IntRect RenderInline::clippedOverflowRectForRepaint(RenderBox* 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(linesBoundingBox());
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())
toRenderBox(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);
}
ASSERT(repaintContainer != this);
cb->computeRectForRepaint(r, repaintContainer);
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 RenderReplaced::selectionRect()
{
if (!isSelected())
return IntRect();
if (!m_inlineBoxWrapper)
// We're a block-level replaced element. Just return our own dimensions.
return absoluteBoundingBoxRect();
RenderBlock* cb = containingBlock();
if (!cb)
return IntRect();
RootInlineBox* root = m_inlineBoxWrapper->root();
int selectionTop = root->selectionTop();
int selectionHeight = root->selectionHeight();
int selectionLeft = xPos();
int selectionRight = xPos() + width();
int absx, absy;
cb->absolutePosition(absx, absy);
if (cb->hasOverflowClip())
cb->layer()->subtractScrollOffset(absx, absy);
return IntRect(selectionLeft + absx, selectionTop + absy, selectionRight - selectionLeft, selectionHeight);
}
QRect RenderFlow::getAbsoluteRepaintRect()
{
if (isInlineFlow()) {
// Find our leftmost position.
int left = 0;
int top = firstLineBox() ? firstLineBox()->yPos() : 0;
for (InlineRunBox* curr = firstLineBox(); curr; curr = curr->nextLineBox())
if (curr == firstLineBox() || curr->xPos() < left)
left = curr->xPos();
// Now invalidate a rectangle.
int ow = style() ? style()->outlineSize() : 0;
if (isCompact())
left -= m_x;
// 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->isInlineFlow() && inlineFlow != cb;
inlineFlow = inlineFlow->parent()) {
if (inlineFlow->style()->position() == RELATIVE && inlineFlow->layer())
inlineFlow->layer()->relativePositionOffset(left, top);
}
QRect r(-ow+left, -ow+top, width()+ow*2, height()+ow*2);
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.left();
int y = r.top();
QRect boxRect(0, 0, cb->layer()->width(), cb->layer()->height());
cb->layer()->subtractScrollOffset(x,y); // For overflow:auto/scroll/hidden.
QRect repaintRect(x, y, r.width(), r.height());
r = repaintRect.intersect(boxRect);
}
cb->computeAbsoluteRepaintRect(r);
if (ow) {
for (RenderObject* curr = firstChild(); curr; curr = curr->nextSibling()) {
if (!curr->isText()) {
QRect childRect = curr->getAbsoluteRepaintRectWithOutline(ow);
r = r.unite(childRect);
}
}
if (continuation() && !continuation()->isInline()) {
QRect contRect = continuation()->getAbsoluteRepaintRectWithOutline(ow);
r = r.unite(contRect);
}
}
return r;
}
else {
if (firstLineBox() && firstLineBox()->topOverflow() < 0) {
int ow = style() ? style()->outlineSize() : 0;
QRect r(-ow, -ow+firstLineBox()->topOverflow(),
overflowWidth(false)+ow*2,
overflowHeight(false)+ow*2-firstLineBox()->topOverflow());
computeAbsoluteRepaintRect(r);
return r;
}
}
return RenderContainer::getAbsoluteRepaintRect();
}
VisiblePosition nextLinePosition(const VisiblePosition &visiblePosition, int x)
{
Position p = visiblePosition.deepEquivalent();
Node *node = p.node();
Node* highestRoot = highestEditableRoot(p);
if (!node)
return VisiblePosition();
node->document()->updateLayoutIgnorePendingStylesheets();
RenderObject *renderer = node->renderer();
if (!renderer)
return VisiblePosition();
RenderBlock *containingBlock = 0;
RootInlineBox *root = 0;
InlineBox* box;
int ignoredCaretOffset;
visiblePosition.getInlineBoxAndOffset(box, ignoredCaretOffset);
if (box) {
root = box->root()->nextRootBox();
if (root)
containingBlock = renderer->containingBlock();
}
if (!root) {
// This containing editable block does not have a next line.
