c04a6a88dc
Space optimization. mBorderEdges is no longer an embedded object. Now it's allocated when needed (for collapsing border model tables only). This saves 80 bytes per table cell frame for the normal HTML case of adjacent border model git-svn-id: svn://10.0.0.236/trunk@50941 18797224-902f-48f8-a5cc-f745e15eee43
340 lines
11 KiB
C++
340 lines
11 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 nsTableCellFrame_h__
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#define nsTableCellFrame_h__
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#include "nsITableCellLayout.h"
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#include "nscore.h"
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#include "nsHTMLContainerFrame.h"
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#include "nsTableRowFrame.h" // need to actually include this here to inline GetRowIndex
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#include "nsIStyleContext.h"
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struct nsStyleSpacing;
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class nsTableFrame;
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class nsHTMLValue;
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/**
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* Additional frame-state bits
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*/
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#define NS_TABLE_CELL_FRAME_CONTENT_EMPTY 0x80000000
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/**
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* nsTableCellFrame
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* data structure to maintain information about a single table cell's frame
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*
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* NOTE: frames are not ref counted. We expose addref and release here
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* so we can change that decsion in the future. Users of nsITableCellLayout
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* should refcount correctly as if this object is being ref counted, though
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* no actual support is under the hood.
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*
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* @author sclark
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*/
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class nsTableCellFrame : public nsHTMLContainerFrame, public nsITableCellLayout
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{
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public:
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// nsISupports
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NS_DECL_ISUPPORTS_INHERITED
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// default constructor supplied by the compiler
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~nsTableCellFrame();
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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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// table cells contain an area frame which does most of the work, and
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// so these functions should never be called. They assert and return
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// NS_ERROR_NOT_IMPLEMENTED
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NS_IMETHOD AppendFrames(nsIPresContext& aPresContext,
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nsIPresShell& aPresShell,
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nsIAtom* aListName,
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nsIFrame* aFrameList);
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NS_IMETHOD InsertFrames(nsIPresContext& aPresContext,
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nsIPresShell& aPresShell,
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nsIAtom* aListName,
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nsIFrame* aPrevFrame,
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nsIFrame* aFrameList);
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NS_IMETHOD RemoveFrame(nsIPresContext& aPresContext,
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nsIPresShell& aPresShell,
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nsIAtom* aListName,
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nsIFrame* aOldFrame);
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void InitCellFrame(PRInt32 aColIndex);
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void SetBorderEdge(PRUint8 aSide,
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PRInt32 aRowIndex,
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PRInt32 aColIndex,
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nsBorderEdge *border,
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nscoord aOddAmountToAdd);
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void SetBorderEdgeLength(PRUint8 aSide,
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PRInt32 aIndex,
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nscoord aLength);
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/** instantiate a new instance of nsTableCellFrame.
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* @param aResult the new object is returned in this out-param
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*
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* @return NS_OK if the frame was properly allocated, otherwise an error code
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*/
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friend nsresult
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NS_NewTableCellFrame(nsIFrame** aResult);
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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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NS_IMETHOD SetSelected(nsIDOMRange *aRange,PRBool aSelected, nsSpread aSpread);
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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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/**
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* Get the "type" of the frame
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*
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* @see nsLayoutAtoms::tableCellFrame
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*/
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NS_IMETHOD GetFrameType(nsIAtom** aType) const;
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#ifdef DEBUG
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NS_IMETHOD SizeOf(nsISizeOfHandler* aSizer, PRUint32* aResult) const;
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#endif
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NS_IMETHOD GetFrameName(nsString& aResult) const;
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virtual void VerticallyAlignChild();
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/**
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* return the cell's specified row span. this is what was specified in the
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* content model or in the style info, and is always >= 1.
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* to get the effective row span (the actual value that applies), use GetEffectiveRowSpan()
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* @see nsTableFrame::GetEffectiveRowSpan()
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*/
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virtual PRInt32 GetRowSpan();
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// there is no set row index because row index depends on the cell's parent row only
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/*---------------- nsITableCellLayout methods ------------------------*/
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/**
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* return the cell's starting row index (starting at 0 for the first row).
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* for continued cell frames the row index is that of the cell's first-in-flow
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* and the column index (starting at 0 for the first column
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*/
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NS_IMETHOD GetCellIndexes(PRInt32 &aRowIndex, PRInt32 &aColIndex);
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/** return the mapped cell's row index (starting at 0 for the first row) */
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virtual nsresult GetRowIndex(PRInt32 &aRowIndex) const;
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/**
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* return the cell's specified col span. this is what was specified in the
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* content model or in the style info, and is always >= 1.
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* to get the effective col span (the actual value that applies), use GetEffectiveColSpan()
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* @see nsTableFrame::GetEffectiveColSpan()
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*/
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virtual PRInt32 GetColSpan();
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/** return the cell's column index (starting at 0 for the first column) */
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virtual nsresult GetColIndex(PRInt32 &aColIndex) const;
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virtual nsresult SetColIndex(PRInt32 aColIndex);
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/** return the available width given to this frame during its last reflow */
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virtual nscoord GetPriorAvailWidth();
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/** set the available width given to this frame during its last reflow */
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virtual void SetPriorAvailWidth(nscoord aPriorAvailWidth);
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/** return the desired size returned by this frame during its last reflow */
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virtual nsSize GetDesiredSize();
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/** set the desired size returned by this frame during its last reflow */
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virtual void SetDesiredSize(const nsHTMLReflowMetrics & aDesiredSize);
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/** return the desired size returned by this frame during its last reflow */
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virtual nsSize GetPass1DesiredSize() const;
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/** set the desired size returned by this frame during its last reflow */
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virtual void SetPass1DesiredSize(const nsHTMLReflowMetrics & aDesiredSize);
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/** return the MaxElement size returned by this frame during its last reflow
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* not counting reflows where MaxElementSize is not requested.
