void
nsTableColGroupFrame::Reflow(nsPresContext* aPresContext,
ReflowOutput& aDesiredSize,
const ReflowInput& aReflowInput,
nsReflowStatus& aStatus)
{
MarkInReflow();
DO_GLOBAL_REFLOW_COUNT("nsTableColGroupFrame");
DISPLAY_REFLOW(aPresContext, this, aReflowInput, aDesiredSize, aStatus);
NS_ASSERTION(nullptr!=mContent, "bad state -- null content for frame");
const nsStyleVisibility* groupVis = StyleVisibility();
bool collapseGroup = (NS_STYLE_VISIBILITY_COLLAPSE == groupVis->mVisible);
if (collapseGroup) {
GetTableFrame()->SetNeedToCollapse(true);
}
// for every content child that (is a column thingy and does not already have a frame)
// create a frame and adjust it's style
for (nsIFrame *kidFrame = mFrames.FirstChild(); kidFrame;
kidFrame = kidFrame->GetNextSibling()) {
// Give the child frame a chance to reflow, even though we know it'll have 0 size
ReflowOutput kidSize(aReflowInput);
ReflowInput kidReflowInput(aPresContext, aReflowInput, kidFrame,
LogicalSize(kidFrame->GetWritingMode()));
nsReflowStatus status;
ReflowChild(kidFrame, aPresContext, kidSize, kidReflowInput, 0, 0, 0, status);
FinishReflowChild(kidFrame, aPresContext, kidSize, nullptr, 0, 0, 0);
}
aDesiredSize.ClearSize();
aStatus.Reset();
NS_FRAME_SET_TRUNCATION(aStatus, aReflowInput, aDesiredSize);
}
// Only place the selected child ...
/* virtual */ nsresult
nsMathMLSelectedFrame::Place(DrawTarget* aDrawTarget,
bool aPlaceOrigin,
ReflowOutput& aDesiredSize)
{
nsIFrame* childFrame = GetSelectedFrame();
if (mInvalidMarkup) {
return ReflowError(aDrawTarget, aDesiredSize);
}
aDesiredSize.ClearSize();
aDesiredSize.SetBlockStartAscent(0);
mBoundingMetrics = nsBoundingMetrics();
if (childFrame) {
GetReflowAndBoundingMetricsFor(childFrame, aDesiredSize, mBoundingMetrics);
if (aPlaceOrigin) {
FinishReflowChild(childFrame, PresContext(), aDesiredSize, nullptr, 0, 0, 0);
}
mReference.x = 0;
mReference.y = aDesiredSize.BlockStartAscent();
}
aDesiredSize.mBoundingMetrics = mBoundingMetrics;
return NS_OK;
}
// Only reflow the selected child ...
void
nsMathMLSelectedFrame::Reflow(nsPresContext* aPresContext,
ReflowOutput& aDesiredSize,
const ReflowInput& aReflowInput,
nsReflowStatus& aStatus)
{
MarkInReflow();
mPresentationData.flags &= ~NS_MATHML_ERROR;
aStatus.Reset();
aDesiredSize.ClearSize();
aDesiredSize.SetBlockStartAscent(0);
mBoundingMetrics = nsBoundingMetrics();
nsIFrame* childFrame = GetSelectedFrame();
if (childFrame) {
WritingMode wm = childFrame->GetWritingMode();
LogicalSize availSize = aReflowInput.ComputedSize(wm);
availSize.BSize(wm) = NS_UNCONSTRAINEDSIZE;
ReflowInput childReflowInput(aPresContext, aReflowInput,
childFrame, availSize);
ReflowChild(childFrame, aPresContext, aDesiredSize,
childReflowInput, aStatus);
SaveReflowAndBoundingMetricsFor(childFrame, aDesiredSize,
aDesiredSize.mBoundingMetrics);
mBoundingMetrics = aDesiredSize.mBoundingMetrics;
}
FinalizeReflow(aReflowInput.mRenderingContext->GetDrawTarget(), aDesiredSize);
NS_FRAME_SET_TRUNCATION(aStatus, aReflowInput, aDesiredSize);
}
void
nsPlaceholderFrame::Reflow(nsPresContext* aPresContext,
ReflowOutput& aDesiredSize,
const ReflowInput& aReflowInput,
nsReflowStatus& aStatus)
{
#ifdef DEBUG
// We should be getting reflowed before our out-of-flow.
