NS_IMETHODIMP
nsFirstLetterFrame::Reflow(nsPresContext* aPresContext,
nsHTMLReflowMetrics& aMetrics,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aReflowStatus)
{
DO_GLOBAL_REFLOW_COUNT("nsFirstLetterFrame");
DISPLAY_REFLOW(aPresContext, this, aReflowState, aMetrics, aReflowStatus);
nsresult rv = NS_OK;
// Grab overflow list
DrainOverflowFrames(aPresContext);
nsIFrame* kid = mFrames.FirstChild();
// Setup reflow state for our child
nsSize availSize(aReflowState.availableWidth, aReflowState.availableHeight);
const nsMargin& bp = aReflowState.mComputedBorderPadding;
nscoord lr = bp.left + bp.right;
nscoord tb = bp.top + bp.bottom;
NS_ASSERTION(availSize.width != NS_UNCONSTRAINEDSIZE,
"should no longer use unconstrained widths");
availSize.width -= lr;
if (NS_UNCONSTRAINEDSIZE != availSize.height) {
availSize.height -= tb;
}
// Reflow the child
if (!aReflowState.mLineLayout) {
// When there is no lineLayout provided, we provide our own. The
// only time that the first-letter-frame is not reflowing in a
// line context is when its floating.
nsHTMLReflowState rs(aPresContext, aReflowState, kid, availSize);
nsLineLayout ll(aPresContext, nsnull, &aReflowState, nsnull);
// For unicode-bidi: plaintext, we need to get the direction of the line
// from the resolved paragraph level of the child, not the block frame,
// because the block frame could be split by hard line breaks into
// multiple paragraphs with different base direction
PRUint8 direction;
nsIFrame* containerFrame = ll.GetLineContainerFrame();
if (containerFrame->GetStyleTextReset()->mUnicodeBidi &
NS_STYLE_UNICODE_BIDI_PLAINTEXT) {
FramePropertyTable *propTable = aPresContext->PropertyTable();
direction = NS_PTR_TO_INT32(propTable->Get(kid, BaseLevelProperty())) & 1;
} else {
direction = containerFrame->GetStyleVisibility()->mDirection;
}
ll.BeginLineReflow(bp.left, bp.top, availSize.width, NS_UNCONSTRAINEDSIZE,
false, true, direction);
rs.mLineLayout = ≪
ll.SetInFirstLetter(true);
ll.SetFirstLetterStyleOK(true);
kid->WillReflow(aPresContext);
kid->Reflow(aPresContext, aMetrics, rs, aReflowStatus);
ll.EndLineReflow();
ll.SetInFirstLetter(false);
// In the floating first-letter case, we need to set this ourselves;
// nsLineLayout::BeginSpan will set it in the other case
mBaseline = aMetrics.ascent;
}
else {
// Pretend we are a span and reflow the child frame
nsLineLayout* ll = aReflowState.mLineLayout;
bool pushedFrame;
ll->SetInFirstLetter(
mStyleContext->GetPseudo() == nsCSSPseudoElements::firstLetter);
ll->BeginSpan(this, &aReflowState, bp.left, availSize.width, &mBaseline);
ll->ReflowFrame(kid, aReflowStatus, &aMetrics, pushedFrame);
ll->EndSpan(this);
ll->SetInFirstLetter(false);
}
// Place and size the child and update the output metrics
kid->SetRect(nsRect(bp.left, bp.top, aMetrics.width, aMetrics.height));
kid->FinishAndStoreOverflow(&aMetrics);
kid->DidReflow(aPresContext, nsnull, NS_FRAME_REFLOW_FINISHED);
aMetrics.width += lr;
aMetrics.height += tb;
aMetrics.ascent += bp.top;
// Ensure that the overflow rect contains the child textframe's overflow rect.
// Note that if this is floating, the overline/underline drawable area is in
// the overflow rect of the child textframe.
aMetrics.UnionOverflowAreasWithDesiredBounds();
ConsiderChildOverflow(aMetrics.mOverflowAreas, kid);
if (!NS_INLINE_IS_BREAK_BEFORE(aReflowStatus)) {
// Create a continuation or remove existing continuations based on
// the reflow completion status.
if (NS_FRAME_IS_COMPLETE(aReflowStatus)) {
if (aReflowState.mLineLayout) {
aReflowState.mLineLayout->SetFirstLetterStyleOK(false);
}
nsIFrame* kidNextInFlow = kid->GetNextInFlow();
if (kidNextInFlow) {
// Remove all of the childs next-in-flows
static_cast<nsContainerFrame*>(kidNextInFlow->GetParent())
->DeleteNextInFlowChild(aPresContext, kidNextInFlow, true);
}
}
else {
// Create a continuation for the child frame if it doesn't already
// have one.
