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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 */
/* rendering object for list-item bullets */
#ifndef nsBulletFrame_h___
#define nsBulletFrame_h___
#include "mozilla/Attributes.h"
#include "nsIFrame.h"
class imgIContainer;
class nsBulletFrame;
class nsFontMetrics;
class BulletRenderer;
class nsFontMetrics;
* A simple class that manages the layout and rendering of html bullets.
* This class also supports the CSS list-style properties.
class nsBulletFrame final : public nsIFrame {
typedef mozilla::image::ImgDrawResult ImgDrawResult;
#ifdef DEBUG
explicit nsBulletFrame(ComputedStyle* aStyle, nsPresContext* aPresContext)
: nsIFrame(aStyle, aPresContext, kClassID), mPadding(GetWritingMode()) {}
virtual ~nsBulletFrame();
// nsIFrame
void BuildDisplayList(nsDisplayListBuilder*,
const nsDisplayListSet&) override;
void DidSetComputedStyle(ComputedStyle* aOldStyle) override;
nsresult GetFrameName(nsAString& aResult) const override;
void Reflow(nsPresContext* aPresContext, ReflowOutput& aMetrics,
const ReflowInput&, nsReflowStatus&) override;
nscoord GetMinISize(gfxContext*) override;
nscoord GetPrefISize(gfxContext*) override;
void AddInlineMinISize(gfxContext*, nsIFrame::InlineMinISizeData*) override;
void AddInlinePrefISize(gfxContext*, nsIFrame::InlinePrefISizeData*) override;
bool IsFrameOfType(uint32_t aFlags) const override {
if (aFlags & (eSupportsCSSTransforms | eSupportsContainLayoutAndPaint)) {
return false;
return nsIFrame::IsFrameOfType(aFlags & ~nsIFrame::eLineParticipant);
// nsBulletFrame
/* get list item text, with prefix & suffix */
static void GetListItemText(mozilla::CounterStyle*, mozilla::WritingMode,
int32_t aOrdinal, nsAString& aResult);
void GetSpokenText(nsAString& aText);
Maybe<BulletRenderer> CreateBulletRenderer(gfxContext& aRenderingContext,
nsDisplayListBuilder* aBuilder,
nsPoint aPt,
ImgDrawResult* aOutDrawResult);
ImgDrawResult PaintBullet(gfxContext& aRenderingContext,
nsDisplayListBuilder* aBuilder, nsPoint aPt,
const nsRect& aDirtyRect, bool aDisableSubpixelAA);
bool IsEmpty() override;
bool IsSelfEmpty() override;
// XXXmats note that this method returns a non-standard baseline that includes
// the ::marker block-start margin. New code should probably use
// GetNaturalBaselineBOffset instead, which returns a normal baseline offset
// as documented in nsIFrame.h.
nscoord GetLogicalBaseline(mozilla::WritingMode aWritingMode) const override;
bool GetNaturalBaselineBOffset(mozilla::WritingMode aWM,
BaselineSharingGroup aBaselineGroup,
nscoord* aBaseline) const override;
float GetFontSizeInflation() const;
bool HasFontSizeInflation() const {
void SetFontSizeInflation(float aInflation);
int32_t Ordinal() const { return mOrdinal; }
void SetOrdinal(int32_t aOrdinal, bool aNotify);
already_AddRefed<imgIContainer> GetImage() const;
void AppendSpacingToPadding(nsFontMetrics* aFontMetrics,
mozilla::LogicalMargin* aPadding);
void GetDesiredSize(nsPresContext* aPresContext,
gfxContext* aRenderingContext, ReflowOutput& aMetrics,
float aFontSizeInflation,
mozilla::LogicalMargin* aPadding);
mozilla::LogicalMargin mPadding;
mozilla::CounterStyle* ResolveCounterStyle();
nscoord GetListStyleAscent() const;
// Requires being set via SetOrdinal.
int32_t mOrdinal = 0;
#endif /* nsBulletFrame_h___ */