void nsTableOuterFrame::UpdateReflowMetrics(PRUint8 aCaptionSide, nsHTMLReflowMetrics& aMet, const nsMargin& aInnerMargin, const nsMargin& aCaptionMargin) { SetDesiredSize(aCaptionSide, aInnerMargin, aCaptionMargin, aMet.width, aMet.height); aMet.SetOverflowAreasToDesiredBounds(); ConsiderChildOverflow(aMet.mOverflowAreas, InnerTableFrame()); if (mCaptionFrames.NotEmpty()) { ConsiderChildOverflow(aMet.mOverflowAreas, mCaptionFrames.FirstChild()); } FinishAndStoreOverflow(&aMet); }
NS_METHOD nsTableCellFrame::Reflow(nsPresContext* aPresContext, nsHTMLReflowMetrics& aDesiredSize, const nsHTMLReflowState& aReflowState, nsReflowStatus& aStatus) { DO_GLOBAL_REFLOW_COUNT("nsTableCellFrame", aReflowState.reason); DISPLAY_REFLOW(aPresContext, this, aReflowState, aDesiredSize, aStatus); #if defined DEBUG_TABLE_REFLOW_TIMING nsTableFrame::DebugReflow(this, (nsHTMLReflowState&)aReflowState); #endif float p2t = aPresContext->ScaledPixelsToTwips(); // work around pixel rounding errors, round down to ensure we don't exceed the avail height in nscoord availHeight = aReflowState.availableHeight; if (NS_UNCONSTRAINEDSIZE != availHeight) { availHeight = nsTableFrame::RoundToPixel(availHeight, p2t, eAlwaysRoundDown); } nsresult rv = NS_OK; // see if a special height reflow needs to occur due to having a pct height if (!NeedSpecialReflow()) nsTableFrame::CheckRequestSpecialHeightReflow(aReflowState); // this should probably be cached somewhere nsCompatibility compatMode = aPresContext->CompatibilityMode(); // Initialize out parameter if (aDesiredSize.mComputeMEW) { aDesiredSize.mMaxElementWidth = 0; } aStatus = NS_FRAME_COMPLETE; nsSize availSize(aReflowState.availableWidth, availHeight); PRBool noBorderBeforeReflow = GetContentEmpty() && GetStyleTableBorder()->mEmptyCells != NS_STYLE_TABLE_EMPTY_CELLS_SHOW; /* XXX: remove tableFrame when border-collapse inherits */ nsTableFrame* tableFrame = nsnull; rv = nsTableFrame::GetTableFrame(this, tableFrame); if (!tableFrame) ABORT1(NS_ERROR_NULL_POINTER); nsMargin borderPadding = aReflowState.mComputedPadding; nsMargin border; GetBorderWidth(p2t, border); if ((NS_UNCONSTRAINEDSIZE == availSize.width) || !noBorderBeforeReflow) { borderPadding += border; } nscoord topInset = borderPadding.top; nscoord rightInset = borderPadding.right; nscoord bottomInset = borderPadding.bottom; nscoord leftInset = borderPadding.left; // reduce available space by insets, if we're in a constrained situation if (NS_UNCONSTRAINEDSIZE!=availSize.width) availSize.width -= leftInset+rightInset; if (NS_UNCONSTRAINEDSIZE!=availSize.height) availSize.height -= topInset+bottomInset; PRBool isStyleChanged = PR_FALSE; if (eReflowReason_Incremental == aReflowState.reason) { // if the path has a reflow command then the cell must be the target of a style change nsHTMLReflowCommand* command = aReflowState.path->mReflowCommand; if (command) { // if there are other reflow commands targeted at the cell's block, these will // be subsumed by the style change reflow nsReflowType type; command->GetType(type); if (eReflowType_StyleChanged == type) { isStyleChanged = PR_TRUE; } else NS_ASSERTION(PR_FALSE, "table cell target of illegal incremental reflow type"); } // else the reflow command will be passed down to the child } // Try to reflow the child into the available space. It might not // fit or might need continuing. if (availSize.height < 0) availSize.height = 1; nsHTMLReflowMetrics kidSize(NS_UNCONSTRAINEDSIZE == aReflowState.availableWidth || aDesiredSize.mComputeMEW, aDesiredSize.mFlags); kidSize.width=kidSize.height=kidSize.ascent=kidSize.descent=0; SetPriorAvailWidth(aReflowState.availableWidth); nsIFrame* firstKid = mFrames.FirstChild(); NS_ASSERTION(firstKid, "Frame construction error, a table cell always has an inner cell frame"); nscoord computedPaginatedHeight = 0; if (aReflowState.mFlags.mSpecialHeightReflow || (HadSpecialReflow() && (eReflowReason_Incremental == aReflowState.reason))) { ((nsHTMLReflowState&)aReflowState).mComputedHeight = mRect.height - topInset - bottomInset; DISPLAY_REFLOW_CHANGE(); } else if (aPresContext->IsPaginated()) { computedPaginatedHeight = CalcUnpaginagedHeight(aPresContext, (nsTableCellFrame&)*this, *tableFrame, topInset + bottomInset); if (computedPaginatedHeight > 0) { ((nsHTMLReflowState&)aReflowState).mComputedHeight = computedPaginatedHeight; DISPLAY_REFLOW_CHANGE(); } } else { SetHasPctOverHeight(PR_FALSE); } // If it was a style change targeted at us, then reflow the child with a style change reason nsReflowReason reason = aReflowState.reason; if (isStyleChanged) { reason = eReflowReason_StyleChange; // the following could be optimized with a fair amount of effort tableFrame->SetNeedStrategyInit(PR_TRUE); } nsHTMLReflowState kidReflowState(aPresContext, aReflowState, firstKid, availSize, reason); // mIPercentHeightObserver is for non table related frames inside cells in quirks mode kidReflowState.mPercentHeightObserver = (eCompatibility_NavQuirks == compatMode) ? (nsIPercentHeightObserver *)this : nsnull; // Assume the inner child will stay positioned exactly where it is. Later in // VerticallyAlignChild() we'll move it if it turns out to be wrong. This // avoids excessive movement and is more stable nsPoint kidOrigin; if (isStyleChanged || (eReflowReason_Initial == aReflowState.reason) || (eReflowReason_StyleChange == aReflowState.reason)) { kidOrigin.MoveTo(leftInset, topInset); } else { // handle percent padding-left which was 0 during initial reflow if (eStyleUnit_Percent == aReflowState.mStylePadding->mPadding.GetLeftUnit()) { nsRect kidRect = firstKid->GetRect(); // only move in the x direction for the same reason as above kidOrigin.MoveTo(leftInset, kidRect.y); firstKid->SetPosition(nsPoint(leftInset, kidRect.y)); } kidOrigin = firstKid->GetPosition(); } #if defined DEBUG_TABLE_REFLOW_TIMING nsTableFrame::DebugReflow(firstKid, (nsHTMLReflowState&)kidReflowState); #endif nscoord priorBlockHeight = GetLastBlockHeight(); ReflowChild(firstKid, aPresContext, kidSize, kidReflowState, kidOrigin.x, kidOrigin.y, 0, aStatus); SetLastBlockHeight(kidSize.height); if (isStyleChanged) { Invalidate(GetOverflowRect(), PR_FALSE); } #if defined DEBUG_TABLE_REFLOW_TIMING nsTableFrame::DebugReflow(firstKid, (nsHTMLReflowState&)kidReflowState, &kidSize, aStatus); #endif #ifdef NS_DEBUG DebugCheckChildSize(firstKid, kidSize, availSize, (NS_UNCONSTRAINEDSIZE != aReflowState.availableWidth)); #endif // 0 dimensioned cells need to be treated specially in Standard/NavQuirks mode // see testcase "emptyCells.html" if ((0 == kidSize.width) || (0 == kidSize.height)) { // XXX why was this && SetContentEmpty(PR_TRUE); if (NS_UNCONSTRAINEDSIZE == kidReflowState.availableWidth && GetStyleTableBorder()->mEmptyCells != NS_STYLE_TABLE_EMPTY_CELLS_SHOW) { // need to reduce the insets by border if the cell is empty leftInset -= border.left; rightInset -= border.right; topInset -= border.top; bottomInset -= border.bottom; } } else { SetContentEmpty(PR_FALSE); if ((eReflowReason_Incremental == aReflowState.reason) && noBorderBeforeReflow) { // need to consider borders, since they were factored out above leftInset += border.left; rightInset += border.right; topInset += border.top; bottomInset += border.bottom; kidOrigin.MoveTo(leftInset, topInset); } } const nsStylePosition* pos = GetStylePosition(); // calculate the min cell width nscoord onePixel = NSIntPixelsToTwips(1, p2t); nscoord smallestMinWidth = 0; if (eCompatibility_NavQuirks == compatMode) { if ((pos->mWidth.GetUnit() != eStyleUnit_Coord) && (pos->mWidth.GetUnit() != eStyleUnit_Percent)) { if (PR_TRUE == GetContentEmpty()) { if (border.left > 0) smallestMinWidth += onePixel; if (border.right > 0) smallestMinWidth += onePixel; } } } PRInt32 colspan = tableFrame->GetEffectiveColSpan(*this); if (colspan > 1) { smallestMinWidth = PR_MAX(smallestMinWidth, colspan * onePixel); nscoord spacingX = tableFrame->GetCellSpacingX(); nscoord spacingExtra = spacingX * (colspan - 1); smallestMinWidth += spacingExtra; if (aReflowState.mComputedPadding.left > 0) { smallestMinWidth -= onePixel; } } if ((0 == kidSize.width) && (NS_UNCONSTRAINEDSIZE != kidReflowState.availableWidth)) { // empty content has to be forced to the assigned width for resize or incremental reflow kidSize.width = kidReflowState.availableWidth; } if (0 == kidSize.height) { if ((pos->mHeight.GetUnit() != eStyleUnit_Coord) && (pos->mHeight.GetUnit() != eStyleUnit_Percent)) { PRInt32 pixHeight = (eCompatibility_NavQuirks == compatMode) ? 