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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 "nsStyleContext.h"
#include "imgIRequest.h"
#include "imgINotificationObserver.h"
class imgRequestProxy;
#define BULLET_FRAME_IMAGE_LOADING NS_FRAME_STATE_BIT(63)
#define BULLET_FRAME_HAS_FONT_INFLATION NS_FRAME_STATE_BIT(62)
class nsBulletFrame;
class nsBulletListener : public imgINotificationObserver
{
public:
nsBulletListener();
virtual ~nsBulletListener();
NS_DECL_ISUPPORTS
NS_DECL_IMGINOTIFICATIONOBSERVER
void SetFrame(nsBulletFrame *frame) { mFrame = frame; }
private:
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 : public nsFrame {
public:
NS_DECL_FRAMEARENA_HELPERS
nsBulletFrame(nsStyleContext* aContext)
: nsFrame(aContext)
{
}
virtual ~nsBulletFrame();
NS_IMETHOD Notify(imgIRequest *aRequest, int32_t aType, const nsIntRect* aData);
// nsIFrame
virtual void DestroyFrom(nsIFrame* aDestructRoot);
virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsRect& aDirtyRect,
const nsDisplayListSet& aLists) MOZ_OVERRIDE;
virtual nsIAtom* GetType() const MOZ_OVERRIDE;
virtual void DidSetStyleContext(nsStyleContext* aOldStyleContext) MOZ_OVERRIDE;
#ifdef DEBUG
NS_IMETHOD GetFrameName(nsAString& aResult) const MOZ_OVERRIDE;
#endif
// nsIHTMLReflow
NS_IMETHOD Reflow(nsPresContext* aPresContext,
nsHTMLReflowMetrics& aMetrics,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus) MOZ_OVERRIDE;
virtual nscoord GetMinWidth(nsRenderingContext *aRenderingContext) MOZ_OVERRIDE;
virtual nscoord GetPrefWidth(nsRenderingContext *aRenderingContext) MOZ_OVERRIDE;
// nsBulletFrame
int32_t SetListItemOrdinal(int32_t aNextOrdinal, bool* aChanged,
int32_t aIncrement);
/* get list item text, without '.' */
static bool AppendCounterText(int32_t aListStyleType,
int32_t aOrdinal,
nsString& aResult);
/* get list item text, with '.' */
bool GetListItemText(const nsStyleList& aStyleList,
nsString& aResult);
void PaintBullet(nsRenderingContext& aRenderingContext, nsPoint aPt,
const nsRect& aDirtyRect);
virtual bool IsEmpty() MOZ_OVERRIDE;
virtual bool IsSelfEmpty() MOZ_OVERRIDE;
virtual nscoord GetBaseline() const MOZ_OVERRIDE;
float GetFontSizeInflation() const;
bool HasFontSizeInflation() const {
return (GetStateBits() & BULLET_FRAME_HAS_FONT_INFLATION) != 0;
}
void SetFontSizeInflation(float aInflation);
int32_t GetOrdinal() { return mOrdinal; }
protected:
nsresult OnStartContainer(imgIRequest *aRequest, imgIContainer *aImage);
void GetDesiredSize(nsPresContext* aPresContext,
nsRenderingContext *aRenderingContext,
nsHTMLReflowMetrics& aMetrics,
float aFontSizeInflation);
void GetLoadGroup(nsPresContext *aPresContext, nsILoadGroup **aLoadGroup);
nsMargin mPadding;
nsRefPtr<imgRequestProxy> mImageRequest;
nsRefPtr<nsBulletListener> mListener;
nsSize mIntrinsicSize;
int32_t mOrdinal;
bool mTextIsRTL;
private:
// This is a boolean flag indicating whether or not the current image request
// has been registered with the refresh driver.
bool mRequestRegistered;
};
#endif /* nsBulletFrame_h___ */
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