static nscoord
GetAvailableContentISize(const ReflowInput& aReflowInput)
{
if (aReflowInput.AvailableISize() == NS_INTRINSICSIZE) {
return NS_INTRINSICSIZE;
}
WritingMode wm = aReflowInput.GetWritingMode();
nscoord borderPaddingISize =
aReflowInput.ComputedLogicalBorderPadding().IStartEnd(wm);
return std::max(0, aReflowInput.AvailableISize() - borderPaddingISize);
}
void
nsSimplePageSequenceFrame::SetDesiredSize(ReflowOutput& aDesiredSize,
const ReflowInput& aReflowInput,
nscoord aWidth,
nscoord aHeight)
{
// Aim to fill the whole size of the document, not only so we
// can act as a background in print preview but also handle overflow
// in child page frames correctly.
// Use availableISize so we don't cause a needless horizontal scrollbar.
WritingMode wm = aReflowInput.GetWritingMode();
nscoord scaledWidth = aWidth * PresContext()->GetPrintPreviewScale();
nscoord scaledHeight = aHeight * PresContext()->GetPrintPreviewScale();
nscoord scaledISize = (wm.IsVertical() ? scaledHeight : scaledWidth);
nscoord scaledBSize = (wm.IsVertical() ? scaledWidth : scaledHeight);
aDesiredSize.ISize(wm) = std::max(scaledISize, aReflowInput.AvailableISize());
aDesiredSize.BSize(wm) = std::max(scaledBSize, aReflowInput.ComputedBSize());
}
/* virtual */ void
nsRubyFrame::Reflow(nsPresContext* aPresContext,
ReflowOutput& aDesiredSize,
const ReflowInput& aReflowInput,
nsReflowStatus& aStatus)
{
MarkInReflow();
DO_GLOBAL_REFLOW_COUNT("nsRubyFrame");
DISPLAY_REFLOW(aPresContext, this, aReflowInput, aDesiredSize, aStatus);
if (!aReflowInput.mLineLayout) {
NS_ASSERTION(aReflowInput.mLineLayout,
"No line layout provided to RubyFrame reflow method.");
aStatus = NS_FRAME_COMPLETE;
return;
}
// Grab overflow frames from prev-in-flow and its own.
MoveOverflowToChildList();
// Clear leadings
mBStartLeading = mBEndLeading = 0;
// Begin the span for the ruby frame
WritingMode frameWM = aReflowInput.GetWritingMode();
WritingMode lineWM = aReflowInput.mLineLayout->GetWritingMode();
LogicalMargin borderPadding = aReflowInput.ComputedLogicalBorderPadding();
nscoord startEdge = 0;
const bool boxDecorationBreakClone =
StyleBorder()->mBoxDecorationBreak == StyleBoxDecorationBreak::Clone;
if (boxDecorationBreakClone || !GetPrevContinuation()) {
startEdge = borderPadding.IStart(frameWM);
}
NS_ASSERTION(aReflowInput.AvailableISize() != NS_UNCONSTRAINEDSIZE,
"should no longer use available widths");
nscoord availableISize = aReflowInput.AvailableISize();
availableISize -= startEdge + borderPadding.IEnd(frameWM);
aReflowInput.mLineLayout->BeginSpan(this, &aReflowInput,
startEdge, availableISize, &mBaseline);
aStatus = NS_FRAME_COMPLETE;
for (RubySegmentEnumerator e(this); !e.AtEnd(); e.Next()) {
ReflowSegment(aPresContext, aReflowInput, e.GetBaseContainer(), aStatus);
if (NS_INLINE_IS_BREAK(aStatus)) {
// A break occurs when reflowing the segment.
// Don't continue reflowing more segments.
break;
}
}
ContinuationTraversingState pullState(this);
while (aStatus == NS_FRAME_COMPLETE) {
nsRubyBaseContainerFrame* baseContainer =
PullOneSegment(aReflowInput.mLineLayout, pullState);
if (!baseContainer) {
// No more continuations after, finish now.
break;
}
ReflowSegment(aPresContext, aReflowInput, baseContainer, aStatus);
}
// We never handle overflow in ruby.
MOZ_ASSERT(!NS_FRAME_OVERFLOW_IS_INCOMPLETE(aStatus));
aDesiredSize.ISize(lineWM) = aReflowInput.mLineLayout->EndSpan(this);
if (boxDecorationBreakClone || !GetPrevContinuation()) {
aDesiredSize.ISize(lineWM) += borderPadding.IStart(frameWM);
}
if (boxDecorationBreakClone || NS_FRAME_IS_COMPLETE(aStatus)) {
aDesiredSize.ISize(lineWM) += borderPadding.IEnd(frameWM);
}
nsLayoutUtils::SetBSizeFromFontMetrics(this, aDesiredSize,
borderPadding, lineWM, frameWM);
}
void
nsRubyFrame::ReflowSegment(nsPresContext* aPresContext,
const ReflowInput& aReflowInput,
nsRubyBaseContainerFrame* aBaseContainer,
nsReflowStatus& aStatus)
{
WritingMode lineWM = aReflowInput.mLineLayout->GetWritingMode();
LogicalSize availSize(lineWM, aReflowInput.AvailableISize(),
aReflowInput.AvailableBSize());
WritingMode rubyWM = GetWritingMode();
NS_ASSERTION(!rubyWM.IsOrthogonalTo(lineWM),
"Ruby frame writing-mode shouldn't be orthogonal to its line");
AutoRubyTextContainerArray textContainers(aBaseContainer);
const uint32_t rtcCount = textContainers.Length();
ReflowOutput baseMetrics(aReflowInput);
bool pushedFrame;
aReflowInput.mLineLayout->ReflowFrame(aBaseContainer, aStatus,
&baseMetrics, pushedFrame);
if (NS_INLINE_IS_BREAK_BEFORE(aStatus)) {
if (aBaseContainer != mFrames.FirstChild()) {
// Some segments may have been reflowed before, hence it is not
// a break-before for the ruby container.
aStatus = NS_INLINE_LINE_BREAK_AFTER(NS_FRAME_NOT_COMPLETE);
PushChildren(aBaseContainer, aBaseContainer->GetPrevSibling());
aReflowInput.mLineLayout->SetDirtyNextLine();
}
// This base container is not placed at all, we can skip all
// text containers paired with it.
return;
}
if (NS_FRAME_IS_NOT_COMPLETE(aStatus)) {
// It always promise that if the status is incomplete, there is a
// break occurs. Break before has been processed above. However,
// it is possible that break after happens with the frame reflow
// completed. It happens if there is a force break at the end.
MOZ_ASSERT(NS_INLINE_IS_BREAK_AFTER(aStatus));
// Find the previous sibling which we will
// insert new continuations after.
nsIFrame* lastChild;
if (rtcCount > 0) {
lastChild = textContainers.LastElement();
} else {
lastChild = aBaseContainer;
}
// Create continuations for the base container
nsIFrame* newBaseContainer = CreateNextInFlow(aBaseContainer);
// newBaseContainer is null if there are existing next-in-flows.
// We only need to move and push if there were not.
if (newBaseContainer) {
// Move the new frame after all the text containers
mFrames.RemoveFrame(newBaseContainer);
mFrames.InsertFrame(nullptr, lastChild, newBaseContainer);
// Create continuations for text containers
nsIFrame* newLastChild = newBaseContainer;
for (uint32_t i = 0; i < rtcCount; i++) {
nsIFrame* newTextContainer = CreateNextInFlow(textContainers[i]);
MOZ_ASSERT(newTextContainer, "Next-in-flow of rtc should not exist "
"if the corresponding rbc does not");
mFrames.RemoveFrame(newTextContainer);
mFrames.InsertFrame(nullptr, newLastChild, newTextContainer);
newLastChild = newTextContainer;
}
}
if (lastChild != mFrames.LastChild()) {
// Always push the next frame after the last child in this segment.
