// static
LogicalRect
nsFloatManager::CalculateRegionFor(WritingMode aWM,
nsIFrame* aFloat,
const LogicalMargin& aMargin,
const nsSize& aContainerSize)
{
// We consider relatively positioned frames at their original position.
LogicalRect region(aWM, nsRect(aFloat->GetNormalPosition(),
aFloat->GetSize()),
aContainerSize);
// Float region includes its margin
region.Inflate(aWM, aMargin);
// Don't store rectangles with negative margin-box width or height in
// the float manager; it can't deal with them.
if (region.ISize(aWM) < 0) {
// Preserve the right margin-edge for left floats and the left
// margin-edge for right floats
const nsStyleDisplay* display = aFloat->StyleDisplay();
StyleFloat floatStyle = display->PhysicalFloats(aWM);
if ((StyleFloat::Left == floatStyle) == aWM.IsBidiLTR()) {
region.IStart(aWM) = region.IEnd(aWM);
}
region.ISize(aWM) = 0;
}
if (region.BSize(aWM) < 0) {
region.BSize(aWM) = 0;
}
return region;
}
nsresult
nsFloatManager::AddFloat(nsIFrame* aFloatFrame, const LogicalRect& aMarginRect,
WritingMode aWM, nscoord aContainerWidth)
{
NS_ASSERTION(aMarginRect.ISize(aWM) >= 0, "negative inline size!");
NS_ASSERTION(aMarginRect.BSize(aWM) >= 0, "negative block size!");
FloatInfo info(aFloatFrame, aWM, aMarginRect + mOffset);
// Set mLeftBEnd and mRightBEnd.
if (HasAnyFloats()) {
FloatInfo &tail = mFloats[mFloats.Length() - 1];
info.mLeftBEnd = tail.mLeftBEnd;
info.mRightBEnd = tail.mRightBEnd;
} else {
info.mLeftBEnd = nscoord_MIN;
info.mRightBEnd = nscoord_MIN;
}
uint8_t floatStyle = aFloatFrame->StyleDisplay()->mFloats;
NS_ASSERTION(floatStyle == NS_STYLE_FLOAT_LEFT ||
floatStyle == NS_STYLE_FLOAT_RIGHT, "unexpected float");
nscoord& sideBEnd =
((floatStyle == NS_STYLE_FLOAT_LEFT) == aWM.IsBidiLTR()) ? info.mLeftBEnd
: info.mRightBEnd;
nscoord thisBEnd = info.mRect.BEnd(aWM);
if (thisBEnd > sideBEnd)
sideBEnd = thisBEnd;
if (!mFloats.AppendElement(info))
return NS_ERROR_OUT_OF_MEMORY;
return NS_OK;
}
/* virtual */
LogicalSize
nsFieldSetFrame::ComputeSize(nsRenderingContext *aRenderingContext,
WritingMode aWM,
const LogicalSize& aCBSize,
nscoord aAvailableISize,
const LogicalSize& aMargin,
const LogicalSize& aBorder,
const LogicalSize& aPadding,
ComputeSizeFlags aFlags)
{
LogicalSize result =
nsContainerFrame::ComputeSize(aRenderingContext, aWM,
aCBSize, aAvailableISize,
aMargin, aBorder, aPadding, aFlags);
// XXX The code below doesn't make sense if the caller's writing mode
// is orthogonal to this frame's. Not sure yet what should happen then;
// for now, just bail out.
if (aWM.IsVertical() != GetWritingMode().IsVertical()) {
return result;
}
// Fieldsets never shrink below their min width.
// If we're a container for font size inflation, then shrink
// wrapping inside of us should not apply font size inflation.
AutoMaybeDisableFontInflation an(this);
nscoord minISize = GetMinISize(aRenderingContext);
if (minISize > result.ISize(aWM)) {
result.ISize(aWM) = minISize;
}
return result;
}
nscoord
nsSubDocumentFrame::GetIntrinsicBSize()
{
// <frame> processing does not use this routine, only <iframe>
NS_ASSERTION(IsInline(), "Shouldn't have been called");
if (mContent->IsXULElement()) {
return 0;
}
NS_ASSERTION(ObtainIntrinsicSizeFrame() == nullptr,
"Intrinsic bsize should come from the embedded document.");
// Use size of 300px x 150px, for compatibility with IE, and per CSS2.1 draft.
WritingMode wm = GetWritingMode();
return nsPresContext::CSSPixelsToAppUnits(wm.IsVertical() ? 300 : 150);
}
nscoord
nsSubDocumentFrame::GetIntrinsicISize()
{
if (!IsInline()) {
return 0; // HTML <frame> has no useful intrinsic isize
}
if (mContent->IsXULElement()) {
return 0; // XUL <iframe> and <browser> have no useful intrinsic isize
}
NS_ASSERTION(ObtainIntrinsicSizeFrame() == nullptr,
"Intrinsic isize should come from the embedded document.");
// We must be an HTML <iframe>. Default to size of 300px x 150px, for IE
// compat (and per CSS2.1 draft).
WritingMode wm = GetWritingMode();
return nsPresContext::CSSPixelsToAppUnits(wm.IsVertical() ? 150 : 300);
}
/* returns a Direction struct containing the horizontal and vertical direction
*/
nsResizerFrame::Direction
nsResizerFrame::GetDirection()
{
static const nsIContent::AttrValuesArray strings[] =
{ &nsGkAtoms::topleft, &nsGkAtoms::top, &nsGkAtoms::topright,
&nsGkAtoms::left, &nsGkAtoms::right,
&nsGkAtoms::bottomleft, &nsGkAtoms::bottom, &nsGkAtoms::bottomright,
&nsGkAtoms::bottomstart, &nsGkAtoms::bottomend,
nullptr
};
static const Direction directions[] =
{ {-1, -1}, {0, -1}, {1, -1},
{-1, 0}, {1, 0},
{-1, 1}, {0, 1}, {1, 1},
{-1, 1}, {1, 1}
};
if (!GetContent()) {
return directions[0]; // default: topleft
}
int32_t index = GetContent()->FindAttrValueIn(kNameSpaceID_None,
nsGkAtoms::dir,
strings, eCaseMatters);
if (index < 0) {
return directions[0]; // default: topleft
}
if (index >= 8) {
// Directions 8 and higher are RTL-aware directions and should reverse the
// horizontal component if RTL.
WritingMode wm = GetWritingMode();
if (!(wm.IsVertical() ? wm.IsVerticalLR() : wm.IsBidiLTR())) {
Direction direction = directions[index];
direction.mHorizontal *= -1;
return direction;
}
}
return directions[index];
}
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 */ nscoord
nsSVGOuterSVGFrame::GetPrefISize(nsRenderingContext *aRenderingContext)
{
nscoord result;
DISPLAY_PREF_WIDTH(this, result);
SVGSVGElement *svg = static_cast<SVGSVGElement*>(mContent);
WritingMode wm = GetWritingMode();
const nsSVGLength2& isize = wm.IsVertical()
? svg->mLengthAttributes[SVGSVGElement::ATTR_HEIGHT]
: svg->mLengthAttributes[SVGSVGElement::ATTR_WIDTH];
if (isize.IsPercentage()) {
// It looks like our containing block's isize may depend on our isize. In
// that case our behavior is undefined according to CSS 2.1 section 10.3.2.
// As a last resort, we'll fall back to returning zero.
result = nscoord(0);
// Returning zero may be unhelpful, however, as it leads to unexpected
// disappearance of %-sized SVGs in orthogonal contexts, where our
// containing block wants to shrink-wrap. So let's look for an ancestor
// with non-zero size in this dimension, and use that as a (somewhat
// arbitrary) result instead.
nsIFrame *parent = GetParent();
while (parent) {
nscoord parentISize = parent->GetLogicalSize(wm).ISize(wm);
if (parentISize > 0 && parentISize != NS_UNCONSTRAINEDSIZE) {
result = parentISize;
break;
}
parent = parent->GetParent();
}
} else {
result = nsPresContext::CSSPixelsToAppUnits(isize.GetAnimValue(svg));
if (result < 0) {
result = nscoord(0);
}
}
return result;
}
nscoord
nsSubDocumentFrame::GetIntrinsicISize()
{
if (!IsInline()) {
return 0; // HTML <frame> has no useful intrinsic isize
}
if (mContent->IsXULElement()) {
return 0; // XUL <iframe> and <browser> have no useful intrinsic isize
}
NS_ASSERTION(ObtainIntrinsicSizeFrame() == nullptr,
"Intrinsic isize should come from the embedded document.");
// We must be an HTML <iframe>. Default to size of 300px x 150px, for IE
// compat (and per CSS2.1 draft).
// This depends on the applied styles, which the comments in nsLeafFrame.h
// say it should not, but we know it cannot change during the lifetime of
// the frame because changing writing-mode leads to frame reconstruction.
