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