/* -*- 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 nsTableCellFrame_h__ #define nsTableCellFrame_h__ #include "nsITableCellLayout.h" #include "nscore.h" #include "nsHTMLContainerFrame.h" #include "nsTableRowFrame.h" // need to actually include this here to inline GetRowIndex #include "nsIStyleContext.h" struct nsStyleSpacing; class nsTableFrame; class nsHTMLValue; /** * nsTableCellFrame * data structure to maintain information about a single table cell's frame * * NOTE: frames are not ref counted. We expose addref and release here * so we can change that decsion in the future. Users of nsITableCellLayout * should refcount correctly as if this object is being ref counted, though * no actual support is under the hood. * * @author sclark */ class nsTableCellFrame : public nsHTMLContainerFrame, public nsITableCellLayout { public: // nsISupports NS_DECL_ISUPPORTS_INHERITED // default constructor supplied by the compiler NS_IMETHOD Init(nsIPresContext& aPresContext, nsIContent* aContent, nsIFrame* aParent, nsIStyleContext* aContext, nsIFrame* aPrevInFlow); void InitCellFrame(PRInt32 aColIndex); void SetBorderEdge(PRUint8 aSide, PRInt32 aRowIndex, PRInt32 aColIndex, nsBorderEdge *border, nscoord aOddAmountToAdd); void SetBorderEdgeLength(PRUint8 aSide, PRInt32 aIndex, nscoord aLength); /** instantiate a new instance of nsTableCellFrame. * @param aResult the new object is returned in this out-param * * @return NS_OK if the frame was properly allocated, otherwise an error code */ friend nsresult NS_NewTableCellFrame(nsIFrame*& aResult); NS_IMETHOD Paint(nsIPresContext& aPresContext, nsIRenderingContext& aRenderingContext, const nsRect& aDirtyRect, nsFramePaintLayer aWhichLayer); NS_IMETHOD Reflow(nsIPresContext& aPresContext, nsHTMLReflowMetrics& aDesiredSize, const nsHTMLReflowState& aReflowState, nsReflowStatus& aStatus); /** * Get the "type" of the frame * * @see nsLayoutAtoms::tableCellFrame */ NS_IMETHOD GetFrameType(nsIAtom** aType) const; NS_IMETHOD GetFrameName(nsString& aResult) const; virtual void VerticallyAlignChild(); /** * return the cell's specified row span. this is what was specified in the * content model or in the style info, and is always >= 1. * to get the effective row span (the actual value that applies), use GetEffectiveRowSpan() * @see nsTableFrame::GetEffectiveRowSpan() */ virtual PRInt32 GetRowSpan(); // there is no set row index because row index depends on the cell's parent row only /** * return the cell's starting row index (starting at 0 for the first row). * for continued cell frames the row index is that of the cell's first-in-flow */ virtual nsresult GetRowIndex(PRInt32 &aRowIndex); /** * return the cell's specified col span. this is what was specified in the * content model or in the style info, and is always >= 1. * to get the effective col span (the actual value that applies), use GetEffectiveColSpan() * @see nsTableFrame::GetEffectiveColSpan() */ virtual PRInt32 GetColSpan(); /** return the cell's column index (starting at 0 for the first column) */ virtual nsresult GetColIndex(PRInt32 &aColIndex); /** return the available width given to this frame during its last reflow */ virtual nscoord GetPriorAvailWidth(); /** set the available width given to this frame during its last reflow */ virtual void SetPriorAvailWidth(nscoord aPriorAvailWidth); /** return the desired size returned by this frame during its last reflow */ virtual nsSize GetDesiredSize(); /** set the desired size returned by this frame during its last reflow */ virtual void SetDesiredSize(const nsHTMLReflowMetrics & aDesiredSize); /** return the desired size returned by this frame during its last reflow */ virtual nsSize GetPass1DesiredSize(); /** set the desired size returned by this frame during its last reflow */ virtual void SetPass1DesiredSize(const nsHTMLReflowMetrics & aDesiredSize); /** return the MaxElement size returned by this frame during its last reflow * not counting reflows where MaxElementSize is not requested. * That is, the cell frame will always remember the last non-null MaxElementSize */ virtual nsSize GetPass1MaxElementSize(); /** set the MaxElement size returned by this frame during its last reflow. * should never be called with a null MaxElementSize */ virtual void SetPass1MaxElementSize(const nsSize & aMaxElementSize); void RecalcLayoutData(nsTableFrame* aTableFrame, nsVoidArray* aBoundaryCells[4]); NS_IMETHOD GetMargin(nsMargin& aMargin); PRBool