WritingMode wm = GetWritingMode();
return nsPresContext::CSSPixelsToAppUnits(wm.IsVertical() ? 150 : 300);
}
nscoord
nsFloatManager::ClearFloats(WritingMode aWM, nscoord aBCoord,
uint8_t aBreakType, nscoord aContainerWidth,
uint32_t aFlags) const
{
if (!(aFlags & DONT_CLEAR_PUSHED_FLOATS) && ClearContinues(aBreakType)) {
return nscoord_MAX;
}
if (!HasAnyFloats()) {
return aBCoord;
}
LogicalPoint offset = mOffset.ConvertTo(aWM, mWritingMode, 0);
nscoord blockEnd = aBCoord + offset.B(aWM);
const FloatInfo &tail = mFloats[mFloats.Length() - 1];
switch (aBreakType) {
case NS_STYLE_CLEAR_BOTH:
blockEnd = std::max(blockEnd, tail.mLeftBEnd);
blockEnd = std::max(blockEnd, tail.mRightBEnd);
break;
case NS_STYLE_CLEAR_LEFT:
blockEnd = std::max(blockEnd, aWM.IsBidiLTR() ? tail.mLeftBEnd
: tail.mRightBEnd);
break;
case NS_STYLE_CLEAR_RIGHT:
blockEnd = std::max(blockEnd, aWM.IsBidiLTR() ? tail.mRightBEnd
: tail.mLeftBEnd);
break;
default:
// Do nothing
break;
}
blockEnd -= offset.B(aWM);
return blockEnd;
}
int32_t
nsLegendFrame::GetLogicalAlign(WritingMode aCBWM)
{
int32_t intValue = NS_STYLE_TEXT_ALIGN_START;
nsGenericHTMLElement* content = nsGenericHTMLElement::FromContent(mContent);
if (content) {
const nsAttrValue* attr = content->GetParsedAttr(nsGkAtoms::align);
if (attr && attr->Type() == nsAttrValue::eEnum) {
intValue = attr->GetEnumValue();
switch (intValue) {
case NS_STYLE_TEXT_ALIGN_LEFT:
intValue = aCBWM.IsBidiLTR() ? NS_STYLE_TEXT_ALIGN_START
: NS_STYLE_TEXT_ALIGN_END;
break;
case NS_STYLE_TEXT_ALIGN_RIGHT:
intValue = aCBWM.IsBidiLTR() ? NS_STYLE_TEXT_ALIGN_END
: NS_STYLE_TEXT_ALIGN_START;
break;
}
}
}
return intValue;
}
LogicalSize
nsProgressFrame::ComputeAutoSize(nsRenderingContext *aRenderingContext,
WritingMode aWM,
const LogicalSize& aCBSize,
nscoord aAvailableISize,
const LogicalSize& aMargin,
const LogicalSize& aBorder,
const LogicalSize& aPadding,
bool aShrinkWrap)
{
const WritingMode wm = GetWritingMode();
LogicalSize autoSize(wm);
autoSize.BSize(wm) = autoSize.ISize(wm) =
NSToCoordRound(StyleFont()->mFont.size *
nsLayoutUtils::FontSizeInflationFor(this)); // 1em
if (ResolvedOrientationIsVertical() == wm.IsVertical()) {
autoSize.ISize(wm) *= 10; // 10em
} else {
autoSize.BSize(wm) *= 10; // 10em
}
return autoSize.ConvertTo(aWM, wm);
}
nscoord
nsFormControlFrame::GetLogicalBaseline(WritingMode aWritingMode) const
{
NS_ASSERTION(!NS_SUBTREE_DIRTY(this),
"frame must not be dirty");
// Treat radio buttons and checkboxes as having an intrinsic baseline
// at the block-end of the control (use the block-end content edge rather
// than the margin edge).
// For "inverted" lines (typically in writing-mode:vertical-lr), use the
// block-start end instead.
return aWritingMode.IsLineInverted()
? GetLogicalUsedBorderAndPadding(aWritingMode).BStart(aWritingMode)
: BSize(aWritingMode) -
GetLogicalUsedBorderAndPadding(aWritingMode).BEnd(aWritingMode);
}
nscoord
nsTableWrapperFrame::ChildShrinkWrapISize(nsRenderingContext* aRenderingContext,
nsIFrame* aChildFrame,
WritingMode aWM,
LogicalSize aCBSize,
nscoord aAvailableISize,
nscoord* aMarginResult) const
{
AutoMaybeDisableFontInflation an(aChildFrame);
// For the caption frame, child's WM may differ from the table's main WM.
WritingMode childWM = aChildFrame->GetWritingMode();
SizeComputationInput offsets(aChildFrame, aRenderingContext, aWM,
aCBSize.ISize(aWM));
LogicalSize marginSize =
offsets.ComputedLogicalMargin().Size(childWM).ConvertTo(aWM, childWM);
LogicalSize paddingSize =
offsets.ComputedLogicalPadding().Size(childWM).ConvertTo(aWM, childWM);
LogicalSize bpSize =
offsets.ComputedLogicalBorderPadding().Size(childWM).ConvertTo(aWM, childWM);
// Shrink-wrap aChildFrame by default, except if we're a stretched grid item.
auto flags = ComputeSizeFlags::eShrinkWrap;
auto parent = GetParent();
nsIAtom* parentFrameType = parent ? parent->GetType() : nullptr;
bool isGridItem = (parentFrameType == nsGkAtoms::gridContainerFrame &&
!HasAnyStateBits(NS_FRAME_OUT_OF_FLOW));
if (MOZ_UNLIKELY(isGridItem) &&
!StyleMargin()->HasInlineAxisAuto(aWM)) {
auto inlineAxisAlignment = aWM.IsOrthogonalTo(parent->GetWritingMode()) ?
StylePosition()->UsedAlignSelf(parent->StyleContext()) :
StylePosition()->UsedJustifySelf(parent->StyleContext());
if (inlineAxisAlignment == NS_STYLE_ALIGN_NORMAL ||
inlineAxisAlignment == NS_STYLE_ALIGN_STRETCH) {
flags = nsIFrame::ComputeSizeFlags::eDefault;
}
}
LogicalSize size =
aChildFrame->ComputeSize(aRenderingContext, aWM, aCBSize, aAvailableISize,
marginSize, bpSize - paddingSize, paddingSize,
flags);
if (aMarginResult) {
*aMarginResult = offsets.ComputedLogicalMargin().IStartEnd(aWM);
}
return size.ISize(aWM) + marginSize.ISize(aWM) + bpSize.ISize(aWM);
}
LogicalSize
nsTextControlFrame::ComputeAutoSize(nsRenderingContext *aRenderingContext,
WritingMode aWM,
const LogicalSize& aCBSize,
nscoord aAvailableISize,
const LogicalSize& aMargin,
const LogicalSize& aBorder,
const LogicalSize& aPadding,
bool aShrinkWrap)
{
float inflation = nsLayoutUtils::FontSizeInflationFor(this);
LogicalSize autoSize(aWM);
nsresult rv = CalcIntrinsicSize(aRenderingContext, aWM, autoSize, inflation);
if (NS_FAILED(rv)) {
// What now?
autoSize.SizeTo(aWM, 0, 0);
}
#ifdef DEBUG
// Note: Ancestor ComputeAutoSize only computes a width if we're auto-width
else {
const nsStyleCoord& inlineStyleCoord =
aWM.IsVertical() ? StylePosition()->mHeight : StylePosition()->mWidth;
if (inlineStyleCoord.GetUnit() == eStyleUnit_Auto) {
LogicalSize ancestorAutoSize =
nsContainerFrame::ComputeAutoSize(aRenderingContext, aWM,
aCBSize, aAvailableISize,
aMargin, aBorder,
aPadding, aShrinkWrap);
// Disabled when there's inflation; see comment in GetPrefSize.
MOZ_ASSERT(inflation != 1.0f ||
ancestorAutoSize.ISize(aWM) == autoSize.ISize(aWM),
"Incorrect size computed by ComputeAutoSize?");
}
}
#endif
return autoSize;
}
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);
}
bool
nsAbsoluteContainingBlock::FrameDependsOnContainer(nsIFrame* f,
bool aCBWidthChanged,
bool aCBHeightChanged)
{
const nsStylePosition* pos = f->StylePosition();
// See if f's position might have changed because it depends on a
// placeholder's position
// This can happen in the following cases:
// 1) Vertical positioning. "top" must be auto and "bottom" must be auto
// (otherwise the vertical position is completely determined by
// whichever of them is not auto and the height).
// 2) Horizontal positioning. "left" must be auto and "right" must be auto
// (otherwise the horizontal position is completely determined by
// whichever of them is not auto and the width).
// See nsHTMLReflowState::InitAbsoluteConstraints -- these are the
// only cases when we call CalculateHypotheticalBox().
if ((pos->mOffset.GetTopUnit() == eStyleUnit_Auto &&
pos->mOffset.GetBottomUnit() == eStyleUnit_Auto) ||
(pos->mOffset.GetLeftUnit() == eStyleUnit_Auto &&
pos->mOffset.GetRightUnit() == eStyleUnit_Auto)) {
return true;
}
if (!aCBWidthChanged && !aCBHeightChanged) {
// skip getting style data
return false;
}
const nsStylePadding* padding = f->StylePadding();
const nsStyleMargin* margin = f->StyleMargin();
WritingMode wm = f->GetWritingMode();
if (wm.IsVertical() ? aCBHeightChanged : aCBWidthChanged) {
// See if f's inline-size might have changed.
// If margin-inline-start/end, padding-inline-start/end,
// inline-size, min/max-inline-size are all lengths, 'none', or enumerated,
// then our frame isize does not depend on the parent isize.
// Note that borders never depend on the parent isize.
// XXX All of the enumerated values except -moz-available are ok too.
if (pos->ISizeDependsOnContainer(wm) ||
pos->MinISizeDependsOnContainer(wm) ||
pos->MaxISizeDependsOnContainer(wm) ||
!IsFixedPaddingSize(padding->mPadding.GetIStart(wm)) ||
!IsFixedPaddingSize(padding->mPadding.GetIEnd(wm))) {
return true;
}
// See if f's position might have changed. If we're RTL then the
// rules are slightly different. We'll assume percentage or auto
// margins will always induce a dependency on the size
if (!IsFixedMarginSize(margin->mMargin.GetIStart(wm)) ||
!IsFixedMarginSize(margin->mMargin.GetIEnd(wm))) {
return true;
}
if (!wm.IsBidiLTR()) {
// Note that even if 'istart' is a length, our position can
// still depend on the containing block isze, because if
// 'iend' is also a length we will discard 'istart' and be
// positioned relative to the containing block iend edge.
// 'istart' length and 'iend' auto is the only combination
// we can be sure of.
if (!IsFixedOffset(pos->mOffset.GetIStart(wm)) ||
pos->mOffset.GetIEndUnit(wm) != eStyleUnit_Auto) {
return true;
}
} else {
if (!IsFixedOffset(pos->mOffset.GetIStart(wm))) {
return true;
}
}
}
if (wm.IsVertical() ? aCBWidthChanged : aCBHeightChanged) {
// See if f's block-size might have changed.
// If margin-block-start/end, padding-block-start/end,
// min-block-size, and max-block-size are all lengths or 'none',
// and bsize is a length or bsize and bend are auto and bstart is not auto,
// then our frame bsize does not depend on the parent bsize.
