/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* ***** BEGIN LICENSE BLOCK ***** * Version: MPL 1.1/GPL 2.0/LGPL 2.1 * * The contents of this file are subject to the Mozilla Public License Version * 1.1 (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/MPL/ * * 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.org code. * * The Initial Developer of the Original Code is * Netscape Communications Corporation. * Portions created by the Initial Developer are Copyright (C) 1998 * the Initial Developer. All Rights Reserved. * * Contributor(s): * * Alternatively, the contents of this file may be used under the terms of * either of the GNU General Public License Version 2 or later (the "GPL"), * or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), * in which case the provisions of the GPL or the LGPL are applicable instead * of those above. If you wish to allow use of your version of this file only * under the terms of either the GPL or the LGPL, and not to allow others to * use your version of this file under the terms of the MPL, indicate your * decision by deleting the provisions above and replace them with the notice * and other provisions required by the GPL or the LGPL. If you do not delete * the provisions above, a recipient may use your version of this file under * the terms of any one of the MPL, the GPL or the LGPL. * * ***** END LICENSE BLOCK ***** */ #include "nsTableRowFrame.h" #include "nsTableRowGroupFrame.h" #include "nsIRenderingContext.h" #include "nsIPresShell.h" #include "nsPresContext.h" #include "nsStyleContext.h" #include "nsStyleConsts.h" #include "nsHTMLAtoms.h" #include "nsIContent.h" #include "nsTableFrame.h" #include "nsTableCellFrame.h" #include "nsIView.h" #include "nsReflowPath.h" #include "nsCSSRendering.h" #include "nsLayoutAtoms.h" #include "nsHTMLParts.h" #include "nsTableColGroupFrame.h" #include "nsTableColFrame.h" #include "nsCOMPtr.h" #include "nsDisplayList.h" struct nsTableCellReflowState : public nsHTMLReflowState { nsTableCellReflowState(nsPresContext* aPresContext, const nsHTMLReflowState& aParentReflowState, nsIFrame* aFrame, const nsSize& aAvailableSpace, nsReflowReason aReason); void FixUp(const nsSize& aAvailSpace, PRBool aResetComputedWidth); }; nsTableCellReflowState::nsTableCellReflowState(nsPresContext* aPresContext, const nsHTMLReflowState& aParentRS, nsIFrame* aFrame, const nsSize& aAvailSpace, nsReflowReason aReason) :nsHTMLReflowState(aPresContext, aParentRS, aFrame, aAvailSpace, aReason) { } void nsTableCellReflowState::FixUp(const nsSize& aAvailSpace, PRBool aResetComputedWidth) { // fix the mComputed values during a pass 2 reflow since the cell can be a percentage base if (NS_UNCONSTRAINEDSIZE != aAvailSpace.width) { if (aResetComputedWidth) { mComputedWidth = NS_UNCONSTRAINEDSIZE; } else if (NS_UNCONSTRAINEDSIZE != mComputedWidth) { mComputedWidth = aAvailSpace.width - mComputedBorderPadding.left - mComputedBorderPadding.right; mComputedWidth = PR_MAX(0, mComputedWidth); } if (NS_UNCONSTRAINEDSIZE != mComputedHeight) { if (NS_UNCONSTRAINEDSIZE != aAvailSpace.height) { mComputedHeight = aAvailSpace.height - mComputedBorderPadding.top - mComputedBorderPadding.bottom; mComputedHeight = PR_MAX(0, mComputedHeight); } } } } void nsTableRowFrame::InitChildReflowState(nsPresContext& aPresContext, const nsSize& aAvailSize, PRBool aBorderCollapse, float aPixelsToTwips, nsTableCellReflowState& aReflowState, PRBool aResetComputedWidth) { nsMargin collapseBorder; nsMargin* pCollapseBorder = nsnull; if (aBorderCollapse) { // we only reflow cells, so don't need to check frame type nsBCTableCellFrame* bcCellFrame = (nsBCTableCellFrame*)aReflowState.frame; if (bcCellFrame) { pCollapseBorder = bcCellFrame->GetBorderWidth(aPixelsToTwips, collapseBorder); } } aReflowState.Init(&aPresContext, -1, -1, pCollapseBorder); aReflowState.FixUp(aAvailSize, aResetComputedWidth); } void nsTableRowFrame::SetFixedHeight(nscoord aValue) { nscoord height = PR_MAX(0, aValue); if (HasFixedHeight()) { if (height > mStyleFixedHeight) { mStyleFixedHeight = height; } } else { mStyleFixedHeight = height; if (height > 0) { SetHasFixedHeight(PR_TRUE); } } } void nsTableRowFrame::SetPctHeight(float aPctValue, PRBool aForce) { nscoord height = PR_MAX(0, NSToCoordRound(aPctValue * 100.0f)); if (HasPctHeight()) { if ((height > mStylePctHeight) || aForce) { mStylePctHeight = height; } } else { mStylePctHeight = height; if (height > 0.0f) { SetHasPctHeight(PR_TRUE); } } } // 'old' is old cached cell's desired size // 'new' is new cell's size including style constraints static PRBool TallestCellGotShorter(nscoord aOld, nscoord aNew, nscoord aTallest) { return ((aNew < aOld) && (aOld == aTallest)); } /* ----------- nsTableRowFrame ---------- */ nsTableRowFrame::nsTableRowFrame(nsStyleContext* aContext) : nsHTMLContainerFrame(aContext) { mBits.mRowIndex = mBits.mFirstInserted = 0; ResetHeight(0); #ifdef DEBUG_TABLE_REFLOW_TIMING mTimer = new nsReflowTimer(this); #endif } nsTableRowFrame::~nsTableRowFrame() { #ifdef DEBUG_TABLE_REFLOW_TIMING nsTableFrame::DebugReflowDone(this); #endif } NS_IMETHODIMP nsTableRowFrame::Init(nsIContent* aContent, nsIFrame* aParent, nsIFrame* aPrevInFlow) { nsresult rv; // Let the base class do its initialization rv = nsHTMLContainerFrame::Init(aContent, aParent, aPrevInFlow); // record that children that are ignorable whitespace should be excluded mState |= NS_FRAME_EXCLUDE_IGNORABLE_WHITESPACE; if (aPrevInFlow) { // Set the row index nsTableRowFrame* rowFrame = (nsTableRowFrame*)aPrevInFlow; SetRowIndex(rowFrame->GetRowIndex()); } return rv; } NS_IMETHODIMP nsTableRowFrame::AppendFrames(nsIAtom* aListName, nsIFrame* aFrameList) { NS_ASSERTION(!aListName, "unexpected child list"); // Append the frames mFrames.AppendFrames(nsnull, aFrameList); // Add the new cell frames to the table nsTableFrame *tableFrame = nsTableFrame::GetTableFrame(this); for (nsIFrame* childFrame = aFrameList; childFrame; childFrame = childFrame->GetNextSibling()) { if (IS_TABLE_CELL(childFrame->GetType())) { // Add the cell to the cell map tableFrame->AppendCell((nsTableCellFrame&)*childFrame, GetRowIndex()); // XXX this could be optimized with some effort tableFrame->SetNeedStrategyInit(PR_TRUE); } } // Reflow the new frames. They're already marked dirty, so generate a reflow // command that tells us to reflow our dirty child frames tableFrame->AppendDirtyReflowCommand(this); return NS_OK; } NS_IMETHODIMP nsTableRowFrame::InsertFrames(nsIAtom* aListName, nsIFrame* aPrevFrame, nsIFrame* aFrameList) { NS_ASSERTION(!aListName, "unexpected child list"); NS_ASSERTION(!aPrevFrame || aPrevFrame->GetParent() == this, "inserting after sibling frame with different parent"); // Get the table frame nsTableFrame* tableFrame = nsTableFrame::GetTableFrame(this); // gather the new frames (only those which are cells) into an array nsIAtom* cellFrameType = (tableFrame->IsBorderCollapse()) ? nsLayoutAtoms::bcTableCellFrame : nsLayoutAtoms::tableCellFrame; nsTableCellFrame* prevCellFrame = (nsTableCellFrame *)nsTableFrame::GetFrameAtOrBefore(this, aPrevFrame, cellFrameType); nsVoidArray cellChildren; for (nsIFrame* childFrame = aFrameList; childFrame; childFrame = childFrame->GetNextSibling()) { if (IS_TABLE_CELL(childFrame->GetType())) { cellChildren.AppendElement(childFrame); // XXX this could be optimized with some effort tableFrame->SetNeedStrategyInit(PR_TRUE); } } // insert the cells into the cell map PRInt32 colIndex = -1; if (prevCellFrame) { prevCellFrame->GetColIndex(colIndex); } tableFrame->InsertCells(cellChildren, GetRowIndex(), colIndex); // Insert the frames in the frame list mFrames.InsertFrames(nsnull, aPrevFrame, aFrameList); // Reflow the new frames. They're already marked dirty, so generate a reflow // command that tells us to reflow our dirty child frames tableFrame->AppendDirtyReflowCommand(this); return NS_OK; } NS_IMETHODIMP nsTableRowFrame::RemoveFrame(nsIAtom* aListName, nsIFrame* aOldFrame) { NS_ASSERTION(!aListName, "unexpected child list"); nsTableFrame* tableFrame = nsTableFrame::GetTableFrame(this); if (tableFrame) { if (IS_TABLE_CELL(aOldFrame->GetType())) { nsTableCellFrame* cellFrame = (nsTableCellFrame*)aOldFrame; PRInt32 colIndex; cellFrame->GetColIndex(colIndex); // remove the cell from the cell map tableFrame->RemoveCell(cellFrame, GetRowIndex()); // XXX this could be optimized with some effort tableFrame->SetNeedStrategyInit(PR_TRUE); // Remove the frame and destroy it mFrames.DestroyFrame(aOldFrame); // XXX This could probably be optimized with much effort tableFrame->SetNeedStrategyInit(PR_TRUE); // Generate a reflow command so we reflow the table itself. // Target the row so that it gets a dirty reflow before a resize reflow // in case another cell gets added to the row during a reflow coallesce. tableFrame->AppendDirtyReflowCommand(this); } else { NS_ERROR("unexpected frame type"); return NS_ERROR_INVALID_ARG; } } return NS_OK; } nscoord GetHeightOfRowsSpannedBelowFirst(nsTableCellFrame& aTableCellFrame, nsTableFrame& aTableFrame) { nscoord height = 0; nscoord cellSpacingY = aTableFrame.GetCellSpacingY(); PRInt32 rowSpan = aTableFrame.GetEffectiveRowSpan(aTableCellFrame); // add in height of rows spanned beyond the 1st one nsIFrame* nextRow = aTableCellFrame.GetParent()->GetNextSibling(); for (PRInt32 rowX = 1; ((rowX < rowSpan) && nextRow);) { if (nsLayoutAtoms::tableRowFrame == nextRow->GetType()) { height += nextRow->GetSize().height; rowX++; } height += cellSpacingY; nextRow = nextRow->GetNextSibling(); } return height; } nsTableCellFrame* nsTableRowFrame::GetFirstCell() { nsIFrame* childFrame = mFrames.FirstChild(); while (childFrame) { if (IS_TABLE_CELL(childFrame->GetType())) { return (nsTableCellFrame*)childFrame; } childFrame = childFrame->GetNextSibling(); } return nsnull; } /** * Post-reflow hook. This is where the table row does its post-processing */ void nsTableRowFrame::DidResize(const nsHTMLReflowState& aReflowState) { // Resize and re-align the cell frames based on our row height nsTableFrame* tableFrame = nsTableFrame::GetTableFrame(this); if (!tableFrame) return; nsTableIterator iter(*this, eTableDIR); nsIFrame* childFrame = iter.First(); nsHTMLReflowMetrics desiredSize(PR_FALSE); desiredSize.width = mRect.width; desiredSize.height = mRect.height; desiredSize.mOverflowArea = nsRect(0, 0, desiredSize.width, desiredSize.height); while (childFrame) { if (IS_TABLE_CELL(childFrame->GetType())) { nsTableCellFrame* cellFrame = (nsTableCellFrame*)childFrame; nscoord cellHeight = mRect.height + GetHeightOfRowsSpannedBelowFirst(*cellFrame, *tableFrame); // resize the cell's height //if (cellFrameSize.height!=cellHeight) { // XXX If the cell frame has a view, then we need to resize // it as well. We would like to only do that if the cell's size // is changing. Why is the 'if' stmt above commented out? cellFrame->SetSize(nsSize(cellFrame->GetSize().width, cellHeight)); // realign cell content based on the new height /*nsHTMLReflowMetrics desiredSize(nsnull); nsHTMLReflowState kidReflowState(aPresContext, aReflowState, cellFrame, nsSize(cellFrameSize.width, cellHeight), eReflowReason_Resize);*/ //XXX: the following reflow is necessary for any content of the cell // whose height is a percent of the cell's height (maybe indirectly.) // But some content crashes when this reflow is issued, to be investigated //XXX nsReflowStatus status; //ReflowChild(cellFrame, aPresContext, desiredSize, kidReflowState, status); cellFrame->VerticallyAlignChild(aReflowState, mMaxCellAscent); ConsiderChildOverflow(desiredSize.mOverflowArea, cellFrame); } } // Get the next child childFrame = iter.Next(); } FinishAndStoreOverflow(&desiredSize); if (HasView()) { nsContainerFrame::SyncFrameViewAfterReflow(GetPresContext(), this, GetView(), &desiredSize.mOverflowArea, 0); } // Let our base class do the usual work } // returns max-ascent amongst all cells that have 'vertical-align: baseline' // *including* cells with rowspans nscoord nsTableRowFrame::GetMaxCellAscent() const { return mMaxCellAscent; } nscoord nsTableRowFrame::GetAscent() { if(mMaxCellAscent) return mMaxCellAscent; // If we don't have a baseline on any of the cells we go for the lowest // content edge of the inner block frames. // Every table cell has a cell frame with its border and padding. Inside // the cell is a block frame. The cell is as high as the tallest cell in // the parent row. As a consequence the block frame might not touch both // the top and the bottom padding of it parent cell frame at the same time. // // bbbbbbbbbbbbbbbbbb cell border: b // bppppppppppppppppb cell padding: p // bpxxxxxxxxxxxxxxpb inner block: x // bpx xpb // bpx xpb // bpx xpb // bpxxxxxxxxxxxxxxpb base line // bp pb // bp pb // bppppppppppppppppb // bbbbbbbbbbbbbbbbbb nsTableIterator iter(*this, eTableDIR); nsIFrame* childFrame = iter.First(); nscoord ascent = 0; while (childFrame) { if (IS_TABLE_CELL(childFrame->GetType())) { nsIFrame* firstKid = childFrame->GetFirstChild(nsnull); ascent = PR_MAX(ascent, firstKid->GetRect().YMost()); } // Get the next child childFrame = iter.Next(); } return ascent; } nscoord nsTableRowFrame::GetHeight(nscoord aPctBasis) const { nscoord height = 0; if ((aPctBasis > 0) && HasPctHeight()) { height = NSToCoordRound(GetPctHeight() * (float)aPctBasis); } if (HasFixedHeight()) { height = PR_MAX(height, GetFixedHeight()); } return PR_MAX(height, GetContentHeight()); } void nsTableRowFrame::ResetHeight(nscoord aFixedHeight) { SetHasFixedHeight(PR_FALSE); SetHasPctHeight(PR_FALSE); SetFixedHeight(0); SetPctHeight(0); SetContentHeight(0); if (aFixedHeight > 0) { SetFixedHeight(aFixedHeight); } mMaxCellAscent = 0; mMaxCellDescent = 0; } void nsTableRowFrame::UpdateHeight(nscoord aHeight, nscoord aAscent, nscoord aDescent, nsTableFrame* aTableFrame, nsTableCellFrame* aCellFrame) { if (!aTableFrame || !aCellFrame) { NS_ASSERTION(PR_FALSE , "invalid call"); return; } if (aHeight != NS_UNCONSTRAINEDSIZE) { if (!