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-rw-r--r--layout/generic/nsGridContainerFrame.cpp68
1 files changed, 59 insertions, 9 deletions
diff --git a/layout/generic/nsGridContainerFrame.cpp b/layout/generic/nsGridContainerFrame.cpp
index f3e28acc4..8f117b5ab 100644
--- a/layout/generic/nsGridContainerFrame.cpp
+++ b/layout/generic/nsGridContainerFrame.cpp
@@ -2093,6 +2093,18 @@ struct MOZ_STACK_CLASS nsGridContainerFrame::GridReflowInput
SizingConstraint aConstraint);
/**
+ * Return the percentage basis for a grid item in its writing-mode.
+ * If aAxis is eLogicalAxisInline then we return NS_UNCONSTRAINEDSIZE in
+ * both axes since we know all track sizes are indefinite at this point
+ * (we calculate column sizes before row sizes). Otherwise, assert that
+ * column sizes are known and calculate the size for aGridItem.mArea.mCols
+ * and use NS_UNCONSTRAINEDSIZE in the other axis.
+ * @param aAxis the axis we're currently calculating track sizes for
+ */
+ LogicalSize PercentageBasisFor(LogicalAxis aAxis,
+ const GridItemInfo& aGridItem) const;
+
+ /**
* Return the containing block for a grid item occupying aArea.
*/
LogicalRect ContainingBlockFor(const GridArea& aArea) const;
@@ -3734,18 +3746,20 @@ MeasuringReflow(nsIFrame* aChild,
* the child's margin-box) in aAxis.
*/
static nscoord
-ContentContribution(const GridItemInfo& aGridItem,
- const GridReflowInput& aState,
- nsRenderingContext* aRC,
- WritingMode aCBWM,
- LogicalAxis aAxis,
- IntrinsicISizeType aConstraint,
- nscoord aMinSizeClamp = NS_MAXSIZE,
- uint32_t aFlags = 0)
+ContentContribution(const GridItemInfo& aGridItem,
+ const GridReflowInput& aState,
+ nsRenderingContext* aRC,
+ WritingMode aCBWM,
+ LogicalAxis aAxis,
+ const Maybe<LogicalSize>& aPercentageBasis,
+ IntrinsicISizeType aConstraint,
+ nscoord aMinSizeClamp = NS_MAXSIZE,
+ uint32_t aFlags = 0)
{
nsIFrame* child = aGridItem.mFrame;
PhysicalAxis axis(aCBWM.PhysicalAxis(aAxis));
nscoord size = nsLayoutUtils::IntrinsicForAxis(axis, aRC, child, aConstraint,
+ aPercentageBasis,
aFlags | nsLayoutUtils::BAIL_IF_REFLOW_NEEDED |
nsLayoutUtils::ADD_PERCENTS,
aMinSizeClamp);
@@ -3815,6 +3829,10 @@ struct CachedIntrinsicSizes
Maybe<nscoord> mMinSize;
Maybe<nscoord> mMinContentContribution;
Maybe<nscoord> mMaxContentContribution;
+
+ // The item's percentage basis for intrinsic sizing purposes.
+ Maybe<LogicalSize> mPercentageBasis;
+
// "if the grid item spans only grid tracks that have a fixed max track
// sizing function, its automatic minimum size in that dimension is
// further clamped to less than or equal to the size necessary to fit its
@@ -3835,7 +3853,11 @@ MinContentContribution(const GridItemInfo& aGridItem,
if (aCache->mMinContentContribution.isSome()) {
return aCache->mMinContentContribution.value();
}
+ if (aCache->mPercentageBasis.isNothing()) {
+ aCache->mPercentageBasis.emplace(aState.PercentageBasisFor(aAxis, aGridItem));
+ }
nscoord s = ContentContribution(aGridItem, aState, aRC, aCBWM, aAxis,
+ aCache->mPercentageBasis,
nsLayoutUtils::MIN_ISIZE,
aCache->mMinSizeClamp);
aCache->mMinContentContribution.emplace(s);
@@ -3853,7 +3875,11 @@ MaxContentContribution(const GridItemInfo& aGridItem,
if (aCache->mMaxContentContribution.isSome()) {
return aCache->mMaxContentContribution.value();
}
+ if (aCache->mPercentageBasis.isNothing()) {
+ aCache->mPercentageBasis.emplace(aState.PercentageBasisFor(aAxis, aGridItem));
+ }
nscoord s = ContentContribution(aGridItem, aState, aRC, aCBWM, aAxis,
+ aCache->mPercentageBasis,
nsLayoutUtils::PREF_ISIZE,
aCache->mMinSizeClamp);
aCache->mMaxContentContribution.emplace(s);
@@ -3907,7 +3933,11 @@ MinSize(const GridItemInfo& aGridItem,
child->StyleDisplay()->mOverflowX == NS_STYLE_OVERFLOW_VISIBLE)) {
// Now calculate the "content size" part and return whichever is smaller.
MOZ_ASSERT(unit != eStyleUnit_Enumerated || sz == NS_UNCONSTRAINEDSIZE);
+ if (aCache->mPercentageBasis.isNothing()) {
+ aCache->mPercentageBasis.emplace(aState.PercentageBasisFor(aAxis, aGridItem));
+ }
sz = std::min(sz, ContentContribution(aGridItem, aState, aRC, aCBWM, aAxis,
+ aCache->mPercentageBasis,
nsLayoutUtils::MIN_ISIZE,
aCache->mMinSizeClamp,
nsLayoutUtils::MIN_INTRINSIC_ISIZE));
@@ -4721,7 +4751,8 @@ nsGridContainerFrame::Tracks::FindUsedFlexFraction(
const GridItemInfo& item = aGridItems[iter.GridItemIndex()];
if (item.mState[mAxis] & ItemState::eIsFlexing) {
// XXX optimize: bug 1194446
- nscoord spaceToFill = ContentContribution(item, aState, rc, wm, mAxis,
+ auto pb = Some(aState.PercentageBasisFor(mAxis, item));
+ nscoord spaceToFill = ContentContribution(item, aState, rc, wm, mAxis, pb,
nsLayoutUtils::PREF_ISIZE);
if (spaceToFill <= 0) {
continue;
@@ -5052,6 +5083,25 @@ nsGridContainerFrame::LineRange::ToPositionAndLengthForAbsPos(
}
}
+LogicalSize
+nsGridContainerFrame::GridReflowInput::PercentageBasisFor(
+ LogicalAxis aAxis,
+ const GridItemInfo& aGridItem) const
+{
+ auto wm = aGridItem.mFrame->GetWritingMode();
+ if (aAxis == eLogicalAxisInline) {
+ return LogicalSize(wm, NS_UNCONSTRAINEDSIZE, NS_UNCONSTRAINEDSIZE);
+ }
+ // Note: for now, we only resolve transferred percentages to row sizing.
+ // We may need to adjust these assertions once we implement bug 1300366.
+ MOZ_ASSERT(mCols.mCanResolveLineRangeSize);
+ MOZ_ASSERT(!mRows.mCanResolveLineRangeSize);
+ nscoord colSize = aGridItem.mArea.mCols.ToLength(mCols.mSizes);
+ nscoord rowSize = NS_UNCONSTRAINEDSIZE;
+ return !wm.IsOrthogonalTo(mWM) ?
+ LogicalSize(wm, colSize, rowSize) : LogicalSize(wm, rowSize, colSize);
+}
+
LogicalRect
nsGridContainerFrame::GridReflowInput::ContainingBlockFor(const GridArea& aArea) const
{