// Note that borders never depend on the parent bsize.
if ((pos->BSizeDependsOnContainer(wm) &&
!(pos->BSize(wm).GetUnit() == eStyleUnit_Auto &&
pos->mOffset.GetBEndUnit(wm) == eStyleUnit_Auto &&
pos->mOffset.GetBStartUnit(wm) != eStyleUnit_Auto)) ||
pos->MinBSizeDependsOnContainer(wm) ||
pos->MaxBSizeDependsOnContainer(wm) ||
!IsFixedPaddingSize(padding->mPadding.GetBStart(wm)) ||
!IsFixedPaddingSize(padding->mPadding.GetBEnd(wm))) {
return true;
}
// See if f's position might have changed.
if (!IsFixedMarginSize(margin->mMargin.GetBStart(wm)) ||
!IsFixedMarginSize(margin->mMargin.GetBEnd(wm))) {
return true;
}
if (!IsFixedOffset(pos->mOffset.GetBStart(wm))) {
return true;
}
}
return false;
}
void
nsColumnSetFrame::PaintColumnRule(nsRenderingContext* aCtx,
const nsRect& aDirtyRect,
const nsPoint& aPt)
{
nsIFrame* child = mFrames.FirstChild();
if (!child)
return; // no columns
nsIFrame* nextSibling = child->GetNextSibling();
if (!nextSibling)
return; // 1 column only - this means no gap to draw on
WritingMode wm = GetWritingMode();
bool isVertical = wm.IsVertical();
bool isRTL = !wm.IsBidiLTR();
const nsStyleColumn* colStyle = StyleColumn();
uint8_t ruleStyle;
// Per spec, inset => ridge and outset => groove
if (colStyle->mColumnRuleStyle == NS_STYLE_BORDER_STYLE_INSET)
ruleStyle = NS_STYLE_BORDER_STYLE_RIDGE;
else if (colStyle->mColumnRuleStyle == NS_STYLE_BORDER_STYLE_OUTSET)
ruleStyle = NS_STYLE_BORDER_STYLE_GROOVE;
else
ruleStyle = colStyle->mColumnRuleStyle;
nsPresContext* presContext = PresContext();
nscoord ruleWidth = colStyle->GetComputedColumnRuleWidth();
if (!ruleWidth)
return;
nscolor ruleColor =
GetVisitedDependentColor(eCSSProperty_column_rule_color);
// In order to re-use a large amount of code, we treat the column rule as a border.
// We create a new border style object and fill in all the details of the column rule as
// the left border. PaintBorder() does all the rendering for us, so we not
// only save an enormous amount of code but we'll support all the line styles that
// we support on borders!
nsStyleBorder border(presContext);
Sides skipSides;
if (isVertical) {
border.SetBorderWidth(eSideTop, ruleWidth);
border.SetBorderStyle(eSideTop, ruleStyle);
border.mBorderTopColor = StyleComplexColor::FromColor(ruleColor);
skipSides |= mozilla::eSideBitsLeftRight;
skipSides |= mozilla::eSideBitsBottom;
} else {
border.SetBorderWidth(eSideLeft, ruleWidth);
border.SetBorderStyle(eSideLeft, ruleStyle);
border.mBorderLeftColor = StyleComplexColor::FromColor(ruleColor);
skipSides |= mozilla::eSideBitsTopBottom;
skipSides |= mozilla::eSideBitsRight;
}
// Get our content rect as an absolute coordinate, not relative to
// our parent (which is what the X and Y normally is)
nsRect contentRect = GetContentRect() - GetRect().TopLeft() + aPt;
nsSize ruleSize = isVertical ? nsSize(contentRect.width, ruleWidth)
: nsSize(ruleWidth, contentRect.height);
while (nextSibling) {
// The frame tree goes RTL in RTL.
// The |prevFrame| and |nextFrame| frames here are the visually preceding
// (left/above) and following (right/below) frames, not in logical writing-
// mode direction.
nsIFrame* prevFrame = isRTL ? nextSibling : child;
nsIFrame* nextFrame = isRTL ? child : nextSibling;
// Each child frame's position coordinates is actually relative to this
// nsColumnSetFrame.
// linePt will be at the top-left edge to paint the line.
nsPoint linePt;
if (isVertical) {
nscoord edgeOfPrev = prevFrame->GetRect().YMost() + aPt.y;
nscoord edgeOfNext = nextFrame->GetRect().Y() + aPt.y;
linePt = nsPoint(contentRect.x,
(edgeOfPrev + edgeOfNext - ruleSize.height) / 2);
} else {
nscoord edgeOfPrev = prevFrame->GetRect().XMost() + aPt.x;
nscoord edgeOfNext = nextFrame->GetRect().X() + aPt.x;
linePt = nsPoint((edgeOfPrev + edgeOfNext - ruleSize.width) / 2,
contentRect.y);
}
nsRect lineRect(linePt, ruleSize);
// Assert that we're not drawing a border-image here; if we were, we
// couldn't ignore the DrawResult that PaintBorderWithStyleBorder returns.
MOZ_ASSERT(border.mBorderImageSource.GetType() == eStyleImageType_Null);
Unused <<
nsCSSRendering::PaintBorderWithStyleBorder(presContext, *aCtx, this,
aDirtyRect, lineRect, border,
StyleContext(),
PaintBorderFlags::SYNC_DECODE_IMAGES,
skipSides);
child = nextSibling;
nextSibling = nextSibling->GetNextSibling();
}
}
void
nsProgressFrame::ReflowBarFrame(nsIFrame* aBarFrame,
nsPresContext* aPresContext,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus)
{
bool vertical = ResolvedOrientationIsVertical();
WritingMode wm = aBarFrame->GetWritingMode();
LogicalSize availSize = aReflowState.ComputedSize(wm);
availSize.BSize(wm) = NS_UNCONSTRAINEDSIZE;
nsHTMLReflowState reflowState(aPresContext, aReflowState,
aBarFrame, availSize);
nscoord size = vertical ? aReflowState.ComputedHeight()
: aReflowState.ComputedWidth();
nscoord xoffset = aReflowState.ComputedPhysicalBorderPadding().left;
nscoord yoffset = aReflowState.ComputedPhysicalBorderPadding().top;
double position = static_cast<HTMLProgressElement*>(mContent)->Position();
// Force the bar's size to match the current progress.
// When indeterminate, the progress' size will be 100%.
if (position >= 0.0) {
size *= position;
}
if (!vertical && (wm.IsVertical() ? wm.IsVerticalRL() : !wm.IsBidiLTR())) {
xoffset += aReflowState.ComputedWidth() - size;
}
// The bar size is fixed in these cases:
// - the progress position is determined: the bar size is fixed according
// to it's value.
// - the progress position is indeterminate and the bar appearance should be
// shown as native: the bar size is forced to 100%.
// Otherwise (when the progress is indeterminate and the bar appearance isn't
// native), the bar size isn't fixed and can be set by the author.
if (position != -1 || ShouldUseNativeStyle()) {
if (vertical) {
// We want the bar to begin at the bottom.
yoffset += aReflowState.ComputedHeight() - size;
size -= reflowState.ComputedPhysicalMargin().TopBottom() +
reflowState.ComputedPhysicalBorderPadding().TopBottom();
size = std::max(size, 0);
reflowState.SetComputedHeight(size);
} else {
size -= reflowState.ComputedPhysicalMargin().LeftRight() +
reflowState.ComputedPhysicalBorderPadding().LeftRight();
size = std::max(size, 0);
reflowState.SetComputedWidth(size);
}
} else if (vertical) {
// For vertical progress bars, we need to position the bar specificly when
// the width isn't constrained (position == -1 and !ShouldUseNativeStyle())
// because aReflowState.ComputedHeight() - size == 0.
yoffset += aReflowState.ComputedHeight() - reflowState.ComputedHeight();
}
xoffset += reflowState.ComputedPhysicalMargin().left;
yoffset += reflowState.ComputedPhysicalMargin().top;
nsHTMLReflowMetrics barDesiredSize(aReflowState);
ReflowChild(aBarFrame, aPresContext, barDesiredSize, reflowState, xoffset,
yoffset, 0, aStatus);
FinishReflowChild(aBarFrame, aPresContext, barDesiredSize, &reflowState,
xoffset, yoffset, 0);
}
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);
}
nsFlowAreaRect
nsFloatManager::GetFlowArea(WritingMode aWM, nscoord aBOffset,
BandInfoType aInfoType, nscoord aBSize,
LogicalRect aContentArea, SavedState* aState,
nscoord aContainerWidth) const
{
NS_ASSERTION(aBSize >= 0, "unexpected max block size");
NS_ASSERTION(aContentArea.ISize(aWM) >= 0,
"unexpected content area inline size");
LogicalPoint offset = mOffset.ConvertTo(aWM, mWritingMode, 0);
nscoord blockStart = aBOffset + offset.B(aWM);
if (blockStart < nscoord_MIN) {
NS_WARNING("bad value");
blockStart = nscoord_MIN;
}
// Determine the last float that we should consider.
uint32_t floatCount;
if (aState) {
// Use the provided state.
floatCount = aState->mFloatInfoCount;
NS_ABORT_IF_FALSE(floatCount <= mFloats.Length(), "bad state");
} else {
// Use our current state.
floatCount = mFloats.Length();
}
// If there are no floats at all, or we're below the last one, return
// quickly.
if (floatCount == 0 ||
(mFloats[floatCount-1].mLeftBEnd <= blockStart &&
mFloats[floatCount-1].mRightBEnd <= blockStart)) {
return nsFlowAreaRect(aWM, aContentArea.IStart(aWM), aBOffset,
aContentArea.ISize(aWM), aBSize, false);
}
nscoord blockEnd;
if (aBSize == nscoord_MAX) {
// This warning (and the two below) are possible to hit on pages
// with really large objects.
