1 files changed, 334 insertions, 0 deletions
diff --git a/layout/tables/nsTableCellFrame.h b/layout/tables/nsTableCellFrame.h
new file mode 100644
index 0000000000..f9b6f3ccac
--- /dev/null
+++ b/layout/tables/nsTableCellFrame.h
@@ -0,0 +1,334 @@
+/* -*- 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 nsTableCellFrame_h__
+#define nsTableCellFrame_h__
+
+#include "mozilla/Attributes.h"
+#include "celldata.h"
+#include "nsITableCellLayout.h"
+#include "nscore.h"
+#include "nsContainerFrame.h"
+#include "mozilla/ComputedStyle.h"
+#include "nsIPercentBSizeObserver.h"
+#include "nsTArray.h"
+#include "nsTableRowFrame.h"
+#include "mozilla/WritingModes.h"
+
+namespace mozilla {
+class PresShell;
+}  // namespace mozilla
+
+/**
+ * nsTableCellFrame
+ * data structure to maintain information about a single table cell's frame
+ *
+ * NOTE:  frames are not ref counted.  We expose addref and release here
+ * so we can change that decsion in the future.  Users of nsITableCellLayout
+ * should refcount correctly as if this object is being ref counted, though
+ * no actual support is under the hood.
+ *
+ * @author  sclark
+ */
+class nsTableCellFrame : public nsContainerFrame,
+                         public nsITableCellLayout,
+                         public nsIPercentBSizeObserver {
+  typedef mozilla::gfx::DrawTarget DrawTarget;
+  typedef mozilla::image::ImgDrawResult ImgDrawResult;
+
+  friend nsTableCellFrame* NS_NewTableCellFrame(mozilla::PresShell* aPresShell,
+                                                ComputedStyle* aStyle,
+                                                nsTableFrame* aTableFrame);
+
+  nsTableCellFrame(ComputedStyle* aStyle, nsTableFrame* aTableFrame)
+      : nsTableCellFrame(aStyle, aTableFrame, kClassID) {}
+
+ protected:
+  typedef mozilla::WritingMode WritingMode;
+  typedef mozilla::LogicalSide LogicalSide;
+  typedef mozilla::LogicalMargin LogicalMargin;
+
+ public:
+  NS_DECL_QUERYFRAME
+  NS_DECL_FRAMEARENA_HELPERS(nsTableCellFrame)
+
+  nsIScrollableFrame* GetScrollTargetFrame() const final;
+
+  nsTableRowFrame* GetTableRowFrame() const {
+    nsIFrame* parent = GetParent();
+    MOZ_ASSERT(parent && parent->IsTableRowFrame());
+    return static_cast<nsTableRowFrame*>(parent);
+  }
+
+  nsTableFrame* GetTableFrame() const {
+    return GetTableRowFrame()->GetTableFrame();
+  }
+
+  void Init(nsIContent* aContent, nsContainerFrame* aParent,
+            nsIFrame* aPrevInFlow) override;
+
+  void Destroy(DestroyContext&) override;
+
+#ifdef ACCESSIBILITY
+  mozilla::a11y::AccType AccessibleType() override;
+#endif
+
+  nsresult AttributeChanged(int32_t aNameSpaceID, nsAtom* aAttribute,
+                            int32_t aModType) override;
+
+  /** @see nsIFrame::DidSetComputedStyle */
+  void DidSetComputedStyle(ComputedStyle* aOldComputedStyle) override;
+
+#ifdef DEBUG
+  // Our anonymous block frame is the content insertion frame so these
+  // methods should never be called:
+  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;
+#endif
+
+  nsContainerFrame* GetContentInsertionFrame() override {
+    return PrincipalChildList().FirstChild()->GetContentInsertionFrame();
+  }
+
+  nsIFrame* CellContentFrame() const;
+
+  nsMargin GetUsedMargin() const override;
+
+  void NotifyPercentBSize(const ReflowInput& aReflowInput) override;
+
+  bool NeedsToObserve(const ReflowInput& aReflowInput) override;
+
+  void BuildDisplayList(nsDisplayListBuilder* aBuilder,
+                        const nsDisplayListSet& aLists) override;
+
+  virtual void ProcessBorders(nsTableFrame* aFrame,
+                              nsDisplayListBuilder* aBuilder,
+                              const nsDisplayListSet& aLists);
+
+  nscoord GetMinISize(gfxContext* aRenderingContext) override;
+  nscoord GetPrefISize(gfxContext* aRenderingContext) override;
+  IntrinsicSizeOffsetData IntrinsicISizeOffsets(
+      nscoord aPercentageBasis = NS_UNCONSTRAINEDSIZE) override;
+
+  void Reflow(nsPresContext* aPresContext, ReflowOutput& aDesiredSize,
+              const ReflowInput& aReflowInput,
+              nsReflowStatus& aStatus) override;
+
+#ifdef DEBUG_FRAME_DUMP
+  nsresult GetFrameName(nsAString& aResult) const override;
+#endif
+
+  void BlockDirAlignChild(mozilla::WritingMode aWM, nscoord aMaxAscent);
+
+  /*
+   * Get the value of vertical-align adjusted for CSS 2's rules for a
+   * table cell, which means the result is always
+   * StyleVerticalAlignKeyword::{Top,Middle,Bottom,Baseline}.
