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Issue #1355 - Make nsTableCellFrame::GetColIndex/GetRowIndex faster

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We can devirtualize it, remove some branches.
This commit is contained in:
win7-7 2020-02-16 16:06:53 +02:00 • committed by Roy Tam
commit e8bb5560f7
12 changed files with 106 additions and 152 deletions
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20
layout/tables/nsTableCellFrame.h
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@ -183,7 +183,10 @@ public:
NS_IMETHOD GetCellIndexes(int32_t &aRowIndex, int32_t &aColIndex) override;
/** return the mapped cell's row index (starting at 0 for the first row) */
virtual nsresult GetRowIndex(int32_t &aRowIndex) const override;
uint32_t RowIndex() const
{
return static_cast<nsTableRowFrame*>(GetParent())->GetRowIndex();
}
/**
* return the cell's specified col span. this is what was specified in the
@ -194,7 +197,16 @@ public:
int32_t GetColSpan();
/** return the cell's column index (starting at 0 for the first column) */
virtual nsresult GetColIndex(int32_t &aColIndex) const override;
uint32_t ColIndex() const
{
// NOTE: We copy this from previous continuations, and we don't ever have
// dynamic updates when tables split, so our mColIndex always matches our
// first continuation's.
MOZ_ASSERT(static_cast<nsTableCellFrame*>(FirstContinuation())->mColIndex ==
mColIndex,
"mColIndex out of sync with first continuation");
return mColIndex;
}
void SetColIndex(int32_t aColIndex);
/** return the available isize given to this frame during its last reflow */
@ -246,9 +258,9 @@ public:
virtual void InvalidateFrame(uint32_t aDisplayItemKey = 0) override;
virtual void InvalidateFrameWithRect(const nsRect& aRect, uint32_t aDisplayItemKey = 0) override;
virtual void InvalidateFrameForRemoval() override { InvalidateFrameSubtree(); }
bool ShouldPaintBordersAndBackgrounds() const;
bool ShouldPaintBackground(nsDisplayListBuilder* aBuilder);
protected: