Adding upstream version 115.7.0esr.upstream/115.7.0esr

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

1 files changed, 220 insertions, 0 deletions

diff --git a/layout/generic/nsInlineFrame.h b/layout/generic/nsInlineFrame.h
new file mode 100644
index 0000000000..9cb63c4016
--- /dev/null
+++ b/layout/generic/nsInlineFrame.h
@@ -0,0 +1,220 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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/. */
+
+/* rendering object for CSS display:inline objects */
+
+#ifndef nsInlineFrame_h___
+#define nsInlineFrame_h___
+
+#include "mozilla/Attributes.h"
+#include "nsContainerFrame.h"
+
+class nsLineLayout;
+
+namespace mozilla {
+class PresShell;
+}  // namespace mozilla
+
+/**
+ * Inline frame class.
+ *
+ * This class manages a list of child frames that are inline frames. Working
+ * with nsLineLayout, the class will reflow and place inline frames on a line.
+ */
+class nsInlineFrame : public nsContainerFrame {
+ public:
+  NS_DECL_QUERYFRAME
+  NS_DECL_FRAMEARENA_HELPERS(nsInlineFrame)
+
+  friend nsInlineFrame* NS_NewInlineFrame(mozilla::PresShell* aPresShell,
+                                          ComputedStyle* aStyle);
+
+  // nsIFrame overrides
+  virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
+                                const nsDisplayListSet& aLists) override;
+
+#ifdef ACCESSIBILITY
+  virtual mozilla::a11y::AccType AccessibleType() override;
+#endif
+
+#ifdef DEBUG_FRAME_DUMP
+  virtual nsresult GetFrameName(nsAString& aResult) const override;
+#endif
+
+  virtual bool IsFrameOfType(uint32_t aFlags) const override {
+    if (aFlags & (eSupportsCSSTransforms | eSupportsContainLayoutAndPaint |
+                  eSupportsAspectRatio)) {
+      return false;
+    }
+    return nsContainerFrame::IsFrameOfType(
+        aFlags &
+        ~(nsIFrame::eBidiInlineContainer | nsIFrame::eLineParticipant));
+  }
+
+  virtual void InvalidateFrame(uint32_t aDisplayItemKey = 0,
+                               bool aRebuildDisplayItems = true) override;
+  virtual void InvalidateFrameWithRect(
+      const nsRect& aRect, uint32_t aDisplayItemKey = 0,
+      bool aRebuildDisplayItems = true) override;
+
+  virtual bool IsEmpty() override;
+  virtual bool IsSelfEmpty() override;
+
+  virtual FrameSearchResult PeekOffsetCharacter(
+      bool aForward, int32_t* aOffset,
+      PeekOffsetCharacterOptions aOptions =
+          PeekOffsetCharacterOptions()) override;
+
+  void Destroy(DestroyContext&) override;
+
+  void StealFrame(nsIFrame* aChild) override;
+
+  // nsIHTMLReflow overrides
+  virtual void AddInlineMinISize(gfxContext* aRenderingContext,
+                                 InlineMinISizeData* aData) override;
+  virtual void AddInlinePrefISize(gfxContext* aRenderingContext,
+                                  InlinePrefISizeData* aData) override;
+  SizeComputationResult ComputeSize(
+      gfxContext* aRenderingContext, mozilla::WritingMode aWM,
+      const mozilla::LogicalSize& aCBSize, nscoord aAvailableISize,
+      const mozilla::LogicalSize& aMargin,
+      const mozilla::LogicalSize& aBorderPadding,
+      const mozilla::StyleSizeOverrides& aSizeOverrides,
+      mozilla::ComputeSizeFlags aFlags) override;
+  virtual nsRect ComputeTightBounds(DrawTarget* aDrawTarget) const override;
+  virtual void Reflow(nsPresContext* aPresContext, ReflowOutput& aDesiredSize,
+                      const ReflowInput& aReflowInput,
+                      nsReflowStatus& aStatus) override;
+
+  virtual nsresult AttributeChanged(int32_t aNameSpaceID, nsAtom* aAttribute,
+                                    int32_t aModType) override;
+
+  virtual bool CanContinueTextRun() const override;
+
+  virtual void PullOverflowsFromPrevInFlow() override;
+
+  Maybe<nscoord> GetNaturalBaselineBOffset(
+      mozilla::WritingMode aWM, BaselineSharingGroup aBaselineGroup,
+      BaselineExportContext) const override;
+  virtual bool DrainSelfOverflowList() override;
+
+  /**
+   * Return true if the frame is first visual frame or first continuation
+   */
+  bool IsFirst() const {
+    // If the frame's bidi visual state is set, return is-first state
+    // else return true if it's the first continuation.