+   */
+  virtual mozilla::StyleVerticalAlignKeyword GetVerticalAlign() const;
+
+  bool HasVerticalAlignBaseline() const {
+    return GetVerticalAlign() == mozilla::StyleVerticalAlignKeyword::Baseline &&
+           !GetContentEmpty();
+  }
+
+  /**
+   * Get the first-line baseline of the cell relative to its block-start border
+   * edge, as if the cell were vertically aligned to the top of the row.
+   */
+  nscoord GetCellBaseline() const;
+
+  /**
+   * return the cell's specified row span. this is what was specified in the
+   * content model or in the style info, and is always >= 0.
+   * to get the effective row span (the actual value that applies), use
+   * GetEffectiveRowSpan()
+   * @see nsTableFrame::GetEffectiveRowSpan()
+   */
+  int32_t GetRowSpan();
+
+  // there is no set row index because row index depends on the cell's parent
+  // row only
+
+  // Return our cell content frame.
+  void AppendDirectlyOwnedAnonBoxes(nsTArray<OwnedAnonBox>& aResult) override;
+
+  /*---------------- nsITableCellLayout methods ------------------------*/
+
+  /**
+   * return the cell's starting row index (starting at 0 for the first row).
+   * for continued cell frames the row index is that of the cell's first-in-flow
+   * and the column index (starting at 0 for the first column
+   */
+  NS_IMETHOD GetCellIndexes(int32_t& aRowIndex, int32_t& aColIndex) override;
+
+  /** return the mapped cell's row index (starting at 0 for the first row) */
+  uint32_t RowIndex() const {
+    return static_cast<nsTableRowFrame*>(GetParent())->GetRowIndex();
+  }
+
+  /**
+   * return the cell's specified col span. this is what was specified in the
+   * content model or in the style info, and is always >= 1.
+   * to get the effective col span (the actual value that applies), use
+   * GetEffectiveColSpan()
+   * @see nsTableFrame::GetEffectiveColSpan()
+   */
+  int32_t GetColSpan();
+
+  /** return the cell's column index (starting at 0 for the first column) */
+  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 */
+  inline nscoord GetPriorAvailISize();
+
+  /** set the available isize given to this frame during its last reflow */
+  inline void SetPriorAvailISize(nscoord aPriorAvailISize);
+
+  /** return the desired size returned by this frame during its last reflow */
+  inline mozilla::LogicalSize GetDesiredSize();
+
+  /** set the desired size returned by this frame during its last reflow */
+  inline void SetDesiredSize(const ReflowOutput& aDesiredSize);
+
+  bool GetContentEmpty() const;
+  void SetContentEmpty(bool aContentEmpty);
+
+  nsTableCellFrame* GetNextCell() const {
+    nsIFrame* sibling = GetNextSibling();
+    MOZ_ASSERT(
+        !sibling || static_cast<nsTableCellFrame*>(do_QueryFrame(sibling)),
+        "How do we have a non-cell sibling?");
+    return static_cast<nsTableCellFrame*>(sibling);
+  }
+
+  virtual LogicalMargin GetBorderWidth(WritingMode aWM) const;
+
+  void DecorateForSelection(DrawTarget* aDrawTarget, nsPoint aPt);
+
+  bool ComputeCustomOverflow(mozilla::OverflowAreas& aOverflowAreas) override;
+
+  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(); }
+
+  bool ShouldPaintBordersAndBackgrounds() const;
+
+  bool ShouldPaintBackground(nsDisplayListBuilder* aBuilder);
+
+ protected:
+  nsTableCellFrame(ComputedStyle* aStyle, nsTableFrame* aTableFrame,
+                   ClassID aID);
+  ~nsTableCellFrame();
+
+  LogicalSides GetLogicalSkipSides() const override;
+
+  /**
+   * GetBorderOverflow says how far the cell's own borders extend
+   * outside its own bounds.  In the separated borders model this should
+   * just be zero (as it is for most frames), but in the collapsed
+   * borders model (for which nsBCTableCellFrame overrides this virtual
+   * method), it considers the extents of the collapsed border.