NS_WARN_IF_FALSE(aInfoType == BAND_FROM_POINT,
"bad height");
blockEnd = nscoord_MAX;
} else {
blockEnd = blockStart + aBSize;
if (blockEnd < blockStart || blockEnd > nscoord_MAX) {
NS_WARNING("bad value");
blockEnd = nscoord_MAX;
}
}
nscoord inlineStart = offset.I(aWM) + aContentArea.IStart(aWM);
nscoord inlineEnd = offset.I(aWM) + aContentArea.IEnd(aWM);
if (inlineEnd < inlineStart) {
NS_WARNING("bad value");
inlineEnd = inlineStart;
}
// Walk backwards through the floats until we either hit the front of
// the list or we're above |blockStart|.
bool haveFloats = false;
for (uint32_t i = floatCount; i > 0; --i) {
const FloatInfo &fi = mFloats[i-1];
if (fi.mLeftBEnd <= blockStart && fi.mRightBEnd <= blockStart) {
// There aren't any more floats that could intersect this band.
break;
}
if (fi.mRect.IsEmpty()) {
// For compatibility, ignore floats with empty rects, even though it
// disagrees with the spec. (We might want to fix this in the
// future, though.)
continue;
}
LogicalRect rect = fi.mRect.ConvertTo(aWM, fi.mWritingMode,
aContainerWidth);
nscoord floatBStart = rect.BStart(aWM);
nscoord floatBEnd = rect.BEnd(aWM);
if (blockStart < floatBStart && aInfoType == BAND_FROM_POINT) {
// This float is below our band. Shrink our band's height if needed.
if (floatBStart < blockEnd) {
blockEnd = floatBStart;
}
}
// If blockStart == blockEnd (which happens only with WIDTH_WITHIN_HEIGHT),
// we include floats that begin at our 0-height vertical area. We
// need to to this to satisfy the invariant that a
// WIDTH_WITHIN_HEIGHT call is at least as narrow on both sides as a
// BAND_WITHIN_POINT call beginning at its blockStart.
else if (blockStart < floatBEnd &&
(floatBStart < blockEnd ||
(floatBStart == blockEnd && blockStart == blockEnd))) {
// This float is in our band.
// Shrink our band's height if needed.
if (floatBEnd < blockEnd && aInfoType == BAND_FROM_POINT) {
blockEnd = floatBEnd;
}
// Shrink our band's width if needed.
if ((fi.mFrame->StyleDisplay()->mFloats == NS_STYLE_FLOAT_LEFT) ==
aWM.IsBidiLTR()) {
// A left float in an ltr block or a right float in an rtl block
nscoord inlineEndEdge = rect.IEnd(aWM);
if (inlineEndEdge > inlineStart) {
inlineStart = inlineEndEdge;
// Only set haveFloats to true if the float is inside our
// containing block. This matches the spec for what some
// callers want and disagrees for other callers, so we should
// probably provide better information at some point.
haveFloats = true;
}
} else {
// A left float in an rtl block or a right float in an ltr block
nscoord inlineStartEdge = rect.IStart(aWM);
if (inlineStartEdge < inlineEnd) {
inlineEnd = inlineStartEdge;
// See above.
haveFloats = true;
}
}
}
}
nscoord blockSize = (blockEnd == nscoord_MAX) ?
nscoord_MAX : (blockEnd - blockStart);
return nsFlowAreaRect(aWM,
inlineStart - offset.I(aWM), blockStart - offset.B(aWM),
inlineEnd - inlineStart, blockSize, haveFloats);
}
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);
// 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);
kid->DidReflow(aPresContext, nullptr, nsDidReflowStatus::FINISHED);
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);
} 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 (!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 (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);
}
void
nsFieldSetFrame::Reflow(nsPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus)
{
MarkInReflow();
DO_GLOBAL_REFLOW_COUNT("nsFieldSetFrame");
DISPLAY_REFLOW(aPresContext, this, aReflowState, aDesiredSize, aStatus);
NS_PRECONDITION(aReflowState.ComputedISize() != NS_INTRINSICSIZE,
"Should have a precomputed inline-size!");
// Initialize OUT parameter
aStatus = NS_FRAME_COMPLETE;
nsOverflowAreas ocBounds;
nsReflowStatus ocStatus = NS_FRAME_COMPLETE;
if (GetPrevInFlow()) {
ReflowOverflowContainerChildren(aPresContext, aReflowState, ocBounds, 0,
ocStatus);
}
//------------ Handle Incremental Reflow -----------------
bool reflowInner;
bool reflowLegend;
nsIFrame* legend = GetLegend();
nsIFrame* inner = GetInner();
if (aReflowState.ShouldReflowAllKids()) {
reflowInner = inner != nullptr;
reflowLegend = legend != nullptr;
} else {
reflowInner = inner && NS_SUBTREE_DIRTY(inner);
reflowLegend = legend && NS_SUBTREE_DIRTY(legend);
}
// We don't allow fieldsets to break vertically. If we did, we'd
// need logic here to push and pull overflow frames.
// Since we're not applying our padding in this frame, we need to add it here
// to compute the available width for our children.
WritingMode wm = GetWritingMode();
WritingMode innerWM = inner ? inner->GetWritingMode() : wm;
WritingMode legendWM = legend ? legend->GetWritingMode() : wm;
LogicalSize innerAvailSize = aReflowState.ComputedSizeWithPadding(innerWM);
LogicalSize legendAvailSize = aReflowState.ComputedSizeWithPadding(legendWM);
innerAvailSize.BSize(innerWM) = legendAvailSize.BSize(legendWM) =
NS_UNCONSTRAINEDSIZE;
NS_ASSERTION(!inner ||
nsLayoutUtils::IntrinsicForContainer(aReflowState.rendContext,
inner,
nsLayoutUtils::MIN_ISIZE) <=
innerAvailSize.ISize(innerWM),
"Bogus availSize.ISize; should be bigger");
NS_ASSERTION(!legend ||
nsLayoutUtils::IntrinsicForContainer(aReflowState.rendContext,
legend,
nsLayoutUtils::MIN_ISIZE) <=
legendAvailSize.ISize(legendWM),
"Bogus availSize.ISize; should be bigger");
// get our border and padding
LogicalMargin border = aReflowState.ComputedLogicalBorderPadding() -
aReflowState.ComputedLogicalPadding();
// Figure out how big the legend is if there is one.
// get the legend's margin
LogicalMargin legendMargin(wm);
// reflow the legend only if needed
Maybe<nsHTMLReflowState> legendReflowState;
if (legend) {
legendReflowState.emplace(aPresContext, aReflowState, legend,
legendAvailSize);
}
if (reflowLegend) {
nsHTMLReflowMetrics legendDesiredSize(aReflowState);
// We'll move the legend to its proper place later, so the position
// and containerSize passed here are unimportant.
const nsSize dummyContainerSize;
ReflowChild(legend, aPresContext, legendDesiredSize, *legendReflowState,
wm, LogicalPoint(wm), dummyContainerSize,
NS_FRAME_NO_MOVE_FRAME, aStatus);
#ifdef NOISY_REFLOW
printf(" returned (%d, %d)\n",
legendDesiredSize.Width(), legendDesiredSize.Height());
#endif
// figure out the legend's rectangle
legendMargin = legend->GetLogicalUsedMargin(wm);
mLegendRect =
LogicalRect(wm, 0, 0,
legendDesiredSize.ISize(wm) + legendMargin.IStartEnd(wm),
legendDesiredSize.BSize(wm) + legendMargin.BStartEnd(wm));
nscoord oldSpace = mLegendSpace;
mLegendSpace = 0;
if (mLegendRect.BSize(wm) > border.BStart(wm)) {
// center the border on the legend
mLegendSpace = mLegendRect.BSize(wm) - border.BStart(wm);
} else {
mLegendRect.BStart(wm) =
(border.BStart(wm) - mLegendRect.BSize(wm)) / 2;
}
// if the legend space changes then we need to reflow the
// content area as well.
if (mLegendSpace != oldSpace && inner) {
reflowInner = true;
}
FinishReflowChild(legend, aPresContext, legendDesiredSize,
legendReflowState.ptr(), wm, LogicalPoint(wm),
dummyContainerSize, NS_FRAME_NO_MOVE_FRAME);
} else if (!legend) {
mLegendRect.SetEmpty();
mLegendSpace = 0;
} else {
// mLegendSpace and mLegendRect haven't changed, but we need
// the used margin when placing the legend.
legendMargin = legend->GetLogicalUsedMargin(wm);
}
// This containerSize is incomplete as yet: it does not include the size
// of the |inner| frame itself.
nsSize containerSize = (LogicalSize(wm, 0, mLegendSpace) +
border.Size(wm)).GetPhysicalSize(wm);
// reflow the content frame only if needed
if (reflowInner) {
nsHTMLReflowState kidReflowState(aPresContext, aReflowState, inner,
innerAvailSize, nullptr,
nsHTMLReflowState::CALLER_WILL_INIT);
// Override computed padding, in case it's percentage padding
kidReflowState.Init(aPresContext, nullptr, nullptr,
&aReflowState.ComputedPhysicalPadding());
// Our child is "height:100%" but we actually want its height to be reduced
// by the amount of content-height the legend is eating up, unless our
// height is unconstrained (in which case the child's will be too).
if (aReflowState.ComputedBSize() != NS_UNCONSTRAINEDSIZE) {
kidReflowState.SetComputedBSize(
std::max(0, aReflowState.ComputedBSize() - mLegendSpace));
}
if (aReflowState.ComputedMinBSize() > 0) {
kidReflowState.ComputedMinBSize() =
std::max(0, aReflowState.ComputedMinBSize() - mLegendSpace);
}
if (aReflowState.ComputedMaxBSize() != NS_UNCONSTRAINEDSIZE) {
kidReflowState.ComputedMaxBSize() =
std::max(0, aReflowState.ComputedMaxBSize() - mLegendSpace);
}
nsHTMLReflowMetrics kidDesiredSize(kidReflowState,
aDesiredSize.mFlags);
// Reflow the frame
NS_ASSERTION(kidReflowState.ComputedPhysicalMargin() == nsMargin(0,0,0,0),
"Margins on anonymous fieldset child not supported!");
LogicalPoint pt(wm, border.IStart(wm), border.BStart(wm) + mLegendSpace);
// We don't know the correct containerSize until we have reflowed |inner|,
// so we use a dummy value for now; FinishReflowChild will fix the position
// if necessary.
const nsSize dummyContainerSize;
ReflowChild(inner, aPresContext, kidDesiredSize, kidReflowState,
wm, pt, dummyContainerSize, 0, aStatus);
// Update containerSize to account for size of the inner frame, so that
// FinishReflowChild can position it correctly.
containerSize += kidDesiredSize.PhysicalSize();
FinishReflowChild(inner, aPresContext, kidDesiredSize,
&kidReflowState, wm, pt, containerSize, 0);
NS_FRAME_TRACE_REFLOW_OUT("FieldSet::Reflow", aStatus);
} else if (inner) {
// |inner| didn't need to be reflowed but we do need to include its size
// in containerSize.
containerSize += inner->GetSize();
}
LogicalRect contentRect(wm);
if (inner) {
// We don't support margins on inner, so our content rect is just the
// inner's border-box. (We don't really care about container size at this
// point, as we'll figure out the actual positioning later.)
contentRect = inner->GetLogicalRect(wm, containerSize);
}
// Our content rect must fill up the available width
LogicalSize availSize = aReflowState.ComputedSizeWithPadding(wm);
if (availSize.ISize(wm) > contentRect.ISize(wm)) {
contentRect.ISize(wm) = innerAvailSize.ISize(wm);
}
if (legend) {
// The legend is positioned inline-wards within the inner's content rect
// (so that padding on the fieldset affects the legend position).
