зеркало из https://github.com/mozilla/gecko-dev.git
139 строки
4.4 KiB
C++
139 строки
4.4 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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#ifndef nsAreaFrame_h___
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#define nsAreaFrame_h___
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#include "nsBlockFrame.h"
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#include "nsISpaceManager.h"
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#include "nsVoidArray.h"
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#include "nsIAreaFrame.h"
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class nsSpaceManager;
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struct nsStyleDisplay;
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struct nsStylePosition;
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/**
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* Child list name indices
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* @see #GetAdditionalChildListName()
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*/
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#define NS_AREA_FRAME_ABSOLUTE_LIST_INDEX (NS_BLOCK_FRAME_LAST_LIST_INDEX + 1)
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/**
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* The area frame has an additional named child list:
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* - "Absolute-list" which contains the absolutely positioned frames
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*
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* @see nsLayoutAtoms::absoluteList
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*/
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class nsAreaFrame : public nsBlockFrame, public nsIAreaFrame
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{
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public:
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friend nsresult NS_NewAreaFrame(nsIFrame*& aResult, PRUint32 aFlags);
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// nsISupports
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NS_IMETHOD QueryInterface(const nsIID& aIID, void** aInstancePtr);
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// nsIFrame
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NS_IMETHOD Init(nsIPresContext& aPresContext,
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nsIContent* aContent,
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nsIFrame* aParent,
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nsIStyleContext* aContext,
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nsIFrame* aPrevInFlow);
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NS_IMETHOD DeleteFrame(nsIPresContext& aPresContext);
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NS_IMETHOD SetInitialChildList(nsIPresContext& aPresContext,
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nsIAtom* aListName,
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nsIFrame* aChildList);
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NS_IMETHOD GetAdditionalChildListName(PRInt32 aIndex,
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nsIAtom** aListName) const;
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NS_IMETHOD FirstChild(nsIAtom* aListName, nsIFrame** aFirstChild) const;
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NS_IMETHOD Reflow(nsIPresContext& aPresContext,
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nsHTMLReflowMetrics& aDesiredSize,
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const nsHTMLReflowState& aReflowState,
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nsReflowStatus& aStatus);
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#ifdef NS_DEBUG
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NS_IMETHOD Paint(nsIPresContext& aPresContext,
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nsIRenderingContext& aRenderingContext,
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const nsRect& aDirtyRect,
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nsFramePaintLayer aWhichLayer);
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#endif
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NS_IMETHOD DidReflow(nsIPresContext& aPresContext,
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nsDidReflowStatus aStatus);
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/**
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* Get the "type" of the frame
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*
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* @see nsLayoutAtoms::areaFrame
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*/
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NS_IMETHOD GetFrameType(nsIAtom** aType) const;
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NS_IMETHOD GetFrameName(nsString& aResult) const;
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// nsIAreaFrame
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NS_IMETHOD GetPositionedInfo(nscoord& aXMost, nscoord& aYMost) const;
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protected:
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nsAreaFrame();
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virtual ~nsAreaFrame();
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nsresult IncrementalReflow(nsIPresContext& aPresContext,
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const nsHTMLReflowState& aReflowState);
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nsresult ReflowAbsoluteFrame(nsIPresContext& aPresContext,
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const nsHTMLReflowState& aReflowState,
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nsIFrame* aKidFrame,
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PRBool aInitialReflow,
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nsReflowStatus& aStatus);
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void ReflowAbsoluteFrames(nsIPresContext& aPresContext,
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const nsHTMLReflowState& aReflowState);
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private:
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nsSpaceManager* mSpaceManager;
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nsFrameList mAbsoluteFrames; // additional named child list
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#ifdef NS_DEBUG
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struct BandData : public nsBandData {
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// Trapezoids used during band processing
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nsBandTrapezoid data[12];
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// Bounding rect of available space between any left and right floaters
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nsRect availSpace;
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BandData() {
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size = 12;
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trapezoids = data;
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}
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/**
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* Computes the bounding rect of the available space, i.e. space
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* between any left and right floaters Uses the current trapezoid
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* data, see nsISpaceManager::GetBandData(). Also updates member
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* data "availSpace".
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*/
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void ComputeAvailSpaceRect();
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};
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#endif
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};
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#endif /* nsAreaFrame_h___ */
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