gecko-dev/layout/generic/nsBlockFrame.h

248 lines
8.5 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 "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/NPL/
*
* 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 Netscape are Copyright (C) 1998
* Netscape Communications Corporation. All Rights Reserved.
*/
#ifndef nsBlockFrame_h___
#define nsBlockFrame_h___
#include "nsHTMLContainerFrame.h"
class nsTextRun;
class BulletFrame;
struct LineData;
struct nsBlockReflowState;
/**
* Child list name indices
* @see #GetAdditionalChildListName()
*/
#define NS_BLOCK_FRAME_FLOATER_LIST_INDEX 0
#define NS_BLOCK_FRAME_BULLET_LIST_INDEX 1
#define NS_BLOCK_FRAME_LAST_LIST_INDEX NS_BLOCK_FRAME_BULLET_LIST_INDEX
#define nsBlockFrameSuper nsHTMLContainerFrame
class nsBlockFrame : public nsBlockFrameSuper
{
public:
nsBlockFrame(nsIContent* aContent, nsIFrame* aParent);
~nsBlockFrame();
// nsISupports
NS_IMETHOD QueryInterface(const nsIID& aIID, void** aInstancePtr);
// nsIFrame
NS_IMETHOD SetInitialChildList(nsIPresContext& aPresContext,
nsIAtom* aListName,
nsIFrame* aChildList);
NS_IMETHOD ReResolveStyleContext(nsIPresContext* aPresContext,
nsIStyleContext* aParentContext);
NS_IMETHOD FirstChild(nsIAtom* aListName, nsIFrame*& aFirstChild) const;
NS_IMETHOD GetAdditionalChildListName(PRInt32 aIndex,
nsIAtom*& aListName) const;
NS_IMETHOD DeleteFrame(nsIPresContext& aPresContext);
NS_IMETHOD IsSplittable(nsSplittableType& aIsSplittable) const;
NS_IMETHOD CreateContinuingFrame(nsIPresContext& aPresContext,
nsIFrame* aParent,
nsIStyleContext* aStyleContext,
nsIFrame*& aContinuingFrame);
NS_IMETHOD Paint(nsIPresContext& aPresContext,
nsIRenderingContext& aRenderingContext,
const nsRect& aDirtyRect);
NS_IMETHOD IsPercentageBase(PRBool& aBase) const;
NS_IMETHOD List(FILE* out, PRInt32 aIndent, nsIListFilter *aFilter) const;
NS_IMETHOD GetFrameName(nsString& aResult) const;
NS_IMETHOD VerifyTree() const;
NS_IMETHOD GetFrameForPoint(const nsPoint& aPoint, nsIFrame** aFrame);
// nsIHTMLReflow
NS_IMETHOD Reflow(nsIPresContext& aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus);
NS_IMETHOD MoveInSpaceManager(nsIPresContext& aPresContext,
nsISpaceManager* aSpaceManager,
nscoord aDeltaX, nscoord aDeltaY);
// nsBlockFrame
void TakeRunInFrames(nsBlockFrame* aRunInFrame);
PRBool ShouldPlaceBullet(LineData* aLine);
void PlaceBullet(nsBlockReflowState& aState,
nscoord aMaxAscent,
nscoord aTopMargin);
#ifdef DO_SELECTION
NS_IMETHOD HandleEvent(nsIPresContext& aPresContext,
nsGUIEvent* aEvent,
nsEventStatus& aEventStatus);
NS_IMETHOD HandleDrag(nsIPresContext& aPresContext,
nsGUIEvent* aEvent,
nsEventStatus& aEventStatus);
nsIFrame * FindHitFrame(nsBlockFrame * aBlockFrame,
const nscoord aX, const nscoord aY,
const nsPoint & aPoint);
#endif
virtual PRBool DeleteChildsNextInFlow(nsIPresContext& aPresContext,
nsIFrame* aNextInFlow);
void RestoreStyleFor(nsIPresContext& aPresContext, nsIFrame* aFrame);
void SetFlags(PRUint32 aFlags) {
mFlags = aFlags;
}
void RecoverLineMargins(nsBlockReflowState& aState,
LineData* aPrevLine,
nscoord& aTopMarginResult,
nscoord& aBottomMarginResult);