// It is possible that we pulled it back before our next-in-flow
// drain our overflow.
PushChildren(lastChild->GetNextSibling(), lastChild);
aReflowInput.mLineLayout->SetDirtyNextLine();
}
} else {
// If the ruby base container is reflowed completely, the line
// layout will remove the next-in-flows of that frame. But the
// line layout is not aware of the ruby text containers, hence
// it is necessary to remove them here.
for (uint32_t i = 0; i < rtcCount; i++) {
nsIFrame* nextRTC = textContainers[i]->GetNextInFlow();
if (nextRTC) {
nextRTC->GetParent()->DeleteNextInFlowChild(nextRTC, true);
}
}
}
nscoord segmentISize = baseMetrics.ISize(lineWM);
const nsSize dummyContainerSize;
LogicalRect baseRect =
aBaseContainer->GetLogicalRect(lineWM, dummyContainerSize);
// We need to position our rtc frames on one side or the other of the
// base container's rect, using a coordinate space that's relative to
// the ruby frame. Right now, the base container's rect's block-axis
// position is relative to the block container frame containing the
// lines, so we use 0 instead. (i.e. we assume that the base container
// is adjacent to the ruby frame's block-start edge.)
// XXX We may need to add border/padding here. See bug 1055667.
baseRect.BStart(lineWM) = 0;
// The rect for offsets of text containers.
LogicalRect offsetRect = baseRect;
for (uint32_t i = 0; i < rtcCount; i++) {
nsRubyTextContainerFrame* textContainer = textContainers[i];
WritingMode rtcWM = textContainer->GetWritingMode();
nsReflowStatus textReflowStatus;
ReflowOutput textMetrics(aReflowInput);
ReflowInput textReflowInput(aPresContext, aReflowInput, textContainer,
availSize.ConvertTo(rtcWM, lineWM));
// FIXME We probably shouldn't be using the same nsLineLayout for
// the text containers. But it should be fine now as we are
// not actually using this line layout to reflow something,
// but just read the writing mode from it.
textReflowInput.mLineLayout = aReflowInput.mLineLayout;
textContainer->Reflow(aPresContext, textMetrics,
textReflowInput, textReflowStatus);
// Ruby text containers always return NS_FRAME_COMPLETE even when
// they have continuations, because the breaking has already been
// handled when reflowing the base containers.
NS_ASSERTION(textReflowStatus == NS_FRAME_COMPLETE,
"Ruby text container must not break itself inside");
// The metrics is initialized with reflow state of this ruby frame,
// hence the writing-mode is tied to rubyWM instead of rtcWM.
LogicalSize size = textMetrics.Size(rubyWM).ConvertTo(lineWM, rubyWM);
textContainer->SetSize(lineWM, size);
nscoord reservedISize = RubyUtils::GetReservedISize(textContainer);
segmentISize = std::max(segmentISize, size.ISize(lineWM) + reservedISize);
uint8_t rubyPosition = textContainer->StyleText()->mRubyPosition;
MOZ_ASSERT(rubyPosition == NS_STYLE_RUBY_POSITION_OVER ||
rubyPosition == NS_STYLE_RUBY_POSITION_UNDER);
Maybe<LogicalSide> side;
if (rubyPosition == NS_STYLE_RUBY_POSITION_OVER) {
side.emplace(lineWM.LogicalSideForLineRelativeDir(eLineRelativeDirOver));
} else if (rubyPosition == NS_STYLE_RUBY_POSITION_UNDER) {
side.emplace(lineWM.LogicalSideForLineRelativeDir(eLineRelativeDirUnder));
} else {
// XXX inter-character support in bug 1055672
MOZ_ASSERT_UNREACHABLE("Unsupported ruby-position");
}
LogicalPoint position(lineWM);
if (side.isSome()) {
if (side.value() == eLogicalSideBStart) {
offsetRect.BStart(lineWM) -= size.BSize(lineWM);
offsetRect.BSize(lineWM) += size.BSize(lineWM);
position = offsetRect.Origin(lineWM);
} else if (side.value() == eLogicalSideBEnd) {
position = offsetRect.Origin(lineWM) +
LogicalPoint(lineWM, 0, offsetRect.BSize(lineWM));
offsetRect.BSize(lineWM) += size.BSize(lineWM);
} else {
MOZ_ASSERT_UNREACHABLE("???");
}
}
// Using a dummy container-size here, so child positioning may not be
// correct. We will fix it in nsLineLayout after the whole line is
// reflowed.
FinishReflowChild(textContainer, aPresContext, textMetrics,
&textReflowInput, lineWM, position, dummyContainerSize, 0);
}
MOZ_ASSERT(baseRect.ISize(lineWM) == offsetRect.ISize(lineWM),
"Annotations should only be placed on the block directions");
nscoord deltaISize = segmentISize - baseMetrics.ISize(lineWM);
if (deltaISize <= 0) {
RubyUtils::ClearReservedISize(aBaseContainer);
} else {
RubyUtils::SetReservedISize(aBaseContainer, deltaISize);
aReflowInput.mLineLayout->AdvanceICoord(deltaISize);
}
// Set block leadings of the base container
nscoord startLeading = baseRect.BStart(lineWM) - offsetRect.BStart(lineWM);
nscoord endLeading = offsetRect.BEnd(lineWM) - baseRect.BEnd(lineWM);
// XXX When bug 765861 gets fixed, this warning should be upgraded.
NS_WARNING_ASSERTION(startLeading >= 0 && endLeading >= 0,
"Leadings should be non-negative (because adding "
"ruby annotation can only increase the size)");
mBStartLeading = std::max(mBStartLeading, startLeading);
mBEndLeading = std::max(mBEndLeading, endLeading);
}
void
nsInlineFrame::ReflowFrames(nsPresContext* aPresContext,
const ReflowInput& aReflowInput,
InlineReflowInput& irs,
ReflowOutput& aMetrics,
nsReflowStatus& aStatus)
{
MOZ_ASSERT(aStatus.IsEmpty(), "Caller should pass a fresh reflow status!");
nsLineLayout* lineLayout = aReflowInput.mLineLayout;
bool inFirstLine = aReflowInput.mLineLayout->GetInFirstLine();
RestyleManager* restyleManager = aPresContext->RestyleManager();
WritingMode frameWM = aReflowInput.GetWritingMode();
WritingMode lineWM = aReflowInput.mLineLayout->mRootSpan->mWritingMode;
LogicalMargin framePadding = aReflowInput.ComputedLogicalBorderPadding();
nscoord startEdge = 0;
const bool boxDecorationBreakClone =
MOZ_UNLIKELY(StyleBorder()->mBoxDecorationBreak ==
StyleBoxDecorationBreak::Clone);
// Don't offset by our start borderpadding if we have a prev continuation or
// if we're in a part of an {ib} split other than the first one. For
// box-decoration-break:clone we always offset our start since all
// continuations have border/padding.
if ((!GetPrevContinuation() && !FrameIsNonFirstInIBSplit()) ||
boxDecorationBreakClone) {
startEdge = framePadding.IStart(frameWM);
}
nscoord availableISize = aReflowInput.AvailableISize();
NS_ASSERTION(availableISize != NS_UNCONSTRAINEDSIZE,
"should no longer use available widths");
// Subtract off inline axis border+padding from availableISize
availableISize -= startEdge;
availableISize -= framePadding.IEnd(frameWM);
lineLayout->BeginSpan(this, &aReflowInput, startEdge,
startEdge + availableISize, &mBaseline);
// First reflow our principal children.
nsIFrame* frame = mFrames.FirstChild();
bool done = false;
while (frame) {
// Check if we should lazily set the child frame's parent pointer.
if (irs.mSetParentPointer) {
nsIFrame* child = frame;
do {
child->SetParent(this);
if (inFirstLine) {
restyleManager->ReparentStyleContext(child);
nsLayoutUtils::MarkDescendantsDirty(child);
}
// We also need to do the same for |frame|'s next-in-flows that are in
// the sibling list. Otherwise, if we reflow |frame| and it's complete
// we'll crash when trying to delete its next-in-flow.
