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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 list-item bullets */
#ifndef nsBulletFrame_h___
#define nsBulletFrame_h___
#include "mozilla/Attributes.h"
#include "nsIFrame.h"
#include "imgIContainer.h"
#include "imgINotificationObserver.h"
class imgIContainer;
class imgRequestProxy;
class nsBulletFrame;
class BulletRenderer;
class nsFontMetrics;
class nsBulletListener final : public imgINotificationObserver {
public:
nsBulletListener();
NS_DECL_ISUPPORTS
NS_DECL_IMGINOTIFICATIONOBSERVER
void SetFrame(nsBulletFrame* frame) { mFrame = frame; }
private:
virtual ~nsBulletListener();
nsBulletFrame* mFrame;
};
/**
* 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;
public:
NS_DECL_FRAMEARENA_HELPERS(nsBulletFrame)
#ifdef DEBUG
NS_DECL_QUERYFRAME
#endif
explicit nsBulletFrame(ComputedStyle* aStyle, nsPresContext* aPresContext)
: nsIFrame(aStyle, aPresContext, kClassID),
mPadding(GetWritingMode()),
mIntrinsicSize(GetWritingMode()),
mRequestRegistered(false) {}
virtual ~nsBulletFrame();
void Notify(imgIRequest* aRequest, int32_t aType, const nsIntRect* aData);
// nsIFrame
virtual void DestroyFrom(nsIFrame* aDestructRoot,
PostDestroyData& aPostDestroyData) override;
virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsDisplayListSet& aLists) override;
virtual void DidSetComputedStyle(ComputedStyle* aOldComputedStyle) override;
#ifdef DEBUG_FRAME_DUMP
virtual nsresult GetFrameName(nsAString& aResult) const override;
#endif
virtual void Reflow(nsPresContext* aPresContext, ReflowOutput& aMetrics,
const ReflowInput& aReflowInput,
nsReflowStatus& aStatus) override;
virtual nscoord GetMinISize(gfxContext* aRenderingContext) override;
virtual nscoord GetPrefISize(gfxContext* aRenderingContext) override;
void AddInlineMinISize(gfxContext* aRenderingContext,
nsIFrame::InlineMinISizeData* aData) override;
void AddInlinePrefISize(gfxContext* aRenderingContext,
nsIFrame::InlinePrefISizeData* aData) override;
virtual 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);
#ifdef ACCESSIBILITY
void GetSpokenText(nsAString& aText);
#endif
Maybe<BulletRenderer> CreateBulletRenderer(gfxContext& aRenderingContext,
nsPoint aPt);
ImgDrawResult PaintBullet(gfxContext& aRenderingContext, nsPoint aPt,
const nsRect& aDirtyRect, uint32_t aFlags,
bool aDisableSubpixelAA);
virtual bool IsEmpty() override;
virtual 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.
virtual nscoord GetLogicalBaseline(
mozilla::WritingMode aWritingMode) const override;
bool GetNaturalBaselineBOffset(mozilla::WritingMode aWM,
BaselineSharingGroup aBaselineGroup,
nscoord* aBaseline) const override;
float GetFontSizeInflation() const;
bool HasFontSizeInflation() const {
return HasAnyStateBits(BULLET_FRAME_HAS_FONT_INFLATION);
}
void SetFontSizeInflation(float aInflation);
int32_t Ordinal() const { return mOrdinal; }
void SetOrdinal(int32_t aOrdinal, bool aNotify);
already_AddRefed<imgIContainer> GetImage() const;
protected:
void OnSizeAvailable(imgIRequest* aRequest, imgIContainer* aImage);
void AppendSpacingToPadding(nsFontMetrics* aFontMetrics,
mozilla::LogicalMargin* aPadding);
void GetDesiredSize(nsPresContext* aPresContext,
gfxContext* aRenderingContext, ReflowOutput& aMetrics,
float aFontSizeInflation,
mozilla::LogicalMargin* aPadding);
void GetLoadGroup(nsPresContext* aPresContext, nsILoadGroup** aLoadGroup);
mozilla::dom::Document* GetOurCurrentDoc() const;
mozilla::LogicalMargin mPadding;
RefPtr<imgRequestProxy> mImageRequest;
RefPtr<nsBulletListener> mListener;
mozilla::LogicalSize mIntrinsicSize;
private:
mozilla::CounterStyle* ResolveCounterStyle();
nscoord GetListStyleAscent() const;
void RegisterImageRequest(bool aKnownToBeAnimated);
void DeregisterAndCancelImageRequest();
// Requires being set via SetOrdinal.
int32_t mOrdinal = 0;
// This is a boolean flag indicating whether or not the current image request
// has been registered with the refresh driver.
bool mRequestRegistered : 1;
};
#endif /* nsBulletFrame_h___ */
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