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/* -*- 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___ */
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