// This scenario doesn't happen often, but it can happen.
nsIFrame* nextSibling = child->GetNextSibling();
child = child->GetNextInFlow();
if (MOZ_UNLIKELY(child)) {
while (child != nextSibling && nextSibling) {
nextSibling = nextSibling->GetNextSibling();
}
if (!nextSibling) {
child = nullptr;
}
}
MOZ_ASSERT(!child || mFrames.ContainsFrame(child));
} while (child);
// Fix the parent pointer for ::first-letter child frame next-in-flows,
// so nsFirstLetterFrame::Reflow can destroy them safely (bug 401042).
nsIFrame* realFrame = nsPlaceholderFrame::GetRealFrameFor(frame);
if (realFrame->IsLetterFrame()) {
nsIFrame* child = realFrame->PrincipalChildList().FirstChild();
if (child) {
NS_ASSERTION(child->IsTextFrame(), "unexpected frame type");
nsIFrame* nextInFlow = child->GetNextInFlow();
for ( ; nextInFlow; nextInFlow = nextInFlow->GetNextInFlow()) {
NS_ASSERTION(nextInFlow->IsTextFrame(), "unexpected frame type");
if (mFrames.ContainsFrame(nextInFlow)) {
nextInFlow->SetParent(this);
if (inFirstLine) {
restyleManager->ReparentStyleContext(nextInFlow);
nsLayoutUtils::MarkDescendantsDirty(nextInFlow);
}
}
else {
#ifdef DEBUG
// Once we find a next-in-flow that isn't ours none of the
// remaining next-in-flows should be either.
for ( ; nextInFlow; nextInFlow = nextInFlow->GetNextInFlow()) {
NS_ASSERTION(!mFrames.ContainsFrame(nextInFlow),
"unexpected letter frame flow");
}
#endif
break;
}
}
}
}
}
MOZ_ASSERT(frame->GetParent() == this);
if (!done) {
bool reflowingFirstLetter = lineLayout->GetFirstLetterStyleOK();
ReflowInlineFrame(aPresContext, aReflowInput, irs, frame, aStatus);
done = aStatus.IsInlineBreak() ||
(!reflowingFirstLetter && aStatus.IsIncomplete());
if (done) {
if (!irs.mSetParentPointer) {
break;
}
// Keep reparenting the remaining siblings, but don't reflow them.
nsFrameList* pushedFrames = GetOverflowFrames();
if (pushedFrames && pushedFrames->FirstChild() == frame) {
// Don't bother if |frame| was pushed to our overflow list.
break;
}
} else {
irs.mPrevFrame = frame;
}
}
frame = frame->GetNextSibling();
}
// Attempt to pull frames from our next-in-flow until we can't
if (!done && GetNextInFlow()) {
while (true) {
bool reflowingFirstLetter = lineLayout->GetFirstLetterStyleOK();
bool isComplete;
if (!frame) { // Could be non-null if we pulled a first-letter frame and
// it created a continuation, since we don't push those.
frame = PullOneFrame(aPresContext, irs, &isComplete);
}
#ifdef NOISY_PUSHING
printf("%p pulled up %p\n", this, frame);
#endif
if (nullptr == frame) {
if (!isComplete) {
aStatus.Reset();
aStatus.SetIncomplete();
}
break;
}
ReflowInlineFrame(aPresContext, aReflowInput, irs, frame, aStatus);
if (aStatus.IsInlineBreak() ||
(!reflowingFirstLetter && aStatus.IsIncomplete())) {
break;
}
irs.mPrevFrame = frame;
frame = frame->GetNextSibling();
}
}
NS_ASSERTION(!aStatus.IsComplete() || !GetOverflowFrames(),
"We can't be complete AND have overflow frames!");
// If after reflowing our children they take up no area then make
// sure that we don't either.
//
// Note: CSS demands that empty inline elements still affect the
// line-height calculations. However, continuations of an inline
// that are empty we force to empty so that things like collapsed
// whitespace in an inline element don't affect the line-height.
aMetrics.ISize(lineWM) = lineLayout->EndSpan(this);
// Compute final width.
// XXX Note that that the padding start and end are in the frame's
// writing mode, but the metrics' inline-size is in the line's
// writing mode. This makes sense if the line and frame are both
// vertical or both horizontal, but what should happen with
// orthogonal inlines?
// Make sure to not include our start border and padding if we have a prev
// continuation or if we're in a part of an {ib} split other than the first
// one. For box-decoration-break:clone we always include our start border
// and padding since all continuations have them.
if ((!GetPrevContinuation() && !FrameIsNonFirstInIBSplit()) ||
boxDecorationBreakClone) {
aMetrics.ISize(lineWM) += framePadding.IStart(frameWM);
}
/*
* We want to only apply the end border and padding if we're the last
* continuation and either not in an {ib} split or the last part of it. To
* be the last continuation we have to be complete (so that we won't get a
* next-in-flow) and have no non-fluid continuations on our continuation
* chain. For box-decoration-break:clone we always apply the end border and
* padding since all continuations have them.
*/
if ((aStatus.IsComplete() &&
!LastInFlow()->GetNextContinuation() &&
!FrameIsNonLastInIBSplit()) ||
boxDecorationBreakClone) {
aMetrics.ISize(lineWM) += framePadding.IEnd(frameWM);
}
nsLayoutUtils::SetBSizeFromFontMetrics(this, aMetrics,
framePadding, lineWM, frameWM);
// For now our overflow area is zero. The real value will be
// computed in |nsLineLayout::RelativePositionFrames|.
aMetrics.mOverflowAreas.Clear();
#ifdef NOISY_FINAL_SIZE
ListTag(stdout);
printf(": metrics=%d,%d ascent=%d\n",
aMetrics.Width(), aMetrics.Height(), aMetrics.TopAscent());
#endif
}
void
ViewportFrame::Reflow(nsPresContext* aPresContext,
ReflowOutput& aDesiredSize,
const ReflowInput& aReflowInput,
nsReflowStatus& aStatus)
{
MarkInReflow();
DO_GLOBAL_REFLOW_COUNT("ViewportFrame");
DISPLAY_REFLOW(aPresContext, this, aReflowInput, aDesiredSize, aStatus);
NS_FRAME_TRACE_REFLOW_IN("ViewportFrame::Reflow");
// Initialize OUT parameters
aStatus = NS_FRAME_COMPLETE;
// Because |Reflow| sets ComputedBSize() on the child to our
// ComputedBSize().
AddStateBits(NS_FRAME_CONTAINS_RELATIVE_BSIZE);
// Set our size up front, since some parts of reflow depend on it
// being already set. Note that the computed height may be
// unconstrained; that's ok. Consumers should watch out for that.
