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+/* -*- 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___ */