if (!IsFloating()) {
nsIFrame* nextInFlow;
rv = CreateNextInFlow(aPresContext, kid, nextInFlow);
if (NS_FAILED(rv)) {
return rv;
}
// And then push it to our overflow list
const nsFrameList& overflow = mFrames.RemoveFramesAfter(kid);
if (overflow.NotEmpty()) {
SetOverflowFrames(aPresContext, overflow);
}
} else if (!kid->GetNextInFlow()) {
// For floating first letter frames (if a continuation wasn't already
// created for us) we need to put the continuation with the rest of the
// text that the first letter frame was made out of.
nsIFrame* continuation;
rv = CreateContinuationForFloatingParent(aPresContext, kid,
&continuation, true);
}
}
}
FinishAndStoreOverflow(&aMetrics);
NS_FRAME_SET_TRUNCATION(aReflowStatus, aReflowState, aMetrics);
return rv;
}
nsresult
RestyleManagerBase::ProcessRestyledFrames(nsStyleChangeList& aChangeList)
{
NS_ASSERTION(!nsContentUtils::IsSafeToRunScript(),
"Someone forgot a script blocker");
int32_t count = aChangeList.Count();
if (!count)
return NS_OK;
PROFILER_LABEL("RestyleManager", "ProcessRestyledFrames",
js::ProfileEntry::Category::CSS);
nsPresContext* presContext = PresContext();
FramePropertyTable* propTable = presContext->PropertyTable();
nsCSSFrameConstructor* frameConstructor = presContext->FrameConstructor();
// Make sure to not rebuild quote or counter lists while we're
// processing restyles
frameConstructor->BeginUpdate();
// Mark frames so that we skip frames that die along the way, bug 123049.
// A frame can be in the list multiple times with different hints. Further
// optmization is possible if nsStyleChangeList::AppendChange could coalesce
int32_t index = count;
while (0 <= --index) {
const nsStyleChangeData* changeData;
aChangeList.ChangeAt(index, &changeData);
if (changeData->mFrame) {
propTable->Set(changeData->mFrame, ChangeListProperty(), true);
}
}
index = count;
bool didUpdateCursor = false;
while (0 <= --index) {
nsIFrame* frame;
nsIContent* content;
bool didReflowThisFrame = false;
nsChangeHint hint;
aChangeList.ChangeAt(index, frame, content, hint);
NS_ASSERTION(!(hint & nsChangeHint_AllReflowHints) ||
(hint & nsChangeHint_NeedReflow),
"Reflow hint bits set without actually asking for a reflow");
// skip any frame that has been destroyed due to a ripple effect
if (frame && !propTable->Get(frame, ChangeListProperty())) {
continue;
}
if (frame && frame->GetContent() != content) {
// XXXbz this is due to image maps messing with the primary frame of
// <area>s. See bug 135040. Remove this block once that's fixed.
frame = nullptr;
if (!(hint & nsChangeHint_ReconstructFrame)) {
continue;
}
}
if ((hint & nsChangeHint_UpdateContainingBlock) && frame &&
!(hint & nsChangeHint_ReconstructFrame)) {
if (NeedToReframeForAddingOrRemovingTransform(frame) ||
frame->GetType() == nsGkAtoms::fieldSetFrame ||
frame->GetContentInsertionFrame() != frame) {
// The frame has positioned children that need to be reparented, or
// it can't easily be converted to/from being an abs-pos container correctly.
hint |= nsChangeHint_ReconstructFrame;
} else {
for (nsIFrame* cont = frame; cont;
cont = nsLayoutUtils::GetNextContinuationOrIBSplitSibling(cont)) {
// Normally frame construction would set state bits as needed,
// but we're not going to reconstruct the frame so we need to set them.
// It's because we need to set this state on each affected frame
// that we can't coalesce nsChangeHint_UpdateContainingBlock hints up
// to ancestors (i.e. it can't be an inherited change hint).
if (cont->IsAbsPosContaininingBlock()) {
if (cont->StyleDisplay()->HasTransform(cont)) {
cont->AddStateBits(NS_FRAME_MAY_BE_TRANSFORMED);
}
if (!cont->IsAbsoluteContainer() &&
(cont->GetStateBits() & NS_FRAME_CAN_HAVE_ABSPOS_CHILDREN)) {
cont->MarkAsAbsoluteContainingBlock();
}
} else {
// Don't remove NS_FRAME_MAY_BE_TRANSFORMED since it may still by
// transformed by other means. It's OK to have the bit even if it's
// not needed.
if (cont->IsAbsoluteContainer()) {
cont->MarkAsNotAbsoluteContainingBlock();
}
}
}
}
}
if (hint & nsChangeHint_ReconstructFrame) {
// If we ever start passing true here, be careful of restyles
// that involve a reframe and animations. In particular, if the
// restyle we're processing here is an animation restyle, but
// the style resolution we will do for the frame construction
// happens async when we're not in an animation restyle already,
// problems could arise.