SetSize(nsSize(aReflowInput.ComputedWidth(), aReflowInput.ComputedHeight()));
// Reflow the main content first so that the placeholders of the
// fixed-position frames will be in the right places on an initial
// reflow.
nscoord kidBSize = 0;
WritingMode wm = aReflowInput.GetWritingMode();
if (mFrames.NotEmpty()) {
// Deal with a non-incremental reflow or an incremental reflow
// targeted at our one-and-only principal child frame.
if (aReflowInput.ShouldReflowAllKids() ||
aReflowInput.IsBResize() ||
NS_SUBTREE_DIRTY(mFrames.FirstChild())) {
// Reflow our one-and-only principal child frame
nsIFrame* kidFrame = mFrames.FirstChild();
ReflowOutput kidDesiredSize(aReflowInput);
WritingMode wm = kidFrame->GetWritingMode();
LogicalSize availableSpace = aReflowInput.AvailableSize(wm);
ReflowInput kidReflowInput(aPresContext, aReflowInput,
kidFrame, availableSpace);
// Reflow the frame
kidReflowInput.SetComputedBSize(aReflowInput.ComputedBSize());
ReflowChild(kidFrame, aPresContext, kidDesiredSize, kidReflowInput,
0, 0, 0, aStatus);
kidBSize = kidDesiredSize.BSize(wm);
FinishReflowChild(kidFrame, aPresContext, kidDesiredSize, nullptr, 0, 0, 0);
} else {
kidBSize = LogicalSize(wm, mFrames.FirstChild()->GetSize()).BSize(wm);
}
}
NS_ASSERTION(aReflowInput.AvailableISize() != NS_UNCONSTRAINEDSIZE,
"shouldn't happen anymore");
// Return the max size as our desired size
LogicalSize maxSize(wm, aReflowInput.AvailableISize(),
// Being flowed initially at an unconstrained block size
// means we should return our child's intrinsic size.
aReflowInput.ComputedBSize() != NS_UNCONSTRAINEDSIZE
? aReflowInput.ComputedBSize()
: kidBSize);
aDesiredSize.SetSize(wm, maxSize);
aDesiredSize.SetOverflowAreasToDesiredBounds();
if (HasAbsolutelyPositionedChildren()) {
// Make a copy of the reflow state and change the computed width and height
// to reflect the available space for the fixed items
ReflowInput reflowInput(aReflowInput);
if (reflowInput.AvailableBSize() == NS_UNCONSTRAINEDSIZE) {
// We have an intrinsic-height document with abs-pos/fixed-pos children.
// Set the available height and mComputedHeight to our chosen height.
reflowInput.AvailableBSize() = maxSize.BSize(wm);
// Not having border/padding simplifies things
NS_ASSERTION(reflowInput.ComputedPhysicalBorderPadding() == nsMargin(0,0,0,0),
"Viewports can't have border/padding");
reflowInput.SetComputedBSize(maxSize.BSize(wm));
}
nsRect rect = AdjustReflowInputAsContainingBlock(&reflowInput);
nsOverflowAreas* overflowAreas = &aDesiredSize.mOverflowAreas;
nsIScrollableFrame* rootScrollFrame =
aPresContext->PresShell()->GetRootScrollFrameAsScrollable();
if (rootScrollFrame && !rootScrollFrame->IsIgnoringViewportClipping()) {
overflowAreas = nullptr;
}
AbsPosReflowFlags flags =
AbsPosReflowFlags::eCBWidthAndHeightChanged; // XXX could be optimized
GetAbsoluteContainingBlock()->Reflow(this, aPresContext, reflowInput, aStatus,
rect, flags, overflowAreas);
}
if (mFrames.NotEmpty()) {
ConsiderChildOverflow(aDesiredSize.mOverflowAreas, mFrames.FirstChild());
}
// If we were dirty then do a repaint
if (GetStateBits() & NS_FRAME_IS_DIRTY) {
InvalidateFrame();
}
// Clipping is handled by the document container (e.g., nsSubDocumentFrame),
// so we don't need to change our overflow areas.
bool overflowChanged = FinishAndStoreOverflow(&aDesiredSize);
if (overflowChanged) {
// We may need to alert our container to get it to pick up the
// overflow change.
nsSubDocumentFrame* container = static_cast<nsSubDocumentFrame*>
(nsLayoutUtils::GetCrossDocParentFrame(this));
if (container && !container->ShouldClipSubdocument()) {
container->PresContext()->PresShell()->
FrameNeedsReflow(container, nsIPresShell::eResize, NS_FRAME_IS_DIRTY);
}
}
NS_FRAME_TRACE_REFLOW_OUT("ViewportFrame::Reflow", aStatus);
NS_FRAME_SET_TRUNCATION(aStatus, aReflowInput, aDesiredSize);
}
void
nsTableCellFrame::Reflow(nsPresContext* aPresContext,
ReflowOutput& aDesiredSize,
const ReflowInput& aReflowInput,
nsReflowStatus& aStatus)
{
MarkInReflow();
DO_GLOBAL_REFLOW_COUNT("nsTableCellFrame");
DISPLAY_REFLOW(aPresContext, this, aReflowInput, aDesiredSize, aStatus);
if (aReflowInput.mFlags.mSpecialBSizeReflow) {
FirstInFlow()->AddStateBits(NS_TABLE_CELL_HAD_SPECIAL_REFLOW);
}
// see if a special bsize reflow needs to occur due to having a pct height
nsTableFrame::CheckRequestSpecialBSizeReflow(aReflowInput);
aStatus = NS_FRAME_COMPLETE;
WritingMode wm = aReflowInput.GetWritingMode();
LogicalSize availSize(wm, aReflowInput.AvailableISize(),
aReflowInput.AvailableBSize());
LogicalMargin borderPadding = aReflowInput.ComputedLogicalPadding();
LogicalMargin border = GetBorderWidth(wm);
borderPadding += border;
// reduce available space by insets, if we're in a constrained situation
availSize.ISize(wm) -= borderPadding.IStartEnd(wm);
if (NS_UNCONSTRAINEDSIZE != availSize.BSize(wm)) {
availSize.BSize(wm) -= borderPadding.BStartEnd(wm);
}
// Try to reflow the child into the available space. It might not
// fit or might need continuing.
if (availSize.BSize(wm) < 0) {
availSize.BSize(wm) = 1;
}
ReflowOutput kidSize(wm, aDesiredSize.mFlags);
kidSize.ClearSize();
SetPriorAvailISize(aReflowInput.AvailableISize());
nsIFrame* firstKid = mFrames.FirstChild();
NS_ASSERTION(firstKid, "Frame construction error, a table cell always has an inner cell frame");
nsTableFrame* tableFrame = GetTableFrame();
if (aReflowInput.mFlags.mSpecialBSizeReflow) {
const_cast<ReflowInput&>(aReflowInput).
SetComputedBSize(BSize(wm) - borderPadding.BStartEnd(wm));
DISPLAY_REFLOW_CHANGE();
}
else if (aPresContext->IsPaginated()) {
nscoord computedUnpaginatedBSize =
CalcUnpaginatedBSize((nsTableCellFrame&)*this,
*tableFrame, borderPadding.BStartEnd(wm));
if (computedUnpaginatedBSize > 0) {
const_cast<ReflowInput&>(aReflowInput).SetComputedBSize(computedUnpaginatedBSize);
DISPLAY_REFLOW_CHANGE();
}
}
else {
SetHasPctOverBSize(false);
}
WritingMode kidWM = firstKid->GetWritingMode();
ReflowInput kidReflowInput(aPresContext, aReflowInput, firstKid,
availSize.ConvertTo(kidWM, wm));
// Don't be a percent height observer if we're in the middle of
// special-bsize reflow, in case we get an accidental NotifyPercentBSize()
// call (which we shouldn't honor during special-bsize reflow)
if (!aReflowInput.mFlags.mSpecialBSizeReflow) {
// mPercentBSizeObserver is for children of cells in quirks mode,
// but only those than are tables in standards mode. NeedsToObserve
// will determine how far this is propagated to descendants.
kidReflowInput.mPercentBSizeObserver = this;
}
// Don't propagate special bsize reflow state to our kids
kidReflowInput.mFlags.mSpecialBSizeReflow = false;
if (aReflowInput.mFlags.mSpecialBSizeReflow ||
FirstInFlow()->HasAnyStateBits(NS_TABLE_CELL_HAD_SPECIAL_REFLOW)) {
// We need to force the kid to have mBResize set if we've had a
// special reflow in the past, since the non-special reflow needs to
// resize back to what it was without the special bsize reflow.