LogicalRect innerContentRect = contentRect;
innerContentRect.Deflate(wm, aReflowState.ComputedLogicalPadding());
// If the inner content rect is larger than the legend, we can align the
// legend.
if (innerContentRect.ISize(wm) > mLegendRect.ISize(wm)) {
int32_t align = static_cast<nsLegendFrame*>
(legend->GetContentInsertionFrame())->GetAlign();
if (!wm.IsBidiLTR()) {
if (align == NS_STYLE_TEXT_ALIGN_LEFT ||
align == NS_STYLE_TEXT_ALIGN_MOZ_LEFT) {
align = NS_STYLE_TEXT_ALIGN_END;
} else if (align == NS_STYLE_TEXT_ALIGN_RIGHT ||
align == NS_STYLE_TEXT_ALIGN_MOZ_RIGHT) {
align = NS_STYLE_TEXT_ALIGN_DEFAULT;
}
}
switch (align) {
case NS_STYLE_TEXT_ALIGN_END:
mLegendRect.IStart(wm) =
innerContentRect.IEnd(wm) - mLegendRect.ISize(wm);
break;
case NS_STYLE_TEXT_ALIGN_CENTER:
case NS_STYLE_TEXT_ALIGN_MOZ_CENTER:
// Note: rounding removed; there doesn't seem to be any need
mLegendRect.IStart(wm) = innerContentRect.IStart(wm) +
(innerContentRect.ISize(wm) - mLegendRect.ISize(wm)) / 2;
break;
default:
mLegendRect.IStart(wm) = innerContentRect.IStart(wm);
break;
}
} else {
// otherwise make place for the legend
mLegendRect.IStart(wm) = innerContentRect.IStart(wm);
innerContentRect.ISize(wm) = mLegendRect.ISize(wm);
contentRect.ISize(wm) = mLegendRect.ISize(wm) +
aReflowState.ComputedLogicalPadding().IStartEnd(wm);
}
// place the legend
LogicalRect actualLegendRect = mLegendRect;
actualLegendRect.Deflate(wm, legendMargin);
LogicalPoint actualLegendPos(actualLegendRect.Origin(wm));
// Note that legend's writing mode may be different from the fieldset's,
// so we need to convert offsets before applying them to it (bug 1134534).
LogicalMargin offsets =
legendReflowState->ComputedLogicalOffsets().
ConvertTo(wm, legendReflowState->GetWritingMode());
nsHTMLReflowState::ApplyRelativePositioning(legend, wm, offsets,
&actualLegendPos,
containerSize);
legend->SetPosition(wm, actualLegendPos, containerSize);
nsContainerFrame::PositionFrameView(legend);
nsContainerFrame::PositionChildViews(legend);
}
// Return our size and our result.
LogicalSize finalSize(wm, contentRect.ISize(wm) + border.IStartEnd(wm),
mLegendSpace + border.BStartEnd(wm) +
(inner ? inner->BSize(wm) : 0));
aDesiredSize.SetSize(wm, finalSize);
aDesiredSize.SetOverflowAreasToDesiredBounds();
if (legend) {
ConsiderChildOverflow(aDesiredSize.mOverflowAreas, legend);
}
if (inner) {
ConsiderChildOverflow(aDesiredSize.mOverflowAreas, inner);
}
// Merge overflow container bounds and status.
aDesiredSize.mOverflowAreas.UnionWith(ocBounds);
NS_MergeReflowStatusInto(&aStatus, ocStatus);
FinishReflowWithAbsoluteFrames(aPresContext, aDesiredSize, aReflowState, aStatus);
InvalidateFrame();
NS_FRAME_SET_TRUNCATION(aStatus, aReflowState, aDesiredSize);
}
void
BRFrame::Reflow(nsPresContext* aPresContext,
ReflowOutput& aMetrics,
const ReflowInput& aReflowInput,
nsReflowStatus& aStatus)
{
MarkInReflow();
DO_GLOBAL_REFLOW_COUNT("BRFrame");
DISPLAY_REFLOW(aPresContext, this, aReflowInput, aMetrics, aStatus);
WritingMode wm = aReflowInput.GetWritingMode();
LogicalSize finalSize(wm);
finalSize.BSize(wm) = 0; // BR frames with block size 0 are ignored in quirks
// mode by nsLineLayout::VerticalAlignFrames .
// However, it's not always 0. See below.
finalSize.ISize(wm) = 0;
aMetrics.SetBlockStartAscent(0);
// Only when the BR is operating in a line-layout situation will it
// behave like a BR. Additionally, we suppress breaks from BR inside
// of ruby frames. To determine if we're inside ruby, we have to rely
// on the *parent's* ShouldSuppressLineBreak() method, instead of our
// own, because we may have custom "display" value that makes our
// ShouldSuppressLineBreak() return false.
nsLineLayout* ll = aReflowInput.mLineLayout;
if (ll && !GetParent()->StyleContext()->ShouldSuppressLineBreak()) {
// Note that the compatibility mode check excludes AlmostStandards
// mode, since this is the inline box model. See bug 161691.
if ( ll->LineIsEmpty() ||
aPresContext->CompatibilityMode() == eCompatibility_FullStandards ) {
// The line is logically empty; any whitespace is trimmed away.
//
// If this frame is going to terminate the line we know
// that nothing else will go on the line. Therefore, in this
// case, we provide some height for the BR frame so that it
// creates some vertical whitespace. It's necessary to use the
// line-height rather than the font size because the
// quirks-mode fix that doesn't apply the block's min
// line-height makes this necessary to make BR cause a line
// of the full line-height
// We also do this in strict mode because BR should act like a
// normal inline frame. That line-height is used is important
// here for cases where the line-height is less than 1.
RefPtr<nsFontMetrics> fm =
nsLayoutUtils::GetInflatedFontMetricsForFrame(this);
if (fm) {
nscoord logicalHeight = aReflowInput.CalcLineHeight();
finalSize.BSize(wm) = logicalHeight;
aMetrics.SetBlockStartAscent(nsLayoutUtils::GetCenteredFontBaseline(
fm, logicalHeight, wm.IsLineInverted()));
}
else {
aMetrics.SetBlockStartAscent(aMetrics.BSize(wm) = 0);
}
// XXX temporary until I figure out a better solution; see the
// code in nsLineLayout::VerticalAlignFrames that zaps minY/maxY
// if the width is zero.
// XXX This also fixes bug 10036!
// Warning: nsTextControlFrame::CalculateSizeStandard depends on
// the following line, see bug 228752.
// The code below in AddInlinePrefISize also adds 1 appunit to width
finalSize.ISize(wm) = 1;
}
// Return our reflow status
uint32_t breakType = aReflowInput.mStyleDisplay->PhysicalBreakType(wm);
if (NS_STYLE_CLEAR_NONE == breakType) {
breakType = NS_STYLE_CLEAR_LINE;
}
aStatus = NS_INLINE_BREAK | NS_INLINE_BREAK_AFTER |
NS_INLINE_MAKE_BREAK_TYPE(breakType);
ll->SetLineEndsInBR(true);
}
else {
aStatus = NS_FRAME_COMPLETE;
}
aMetrics.SetSize(wm, finalSize);
aMetrics.SetOverflowAreasToDesiredBounds();
mAscent = aMetrics.BlockStartAscent();
NS_FRAME_SET_TRUNCATION(aStatus, aReflowInput, aMetrics);
}
DrawResult
nsFieldSetFrame::PaintBorderBackground(
nsDisplayListBuilder* aBuilder,
nsRenderingContext& aRenderingContext,
nsPoint aPt,
const nsRect& aDirtyRect)
{
// if the border is smaller than the legend. Move the border down
// to be centered on the legend.
// FIXME: This means border-radius clamping is incorrect; we should
// override nsIFrame::GetBorderRadii.
WritingMode wm = GetWritingMode();
nsRect rect = VisualBorderRectRelativeToSelf();
nscoord off = wm.IsVertical() ? rect.x : rect.y;
rect += aPt;
nsPresContext* presContext = PresContext();
uint32_t bgFlags = aBuilder->GetBackgroundPaintFlags();
PaintBorderFlags borderFlags = aBuilder->ShouldSyncDecodeImages()
? PaintBorderFlags::SYNC_DECODE_IMAGES
: PaintBorderFlags();
DrawResult result =
nsCSSRendering::PaintBackground(presContext, aRenderingContext, this,
aDirtyRect, rect, bgFlags);
nsCSSRendering::PaintBoxShadowInner(presContext, aRenderingContext,
this, rect, aDirtyRect);
if (nsIFrame* legend = GetLegend()) {
css::Side legendSide = wm.PhysicalSide(eLogicalSideBStart);
nscoord legendBorderWidth =
StyleBorder()->GetComputedBorderWidth(legendSide);
// Use the rect of the legend frame, not mLegendRect, so we draw our
// border under the legend's inline-start and -end margins.
