bool LineBoxList::hitTest(LayoutBoxModelObject* renderer, HitTestResult& result, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset, HitTestAction hitTestAction) const
{
if (hitTestAction != HitTestForeground)
return false;
ASSERT(renderer->isLayoutBlock() || (renderer->isLayoutInline() && 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(result, locationInContainer, accumulatedOffset, root.lineTop(), root.lineBottom());
if (inside) {
renderer->updateHitTestResult(result, locationInContainer.point() - toLayoutSize(accumulatedOffset));
return true;
}
}
}
return false;
}
bool RenderLineBoxList::lineIntersectsDirtyRect(RenderBoxModelObject* renderer, InlineFlowBox* box, const PaintInfo& paintInfo, const LayoutPoint& offset) const
{
const RootInlineBox& rootBox = box->root();
LayoutUnit logicalTop = std::min(box->logicalTopVisualOverflow(rootBox.lineTop()), rootBox.selectionTop());
LayoutUnit logicalBottom = box->logicalBottomVisualOverflow(rootBox.lineBottom());
return rangeIntersectsRect(renderer, logicalTop, logicalBottom, paintInfo.rect, offset);
}
bool LineBoxList::lineIntersectsDirtyRect(LayoutBoxModelObject* layoutObject, InlineFlowBox* box, const PaintInfo& paintInfo, const LayoutPoint& offset) const
{
RootInlineBox& root = box->root();
LayoutUnit logicalTop = std::min<LayoutUnit>(box->logicalTopVisualOverflow(root.lineTop()), root.selectionTop());
LayoutUnit logicalBottom = box->logicalBottomVisualOverflow(root.lineBottom());
return rangeIntersectsRect(layoutObject, logicalTop, logicalBottom, LayoutRect(paintInfo.rect), offset);
}
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 LineBoxList::anyLineIntersectsRect(LayoutBoxModelObject* renderer, const LayoutRect& rect, const LayoutPoint& offset) 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());
LayoutUnit lastLineBottom = lastLineBox()->logicalBottomVisualOverflow(lastRootBox.lineBottom());
return rangeIntersectsRect(renderer, firstLineTop, lastLineBottom, rect, offset);
}