kidReflowInput.SetBResize(true);
}
nsSize containerSize =
aReflowInput.ComputedSizeAsContainerIfConstrained();
LogicalPoint kidOrigin(wm, borderPadding.IStart(wm),
borderPadding.BStart(wm));
nsRect origRect = firstKid->GetRect();
nsRect origVisualOverflow = firstKid->GetVisualOverflowRect();
bool firstReflow = firstKid->HasAnyStateBits(NS_FRAME_FIRST_REFLOW);
ReflowChild(firstKid, aPresContext, kidSize, kidReflowInput,
wm, kidOrigin, containerSize, 0, aStatus);
if (NS_FRAME_OVERFLOW_IS_INCOMPLETE(aStatus)) {
// Don't pass OVERFLOW_INCOMPLETE through tables until they can actually handle it
//XXX should paginate overflow as overflow, but not in this patch (bug 379349)
NS_FRAME_SET_INCOMPLETE(aStatus);
printf("Set table cell incomplete %p\n", static_cast<void*>(this));
}
// XXXbz is this invalidate actually needed, really?
if (HasAnyStateBits(NS_FRAME_IS_DIRTY)) {
InvalidateFrameSubtree();
}
#ifdef DEBUG
DebugCheckChildSize(firstKid, kidSize);
#endif
// 0 dimensioned cells need to be treated specially in Standard/NavQuirks mode
// see testcase "emptyCells.html"
nsIFrame* prevInFlow = GetPrevInFlow();
bool isEmpty;
if (prevInFlow) {
isEmpty = static_cast<nsTableCellFrame*>(prevInFlow)->GetContentEmpty();
} else {
isEmpty = !CellHasVisibleContent(kidSize.Height(), tableFrame, firstKid);
}
SetContentEmpty(isEmpty);
// Place the child
FinishReflowChild(firstKid, aPresContext, kidSize, &kidReflowInput,
wm, kidOrigin, containerSize, 0);
nsTableFrame::InvalidateTableFrame(firstKid, origRect, origVisualOverflow,
firstReflow);
// first, compute the bsize which can be set w/o being restricted by
// available bsize
LogicalSize cellSize(wm);
cellSize.BSize(wm) = kidSize.BSize(wm);
if (NS_UNCONSTRAINEDSIZE != cellSize.BSize(wm)) {
cellSize.BSize(wm) += borderPadding.BStartEnd(wm);
}
// next determine the cell's isize
cellSize.ISize(wm) = kidSize.ISize(wm); // at this point, we've factored in the cell's style attributes
// factor in border and padding
if (NS_UNCONSTRAINEDSIZE != cellSize.ISize(wm)) {
cellSize.ISize(wm) += borderPadding.IStartEnd(wm);
}
// set the cell's desired size and max element size
aDesiredSize.SetSize(wm, cellSize);
// the overflow area will be computed when BlockDirAlignChild() gets called
if (aReflowInput.mFlags.mSpecialBSizeReflow) {
if (aDesiredSize.BSize(wm) > BSize(wm)) {
// set a bit indicating that the pct bsize contents exceeded
// the height that they could honor in the pass 2 reflow
SetHasPctOverBSize(true);
}
if (NS_UNCONSTRAINEDSIZE == aReflowInput.AvailableBSize()) {
aDesiredSize.BSize(wm) = BSize(wm);
}
}
// If our parent is in initial reflow, it'll handle invalidating our
// entire overflow rect.
if (!GetParent()->HasAnyStateBits(NS_FRAME_FIRST_REFLOW) &&
nsSize(aDesiredSize.Width(), aDesiredSize.Height()) != mRect.Size()) {
InvalidateFrame();
}
// remember the desired size for this reflow
SetDesiredSize(aDesiredSize);
// Any absolutely-positioned children will get reflowed in
// nsFrame::FixupPositionedTableParts in another pass, so propagate our
// dirtiness to them before our parent clears our dirty bits.
PushDirtyBitToAbsoluteFrames();
NS_FRAME_SET_TRUNCATION(aStatus, aReflowInput, aDesiredSize);
}
bool
nsColumnSetFrame::ReflowChildren(ReflowOutput& aDesiredSize,
const ReflowInput& aReflowInput,
nsReflowStatus& aStatus,
const ReflowConfig& aConfig,
bool aUnboundedLastColumn,
nsCollapsingMargin* aCarriedOutBEndMargin,
ColumnBalanceData& aColData)
{
aColData.Reset();
bool allFit = true;
WritingMode wm = GetWritingMode();
bool isVertical = wm.IsVertical();
bool isRTL = !wm.IsBidiLTR();
bool shrinkingBSizeOnly = !NS_SUBTREE_DIRTY(this) &&
mLastBalanceBSize > aConfig.mColMaxBSize;
#ifdef DEBUG_roc
printf("*** Doing column reflow pass: mLastBalanceBSize=%d, mColMaxBSize=%d, RTL=%d\n"
" mBalanceColCount=%d, mColISize=%d, mColGap=%d\n",
mLastBalanceBSize, aConfig.mColMaxBSize, isRTL, aConfig.mBalanceColCount,
aConfig.mColISize, aConfig.mColGap);
#endif
DrainOverflowColumns();
const bool colBSizeChanged = mLastBalanceBSize != aConfig.mColMaxBSize;
if (colBSizeChanged) {
mLastBalanceBSize = aConfig.mColMaxBSize;
// XXX Seems like this could fire if incremental reflow pushed the column set
// down so we reflow incrementally with a different available height.
// We need a way to do an incremental reflow and be sure availableHeight
// changes are taken account of! Right now I think block frames with absolute
// children might exit early.
//NS_ASSERTION(aKidReason != eReflowReason_Incremental,
// "incremental reflow should not have changed the balance height");
}
// get our border and padding
LogicalMargin borderPadding = aReflowInput.ComputedLogicalBorderPadding();
borderPadding.ApplySkipSides(GetLogicalSkipSides(&aReflowInput));
nsRect contentRect(0, 0, 0, 0);
nsOverflowAreas overflowRects;
nsIFrame* child = mFrames.FirstChild();
LogicalPoint childOrigin(wm, borderPadding.IStart(wm),
borderPadding.BStart(wm));
// In vertical-rl mode, columns will not be correctly placed if the
// reflowInput's ComputedWidth() is UNCONSTRAINED (in which case we'll get
// a containerSize.width of zero here). In that case, the column positions
// will be adjusted later, after our correct contentSize is known.
nsSize containerSize = aReflowInput.ComputedSizeAsContainerIfConstrained();
// For RTL, since the columns might not fill the frame exactly, we
// need to account for the slop. Otherwise we'll waste time moving the
// columns by some tiny amount
// XXX when all of layout is converted to logical coordinates, we
// probably won't need to do this hack any more. For now, we
// confine it to the legacy horizontal-rl case
if (!isVertical && isRTL) {
nscoord availISize = aReflowInput.AvailableISize();
if (aReflowInput.ComputedISize() != NS_INTRINSICSIZE) {
availISize = aReflowInput.ComputedISize();
}
if (availISize != NS_INTRINSICSIZE) {
childOrigin.I(wm) = containerSize.width - borderPadding.Left(wm) -
availISize;
#ifdef DEBUG_roc
printf("*** childOrigin.iCoord = %d\n", childOrigin.I(wm));
#endif
}
}
int columnCount = 0;
int contentBEnd = 0;
bool reflowNext = false;
while (child) {
// Try to skip reflowing the child. We can't skip if the child is dirty. We also can't
// skip if the next column is dirty, because the next column's first line(s)
// might be pullable back to this column. We can't skip if it's the last child
// because we need to obtain the bottom margin. We can't skip
// if this is the last column and we're supposed to assign unbounded
// height to it, because that could change the available height from
// the last time we reflowed it and we should try to pull all the
// content from its next sibling. (Note that it might be the last
// column, but not be the last child because the desired number of columns
// has changed.)
bool skipIncremental = !aReflowInput.ShouldReflowAllKids()
&& !NS_SUBTREE_DIRTY(child)
&& child->GetNextSibling()
&& !(aUnboundedLastColumn && columnCount == aConfig.mBalanceColCount - 1)
&& !NS_SUBTREE_DIRTY(child->GetNextSibling());
// If we need to pull up content from the prev-in-flow then this is not just
// a height shrink. The prev in flow will have set the dirty bit.