LogicalRect legendRect(wm, legend->GetRect() + aPt, rect.Size());
// Compute clipRect using logical coordinates, so that the legend space
// will be clipped out of the appropriate physical side depending on mode.
LogicalRect clipRect = LogicalRect(wm, rect, rect.Size());
DrawTarget* drawTarget = aRenderingContext.GetDrawTarget();
gfxContext* gfx = aRenderingContext.ThebesContext();
int32_t appUnitsPerDevPixel = presContext->AppUnitsPerDevPixel();
// draw inline-start portion of the block-start side of the border
clipRect.ISize(wm) = legendRect.IStart(wm) - clipRect.IStart(wm);
clipRect.BSize(wm) = legendBorderWidth;
gfx->Save();
gfx->Clip(NSRectToSnappedRect(clipRect.GetPhysicalRect(wm, rect.Size()),
appUnitsPerDevPixel, *drawTarget));
result &=
nsCSSRendering::PaintBorder(presContext, aRenderingContext, this,
aDirtyRect, rect, mStyleContext, borderFlags);
gfx->Restore();
// draw inline-end portion of the block-start side of the border
clipRect = LogicalRect(wm, rect, rect.Size());
clipRect.ISize(wm) = clipRect.IEnd(wm) - legendRect.IEnd(wm);
clipRect.IStart(wm) = legendRect.IEnd(wm);
clipRect.BSize(wm) = legendBorderWidth;
gfx->Save();
gfx->Clip(NSRectToSnappedRect(clipRect.GetPhysicalRect(wm, rect.Size()),
appUnitsPerDevPixel, *drawTarget));
result &=
nsCSSRendering::PaintBorder(presContext, aRenderingContext, this,
aDirtyRect, rect, mStyleContext, borderFlags);
gfx->Restore();
// draw remainder of the border (omitting the block-start side)
clipRect = LogicalRect(wm, rect, rect.Size());
clipRect.BStart(wm) += legendBorderWidth;
clipRect.BSize(wm) = BSize(wm) - (off + legendBorderWidth);
gfx->Save();
gfx->Clip(NSRectToSnappedRect(clipRect.GetPhysicalRect(wm, rect.Size()),
appUnitsPerDevPixel, *drawTarget));
result &=
nsCSSRendering::PaintBorder(presContext, aRenderingContext, this,
aDirtyRect, rect, mStyleContext, borderFlags);
gfx->Restore();
} else {
result &=
nsCSSRendering::PaintBorder(presContext, aRenderingContext, this,
aDirtyRect, nsRect(aPt, mRect.Size()),
mStyleContext, borderFlags);
}
return result;
}
nsFlowAreaRect
nsFloatManager::GetFlowArea(WritingMode aWM, nscoord aBCoord, nscoord aBSize,
BandInfoType aBandInfoType, ShapeType aShapeType,
LogicalRect aContentArea, SavedState* aState,
const nsSize& aContainerSize) const
{
CHECK_BLOCK_AND_LINE_DIR(aWM);
NS_ASSERTION(aBSize >= 0, "unexpected max block size");
NS_ASSERTION(aContentArea.ISize(aWM) >= 0,
"unexpected content area inline size");
nscoord blockStart = aBCoord + mBlockStart;
if (blockStart < nscoord_MIN) {
NS_WARNING("bad value");
blockStart = nscoord_MIN;
}
// Determine the last float that we should consider.
uint32_t floatCount;
if (aState) {
// Use the provided state.
floatCount = aState->mFloatInfoCount;
MOZ_ASSERT(floatCount <= mFloats.Length(), "bad state");
} else {
// Use our current state.
floatCount = mFloats.Length();
}
// If there are no floats at all, or we're below the last one, return
// quickly.
if (floatCount == 0 ||
(mFloats[floatCount-1].mLeftBEnd <= blockStart &&
mFloats[floatCount-1].mRightBEnd <= blockStart)) {
return nsFlowAreaRect(aWM, aContentArea.IStart(aWM), aBCoord,
aContentArea.ISize(aWM), aBSize, false);
}
nscoord blockEnd;
if (aBSize == nscoord_MAX) {
// This warning (and the two below) are possible to hit on pages
// with really large objects.
NS_WARNING_ASSERTION(aBandInfoType == BandInfoType::BandFromPoint, "bad height");
blockEnd = nscoord_MAX;
} else {
blockEnd = blockStart + aBSize;
if (blockEnd < blockStart || blockEnd > nscoord_MAX) {
NS_WARNING("bad value");
blockEnd = nscoord_MAX;
}
}
nscoord lineLeft = mLineLeft + aContentArea.LineLeft(aWM, aContainerSize);
nscoord lineRight = mLineLeft + aContentArea.LineRight(aWM, aContainerSize);
if (lineRight < lineLeft) {
NS_WARNING("bad value");
lineRight = lineLeft;
}
// Walk backwards through the floats until we either hit the front of
// the list or we're above |blockStart|.
bool haveFloats = false;
for (uint32_t i = floatCount; i > 0; --i) {
const FloatInfo &fi = mFloats[i-1];
if (fi.mLeftBEnd <= blockStart && fi.mRightBEnd <= blockStart) {
// There aren't any more floats that could intersect this band.
break;
}
if (fi.IsEmpty()) {
// For compatibility, ignore floats with empty rects, even though it
// disagrees with the spec. (We might want to fix this in the
// future, though.)
continue;
}
nscoord floatBStart = fi.BStart(aShapeType);
nscoord floatBEnd = fi.BEnd(aShapeType);
if (blockStart < floatBStart && aBandInfoType == BandInfoType::BandFromPoint) {
// This float is below our band. Shrink our band's height if needed.
if (floatBStart < blockEnd) {
blockEnd = floatBStart;
}
}
// If blockStart == blockEnd (which happens only with WidthWithinHeight),
// we include floats that begin at our 0-height vertical area. We
// need to do this to satisfy the invariant that a
// WidthWithinHeight call is at least as narrow on both sides as a
// BandFromPoint call beginning at its blockStart.
else if (blockStart < floatBEnd &&
(floatBStart < blockEnd ||
(floatBStart == blockEnd && blockStart == blockEnd))) {
// This float is in our band.
// Shrink our band's width if needed.
StyleFloat floatStyle = fi.mFrame->StyleDisplay()->PhysicalFloats(aWM);
// When aBandInfoType is BandFromPoint, we're only intended to
// consider a point along the y axis rather than a band.
const nscoord bandBlockEnd =
aBandInfoType == BandInfoType::BandFromPoint ? blockStart : blockEnd;
if (floatStyle == StyleFloat::Left) {
// A left float
nscoord lineRightEdge =
fi.LineRight(aWM, aShapeType, blockStart, bandBlockEnd);
if (lineRightEdge > lineLeft) {
lineLeft = lineRightEdge;
// Only set haveFloats to true if the float is inside our
// containing block. This matches the spec for what some
// callers want and disagrees for other callers, so we should
// probably provide better information at some point.
haveFloats = true;
}
} else {
// A right float
nscoord lineLeftEdge =
fi.LineLeft(aWM, aShapeType, blockStart, bandBlockEnd);
if (lineLeftEdge < lineRight) {
lineRight = lineLeftEdge;
// See above.
haveFloats = true;
}
}
// Shrink our band's height if needed.
if (floatBEnd < blockEnd && aBandInfoType == BandInfoType::BandFromPoint) {
blockEnd = floatBEnd;
}
}
}
nscoord blockSize = (blockEnd == nscoord_MAX) ?
nscoord_MAX : (blockEnd - blockStart);
// convert back from LineLeft/Right to IStart
nscoord inlineStart = aWM.IsBidiLTR()
? lineLeft - mLineLeft
: mLineLeft - lineRight +
LogicalSize(aWM, aContainerSize).ISize(aWM);
return nsFlowAreaRect(aWM, inlineStart, blockStart - mBlockStart,
lineRight - lineLeft, blockSize, haveFloats);
}
/* virtual */ bool
nsInlineFrame::IsSelfEmpty()
{
#if 0
// I used to think inline frames worked this way, but it seems they
// don't. At least not in our codebase.
if (GetPresContext()->CompatibilityMode() == eCompatibility_FullStandards) {
return false;
}
#endif
const nsStyleMargin* margin = StyleMargin();
const nsStyleBorder* border = StyleBorder();
const nsStylePadding* padding = StylePadding();
// Block-start and -end ignored, since they shouldn't affect things, but this
// doesn't really match with nsLineLayout.cpp's setting of
// ZeroEffectiveSpanBox, anymore, so what should this really be?
WritingMode wm = GetWritingMode();
bool haveStart, haveEnd;
// Initially set up haveStart and haveEnd in terms of visual (LTR/TTB)
// coordinates; we'll exchange them later if bidi-RTL is in effect to
// get logical start and end flags.
if (wm.IsVertical()) {
haveStart =
border->GetComputedBorderWidth(eSideTop) != 0 ||
!nsLayoutUtils::IsPaddingZero(padding->mPadding.GetTop()) ||
!IsMarginZero(margin->mMargin.GetTop());
haveEnd =
border->GetComputedBorderWidth(eSideBottom) != 0 ||
!nsLayoutUtils::IsPaddingZero(padding->mPadding.GetBottom()) ||
!IsMarginZero(margin->mMargin.GetBottom());
} else {
haveStart =
border->GetComputedBorderWidth(eSideLeft) != 0 ||
!nsLayoutUtils::IsPaddingZero(padding->mPadding.GetLeft()) ||
!IsMarginZero(margin->mMargin.GetLeft());
haveEnd =
border->GetComputedBorderWidth(eSideRight) != 0 ||
!nsLayoutUtils::IsPaddingZero(padding->mPadding.GetRight()) ||
!IsMarginZero(margin->mMargin.GetRight());
}
if (haveStart || haveEnd) {
// We skip this block and return false for box-decoration-break:clone since
// in that case all the continuations will have the border/padding/margin.
if ((GetStateBits() & NS_FRAME_PART_OF_IBSPLIT) &&
StyleBorder()->mBoxDecorationBreak == StyleBoxDecorationBreak::Slice) {
// When direction=rtl, we need to consider logical rather than visual
// start and end, so swap the flags.
if (!wm.IsBidiLTR()) {
Swap(haveStart, haveEnd);
}
// For ib-split frames, ignore things we know we'll skip in GetSkipSides.