// We could also have problems with triggering of CSS transitions
// on elements whose frames are reconstructed, since we depend on
// the reconstruction happening synchronously.
frameConstructor->RecreateFramesForContent(content, false,
nsCSSFrameConstructor::REMOVE_FOR_RECONSTRUCTION, nullptr);
} else {
NS_ASSERTION(frame, "This shouldn't happen");
if (!frame->FrameMaintainsOverflow()) {
// frame does not maintain overflow rects, so avoid calling
// FinishAndStoreOverflow on it:
hint &= ~(nsChangeHint_UpdateOverflow |
nsChangeHint_ChildrenOnlyTransform |
nsChangeHint_UpdatePostTransformOverflow |
nsChangeHint_UpdateParentOverflow);
}
if (!(frame->GetStateBits() & NS_FRAME_MAY_BE_TRANSFORMED)) {
// Frame can not be transformed, and thus a change in transform will
// have no effect and we should not use the
// nsChangeHint_UpdatePostTransformOverflow hint.
hint &= ~nsChangeHint_UpdatePostTransformOverflow;
}
if (hint & nsChangeHint_UpdateEffects) {
for (nsIFrame* cont = frame; cont;
cont = nsLayoutUtils::GetNextContinuationOrIBSplitSibling(cont)) {
nsSVGEffects::UpdateEffects(cont);
}
}
if ((hint & nsChangeHint_InvalidateRenderingObservers) ||
((hint & nsChangeHint_UpdateOpacityLayer) &&
frame->IsFrameOfType(nsIFrame::eSVG) &&
!(frame->GetStateBits() & NS_STATE_IS_OUTER_SVG))) {
nsSVGEffects::InvalidateRenderingObservers(frame);
}
if (hint & nsChangeHint_NeedReflow) {
StyleChangeReflow(frame, hint);
didReflowThisFrame = true;
}
if ((hint & nsChangeHint_UpdateUsesOpacity) &&
frame->IsFrameOfType(nsIFrame::eTablePart)) {
NS_ASSERTION(hint & nsChangeHint_UpdateOpacityLayer,
"should only return UpdateUsesOpacity hint "
"when also returning UpdateOpacityLayer hint");
// When an internal table part (including cells) changes between
// having opacity 1 and non-1, it changes whether its
// backgrounds (and those of table parts inside of it) are
// painted as part of the table's nsDisplayTableBorderBackground
// display item, or part of its own display item. That requires
// invalidation, so change UpdateOpacityLayer to RepaintFrame.
hint &= ~nsChangeHint_UpdateOpacityLayer;
hint |= nsChangeHint_RepaintFrame;
}
if (hint & nsChangeHint_UpdateBackgroundPosition) {
// For most frame types, DLBI can detect background position changes,
// so we only need to schedule a paint.
hint |= nsChangeHint_SchedulePaint;
if (frame->IsFrameOfType(nsIFrame::eTablePart) ||
frame->IsFrameOfType(nsIFrame::eMathML)) {
// Table parts and MathML frames don't build display items for their
// backgrounds, so DLBI can't detect background-position changes for
// these frames. Repaint the whole frame.
hint |= nsChangeHint_RepaintFrame;
}
}
if (hint & (nsChangeHint_RepaintFrame | nsChangeHint_SyncFrameView |
nsChangeHint_UpdateOpacityLayer | nsChangeHint_UpdateTransformLayer |
nsChangeHint_ChildrenOnlyTransform | nsChangeHint_SchedulePaint)) {
ApplyRenderingChangeToTree(presContext->PresShell(), frame, hint);
}
if ((hint & nsChangeHint_RecomputePosition) && !didReflowThisFrame) {
ActiveLayerTracker::NotifyOffsetRestyle(frame);
// It is possible for this to fall back to a reflow
if (!RecomputePosition(frame)) {
didReflowThisFrame = true;
}
}
NS_ASSERTION(!(hint & nsChangeHint_ChildrenOnlyTransform) ||
(hint & nsChangeHint_UpdateOverflow),
"nsChangeHint_UpdateOverflow should be passed too");
if (!didReflowThisFrame &&
(hint & (nsChangeHint_UpdateOverflow |
nsChangeHint_UpdatePostTransformOverflow |
nsChangeHint_UpdateParentOverflow |
nsChangeHint_UpdateSubtreeOverflow))) {
if (hint & nsChangeHint_UpdateSubtreeOverflow) {
for (nsIFrame* cont = frame; cont; cont =
nsLayoutUtils::GetNextContinuationOrIBSplitSibling(cont)) {
AddSubtreeToOverflowTracker(cont, mOverflowChangedTracker);
}
// The work we just did in AddSubtreeToOverflowTracker
// subsumes some of the other hints:
hint &= ~(nsChangeHint_UpdateOverflow |
nsChangeHint_UpdatePostTransformOverflow);
}
if (hint & nsChangeHint_ChildrenOnlyTransform) {
// The overflow areas of the child frames need to be updated:
nsIFrame* hintFrame = GetFrameForChildrenOnlyTransformHint(frame);
nsIFrame* childFrame = hintFrame->PrincipalChildList().FirstChild();
NS_ASSERTION(!nsLayoutUtils::GetNextContinuationOrIBSplitSibling(frame),
"SVG frames should not have continuations "
"or ib-split siblings");
NS_ASSERTION(!nsLayoutUtils::GetNextContinuationOrIBSplitSibling(hintFrame),
"SVG frames should not have continuations "
"or ib-split siblings");
for ( ; childFrame; childFrame = childFrame->GetNextSibling()) {
MOZ_ASSERT(childFrame->IsFrameOfType(nsIFrame::eSVG),
"Not expecting non-SVG children");
// If |childFrame| is dirty or has dirty children, we don't bother
// updating overflows since that will happen when it's reflowed.
