void
nsRubyTextContainerFrame::BeginRTCLineLayout(nsPresContext* aPresContext,
const nsHTMLReflowState& aReflowState)
{
// Construct block reflow state and line layout
nscoord consumedBSize = GetConsumedBSize();
ClearLineCursor();
mISize = 0;
nsBlockReflowState state(aReflowState, aPresContext, this, true, true,
false, consumedBSize);
NS_ASSERTION(!mLines.empty(),
"There should be at least one line in the ruby text container");
line_iterator firstLine = begin_lines();
mLineLayout = mozilla::MakeUnique<nsLineLayout>(
state.mPresContext,
state.mReflowState.mFloatManager,
&state.mReflowState, &firstLine);
mLineLayout->Init(&state, state.mMinLineHeight, state.mLineNumber);
mozilla::WritingMode lineWM = aReflowState.mLineLayout->GetWritingMode();
mozilla::LogicalRect lineRect(state.mContentArea);
nscoord iStart = lineRect.IStart(lineWM);
nscoord availISize = lineRect.ISize(lineWM);
nscoord availBSize = NS_UNCONSTRAINEDSIZE;
mLineLayout->BeginLineReflow(iStart, state.mBCoord,
availISize, availBSize,
false,
false,
lineWM, state.mContainerWidth);
}
nscoord
nsSplittableFrame::GetEffectiveComputedBSize(const nsHTMLReflowState& aReflowState,
nscoord aConsumedBSize) const
{
nscoord bSize = aReflowState.ComputedBSize();
if (bSize == NS_INTRINSICSIZE) {
return NS_INTRINSICSIZE;
}
if (aConsumedBSize == NS_INTRINSICSIZE) {
aConsumedBSize = GetConsumedBSize();
}
bSize -= aConsumedBSize;
// We may have stretched the frame beyond its computed height. Oh well.
return std::max(0, bSize);
}