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
nsInlineFrame::Reflow(nsPresContext* aPresContext,
ReflowOutput& aMetrics,
const ReflowInput& aReflowInput,
nsReflowStatus& aStatus)
{
MarkInReflow();
DO_GLOBAL_REFLOW_COUNT("nsInlineFrame");
DISPLAY_REFLOW(aPresContext, this, aReflowInput, aMetrics, aStatus);
MOZ_ASSERT(aStatus.IsEmpty(), "Caller should pass a fresh reflow status!");
if (nullptr == aReflowInput.mLineLayout) {
NS_ERROR("must have non-null aReflowInput.mLineLayout");
return;
}
if (IsFrameTreeTooDeep(aReflowInput, aMetrics, aStatus)) {
return;
}
bool lazilySetParentPointer = false;
// Check for an overflow list with our prev-in-flow
nsInlineFrame* prevInFlow = (nsInlineFrame*)GetPrevInFlow();
if (prevInFlow) {
AutoFrameListPtr prevOverflowFrames(aPresContext,
prevInFlow->StealOverflowFrames());
if (prevOverflowFrames) {
// When pushing and pulling frames we need to check for whether any
// views need to be reparented.
nsContainerFrame::ReparentFrameViewList(*prevOverflowFrames, prevInFlow,
this);
// Check if we should do the lazilySetParentPointer optimization.
// Only do it in simple cases where we're being reflowed for the
// first time, nothing (e.g. bidi resolution) has already given
// us children, and there's no next-in-flow, so all our frames
// will be taken from prevOverflowFrames.
if ((GetStateBits() & NS_FRAME_FIRST_REFLOW) && mFrames.IsEmpty() &&
!GetNextInFlow()) {
// If our child list is empty, just put the new frames into it.
// Note that we don't set the parent pointer for the new frames. Instead wait
// to do this until we actually reflow the frame. If the overflow list contains
// thousands of frames this is a big performance issue (see bug #5588)
mFrames.SetFrames(*prevOverflowFrames);
lazilySetParentPointer = true;
} else {
// Insert the new frames at the beginning of the child list
// and set their parent pointer
const nsFrameList::Slice& newFrames =
mFrames.InsertFrames(this, nullptr, *prevOverflowFrames);
// If our prev in flow was under the first continuation of a first-line
// frame then we need to reparent the style contexts to remove the
// the special first-line styling. In the lazilySetParentPointer case
// we reparent the style contexts when we set their parents in
// nsInlineFrame::ReflowFrames and nsInlineFrame::ReflowInlineFrame.
if (aReflowInput.mLineLayout->GetInFirstLine()) {
ReparentChildListStyle(aPresContext, newFrames, this);
}
}
}
}
// It's also possible that we have an overflow list for ourselves
#ifdef DEBUG
if (GetStateBits() & NS_FRAME_FIRST_REFLOW) {
// If it's our initial reflow, then we should not have an overflow list.
// However, add an assertion in case we get reflowed more than once with
// the initial reflow reason
nsFrameList* overflowFrames = GetOverflowFrames();
NS_ASSERTION(!overflowFrames || overflowFrames->IsEmpty(),
"overflow list is not empty for initial reflow");
}
#endif
if (!(GetStateBits() & NS_FRAME_FIRST_REFLOW)) {
DrainFlags flags =
lazilySetParentPointer ? eDontReparentFrames : DrainFlags(0);
if (aReflowInput.mLineLayout->GetInFirstLine()) {
flags = DrainFlags(flags | eInFirstLine);
}
DrainSelfOverflowListInternal(flags);
}
// Set our own reflow state (additional state above and beyond aReflowInput).
InlineReflowInput irs;
irs.mPrevFrame = nullptr;
irs.mLineContainer = aReflowInput.mLineLayout->LineContainerFrame();
irs.mLineLayout = aReflowInput.mLineLayout;
irs.mNextInFlow = (nsInlineFrame*) GetNextInFlow();
irs.mSetParentPointer = lazilySetParentPointer;
if (mFrames.IsEmpty()) {
// Try to pull over one frame before starting so that we know
// whether we have an anonymous block or not.
bool complete;
(void) PullOneFrame(aPresContext, irs, &complete);
}
ReflowFrames(aPresContext, aReflowInput, irs, aMetrics, aStatus);
ReflowAbsoluteFrames(aPresContext, aMetrics, aReflowInput, aStatus);
// Note: the line layout code will properly compute our
// overflow-rect state for us.