if (!(childFrame->GetStateBits() &
(NS_FRAME_IS_DIRTY | NS_FRAME_HAS_DIRTY_CHILDREN))) {
mOverflowChangedTracker.AddFrame(childFrame,
OverflowChangedTracker::CHILDREN_CHANGED);
}
NS_ASSERTION(!nsLayoutUtils::GetNextContinuationOrIBSplitSibling(childFrame),
"SVG frames should not have continuations "
"or ib-split siblings");
NS_ASSERTION(childFrame->GetParent() == hintFrame,
"SVG child frame not expected to have different parent");
}
}
// If |frame| is dirty or has dirty children, we don't bother updating
// overflows since that will happen when it's reflowed.
if (!(frame->GetStateBits() &
(NS_FRAME_IS_DIRTY | NS_FRAME_HAS_DIRTY_CHILDREN))) {
if (hint & (nsChangeHint_UpdateOverflow |
nsChangeHint_UpdatePostTransformOverflow)) {
OverflowChangedTracker::ChangeKind changeKind;
// If we have both nsChangeHint_UpdateOverflow and
// nsChangeHint_UpdatePostTransformOverflow,
// CHILDREN_CHANGED is selected as it is
// strictly stronger.
if (hint & nsChangeHint_UpdateOverflow) {
changeKind = OverflowChangedTracker::CHILDREN_CHANGED;
} else {
changeKind = OverflowChangedTracker::TRANSFORM_CHANGED;
}
for (nsIFrame* cont = frame; cont; cont =
nsLayoutUtils::GetNextContinuationOrIBSplitSibling(cont)) {
mOverflowChangedTracker.AddFrame(cont, changeKind);
}
}
// UpdateParentOverflow hints need to be processed in addition
// to the above, since if the processing of the above hints
// yields no change, the update will not propagate to the
// parent.
if (hint & nsChangeHint_UpdateParentOverflow) {
MOZ_ASSERT(frame->GetParent(),
"shouldn't get style hints for the root frame");
for (nsIFrame* cont = frame; cont; cont =
nsLayoutUtils::GetNextContinuationOrIBSplitSibling(cont)) {
mOverflowChangedTracker.AddFrame(cont->GetParent(),
OverflowChangedTracker::CHILDREN_CHANGED);
}
}
}
}
if ((hint & nsChangeHint_UpdateCursor) && !didUpdateCursor) {
presContext->PresShell()->SynthesizeMouseMove(false);
didUpdateCursor = true;
}
}
}
frameConstructor->EndUpdate();
// cleanup references and verify the style tree. Note that the latter needs
// to happen once we've processed the whole list, since until then the tree
// is not in fact in a consistent state.
index = count;
while (0 <= --index) {
const nsStyleChangeData* changeData;
aChangeList.ChangeAt(index, &changeData);
if (changeData->mFrame) {
propTable->Delete(changeData->mFrame, ChangeListProperty());
}
#ifdef DEBUG
// reget frame from content since it may have been regenerated...
if (changeData->mContent) {
nsIFrame* frame = changeData->mContent->GetPrimaryFrame();
if (frame) {
DebugVerifyStyleTree(frame);
}
} else if (!changeData->mFrame ||
changeData->mFrame->GetType() != nsGkAtoms::viewportFrame) {
NS_WARNING("Unable to test style tree integrity -- no content node "
"(and not a viewport frame)");
}
#endif
}
aChangeList.Clear();
return NS_OK;
}