(aCellFrame->HasVerticalAlignBaseline())) { // only the cell's height matters if (GetHeight() < aHeight) { PRInt32 rowSpan = aTableFrame->GetEffectiveRowSpan(*aCellFrame); if (rowSpan == 1) { SetContentHeight(aHeight); } } } else { // the alignment on the baseline can change the height NS_ASSERTION((aAscent != NS_UNCONSTRAINEDSIZE) && (aDescent != NS_UNCONSTRAINEDSIZE), "invalid call"); // see if this is a long ascender if (mMaxCellAscent < aAscent) { mMaxCellAscent = aAscent; } // see if this is a long descender and without rowspan if (mMaxCellDescent < aDescent) { PRInt32 rowSpan = aTableFrame->GetEffectiveRowSpan(*aCellFrame); if (rowSpan == 1) { mMaxCellDescent = aDescent; } } // keep the tallest height in sync if (GetHeight() < mMaxCellAscent + mMaxCellDescent) { SetContentHeight(mMaxCellAscent + mMaxCellDescent); } } } } nscoord nsTableRowFrame::CalcHeight(const nsHTMLReflowState& aReflowState) { nsTableFrame* tableFrame = nsTableFrame::GetTableFrame(this); if (!tableFrame) return 0; nscoord computedHeight = (NS_UNCONSTRAINEDSIZE == aReflowState.mComputedHeight) ? 0 : aReflowState.mComputedHeight; ResetHeight(computedHeight); const nsStylePosition* position = GetStylePosition(); if (eStyleUnit_Coord == position->mHeight.GetUnit()) { SetFixedHeight(position->mHeight.GetCoordValue()); } else if (eStyleUnit_Percent == position->mHeight.GetUnit()) { SetPctHeight(position->mHeight.GetPercentValue()); } for (nsIFrame* kidFrame = mFrames.FirstChild(); kidFrame; kidFrame = kidFrame->GetNextSibling()) { if (IS_TABLE_CELL(kidFrame->GetType())) { nscoord availWidth = ((nsTableCellFrame *)kidFrame)->GetPriorAvailWidth(); nsSize desSize = ((nsTableCellFrame *)kidFrame)->GetDesiredSize(); if ((NS_UNCONSTRAINEDSIZE == aReflowState.availableHeight) && !GetPrevInFlow()) { CalculateCellActualSize(kidFrame, desSize.width, desSize.height, availWidth); } // height may have changed, adjust descent to absorb any excess difference nscoord ascent; if (!kidFrame->GetFirstChild(nsnull)->GetFirstChild(nsnull)) ascent = desSize.height; else ascent = ((nsTableCellFrame *)kidFrame)->GetDesiredAscent(); nscoord descent = desSize.height - ascent; UpdateHeight(desSize.height, ascent, descent, tableFrame, (nsTableCellFrame*)kidFrame); } } return GetHeight(); } /** * We need a custom display item for table row backgrounds. This is only used * when the table row is the root of a stacking context (e.g., has 'opacity'). * Table row backgrounds can extend beyond the row frame bounds, when * the row contains row-spanning cells. */ class nsDisplayTableRowBackground : public nsDisplayItem { public: nsDisplayTableRowBackground(nsTableRowFrame* aFrame) : nsDisplayItem(aFrame) { MOZ_COUNT_CTOR(nsDisplayTableRowBackground); } #ifdef NS_BUILD_REFCNT_LOGGING virtual ~nsDisplayTableRowBackground() { MOZ_COUNT_DTOR(nsDisplayTableRowBackground); } #endif virtual nsRect GetBounds(nsDisplayListBuilder* aBuilder) { // the overflow rect contains any row-spanning cells, so it contains // our background. Note that this means we may not be opaque even if // the background style is a solid color. return NS_STATIC_CAST(nsTableRowFrame*, mFrame)->GetOverflowRect() + aBuilder->ToReferenceFrame(mFrame); } virtual void Paint(nsDisplayListBuilder* aBuilder, nsIRenderingContext* aCtx, const nsRect& aDirtyRect); NS_DISPLAY_DECL_NAME("TableRowBackground") }; void nsDisplayTableRowBackground::Paint(nsDisplayListBuilder* aBuilder, nsIRenderingContext* aCtx, const nsRect& aDirtyRect) { nsTableFrame* tableFrame = nsTableFrame::GetTableFrame(mFrame); nsPoint pt = aBuilder->ToReferenceFrame(mFrame); nsIRenderingContext::AutoPushTranslation translate(aCtx, pt.x, pt.y); TableBackgroundPainter painter(tableFrame, TableBackgroundPainter::eOrigin_TableRow, mFrame->GetPresContext(), *aCtx, aDirtyRect - pt); painter.PaintRow(NS_STATIC_CAST(nsTableRowFrame*, mFrame)); } NS_IMETHODIMP nsTableRowFrame::BuildDisplayList(nsDisplayListBuilder* aBuilder, const nsRect& aDirtyRect, const nsDisplayListSet& aLists) { if (!IsVisibleInSelection(aBuilder)) return NS_OK; PRBool isRoot = aBuilder->IsAtRootOfPseudoStackingContext(); if (isRoot) { // This background is created regardless of whether this frame is // visible or not. Visibility decisions are delegated to the // table background painter. // We would use nsDisplayGeneric for this rare case except that we // need the background to be larger than the row frame in some // cases. nsresult rv = aLists.BorderBackground()->AppendNewToTop(new (aBuilder) nsDisplayTableRowBackground(this)); NS_ENSURE_SUCCESS(rv, rv); } return nsTableFrame::DisplayGenericTablePart(aBuilder, this, aDirtyRect, aLists, isRoot); } PRIntn nsTableRowFrame::GetSkipSides() const { PRIntn skip = 0; if (nsnull != GetPrevInFlow()) { skip |= 1 << NS_SIDE_TOP; } if (nsnull != GetNextInFlow()) { skip |= 1 << NS_SIDE_BOTTOM; } return skip; } // Calculate the cell's actual size given its pass2 desired width and height. // Takes into account the specified height (in the style), and any special logic // needed for backwards compatibility. // Modifies the desired width and height that are passed in. nsresult nsTableRowFrame::CalculateCellActualSize(nsIFrame* aCellFrame, nscoord& aDesiredWidth, nscoord& aDesiredHeight, nscoord aAvailWidth) { nscoord specifiedHeight = 0; // Get the height specified in the style information const nsStylePosition* position = aCellFrame->GetStylePosition(); nsTableFrame* tableFrame = nsTableFrame::GetTableFrame(this); if (!tableFrame) return NS_ERROR_NULL_POINTER; PRInt32 rowSpan = tableFrame->GetEffectiveRowSpan((nsTableCellFrame&)*aCellFrame); switch (position->mHeight.GetUnit()) { case eStyleUnit_Coord: specifiedHeight = position->mHeight.GetCoordValue(); if (1 == rowSpan) SetFixedHeight(specifiedHeight); break; case eStyleUnit_Percent: { if (1 == rowSpan) SetPctHeight(position->mHeight.GetPercentValue()); // pct heights are handled when all of the cells are finished, so don't set specifiedHeight break; } case eStyleUnit_Auto: default: break; } // If the specified height is greater than the desired height, then use the specified height if (specifiedHeight > aDesiredHeight) aDesiredHeight = specifiedHeight; if ((0 == aDesiredWidth) && (NS_UNCONSTRAINEDSIZE != aAvailWidth)) { // special Nav4 compatibility code for the width aDesiredWidth = aAvailWidth; } return NS_OK; } // Calculates the available width for the table cell based on the known // column widths taking into account column spans and column spacing static void CalcAvailWidth(nsTableFrame& aTableFrame, nscoord aTableComputedWidth, float aPixelToTwips, nsTableCellFrame& aCellFrame, nscoord aCellSpacingX, nscoord& aColAvailWidth, nscoord& aCellAvailWidth) { aColAvailWidth = aCellAvailWidth = NS_UNCONSTRAINEDSIZE; PRInt32 colIndex; aCellFrame.GetColIndex(colIndex); PRInt32 colspan = aTableFrame.GetEffectiveColSpan(aCellFrame); nscoord cellSpacing = 0; for (PRInt32 spanX = 0; spanX < colspan; spanX++) { nscoord colWidth = aTableFrame.GetColumnWidth(colIndex + spanX); if (colWidth != WIDTH_NOT_SET) { if (NS_UNCONSTRAINEDSIZE == aColAvailWidth) { aColAvailWidth = colWidth; } else { aColAvailWidth += colWidth; } } if ((spanX > 0) && (aTableFrame.GetNumCellsOriginatingInCol(colIndex + spanX) > 0)) { cellSpacing += aCellSpacingX; } } if (NS_UNCONSTRAINEDSIZE != aColAvailWidth) { aColAvailWidth += cellSpacing; } aCellAvailWidth = aColAvailWidth; // for a cell with a colspan > 1, use its fix width (if set) as the avail width // if this is its initial reflow if ((aCellFrame.GetStateBits() & NS_FRAME_FIRST_REFLOW) && (aTableFrame.GetEffectiveColSpan(aCellFrame) > 