+   */
+  virtual nsMargin GetBorderOverflow();
+
+  friend class nsTableRowFrame;
+
+  uint32_t mColIndex;  // the starting column for this cell
+
+  nscoord mPriorAvailISize;           // the avail isize during the last reflow
+  mozilla::LogicalSize mDesiredSize;  // the last desired inline and block size
+};
+
+inline nscoord nsTableCellFrame::GetPriorAvailISize() {
+  return mPriorAvailISize;
+}
+
+inline void nsTableCellFrame::SetPriorAvailISize(nscoord aPriorAvailISize) {
+  mPriorAvailISize = aPriorAvailISize;
+}
+
+inline mozilla::LogicalSize nsTableCellFrame::GetDesiredSize() {
+  return mDesiredSize;
+}
+
+inline void nsTableCellFrame::SetDesiredSize(const ReflowOutput& aDesiredSize) {
+  mDesiredSize = aDesiredSize.Size(GetWritingMode());
+}
+
+inline bool nsTableCellFrame::GetContentEmpty() const {
+  return HasAnyStateBits(NS_TABLE_CELL_CONTENT_EMPTY);
+}
+
+inline void nsTableCellFrame::SetContentEmpty(bool aContentEmpty) {
+  if (aContentEmpty) {
+    AddStateBits(NS_TABLE_CELL_CONTENT_EMPTY);
+  } else {
+    RemoveStateBits(NS_TABLE_CELL_CONTENT_EMPTY);
+  }
+}
+
+// nsBCTableCellFrame
+class nsBCTableCellFrame final : public nsTableCellFrame {
+  typedef mozilla::image::ImgDrawResult ImgDrawResult;
+
+ public:
+  NS_DECL_FRAMEARENA_HELPERS(nsBCTableCellFrame)
+
+  nsBCTableCellFrame(ComputedStyle* aStyle, nsTableFrame* aTableFrame);
+
+  ~nsBCTableCellFrame();
+
+  nsMargin GetUsedBorder() const override;
+
+  // Get the *inner half of the border only*, in twips.
+  LogicalMargin GetBorderWidth(WritingMode aWM) const override;
+
+  // Get the *inner half of the border only*, in pixels.
+  BCPixelSize GetBorderWidth(LogicalSide aSide) const;
+
+  // Set the full (both halves) width of the border
+  void SetBorderWidth(LogicalSide aSide, BCPixelSize aPixelValue);
+
+  nsMargin GetBorderOverflow() override;
+
+#ifdef DEBUG_FRAME_DUMP
+  nsresult GetFrameName(nsAString& aResult) const override;
+#endif
+
+ private:
+  // These are the entire width of the border (the cell edge contains only
+  // the inner half).
+  BCPixelSize mBStartBorder;
+  BCPixelSize mIEndBorder;
+  BCPixelSize mBEndBorder;
+  BCPixelSize mIStartBorder;
+};
+
+// Implemented here because that's a sane-ish way to make the includes work out.
+inline nsTableCellFrame* nsTableRowFrame::GetFirstCell() const {
+  nsIFrame* firstChild = mFrames.FirstChild();
+  MOZ_ASSERT(
+      !firstChild || static_cast<nsTableCellFrame*>(do_QueryFrame(firstChild)),
+      "How do we have a non-cell child?");
+  return static_cast<nsTableCellFrame*>(firstChild);
+}
+
+#endif