forked from mirrors/gecko-dev
120 lines
4.2 KiB
C++
120 lines
4.2 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/* rendering object for list-item bullets */
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#ifndef nsBulletFrame_h___
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#define nsBulletFrame_h___
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#include "mozilla/Attributes.h"
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#include "nsIFrame.h"
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class imgIContainer;
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class nsBulletFrame;
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class BulletRenderer;
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class nsFontMetrics;
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/**
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* A simple class that manages the layout and rendering of html bullets.
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* This class also supports the CSS list-style properties.
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*/
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class nsBulletFrame final : public nsIFrame {
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typedef mozilla::image::ImgDrawResult ImgDrawResult;
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public:
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NS_DECL_FRAMEARENA_HELPERS(nsBulletFrame)
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#ifdef DEBUG
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NS_DECL_QUERYFRAME
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#endif
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explicit nsBulletFrame(ComputedStyle* aStyle, nsPresContext* aPresContext)
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: nsIFrame(aStyle, aPresContext, kClassID), mPadding(GetWritingMode()) {}
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virtual ~nsBulletFrame();
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// nsIFrame
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void BuildDisplayList(nsDisplayListBuilder*,
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const nsDisplayListSet&) override;
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void DidSetComputedStyle(ComputedStyle* aOldStyle) override;
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#ifdef DEBUG_FRAME_DUMP
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nsresult GetFrameName(nsAString& aResult) const override;
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#endif
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void Reflow(nsPresContext* aPresContext, ReflowOutput& aMetrics,
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const ReflowInput&, nsReflowStatus&) override;
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nscoord GetMinISize(gfxContext*) override;
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nscoord GetPrefISize(gfxContext*) override;
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void AddInlineMinISize(gfxContext*, nsIFrame::InlineMinISizeData*) override;
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void AddInlinePrefISize(gfxContext*, nsIFrame::InlinePrefISizeData*) override;
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bool IsFrameOfType(uint32_t aFlags) const override {
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if (aFlags & (eSupportsCSSTransforms | eSupportsContainLayoutAndPaint)) {
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return false;
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}
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return nsIFrame::IsFrameOfType(aFlags & ~nsIFrame::eLineParticipant);
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}
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// nsBulletFrame
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/* get list item text, with prefix & suffix */
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static void GetListItemText(mozilla::CounterStyle*, mozilla::WritingMode,
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int32_t aOrdinal, nsAString& aResult);
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#ifdef ACCESSIBILITY
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void GetSpokenText(nsAString& aText);
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#endif
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Maybe<BulletRenderer> CreateBulletRenderer(gfxContext& aRenderingContext,
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nsDisplayListBuilder* aBuilder,
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nsPoint aPt,
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ImgDrawResult* aOutDrawResult);
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ImgDrawResult PaintBullet(gfxContext& aRenderingContext,
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nsDisplayListBuilder* aBuilder, nsPoint aPt,
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const nsRect& aDirtyRect, bool aDisableSubpixelAA);
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bool IsEmpty() override;
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bool IsSelfEmpty() override;
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// XXXmats note that this method returns a non-standard baseline that includes
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// the ::marker block-start margin. New code should probably use
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// GetNaturalBaselineBOffset instead, which returns a normal baseline offset
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// as documented in nsIFrame.h.
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nscoord GetLogicalBaseline(mozilla::WritingMode aWritingMode) const override;
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bool GetNaturalBaselineBOffset(mozilla::WritingMode aWM,
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BaselineSharingGroup aBaselineGroup,
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nscoord* aBaseline) const override;
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float GetFontSizeInflation() const;
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bool HasFontSizeInflation() const {
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return HasAnyStateBits(BULLET_FRAME_HAS_FONT_INFLATION);
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}
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void SetFontSizeInflation(float aInflation);
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int32_t Ordinal() const { return mOrdinal; }
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void SetOrdinal(int32_t aOrdinal, bool aNotify);
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already_AddRefed<imgIContainer> GetImage() const;
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protected:
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void AppendSpacingToPadding(nsFontMetrics* aFontMetrics,
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mozilla::LogicalMargin* aPadding);
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void GetDesiredSize(nsPresContext* aPresContext,
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gfxContext* aRenderingContext, ReflowOutput& aMetrics,
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float aFontSizeInflation,
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mozilla::LogicalMargin* aPadding);
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mozilla::LogicalMargin mPadding;
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private:
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mozilla::CounterStyle* ResolveCounterStyle();
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nscoord GetListStyleAscent() const;
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// Requires being set via SetOrdinal.
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int32_t mOrdinal = 0;
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};
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#endif /* nsBulletFrame_h___ */
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