1)) { // see if the cell has a style width specified const nsStylePosition* cellPosition = aCellFrame.GetStylePosition(); if (eStyleUnit_Coord == cellPosition->mWidth.GetUnit()) { // need to add padding into fixed width nsMargin borderPadding(0,0,0,0); if (NS_UNCONSTRAINEDSIZE != aTableComputedWidth) { borderPadding = nsTableFrame::GetBorderPadding(nsSize(aTableComputedWidth, 0), aPixelToTwips, &aCellFrame); } nscoord fixWidth = cellPosition->mWidth.GetCoordValue() + borderPadding.left + borderPadding.right; if (NS_UNCONSTRAINEDSIZE != aColAvailWidth) { aCellAvailWidth = PR_MIN(aColAvailWidth, fixWidth); } else { aCellAvailWidth = fixWidth; } } } } nscoord GetSpaceBetween(PRInt32 aPrevColIndex, PRInt32 aColIndex, PRInt32 aColSpan, nsTableFrame& aTableFrame, nscoord aCellSpacingX, PRBool aIsLeftToRight, PRBool aCheckVisibility) { nscoord space = 0; PRInt32 colX; if (aIsLeftToRight) { for (colX = aPrevColIndex + 1; aColIndex > colX; colX++) { PRBool isCollapsed = PR_FALSE; if (!aCheckVisibility) { space += aTableFrame.GetColumnWidth(colX); } else { nsTableColFrame* colFrame = aTableFrame.GetColFrame(colX); const nsStyleVisibility* colVis = colFrame->GetStyleVisibility(); PRBool collapseCol = (NS_STYLE_VISIBILITY_COLLAPSE == colVis->mVisible); nsIFrame* cgFrame = colFrame->GetParent(); const nsStyleVisibility* groupVis = cgFrame->GetStyleVisibility(); PRBool collapseGroup = (NS_STYLE_VISIBILITY_COLLAPSE == groupVis->mVisible); isCollapsed = collapseCol || collapseGroup; if (!isCollapsed) space += aTableFrame.GetColumnWidth(colX); } if (!isCollapsed && (aTableFrame.GetNumCellsOriginatingInCol(colX) > 0)) { space += aCellSpacingX; } } } else { PRInt32 lastCol = aColIndex + aColSpan - 1; for (colX = aPrevColIndex - 1; colX > lastCol; colX--) { PRBool isCollapsed = PR_FALSE; if (!aCheckVisibility) { space += aTableFrame.GetColumnWidth(colX); } else { nsTableColFrame* colFrame = aTableFrame.GetColFrame(colX); const nsStyleVisibility* colVis = colFrame->GetStyleVisibility(); PRBool collapseCol = (NS_STYLE_VISIBILITY_COLLAPSE == colVis->mVisible); nsIFrame* cgFrame = colFrame->GetParent(); const nsStyleVisibility* groupVis = cgFrame->GetStyleVisibility(); PRBool collapseGroup = (NS_STYLE_VISIBILITY_COLLAPSE == groupVis->mVisible); isCollapsed = collapseCol || collapseGroup; if (!isCollapsed) space += aTableFrame.GetColumnWidth(colX); } if (!isCollapsed && (aTableFrame.GetNumCellsOriginatingInCol(colX) > 0)) { space += aCellSpacingX; } } } return space; } static nscoord GetComputedWidth(const nsHTMLReflowState& aReflowState, nsTableFrame& aTableFrame) { const nsHTMLReflowState* parentReflow = aReflowState.parentReflowState; nscoord computedWidth = 0; while (parentReflow) { if (parentReflow->frame == &aTableFrame) { computedWidth = parentReflow->mComputedWidth; break; } parentReflow = parentReflow->parentReflowState; } return computedWidth; } // subtract the heights of aRow's prev in flows from the unpaginated height static nscoord CalcHeightFromUnpaginatedHeight(nsPresContext* aPresContext, nsTableRowFrame& aRow) { nscoord height = 0; nsTableRowFrame* firstInFlow = (nsTableRowFrame*)aRow.GetFirstInFlow(); if (!firstInFlow) ABORT1(0); if (firstInFlow->HasUnpaginatedHeight()) { height = firstInFlow->GetUnpaginatedHeight(aPresContext); for (nsIFrame* prevInFlow = aRow.GetPrevInFlow(); prevInFlow; prevInFlow = prevInFlow->GetPrevInFlow()) { height -= prevInFlow->GetSize().height; } } return PR_MAX(height, 0); } // Called for a dirty or resize reflow. Reflows all the existing table cell // frames unless aDirtyOnly is PR_TRUE in which case only reflow the dirty frames NS_METHOD nsTableRowFrame::ReflowChildren(nsPresContext* aPresContext, nsHTMLReflowMetrics& aDesiredSize, const nsHTMLReflowState& aReflowState, nsTableFrame& aTableFrame, nsReflowStatus& aStatus, PRBool aDirtyOnly) { aStatus = NS_FRAME_COMPLETE; GET_PIXELS_TO_TWIPS(aPresContext, p2t); PRBool borderCollapse = (((nsTableFrame*)aTableFrame.GetFirstInFlow())->IsBorderCollapse()); nsIFrame* tablePrevInFlow = aTableFrame.GetPrevInFlow(); PRBool isPaginated = aPresContext->IsPaginated(); nsresult rv = NS_OK; nscoord cellSpacingX = aTableFrame.GetCellSpacingX(); PRInt32 cellColSpan = 1; // must be defined here so it's set properly for non-cell kids nsTableIteration dir = (aReflowState.availableWidth == NS_UNCONSTRAINEDSIZE) ? eTableLTR : eTableDIR; nsTableIterator iter(*this, dir); // remember the col index of the previous cell to handle rowspans into this row PRInt32 firstPrevColIndex = (iter.IsLeftToRight()) ? -1 : aTableFrame.GetColCount(); PRInt32 prevColIndex = firstPrevColIndex; nscoord x = 0; // running total of children x offset PRBool isAutoLayout = aTableFrame.IsAutoLayout(); PRBool needToNotifyTable = PR_TRUE; nscoord paginatedHeight = 0; // If the incremental reflow command is a StyleChanged reflow and // it's target is the current frame, then make sure we send // StyleChange reflow reasons down to the children so that they // don't over-optimize their reflow. PRBool notifyStyleChange = PR_FALSE; if (eReflowReason_Incremental == aReflowState.reason) { nsHTMLReflowCommand* command = aReflowState.path->mReflowCommand; if (command) { nsReflowType type; command->GetType(type); if (eReflowType_StyleChanged == type) { notifyStyleChange = PR_TRUE; } } } // Reflow each of our existing cell frames nsIFrame* kidFrame = iter.First(); while (kidFrame) { nsIAtom* frameType = kidFrame->GetType(); // See if we should only reflow the dirty child frames PRBool doReflowChild = PR_TRUE; if (aDirtyOnly && ((kidFrame->GetStateBits() & NS_FRAME_IS_DIRTY) == 0)) { doReflowChild = PR_FALSE; } else if ((NS_UNCONSTRAINEDSIZE != aReflowState.availableHeight) && IS_TABLE_CELL(frameType)) { // We don't reflow a rowspan >1 cell here with a constrained height. // That happens in nsTableRowGroupFrame::SplitSpanningCells. if (aTableFrame.GetEffectiveRowSpan((nsTableCellFrame&)*kidFrame) > 1) { doReflowChild = PR_FALSE; } } if (aReflowState.mFlags.mSpecialHeightReflow) { if (!isPaginated && (IS_TABLE_CELL(frameType) && !((nsTableCellFrame*)kidFrame)->NeedSpecialReflow())) { kidFrame = iter.Next(); continue; } } // Reflow the child frame if (doReflowChild) { if (IS_TABLE_CELL(frameType)) { nsTableCellFrame* cellFrame = (nsTableCellFrame*)kidFrame; PRInt32 cellColIndex; cellFrame->GetColIndex(cellColIndex); cellColSpan = aTableFrame.GetEffectiveColSpan(*cellFrame); // If the adjacent cell is in a prior row (because of a rowspan) add in the space if ((iter.IsLeftToRight() && (prevColIndex != (cellColIndex - 1))) || (!iter.IsLeftToRight() && (prevColIndex != cellColIndex + cellColSpan))) { x += GetSpaceBetween(prevColIndex, cellColIndex, cellColSpan, aTableFrame, cellSpacingX, iter.IsLeftToRight(), PR_FALSE); } // Calculate the available width for the table cell using the known column widths nscoord availColWidth, availCellWidth; CalcAvailWidth(aTableFrame, GetComputedWidth(aReflowState, aTableFrame), p2t, *cellFrame, cellSpacingX, availColWidth, availCellWidth); // remember the rightmost (ltr) or leftmost (rtl) column this cell spans into prevColIndex = (iter.IsLeftToRight()) ? cellColIndex + (cellColSpan - 1) : cellColIndex; // always