// If this is our first reflow, and our out-of-flow has already received its
// first reflow (before us), complain.
// XXXdholbert This "look for a previous continuation or IB-split sibling"
// code could use nsLayoutUtils::GetPrevContinuationOrIBSplitSibling(), if
// we ever add a function like that. (We currently have a "Next" version.)
if ((GetStateBits() & NS_FRAME_FIRST_REFLOW) &&
!(mOutOfFlowFrame->GetStateBits() & NS_FRAME_FIRST_REFLOW)) {
// Unfortunately, this can currently happen when the placeholder is in a
// later continuation or later IB-split sibling than its out-of-flow (as
// is the case in some of our existing unit tests). So for now, in that
// case, we'll warn instead of asserting.
bool isInContinuationOrIBSplit = false;
nsIFrame* ancestor = this;
while ((ancestor = ancestor->GetParent())) {
if (ancestor->GetPrevContinuation() ||
ancestor->Properties().Get(IBSplitPrevSibling())) {
isInContinuationOrIBSplit = true;
break;
}
}
if (isInContinuationOrIBSplit) {
NS_WARNING("Out-of-flow frame got reflowed before its placeholder");
} else {
NS_ERROR("Out-of-flow frame got reflowed before its placeholder");
}
}
#endif
MarkInReflow();
DO_GLOBAL_REFLOW_COUNT("nsPlaceholderFrame");
DISPLAY_REFLOW(aPresContext, this, aReflowInput, aDesiredSize, aStatus);
aDesiredSize.ClearSize();
aStatus = NS_FRAME_COMPLETE;
NS_FRAME_SET_TRUNCATION(aStatus, aReflowInput, aDesiredSize);
}
void
nsMathMLmrootFrame::Reflow(nsPresContext* aPresContext,
ReflowOutput& aDesiredSize,
const ReflowInput& aReflowInput,
nsReflowStatus& aStatus)
{
MarkInReflow();
nsReflowStatus childStatus;
mPresentationData.flags &= ~NS_MATHML_ERROR;
aDesiredSize.ClearSize();
aDesiredSize.SetBlockStartAscent(0);
nsBoundingMetrics bmSqr, bmBase, bmIndex;
DrawTarget* drawTarget = aReflowInput.mRenderingContext->GetDrawTarget();
//////////////////
// Reflow Children
int32_t count = 0;
nsIFrame* baseFrame = nullptr;
nsIFrame* indexFrame = nullptr;
ReflowOutput baseSize(aReflowInput);
ReflowOutput indexSize(aReflowInput);
nsIFrame* childFrame = mFrames.FirstChild();
while (childFrame) {
// ask our children to compute their bounding metrics
ReflowOutput childDesiredSize(aReflowInput,
aDesiredSize.mFlags
| NS_REFLOW_CALC_BOUNDING_METRICS);
WritingMode wm = childFrame->GetWritingMode();
LogicalSize availSize = aReflowInput.ComputedSize(wm);
availSize.BSize(wm) = NS_UNCONSTRAINEDSIZE;
ReflowInput childReflowInput(aPresContext, aReflowInput,
childFrame, availSize);
ReflowChild(childFrame, aPresContext,
childDesiredSize, childReflowInput, childStatus);
//NS_ASSERTION(childStatus.IsComplete(), "bad status");
if (0 == count) {
// base
baseFrame = childFrame;
baseSize = childDesiredSize;
bmBase = childDesiredSize.mBoundingMetrics;
}
else if (1 == count) {
// index
indexFrame = childFrame;
indexSize = childDesiredSize;
bmIndex = childDesiredSize.mBoundingMetrics;
}
count++;
childFrame = childFrame->GetNextSibling();
}
if (2 != count) {
// report an error, encourage people to get their markups in order
ReportChildCountError();
ReflowError(drawTarget, aDesiredSize);
aStatus.Reset();
NS_FRAME_SET_TRUNCATION(aStatus, aReflowInput, aDesiredSize);
// Call DidReflow() for the child frames we successfully did reflow.
