box->root();
int top = root->lineTop();
int bottom = root->nextRootBox() ? root->nextRootBox()->lineTop() : root->lineBottom();
if (point.y() + y() < top)
return createVisiblePosition(caretMinOffset(), DOWNSTREAM); // coordinates are above
if (point.y() + y() >= bottom)
return createVisiblePosition(caretMaxOffset(), DOWNSTREAM); // coordinates are below
if (node()) {
if (point.x() <= width() / 2)
return createVisiblePosition(0, DOWNSTREAM);
return createVisiblePosition(1, DOWNSTREAM);
}
return RenderBox::positionForPoint(point);
}
bool RenderLineBoxList::lineIntersectsDirtyRect(RenderBoxModelObject* renderer, InlineFlowBox* box, const PaintInfo& paintInfo, const LayoutPoint& offset) const
{
RootInlineBox* root = box->root();
LayoutUnit logicalTop = min<LayoutUnit>(box->logicalTopVisualOverflow(root->lineTop()), root->selectionTop()) - renderer->maximalOutlineSize(paintInfo.phase);
LayoutUnit logicalBottom = box->logicalBottomVisualOverflow(root->lineBottom()) + renderer->maximalOutlineSize(paintInfo.phase);
return rangeIntersectsRect(renderer, logicalTop, logicalBottom, paintInfo.rect, offset);
}
bool RenderLineBoxList::anyLineIntersectsRect(RenderBoxModelObject* renderer, const LayoutRect& rect, const LayoutPoint& offset, bool usePrintRect, LayoutUnit outlineSize) const
{
// We can check the first box and last box and avoid painting/hit testing if we don't
// intersect. This is a quick short-circuit that we can take to avoid walking any lines.
// FIXME: This check is flawed in the following extremely obscure way:
// if some line in the middle has a huge overflow, it might actually extend below the last line.
RootInlineBox* firstRootBox = firstLineBox()->root();
RootInlineBox* lastRootBox = lastLineBox()->root();
LayoutUnit firstLineTop = firstLineBox()->logicalTopVisualOverflow(firstRootBox->lineTop());
if (usePrintRect && !firstLineBox()->parent())
firstLineTop = min(firstLineTop, firstLineBox()->root()->lineTop());
LayoutUnit lastLineBottom = lastLineBox()->logicalBottomVisualOverflow(lastRootBox->lineBottom());
if (usePrintRect && !lastLineBox()->parent())
lastLineBottom = max(lastLineBottom, lastLineBox()->root()->lineBottom());
LayoutUnit logicalTop = firstLineTop - outlineSize;
LayoutUnit logicalBottom = outlineSize + lastLineBottom;
return rangeIntersectsRect(renderer, logicalTop, logicalBottom, rect, offset);
}
void MinimumSpaceShortageFinder::examineLine(const RootInlineBox& line) {
LayoutUnit lineTop = line.lineTopWithLeading();
LayoutUnit lineTopInFlowThread = flowThreadOffset() + lineTop;
LayoutUnit lineHeight = line.lineBottomWithLeading() - lineTop;
if (m_pendingStrut != LayoutUnit::min()) {
// The previous break was before a breakable block. Here's the first line
// after / inside that block. We want to record the distance from the top of
// the column to the bottom of this box as space shortage.
LayoutUnit logicalOffsetFromCurrentColumn =
offsetFromColumnLogicalTop(lineTopInFlowThread);
recordSpaceShortage(logicalOffsetFromCurrentColumn + lineHeight -
m_pendingStrut);
m_pendingStrut = LayoutUnit::min();
return;
}
ASSERT(
isFirstAfterBreak(lineTopInFlowThread) || !line.paginationStrut() ||
!isLogicalTopWithinBounds(lineTopInFlowThread - line.paginationStrut()));
if (isFirstAfterBreak(lineTopInFlowThread))
recordSpaceShortage(lineHeight - line.paginationStrut());
// Even if the line box itself fits fine inside a column, some content may
// overflow the line box bottom (due to restrictive line-height, for
// instance). We should check if some portion of said overflow ends up in the
// next column. That counts as space shortage.