// Check the overflow rect YMost instead of just the child's content height. The child
// may have overflowing content that cares about the available height boundary.
// (It may also have overflowing content that doesn't care about the available height
// boundary, but if so, too bad, this optimization is defeated.)
// We want scrollable overflow here since this is a calculation that
// affects layout.
bool skipResizeBSizeShrink = false;
if (shrinkingBSizeOnly) {
switch (wm.GetBlockDir()) {
case WritingMode::eBlockTB:
if (child->GetScrollableOverflowRect().YMost() <= aConfig.mColMaxBSize) {
skipResizeBSizeShrink = true;
}
break;
case WritingMode::eBlockLR:
if (child->GetScrollableOverflowRect().XMost() <= aConfig.mColMaxBSize) {
skipResizeBSizeShrink = true;
}
break;
case WritingMode::eBlockRL:
// XXX not sure how to handle this, so for now just don't attempt
// the optimization
break;
default:
NS_NOTREACHED("unknown block direction");
break;
}
}
nscoord childContentBEnd = 0;
if (!reflowNext && (skipIncremental || skipResizeBSizeShrink)) {
// This child does not need to be reflowed, but we may need to move it
MoveChildTo(child, childOrigin, wm, containerSize);
// If this is the last frame then make sure we get the right status
nsIFrame* kidNext = child->GetNextSibling();
if (kidNext) {
aStatus = (kidNext->GetStateBits() & NS_FRAME_IS_OVERFLOW_CONTAINER)
? NS_FRAME_OVERFLOW_INCOMPLETE
: NS_FRAME_NOT_COMPLETE;
} else {
aStatus = mLastFrameStatus;
}
childContentBEnd = nsLayoutUtils::CalculateContentBEnd(wm, child);
#ifdef DEBUG_roc
printf("*** Skipping child #%d %p (incremental %d, resize block-size shrink %d): status = %d\n",
columnCount, (void*)child, skipIncremental, skipResizeBSizeShrink, aStatus);
#endif
} else {
LogicalSize availSize(wm, aConfig.mColISize, aConfig.mColMaxBSize);
if (aUnboundedLastColumn && columnCount == aConfig.mBalanceColCount - 1) {
availSize.BSize(wm) = GetAvailableContentBSize(aReflowInput);
}
LogicalSize computedSize = aReflowInput.ComputedSize(wm);
if (reflowNext)
child->AddStateBits(NS_FRAME_IS_DIRTY);
LogicalSize kidCBSize(wm, availSize.ISize(wm), computedSize.BSize(wm));
ReflowInput kidReflowInput(PresContext(), aReflowInput, child,
availSize, &kidCBSize);
kidReflowInput.mFlags.mIsTopOfPage = true;
kidReflowInput.mFlags.mTableIsSplittable = false;
kidReflowInput.mFlags.mIsColumnBalancing = aConfig.mBalanceColCount < INT32_MAX;
// We need to reflow any float placeholders, even if our column height
// hasn't changed.
kidReflowInput.mFlags.mMustReflowPlaceholders = !colBSizeChanged;
#ifdef DEBUG_roc
printf("*** Reflowing child #%d %p: availHeight=%d\n",
columnCount, (void*)child,availSize.BSize(wm));
#endif
// Note if the column's next in flow is not being changed by this incremental reflow.
// This may allow the current column to avoid trying to pull lines from the next column.
if (child->GetNextSibling() &&
!(GetStateBits() & NS_FRAME_IS_DIRTY) &&
!(child->GetNextSibling()->GetStateBits() & NS_FRAME_IS_DIRTY)) {
kidReflowInput.mFlags.mNextInFlowUntouched = true;
}
ReflowOutput kidDesiredSize(wm, aDesiredSize.mFlags);
// XXX it would be cool to consult the float manager for the
// previous block to figure out the region of floats from the
// previous column that extend into this column, and subtract
// that region from the new float manager. So you could stick a
// really big float in the first column and text in following
// columns would flow around it.
// Reflow the frame
LogicalPoint origin(wm,
childOrigin.I(wm) +
kidReflowInput.ComputedLogicalMargin().IStart(wm),
childOrigin.B(wm) +
kidReflowInput.ComputedLogicalMargin().BStart(wm));
ReflowChild(child, PresContext(), kidDesiredSize, kidReflowInput,
wm, origin, containerSize, 0, aStatus);
reflowNext = (aStatus & NS_FRAME_REFLOW_NEXTINFLOW) != 0;
#ifdef DEBUG_roc
printf("*** Reflowed child #%d %p: status = %d, desiredSize=%d,%d CarriedOutBEndMargin=%d\n",
columnCount, (void*)child, aStatus, kidDesiredSize.Width(), kidDesiredSize.Height(),
kidDesiredSize.mCarriedOutBEndMargin.get());
#endif
NS_FRAME_TRACE_REFLOW_OUT("Column::Reflow", aStatus);
*aCarriedOutBEndMargin = kidDesiredSize.mCarriedOutBEndMargin;
FinishReflowChild(child, PresContext(), kidDesiredSize,
&kidReflowInput, wm, childOrigin, containerSize, 0);
childContentBEnd = nsLayoutUtils::CalculateContentBEnd(wm, child);
if (childContentBEnd > aConfig.mColMaxBSize) {
allFit = false;
}
if (childContentBEnd > availSize.BSize(wm)) {
aColData.mMaxOverflowingBSize = std::max(childContentBEnd,
aColData.mMaxOverflowingBSize);
}
}
contentRect.UnionRect(contentRect, child->GetRect());
ConsiderChildOverflow(overflowRects, child);
contentBEnd = std::max(contentBEnd, childContentBEnd);
aColData.mLastBSize = childContentBEnd;
aColData.mSumBSize += childContentBEnd;
// Build a continuation column if necessary
nsIFrame* kidNextInFlow = child->GetNextInFlow();
if (NS_FRAME_IS_FULLY_COMPLETE(aStatus) && !NS_FRAME_IS_TRUNCATED(aStatus)) {
NS_ASSERTION(!kidNextInFlow, "next in flow should have been deleted");
child = nullptr;
break;
} else {
++columnCount;
// Make sure that the column has a next-in-flow. If not, we must
// create one to hold the overflowing stuff, even if we're just
// going to put it on our overflow list and let *our*
// next in flow handle it.
if (!kidNextInFlow) {
NS_ASSERTION(aStatus & NS_FRAME_REFLOW_NEXTINFLOW,
"We have to create a continuation, but the block doesn't want us to reflow it?");
// We need to create a continuing column
kidNextInFlow = CreateNextInFlow(child);
}
// Make sure we reflow a next-in-flow when it switches between being
// normal or overflow container
if (NS_FRAME_OVERFLOW_IS_INCOMPLETE(aStatus)) {
if (!(kidNextInFlow->GetStateBits() & NS_FRAME_IS_OVERFLOW_CONTAINER)) {
aStatus |= NS_FRAME_REFLOW_NEXTINFLOW;
reflowNext = true;
kidNextInFlow->AddStateBits(NS_FRAME_IS_OVERFLOW_CONTAINER);
}
}
else if (kidNextInFlow->GetStateBits() & NS_FRAME_IS_OVERFLOW_CONTAINER) {
aStatus |= NS_FRAME_REFLOW_NEXTINFLOW;
reflowNext = true;
kidNextInFlow->RemoveStateBits(NS_FRAME_IS_OVERFLOW_CONTAINER);
}
if ((contentBEnd > aReflowInput.ComputedMaxBSize() ||
contentBEnd > aReflowInput.ComputedBSize()) &&
aConfig.mBalanceColCount < INT32_MAX) {
// We overflowed vertically, but have not exceeded the number of
// columns. We're going to go into overflow columns now, so balancing
// no longer applies.
aColData.mHasExcessBSize = true;
}
if (columnCount >= aConfig.mBalanceColCount) {
// No more columns allowed here. Stop.