NS_FRAME_SET_TRUNCATION(aStatus, aReflowInput, aMetrics);
}
void
nsFirstLineFrame::Reflow(nsPresContext* aPresContext,
ReflowOutput& aMetrics,
const ReflowInput& aReflowInput,
nsReflowStatus& aStatus)
{
MarkInReflow();
MOZ_ASSERT(aStatus.IsEmpty(), "Caller should pass a fresh reflow status!");
if (nullptr == aReflowInput.mLineLayout) {
return; // XXX does this happen? why?
}
// Check for an overflow list with our prev-in-flow
nsFirstLineFrame* prevInFlow = (nsFirstLineFrame*)GetPrevInFlow();
if (prevInFlow) {
AutoFrameListPtr prevOverflowFrames(aPresContext,
prevInFlow->StealOverflowFrames());
if (prevOverflowFrames) {
// Reparent the new frames and their style contexts.
const nsFrameList::Slice& newFrames =
mFrames.InsertFrames(this, nullptr, *prevOverflowFrames);
ReparentChildListStyle(aPresContext, newFrames, this);
}
}
// It's also possible that we have an overflow list for ourselves.
DrainSelfOverflowList();
// Set our own reflow state (additional state above and beyond aReflowInput).
InlineReflowInput irs;
irs.mPrevFrame = nullptr;
irs.mLineContainer = aReflowInput.mLineLayout->LineContainerFrame();
irs.mLineLayout = aReflowInput.mLineLayout;
irs.mNextInFlow = (nsInlineFrame*) GetNextInFlow();
bool wasEmpty = mFrames.IsEmpty();
if (wasEmpty) {
// Try to pull over one frame before starting so that we know
// whether we have an anonymous block or not.
bool complete;
PullOneFrame(aPresContext, irs, &complete);
}
if (nullptr == GetPrevInFlow()) {
// XXX This is pretty sick, but what we do here is to pull-up, in
// advance, all of the next-in-flows children. We re-resolve their
// style while we are at at it so that when we reflow they have
// the right style.
//
// All of this is so that text-runs reflow properly.
irs.mPrevFrame = mFrames.LastChild();
for (;;) {
bool complete;
nsIFrame* frame = PullOneFrame(aPresContext, irs, &complete);
if (!frame) {
break;
}
irs.mPrevFrame = frame;
}
irs.mPrevFrame = nullptr;
}
NS_ASSERTION(!aReflowInput.mLineLayout->GetInFirstLine(),
"Nested first-line frames? BOGUS");
aReflowInput.mLineLayout->SetInFirstLine(true);
ReflowFrames(aPresContext, aReflowInput, irs, aMetrics, aStatus);
aReflowInput.mLineLayout->SetInFirstLine(false);
ReflowAbsoluteFrames(aPresContext, aMetrics, aReflowInput, aStatus);
// Note: the line layout code will properly compute our overflow state for us
}
/*
* Note: we largely position/size out our children (page frames) using
* \*physical\* x/y/width/height values, because the print preview UI is always
* arranged in the same orientation, regardless of writing mode.
*/
void
nsSimplePageSequenceFrame::Reflow(nsPresContext* aPresContext,
ReflowOutput& aDesiredSize,
const ReflowInput& aReflowInput,
nsReflowStatus& aStatus)
{
MarkInReflow();
NS_PRECONDITION(aPresContext->IsRootPaginatedDocument(),
"A Page Sequence is only for real pages");
DO_GLOBAL_REFLOW_COUNT("nsSimplePageSequenceFrame");
DISPLAY_REFLOW(aPresContext, this, aReflowInput, aDesiredSize, aStatus);
MOZ_ASSERT(aStatus.IsEmpty(), "Caller should pass a fresh reflow status!");
NS_FRAME_TRACE_REFLOW_IN("nsSimplePageSequenceFrame::Reflow");
// Don't do incremental reflow until we've taught tables how to do
// it right in paginated mode.