request MEW. Since we may turn MEW on for selected cells during incremental // reflow, we need to request MEW *now* so that those incremental reflows will be // able to build on existing MEW data in the children. nsHTMLReflowMetrics desiredSize(PR_TRUE); // If the avail width is not the same as last time we reflowed the cell or // the cell wants to be bigger than what was available last time or // it is a style change reflow or we are printing, then we must reflow the // cell. Otherwise we can skip the reflow. nsSize cellDesiredSize = cellFrame->GetDesiredSize(); if ((availCellWidth != cellFrame->GetPriorAvailWidth()) || (cellDesiredSize.width > cellFrame->GetPriorAvailWidth()) || (eReflowReason_StyleChange == aReflowState.reason) || isPaginated || (cellFrame->NeedPass2Reflow() && NS_UNCONSTRAINEDSIZE != aReflowState.availableWidth) || (aReflowState.mFlags.mSpecialHeightReflow && cellFrame->NeedSpecialReflow()) || (!aReflowState.mFlags.mSpecialHeightReflow && cellFrame->HadSpecialReflow()) || HasPctHeight() || notifyStyleChange) { // Reflow the cell to fit the available width, height nsSize kidAvailSize(availColWidth, aReflowState.availableHeight); nsReflowReason reason = eReflowReason_Resize; PRBool cellToWatch = PR_FALSE; // If it's a dirty frame, then check whether it's the initial reflow if (kidFrame->GetStateBits() & NS_FRAME_FIRST_REFLOW) { reason = eReflowReason_Initial; cellToWatch = PR_TRUE; } else if (eReflowReason_StyleChange == aReflowState.reason) { reason = eReflowReason_StyleChange; cellToWatch = PR_TRUE; } else if (notifyStyleChange) { reason = eReflowReason_StyleChange; cellToWatch = PR_TRUE; } if (cellToWatch) { cellFrame->DidSetStyleContext(); // XXX check this if (!tablePrevInFlow && isAutoLayout) { // request the maximum width if availWidth is constrained // XXX we could just do this always, but blocks have some problems if (NS_UNCONSTRAINEDSIZE != availCellWidth) { desiredSize.mFlags |= NS_REFLOW_CALC_MAX_WIDTH; } } else { cellToWatch = PR_FALSE; } } nscoord oldMaxWidth = cellFrame->GetMaximumWidth(); nscoord oldMaxElemWidth = cellFrame->GetPass1MaxElementWidth(); // Reflow the child nsTableCellReflowState kidReflowState(aPresContext, aReflowState, kidFrame, kidAvailSize, reason); InitChildReflowState(*aPresContext, kidAvailSize, borderCollapse, p2t, kidReflowState); nsReflowStatus status; rv = ReflowChild(kidFrame, aPresContext, desiredSize, kidReflowState, x, 0, 0, status); if (cellToWatch) { nscoord maxWidth = (NS_UNCONSTRAINEDSIZE == availCellWidth) ? desiredSize.width : desiredSize.mMaximumWidth; // save the max element width and max width if (desiredSize.mComputeMEW) { cellFrame->SetPass1MaxElementWidth(desiredSize.width, desiredSize.mMaxElementWidth); if (desiredSize.mMaxElementWidth > desiredSize.width) { desiredSize.width = desiredSize.mMaxElementWidth; } } cellFrame->SetMaximumWidth(maxWidth); } // allow the table to determine if/how the table needs to be rebalanced if (cellToWatch && needToNotifyTable) { needToNotifyTable = !aTableFrame.CellChangedWidth(*cellFrame, oldMaxWidth, oldMaxElemWidth); } // If any of the cells are not complete, then we're not complete if (NS_FRAME_IS_NOT_COMPLETE(status)) { aStatus = NS_FRAME_NOT_COMPLETE; } } else { desiredSize.width = cellDesiredSize.width; desiredSize.height = cellDesiredSize.height; nsRect *overflowArea = cellFrame->GetOverflowAreaProperty(); if (overflowArea) desiredSize.mOverflowArea = *overflowArea; else desiredSize.mOverflowArea.SetRect(0, 0, cellDesiredSize.width, cellDesiredSize.height); // if we are in a floated table, our position is not yet established, so we cannot reposition our views // the containing glock will do this for us after positioning the table if (!aTableFrame.GetStyleDisplay()->IsFloating()) { // Because we may have moved the frame we need to make sure any views are // positioned properly. We have to do this, because any one of our parent // frames could have moved and we have no way of knowing... nsTableFrame::RePositionViews(kidFrame); } } if (NS_UNCONSTRAINEDSIZE == aReflowState.availableHeight) { if (!GetPrevInFlow()) { // Calculate the cell's actual size given its pass2 size. This function // takes into account the specified height (in the style), and any special // logic needed for backwards compatibility CalculateCellActualSize(kidFrame, desiredSize.width, desiredSize.height, availCellWidth); } // height may have changed, adjust descent to absorb any excess difference nscoord ascent; if (!kidFrame->GetFirstChild(nsnull)->GetFirstChild(nsnull)) ascent = desiredSize.height; else ascent = ((nsTableCellFrame *)kidFrame)->GetDesiredAscent(); nscoord descent = desiredSize.height - ascent; UpdateHeight(desiredSize.height, ascent, descent, &aTableFrame, cellFrame); } else { paginatedHeight = PR_MAX(paginatedHeight, desiredSize.height); PRInt32 rowSpan = aTableFrame.GetEffectiveRowSpan((nsTableCellFrame&)*kidFrame); if (1 == rowSpan) { SetContentHeight(paginatedHeight); } } // Place the child if (NS_UNCONSTRAINEDSIZE != availColWidth) { desiredSize.width = PR_MAX(availCellWidth, availColWidth); } FinishReflowChild(kidFrame, aPresContext, nsnull, desiredSize, x, 0, 0); x += desiredSize.width; } else {// it's an unknown frame type, give it a generic reflow and ignore the results nsTableCellReflowState kidReflowState(aPresContext, aReflowState, kidFrame, nsSize(0,0), eReflowReason_Resize); InitChildReflowState(*aPresContext, nsSize(0,0), PR_FALSE, p2t, kidReflowState); nsHTMLReflowMetrics desiredSize(PR_FALSE); nsReflowStatus status; ReflowChild(kidFrame, aPresContext, desiredSize, kidReflowState, 0, 0, 0, status); kidFrame->DidReflow(aPresContext, nsnull, NS_FRAME_REFLOW_FINISHED); } } else if (IS_TABLE_CELL(frameType)) { // we need to account for the cell's width even if it isn't reflowed x += kidFrame->GetSize().width; } ConsiderChildOverflow(aDesiredSize.mOverflowArea, kidFrame); kidFrame = iter.Next(); // Get the next child x += cellSpacingX; } // just set our width to what was available. The table will calculate the width and not use our value. aDesiredSize.width = aReflowState.availableWidth; if (aReflowState.mFlags.mSpecialHeightReflow) { aDesiredSize.height = mRect.height; } else if (NS_UNCONSTRAINEDSIZE == aReflowState.availableHeight) { aDesiredSize.height = CalcHeight(aReflowState); if (GetPrevInFlow()) { nscoord height = CalcHeightFromUnpaginatedHeight(aPresContext, *this); aDesiredSize.height = PR_MAX(aDesiredSize.height, height); } else { if (isPaginated && HasStyleHeight()) { // set the unpaginated height so next in flows can try to honor it SetHasUnpaginatedHeight(PR_TRUE); SetUnpaginatedHeight(aPresContext, aDesiredSize.height); } if (isPaginated && HasUnpaginatedHeight()) { aDesiredSize.height = PR_MAX(aDesiredSize.height, GetUnpaginatedHeight(aPresContext)); } } } else { // constrained height, paginated aDesiredSize.height = paginatedHeight; if (aDesiredSize.height <= aReflowState.availableHeight) { nscoord height = CalcHeightFromUnpaginatedHeight(aPresContext, *this); aDesiredSize.height = PR_MAX(aDesiredSize.height, height); aDesiredSize.height = PR_MIN(aDesiredSize.height, aReflowState.availableHeight); } } nsRect rowRect(0, 