Adding upstream version 1:115.7.0.upstream/1%115.7.0upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 411 insertions, 0 deletions

diff --git a/layout/tables/nsTableRowGroupFrame.h b/layout/tables/nsTableRowGroupFrame.h
new file mode 100644
index 0000000000..1ee23768b9
--- /dev/null
+++ b/layout/tables/nsTableRowGroupFrame.h
@@ -0,0 +1,411 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+#ifndef nsTableRowGroupFrame_h__
+#define nsTableRowGroupFrame_h__
+
+#include "mozilla/Attributes.h"
+#include "nscore.h"
+#include "nsContainerFrame.h"
+#include "nsAtom.h"
+#include "nsILineIterator.h"
+#include "nsTArray.h"
+#include "nsTableFrame.h"
+#include "mozilla/WritingModes.h"
+
+class nsTableRowFrame;
+namespace mozilla {
+class PresShell;
+struct TableRowGroupReflowInput;
+}  // namespace mozilla
+
+#define MIN_ROWS_NEEDING_CURSOR 20
+
+/**
+ * nsTableRowGroupFrame is the frame that maps row groups
+ * (HTML tags THEAD, TFOOT, and TBODY). This class cannot be reused
+ * outside of an nsTableFrame.  It assumes that its parent is an nsTableFrame,
+ * and its children are nsTableRowFrames.
+ *
+ * @see nsTableFrame
+ * @see nsTableRowFrame
+ */
+class nsTableRowGroupFrame final : public nsContainerFrame,
+                                   public nsILineIterator {
+  using TableRowGroupReflowInput = mozilla::TableRowGroupReflowInput;
+
+ public:
+  NS_DECL_QUERYFRAME
+  NS_DECL_FRAMEARENA_HELPERS(nsTableRowGroupFrame)
+
+  /** instantiate a new instance of nsTableRowFrame.
+   * @param aPresShell the pres shell for this frame
+   *
+   * @return           the frame that was created
+   */
+  friend nsTableRowGroupFrame* NS_NewTableRowGroupFrame(
+      mozilla::PresShell* aPresShell, ComputedStyle* aStyle);
+  virtual ~nsTableRowGroupFrame();
+
+  // nsIFrame overrides
+  void Init(nsIContent* aContent, nsContainerFrame* aParent,
+            nsIFrame* aPrevInFlow) override {
+    nsContainerFrame::Init(aContent, aParent, aPrevInFlow);
+    if (!aPrevInFlow) {
+      mWritingMode = GetTableFrame()->GetWritingMode();
+    }
+  }
+
+  void Destroy(DestroyContext&) override;
+
+  /** @see nsIFrame::DidSetComputedStyle */
+  void DidSetComputedStyle(ComputedStyle* aOldComputedStyle) override;
+
+  void AppendFrames(ChildListID aListID, nsFrameList&& aFrameList) override;
+  void InsertFrames(ChildListID aListID, nsIFrame* aPrevFrame,
+                    const nsLineList::iterator* aPrevFrameLine,
+                    nsFrameList&& aFrameList) override;
+  void RemoveFrame(DestroyContext&, ChildListID, nsIFrame*) override;
+
+  nsMargin GetUsedMargin() const override;
+  nsMargin GetUsedBorder() const override;
+  nsMargin GetUsedPadding() const override;
+
+  void BuildDisplayList(nsDisplayListBuilder* aBuilder,
+                        const nsDisplayListSet& aLists) override;
+
+  /**
+   * Calls Reflow for all of its child rows.
+   *
+   * Rows are all set to the same isize and stacked in the block direction.
+   *
+   * Rows are not split unless absolutely necessary.
+   *
+   * @param aDesiredSize isize set to isize of rows, bsize set to
+   *                     sum of bsize of rows that fit in AvailableBSize.
+   *
+   * @see nsIFrame::Reflow
+   */
+  void Reflow(nsPresContext* aPresContext, ReflowOutput& aDesiredSize,
+              const ReflowInput& aReflowInput,
+              nsReflowStatus& aStatus) override;
+
+  bool ComputeCustomOverflow(mozilla::OverflowAreas& aOverflowAreas) override;
+
+#ifdef DEBUG_FRAME_DUMP
+  nsresult GetFrameName(nsAString& aResult) const override;
+#endif
+
+  nsTableRowFrame* GetFirstRow();
+  nsTableRowFrame* GetLastRow();
+
+  nsTableFrame* GetTableFrame() const {
+    nsIFrame* parent = GetParent();
+    MOZ_ASSERT(parent && parent->IsTableFrame());
+    return static_cast<nsTableFrame*>(parent);
+  }
+
+  /** return the number of child rows (not necessarily == number of child
+   * frames) */
+  int32_t GetRowCount() const;
+
+  /** return the table-relative row index of the first row in this rowgroup.