if (!(GetStateBits() & NS_FRAME_FIRST_REFLOW)) {
// Return our desired size
SetDesiredSize(aDesiredSize, aReflowInput, mSize.width, mSize.height);
aDesiredSize.SetOverflowAreasToDesiredBounds();
FinishAndStoreOverflow(&aDesiredSize);
if (GetRect().Width() != aDesiredSize.Width()) {
// Our width is changing; we need to re-center our children (our pages).
for (nsFrameList::Enumerator e(mFrames); !e.AtEnd(); e.Next()) {
nsIFrame* child = e.get();
nsMargin pageCSSMargin = child->GetUsedMargin();
nscoord centeringMargin =
ComputeCenteringMargin(aReflowInput.ComputedWidth(),
child->GetRect().Width(),
pageCSSMargin);
nscoord newX = pageCSSMargin.left + centeringMargin;
// Adjust the child's x-position:
child->MovePositionBy(nsPoint(newX - child->GetNormalPosition().x, 0));
}
}
return;
}
// See if we can get a Print Settings from the Context
if (!mPageData->mPrintSettings &&
aPresContext->Medium() == nsGkAtoms::print) {
mPageData->mPrintSettings = aPresContext->GetPrintSettings();
}
// now get out margins & edges
if (mPageData->mPrintSettings) {
nsIntMargin unwriteableTwips;
mPageData->mPrintSettings->GetUnwriteableMarginInTwips(unwriteableTwips);
NS_ASSERTION(unwriteableTwips.left >= 0 && unwriteableTwips.top >= 0 &&
unwriteableTwips.right >= 0 && unwriteableTwips.bottom >= 0,
"Unwriteable twips should be non-negative");
nsIntMargin marginTwips;
mPageData->mPrintSettings->GetMarginInTwips(marginTwips);
mMargin = aPresContext->CSSTwipsToAppUnits(marginTwips + unwriteableTwips);
int16_t printType;
mPageData->mPrintSettings->GetPrintRange(&printType);
mPrintRangeType = printType;
nsIntMargin edgeTwips;
mPageData->mPrintSettings->GetEdgeInTwips(edgeTwips);
// sanity check the values. three inches are sometimes needed
int32_t inchInTwips = NS_INCHES_TO_INT_TWIPS(3.0);
edgeTwips.top = clamped(edgeTwips.top, 0, inchInTwips);
edgeTwips.bottom = clamped(edgeTwips.bottom, 0, inchInTwips);
edgeTwips.left = clamped(edgeTwips.left, 0, inchInTwips);
edgeTwips.right = clamped(edgeTwips.right, 0, inchInTwips);
mPageData->mEdgePaperMargin =
aPresContext->CSSTwipsToAppUnits(edgeTwips + unwriteableTwips);
}
// *** Special Override ***
// If this is a sub-sdoc (meaning it doesn't take the whole page)
// and if this Document is in the upper left hand corner
// we need to suppress the top margin or it will reflow too small
nsSize pageSize = aPresContext->GetPageSize();
mPageData->mReflowSize = pageSize;
mPageData->mReflowMargin = mMargin;
// We use the CSS "margin" property on the -moz-page pseudoelement
// to determine the space between each page in print preview.
// Keep a running y-offset for each page.
nscoord y = 0;
nscoord maxXMost = 0;
// Tile the pages vertically
ReflowOutput kidSize(aReflowInput);
for (nsFrameList::Enumerator e(mFrames); !e.AtEnd(); e.Next()) {
nsIFrame* kidFrame = e.get();
// Set the shared data into the page frame before reflow
nsPageFrame * pf = static_cast<nsPageFrame*>(kidFrame);
pf->SetSharedPageData(mPageData);
// Reflow the page
ReflowInput kidReflowInput(aPresContext, aReflowInput, kidFrame,
LogicalSize(kidFrame->GetWritingMode(),
pageSize));
nsReflowStatus status;
kidReflowInput.SetComputedISize(kidReflowInput.AvailableISize());
//kidReflowInput.SetComputedHeight(kidReflowInput.AvailableHeight());
PR_PL(("AV ISize: %d BSize: %d\n",
kidReflowInput.AvailableISize(),
kidReflowInput.AvailableBSize()));
nsMargin pageCSSMargin = kidReflowInput.ComputedPhysicalMargin();
y += pageCSSMargin.top;
nscoord x = pageCSSMargin.left;
// Place and size the page.
