gecko-dev/layout/generic/nsBulletFrame.h

126 lines
4.6 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* The Original Code is Mozilla Communicator client code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
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* decision by deleting the provisions above and replace them with the notice
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* the provisions above, a recipient may use your version of this file under
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*
* ***** END LICENSE BLOCK ***** */
/* rendering object for list-item bullets */
#ifndef nsBulletFrame_h___
#define nsBulletFrame_h___
#include "nsFrame.h"
#include "nsStyleContext.h"
#include "imgIRequest.h"
#include "imgIDecoderObserver.h"
/**
* 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();
// nsIFrame
virtual void DestroyFrom(nsIFrame* aDestructRoot);
NS_IMETHOD BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsRect& aDirtyRect,
const nsDisplayListSet& aLists);
virtual nsIAtom* GetType() const;
virtual void DidSetStyleContext(nsStyleContext* aOldStyleContext);
#ifdef NS_DEBUG
NS_IMETHOD GetFrameName(nsAString& aResult) const;
#endif
// nsIHTMLReflow
NS_IMETHOD Reflow(nsPresContext* aPresContext,
nsHTMLReflowMetrics& aMetrics,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus);
virtual nscoord GetMinWidth(nsIRenderingContext *aRenderingContext);
virtual nscoord GetPrefWidth(nsIRenderingContext *aRenderingContext);
// nsBulletFrame
PRInt32 SetListItemOrdinal(PRInt32 aNextOrdinal, PRBool* aChanged);
NS_IMETHOD OnStartContainer(imgIRequest *aRequest, imgIContainer *aImage);
NS_IMETHOD OnDataAvailable(imgIRequest *aRequest,
PRBool aCurrentFrame,
const nsIntRect *aRect);
NS_IMETHOD OnStopDecode(imgIRequest *aRequest,
nsresult aStatus,
const PRUnichar *aStatusArg);
NS_IMETHOD FrameChanged(imgIContainer *aContainer,
nsIntRect *aDirtyRect);
/* get list item text, without '.' */
static PRBool AppendCounterText(PRInt32 aListStyleType,
PRInt32 aOrdinal,
nsString& aResult);
/* get list item text, with '.' */
PRBool GetListItemText(const nsStyleList& aStyleList,
nsString& aResult);
void PaintBullet(nsIRenderingContext& aRenderingContext, nsPoint aPt,
const nsRect& aDirtyRect);
virtual PRBool IsEmpty();
virtual PRBool IsSelfEmpty();
protected:
void GetDesiredSize(nsPresContext* aPresContext,
nsIRenderingContext *aRenderingContext,
nsHTMLReflowMetrics& aMetrics);
void GetLoadGroup(nsPresContext *aPresContext, nsILoadGroup **aLoadGroup);
nsMargin mPadding;
nsCOMPtr<imgIRequest> mImageRequest;
nsCOMPtr<imgIDecoderObserver> mListener;
nsSize mIntrinsicSize;
nsSize mComputedSize;
PRInt32 mOrdinal;
PRBool mTextIsRTL;
};
#endif /* nsBulletFrame_h___ */