0, aDesiredSize.width, aDesiredSize.height); aDesiredSize.mOverflowArea.UnionRect(aDesiredSize.mOverflowArea, rowRect); FinishAndStoreOverflow(&aDesiredSize); return rv; } NS_METHOD nsTableRowFrame::IncrementalReflow(nsPresContext* aPresContext, nsHTMLReflowMetrics& aDesiredSize, const nsHTMLReflowState& aReflowState, nsTableFrame& aTableFrame, nsReflowStatus& aStatus) { CalcHeight(aReflowState); // need to recalculate it based on last reflow sizes // the row is a target if its path has a reflow command nsHTMLReflowCommand* command = aReflowState.path->mReflowCommand; if (command) IR_TargetIsMe(aPresContext, aDesiredSize, aReflowState, aTableFrame, aStatus); // see if the chidren are targets as well nsReflowPath::iterator iter = aReflowState.path->FirstChild(); nsReflowPath::iterator end = aReflowState.path->EndChildren(); for (; iter != end; ++iter) IR_TargetIsChild(aPresContext, aDesiredSize, aReflowState, aTableFrame, aStatus, *iter); return NS_OK; } NS_METHOD nsTableRowFrame::IR_TargetIsMe(nsPresContext* aPresContext, nsHTMLReflowMetrics& aDesiredSize, const nsHTMLReflowState& aReflowState, nsTableFrame& aTableFrame, nsReflowStatus& aStatus) { nsresult rv = NS_FRAME_COMPLETE; nsReflowType type; aReflowState.path->mReflowCommand->GetType(type); switch (type) { case eReflowType_ReflowDirty: // Reflow the dirty child frames. Typically this is newly added frames. rv = ReflowChildren(aPresContext, aDesiredSize, aReflowState, aTableFrame, aStatus, PR_TRUE); break; case eReflowType_StyleChanged : rv = IR_StyleChanged(aPresContext, aDesiredSize, aReflowState, aTableFrame, aStatus); break; case eReflowType_ContentChanged : NS_ASSERTION(PR_FALSE, "illegal reflow type: ContentChanged"); rv = NS_ERROR_ILLEGAL_VALUE; break; default: NS_NOTYETIMPLEMENTED("unexpected reflow command type"); rv = NS_ERROR_NOT_IMPLEMENTED; break; } return rv; } NS_METHOD nsTableRowFrame::IR_StyleChanged(nsPresContext* aPresContext, nsHTMLReflowMetrics& aDesiredSize, const nsHTMLReflowState& aReflowState, nsTableFrame& aTableFrame, nsReflowStatus& aStatus) { nsresult rv = NS_OK; // we presume that all the easy optimizations were done in the nsHTMLStyleSheet before we were called here // XXX: we can optimize this when we know which style attribute changed aTableFrame.SetNeedStrategyInit(PR_TRUE); rv = ReflowChildren(aPresContext, aDesiredSize, aReflowState, aTableFrame, aStatus, PR_FALSE); return rv; } NS_METHOD nsTableRowFrame::IR_TargetIsChild(nsPresContext* aPresContext, nsHTMLReflowMetrics& aDesiredSize, const nsHTMLReflowState& aReflowState, nsTableFrame& aTableFrame, nsReflowStatus& aStatus, nsIFrame* aNextFrame) { if (!aNextFrame) return NS_ERROR_NULL_POINTER; nsresult rv = NS_OK; GET_PIXELS_TO_TWIPS(aPresContext, p2t); PRBool isAutoLayout = aTableFrame.IsAutoLayout(); const nsStyleDisplay* childDisplay = aNextFrame->GetStyleDisplay(); if (NS_STYLE_DISPLAY_TABLE_CELL == childDisplay->mDisplay) { nsTableCellFrame* cellFrame = (nsTableCellFrame*)aNextFrame; // Get the x coord of the cell nsPoint cellOrigin = cellFrame->GetPosition(); // At this point, we know the column widths. Compute the cell available width PRInt32 cellColIndex; cellFrame->GetColIndex(cellColIndex); nscoord cellSpacingX = aTableFrame.GetCellSpacingX(); nscoord colAvailWidth, cellAvailWidth; CalcAvailWidth(aTableFrame, GetComputedWidth(aReflowState, aTableFrame), p2t, *cellFrame, cellSpacingX, colAvailWidth, cellAvailWidth); // Always let the cell be as high as it wants. We ignore the height that's // passed in and always place the entire row. Let the row group decide // whether we fit or wehther the entire row is pushed nsSize cellAvailSize(cellAvailWidth, NS_UNCONSTRAINEDSIZE); // Pass along the reflow command // Unless this is a fixed-layout table, then have the cell incrementally // update its maximum width. nsHTMLReflowMetrics cellMet(PR_TRUE, isAutoLayout ? NS_REFLOW_CALC_MAX_WIDTH : 0); GET_PIXELS_TO_TWIPS(aPresContext, p2t); nsTableCellReflowState kidRS(aPresContext, aReflowState, aNextFrame, cellAvailSize, aReflowState.reason); // If the table will intialize the strategy (and balance) or balance, make the computed // width unconstrained. This avoids having the cell block compute a bogus max width // which will bias the balancing. Leave the avail width alone, since it is a best guess. // After the table balances, the cell will get reflowed with the correct computed width. PRBool resetComputedWidth = aTableFrame.NeedStrategyInit() || aTableFrame.NeedStrategyBalance(); if (resetComputedWidth) cellFrame->SetNeedPass2Reflow(PR_TRUE); InitChildReflowState(*aPresContext, cellAvailSize, aTableFrame.IsBorderCollapse(), p2t, kidRS, resetComputedWidth); // Remember the current desired size, we'll need it later nscoord oldCellMinWidth = cellFrame->GetPass1MaxElementWidth(); nscoord oldCellMaximumWidth = cellFrame->GetMaximumWidth(); nsSize oldCellDesSize = cellFrame->GetDesiredSize(); nscoord oldCellDesAscent = cellFrame->GetDesiredAscent(); nscoord oldCellDesDescent = oldCellDesSize.height - oldCellDesAscent; // Reflow the cell passing it the incremental reflow command. We can't pass // in a max width of NS_UNCONSTRAINEDSIZE, because the max width must match // the width of the previous reflow... rv = ReflowChild(aNextFrame, aPresContext, cellMet, kidRS, cellOrigin.x, 0, 0, aStatus); nsSize initCellDesSize(cellMet.width, cellMet.height); nscoord initCellDesAscent = cellMet.ascent; nscoord initCellDesDescent = cellMet.descent; // cache the max-elem and maximum widths cellFrame->SetPass1MaxElementWidth(cellMet.width, cellMet.mMaxElementWidth); cellFrame->SetMaximumWidth(cellMet.mMaximumWidth); // Calculate the cell's actual size given its pass2 size. This function // takes into account the specified height (in the style), and any special // logic needed for backwards compatibility CalculateCellActualSize(aNextFrame, cellMet.width, cellMet.height, cellAvailWidth); // height may have changed, adjust descent to absorb any excess difference if (!aNextFrame->GetFirstChild(nsnull)->GetFirstChild(nsnull)) cellMet.ascent = cellMet.height; cellMet.descent = cellMet.height - cellMet.ascent; // if the cell got shorter and it may have been the tallest, recalc the tallest cell PRBool tallestCellGotShorter = PR_FALSE; PRBool hasVerticalAlignBaseline = cellFrame->HasVerticalAlignBaseline(); if (!hasVerticalAlignBaseline) { // only the height matters tallestCellGotShorter = TallestCellGotShorter(oldCellDesSize.height, cellMet.height, GetHeight()); } else { // the ascent matters tallestCellGotShorter = TallestCellGotShorter(oldCellDesAscent, cellMet.ascent, mMaxCellAscent); // the descent of cells without rowspan also matters if (!tallestCellGotShorter) { PRInt32 rowSpan = aTableFrame.GetEffectiveRowSpan(*cellFrame); if (rowSpan == 1) { tallestCellGotShorter = TallestCellGotShorter(oldCellDesDescent, cellMet.descent, mMaxCellDescent); } } } if (tallestCellGotShorter) { CalcHeight(aReflowState); } else { UpdateHeight(cellMet.height, cellMet.ascent, cellMet.descent, &aTableFrame, cellFrame); } // if the cell's desired size didn't changed, our height is unchanged aDesiredSize.mNothingChanged = PR_FALSE; PRInt32 rowSpan = aTableFrame.GetEffectiveRowSpan(*cellFrame); if ((initCellDesSize.width == oldCellDesSize.width) && (initCellDesSize.height == oldCellDesSize.height) && (oldCellMaximumWidth == cellMet.mMaximumWidth)) { if (!hasVerticalAlignBaseline) { // only the cell's height matters aDesiredSize.mNothingChanged = PR_TRUE; } else { // cell's ascent and cell's descent matter if (initCellDesAscent == oldCellDesAscent) { if ((rowSpan == 1) && (initCellDesDescent == oldCellDesDescent)) { aDesiredSize.mNothingChanged = PR_TRUE; } } } } aDesiredSize.height = (aDesiredSize.mNothingChanged) ? mRect.height : GetHeight(); if (1 == rowSpan) { cellMet.height = aDesiredSize.height; } else { nscoord heightOfRows = aDesiredSize.height + GetHeightOfRowsSpannedBelowFirst(*cellFrame, aTableFrame); cellMet.height = PR_MAX(cellMet.height, heightOfRows); // XXX need to check what happens when this height differs from height of the cell's previous mRect.height } // Now place the child cellMet.width = colAvailWidth; FinishReflowChild(aNextFrame, aPresContext, nsnull, cellMet, cellOrigin.x, 0, 0); // Notify the table if the cell width changed so it can decide whether to rebalance if (!aDesiredSize.mNothingChanged) { aTableFrame.CellChangedWidth(*cellFrame, oldCellMinWidth, oldCellMaximumWidth); } // Return our desired size. Note that our desired width is just whatever width // we were given by the row group frame aDesiredSize.width = aReflowState.availableWidth; if (!aDesiredSize.mNothingChanged) { if (aDesiredSize.height == mRect.height) { // our height didn't change cellFrame->VerticallyAlignChild(aReflowState, mMaxCellAscent); nsRect dirtyRect = cellFrame->GetRect(); dirtyRect.height = mRect.height; ConsiderChildOverflow(aDesiredSize.mOverflowArea, cellFrame); dirtyRect.UnionRect(dirtyRect, aDesiredSize.mOverflowArea); Invalidate(dirtyRect); } } else { // we dont realign vertical but we need to update the overflow area nsIFrame* cellKidFrame = cellFrame->GetFirstChild(nsnull); if (cellKidFrame) { // XXX This is bogus. The code above changes the cell width // and height but leaves the overflow area alone. How can that // be right? // Make sure the overflow area includes the width and height, in any case. cellMet.mOverflowArea.UnionRect(cellMet.mOverflowArea, nsRect(0, 0, cellMet.width, cellMet.height)); cellFrame->ConsiderChildOverflow(cellMet.mOverflowArea, cellKidFrame); cellFrame->FinishAndStoreOverflow(&cellMet); if (cellFrame->HasView()) { nsContainerFrame::SyncFrameViewAfterReflow(aPresContext, cellFrame, cellFrame->GetView(), &cellMet.mOverflowArea, 0); } } } } else { // pass reflow to unknown frame child // aDesiredSize does not change } // recover the overflow area aDesiredSize.mOverflowArea = nsRect(0, 0, aDesiredSize.width, aDesiredSize.height); for (nsIFrame* cell = mFrames.FirstChild(); cell; cell = cell->GetNextSibling()) { ConsiderChildOverflow(aDesiredSize.mOverflowArea, cell); } FinishAndStoreOverflow(&aDesiredSize); // When returning whether we're complete we need to look at each of our cell // frames. If any of them has a continuing frame, then we're not complete. We // can't just return the status of the cell frame we just reflowed... aStatus = NS_FRAME_COMPLETE; if (GetNextInFlow()) { for (nsIFrame* cell = mFrames.FirstChild(); cell; cell = cell->GetNextSibling()) { nsIFrame* contFrame = cell->GetNextInFlow(); if (contFrame) { aStatus = NS_FRAME_NOT_COMPLETE; break; } } } return rv; } /** Layout the entire row. * This method stacks cells horizontally according to HTML 4.0 rules. */ NS_METHOD nsTableRowFrame::Reflow(nsPresContext* aPresContext, nsHTMLReflowMetrics& aDesiredSize, const nsHTMLReflowState& aReflowState, nsReflowStatus& aStatus) { DO_GLOBAL_REFLOW_COUNT("nsTableRowFrame", aReflowState.reason); DISPLAY_REFLOW(aPresContext, this, aReflowState, aDesiredSize, aStatus); #if defined DEBUG_TABLE_REFLOW_TIMING nsTableFrame::DebugReflow(this, (nsHTMLReflowState&)aReflowState); #endif nsresult rv = NS_OK; nsTableFrame* tableFrame = nsTableFrame::GetTableFrame(this); if (!tableFrame) return NS_ERROR_NULL_POINTER; const nsStyleVisibility* rowVis = GetStyleVisibility(); PRBool collapseRow = (NS_STYLE_VISIBILITY_COLLAPSE == rowVis->mVisible); if (collapseRow) { tableFrame->SetNeedToCollapse(PR_TRUE); } // see if a special height reflow needs to occur due to having a pct height if (!NeedSpecialReflow()) nsTableFrame::CheckRequestSpecialHeightReflow(aReflowState); switch (aReflowState.reason) { case eReflowReason_Initial: rv = ReflowChildren(aPresContext, aDesiredSize, aReflowState, *tableFrame, aStatus, PR_FALSE); break; case eReflowReason_Resize: case eReflowReason_StyleChange: case eReflowReason_Dirty: rv = ReflowChildren(aPresContext, aDesiredSize, aReflowState, *tableFrame, aStatus, PR_FALSE); break; case eReflowReason_Incremental: rv = IncrementalReflow(aPresContext, aDesiredSize, aReflowState, *tableFrame, aStatus); break; default: NS_ASSERTION(PR_FALSE , "we should handle this reflow reason"); rv = NS_ERROR_NOT_IMPLEMENTED; break; } // just set our width to what was available. The table will calculate the width and not use our value. aDesiredSize.width = aReflowState.availableWidth; if (aReflowState.mFlags.mSpecialHeightReflow) { SetNeedSpecialReflow(PR_FALSE); } #if defined DEBUG_TABLE_REFLOW_TIMING nsTableFrame::DebugReflow(this, (nsHTMLReflowState&)aReflowState, &aDesiredSize, aStatus); #endif NS_FRAME_SET_TRUNCATION(aStatus, aReflowState, aDesiredSize); return rv; } /** * This function is called by the row group frame's SplitRowGroup() code when * pushing a row frame that has cell frames that span into it. The cell frame * should be reflowed with the specified height */ nscoord nsTableRowFrame::ReflowCellFrame(nsPresContext* aPresContext, const nsHTMLReflowState& aReflowState, nsTableCellFrame* aCellFrame, nscoord aAvailableHeight, nsReflowStatus& aStatus) { nsTableFrame* tableFrame = nsTableFrame::GetTableFrame(this); if (!tableFrame) ABORT1(NS_ERROR_NULL_POINTER); // Reflow the cell frame with the specified height. Use the existing width nsSize cellSize = aCellFrame->GetSize(); nsSize availSize(cellSize.width, aAvailableHeight); PRBool borderCollapse = ((nsTableFrame*)tableFrame->GetFirstInFlow())->IsBorderCollapse(); GET_PIXELS_TO_TWIPS(aPresContext, p2t); nsTableCellReflowState cellReflowState(aPresContext, aReflowState, aCellFrame, availSize, eReflowReason_Resize); InitChildReflowState(*aPresContext, availSize, borderCollapse, p2t, cellReflowState); nsHTMLReflowMetrics desiredSize(PR_FALSE); ReflowChild(aCellFrame, aPresContext, desiredSize, cellReflowState, 0, 0, NS_FRAME_NO_MOVE_FRAME, aStatus); PRBool fullyComplete = NS_FRAME_IS_COMPLETE(aStatus) && !NS_FRAME_IS_TRUNCATED(aStatus); aCellFrame->SetSize( nsSize(cellSize.width, fullyComplete ? aAvailableHeight : desiredSize.height)); // XXX What happens if this cell has 'vertical-align: baseline' ? // XXX Why is it assumed that the cell's ascent hasn't changed ? if (fullyComplete) { aCellFrame->VerticallyAlignChild(aReflowState, mMaxCellAscent); } aCellFrame->DidReflow(aPresContext, nsnull, NS_FRAME_REFLOW_FINISHED); return desiredSize.height; } nscoord nsTableRowFrame::CollapseRowIfNecessary(nscoord aRowOffset, nscoord