ReflowChild(kidFrame, aPresContext, kidSize, kidReflowInput, x, y, 0, status);
// If the page is narrower than our width, then center it horizontally:
x += ComputeCenteringMargin(aReflowInput.ComputedWidth(),
kidSize.Width(), pageCSSMargin);
FinishReflowChild(kidFrame, aPresContext, kidSize, nullptr, x, y, 0);
y += kidSize.Height();
y += pageCSSMargin.bottom;
maxXMost = std::max(maxXMost, x + kidSize.Width() + pageCSSMargin.right);
// Is the page complete?
nsIFrame* kidNextInFlow = kidFrame->GetNextInFlow();
if (status.IsFullyComplete()) {
NS_ASSERTION(!kidNextInFlow, "bad child flow list");
} else if (!kidNextInFlow) {
// The page isn't complete and it doesn't have a next-in-flow, so
// create a continuing page.
nsIFrame* continuingPage = aPresContext->PresShell()->FrameConstructor()->
CreateContinuingFrame(aPresContext, kidFrame, this);
// Add it to our child list
mFrames.InsertFrame(nullptr, kidFrame, continuingPage);
}
}
// Get Total Page Count
// XXXdholbert technically we could calculate this in the loop above,
// instead of needing a separate walk.
int32_t pageTot = mFrames.GetLength();
// Set Page Number Info
int32_t pageNum = 1;
for (nsFrameList::Enumerator e(mFrames); !e.AtEnd(); e.Next()) {
MOZ_ASSERT(e.get()->IsPageFrame(),
"only expecting nsPageFrame children. Other children will make "
"this static_cast bogus & probably violate other assumptions");
nsPageFrame* pf = static_cast<nsPageFrame*>(e.get());
pf->SetPageNumInfo(pageNum, pageTot);
pageNum++;
}
nsAutoString formattedDateString;
PRTime now = PR_Now();
if (NS_SUCCEEDED(DateTimeFormat::FormatPRTime(kDateFormatShort,
kTimeFormatNoSeconds,
now,
formattedDateString))) {
SetDateTimeStr(formattedDateString);
}
// Return our desired size
// Adjust the reflow size by PrintPreviewScale so the scrollbars end up the
// correct size
SetDesiredSize(aDesiredSize, aReflowInput, maxXMost, y);
aDesiredSize.SetOverflowAreasToDesiredBounds();
FinishAndStoreOverflow(&aDesiredSize);
// cache the size so we can set the desired size
// for the other reflows that happen
mSize.width = maxXMost;
mSize.height = y;
NS_FRAME_TRACE_REFLOW_OUT("nsSimplePageSequeceFrame::Reflow", aStatus);
NS_FRAME_SET_TRUNCATION(aStatus, aReflowInput, aDesiredSize);
}
/* 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);
}
void
nsFirstLetterFrame::Reflow(nsPresContext* aPresContext,
ReflowOutput& aMetrics,
const ReflowInput& aReflowInput,
nsReflowStatus& aReflowStatus)
{
MarkInReflow();
DO_GLOBAL_REFLOW_COUNT("nsFirstLetterFrame");
DISPLAY_REFLOW(aPresContext, this, aReflowInput, aMetrics, aReflowStatus);
MOZ_ASSERT(aReflowStatus.IsEmpty(), "Caller should pass a fresh reflow status!");
// Grab overflow list
DrainOverflowFrames(aPresContext);
nsIFrame* kid = mFrames.FirstChild();
// Setup reflow state for our child
WritingMode wm = aReflowInput.GetWritingMode();
LogicalSize availSize = aReflowInput.AvailableSize();
const LogicalMargin& bp = aReflowInput.ComputedLogicalBorderPadding();
NS_ASSERTION(availSize.ISize(wm) != NS_UNCONSTRAINEDSIZE,
"should no longer use unconstrained inline size");
availSize.ISize(wm) -= bp.IStartEnd(wm);
if (NS_UNCONSTRAINEDSIZE != availSize.BSize(wm)) {
availSize.BSize(wm) -= bp.BStartEnd(wm);
}
WritingMode lineWM = aMetrics.GetWritingMode();
ReflowOutput kidMetrics(lineWM);
// Reflow the child
if (!aReflowInput.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.