GetContentEmpty(); void SetContentEmpty(PRBool aContentEmpty); // The collapse offset is (0,0) except for cells originating in a row/col which is collapsed void SetCollapseOffsetX(nscoord aXOffset); void SetCollapseOffsetY(nscoord aYOffset); nsPoint GetCollapseOffset(); protected: /** implement abstract method on nsHTMLContainerFrame */ virtual PRIntn GetSkipSides() const; private: // All these methods are support methods for RecalcLayoutData nsIFrame* GetFrameAt(nsVoidArray* aList, PRInt32 aIndex); nscoord GetMargin(nsIFrame* aFrame, PRUint8 aEdge) const; //XXX: aTableFrame can be removed as soon as border-collapse inherits correctly void GetCellBorder(nsMargin &aBorder, nsTableFrame *aTableFrame); PRUint8 GetOpposingEdge(PRUint8 aEdge); void CalculateBorders(nsTableFrame* aTableFrame, nsVoidArray* aBoundaryCells[4]); nscoord FindLargestMargin(nsVoidArray* aList,PRUint8 aEdge); void CalculateMargins(nsTableFrame* aTableFrame, nsVoidArray* aBoundaryCells[4]); protected: // Subclass hook for style post processing NS_IMETHOD DidSetStyleContext(nsIPresContext* aPresContext); void MapBorderMarginPadding(nsIPresContext* aPresContext); void MapHTMLBorderStyle(nsIPresContext* aPresContext, nsStyleSpacing& aSpacingStyle, nscoord aBorderWidth, nsTableFrame *aTableFrame); void MapVAlignAttribute(nsIPresContext* aPresContext, nsTableFrame *aTableFrame); void MapHAlignAttribute(nsIPresContext* aPresContext, nsTableFrame *aTableFrame); PRBool ConvertToPixelValue(nsHTMLValue& aValue, PRInt32 aDefault, PRInt32& aResult); NS_IMETHOD IR_StyleChanged(nsIPresContext& aPresContext, nsHTMLReflowMetrics& aDesiredSize, const nsHTMLReflowState& aReflowState, nsReflowStatus& aStatus); protected: /** the starting column for this cell */ int mColIndex; /** the available width we were given in our previous reflow */ nscoord mPriorAvailWidth; /** these are the last computed desired and max element sizes */ nsSize mDesiredSize; nsSize mMaxElementSize; /** these are the Pass 1 unconstrained desired and max element sizes */ nsSize mPass1DesiredSize; nsSize mPass1MaxElementSize; nsresult mCalculated; nsMargin mMargin; PRBool mIsContentEmpty; // PR_TRUE if the cell's contents take up no space //XXX: mIsContentEmpty should get yanked in favor of using free a bit on the frame base class // the FrameState slot (mState; GetFrameState/SetFrameState) nsPoint mCollapseOffset; public: nsBorderEdges mBorderEdges; // one list of border segments for each side of the table frame // used only for the collapsing border model }; inline nsresult nsTableCellFrame::GetRowIndex(PRInt32 &aRowIndex) { nsTableCellFrame* cell = (nsTableCellFrame*)GetFirstInFlow(); nsresult result; nsTableRowFrame * row; cell->GetParent((nsIFrame **)&row); if (nsnull!=row) { aRowIndex = row->GetRowIndex(); result = NS_OK; } else { aRowIndex = 0; result = NS_ERROR_NOT_INITIALIZED; } return result; } inline nsresult nsTableCellFrame::GetColIndex(PRInt32 &aColIndex) { aColIndex = mColIndex; return NS_OK; } inline nscoord nsTableCellFrame::GetPriorAvailWidth() { return mPriorAvailWidth;} inline void nsTableCellFrame::SetPriorAvailWidth(nscoord aPriorAvailWidth) { mPriorAvailWidth = aPriorAvailWidth;} inline nsSize nsTableCellFrame::GetDesiredSize() { return mDesiredSize; } inline void nsTableCellFrame::SetDesiredSize(const nsHTMLReflowMetrics & aDesiredSize) { mDesiredSize.width = aDesiredSize.width; mDesiredSize.height = aDesiredSize.height; } inline nsSize nsTableCellFrame::GetPass1DesiredSize() { return mPass1DesiredSize; } inline void nsTableCellFrame::SetPass1DesiredSize(const nsHTMLReflowMetrics & aDesiredSize) { mPass1DesiredSize.width = aDesiredSize.width; mPass1DesiredSize.height = aDesiredSize.height; } inline nsSize nsTableCellFrame::GetPass1MaxElementSize() { return mPass1MaxElementSize; } inline void nsTableCellFrame::SetPass1MaxElementSize(const nsSize & aMaxElementSize) { mPass1MaxElementSize.width = aMaxElementSize.width; mPass1MaxElementSize.height = aMaxElementSize.height; } inline void nsTableCellFrame::CalculateBorders(nsTableFrame* aTableFrame, nsVoidArray* aBoundaryCells[4]) { } inline NS_METHOD nsTableCellFrame::GetMargin(nsMargin& aMargin) { if (mCalculated == NS_OK) { aMargin = mMargin; return NS_OK; } return NS_ERROR_NOT_INITIALIZED; } inline PRBool nsTableCellFrame::GetContentEmpty() { return mIsContentEmpty; } inline void nsTableCellFrame::SetContentEmpty(PRBool aContentEmpty) { mIsContentEmpty = aContentEmpty; } #endif