PRUintn CalculateMargins(nsBlockReflowState& aState,
LineData* aLine,
PRBool aInlineContext,
nscoord& aTopMarginResult,
nscoord& aBottomMarginResult);
void SlideFrames(nsIPresContext& aPresContext,
nsISpaceManager* aSpaceManager,
LineData* aLine, nscoord aDY);
PRBool DrainOverflowLines();
PRBool RemoveChild(LineData* aLines, nsIFrame* aChild);
PRIntn GetSkipSides() const;
nsresult InitialReflow(nsBlockReflowState& aState);
nsresult FrameAppendedReflow(nsBlockReflowState& aState);
nsresult InsertNewFrame(nsIPresContext& aPresContext,
nsBlockFrame* aParentFrame,
nsIFrame* aNewFrame,
nsIFrame* aPrevSibling);
nsresult FrameInsertedReflow(nsBlockReflowState& aState);
nsresult FrameRemovedReflow(nsBlockReflowState& aState);
nsresult StyleChangedReflow(nsBlockReflowState& aState);
nsresult FindTextRuns(nsBlockReflowState& aState);
nsresult ChildIncrementalReflow(nsBlockReflowState& aState);
nsresult ResizeReflow(nsBlockReflowState& aState);
void ComputeFinalSize(nsBlockReflowState& aState,
nsHTMLReflowMetrics& aMetrics);
void BuildFloaterList();
nsresult ReflowLinesAt(nsBlockReflowState& aState, LineData* aLine);
PRBool ReflowLine(nsBlockReflowState& aState,
LineData* aLine,
nsReflowStatus& aReflowResult);
PRBool PlaceLine(nsBlockReflowState& aState,
LineData* aLine,
nsReflowStatus aReflowStatus);
PRBool IsLastLine(nsBlockReflowState& aState,
LineData* aLine,
nsReflowStatus aReflowStatus);
void FindFloaters(LineData* aLine);
void PrepareInlineReflow(nsBlockReflowState& aState, nsIFrame* aFrame, PRBool aIsBlock);
PRBool ReflowInlineFrame(nsBlockReflowState& aState,
LineData* aLine,
nsIFrame* aFrame,
nsReflowStatus& aResult,
PRBool& aAddedToLine);
nsresult SplitLine(nsBlockReflowState& aState,
LineData* aLine,
nsIFrame* aFrame);
nsBlockFrame* FindFollowingBlockFrame(nsIFrame* aFrame);
PRBool ReflowBlockFrame(nsBlockReflowState& aState,
LineData* aLine,
nsIFrame* aFrame,
nsReflowStatus& aResult);
PRBool PullFrame(nsBlockReflowState& aState,
LineData* aToLine,
LineData** aFromList,
PRBool aUpdateGeometricParent,
nsReflowStatus& aResult,
PRBool& aAddedToLine);
void PushLines(nsBlockReflowState& aState);
void ReflowFloater(nsIPresContext& aPresContext,
nsBlockReflowState& aState,
nsIFrame* aFloaterFrame,
nsHTMLReflowState& aFloaterReflowState);
void PaintChildren(nsIPresContext& aPresContext,
nsIRenderingContext& aRenderingContext,
const nsRect& aDirtyRect);
void PaintFloaters(nsIPresContext& aPresContext,
nsIRenderingContext& aRenderingContext,
const nsRect& aDirtyRect);
nsresult AppendNewFrames(nsIPresContext& aPresContext, nsIFrame*);
void RenumberLists(nsBlockReflowState& aState);
#ifdef NS_DEBUG
PRBool IsChild(nsIFrame* aFrame);
#endif
nsIStyleContext* mFirstLineStyle;
nsIStyleContext* mFirstLetterStyle;
LineData* mLines;
LineData* mOverflowLines;
// Text run information
nsTextRun* mTextRuns;
// For list-item frames, this is the bullet frame.
BulletFrame* mBullet;
// List of all floaters in this block
nsIFrame* mFloaters;
// Body configuration flags passed into this block when this block
// is used by the body.
PRUint32 mFlags;
static nsIAtom* gFloaterAtom;
static nsIAtom* gBulletAtom;
};
#endif /* nsBlockFrame_h___ */