DidReflowChildren(mFrames.FirstChild(), childFrame);
return;
}
////////////
// Prepare the radical symbol and the overline bar
float fontSizeInflation = nsLayoutUtils::FontSizeInflationFor(this);
RefPtr<nsFontMetrics> fm =
nsLayoutUtils::GetFontMetricsForFrame(this, fontSizeInflation);
nscoord ruleThickness, leading, psi;
GetRadicalParameters(fm, StyleFont()->mMathDisplay ==
NS_MATHML_DISPLAYSTYLE_BLOCK,
ruleThickness, leading, psi);
// built-in: adjust clearance psi to emulate \mathstrut using '1' (TexBook, p.131)
char16_t one = '1';
nsBoundingMetrics bmOne =
nsLayoutUtils::AppUnitBoundsOfString(&one, 1, *fm, drawTarget);
if (bmOne.ascent > bmBase.ascent)
psi += bmOne.ascent - bmBase.ascent;
// make sure that the rule appears on on screen
nscoord onePixel = nsPresContext::CSSPixelsToAppUnits(1);
if (ruleThickness < onePixel) {
ruleThickness = onePixel;
}
// adjust clearance psi to get an exact number of pixels -- this
// gives a nicer & uniform look on stacked radicals (bug 130282)
nscoord delta = psi % onePixel;
if (delta)
psi += onePixel - delta; // round up
// Stretch the radical symbol to the appropriate height if it is not big enough.
nsBoundingMetrics contSize = bmBase;
contSize.descent = bmBase.ascent + bmBase.descent + psi;
contSize.ascent = ruleThickness;
// height(radical) should be >= height(base) + psi + ruleThickness
nsBoundingMetrics radicalSize;
mSqrChar.Stretch(aPresContext, drawTarget,
fontSizeInflation,
NS_STRETCH_DIRECTION_VERTICAL,
contSize, radicalSize,
NS_STRETCH_LARGER,
StyleVisibility()->mDirection);
// radicalSize have changed at this point, and should match with
// the bounding metrics of the char
mSqrChar.GetBoundingMetrics(bmSqr);
// Update the desired size for the container (like msqrt, index is not yet included)
// the baseline will be that of the base.
mBoundingMetrics.ascent = bmBase.ascent + psi + ruleThickness;
mBoundingMetrics.descent =
std::max(bmBase.descent,
(bmSqr.ascent + bmSqr.descent - mBoundingMetrics.ascent));
mBoundingMetrics.width = bmSqr.width + bmBase.width;
mBoundingMetrics.leftBearing = bmSqr.leftBearing;
mBoundingMetrics.rightBearing = bmSqr.width +
std::max(bmBase.width, bmBase.rightBearing); // take also care of the rule
aDesiredSize.SetBlockStartAscent(mBoundingMetrics.ascent + leading);
aDesiredSize.Height() = aDesiredSize.BlockStartAscent() +
std::max(baseSize.Height() - baseSize.BlockStartAscent(),
mBoundingMetrics.descent + ruleThickness);
aDesiredSize.Width() = mBoundingMetrics.width;
/////////////
// Re-adjust the desired size to include the index.