WritingMode kidWritingMode = WritingModeForLine(wm, kid);
LogicalSize kidAvailSize = availSize.ConvertTo(kidWritingMode, wm);
ReflowInput rs(aPresContext, aReflowInput, kid, kidAvailSize);
nsLineLayout ll(aPresContext, nullptr, &aReflowInput, nullptr, nullptr);
ll.BeginLineReflow(bp.IStart(wm), bp.BStart(wm),
availSize.ISize(wm), NS_UNCONSTRAINEDSIZE,
false, true, kidWritingMode,
nsSize(aReflowInput.AvailableWidth(),
aReflowInput.AvailableHeight()));
rs.mLineLayout = ≪
ll.SetInFirstLetter(true);
ll.SetFirstLetterStyleOK(true);
kid->Reflow(aPresContext, kidMetrics, 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 = kidMetrics.BlockStartAscent();
// Place and size the child and update the output metrics
LogicalSize convertedSize = kidMetrics.Size(lineWM).ConvertTo(wm, lineWM);
kid->SetRect(nsRect(bp.IStart(wm), bp.BStart(wm),
convertedSize.ISize(wm), convertedSize.BSize(wm)));
kid->FinishAndStoreOverflow(&kidMetrics, rs.mStyleDisplay);
kid->DidReflow(aPresContext, nullptr);
convertedSize.ISize(wm) += bp.IStartEnd(wm);
convertedSize.BSize(wm) += bp.BStartEnd(wm);
aMetrics.SetSize(wm, convertedSize);
aMetrics.SetBlockStartAscent(kidMetrics.BlockStartAscent() +
bp.BStart(wm));
// 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);
FinishAndStoreOverflow(&aMetrics, aReflowInput.mStyleDisplay);
} else {
// Pretend we are a span and reflow the child frame
nsLineLayout* ll = aReflowInput.mLineLayout;
bool pushedFrame;
ll->SetInFirstLetter(
mStyleContext->GetPseudo() == nsCSSPseudoElements::firstLetter);
ll->BeginSpan(this, &aReflowInput, bp.IStart(wm),
availSize.ISize(wm), &mBaseline);
ll->ReflowFrame(kid, aReflowStatus, &kidMetrics, pushedFrame);
NS_ASSERTION(lineWM.IsVertical() == wm.IsVertical(),
"we're assuming we can mix sizes between lineWM and wm "
"since we shouldn't have orthogonal writing modes within "
"a line.");
aMetrics.ISize(lineWM) = ll->EndSpan(this) + bp.IStartEnd(wm);
ll->SetInFirstLetter(false);
if (mStyleContext->StyleTextReset()->mInitialLetterSize != 0.0f) {
aMetrics.SetBlockStartAscent(kidMetrics.BlockStartAscent() +
bp.BStart(wm));
aMetrics.BSize(lineWM) = kidMetrics.BSize(lineWM) + bp.BStartEnd(wm);
} else {
nsLayoutUtils::SetBSizeFromFontMetrics(this, aMetrics, bp, lineWM, wm);
}
}
if (!aReflowStatus.IsInlineBreakBefore()) {
// Create a continuation or remove existing continuations based on
// the reflow completion status.
if (aReflowStatus.IsComplete()) {
if (aReflowInput.mLineLayout) {
aReflowInput.mLineLayout->SetFirstLetterStyleOK(false);
}
nsIFrame* kidNextInFlow = kid->GetNextInFlow();
if (kidNextInFlow) {
// Remove all of the childs next-in-flows
kidNextInFlow->GetParent()->DeleteNextInFlowChild(kidNextInFlow, true);
}
} else {
// Create a continuation for the child frame if it doesn't already
// have one.
if (!IsFloating()) {
CreateNextInFlow(kid);
// And then push it to our overflow list
const nsFrameList& overflow = mFrames.RemoveFramesAfter(kid);
if (overflow.NotEmpty()) {
SetOverflowFrames(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;
CreateContinuationForFloatingParent(aPresContext, kid,
&continuation, true);
}
}
}
NS_FRAME_SET_TRUNCATION(aReflowStatus, aReflowInput, aMetrics);
}