+   * if there are no rows, -1 is returned.
+   */
+  int32_t GetStartRowIndex() const;
+
+  /** Adjust the row indices of all rows  whose index is >= aRowIndex.
+   * @param aRowIndex   - start adjusting with this index
+   * @param aAdjustment - shift the row index by this amount
+   */
+  void AdjustRowIndices(int32_t aRowIndex, int32_t anAdjustment);
+
+  // See nsTableFrame.h
+  int32_t GetAdjustmentForStoredIndex(int32_t aStoredIndex);
+
+  /* mark rows starting from aStartRowFrame to the next 'aNumRowsToRemove-1'
+   * number of rows as deleted
+   */
+  void MarkRowsAsDeleted(nsTableRowFrame& aStartRowFrame,
+                         int32_t aNumRowsToDelete);
+
+  // See nsTableFrame.h
+  void AddDeletedRowIndex(int32_t aDeletedRowStoredIndex);
+
+  /**
+   * Used for header and footer row group frames that are repeated when
+   * splitting a table frame.
+   *
+   * Performs any table specific initialization
+   *
+   * @param aHeaderFooterFrame the original header or footer row group frame
+   * that was repeated
+   */
+  nsresult InitRepeatedFrame(nsTableRowGroupFrame* aHeaderFooterFrame);
+
+  /**
+   * Get the total bsize of all the row rects
+   */
+  nscoord GetBSizeBasis(const ReflowInput& aReflowInput);
+
+  mozilla::LogicalMargin GetBCBorderWidth(mozilla::WritingMode aWM);
+
+  /**
+   * Gets inner border widths before collapsing with cell borders
+   * Caller must get bstart border from previous row group or from table
+   * GetContinuousBCBorderWidth will not overwrite aBorder.BStart()
+   * see nsTablePainter about continuous borders
+   */
+  void GetContinuousBCBorderWidth(mozilla::WritingMode aWM,
+                                  mozilla::LogicalMargin& aBorder);
+
+  /**
+   * Sets full border widths before collapsing with cell borders
+   * @param aForSide - side to set; only IEnd, IStart, BEnd are valid
+   */
+  void SetContinuousBCBorderWidth(mozilla::LogicalSide aForSide,
+                                  BCPixelSize aPixelValue);
+  /**
+   * Adjust to the effect of visibility:collapse on the row group and
+   * its children
+   * @return              additional shift bstart-wards that should be applied
+   *                      to subsequent rowgroups due to rows and this
+   *                      rowgroup being collapsed
+   * @param aBTotalOffset the total amount that the rowgroup is shifted
+   * @param aISize        new isize of the rowgroup
+   * @param aWM           the table's writing mode
+   */
+  nscoord CollapseRowGroupIfNecessary(nscoord aBTotalOffset, nscoord aISize,
+                                      mozilla::WritingMode aWM);
+
+  // nsILineIterator methods
+ public:
+  // The table row is the equivalent to a line in block layout.
+  // The nsILineIterator assumes that a line resides in a block, this role is
+  // fullfilled by the row group. Rows in table are counted relative to the
+  // table. The row index of row corresponds to the cellmap coordinates. The
+  // line index with respect to a row group can be computed by substracting the
+  // row index of the first row in the row group.
+
+  /** Get the number of rows in a row group
+   * @return the number of lines in a row group
+   */
+  int32_t GetNumLines() const final;
+
+  /** @see nsILineIterator.h IsLineIteratorFlowRTL */
+  bool IsLineIteratorFlowRTL() final;
+
+  /** Return structural information about a line. */
+  Result<LineInfo, nsresult> GetLine(int32_t aLineNumber) final;
+
+  /** Given a frame that's a child of the rowgroup, find which line its on.
+   * @param aFrame       - frame, should be a row
+   * @param aStartLine   - minimal index to return
+   * @return               row index relative to the row group if this a row
+   *                       frame and the index is at least aStartLine.
+   *                       -1 if the frame cannot be found.
+   */
+  int32_t FindLineContaining(nsIFrame* aFrame, int32_t aStartLine = 0) final;
+
+  /** Find the orginating cell frame on a row that is the nearest to the
+   * inline-dir coordinate of aPos.