// the index is raised by some fraction of the height
// of the radical, see \mroot macro in App. B, TexBook
float raiseIndexPercent = 0.6f;
gfxFont* mathFont = fm->GetThebesFontGroup()->GetFirstMathFont();
if (mathFont) {
raiseIndexPercent = mathFont->MathTable()->
Constant(gfxMathTable::RadicalDegreeBottomRaisePercent);
}
nscoord raiseIndexDelta = NSToCoordRound(raiseIndexPercent *
(bmSqr.ascent + bmSqr.descent));
nscoord indexRaisedAscent = mBoundingMetrics.ascent // top of radical
- (bmSqr.ascent + bmSqr.descent) // to bottom of radical
+ raiseIndexDelta + bmIndex.ascent + bmIndex.descent; // to top of raised index
nscoord indexClearance = 0;
if (mBoundingMetrics.ascent < indexRaisedAscent) {
indexClearance =
indexRaisedAscent - mBoundingMetrics.ascent; // excess gap introduced by a tall index
mBoundingMetrics.ascent = indexRaisedAscent;
nscoord descent = aDesiredSize.Height() - aDesiredSize.BlockStartAscent();
aDesiredSize.SetBlockStartAscent(mBoundingMetrics.ascent + leading);
aDesiredSize.Height() = aDesiredSize.BlockStartAscent() + descent;
}
nscoord dxIndex, dxSqr;
GetRadicalXOffsets(bmIndex.width, bmSqr.width, fm, &dxIndex, &dxSqr);
mBoundingMetrics.width = dxSqr + bmSqr.width + bmBase.width;
mBoundingMetrics.leftBearing =
std::min(dxIndex + bmIndex.leftBearing, dxSqr + bmSqr.leftBearing);
mBoundingMetrics.rightBearing = dxSqr + bmSqr.width +
std::max(bmBase.width, bmBase.rightBearing);
aDesiredSize.Width() = mBoundingMetrics.width;
aDesiredSize.mBoundingMetrics = mBoundingMetrics;
GatherAndStoreOverflow(&aDesiredSize);
// place the index
nscoord dx = dxIndex;
nscoord dy = aDesiredSize.BlockStartAscent() -
(indexRaisedAscent + indexSize.BlockStartAscent() - bmIndex.ascent);
FinishReflowChild(indexFrame, aPresContext, indexSize, nullptr,
MirrorIfRTL(aDesiredSize.Width(), indexSize.Width(), dx),
dy, 0);
// place the radical symbol and the radical bar
dx = dxSqr;
dy = indexClearance + leading; // leave a leading at the top
mSqrChar.SetRect(nsRect(MirrorIfRTL(aDesiredSize.Width(), bmSqr.width, dx),
dy, bmSqr.width, bmSqr.ascent + bmSqr.descent));
dx += bmSqr.width;
mBarRect.SetRect(MirrorIfRTL(aDesiredSize.Width(), bmBase.width, dx),
dy, bmBase.width, ruleThickness);
// place the base
dy = aDesiredSize.BlockStartAscent() - baseSize.BlockStartAscent();
FinishReflowChild(baseFrame, aPresContext, baseSize, nullptr,
MirrorIfRTL(aDesiredSize.Width(), baseSize.Width(), dx),
dy, 0);
mReference.x = 0;
mReference.y = aDesiredSize.BlockStartAscent();
aStatus.Reset();
NS_FRAME_SET_TRUNCATION(aStatus, aReflowInput, aDesiredSize);
}
void
nsTableWrapperFrame::Reflow(nsPresContext* aPresContext,
ReflowOutput& aDesiredSize,
const ReflowInput& aOuterRI,
nsReflowStatus& aStatus)
{
MarkInReflow();
DO_GLOBAL_REFLOW_COUNT("nsTableWrapperFrame");
DISPLAY_REFLOW(aPresContext, this, aOuterRI, aDesiredSize, aStatus);
// Initialize out parameters
aDesiredSize.ClearSize();
aStatus = NS_FRAME_COMPLETE;
if (!HasAnyStateBits(NS_FRAME_FIRST_REFLOW)) {
// Set up our kids. They're already present, on an overflow list,
// or there are none so we'll create them now
MoveOverflowToChildList();
}
Maybe<ReflowInput> captionRI;
Maybe<ReflowInput> innerRI;
nsRect origInnerRect = InnerTableFrame()->GetRect();
nsRect origInnerVisualOverflow = InnerTableFrame()->GetVisualOverflowRect();
bool innerFirstReflow =
InnerTableFrame()->HasAnyStateBits(NS_FRAME_FIRST_REFLOW);
nsRect origCaptionRect;
nsRect origCaptionVisualOverflow;
bool captionFirstReflow = false;
if (mCaptionFrames.NotEmpty()) {
origCaptionRect = mCaptionFrames.FirstChild()->GetRect();
origCaptionVisualOverflow =
mCaptionFrames.FirstChild()->GetVisualOverflowRect();
captionFirstReflow =
mCaptionFrames.FirstChild()->HasAnyStateBits(NS_FRAME_FIRST_REFLOW);
}
// ComputeAutoSize has to match this logic.
WritingMode wm = aOuterRI.GetWritingMode();
uint8_t captionSide = GetCaptionSide();
WritingMode captionWM = wm; // will be changed below if necessary
if (captionSide == NO_SIDE) {
// We don't have a caption.
OuterBeginReflowChild(aPresContext, InnerTableFrame(), aOuterRI,
innerRI, aOuterRI.ComputedSize(wm).ISize(wm));
} else if (captionSide == NS_STYLE_CAPTION_SIDE_LEFT ||
captionSide == NS_STYLE_CAPTION_SIDE_RIGHT) {
// ComputeAutoSize takes care of making side captions small. Compute
// the caption's size first, and tell the table to fit in what's left.
OuterBeginReflowChild(aPresContext, mCaptionFrames.FirstChild(), aOuterRI,
captionRI, aOuterRI.ComputedSize(wm).ISize(wm));
captionWM = captionRI->GetWritingMode();
nscoord innerAvailISize = aOuterRI.ComputedSize(wm).ISize(wm) -
captionRI->ComputedSizeWithMarginBorderPadding(wm).ISize(wm);
OuterBeginReflowChild(aPresContext, InnerTableFrame(), aOuterRI,
innerRI, innerAvailISize);
} else if (captionSide == NS_STYLE_CAPTION_SIDE_TOP ||
captionSide == NS_STYLE_CAPTION_SIDE_BOTTOM) {
// Compute the table's size first, and then prevent the caption from
// being larger in the inline dir unless it has to be.
//
// Note that CSS 2.1 (but not 2.0) says:
// The width of the anonymous box is the border-edge width of the
// table box inside it
// We don't actually make our anonymous box that isize (if we did,
// it would break 'auto' margins), but this effectively does that.
OuterBeginReflowChild(aPresContext, InnerTableFrame(), aOuterRI,
innerRI, aOuterRI.ComputedSize(wm).ISize(wm));
// It's good that CSS 2.1 says not to include margins, since we
// can't, since they already been converted so they exactly
// fill the available isize (ignoring the margin on one side if
// neither are auto). (We take advantage of that later when we call
// GetCaptionOrigin, though.)
nscoord innerBorderISize =
innerRI->ComputedSizeWithBorderPadding(wm).ISize(wm);
OuterBeginReflowChild(aPresContext, mCaptionFrames.FirstChild(), aOuterRI,
captionRI, innerBorderISize);
captionWM = captionRI->GetWritingMode();
} else {
NS_ASSERTION(captionSide == NS_STYLE_CAPTION_SIDE_TOP_OUTSIDE ||
captionSide == NS_STYLE_CAPTION_SIDE_BOTTOM_OUTSIDE,
"unexpected caption-side");
// Size the table and the caption independently.
captionWM = mCaptionFrames.FirstChild()->GetWritingMode();
OuterBeginReflowChild(aPresContext, mCaptionFrames.FirstChild(),
aOuterRI, captionRI,
aOuterRI.ComputedSize(captionWM).ISize(captionWM));
OuterBeginReflowChild(aPresContext, InnerTableFrame(), aOuterRI,
innerRI, aOuterRI.ComputedSize(wm).ISize(wm));
}
// First reflow the caption.
Maybe<ReflowOutput> captionMet;
LogicalSize captionSize(wm);
LogicalMargin captionMargin(wm);
if (mCaptionFrames.NotEmpty()) {
captionMet.emplace(wm);
nsReflowStatus capStatus; // don't let the caption cause incomplete
OuterDoReflowChild(aPresContext, mCaptionFrames.FirstChild(),
*captionRI, *captionMet, capStatus);
captionSize.ISize(wm) = captionMet->ISize(wm);
captionSize.BSize(wm) = captionMet->BSize(wm);
captionMargin =
captionRI->ComputedLogicalMargin().ConvertTo(wm, captionWM);
// Now that we know the bsize of the caption, reduce the available bsize
// for the table frame if we are bsize constrained and the caption is above
// or below the inner table. Also reduce the CB size that we store for
// our children in case we're a grid item, by the same amount.