// XXXbz should we be doing this for non-ib-split frames too, in a more
// general way?
// Get the first continuation eagerly, as a performance optimization, to
// avoid having to get it twice..
nsIFrame* firstCont = FirstContinuation();
return
(!haveStart || firstCont->FrameIsNonFirstInIBSplit()) &&
(!haveEnd || firstCont->FrameIsNonLastInIBSplit());
}
return false;
}
return true;
}
/* static */ nsRect
nsCaret::GetGeometryForFrame(nsIFrame* aFrame,
int32_t aFrameOffset,
nscoord* aBidiIndicatorSize)
{
nsPoint framePos(0, 0);
nsRect rect;
nsresult rv = aFrame->GetPointFromOffset(aFrameOffset, &framePos);
if (NS_FAILED(rv)) {
if (aBidiIndicatorSize) {
*aBidiIndicatorSize = 0;
}
return rect;
}
nsIFrame* frame = aFrame->GetContentInsertionFrame();
if (!frame) {
frame = aFrame;
}
NS_ASSERTION(!(frame->GetStateBits() & NS_FRAME_IN_REFLOW),
"We should not be in the middle of reflow");
nscoord baseline = frame->GetCaretBaseline();
nscoord ascent = 0, descent = 0;
RefPtr<nsFontMetrics> fm;
nsLayoutUtils::GetFontMetricsForFrame(aFrame, getter_AddRefs(fm),
nsLayoutUtils::FontSizeInflationFor(aFrame));
NS_ASSERTION(fm, "We should be able to get the font metrics");
if (fm) {
ascent = fm->MaxAscent();
descent = fm->MaxDescent();
}
nscoord height = ascent + descent;
WritingMode wm = aFrame->GetWritingMode();
bool vertical = wm.IsVertical();
if (vertical) {
if (wm.IsLineInverted()) {
framePos.x = baseline - descent;
} else {
framePos.x = baseline - ascent;
}
} else {
framePos.y = baseline - ascent;
}
Metrics caretMetrics = ComputeMetrics(aFrame, aFrameOffset, height);
rect = nsRect(framePos, vertical ? nsSize(height, caretMetrics.mCaretWidth) :
nsSize(caretMetrics.mCaretWidth, height));
// Clamp the inline-position to be within our scroll frame. If we don't, then
// it clips us, and we don't appear at all. See bug 335560.
nsIFrame *scrollFrame =
nsLayoutUtils::GetClosestFrameOfType(aFrame, nsGkAtoms::scrollFrame);
if (scrollFrame) {
// First, use the scrollFrame to get at the scrollable view that we're in.
nsIScrollableFrame *sf = do_QueryFrame(scrollFrame);
nsIFrame *scrolled = sf->GetScrolledFrame();
nsRect caretInScroll = rect + aFrame->GetOffsetTo(scrolled);
// Now see if the caret extends beyond the view's bounds. If it does,
// then snap it back, put it as close to the edge as it can.
if (vertical) {
nscoord overflow = caretInScroll.YMost() -
scrolled->GetVisualOverflowRectRelativeToSelf().height;
if (overflow > 0) {
rect.y -= overflow;
}
} else {
nscoord overflow = caretInScroll.XMost() -
scrolled->GetVisualOverflowRectRelativeToSelf().width;
if (overflow > 0) {
rect.x -= overflow;
}
}
}
if (aBidiIndicatorSize) {
*aBidiIndicatorSize = caretMetrics.mBidiIndicatorSize;
}
return rect;
}
bool
nsBlockReflowState::FlowAndPlaceFloat(nsIFrame* aFloat)
{
WritingMode wm = mReflowState.GetWritingMode();
// Save away the Y coordinate before placing the float. We will
// restore mBCoord at the end after placing the float. This is
// necessary because any adjustments to mBCoord during the float
// placement are for the float only, not for any non-floating
// content.
AutoRestore<nscoord> restoreBCoord(mBCoord);
// FIXME: Should give AutoRestore a getter for the value to avoid this.
const nscoord saveBCoord = mBCoord;
// Grab the float's display information
const nsStyleDisplay* floatDisplay = aFloat->StyleDisplay();
// The float's old region, so we can propagate damage.
LogicalRect oldRegion = nsFloatManager::GetRegionFor(wm, aFloat,
ContainerSize());
// Enforce CSS2 9.5.1 rule [2], i.e., make sure that a float isn't
// ``above'' another float that preceded it in the flow.
mBCoord = std::max(mFloatManager->GetLowestFloatTop(), mBCoord);
// See if the float should clear any preceding floats...
// XXX We need to mark this float somehow so that it gets reflowed
// when floats are inserted before it.
if (NS_STYLE_CLEAR_NONE != floatDisplay->mBreakType) {
// XXXldb Does this handle vertical margins correctly?
mBCoord = ClearFloats(mBCoord, floatDisplay->PhysicalBreakType(wm));
}
// Get the band of available space
nsFlowAreaRect floatAvailableSpace = GetFloatAvailableSpace(mBCoord);
LogicalRect adjustedAvailableSpace =
mBlock->AdjustFloatAvailableSpace(*this, floatAvailableSpace.mRect, aFloat);
NS_ASSERTION(aFloat->GetParent() == mBlock,
"Float frame has wrong parent");
nsCSSOffsetState offsets(aFloat, mReflowState.rendContext,
wm, mReflowState.ComputedISize());
nscoord floatMarginISize = FloatMarginISize(mReflowState,
adjustedAvailableSpace.ISize(wm),
aFloat, offsets);
LogicalMargin floatMargin(wm); // computed margin
LogicalMargin floatOffsets(wm);
nsReflowStatus reflowStatus;
// If it's a floating first-letter, we need to reflow it before we
// know how wide it is (since we don't compute which letters are part
// of the first letter until reflow!).
// We also need to do this early reflow if FloatMarginISize returned
// an unconstrained inline-size, which can occur if the float had an
// orthogonal writing mode and 'auto' block-size (in its mode).
bool earlyFloatReflow =
aFloat->GetType() == nsGkAtoms::letterFrame ||
floatMarginISize == NS_UNCONSTRAINEDSIZE;
if (earlyFloatReflow) {
mBlock->ReflowFloat(*this, adjustedAvailableSpace, aFloat, floatMargin,
floatOffsets, false, reflowStatus);
floatMarginISize = aFloat->ISize(wm) + floatMargin.IStartEnd(wm);
NS_ASSERTION(NS_FRAME_IS_COMPLETE(reflowStatus),
"letter frames and orthogonal floats with auto block-size "
"shouldn't break, and if they do now, then they're breaking "
"at the wrong point");
}
// Find a place to place the float. The CSS2 spec doesn't want
// floats overlapping each other or sticking out of the containing
// block if possible (CSS2 spec section 9.5.1, see the rule list).
uint8_t floatStyle = floatDisplay->PhysicalFloats(wm);
NS_ASSERTION((NS_STYLE_FLOAT_LEFT == floatStyle) ||
(NS_STYLE_FLOAT_RIGHT == floatStyle),
"invalid float type");
// Can the float fit here?
bool keepFloatOnSameLine = false;
// Are we required to place at least part of the float because we're
// at the top of the page (to avoid an infinite loop of pushing and
// breaking).
bool mustPlaceFloat =
mReflowState.mFlags.mIsTopOfPage && IsAdjacentWithTop();
for (;;) {
if (mReflowState.AvailableHeight() != NS_UNCONSTRAINEDSIZE &&
floatAvailableSpace.mRect.BSize(wm) <= 0 &&
!mustPlaceFloat) {
// No space, nowhere to put anything.
PushFloatPastBreak(aFloat);
return false;
}
if (CanPlaceFloat(floatMarginISize, floatAvailableSpace)) {
// We found an appropriate place.
break;
}
// Nope. try to advance to the next band.
if (NS_STYLE_DISPLAY_TABLE != floatDisplay->mDisplay ||
eCompatibility_NavQuirks != mPresContext->CompatibilityMode() ) {
mBCoord += floatAvailableSpace.mRect.BSize(wm);
if (adjustedAvailableSpace.BSize(wm) != NS_UNCONSTRAINEDSIZE) {
adjustedAvailableSpace.BSize(wm) -= floatAvailableSpace.mRect.BSize(wm);
}
floatAvailableSpace = GetFloatAvailableSpace(mBCoord);
} else {
// This quirk matches the one in nsBlockFrame::AdjustFloatAvailableSpace
// IE handles float tables in a very special way
// see if the previous float is also a table and has "align"
nsFloatCache* fc = mCurrentLineFloats.Head();
nsIFrame* prevFrame = nullptr;
while (fc) {
if (fc->mFloat == aFloat) {
break;
}
prevFrame = fc->mFloat;
fc = fc->Next();
}
if(prevFrame) {
//get the frame type
if (nsGkAtoms::tableOuterFrame == prevFrame->GetType()) {
//see if it has "align="
// IE makes a difference between align and he float property
nsIContent* content = prevFrame->GetContent();
if (content) {
// we're interested only if previous frame is align=left
// IE messes things up when "right" (overlapping frames)
if (content->AttrValueIs(kNameSpaceID_None, nsGkAtoms::align,
NS_LITERAL_STRING("left"), eIgnoreCase)) {
keepFloatOnSameLine = true;
// don't advance to next line (IE quirkie behaviour)
// it breaks rule CSS2/9.5.1/1, but what the hell
// since we cannot evangelize the world
break;
}
}
}
}
// the table does not fit anymore in this line so advance to next band
mBCoord += floatAvailableSpace.mRect.BSize(wm);
// To match nsBlockFrame::AdjustFloatAvailableSpace, we have to
// get a new width for the new band.
floatAvailableSpace = GetFloatAvailableSpace(mBCoord);
adjustedAvailableSpace = mBlock->AdjustFloatAvailableSpace(*this,
floatAvailableSpace.mRect, aFloat);
floatMarginISize = FloatMarginISize(mReflowState,
adjustedAvailableSpace.ISize(wm),
aFloat, offsets);
}
mustPlaceFloat = false;
}
// If the float is continued, it will get the same absolute x value as its prev-in-flow
// We don't worry about the geometry of the prev in flow, let the continuation
// place and size itself as required.