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* That is, the cell frame will always remember the last non-null MaxElementSize
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*/
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virtual nsSize GetPass1MaxElementSize() const;
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/** set the MaxElement size returned by this frame during its last reflow.
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* should never be called with a null MaxElementSize
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*/
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virtual void SetPass1MaxElementSize(const nsSize & aMaxElementSize);
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void RecalcLayoutData(nsMargin& aMargin);
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NS_IMETHOD GetMargin(nsMargin& aMargin);
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PRBool GetContentEmpty();
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void SetContentEmpty(PRBool aContentEmpty);
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// The collapse offset is (0,0) except for cells originating in a row/col which is collapsed
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void SetCollapseOffsetX(nscoord aXOffset);
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void SetCollapseOffsetY(nscoord aYOffset);
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nsPoint GetCollapseOffset();
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protected:
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/** implement abstract method on nsHTMLContainerFrame */
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virtual PRIntn GetSkipSides() const;
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virtual PRBool ParentDisablesSelection() const; //override default behavior
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private:
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// All these methods are support methods for RecalcLayoutData
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nsIFrame* GetFrameAt(nsVoidArray* aList, PRInt32 aIndex);
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nscoord GetMargin(nsIFrame* aFrame, PRUint8 aEdge) const;
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//XXX: aTableFrame can be removed as soon as border-collapse inherits correctly
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void GetCellBorder(nsMargin &aBorder, nsTableFrame *aTableFrame);
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PRUint8 GetOpposingEdge(PRUint8 aEdge);
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protected:
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// Subclass hook for style post processing
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NS_IMETHOD DidSetStyleContext(nsIPresContext* aPresContext);
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void MapBorderMarginPadding(nsIPresContext* aPresContext);
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void MapHTMLBorderStyle(nsIPresContext* aPresContext,
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nsStyleSpacing& aSpacingStyle,
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nsTableFrame* aTableFrame);
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void MapVAlignAttribute(nsIPresContext* aPresContext, nsTableFrame *aTableFrame);
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void MapHAlignAttribute(nsIPresContext* aPresContext, nsTableFrame *aTableFrame);
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PRBool ConvertToPixelValue(nsHTMLValue& aValue, PRInt32 aDefault, PRInt32& aResult);
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protected:
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/** the starting column for this cell */
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int mColIndex;
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/** the available width we were given in our previous reflow */
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nscoord mPriorAvailWidth;
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/** these are the last computed desired and max element sizes */
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nsSize mDesiredSize;
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nsSize mMaxElementSize;
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/** these are the Pass 1 unconstrained desired and max element sizes */
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nsSize mPass1DesiredSize;
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nsSize mPass1MaxElementSize;
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nsMargin mMargin;
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nsPoint mCollapseOffset;
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public:
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nsBorderEdges *mBorderEdges; // one list of border segments for each side of the table frame
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// used only for the collapsing border model
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};
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inline nsresult nsTableCellFrame::GetRowIndex(PRInt32 &aRowIndex) const
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{
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nsTableCellFrame* cell = (nsTableCellFrame*)GetFirstInFlow();
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nsresult result;
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nsTableRowFrame * row;
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cell->GetParent((nsIFrame **)&row);
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if (nsnull!=row)
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{
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aRowIndex = row->GetRowIndex();
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result = NS_OK;
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}
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else
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{
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aRowIndex = 0;
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result = NS_ERROR_NOT_INITIALIZED;
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}
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return result;
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}
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inline nsresult nsTableCellFrame::GetColIndex(PRInt32 &aColIndex) const
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{
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aColIndex = mColIndex;
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return NS_OK;
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}
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inline nscoord nsTableCellFrame::GetPriorAvailWidth()
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{ return mPriorAvailWidth;}
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inline void nsTableCellFrame::SetPriorAvailWidth(nscoord aPriorAvailWidth)
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{ mPriorAvailWidth = aPriorAvailWidth;}
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inline nsSize nsTableCellFrame::GetDesiredSize()
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{ return mDesiredSize; }
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inline void nsTableCellFrame::SetDesiredSize(const nsHTMLReflowMetrics & aDesiredSize)
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{
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mDesiredSize.width = aDesiredSize.width;
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mDesiredSize.height = aDesiredSize.height;
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}
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inline nsSize nsTableCellFrame::GetPass1DesiredSize() const
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{ return mPass1DesiredSize; }
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inline void nsTableCellFrame::SetPass1DesiredSize(const nsHTMLReflowMetrics & aDesiredSize)
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{
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mPass1DesiredSize.width = aDesiredSize.width;
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mPass1DesiredSize.height = aDesiredSize.height;
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}
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inline nsSize nsTableCellFrame::GetPass1MaxElementSize() const
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{ return mPass1MaxElementSize; }
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inline NS_METHOD nsTableCellFrame::GetMargin(nsMargin& aMargin)
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{
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aMargin = mMargin;
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return NS_OK;
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}
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inline PRBool nsTableCellFrame::GetContentEmpty()
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{
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return (mState & NS_TABLE_CELL_FRAME_CONTENT_EMPTY) ==
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NS_TABLE_CELL_FRAME_CONTENT_EMPTY;
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}
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inline void nsTableCellFrame::SetContentEmpty(PRBool aContentEmpty)
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{
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if (aContentEmpty) {
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mState |= NS_TABLE_CELL_FRAME_CONTENT_EMPTY;
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} else {
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mState &= ~NS_TABLE_CELL_FRAME_CONTENT_EMPTY;
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}
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}
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#endif
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