aWidth, PRBool aCollapseGroup, PRBool& aDidCollapse) { const nsStyleVisibility* rowVis = GetStyleVisibility(); PRBool collapseRow = (NS_STYLE_VISIBILITY_COLLAPSE == rowVis->mVisible); nsTableFrame* tableFrame = nsTableFrame::GetTableFrame(this); if (!tableFrame) return 0; if (collapseRow) { tableFrame->SetNeedToCollapse(PR_TRUE); } nsRect rowRect = GetRect(); rowRect.y -= aRowOffset; rowRect.width = aWidth; nsRect overflowArea(0, 0, 0, 0); nscoord shift = 0; nscoord cellSpacingX = tableFrame->GetCellSpacingX(); nscoord cellSpacingY = tableFrame->GetCellSpacingY(); if (aCollapseGroup || collapseRow) { nsTableCellFrame* cellFrame = GetFirstCell(); aDidCollapse = PR_TRUE; shift = rowRect.height + cellSpacingY; while (cellFrame) { nsRect cRect = cellFrame->GetRect(); cRect.height = 0; cellFrame->SetRect(cRect); cellFrame = cellFrame->GetNextCell(); } rowRect.height = 0; } else { // row is not collapsed nsTableIterator iter(*this, eTableDIR); // remember the col index of the previous cell to handle rowspans into this // row PRInt32 firstPrevColIndex = (iter.IsLeftToRight()) ? -1 : tableFrame->GetColCount(); PRInt32 prevColIndex = firstPrevColIndex; nscoord x = 0; // running total of children x offset PRInt32 colIncrement = iter.IsLeftToRight() ? 1 : -1; //nscoord x = cellSpacingX; nsIFrame* kidFrame = iter.First(); while (kidFrame) { nsIAtom* frameType = kidFrame->GetType(); if (IS_TABLE_CELL(frameType)) { nsTableCellFrame* cellFrame = (nsTableCellFrame*)kidFrame; PRInt32 cellColIndex; cellFrame->GetColIndex(cellColIndex); PRInt32 cellColSpan = tableFrame->GetEffectiveColSpan(*cellFrame); // If the adjacent cell is in a prior row (because of a rowspan) add in // the space if ((iter.IsLeftToRight() && (prevColIndex != (cellColIndex - 1))) || (!iter.IsLeftToRight() && (prevColIndex != cellColIndex + cellColSpan))) { x += GetSpaceBetween(prevColIndex, cellColIndex, cellColSpan, *tableFrame, cellSpacingX, iter.IsLeftToRight(), PR_TRUE); } nsRect cRect(x, 0, 0,rowRect.height); // remember the rightmost (ltr) or leftmost (rtl) column this cell // spans into prevColIndex = (iter.IsLeftToRight()) ? cellColIndex + (cellColSpan - 1) : cellColIndex; PRInt32 startIndex = (iter.IsLeftToRight()) ? cellColIndex : cellColIndex + (cellColSpan - 1); PRInt32 actualColSpan = cellColSpan; PRBool isVisible = PR_FALSE; for (PRInt32 colX = startIndex; actualColSpan > 0; colX += colIncrement, actualColSpan--) { nsTableColFrame* colFrame = tableFrame->GetColFrame(colX); const nsStyleVisibility* colVis = colFrame->GetStyleVisibility(); PRBool collapseCol = (NS_STYLE_VISIBILITY_COLLAPSE == colVis->mVisible); nsIFrame* cgFrame = colFrame->GetParent(); const nsStyleVisibility* groupVis = cgFrame->GetStyleVisibility(); PRBool collapseGroup = (NS_STYLE_VISIBILITY_COLLAPSE == groupVis->mVisible); PRBool isCollapsed = collapseCol || collapseGroup; if (isCollapsed) { tableFrame->SetNeedToCollapse(PR_TRUE); } else { cRect.width += tableFrame->GetColumnWidth(colX); isVisible = PR_TRUE; } if (!isCollapsed && (actualColSpan > 1)) { nsTableColFrame* nextColFrame = tableFrame->GetColFrame(colX + colIncrement); const nsStyleVisibility* nextColVis = nextColFrame->GetStyleVisibility(); if ( (NS_STYLE_VISIBILITY_COLLAPSE != nextColVis->mVisible) && (tableFrame->GetNumCellsOriginatingInCol(colX + colIncrement) > 0)) { cRect.width += cellSpacingX; } } } x += cRect.width; if (isVisible) x += cellSpacingX; PRInt32 actualRowSpan = tableFrame->GetEffectiveRowSpan(*cellFrame); nsTableRowFrame* rowFrame = GetNextRow(); for (actualRowSpan--; actualRowSpan > 0 && rowFrame; actualRowSpan--) { const nsStyleVisibility* nextRowVis = rowFrame->GetStyleVisibility(); PRBool collapseNextRow = (NS_STYLE_VISIBILITY_COLLAPSE == nextRowVis->mVisible); if (!collapseNextRow) { nsRect nextRect = rowFrame->GetRect(); cRect.height += nextRect.height + cellSpacingY; } rowFrame = rowFrame->GetNextRow(); } cellFrame->SetRect(cRect); nsRect cellOverflow = nsRect(0, 0, cRect.width, cRect.height); cellFrame->FinishAndStoreOverflow(&cellOverflow, nsSize(cRect.width, cRect.height)); nsTableFrame::RePositionViews(cellFrame); ConsiderChildOverflow(overflowArea, cellFrame); } kidFrame = iter.Next(); // Get the next child } } SetRect(rowRect); overflowArea.UnionRect(nsRect(0,0,rowRect.width, rowRect.height), overflowArea); FinishAndStoreOverflow(&overflowArea, nsSize(rowRect.width, rowRect.height)); nsTableFrame::RePositionViews(this); return shift; } /** * These 3 functions are called by the row group frame's SplitRowGroup() code when * it creates a continuing cell frame and wants to insert it into the row's child list */ void nsTableRowFrame::InsertCellFrame(nsTableCellFrame* aFrame, nsTableCellFrame* aPrevSibling) { mFrames.InsertFrame(nsnull, aPrevSibling, aFrame); aFrame->SetParent(this); } void nsTableRowFrame::InsertCellFrame(nsTableCellFrame* aFrame, PRInt32 aColIndex) { // Find the cell frame where col index < aColIndex nsTableCellFrame* priorCell = nsnull; for (nsIFrame* child = mFrames.FirstChild(); child; child = child->GetNextSibling()) { if (!IS_TABLE_CELL(child->GetType())) { nsTableCellFrame* cellFrame = (nsTableCellFrame*)child; PRInt32 colIndex; cellFrame->GetColIndex(colIndex); if (colIndex < aColIndex) { priorCell = cellFrame; } else break; } } InsertCellFrame(aFrame, priorCell); } void nsTableRowFrame::RemoveCellFrame(nsTableCellFrame* aFrame) { if (!mFrames.RemoveFrame(aFrame)) NS_ASSERTION(PR_FALSE, "frame not in list"); } nsIAtom* nsTableRowFrame::GetType() const { return nsLayoutAtoms::tableRowFrame; } nsTableRowFrame* nsTableRowFrame::GetNextRow() const { nsIFrame* childFrame = GetNextSibling(); while (childFrame) { if (nsLayoutAtoms::tableRowFrame == childFrame->GetType()) { NS_ASSERTION(NS_STYLE_DISPLAY_TABLE_ROW == childFrame->GetStyleDisplay()->mDisplay, "wrong display type on rowframe"); return (nsTableRowFrame*)childFrame; } childFrame = childFrame->GetNextSibling(); } return nsnull; } void nsTableRowFrame::SetUnpaginatedHeight(nsPresContext* aPresContext, nscoord aValue) { NS_ASSERTION(!GetPrevInFlow(), "program error"); // Get the property nscoord* value = (nscoord*)nsTableFrame::GetProperty(this, nsLayoutAtoms::rowUnpaginatedHeightProperty, PR_TRUE); if (value) { *value = aValue; } } nscoord nsTableRowFrame::GetUnpaginatedHeight(nsPresContext* aPresContext) { // See if the property is set nscoord* value = (nscoord*)nsTableFrame::GetProperty(GetFirstInFlow(), nsLayoutAtoms::rowUnpaginatedHeightProperty); if (value) return *value; else return 0; } void nsTableRowFrame::SetContinuousBCBorderWidth(PRUint8 aForSide, BCPixelSize aPixelValue) { switch (aForSide) { case NS_SIDE_RIGHT: mRightContBorderWidth = aPixelValue; return; case NS_SIDE_TOP: mTopContBorderWidth = aPixelValue; return; case NS_SIDE_LEFT: mLeftContBorderWidth = aPixelValue; return; default: NS_ERROR("invalid NS_SIDE arg"); } } /* ----- global methods ----- */ nsIFrame* NS_NewTableRowFrame(nsIPresShell* aPresShell, nsStyleContext* aContext) { return new (aPresShell) nsTableRowFrame(aContext); } #ifdef DEBUG NS_IMETHODIMP nsTableRowFrame::GetFrameName(nsAString& aResult) const { return MakeFrameName(NS_LITERAL_STRING("TableRow"), aResult); } #endif