// Need to move forward to next containing editable block in this root editable
// block and find the first root line box in that block.
Node* startBlock = enclosingNodeWithNonInlineRenderer(node);
Node* n = nextLeafWithSameEditability(node, p.deprecatedEditingOffset());
while (n && startBlock == enclosingNodeWithNonInlineRenderer(n))
n = nextLeafWithSameEditability(n);
while (n) {
if (highestEditableRoot(Position(n, 0)) != highestRoot)
break;
Position pos(n, caretMinOffset(n));
if (pos.isCandidate()) {
ASSERT(n->renderer());
pos.getInlineBoxAndOffset(DOWNSTREAM, box, ignoredCaretOffset);
if (box) {
// next root line box found
root = box->root();
containingBlock = n->renderer()->containingBlock();
break;
}
return VisiblePosition(pos, DOWNSTREAM);
}
n = nextLeafWithSameEditability(n);
}
}
if (root) {
// FIXME: Can be wrong for multi-column layout and with transforms.
FloatPoint absPos = containingBlock->localToAbsolute(FloatPoint());
if (containingBlock->hasOverflowClip())
absPos -= containingBlock->layer()->scrolledContentOffset();
RenderObject* renderer = root->closestLeafChildForXPos(x - absPos.x(), isEditablePosition(p))->renderer();
Node* node = renderer->node();
if (node && editingIgnoresContent(node))
return Position(node->parent(), node->nodeIndex());
return renderer->positionForPoint(IntPoint(x - absPos.x(), root->lineTop()));
}
// Could not find a next line. This means we must already be on the last line.
// Move to the end of the content in this block, which effectively moves us
// to the end of the line we're on.
Element* rootElement = node->isContentEditable() ? node->rootEditableElement() : node->document()->documentElement();
return VisiblePosition(rootElement, rootElement ? rootElement->childNodeCount() : 0, DOWNSTREAM);
}
int Frame::checkOverflowScroll(OverflowScrollAction action)
{
Position extent = selection().selection().extent();
if (extent.isNull())
return OverflowScrollNone;
RenderObject* renderer = extent.deprecatedNode()->renderer();
if (!renderer)
return OverflowScrollNone;
FrameView* view = this->view();
if (!view)
return OverflowScrollNone;
RenderBlock* containingBlock = renderer->containingBlock();
if (!containingBlock || !containingBlock->hasOverflowClip())
return OverflowScrollNone;
RenderLayer* layer = containingBlock->layer();
ASSERT(layer);
IntRect visibleRect = IntRect(view->scrollX(), view->scrollY(), view->visibleWidth(), view->visibleHeight());
IntPoint position = m_overflowAutoScrollPos;
if (visibleRect.contains(position.x(), position.y()))
return OverflowScrollNone;
int scrollType = 0;
int deltaX = 0;
int deltaY = 0;
IntPoint selectionPosition;
// This constant will make the selection draw a little bit beyond the edge of the visible area.
// This prevents a visual glitch, in that you can fail to select a portion of a character that
// is being rendered right at the edge of the visible rectangle.
// FIXME: This probably needs improvement, and may need to take the font size into account.
static const int scrollBoundsAdjustment = 3;
// FIXME: Make a small buffer at the end of a visible rectangle so that autoscrolling works
// even if the visible extends to the limits of the screen.
