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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 01:47:29 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-19 01:47:29 +0000 |
commit | 0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d (patch) | |
tree | a31f07c9bcca9d56ce61e9a1ffd30ef350d513aa /layout/generic/nsFirstLetterFrame.h | |
parent | Initial commit. (diff) | |
download | firefox-esr-0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d.tar.xz firefox-esr-0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d.zip |
Adding upstream version 115.8.0esr.upstream/115.8.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'layout/generic/nsFirstLetterFrame.h')
-rw-r--r-- | layout/generic/nsFirstLetterFrame.h | 93 |
1 files changed, 93 insertions, 0 deletions
diff --git a/layout/generic/nsFirstLetterFrame.h b/layout/generic/nsFirstLetterFrame.h new file mode 100644 index 0000000000..4a099ebf3f --- /dev/null +++ b/layout/generic/nsFirstLetterFrame.h @@ -0,0 +1,93 @@ +/* -*- 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/. */ + +#ifndef nsFirstLetterFrame_h__ +#define nsFirstLetterFrame_h__ + +/* rendering object for CSS :first-letter pseudo-element */ + +#include "mozilla/Attributes.h" +#include "nsContainerFrame.h" + +class nsFirstLetterFrame final : public nsContainerFrame { + public: + NS_DECL_QUERYFRAME + NS_DECL_FRAMEARENA_HELPERS(nsFirstLetterFrame) + + explicit nsFirstLetterFrame(ComputedStyle* aStyle, + nsPresContext* aPresContext) + : nsContainerFrame(aStyle, aPresContext, kClassID) {} + + virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder, + const nsDisplayListSet& aLists) override; + + virtual void Init(nsIContent* aContent, nsContainerFrame* aParent, + nsIFrame* aPrevInFlow) override; + void SetInitialChildList(ChildListID aListID, + nsFrameList&& aChildList) override; +#ifdef DEBUG_FRAME_DUMP + virtual nsresult GetFrameName(nsAString& aResult) const override; +#endif + + bool IsFloating() const { return HasAnyStateBits(NS_FRAME_OUT_OF_FLOW); } + + virtual bool IsFrameOfType(uint32_t aFlags) const override { + if (!IsFloating()) aFlags = aFlags & ~(nsIFrame::eLineParticipant); + return nsContainerFrame::IsFrameOfType(aFlags & + ~(nsIFrame::eBidiInlineContainer)); + } + + virtual nscoord GetMinISize(gfxContext* aRenderingContext) override; + virtual nscoord GetPrefISize(gfxContext* aRenderingContext) override; + 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 void Reflow(nsPresContext* aPresContext, ReflowOutput& aDesiredSize, + const ReflowInput& aReflowInput, + nsReflowStatus& aStatus) override; + + virtual bool CanContinueTextRun() const override; + Maybe<nscoord> GetNaturalBaselineBOffset( + mozilla::WritingMode aWM, BaselineSharingGroup aBaselineGroup, + BaselineExportContext) const override; + virtual LogicalSides GetLogicalSkipSides() const override; + + // override of nsFrame method + virtual nsresult GetChildFrameContainingOffset( + int32_t inContentOffset, bool inHint, int32_t* outFrameContentOffset, + nsIFrame** outChildFrame) override; + + nscoord GetFirstLetterBaseline() const { return mBaseline; } + + // For floating first letter frames, create a continuation for aChild and + // place it in the correct place. aContinuation is an outparam for the + // continuation that is created. aIsFluid determines if the continuation is + // fluid or not. + void CreateContinuationForFloatingParent(nsIFrame* aChild, + nsIFrame** aContinuation, + bool aIsFluid); + + // Whether to use tight glyph bounds for a floating first-letter frame, + // or "loose" bounds based on font metrics rather than individual glyphs. + bool UseTightBounds() const; + + protected: + nscoord mBaseline; + + void DrainOverflowFrames(nsPresContext* aPresContext); +}; + +#endif /* nsFirstLetterFrame_h__ */ |