+    return HasAnyStateBits(NS_INLINE_FRAME_BIDI_VISUAL_STATE_IS_SET)
+               ? HasAnyStateBits(NS_INLINE_FRAME_BIDI_VISUAL_IS_FIRST)
+               : !GetPrevInFlow();
+  }
+
+  /**
+   * Return true if the frame is last visual frame or last continuation.
+   */
+  bool IsLast() const {
+    // If the frame's bidi visual state is set, return is-last state
+    // else return true if it's the last continuation.
+    return HasAnyStateBits(NS_INLINE_FRAME_BIDI_VISUAL_STATE_IS_SET)
+               ? HasAnyStateBits(NS_INLINE_FRAME_BIDI_VISUAL_IS_LAST)
+               : !GetNextInFlow();
+  }
+
+  // Restyles the block wrappers around our non-inline-outside kids.
+  // This will only be called when such wrappers in fact exist.
+  void UpdateStyleOfOwnedAnonBoxesForIBSplit(
+      mozilla::ServoRestyleState& aRestyleState);
+
+ protected:
+  // Additional reflow input used during our reflow methods
+  struct InlineReflowInput {
+    nsIFrame* mPrevFrame;
+    nsInlineFrame* mNextInFlow;
+    nsIFrame* mLineContainer;
+    nsLineLayout* mLineLayout;
+    bool mSetParentPointer;  // when reflowing child frame first set its
+                             // parent frame pointer
+
+    InlineReflowInput() {
+      mPrevFrame = nullptr;
+      mNextInFlow = nullptr;
+      mLineContainer = nullptr;
+      mLineLayout = nullptr;
+      mSetParentPointer = false;
+    }
+  };
+
+  nsInlineFrame(ComputedStyle* aStyle, nsPresContext* aPresContext, ClassID aID)
+      : nsContainerFrame(aStyle, aPresContext, aID),
+        mBaseline(NS_INTRINSIC_ISIZE_UNKNOWN) {}
+
+  LogicalSides GetLogicalSkipSides() const override;
+
+  void ReflowFrames(nsPresContext* aPresContext,
+                    const ReflowInput& aReflowInput, InlineReflowInput& rs,
+                    ReflowOutput& aMetrics, nsReflowStatus& aStatus);
+
+  void ReflowInlineFrame(nsPresContext* aPresContext,
+                         const ReflowInput& aReflowInput, InlineReflowInput& rs,
+                         nsIFrame* aFrame, nsReflowStatus& aStatus);
+
+  // Returns whether there's any frame that PullOneFrame would pull from
+  // aNextInFlow or any of aNextInFlow's next-in-flows.
+  static bool HasFramesToPull(nsInlineFrame* aNextInFlow);
+
+  virtual nsIFrame* PullOneFrame(nsPresContext*, InlineReflowInput&);
+
+  virtual void PushFrames(nsPresContext* aPresContext, nsIFrame* aFromChild,
+                          nsIFrame* aPrevSibling, InlineReflowInput& aState);
+
+ private:
+  explicit nsInlineFrame(ComputedStyle* aStyle, nsPresContext* aPresContext)
+      : nsInlineFrame(aStyle, aPresContext, kClassID) {}
+
+  /**
+   * Move any frames on our overflow list to the end of our principal list.
+   * @param aInFirstLine whether we're in a first-line frame.
+   * @return true if there were any overflow frames
+   */
+  bool DrainSelfOverflowListInternal(bool aInFirstLine);
+
+ protected:
+  nscoord mBaseline;
+};
+
+//----------------------------------------------------------------------
+
+/**
+ * Variation on inline-frame used to manage lines for line layout in
+ * special situations (:first-line style in particular).
+ */
+class nsFirstLineFrame final : public nsInlineFrame {
+ public:
+  NS_DECL_FRAMEARENA_HELPERS(nsFirstLineFrame)
+
+  friend nsFirstLineFrame* NS_NewFirstLineFrame(mozilla::PresShell* aPresShell,
+                                                ComputedStyle* aStyle);
+
+#ifdef DEBUG_FRAME_DUMP
+  virtual nsresult GetFrameName(nsAString& aResult) const override;
+#endif
+  virtual void Reflow(nsPresContext* aPresContext, ReflowOutput& aDesiredSize,
+                      const ReflowInput& aReflowInput,
+                      nsReflowStatus& aStatus) override;
+
+  virtual void Init(nsIContent* aContent, nsContainerFrame* aParent,
+                    nsIFrame* aPrevInFlow) override;
+  virtual void PullOverflowsFromPrevInFlow() override;
+  virtual bool DrainSelfOverflowList() override;
+
+ protected:
+  explicit nsFirstLineFrame(ComputedStyle* aStyle, nsPresContext* aPresContext)
+      : nsInlineFrame(aStyle, aPresContext, kClassID) {}
+
+  nsIFrame* PullOneFrame(nsPresContext*, InlineReflowInput&) override;
+};
+
+#endif /* nsInlineFrame_h___ */