1 : 0; kidSize.height = NSIntPixelsToTwips(pixHeight, p2t); } } // end 0 dimensioned cells kidSize.width = PR_MAX(kidSize.width, smallestMinWidth); if (!tableFrame->IsAutoLayout()) { // a cell in a fixed layout table is constrained to the avail width // if we need to shorten the cell the previous non overflowing block // will get some overflow area if (kidSize.width > availSize.width) { kidSize.width = availSize.width; firstKid->FinishAndStoreOverflow(&kidSize); } } //if (eReflowReason_Resize == aReflowState.reason) { // NS_ASSERTION(kidSize.width <= availSize.width, "child needed more space during resize reflow"); //} // Place the child FinishReflowChild(firstKid, aPresContext, &kidReflowState, kidSize, kidOrigin.x, kidOrigin.y, 0); // first, compute the height which can be set w/o being restricted by aMaxSize.height nscoord cellHeight = kidSize.height; if (NS_UNCONSTRAINEDSIZE != cellHeight) { cellHeight += topInset + bottomInset; // work around block rounding errors, round down to ensure we don't exceed the avail height in nsPixelRound roundMethod = (NS_UNCONSTRAINEDSIZE == availHeight) ? eAlwaysRoundUp : eAlwaysRoundDown; cellHeight = nsTableFrame::RoundToPixel(cellHeight, p2t, roundMethod); } // next determine the cell's width nscoord cellWidth = kidSize.width; // at this point, we've factored in the cell's style attributes // factor in border and padding if (NS_UNCONSTRAINEDSIZE != cellWidth) { cellWidth += leftInset + rightInset; } cellWidth = nsTableFrame::RoundToPixel(cellWidth, p2t); // work around block rounding errors // set the cell's desired size and max element size aDesiredSize.width = cellWidth; aDesiredSize.height = cellHeight; aDesiredSize.ascent = topInset; aDesiredSize.descent = bottomInset; aDesiredSize.ascent += kidSize.ascent; aDesiredSize.descent += kidSize.descent; // the overflow area will be computed when the child will be vertically aligned if (aDesiredSize.mComputeMEW) { aDesiredSize.mMaxElementWidth = PR_MAX(smallestMinWidth, kidSize.mMaxElementWidth); if (NS_UNCONSTRAINEDSIZE != aDesiredSize.mMaxElementWidth) { aDesiredSize.mMaxElementWidth = nsTableFrame::RoundToPixel( aDesiredSize.mMaxElementWidth + leftInset + rightInset, p2t); } } if (aDesiredSize.mFlags & NS_REFLOW_CALC_MAX_WIDTH) { aDesiredSize.mMaximumWidth = kidSize.mMaximumWidth; if (NS_UNCONSTRAINEDSIZE != aDesiredSize.mMaximumWidth) { aDesiredSize.mMaximumWidth += leftInset + rightInset; aDesiredSize.mMaximumWidth = nsTableFrame::RoundToPixel(aDesiredSize.mMaximumWidth, p2t); } // make sure the preferred width is at least as big as the max element width if (aDesiredSize.mComputeMEW) { aDesiredSize.mMaximumWidth = PR_MAX(aDesiredSize.mMaximumWidth, aDesiredSize.mMaxElementWidth); } } if (aReflowState.mFlags.mSpecialHeightReflow) { if (aDesiredSize.height > mRect.height) { // set a bit indicating that the pct height contents exceeded // the height that they could honor in the pass 2 reflow SetHasPctOverHeight(PR_TRUE); } if (NS_UNCONSTRAINEDSIZE == aReflowState.availableHeight) { aDesiredSize.height = mRect.height; } SetNeedSpecialReflow(PR_FALSE); SetHadSpecialReflow(PR_TRUE); } else if (HadSpecialReflow()) { if (eReflowReason_Incremental == aReflowState.reason) { // with an unconstrained height, if the block height value hasn't changed, // use the last height of the cell. if ((NS_UNCONSTRAINEDSIZE == aReflowState.availableHeight) && (GetLastBlockHeight() == priorBlockHeight)) { aDesiredSize.height = mRect.height; } } // XXX should probably call SetHadSpecialReflow(PR_FALSE) when things change so that // nothing inside the cell has a percent height, but it is not easy determining this } // remember the desired size for this reflow SetDesiredSize(aDesiredSize); #if defined DEBUG_TABLE_REFLOW_TIMING nsTableFrame::DebugReflow(this, (nsHTMLReflowState&)aReflowState, &aDesiredSize, aStatus); #endif if (NS_UNCONSTRAINEDSIZE == aReflowState.availableWidth) { SetNeedPass2Reflow(PR_TRUE); } else if ((eReflowReason_Initial == aReflowState.reason) || (eReflowReason_Resize == aReflowState.reason)) { SetNeedPass2Reflow(PR_FALSE); } NS_FRAME_SET_TRUNCATION(aStatus, aReflowState, aDesiredSize); return NS_OK; }