LogicalSize* cbSize = Properties().Get(GridItemCBSizeProperty());
if (NS_UNCONSTRAINEDSIZE != aOuterRI.AvailableBSize() || cbSize) {
nscoord captionBSize = 0;
nscoord captionISize = 0;
switch (captionSide) {
case NS_STYLE_CAPTION_SIDE_TOP:
case NS_STYLE_CAPTION_SIDE_BOTTOM:
case NS_STYLE_CAPTION_SIDE_TOP_OUTSIDE:
case NS_STYLE_CAPTION_SIDE_BOTTOM_OUTSIDE:
captionBSize = captionSize.BSize(wm) + captionMargin.BStartEnd(wm);
break;
case NS_STYLE_CAPTION_SIDE_LEFT:
case NS_STYLE_CAPTION_SIDE_RIGHT:
captionISize = captionSize.ISize(wm) + captionMargin.IStartEnd(wm);
break;
}
if (NS_UNCONSTRAINEDSIZE != aOuterRI.AvailableBSize()) {
innerRI->AvailableBSize() =
std::max(0, innerRI->AvailableBSize() - captionBSize);
}
if (cbSize) {
// Shrink the CB size by the size reserved for the caption.
LogicalSize oldCBSize = *cbSize;
cbSize->ISize(wm) = std::max(0, cbSize->ISize(wm) - captionISize);
cbSize->BSize(wm) = std::max(0, cbSize->BSize(wm) - captionBSize);
if (oldCBSize != *cbSize) {
// Reset the inner table's ReflowInput to stretch it to the new size.
innerRI.reset();
OuterBeginReflowChild(aPresContext, InnerTableFrame(), aOuterRI,
innerRI, aOuterRI.ComputedSize(wm).ISize(wm));
}
}
}
}
// Then, now that we know how much to reduce the isize of the inner
// table to account for side captions, reflow the inner table.
ReflowOutput innerMet(innerRI->GetWritingMode());
OuterDoReflowChild(aPresContext, InnerTableFrame(), *innerRI,
innerMet, aStatus);
LogicalSize innerSize(wm, innerMet.ISize(wm), innerMet.BSize(wm));
LogicalMargin innerMargin = innerRI->ComputedLogicalMargin();
LogicalSize containSize(wm, GetContainingBlockSize(aOuterRI));
// Now that we've reflowed both we can place them.
// XXXldb Most of the input variables here are now uninitialized!
// XXX Need to recompute inner table's auto margins for the case of side
// captions. (Caption's are broken too, but that should be fixed earlier.)
// Compute the desiredSize so that we can use it as the containerSize
// for the FinishReflowChild calls below.
LogicalSize desiredSize(wm);
SetDesiredSize(captionSide, innerSize, captionSize,
innerMargin, captionMargin,
desiredSize.ISize(wm), desiredSize.BSize(wm), wm);
aDesiredSize.SetSize(wm, desiredSize);
nsSize containerSize = aDesiredSize.PhysicalSize();
// XXX It's possible for this to be NS_UNCONSTRAINEDSIZE, which will result
// in assertions from FinishReflowChild.
if (mCaptionFrames.NotEmpty()) {
LogicalPoint captionOrigin(wm);
GetCaptionOrigin(captionSide, containSize, innerSize, innerMargin,
captionSize, captionMargin, captionOrigin, wm);
FinishReflowChild(mCaptionFrames.FirstChild(), aPresContext, *captionMet,
captionRI.ptr(), wm, captionOrigin, containerSize, 0);
captionRI.reset();
}
// XXX If the bsize is constrained then we need to check whether
// everything still fits...
LogicalPoint innerOrigin(wm);
GetInnerOrigin(captionSide, containSize, captionSize, captionMargin,
innerSize, innerMargin, innerOrigin, wm);
FinishReflowChild(InnerTableFrame(), aPresContext, innerMet, innerRI.ptr(),
wm, innerOrigin, containerSize, 0);
innerRI.reset();
nsTableFrame::InvalidateTableFrame(InnerTableFrame(), origInnerRect,
origInnerVisualOverflow,
innerFirstReflow);
if (mCaptionFrames.NotEmpty()) {
nsTableFrame::InvalidateTableFrame(mCaptionFrames.FirstChild(),
origCaptionRect,
origCaptionVisualOverflow,
captionFirstReflow);
}
UpdateOverflowAreas(aDesiredSize);
if (GetPrevInFlow()) {
ReflowOverflowContainerChildren(aPresContext, aOuterRI,
aDesiredSize.mOverflowAreas, 0,
aStatus);
}
FinishReflowWithAbsoluteFrames(aPresContext, aDesiredSize, aOuterRI, aStatus);
// Return our desired rect
NS_FRAME_SET_TRUNCATION(aStatus, aOuterRI, aDesiredSize);
}