const MultiColumnFragmentainerGroup& group =
groupAtOffset(lineTopInFlowThread);
LayoutUnit lineBottomWithOverflow =
lineTopInFlowThread + line.lineBottom() - lineTop;
if (group.columnLogicalTopForOffset(lineTopInFlowThread) !=
group.columnLogicalTopForOffset(lineBottomWithOverflow)) {
LayoutUnit shortage =
lineBottomWithOverflow -
group.columnLogicalTopForOffset(lineBottomWithOverflow);
recordSpaceShortage(shortage);
}
}
void RenderListItem::positionListMarker()
{
if (m_marker && m_marker->parent()->isBox() && !m_marker->isInside() && m_marker->inlineBoxWrapper()) {
LayoutUnit markerOldLogicalLeft = m_marker->logicalLeft();
LayoutUnit blockOffset = 0;
LayoutUnit lineOffset = 0;
for (RenderBox* o = m_marker->parentBox(); o != this; o = o->parentBox()) {
blockOffset += o->logicalTop();
lineOffset += o->logicalLeft();
}
bool adjustOverflow = false;
LayoutUnit markerLogicalLeft;
RootInlineBox* root = m_marker->inlineBoxWrapper()->root();
bool hitSelfPaintingLayer = false;
RootInlineBox* rootBox = m_marker->inlineBoxWrapper()->root();
LayoutUnit lineTop = rootBox->lineTop();
LayoutUnit lineBottom = rootBox->lineBottom();
// FIXME: Need to account for relative positioning in the layout overflow.
if (style()->isLeftToRightDirection()) {
LayoutUnit leftLineOffset = logicalLeftOffsetForLine(blockOffset, logicalLeftOffsetForLine(blockOffset, false), false);
markerLogicalLeft = leftLineOffset - lineOffset - paddingStart() - borderStart() + m_marker->marginStart();
m_marker->inlineBoxWrapper()->adjustLineDirectionPosition(markerLogicalLeft - markerOldLogicalLeft);
for (InlineFlowBox* box = m_marker->inlineBoxWrapper()->parent(); box; box = box->parent()) {
LayoutRect newLogicalVisualOverflowRect = box->logicalVisualOverflowRect(lineTop, lineBottom);
LayoutRect newLogicalLayoutOverflowRect = box->logicalLayoutOverflowRect(lineTop, lineBottom);
if (markerLogicalLeft < newLogicalVisualOverflowRect.x() && !hitSelfPaintingLayer) {
newLogicalVisualOverflowRect.setWidth(newLogicalVisualOverflowRect.maxX() - markerLogicalLeft);
newLogicalVisualOverflowRect.setX(markerLogicalLeft);
if (box == root)
adjustOverflow = true;
}
if (markerLogicalLeft < newLogicalLayoutOverflowRect.x()) {
newLogicalLayoutOverflowRect.setWidth(newLogicalLayoutOverflowRect.maxX() - markerLogicalLeft);
newLogicalLayoutOverflowRect.setX(markerLogicalLeft);
if (box == root)
adjustOverflow = true;
}
box->setOverflowFromLogicalRects(newLogicalLayoutOverflowRect, newLogicalVisualOverflowRect, lineTop, lineBottom);
if (box->boxModelObject()->hasSelfPaintingLayer())
hitSelfPaintingLayer = true;
}
} else {
LayoutUnit rightLineOffset = logicalRightOffsetForLine(blockOffset, logicalRightOffsetForLine(blockOffset, false), false);
markerLogicalLeft = rightLineOffset - lineOffset + paddingStart() + borderStart() + m_marker->marginEnd();
m_marker->inlineBoxWrapper()->adjustLineDirectionPosition(markerLogicalLeft - markerOldLogicalLeft);
for (InlineFlowBox* box = m_marker->inlineBoxWrapper()->parent(); box; box = box->parent()) {
LayoutRect newLogicalVisualOverflowRect = box->logicalVisualOverflowRect(lineTop, lineBottom);
LayoutRect newLogicalLayoutOverflowRect = box->logicalLayoutOverflowRect(lineTop, lineBottom);
if (markerLogicalLeft + m_marker->logicalWidth() > newLogicalVisualOverflowRect.maxX() && !hitSelfPaintingLayer) {