aStatus |= NS_FRAME_REFLOW_NEXTINFLOW;
kidNextInFlow->AddStateBits(NS_FRAME_IS_DIRTY);
// Move any of our leftover columns to our overflow list. Our
// next-in-flow will eventually pick them up.
const nsFrameList& continuationColumns = mFrames.RemoveFramesAfter(child);
if (continuationColumns.NotEmpty()) {
SetOverflowFrames(continuationColumns);
}
child = nullptr;
break;
}
}
if (PresContext()->HasPendingInterrupt()) {
// Stop the loop now while |child| still points to the frame that bailed
// out. We could keep going here and condition a bunch of the code in
// this loop on whether there's an interrupt, or even just keep going and
// trying to reflow the blocks (even though we know they'll interrupt
// right after their first line), but stopping now is conceptually the
// simplest (and probably fastest) thing.
break;
}
// Advance to the next column
child = child->GetNextSibling();
if (child) {
childOrigin.I(wm) += aConfig.mColISize + aConfig.mColGap;
#ifdef DEBUG_roc
printf("*** NEXT CHILD ORIGIN.icoord = %d\n", childOrigin.I(wm));
#endif
}
}
if (PresContext()->CheckForInterrupt(this) &&
(GetStateBits() & NS_FRAME_IS_DIRTY)) {
// Mark all our kids starting with |child| dirty
// Note that this is a CheckForInterrupt call, not a HasPendingInterrupt,
// because we might have interrupted while reflowing |child|, and since
// we're about to add a dirty bit to |child| we need to make sure that
// |this| is scheduled to have dirty bits marked on it and its ancestors.
// Otherwise, when we go to mark dirty bits on |child|'s ancestors we'll
// bail out immediately, since it'll already have a dirty bit.
for (; child; child = child->GetNextSibling()) {
child->AddStateBits(NS_FRAME_IS_DIRTY);
}
}
aColData.mMaxBSize = contentBEnd;
LogicalSize contentSize = LogicalSize(wm, contentRect.Size());
contentSize.BSize(wm) = std::max(contentSize.BSize(wm), contentBEnd);
mLastFrameStatus = aStatus;
// Apply computed and min/max values
if (aConfig.mComputedBSize != NS_INTRINSICSIZE) {
if (aReflowInput.AvailableBSize() != NS_INTRINSICSIZE) {
contentSize.BSize(wm) = std::min(contentSize.BSize(wm),
aConfig.mComputedBSize);
} else {
contentSize.BSize(wm) = aConfig.mComputedBSize;
}
} else {
// We add the "consumed" block-size back in so that we're applying
// constraints to the correct bSize value, then subtract it again
// after we've finished with the min/max calculation. This prevents us from
// having a last continuation that is smaller than the min bSize. but which
// has prev-in-flows, trigger a larger bSize than actually required.
contentSize.BSize(wm) =
aReflowInput.ApplyMinMaxBSize(contentSize.BSize(wm),
aConfig.mConsumedBSize);
}
if (aReflowInput.ComputedISize() != NS_INTRINSICSIZE) {
contentSize.ISize(wm) = aReflowInput.ComputedISize();
} else {
contentSize.ISize(wm) =
aReflowInput.ApplyMinMaxISize(contentSize.ISize(wm));
}
contentSize.ISize(wm) += borderPadding.IStartEnd(wm);
contentSize.BSize(wm) += borderPadding.BStartEnd(wm);
aDesiredSize.SetSize(wm, contentSize);
aDesiredSize.mOverflowAreas = overflowRects;
aDesiredSize.UnionOverflowAreasWithDesiredBounds();
// In vertical-rl mode, make a second pass if necessary to reposition the
// columns with the correct container width. (In other writing modes,
// correct containerSize was not required for column positioning so we don't
// need this fixup.)
if (wm.IsVerticalRL() && containerSize.width != contentSize.Width(wm)) {
const nsSize finalContainerSize = aDesiredSize.PhysicalSize();
for (nsIFrame* child : mFrames) {
// Get the logical position as set previously using a provisional or
// dummy containerSize, and reset with the correct container size.
child->SetPosition(wm, child->GetLogicalPosition(wm, containerSize),
finalContainerSize);
}
}
#ifdef DEBUG_roc
printf("*** DONE PASS feasible=%d\n", allFit && NS_FRAME_IS_FULLY_COMPLETE(aStatus)
&& !NS_FRAME_IS_TRUNCATED(aStatus));
#endif
return allFit && NS_FRAME_IS_FULLY_COMPLETE(aStatus)
&& !NS_FRAME_IS_TRUNCATED(aStatus);
}
/* virtual */ void
nsRubyFrame::Reflow(nsPresContext* aPresContext,
ReflowOutput& aDesiredSize,
const ReflowInput& aReflowInput,
nsReflowStatus& aStatus)
{
MarkInReflow();
DO_GLOBAL_REFLOW_COUNT("nsRubyFrame");
DISPLAY_REFLOW(aPresContext, this, aReflowInput, aDesiredSize, aStatus);
MOZ_ASSERT(aStatus.IsEmpty(), "Caller should pass a fresh reflow status!");
if (!aReflowInput.mLineLayout) {
NS_ASSERTION(aReflowInput.mLineLayout,
"No line layout provided to RubyFrame reflow method.");
return;
}
// Grab overflow frames from prev-in-flow and its own.
MoveInlineOverflowToChildList(
aReflowInput.mLineLayout->LineContainerFrame());
// Clear leadings
mLeadings.Reset();
// Since the ruby base container is going to reflow not only the ruby
// base frames, but also the ruby text frames, and then *afterwards*
// we're going to reflow the ruby text containers (which do not reflow
// their children), we need to transfer NS_FRAME_IS_DIRTY status from
// the ruby text containers to their child ruby texts now, both so
// that the ruby texts are marked dirty if needed, and so that the
// ruby text container doesn't mark the ruby text frames dirty *after*
// they're reflowed and leave dirty bits in a clean tree (suppressing
// future reflows, due to lack of a queued reflow to clean them).
for (nsIFrame* child : PrincipalChildList()) {
if (child->HasAnyStateBits(NS_FRAME_IS_DIRTY) &&
child->IsRubyTextContainerFrame()) {
for (nsIFrame* grandchild : child->PrincipalChildList()) {
grandchild->AddStateBits(NS_FRAME_IS_DIRTY);
}
// Replace NS_FRAME_IS_DIRTY with NS_FRAME_HAS_DIRTY_CHILDREN so
// we still have a dirty marking, but one that we won't transfer
// to children again.
child->RemoveStateBits(NS_FRAME_IS_DIRTY);
child->AddStateBits(NS_FRAME_HAS_DIRTY_CHILDREN);
}
}
// Begin the span for the ruby frame
WritingMode frameWM = aReflowInput.GetWritingMode();
WritingMode lineWM = aReflowInput.mLineLayout->GetWritingMode();
LogicalMargin borderPadding = aReflowInput.ComputedLogicalBorderPadding();
nscoord startEdge = 0;
const bool boxDecorationBreakClone =
StyleBorder()->mBoxDecorationBreak == StyleBoxDecorationBreak::Clone;
if (boxDecorationBreakClone || !GetPrevContinuation()) {
startEdge = borderPadding.IStart(frameWM);
}
NS_ASSERTION(aReflowInput.AvailableISize() != NS_UNCONSTRAINEDSIZE,
"should no longer use available widths");
nscoord availableISize = aReflowInput.AvailableISize();
availableISize -= startEdge + borderPadding.IEnd(frameWM);
aReflowInput.mLineLayout->BeginSpan(this, &aReflowInput,
startEdge, availableISize, &mBaseline);
for (RubySegmentEnumerator e(this); !e.AtEnd(); e.Next()) {
ReflowSegment(aPresContext, aReflowInput, e.GetBaseContainer(), aStatus);
if (aStatus.IsInlineBreak()) {
// A break occurs when reflowing the segment.
