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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);
void BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsDisplayListSet& aLists) override;
#ifdef ACCESSIBILITY
mozilla::a11y::AccType AccessibleType() override;
#endif
#ifdef DEBUG_FRAME_DUMP
nsresult GetFrameName(nsAString& aResult) const override;
#endif
void InvalidateFrame(uint32_t aDisplayItemKey = 0,
bool aRebuildDisplayItems = true) override;
void InvalidateFrameWithRect(const nsRect& aRect,
uint32_t aDisplayItemKey = 0,
bool aRebuildDisplayItems = true) override;
bool IsEmpty() override;
bool IsSelfEmpty() override;
nscoord GetCaretBaseline() const override;
FrameSearchResult PeekOffsetCharacter(
bool aForward, int32_t* aOffset,
PeekOffsetCharacterOptions aOptions =
PeekOffsetCharacterOptions()) override;
void Destroy(DestroyContext&) override;
void StealFrame(nsIFrame* aChild) override;
void AddInlineMinISize(const mozilla::IntrinsicSizeInput& aInput,
InlineMinISizeData* aData) override;
void AddInlinePrefISize(const mozilla::IntrinsicSizeInput& aInput,
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;
nsRect ComputeTightBounds(DrawTarget* aDrawTarget) const override;
void Reflow(nsPresContext* aPresContext, ReflowOutput& aReflowOutput,
const ReflowInput& aReflowInput,
nsReflowStatus& aStatus) override;
nsresult AttributeChanged(int32_t aNameSpaceID, nsAtom* aAttribute,
int32_t aModType) override;
bool CanContinueTextRun() const override;
void PullOverflowsFromPrevInFlow() override;
Maybe<nscoord> GetNaturalBaselineBOffset(
mozilla::WritingMode aWM, BaselineSharingGroup aBaselineGroup,
BaselineExportContext) const override;
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
nsresult GetFrameName(nsAString& aResult) const override;
#endif
void Reflow(nsPresContext* aPresContext, ReflowOutput& aReflowOutput,
const ReflowInput& aReflowInput,
nsReflowStatus& aStatus) override;
void Init(nsIContent* aContent, nsContainerFrame* aParent,
nsIFrame* aPrevInFlow) override;
void PullOverflowsFromPrevInFlow() override;
bool DrainSelfOverflowList() override;
protected:
explicit nsFirstLineFrame(ComputedStyle* aStyle, nsPresContext* aPresContext)
: nsInlineFrame(aStyle, aPresContext, kClassID) {}
nsIFrame* PullOneFrame(nsPresContext*, InlineReflowInput&) override;
};
#endif /* nsInlineFrame_h___ */
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