if (position.x() < visibleRect.x()) {
scrollType |= OverflowScrollLeft;
if (action == PerformOverflowScroll) {
deltaX -= static_cast<int>(m_overflowAutoScrollDelta);
selectionPosition.setX(view->scrollX() - scrollBoundsAdjustment);
}
} else if (position.x() > visibleRect.maxX()) {
scrollType |= OverflowScrollRight;
if (action == PerformOverflowScroll) {
deltaX += static_cast<int>(m_overflowAutoScrollDelta);
selectionPosition.setX(view->scrollX() + view->visibleWidth() + scrollBoundsAdjustment);
}
}
if (position.y() < visibleRect.y()) {
scrollType |= OverflowScrollUp;
if (action == PerformOverflowScroll) {
deltaY -= static_cast<int>(m_overflowAutoScrollDelta);
selectionPosition.setY(view->scrollY() - scrollBoundsAdjustment);
}
} else if (position.y() > visibleRect.maxY()) {
scrollType |= OverflowScrollDown;
if (action == PerformOverflowScroll) {
deltaY += static_cast<int>(m_overflowAutoScrollDelta);
selectionPosition.setY(view->scrollY() + view->visibleHeight() + scrollBoundsAdjustment);
}
}
Ref<Frame> protectedThis(*this);
if (action == PerformOverflowScroll && (deltaX || deltaY)) {
layer->scrollToOffset(layer->scrollOffset() + IntSize(deltaX, deltaY));
// Handle making selection.
VisiblePosition visiblePosition(renderer->positionForPoint(selectionPosition, nullptr));
if (visiblePosition.isNotNull()) {
VisibleSelection visibleSelection = selection().selection();
visibleSelection.setExtent(visiblePosition);
if (selection().granularity() != CharacterGranularity)
visibleSelection.expandUsingGranularity(selection().granularity());
if (selection().shouldChangeSelection(visibleSelection))
selection().setSelection(visibleSelection);
}
m_overflowAutoScrollDelta *= 1.02f; // Accelerate the scroll
}
return scrollType;
}
VisiblePosition previousLinePosition(const VisiblePosition &visiblePosition, int x)
{
Position p = visiblePosition.deepEquivalent();
Node *node = p.node();
Node* highestRoot = highestEditableRoot(p);
if (!node)
return VisiblePosition();
node->document()->updateLayoutIgnorePendingStylesheets();
RenderObject *renderer = node->renderer();
if (!renderer)
return VisiblePosition();
RenderBlock *containingBlock = 0;
RootInlineBox *root = 0;
InlineBox* box;
int ignoredCaretOffset;
visiblePosition.getInlineBoxAndOffset(box, ignoredCaretOffset);
if (box) {
root = box->root()->prevRootBox();
if (root)
containingBlock = renderer->containingBlock();
}
if (!root) {
// This containing editable block does not have a previous line.
// Need to move back to previous containing editable block in this root editable
// block and find the last root line box in that block.
Node* startBlock = enclosingBlock(node);
Node* n = previousLeafWithSameEditability(node);
while (n && startBlock == enclosingBlock(n))
n = previousLeafWithSameEditability(n);
while (n) {
if (highestEditableRoot(Position(n, 0)) != highestRoot)
break;
Position pos(n, caretMinOffset(n));
if (pos.isCandidate()) {
ASSERT(n->renderer());
Position maxPos(n, caretMaxOffset(n));
maxPos.getInlineBoxAndOffset(DOWNSTREAM, box, ignoredCaretOffset);
if (box) {
// previous root line box found
root = box->root();
containingBlock = n->renderer()->containingBlock();
break;
}
return VisiblePosition(pos, DOWNSTREAM);
}
n = previousLeafWithSameEditability(n);
}
}
if (root) {
// FIXME: Can be wrong for multi-column layout.
int absx, absy;
containingBlock->absolutePositionForContent(absx, absy);
if (containingBlock->hasOverflowClip())
containingBlock->layer()->subtractScrollOffset(absx, absy);
RenderObject *renderer = root->closestLeafChildForXPos(x - absx, isEditablePosition(p))->object();
Node* node = renderer->element();
if (editingIgnoresContent(node))
return Position(node->parent(), node->nodeIndex());
return renderer->positionForCoordinates(x - absx, root->topOverflow());
}
// Could not find a previous line. This means we must already be on the first line.
// Move to the start of the content in this block, which effectively moves us
// to the start of the line we're on.
Node* rootElement = node->isContentEditable() ? node->rootEditableElement() : node->document()->documentElement();
return VisiblePosition(rootElement, 0, DOWNSTREAM);
}
