/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ #ifndef nsTableCellFrame_h__ #define nsTableCellFrame_h__ #include "mozilla/Attributes.h" #include "nsITableCellLayout.h" #include "nscore.h" #include "nsContainerFrame.h" #include "nsTableRowFrame.h" // need to actually include this here to inline GetRowIndex #include "nsStyleContext.h" #include "nsIPercentHeightObserver.h" #include "nsGkAtoms.h" #include "nsLayoutUtils.h" #include "nsTArray.h" class nsTableFrame; /** * Additional frame-state bits */ #define NS_TABLE_CELL_CONTENT_EMPTY NS_FRAME_STATE_BIT(31) #define NS_TABLE_CELL_HAD_SPECIAL_REFLOW NS_FRAME_STATE_BIT(29) #define NS_TABLE_CELL_HAS_PCT_OVER_HEIGHT NS_FRAME_STATE_BIT(28) /** * 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 nsContainerFrame, public nsITableCellLayout, public nsIPercentHeightObserver { public: NS_DECL_QUERYFRAME_TARGET(nsTableCellFrame) NS_DECL_QUERYFRAME NS_DECL_FRAMEARENA_HELPERS // default constructor supplied by the compiler nsTableCellFrame(nsStyleContext* aContext); ~nsTableCellFrame(); NS_IMETHOD Init(nsIContent* aContent, nsIFrame* aParent, nsIFrame* aPrevInFlow); #ifdef ACCESSIBILITY virtual already_AddRefed CreateAccessible(); #endif NS_IMETHOD AttributeChanged(int32_t aNameSpaceID, nsIAtom* aAttribute, int32_t aModType); /** @see nsIFrame::DidSetStyleContext */ virtual void DidSetStyleContext(nsStyleContext* aOldStyleContext); // table cells contain a block frame which does most of the work, and // so these functions should never be called. They assert and return // NS_ERROR_NOT_IMPLEMENTED NS_IMETHOD AppendFrames(ChildListID aListID, nsFrameList& aFrameList) MOZ_OVERRIDE; NS_IMETHOD InsertFrames(ChildListID aListID, nsIFrame* aPrevFrame, nsFrameList& aFrameList) MOZ_OVERRIDE; NS_IMETHOD RemoveFrame(ChildListID aListID, nsIFrame* aOldFrame) MOZ_OVERRIDE; virtual nsIFrame* GetContentInsertionFrame() { return GetFirstPrincipalChild()->GetContentInsertionFrame(); } virtual nsMargin GetUsedMargin() const; virtual void NotifyPercentHeight(const nsHTMLReflowState& aReflowState); virtual bool NeedsToObserve(const nsHTMLReflowState& aReflowState) MOZ_OVERRIDE; /** instantiate a new instance of nsTableRowFrame. * @param aPresShell the pres shell for this frame * * @return the frame that was created */ friend nsIFrame* NS_NewTableCellFrame(nsIPresShell* aPresShell, nsStyleContext* aContext); NS_IMETHOD BuildDisplayList(nsDisplayListBuilder* aBuilder, const nsRect& aDirtyRect, const nsDisplayListSet& aLists) MOZ_OVERRIDE; void PaintCellBackground(nsRenderingContext& aRenderingContext, const nsRect& aDirtyRect, nsPoint aPt, uint32_t aFlags); virtual nscoord GetMinWidth(nsRenderingContext *aRenderingContext); virtual nscoord GetPrefWidth(nsRenderingContext *aRenderingContext); virtual IntrinsicWidthOffsetData IntrinsicWidthOffsets(nsRenderingContext* aRenderingContext); NS_IMETHOD Reflow(nsPresContext* aPresContext, nsHTMLReflowMetrics& aDesiredSize, const nsHTMLReflowState& aReflowState, nsReflowStatus& aStatus); /** * Get the "type" of the frame * * @see nsLayoutAtoms::tableCellFrame */ virtual nsIAtom* GetType() const; #ifdef DEBUG NS_IMETHOD GetFrameName(nsAString& aResult) const; #endif void VerticallyAlignChild(nscoord aMaxAscent); /* * Get the value of vertical-align adjusted for CSS 2's rules for a * table cell, which means the result is always * NS_STYLE_VERTICAL_ALIGN_{TOP,MIDDLE,BOTTOM,BASELINE}. */ uint8_t GetVerticalAlign() const; bool HasVerticalAlignBaseline() const { return GetVerticalAlign() == NS_STYLE_VERTICAL_ALIGN_BASELINE; } bool CellHasVisibleContent(nscoord height, nsTableFrame* tableFrame, nsIFrame* kidFrame); /** * Get the first-line baseline of the cell relative to its top border * edge, as if the cell were vertically aligned to the top of the row. */ nscoord GetCellBaseline() const; /** * 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 int32_t GetRowSpan(); // there is no set row index because row index depends on the cell's parent row only /*---------------- nsITableCellLayout methods ------------------------*/ /** * 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 * and the column index (starting at 0 for the first