newLogicalVisualOverflowRect.setWidth(markerLogicalLeft + m_marker->logicalWidth() - newLogicalVisualOverflowRect.x());
if (box == root)
adjustOverflow = true;
}
if (markerLogicalLeft + m_marker->logicalWidth() > newLogicalLayoutOverflowRect.maxX()) {
newLogicalLayoutOverflowRect.setWidth(markerLogicalLeft + m_marker->logicalWidth() - newLogicalLayoutOverflowRect.x());
if (box == root)
adjustOverflow = true;
}
box->setOverflowFromLogicalRects(newLogicalLayoutOverflowRect, newLogicalVisualOverflowRect, lineTop, lineBottom);
if (box->boxModelObject()->hasSelfPaintingLayer())
hitSelfPaintingLayer = true;
}
}
if (adjustOverflow) {
LayoutRect markerRect(markerLogicalLeft + lineOffset, blockOffset, m_marker->width(), m_marker->height());
if (!style()->isHorizontalWritingMode())
markerRect = markerRect.transposedRect();
RenderBox* o = m_marker;
bool propagateVisualOverflow = true;
bool propagateLayoutOverflow = true;
do {
o = o->parentBox();
if (o->isRenderBlock()) {
if (propagateVisualOverflow)
toRenderBlock(o)->addContentsVisualOverflow(markerRect);
if (propagateLayoutOverflow)
toRenderBlock(o)->addLayoutOverflow(markerRect);
}
if (o->hasOverflowClip()) {
propagateLayoutOverflow = false;
propagateVisualOverflow = false;
}
if (o->hasSelfPaintingLayer())
propagateVisualOverflow = false;
markerRect.moveBy(-o->location());
} while (o != this && propagateVisualOverflow && propagateLayoutOverflow);
}
}
}
void RenderLineBoxList::readyWRATHWidgets(PaintedWidgetsOfWRATHHandle &handle,
RenderBoxModelObject *renderer,
PaintInfoOfWRATH &paintInfo, int tx, int ty)
{
RenderLineBoxList_WRATHWidgets *d;
d=RenderLineBoxList_WRATHWidgets::object(renderer, handle);
ContextOfWRATH::AutoPushNode autoPushRoot(paintInfo.wrath_context, d->m_root_node);
/*
this just.. sucks. WebKit builds a list of
RenderInline objects that it will draw outlines.
It is not clear if and how that list changes,
so we punt and make all them handle non-visible
and only those that are found in the list
are then made visible.
*/
d->m_handles.hideEachObject();
d->m_outlineHandles.hideEachObject();
// Only paint during the foreground/selection phases.
if (paintInfo.phase != PaintPhaseForeground && paintInfo.phase != PaintPhaseSelection && paintInfo.phase != PaintPhaseOutline
&& paintInfo.phase != PaintPhaseSelfOutline && paintInfo.phase != PaintPhaseChildOutlines && paintInfo.phase != PaintPhaseTextClip
&& paintInfo.phase != PaintPhaseMask)
return;
ASSERT(renderer->isRenderBlock() || (renderer->isRenderInline() && renderer->hasLayer())); // The only way an inline could paint like this is if it has a layer.
// If we have no lines then we have no work to do.
if (!firstLineBox())
return;
RenderView* v = renderer->view();
bool usePrintRect = !v->printRect().isEmpty();
int outlineSize = renderer->maximalOutlineSize(paintInfo.phase);
if (!anyLineIntersectsRect(renderer, paintInfo.rect, tx, ty, usePrintRect, outlineSize))
return;
PaintInfoOfWRATH info(paintInfo);
ListHashSet<RenderInline*> outlineObjects;
info.outlineObjects = &outlineObjects;
for (InlineFlowBox* curr = firstLineBox(); curr; curr = curr->nextLineBox()) {
if (usePrintRect) {
RootInlineBox* root = curr->root();
int topForPaginationCheck = curr->logicalTopVisualOverflow(root->lineTop());
int bottomForPaginationCheck = curr->logicalLeftVisualOverflow();
if (!curr->parent()) {
// We're a root box. Use lineTop and lineBottom as well here.