+   * @param aLineNumber        - the index of the row relative to the row group
+   * @param aPos               - coordinate in twips relative to the
+   *                             origin of the row group
+   * @param aFrameFound        - pointer to the cellframe
+   * @param aPosIsBeforeFirstFrame - the point is before the first originating
+   *                               cellframe
+   * @param aPosIsAfterLastFrame   - the point is after the last originating
+   *                               cellframe
+   */
+  NS_IMETHOD FindFrameAt(int32_t aLineNumber, nsPoint aPos,
+                         nsIFrame** aFrameFound, bool* aPosIsBeforeFirstFrame,
+                         bool* aPosIsAfterLastFrame) final;
+
+  /** Check whether visual and logical order of cell frames within a line are
+   * identical. As the layout will reorder them this is always the case
+   * @param aLine        - the index of the row relative to the table
+   * @param aIsReordered - returns false
+   * @param aFirstVisual - if the table is rtl first originating cell frame
+   * @param aLastVisual  - if the table is rtl last originating cell frame
+   */
+
+  NS_IMETHOD CheckLineOrder(int32_t aLine, bool* aIsReordered,
+                            nsIFrame** aFirstVisual,
+                            nsIFrame** aLastVisual) final;
+
+  // row cursor methods to speed up searching for the row(s)
+  // containing a point. The basic idea is that we set the cursor
+  // property if the rows' y and yMosts are non-decreasing (considering only
+  // rows with nonempty overflowAreas --- empty overflowAreas never participate
+  // in event handling or painting), and the rowgroup has sufficient number of
+  // rows. The cursor property points to a "recently used" row. If we get a
+  // series of requests that work on rows "near" the cursor, then we can find
+  // those nearby rows quickly by starting our search at the cursor.
+  // This code is based on the line cursor code in nsBlockFrame. It's more
+  // general though, and could be extracted and used elsewhere.
+  struct FrameCursorData {
+    nsTArray<nsIFrame*> mFrames;
+    uint32_t mCursorIndex;
+    nscoord mOverflowAbove;
+    nscoord mOverflowBelow;
+
+    FrameCursorData()
+        : mFrames(MIN_ROWS_NEEDING_CURSOR),
+          mCursorIndex(0),
+          mOverflowAbove(0),
+          mOverflowBelow(0) {}
+
+    bool AppendFrame(nsIFrame* aFrame);
+
+    void FinishBuildingCursor() { mFrames.Compact(); }
+  };
+
+  // Clear out row cursor because we're disturbing the rows (e.g., Reflow)
+  void ClearRowCursor();
+
+  /**
+   * Get the first row that might contain y-coord 'aY', or nullptr if you must
+   * search all rows.
+   * The actual row returned might not contain 'aY', but if not, it is
+   * guaranteed to be before any row which does contain 'aY'.
+   * aOverflowAbove is the maximum over all rows of -row.GetOverflowRect().y.
+   * To find all rows that intersect the vertical interval aY/aYMost, call
+   * GetFirstRowContaining(aY, &overflowAbove), and then iterate through all
+   * rows until reaching a row where row->GetRect().y - overflowAbove >= aYMost.
+   * That row and all subsequent rows cannot intersect the interval.
+   */
+  nsIFrame* GetFirstRowContaining(nscoord aY, nscoord* aOverflowAbove);
+
+  /**
+   * Set up the row cursor. After this, call AppendFrame for every
+   * child frame in sibling order. Ensure that the child frame y and YMost
+   * values form non-decreasing sequences (should always be true for table
+   * rows); if this is violated, call ClearRowCursor(). If we return nullptr,
+   * then we decided not to use a cursor or we already have one set up.