column */ NS_IMETHOD GetCellIndexes(int32_t &aRowIndex, int32_t &aColIndex); /** return the mapped cell's row index (starting at 0 for the first row) */ virtual nsresult GetRowIndex(int32_t &aRowIndex) const MOZ_OVERRIDE; /** * 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 int32_t GetColSpan(); /** return the cell's column index (starting at 0 for the first column) */ virtual nsresult GetColIndex(int32_t &aColIndex) const MOZ_OVERRIDE; void SetColIndex(int32_t aColIndex); /** return the available width given to this frame during its last reflow */ inline nscoord GetPriorAvailWidth(); /** set the available width given to this frame during its last reflow */ inline void SetPriorAvailWidth(nscoord aPriorAvailWidth); /** return the desired size returned by this frame during its last reflow */ inline nsSize GetDesiredSize(); /** set the desired size returned by this frame during its last reflow */ inline void SetDesiredSize(const nsHTMLReflowMetrics & aDesiredSize); bool GetContentEmpty(); void SetContentEmpty(bool aContentEmpty); bool HasPctOverHeight(); void SetHasPctOverHeight(bool aValue); nsTableCellFrame* GetNextCell() const; virtual nsMargin* GetBorderWidth(nsMargin& aBorder) const; virtual void PaintBackground(nsRenderingContext& aRenderingContext, const nsRect& aDirtyRect, nsPoint aPt, uint32_t aFlags); void DecorateForSelection(nsRenderingContext& aRenderingContext, nsPoint aPt); virtual bool UpdateOverflow(); virtual void InvalidateFrame() { nsIFrame::InvalidateFrame(); nsTableFrame *tableFrame = nsTableFrame::GetTableFrame(this); tableFrame->InvalidateFrame(); } protected: /** implement abstract method on nsContainerFrame */ virtual int GetSkipSides() const; /** * GetBorderOverflow says how far the cell's own borders extend * outside its own bounds. In the separated borders model this should * just be zero (as it is for most frames), but in the collapsed * borders model (for which nsBCTableCellFrame overrides this virtual * method), it considers the extents of the collapsed border. */ virtual nsMargin GetBorderOverflow(); friend class nsTableRowFrame; uint32_t mColIndex; // the starting column for this cell nscoord mPriorAvailWidth; // the avail width during the last reflow nsSize mDesiredSize; // the last desired width & height }; 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 bool nsTableCellFrame::GetContentEmpty() { return (mState & NS_TABLE_CELL_CONTENT_EMPTY) == NS_TABLE_CELL_CONTENT_EMPTY; } inline void nsTableCellFrame::SetContentEmpty(bool aContentEmpty) { if (aContentEmpty) { mState |= NS_TABLE_CELL_CONTENT_EMPTY; } else { mState &= ~NS_TABLE_CELL_CONTENT_EMPTY; } } inline bool nsTableCellFrame::HasPctOverHeight() { return (mState & NS_TABLE_CELL_HAS_PCT_OVER_HEIGHT) == NS_TABLE_CELL_HAS_PCT_OVER_HEIGHT; } inline void nsTableCellFrame::SetHasPctOverHeight(bool aValue) { if (aValue) { mState |= NS_TABLE_CELL_HAS_PCT_OVER_HEIGHT; } else { mState &= ~NS_TABLE_CELL_HAS_PCT_OVER_HEIGHT; } } // nsBCTableCellFrame class nsBCTableCellFrame : public nsTableCellFrame { public: NS_DECL_FRAMEARENA_HELPERS nsBCTableCellFrame(nsStyleContext* aContext); ~nsBCTableCellFrame(); virtual nsIAtom* GetType() const MOZ_OVERRIDE; virtual nsMargin GetUsedBorder() const; virtual bool GetBorderRadii(nscoord aRadii[8]) const; // Get the *inner half of the border only*, in twips. virtual nsMargin* GetBorderWidth(nsMargin& aBorder) const MOZ_OVERRIDE; // Get the *inner half of the border only*, in pixels. BCPixelSize GetBorderWidth(mozilla::css::Side aSide) const; // Set the full (both halves) width of the border void SetBorderWidth(mozilla::css::Side aSide, BCPixelSize aPixelValue); virtual nsMargin GetBorderOverflow() MOZ_OVERRIDE; #ifdef DEBUG NS_IMETHOD GetFrameName(nsAString& aResult) const MOZ_OVERRIDE; #endif virtual void PaintBackground(nsRenderingContext& aRenderingContext, const nsRect& aDirtyRect, nsPoint aPt, uint32_t aFlags) MOZ_OVERRIDE; private: // These are the entire width of the border (the cell edge contains only // the inner half, per the macros in nsTablePainter.h). BCPixelSize mTopBorder; BCPixelSize mRightBorder; BCPixelSize mBottomBorder; BCPixelSize mLeftBorder; }; #endif