topForPaginationCheck = min(topForPaginationCheck, root->lineTop());
bottomForPaginationCheck = max(bottomForPaginationCheck, root->lineBottom());
}
if (bottomForPaginationCheck - topForPaginationCheck <= v->printRect().height()) {
if (ty + bottomForPaginationCheck > v->printRect().maxY()) {
if (RootInlineBox* nextRootBox = curr->root()->nextRootBox())
bottomForPaginationCheck = min(bottomForPaginationCheck, min(nextRootBox->logicalTopVisualOverflow(), nextRootBox->lineTop()));
}
if (ty + bottomForPaginationCheck > v->printRect().maxY()) {
if (ty + topForPaginationCheck < v->truncatedAt())
v->setBestTruncatedAt(ty + topForPaginationCheck, renderer);
// If we were able to truncate, don't paint.
if (ty + topForPaginationCheck >= v->truncatedAt())
break;
}
}
}
if (lineIntersectsDirtyRect(renderer, curr, info, tx, ty)) {
RootInlineBox* root = curr->root();
PaintedWidgetsOfWRATHHandleT<InlineBox> &currHandle(d->m_handles.getHandle(curr));
currHandle.visible(true);
curr->readyWRATHWidgets(currHandle, info, tx, ty, root->lineTop(), root->lineBottom());
}
}
if (info.phase == PaintPhaseOutline || info.phase == PaintPhaseSelfOutline || info.phase == PaintPhaseChildOutlines) {
ListHashSet<RenderInline*>::iterator end = info.outlineObjects->end();
for (ListHashSet<RenderInline*>::iterator it = info.outlineObjects->begin(); it != end; ++it) {
RenderInline* flow = *it;
PaintedWidgetsOfWRATHHandle &handle(d->m_outlineHandles.getHandle(flow));
handle.visible(true);
flow->readyWRATHWidgetOutline(handle, info.wrath_context, tx, ty);
}
info.outlineObjects->clear();
}
d->m_handles.removeNonVisibleHandles();
d->m_outlineHandles.removeNonVisibleHandles();
}
bool RenderLineBoxList::hitTest(RenderBoxModelObject* renderer, const HitTestRequest& request, HitTestResult& result, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction hitTestAction) const
{
if (hitTestAction != HitTestForeground)
return false;
ASSERT(renderer->isRenderBlock() || (renderer->isRenderInline() && renderer->hasLayer())); // The only way an inline could hit test like this is if it has a layer.
// If we have no lines then we have no work to do.
if (!firstLineBox())
return false;
LayoutPoint point = locationInContainer.point();
LayoutRect rect = firstLineBox()->isHorizontal() ?
IntRect(point.x(), point.y() - locationInContainer.topPadding(), 1, locationInContainer.topPadding() + locationInContainer.bottomPadding() + 1) :
IntRect(point.x() - locationInContainer.leftPadding(), point.y(), locationInContainer.rightPadding() + locationInContainer.leftPadding() + 1, 1);
if (!anyLineIntersectsRect(renderer, rect, accumulatedOffset))
return false;
// See if our root lines contain the point. If so, then we hit test
// them further. Note that boxes can easily overlap, so we can't make any assumptions
// based off positions of our first line box or our last line box.
for (InlineFlowBox* curr = lastLineBox(); curr; curr = curr->prevLineBox()) {
RootInlineBox* root = curr->root();
if (rangeIntersectsRect(renderer, curr->logicalTopVisualOverflow(root->lineTop()), curr->logicalBottomVisualOverflow(root->lineBottom()), rect, accumulatedOffset)) {
bool inside = curr->nodeAtPoint(request, result, locationInContainer, accumulatedOffset, root->lineTop(), root->lineBottom());
if (inside) {
renderer->updateHitTestResult(result, locationInContainer.point() - toLayoutSize(accumulatedOffset));
return true;
}
}
}
return false;
}
void RenderLineBoxList::paint(RenderBoxModelObject* renderer, PaintInfo& paintInfo, const LayoutPoint& paintOffset) const
{
// Only paint during the foreground/selection phases.
if (paintInfo.phase != PaintPhaseForeground && paintInfo.phase != PaintPhaseSelection && paintInfo.phase != PaintPhaseOutline
&& paintInfo.phase != PaintPhaseSelfOutline && paintInfo.phase != PaintPhaseChildOutlines && paintInfo.phase != PaintPhaseTextClip
&& paintInfo.phase != PaintPhaseMask)
return;
ASSERT(renderer->isRenderBlock() || (renderer->isRenderInline() && renderer->hasLayer())); // The only way an inline could paint like this is if it has a layer.
// If we have no lines then we have no work to do.
if (!firstLineBox())
return;
// FIXME: Paint-time pagination is obsolete and is now only used by embedded WebViews inside AppKit
// NSViews. Do not add any more code for this.
RenderView* v = renderer->view();
bool usePrintRect = !v->printRect().isEmpty();
LayoutUnit outlineSize = renderer->maximalOutlineSize(paintInfo.phase);
if (!anyLineIntersectsRect(renderer, paintInfo.rect, paintOffset, usePrintRect, outlineSize))
return;
PaintInfo info(paintInfo);
ListHashSet<RenderInline*> outlineObjects;
info.outlineObjects = &outlineObjects;
// See if our root lines intersect with the dirty rect. If so, then we paint
// them. Note that boxes can easily overlap, so we can't make any assumptions
// based off positions of our first line box or our last line box.
for (InlineFlowBox* curr = firstLineBox(); curr; curr = curr->nextLineBox()) {
if (usePrintRect) {
// FIXME: This is the deprecated pagination model that is still needed
// for embedded views inside AppKit. AppKit is incapable of paginating vertical
// text pages, so we don't have to deal with vertical lines at all here.
RootInlineBox* root = curr->root();
LayoutUnit topForPaginationCheck = curr->logicalTopVisualOverflow(root->lineTop());
LayoutUnit bottomForPaginationCheck = curr->logicalLeftVisualOverflow();
if (!curr->parent()) {
// We're a root box. Use lineTop and lineBottom as well here.
topForPaginationCheck = min(topForPaginationCheck, root->lineTop());
bottomForPaginationCheck = max(bottomForPaginationCheck, root->lineBottom());
}
if (bottomForPaginationCheck - topForPaginationCheck <= v->printRect().height()) {
if (paintOffset.y() + bottomForPaginationCheck > v->printRect().maxY()) {
if (RootInlineBox* nextRootBox = curr->root()->nextRootBox())
bottomForPaginationCheck = min(bottomForPaginationCheck, min<LayoutUnit>(nextRootBox->logicalTopVisualOverflow(), nextRootBox->lineTop()));
}
if (paintOffset.y() + bottomForPaginationCheck > v->printRect().maxY()) {
if (paintOffset.y() + topForPaginationCheck < v->truncatedAt())
v->setBestTruncatedAt(paintOffset.y() + topForPaginationCheck, renderer);
// If we were able to truncate, don't paint.
if (paintOffset.y() + topForPaginationCheck >= v->truncatedAt())
break;
}
}
}
if (lineIntersectsDirtyRect(renderer, curr, info, paintOffset)) {
RootInlineBox* root = curr->root();
curr->paint(info, paintOffset, root->lineTop(), root->lineBottom());
}
}
if (info.phase == PaintPhaseOutline || info.phase == PaintPhaseSelfOutline || info.phase == PaintPhaseChildOutlines) {
ListHashSet<RenderInline*>::iterator end = info.outlineObjects->end();
for (ListHashSet<RenderInline*>::iterator it = info.outlineObjects->begin(); it != end; ++it) {
RenderInline* flow = *it;
flow->paintOutline(info, paintOffset);
}
info.outlineObjects->clear();
}
}