/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* 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 "nsFrame.h" #include "imgIContainer.h" #include "imgINotificationObserver.h" #include "imgIOnloadBlocker.h" class imgIContainer; class imgRequestProxy; class nsBulletFrame; class nsBulletListener final : public imgINotificationObserver, public imgIOnloadBlocker { public: nsBulletListener(); NS_DECL_ISUPPORTS NS_DECL_IMGINOTIFICATIONOBSERVER NS_DECL_IMGIONLOADBLOCKER 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 nsFrame { typedef mozilla::image::DrawResult DrawResult; public: NS_DECL_FRAMEARENA_HELPERS #ifdef DEBUG NS_DECL_QUERYFRAME_TARGET(nsBulletFrame) NS_DECL_QUERYFRAME #endif explicit nsBulletFrame(nsStyleContext* aContext) : nsFrame(aContext) , mPadding(GetWritingMode()) , mIntrinsicSize(GetWritingMode()) , mRequestRegistered(false) , mBlockingOnload(false) { } virtual ~nsBulletFrame(); NS_IMETHOD Notify(imgIRequest* aRequest, int32_t aType, const nsIntRect* aData); NS_IMETHOD BlockOnload(imgIRequest* aRequest); NS_IMETHOD UnblockOnload(imgIRequest* aRequest); // nsIFrame virtual void DestroyFrom(nsIFrame* aDestructRoot) override; virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder, const nsRect& aDirtyRect, const nsDisplayListSet& aLists) override; virtual nsIAtom* GetType() const override; virtual void DidSetStyleContext(nsStyleContext* aOldStyleContext) 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(nsRenderingContext *aRenderingContext) override; virtual nscoord GetPrefISize(nsRenderingContext *aRenderingContext) override; void AddInlineMinISize(nsRenderingContext* aRenderingContext, nsIFrame::InlineMinISizeData* aData) override; void AddInlinePrefISize(nsRenderingContext* aRenderingContext, nsIFrame::InlinePrefISizeData* aData) override; // nsBulletFrame int32_t SetListItemOrdinal(int32_t aNextOrdinal, bool* aChanged, int32_t aIncrement); /* get list item text, with prefix & suffix */ void GetListItemText(nsAString& aResult); void GetSpokenText(nsAString& aText); DrawResult PaintBullet(nsRenderingContext& aRenderingContext, nsPoint aPt, const nsRect& aDirtyRect, uint32_t aFlags, bool aDisableSubpixelAA); virtual bool IsEmpty() override; virtual bool IsSelfEmpty() override; virtual nscoord GetLogicalBaseline(mozilla::WritingMode aWritingMode) const override; float GetFontSizeInflation() const; bool HasFontSizeInflation() const { return (GetStateBits() & BULLET_FRAME_HAS_FONT_INFLATION) != 0; } void SetFontSizeInflation(float aInflation); int32_t GetOrdinal() { return mOrdinal; } already_AddRefed<imgIContainer> GetImage() const; protected: nsresult OnSizeAvailable(imgIRequest* aRequest, imgIContainer* aImage); void AppendSpacingToPadding(nsFontMetrics* aFontMetrics, mozilla::LogicalMargin* aPadding); void GetDesiredSize(nsPresContext* aPresContext, nsRenderingContext *aRenderingContext, ReflowOutput& aMetrics, float aFontSizeInflation, mozilla::LogicalMargin* aPadding); void GetLoadGroup(nsPresContext *aPresContext, nsILoadGroup **aLoadGroup); nsIDocument* GetOurCurrentDoc() const; mozilla::LogicalMargin mPadding; RefPtr<imgRequestProxy> mImageRequest; RefPtr<nsBulletListener> mListener; mozilla::LogicalSize mIntrinsicSize; int32_t mOrdinal; private: void RegisterImageRequest(bool aKnownToBeAnimated); void DeregisterAndCancelImageRequest(); // This is a boolean flag indicating whether or not the current image request // has been registered with the refresh driver. bool mRequestRegistered : 1; // Whether we're currently blocking onload. bool mBlockingOnload : 1; }; #endif /* nsBulletFrame_h___ */