// Don't continue reflowing more segments.
break;
}
}
ContinuationTraversingState pullState(this);
while (aStatus.IsEmpty()) {
nsRubyBaseContainerFrame* baseContainer =
PullOneSegment(aReflowInput.mLineLayout, pullState);
if (!baseContainer) {
// No more continuations after, finish now.
break;
}
ReflowSegment(aPresContext, aReflowInput, baseContainer, aStatus);
}
// We never handle overflow in ruby.
MOZ_ASSERT(!aStatus.IsOverflowIncomplete());
aDesiredSize.ISize(lineWM) = aReflowInput.mLineLayout->EndSpan(this);
if (boxDecorationBreakClone || !GetPrevContinuation()) {
aDesiredSize.ISize(lineWM) += borderPadding.IStart(frameWM);
}
if (boxDecorationBreakClone || aStatus.IsComplete()) {
aDesiredSize.ISize(lineWM) += borderPadding.IEnd(frameWM);
}
// Update descendant leadings of ancestor ruby base container.
if (nsRubyBaseContainerFrame* rbc = FindRubyBaseContainerAncestor(this)) {
rbc->UpdateDescendantLeadings(mLeadings);
}
nsLayoutUtils::SetBSizeFromFontMetrics(this, aDesiredSize,
borderPadding, lineWM, frameWM);
}
/* virtual */ void
nsRubyBaseContainerFrame::Reflow(nsPresContext* aPresContext,
ReflowOutput& aDesiredSize,
const ReflowInput& aReflowInput,
nsReflowStatus& aStatus)
{
MarkInReflow();
DO_GLOBAL_REFLOW_COUNT("nsRubyBaseContainerFrame");
DISPLAY_REFLOW(aPresContext, this, aReflowInput, aDesiredSize, aStatus);
aStatus = NS_FRAME_COMPLETE;
if (!aReflowInput.mLineLayout) {
NS_ASSERTION(
aReflowInput.mLineLayout,
"No line layout provided to RubyBaseContainerFrame reflow method.");
return;
}
mDescendantLeadings.Reset();
MoveOverflowToChildList();
// Ask text containers to drain overflows
AutoRubyTextContainerArray textContainers(this);
const uint32_t rtcCount = textContainers.Length();
for (uint32_t i = 0; i < rtcCount; i++) {
textContainers[i]->MoveOverflowToChildList();
}
WritingMode lineWM = aReflowInput.mLineLayout->GetWritingMode();
LogicalSize availSize(lineWM, aReflowInput.AvailableISize(),
aReflowInput.AvailableBSize());
// We have a reflow state and a line layout for each RTC.
// They are conceptually the state of the RTCs, but we don't actually
// reflow those RTCs in this code. These two arrays are holders of
// the reflow states and line layouts.
// Since there are pointers refer to reflow states and line layouts,
// it is necessary to guarantee that they won't be moved. For this
// reason, they are wrapped in UniquePtr here.
AutoTArray<UniquePtr<ReflowInput>, RTC_ARRAY_SIZE> reflowInputs;
AutoTArray<UniquePtr<nsLineLayout>, RTC_ARRAY_SIZE> lineLayouts;
reflowInputs.SetCapacity(rtcCount);
lineLayouts.SetCapacity(rtcCount);
// Begin the line layout for each ruby text container in advance.
bool hasSpan = false;
for (uint32_t i = 0; i < rtcCount; i++) {
nsRubyTextContainerFrame* textContainer = textContainers[i];
if (textContainer->IsSpanContainer()) {
hasSpan = true;
}
ReflowInput* reflowInput = new ReflowInput(
aPresContext, *aReflowInput.mParentReflowInput, textContainer,
availSize.ConvertTo(textContainer->GetWritingMode(), lineWM));
reflowInputs.AppendElement(reflowInput);
nsLineLayout* lineLayout = new nsLineLayout(aPresContext,
reflowInput->mFloatManager,
reflowInput, nullptr,
aReflowInput.mLineLayout);
lineLayout->SetSuppressLineWrap(true);
lineLayouts.AppendElement(lineLayout);
// Line number is useless for ruby text
// XXX nullptr here may cause problem, see comments for
// nsLineLayout::mBlockRI and nsLineLayout::AddFloat
lineLayout->Init(nullptr, reflowInput->CalcLineHeight(), -1);
reflowInput->mLineLayout = lineLayout;
// Border and padding are suppressed on ruby text containers.
// If the writing mode is vertical-rl, the horizontal position of
// rt frames will be updated when reflowing this text container,
// hence leave container size 0 here for now.
lineLayout->BeginLineReflow(0, 0, reflowInput->ComputedISize(),
NS_UNCONSTRAINEDSIZE,
false, false, lineWM, nsSize(0, 0));
lineLayout->AttachRootFrameToBaseLineLayout();
}
aReflowInput.mLineLayout->BeginSpan(this, &aReflowInput,
0, aReflowInput.AvailableISize(),
&mBaseline);
bool allowInitialLineBreak, allowLineBreak;
GetIsLineBreakAllowed(this, aReflowInput.mLineLayout->LineIsBreakable(),
&allowInitialLineBreak, &allowLineBreak);
nscoord isize = 0;
// Reflow columns excluding any span
RubyReflowInput reflowInput = {
allowInitialLineBreak, allowLineBreak && !hasSpan,
textContainers, aReflowInput, reflowInputs
};
isize = ReflowColumns(reflowInput, aStatus);
DebugOnly<nscoord> lineSpanSize = aReflowInput.mLineLayout->EndSpan(this);
aDesiredSize.ISize(lineWM) = isize;
// When there are no frames inside the ruby base container, EndSpan
// will return 0. However, in this case, the actual width of the
// container could be non-zero because of non-empty ruby annotations.
// XXX When bug 765861 gets fixed, this warning should be upgraded.
NS_WARNING_ASSERTION(
NS_INLINE_IS_BREAK(aStatus) || isize == lineSpanSize || mFrames.IsEmpty(),
"bad isize");
// If there exists any span, the columns must either be completely
// reflowed, or be not reflowed at all.
MOZ_ASSERT(NS_INLINE_IS_BREAK_BEFORE(aStatus) ||
NS_FRAME_IS_COMPLETE(aStatus) || !hasSpan);
if (!NS_INLINE_IS_BREAK_BEFORE(aStatus) &&
NS_FRAME_IS_COMPLETE(aStatus) && hasSpan) {
// Reflow spans
RubyReflowInput reflowInput = {
false, false, textContainers, aReflowInput, reflowInputs
};
nscoord spanISize = ReflowSpans(reflowInput);
isize = std::max(isize, spanISize);
}
for (uint32_t i = 0; i < rtcCount; i++) {
// It happens before the ruby text container is reflowed, and that
// when it is reflowed, it will just use this size.
nsRubyTextContainerFrame* textContainer = textContainers[i];
nsLineLayout* lineLayout = lineLayouts[i].get();
RubyUtils::ClearReservedISize(textContainer);
nscoord rtcISize = lineLayout->GetCurrentICoord();
// Only span containers and containers with collapsed annotations
// need reserving isize. For normal ruby text containers, their
// children will be expanded properly. We only need to expand their
// own size.
if (!textContainer->IsSpanContainer()) {
rtcISize = isize;
} else if (isize > rtcISize) {
RubyUtils::SetReservedISize(textContainer, isize - rtcISize);
}
lineLayout->VerticalAlignLine();
textContainer->SetISize(rtcISize);
lineLayout->EndLineReflow();
}
// Border and padding are suppressed on ruby base container,
// create a fake borderPadding for setting BSize.
WritingMode frameWM = aReflowInput.GetWritingMode();
LogicalMargin borderPadding(frameWM);
nsLayoutUtils::SetBSizeFromFontMetrics(this, aDesiredSize,
borderPadding, lineWM, frameWM);
}
