gecko-dev/layout/generic/nsFirstLetterFrame.h

117 строки
4.8 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
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
#ifndef nsFirstLetterFrame_h__
#define nsFirstLetterFrame_h__
/* rendering object for CSS :first-letter pseudo-element */
#include "nsHTMLContainerFrame.h"
#define nsFirstLetterFrameSuper nsHTMLContainerFrame
class nsFirstLetterFrame : public nsFirstLetterFrameSuper {
public:
NS_DECL_QUERYFRAME_TARGET(nsFirstLetterFrame)
NS_DECL_QUERYFRAME
NS_DECL_FRAMEARENA_HELPERS
nsFirstLetterFrame(nsStyleContext* aContext) : nsHTMLContainerFrame(aContext) {}
NS_IMETHOD Init(nsIContent* aContent,
nsIFrame* aParent,
nsIFrame* aPrevInFlow);
NS_IMETHOD SetInitialChildList(nsIAtom* aListName,
nsFrameList& aChildList);
#ifdef NS_DEBUG
NS_IMETHOD GetFrameName(nsAString& aResult) const;
#endif
virtual nsIAtom* GetType() const;
virtual PRBool IsFrameOfType(PRUint32 aFlags) const
{
if (!GetStyleDisplay()->IsFloating())
aFlags = aFlags & ~(nsIFrame::eLineParticipant);
return nsFirstLetterFrameSuper::IsFrameOfType(aFlags &
~(nsIFrame::eBidiInlineContainer));
}
virtual nscoord GetMinWidth(nsRenderingContext *aRenderingContext);
virtual nscoord GetPrefWidth(nsRenderingContext *aRenderingContext);
virtual void AddInlineMinWidth(nsRenderingContext *aRenderingContext,
InlineMinWidthData *aData);
virtual void AddInlinePrefWidth(nsRenderingContext *aRenderingContext,
InlinePrefWidthData *aData);
virtual nsSize ComputeSize(nsRenderingContext *aRenderingContext,
nsSize aCBSize, nscoord aAvailableWidth,
nsSize aMargin, nsSize aBorder, nsSize aPadding,
PRBool aShrinkWrap);
NS_IMETHOD Reflow(nsPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus);
virtual PRBool CanContinueTextRun() const;
virtual nscoord GetBaseline() const;
//override of nsFrame method
NS_IMETHOD GetChildFrameContainingOffset(PRInt32 inContentOffset,
PRBool inHint,
PRInt32* outFrameContentOffset,
nsIFrame **outChildFrame);
nscoord GetFirstLetterBaseline() const { return mBaseline; }
// For floating first letter frames, create a continuation for aChild and
// place it in the correct place. aContinuation is an outparam for the
// continuation that is created. aIsFluid determines if the continuation is
// fluid or not.
nsresult CreateContinuationForFloatingParent(nsPresContext* aPresContext,
nsIFrame* aChild,
nsIFrame** aContinuation,
PRBool aIsFluid);
protected:
nscoord mBaseline;
virtual PRIntn GetSkipSides() const;
void DrainOverflowFrames(nsPresContext* aPresContext);
};
#endif /* nsFirstLetterFrame_h__ */