+   */
+  FrameCursorData* SetupRowCursor();
+
+  bool CanProvideLineIterator() const final { return true; }
+  nsILineIterator* GetLineIterator() final { return this; }
+
+  bool IsFrameOfType(uint32_t aFlags) const override {
+    if (aFlags & (eSupportsContainLayoutAndPaint | eSupportsAspectRatio)) {
+      return false;
+    }
+
+    return nsContainerFrame::IsFrameOfType(aFlags & ~(nsIFrame::eTablePart));
+  }
+
+  void InvalidateFrame(uint32_t aDisplayItemKey = 0,
+                       bool aRebuildDisplayItems = true) override;
+  void InvalidateFrameWithRect(const nsRect& aRect,
+                               uint32_t aDisplayItemKey = 0,
+                               bool aRebuildDisplayItems = true) override;
+  void InvalidateFrameForRemoval() override { InvalidateFrameSubtree(); }
+
+ protected:
+  explicit nsTableRowGroupFrame(ComputedStyle* aStyle,
+                                nsPresContext* aPresContext);
+
+  void InitChildReflowInput(nsPresContext& aPresContext, bool aBorderCollapse,
+                            ReflowInput& aReflowInput);
+
+  LogicalSides GetLogicalSkipSides() const override;
+
+  void PlaceChild(nsPresContext* aPresContext,
+                  TableRowGroupReflowInput& aReflowInput, nsIFrame* aKidFrame,
+                  const ReflowInput& aKidReflowInput, mozilla::WritingMode aWM,
+                  const mozilla::LogicalPoint& aKidPosition,
+                  const nsSize& aContainerSize, ReflowOutput& aDesiredSize,
+                  const nsRect& aOriginalKidRect,
+                  const nsRect& aOriginalKidInkOverflow);
+
+  void CalculateRowBSizes(nsPresContext* aPresContext,
+                          ReflowOutput& aDesiredSize,
+                          const ReflowInput& aReflowInput);
+
+  void DidResizeRows(ReflowOutput& aDesiredSize);
+
+  /**
+   * Reflow the frames we've already created
+   *
+   * @param   aPresContext presentation context to use
+   * @param   aReflowInput current inline state
+   */
+  void ReflowChildren(nsPresContext* aPresContext, ReflowOutput& aDesiredSize,
+                      TableRowGroupReflowInput& aReflowInput,
+                      nsReflowStatus& aStatus,
+                      bool* aPageBreakBeforeEnd = nullptr);
+
+  nsresult SplitRowGroup(nsPresContext* aPresContext,
+                         ReflowOutput& aDesiredSize,
+                         const ReflowInput& aReflowInput,
+                         nsTableFrame* aTableFrame, nsReflowStatus& aStatus,
+                         bool aRowForcedPageBreak);
+
+  void SplitSpanningCells(nsPresContext& aPresContext,
+                          const ReflowInput& aReflowInput,
+                          nsTableFrame& aTableFrame, nsTableRowFrame& aFirstRow,
+                          nsTableRowFrame& aLastRow, bool aFirstRowIsTopOfPage,
+                          nscoord aSpanningRowBottom,
+                          nsTableRowFrame*& aContRowFrame,
+                          nsTableRowFrame*& aFirstTruncatedRow,
+                          nscoord& aDesiredHeight);
+
+  void CreateContinuingRowFrame(nsIFrame& aRowFrame, nsIFrame** aContRowFrame);
+
+  bool IsSimpleRowFrame(nsTableFrame* aTableFrame, nsTableRowFrame* aRowFrame);
+
+  void GetNextRowSibling(nsIFrame** aRowFrame);
+
+  void UndoContinuedRow(nsPresContext* aPresContext, nsTableRowFrame* aRow);
+
+ private:
+  // border widths in pixels in the collapsing border model
+  BCPixelSize mIEndContBorderWidth = 0;
+  BCPixelSize mBEndContBorderWidth = 0;
+  BCPixelSize mIStartContBorderWidth = 0;
+
+ public:
+  bool IsRepeatable() const;
+  void SetRepeatable(bool aRepeatable);
+  bool HasStyleBSize() const;
+  void SetHasStyleBSize(bool aValue);
+  bool HasInternalBreakBefore() const;
+  bool HasInternalBreakAfter() const;
+};
+
+inline bool nsTableRowGroupFrame::IsRepeatable() const {
+  return HasAnyStateBits(NS_ROWGROUP_REPEATABLE);
+}
+
+inline void nsTableRowGroupFrame::SetRepeatable(bool aRepeatable) {
+  if (aRepeatable) {
+    AddStateBits(NS_ROWGROUP_REPEATABLE);
+  } else {
+    RemoveStateBits(NS_ROWGROUP_REPEATABLE);
+  }
+}
+
+inline bool nsTableRowGroupFrame::HasStyleBSize() const {
+  return HasAnyStateBits(NS_ROWGROUP_HAS_STYLE_BSIZE);
+}
+
+inline void nsTableRowGroupFrame::SetHasStyleBSize(bool aValue) {
+  if (aValue) {
+    AddStateBits(NS_ROWGROUP_HAS_STYLE_BSIZE);
+  } else {
+    RemoveStateBits(NS_ROWGROUP_HAS_STYLE_BSIZE);
+  }
+}
+
+inline void nsTableRowGroupFrame::GetContinuousBCBorderWidth(
+    mozilla::WritingMode aWM, mozilla::LogicalMargin& aBorder) {
+  int32_t d2a = PresContext()->AppUnitsPerDevPixel();
+  aBorder.IEnd(aWM) = BC_BORDER_START_HALF_COORD(d2a, mIEndContBorderWidth);
+  aBorder.BEnd(aWM) = BC_BORDER_START_HALF_COORD(d2a, mBEndContBorderWidth);
+  aBorder.IStart(aWM) = BC_BORDER_END_HALF_COORD(d2a, mIStartContBorderWidth);
+}
+#endif