// Assign inline and block dir coordinates to the float. We don't use
// LineLeft() and LineRight() here, because we would only have to
// convert the result back into this block's writing mode.
LogicalPoint floatPos(wm);
bool leftFloat = NS_STYLE_FLOAT_LEFT == floatStyle;
if (leftFloat == wm.IsBidiLTR()) {
floatPos.I(wm) = floatAvailableSpace.mRect.IStart(wm);
}
else {
if (!keepFloatOnSameLine) {
floatPos.I(wm) = floatAvailableSpace.mRect.IEnd(wm) - floatMarginISize;
}
else {
// this is the IE quirk (see few lines above)
// the table is kept in the same line: don't let it overlap the
// previous float
floatPos.I(wm) = floatAvailableSpace.mRect.IStart(wm);
}
}
// CSS2 spec, 9.5.1 rule [4]: "A floating box's outer top may not
// be higher than the top of its containing block." (Since the
// containing block is the content edge of the block box, this
// means the margin edge of the float can't be higher than the
// content edge of the block that contains it.)
floatPos.B(wm) = std::max(mBCoord, ContentBStart());
// Reflow the float after computing its vertical position so it knows
// where to break.
if (!earlyFloatReflow) {
bool pushedDown = mBCoord != saveBCoord;
mBlock->ReflowFloat(*this, adjustedAvailableSpace, aFloat, floatMargin,
floatOffsets, pushedDown, reflowStatus);
}
if (aFloat->GetPrevInFlow())
floatMargin.BStart(wm) = 0;
if (NS_FRAME_IS_NOT_COMPLETE(reflowStatus))
floatMargin.BEnd(wm) = 0;
// In the case that we're in columns and not splitting floats, we need
// to check here that the float's height fit, and if it didn't, bail.
// (controlled by the pref "layout.float-fragments-inside-column.enabled")
//
// Likewise, if none of the float fit, and it needs to be pushed in
// its entirety to the next page (NS_FRAME_IS_TRUNCATED or
// NS_INLINE_IS_BREAK_BEFORE), we need to do the same.
if ((ContentBSize() != NS_UNCONSTRAINEDSIZE &&
!GetFlag(BRS_FLOAT_FRAGMENTS_INSIDE_COLUMN_ENABLED) &&
adjustedAvailableSpace.BSize(wm) == NS_UNCONSTRAINEDSIZE &&
!mustPlaceFloat &&
aFloat->BSize(wm) + floatMargin.BStartEnd(wm) >
ContentBEnd() - floatPos.B(wm)) ||
NS_FRAME_IS_TRUNCATED(reflowStatus) ||
NS_INLINE_IS_BREAK_BEFORE(reflowStatus)) {
PushFloatPastBreak(aFloat);
return false;
}
// We can't use aFloat->ShouldAvoidBreakInside(mReflowState) here since
// its mIsTopOfPage may be true even though the float isn't at the
// top when floatPos.B(wm) > 0.
if (ContentBSize() != NS_UNCONSTRAINEDSIZE &&
!mustPlaceFloat &&
(!mReflowState.mFlags.mIsTopOfPage || floatPos.B(wm) > 0) &&
NS_STYLE_PAGE_BREAK_AVOID == aFloat->StyleDisplay()->mBreakInside &&
(!NS_FRAME_IS_FULLY_COMPLETE(reflowStatus) ||
aFloat->BSize(wm) + floatMargin.BStartEnd(wm) >
ContentBEnd() - floatPos.B(wm)) &&
!aFloat->GetPrevInFlow()) {
PushFloatPastBreak(aFloat);
return false;
}
// Calculate the actual origin of the float frame's border rect
// relative to the parent block; the margin must be added in
// to get the border rect
LogicalPoint origin(wm, floatMargin.IStart(wm) + floatPos.I(wm),
floatMargin.BStart(wm) + floatPos.B(wm));
// If float is relatively positioned, factor that in as well
nsHTMLReflowState::ApplyRelativePositioning(aFloat, wm, floatOffsets,
&origin, ContainerSize());
// Position the float and make sure and views are properly
// positioned. We need to explicitly position its child views as
// well, since we're moving the float after flowing it.
bool moved = aFloat->GetLogicalPosition(wm, ContainerSize()) != origin;
if (moved) {
aFloat->SetPosition(wm, origin, ContainerSize());
nsContainerFrame::PositionFrameView(aFloat);
nsContainerFrame::PositionChildViews(aFloat);
}
// Update the float combined area state
// XXX Floats should really just get invalidated here if necessary
mFloatOverflowAreas.UnionWith(aFloat->GetOverflowAreas() +
aFloat->GetPosition());
// Place the float in the float manager
// calculate region
LogicalRect region =
nsFloatManager::CalculateRegionFor(wm, aFloat, floatMargin,
ContainerSize());
// if the float split, then take up all of the vertical height
if (NS_FRAME_IS_NOT_COMPLETE(reflowStatus) &&
(NS_UNCONSTRAINEDSIZE != ContentBSize())) {
region.BSize(wm) = std::max(region.BSize(wm),
ContentBSize() - floatPos.B(wm));
}
DebugOnly<nsresult> rv = mFloatManager->AddFloat(aFloat, region, wm,
ContainerSize());
MOZ_ASSERT(NS_SUCCEEDED(rv), "bad float placement");
// store region
nsFloatManager::StoreRegionFor(wm, aFloat, region, ContainerSize());
// If the float's dimensions have changed, note the damage in the
// float manager.
if (!region.IsEqualEdges(oldRegion)) {
// XXXwaterson conservative: we could probably get away with noting
// less damage; e.g., if only height has changed, then only note the
// area into which the float has grown or from which the float has
// shrunk.
nscoord blockStart = std::min(region.BStart(wm), oldRegion.BStart(wm));
nscoord blockEnd = std::max(region.BEnd(wm), oldRegion.BEnd(wm));
mFloatManager->IncludeInDamage(wm, blockStart, blockEnd);
}
if (!NS_FRAME_IS_FULLY_COMPLETE(reflowStatus)) {
mBlock->SplitFloat(*this, aFloat, reflowStatus);
} else {
MOZ_ASSERT(!aFloat->GetNextInFlow());
}
#ifdef NOISY_FLOATMANAGER
nscoord tI, tB;
mFloatManager->GetTranslation(tI, tB);
nsIFrame::ListTag(stdout, mBlock);
printf(": FlowAndPlaceFloat: AddFloat: tIB=%d,%d (%d,%d) {%d,%d,%d,%d}\n",
tI, tB, mFloatManagerI, mFloatManagerB,
region.IStart(wm), region.BStart(wm),
region.ISize(wm), region.BSize(wm));
#endif
#ifdef DEBUG
if (nsBlockFrame::gNoisyReflow) {
nsRect r = aFloat->GetRect();
nsFrame::IndentBy(stdout, nsBlockFrame::gNoiseIndent);
printf("placed float: ");
nsFrame::ListTag(stdout, aFloat);
printf(" %d,%d,%d,%d\n", r.x, r.y, r.width, r.height);
}
#endif
return true;
}
void
nsCaret::ComputeCaretRects(nsIFrame* aFrame, int32_t aFrameOffset,
nsRect* aCaretRect, nsRect* aHookRect)
{
NS_ASSERTION(aFrame, "Should have a frame here");
WritingMode wm = aFrame->GetWritingMode();
bool isVertical = wm.IsVertical();
nscoord bidiIndicatorSize;
*aCaretRect = GetGeometryForFrame(aFrame, aFrameOffset, &bidiIndicatorSize);
// on RTL frames the right edge of mCaretRect must be equal to framePos
const nsStyleVisibility* vis = aFrame->StyleVisibility();
if (NS_STYLE_DIRECTION_RTL == vis->mDirection) {
if (isVertical) {
aCaretRect->y -= aCaretRect->height;
} else {
aCaretRect->x -= aCaretRect->width;
}
}
// Simon -- make a hook to draw to the left or right of the caret to show keyboard language direction
aHookRect->SetEmpty();
if (!IsBidiUI()) {
return;
}
bool isCaretRTL;
nsIBidiKeyboard* bidiKeyboard = nsContentUtils::GetBidiKeyboard();
// if bidiKeyboard->IsLangRTL() fails, there is no way to tell the
// keyboard direction, or the user has no right-to-left keyboard
// installed, so we never draw the hook.
if (bidiKeyboard && NS_SUCCEEDED(bidiKeyboard->IsLangRTL(&isCaretRTL))) {
// If keyboard language is RTL, draw the hook on the left; if LTR, to the right
// The height of the hook rectangle is the same as the width of the caret
// rectangle.
if (isVertical) {
bool isSidewaysLR = wm.IsVerticalLR() && !wm.IsLineInverted();
if (isSidewaysLR) {
aHookRect->SetRect(aCaretRect->x + bidiIndicatorSize,
aCaretRect->y + (!isCaretRTL ? bidiIndicatorSize * -1 :
aCaretRect->height),
aCaretRect->height,
bidiIndicatorSize);
} else {
aHookRect->SetRect(aCaretRect->XMost() - bidiIndicatorSize,
aCaretRect->y + (isCaretRTL ? bidiIndicatorSize * -1 :
aCaretRect->height),
aCaretRect->height,
bidiIndicatorSize);
}
} else {
aHookRect->SetRect(aCaretRect->x + (isCaretRTL ? bidiIndicatorSize * -1 :
aCaretRect->width),
aCaretRect->y + bidiIndicatorSize,
bidiIndicatorSize,
aCaretRect->width);
}
}
}
