/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ /* ***** BEGIN LICENSE BLOCK ***** * Version: NPL 1.1/GPL 2.0/LGPL 2.1 * * The contents of this file are subject to the Netscape 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/NPL/ * * 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): * Pierre Phaneuf * * Alternatively, the contents of this file may be used under the terms of * either 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 NPL, 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 NPL, the GPL or the LGPL. * * ***** END LICENSE BLOCK ***** */ #include "nsTableFrame.h" #include "nsTableColFrame.h" #include "nsTableCellFrame.h" #include "nsTableFrame.h" #include "nsTableRowGroupFrame.h" #include "nsReflowPath.h" #include "nsStyleContext.h" #include "nsStyleConsts.h" #include "nsIPresContext.h" #include "nsIRenderingContext.h" #include "nsCSSRendering.h" #include "nsIContent.h" #include "nsIHTMLContent.h" #include "nsHTMLParts.h" #include "nsHTMLValue.h" #include "nsHTMLAtoms.h" #include "nsVoidArray.h" #include "nsIView.h" #include "nsLayoutAtoms.h" #include "nsIFrameManager.h" #include "nsIPresShell.h" #include "nsCOMPtr.h" #include "nsIHTMLTableCellElement.h" #include "nsIDOMHTMLTableCellElement.h" #ifdef ACCESSIBILITY #include "nsIAccessibilityService.h" #endif #include "nsIServiceManager.h" #include "nsIDOMNode.h" #include "nsINameSpaceManager.h" //TABLECELL SELECTION #include "nsIFrameSelection.h" #include "nsILookAndFeel.h" nsTableCellFrame::nsTableCellFrame() { mBits.mColIndex = 0; mPriorAvailWidth = 0; SetContentEmpty(PR_FALSE); SetNeedSpecialReflow(PR_FALSE); SetHadSpecialReflow(PR_FALSE); SetHasPctOverHeight(PR_FALSE); SetNeedPass2Reflow(PR_TRUE); #ifdef DEBUG_TABLE_REFLOW_TIMING mTimer = new nsReflowTimer(this); mBlockTimer = new nsReflowTimer(this); #endif } nsTableCellFrame::~nsTableCellFrame() { #ifdef DEBUG_TABLE_REFLOW_TIMING nsTableFrame::DebugReflowDone(this); #endif } nsTableCellFrame* nsTableCellFrame::GetNextCell() const { nsIFrame* childFrame = GetNextSibling(); while (childFrame) { nsCOMPtr frameType; childFrame->GetFrameType(getter_AddRefs(frameType)); if (IS_TABLE_CELL(frameType.get())) { return (nsTableCellFrame*)childFrame; } childFrame = childFrame->GetNextSibling(); } return nsnull; } NS_IMETHODIMP nsTableCellFrame::Init(nsIPresContext* aPresContext, nsIContent* aContent, nsIFrame* aParent, nsStyleContext* aContext, nsIFrame* aPrevInFlow) { nsresult rv; // Let the base class do its initialization rv = nsHTMLContainerFrame::Init(aPresContext, aContent, aParent, aContext, aPrevInFlow); if (aPrevInFlow) { // Set the column index nsTableCellFrame* cellFrame = (nsTableCellFrame*)aPrevInFlow; PRInt32 colIndex; cellFrame->GetColIndex(colIndex); InitCellFrame(colIndex); } return rv; } // nsIPercentHeightObserver methods void nsTableCellFrame::NotifyPercentHeight(const nsHTMLReflowState& aReflowState) { if (!NeedSpecialReflow()) { // Only initiate a special reflow if we will be able to construct a computed height // on the cell that will result in the frame getting a computed height. This can only // happen (but not sufficient) if there is no computed height already set between the // initiating frame and the cell. for (const nsHTMLReflowState* rs = aReflowState.parentReflowState; rs; rs = rs->parentReflowState) { if ((NS_UNCONSTRAINEDSIZE != rs->mComputedHeight) && (0 != rs->mComputedHeight)) { return; } // stop when we reach the cell frame if (rs->frame == this) { nsTableFrame::RequestSpecialHeightReflow(*rs); return; } } NS_ASSERTION(PR_FALSE, "program error in NotifyPercentHeight"); } } // The cell needs to observe its block and things inside its block but nothing below that PRBool nsTableCellFrame::NeedsToObserve(const nsHTMLReflowState& aReflowState) { PRBool result = PR_FALSE; const nsHTMLReflowState* parentRS = aReflowState.parentReflowState; if (parentRS && (parentRS->mPercentHeightObserver == this)) { // cell observes the parent result = PR_TRUE; parentRS = parentRS->parentReflowState; if (parentRS && (parentRS->mPercentHeightObserver == this)) { // cell observers the grand parent parentRS = parentRS->parentReflowState; if (parentRS && (parentRS->mPercentHeightObserver == this)) { // cell observes the great grand parent, so we have gone too deep result = PR_FALSE; } } } return result; } nsresult nsTableCellFrame::GetRowIndex(PRInt32 &aRowIndex) const { nsresult result; nsTableRowFrame* row = NS_STATIC_CAST(nsTableRowFrame*, GetParent()); if (row) { aRowIndex = row->GetRowIndex(); result = NS_OK; } else { aRowIndex = 0; result = NS_ERROR_NOT_INITIALIZED; } return result; } nsresult nsTableCellFrame::GetColIndex(PRInt32 &aColIndex) const { if (mPrevInFlow) { return ((nsTableCellFrame*)GetFirstInFlow())->GetColIndex(aColIndex); } else { aColIndex = mBits.mColIndex; return NS_OK; } } NS_IMETHODIMP nsTableCellFrame::AttributeChanged(nsIPresContext* aPresContext, nsIContent* aChild, PRInt32 aNameSpaceID, nsIAtom* aAttribute, PRInt32 aModType) { // let the table frame decide what to do nsTableFrame* tableFrame = nsnull; nsresult rv = nsTableFrame::GetTableFrame(this, tableFrame); if ((NS_SUCCEEDED(rv)) && (tableFrame)) { tableFrame->AttributeChangedFor(aPresContext, this, aChild, aAttribute); } return NS_OK; } void nsTableCellFrame::SetPass1MaxElementWidth(nscoord aMaxWidth, nscoord aMaxElementWidth) { nscoord maxElemWidth = aMaxElementWidth; // check for fixed width and not nowrap and not pre const nsStylePosition* stylePosition = GetStylePosition(); const nsStyleText* styleText = GetStyleText(); if (stylePosition->mWidth.GetUnit() == eStyleUnit_Coord && styleText->mWhiteSpace != NS_STYLE_WHITESPACE_NOWRAP && styleText->mWhiteSpace != NS_STYLE_WHITESPACE_PRE) { // has fixed width, check the content for nowrap nsAutoString nowrap; nsresult result = GetContent()->GetAttr(kNameSpaceID_None, nsHTMLAtoms::nowrap, nowrap); if(NS_CONTENT_ATTR_NOT_THERE != result) { // content has nowrap (is not mapped to style be cause it has width) // set the max element size to the value of the fixed width (NAV/IE quirk) maxElemWidth = NS_MAX(maxElemWidth, stylePosition->mWidth.GetCoordValue()); } } mPass1MaxElementWidth = maxElemWidth; } NS_IMETHODIMP nsTableCellFrame::AppendFrames(nsIPresContext* aPresContext, nsIPresShell& aPresShell, nsIAtom* aListName, nsIFrame* aFrameList) { NS_PRECONDITION(PR_FALSE, "unsupported operation"); return NS_ERROR_NOT_IMPLEMENTED; } NS_IMETHODIMP nsTableCellFrame::InsertFrames(nsIPresContext* aPresContext, nsIPresShell& aPresShell, nsIAtom* aListName, nsIFrame* aPrevFrame, nsIFrame* aFrameList) { NS_PRECONDITION(PR_FALSE, "unsupported operation"); return NS_ERROR_NOT_IMPLEMENTED; } NS_IMETHODIMP nsTableCellFrame::RemoveFrame(nsIPresContext* aPresContext, nsIPresShell& aPresShell, nsIAtom* aListName, nsIFrame* aOldFrame) { NS_PRECONDITION(PR_FALSE, "unsupported operation"); return NS_ERROR_NOT_IMPLEMENTED; } void nsTableCellFrame::InitCellFrame(PRInt32 aColIndex) { nsTableFrame* tableFrame=nsnull; // I should be checking my own style context, but border-collapse isn't inheriting correctly nsresult rv = nsTableFrame::GetTableFrame(this, tableFrame); if ((NS_SUCCEEDED(rv)) && tableFrame) { SetColIndex(aColIndex); } } nsresult nsTableCellFrame::SetColIndex(PRInt32 aColIndex) { mBits.mColIndex = aColIndex; // for style context optimization, set the content's column index if possible. // this can only be done if we really have an nsTableCell. // other tags mapped to table cell display won't benefit from this optimization // see nsHTMLStyleSheet::RulesMatching //nsIContent* cell = kidFrame->GetContent(); nsIContent* cell = GetContent(); if (!cell) return NS_OK; nsIHTMLTableCellElement* cellContent = nsnull; nsresult rv = CallQueryInterface(cell, &cellContent); // cellContent: REFCNT++ if (cellContent && NS_SUCCEEDED(rv)) { // it's a table cell cellContent->SetColIndex(aColIndex); NS_RELEASE(cellContent); } return rv; } //ASSURE DIFFERENT COLORS for selection inline nscolor EnsureDifferentColors(nscolor colorA, nscolor colorB) { if (colorA == colorB) { nscolor res; res = NS_RGB(NS_GET_R(colorA) ^ 0xff, NS_GET_G(colorA) ^ 0xff, NS_GET_B(colorA) ^ 0xff); return res; } return colorA; } nsresult nsTableCellFrame::DecorateForSelection(nsIPresContext* aPresContext, nsIRenderingContext& aRenderingContext, const nsStyleBackground *aStyleColor) { PRInt16 displaySelection; displaySelection = DisplaySelection(aPresContext); if (displaySelection) { PRBool isSelected = (GetStateBits() & NS_FRAME_SELECTED_CONTENT) == NS_FRAME_SELECTED_CONTENT; if (isSelected) { nsCOMPtr shell; nsresult result = aPresContext->GetShell(getter_AddRefs(shell)); if (NS_FAILED(result)) return result; nsCOMPtr frameSelection; result = shell->GetFrameSelection(getter_AddRefs(frameSelection)); if (NS_SUCCEEDED(result)) { PRBool tableCellSelectionMode; result = frameSelection->GetTableCellSelection(&tableCellSelectionMode); if (NS_SUCCEEDED(result) && tableCellSelectionMode) { nscolor bordercolor; if(displaySelection == nsISelectionController::SELECTION_DISABLED) { bordercolor = NS_RGB(176,176,176);// disabled color } else { nsILookAndFeel* look = nsnull; if (NS_SUCCEEDED(aPresContext->GetLookAndFeel(&look)) && look) { look->GetColor(nsILookAndFeel::eColor_TextSelectBackground, bordercolor); NS_RELEASE(look); } } float t2pfloat; if (NS_SUCCEEDED(aPresContext->GetPixelsToTwips(&t2pfloat))) { PRInt16 t2p = (PRInt16)t2pfloat; if ((mRect.width >(3*t2p)) && (mRect.height > (3*t2p))) { //compare bordercolor to ((nsStyleColor *)myColor)->mBackgroundColor) bordercolor = EnsureDifferentColors(bordercolor, aStyleColor->mBackgroundColor); //outerrounded aRenderingContext.SetColor(bordercolor); aRenderingContext.DrawLine(t2p, 0, mRect.width, 0); aRenderingContext.DrawLine(0, t2p, 0, mRect.height); aRenderingContext.DrawLine(t2p, mRect.height, mRect.width, mRect.height); aRenderingContext.DrawLine(mRect.width, t2p, mRect.width, mRect.height); //middle aRenderingContext.DrawRect(t2p, t2p, mRect.width-t2p, mRect.height-t2p); //shading aRenderingContext.DrawLine(2*t2p, mRect.height-2*t2p, mRect.width-t2p, mRect.height- (2*t2p)); aRenderingContext.DrawLine(mRect.width - (2*t2p), 2*t2p, mRect.width - (2*t2p), mRect.height-t2p); } } } } } } return NS_OK; } void nsTableCellFrame::PaintUnderlay(nsIPresContext& aPresContext, nsIRenderingContext& aRenderingContext, const nsRect& aDirtyRect, PRUint32& aFlags, const nsStyleTableBorder& aCellTableStyle, const nsStyleBorder& aStyleBorder, const nsStylePadding& aStylePadding, PRBool aVisibleBackground, PRBool& aPaintChildren) { if (aVisibleBackground) { nsRect rect(0, 0, mRect.width, mRect.height); nsCSSRendering::PaintBackground(&aPresContext, aRenderingContext, this, aDirtyRect, rect, aStyleBorder, aStylePadding, PR_TRUE); // draw the border only when there is content or showing empty cells if (!GetContentEmpty() || NS_STYLE_TABLE_EMPTY_CELLS_SHOW == aCellTableStyle.mEmptyCells) { PRIntn skipSides = GetSkipSides(); nsCSSRendering::PaintBorder(&aPresContext, aRenderingContext, this, aDirtyRect, rect, aStyleBorder, mStyleContext, skipSides); } } // tell Paint to paint the children aPaintChildren = PR_TRUE; } NS_METHOD nsTableCellFrame::Paint(nsIPresContext* aPresContext, nsIRenderingContext& aRenderingContext, const nsRect& aDirtyRect, nsFramePaintLayer aWhichLayer, PRUint32 aFlags) { NS_ENSURE_TRUE(aPresContext, NS_ERROR_NULL_POINTER); PRBool isVisible; if (NS_SUCCEEDED(IsVisibleForPainting(aPresContext, aRenderingContext, PR_FALSE, &isVisible)) && !isVisible) { return NS_OK; } PRBool paintChildren = PR_TRUE; if (NS_FRAME_PAINT_LAYER_BACKGROUND == aWhichLayer) { PRBool paintBackground = PR_FALSE; const nsStyleBorder* myBorder = nsnull; const nsStylePadding* myPadding = nsnull; const nsStyleTableBorder* cellTableStyle = nsnull; const nsStyleVisibility* vis = GetStyleVisibility(); if (vis->IsVisible()) { myBorder = GetStyleBorder(); myPadding = GetStylePadding(); cellTableStyle = GetStyleTableBorder(); // paint the background when the cell is not empty or when showing empty cells or background paintBackground = (!GetContentEmpty() || NS_STYLE_TABLE_EMPTY_CELLS_SHOW == cellTableStyle->mEmptyCells || NS_STYLE_TABLE_EMPTY_CELLS_SHOW_BACKGROUND == cellTableStyle->mEmptyCells); } PaintUnderlay(*aPresContext, aRenderingContext, aDirtyRect, aFlags, *cellTableStyle, *myBorder, *myPadding, paintBackground, paintChildren); if (vis->IsVisible()) { const nsStyleBackground* myColor = GetStyleBackground(); DecorateForSelection(aPresContext, aRenderingContext,myColor); //ignore return value } } #ifdef DEBUG // for debug... if ((NS_FRAME_PAINT_LAYER_DEBUG == aWhichLayer) && GetShowFrameBorders()) { aRenderingContext.SetColor(NS_RGB(0, 0, 128)); aRenderingContext.DrawRect(0, 0, mRect.width, mRect.height); } #endif // paint the children unless we've been told not to if (paintChildren) { const nsStyleDisplay* disp = GetStyleDisplay(); // if the cell originates in a row and/or col that is collapsed, the // bottom and/or right portion of the cell is painted by translating // the rendering context. PRBool clipState; nsPoint offset; GetCollapseOffset(aPresContext, offset); if ((0 != offset.x) || (0 != offset.y)) { aRenderingContext.PushState(); aRenderingContext.Translate(offset.x, offset.y); aRenderingContext.SetClipRect(nsRect(-offset.x, -offset.y, mRect.width, mRect.height), nsClipCombine_kIntersect, clipState); } else { if ((NS_STYLE_OVERFLOW_HIDDEN == disp->mOverflow) || HasPctOverHeight()) { aRenderingContext.PushState(); SetOverflowClipRect(aRenderingContext); } } PaintChildren(aPresContext, aRenderingContext, aDirtyRect, aWhichLayer, aFlags); if ((0 != offset.x) || (0 != offset.y)) { aRenderingContext.PopState(clipState); } else { if ((NS_STYLE_OVERFLOW_HIDDEN == disp->mOverflow) || HasPctOverHeight()) { aRenderingContext.PopState(clipState); } } } DO_GLOBAL_REFLOW_COUNT_DSP_J("nsTableCellFrame", &aRenderingContext, 0); return NS_OK; /*nsFrame::Paint(aPresContext, aRenderingContext, aDirtyRect, aWhichLayer);*/ } NS_IMETHODIMP nsTableCellFrame::GetFrameForPoint(nsIPresContext* aPresContext, const nsPoint& aPoint, nsFramePaintLayer aWhichLayer, nsIFrame** aFrame) { // this should act like a block, so we need to override return GetFrameForPointUsing(aPresContext, aPoint, nsnull, aWhichLayer, (aWhichLayer == NS_FRAME_PAINT_LAYER_BACKGROUND), aFrame); } //null range means the whole thing NS_IMETHODIMP nsTableCellFrame::SetSelected(nsIPresContext* aPresContext, nsIDOMRange* aRange, PRBool aSelected, nsSpread aSpread) { //traverse through children unselect tables #if 0 if ((aSpread == eSpreadDown)){ nsIFrame* kid; FirstChild(nsnull, &kid); while (nsnull != kid) { kid->SetSelected(nsnull, aSelected, eSpreadDown); kid = kid->GetNextSibling(); } } //return nsFrame::SetSelected(aRange,aSelected,eSpreadNone); #endif // Must call base class to set mSelected state and trigger repaint of frame // Note that in current version, aRange and aSpread are ignored, // only this frame is considered nsFrame::SetSelected(aPresContext, aRange, aSelected, aSpread); nsCOMPtr shell; nsresult result = aPresContext->GetShell(getter_AddRefs(shell)); if (NS_FAILED(result)) return result; nsCOMPtr frameSelection; result = shell->GetFrameSelection(getter_AddRefs(frameSelection)); if (NS_SUCCEEDED(result) && frameSelection) { PRBool tableCellSelectionMode; result = frameSelection->GetTableCellSelection(&tableCellSelectionMode); if (NS_SUCCEEDED(result) && tableCellSelectionMode) { nsRect frameRect = GetRect(); nsRect rect(0, 0, frameRect.width, frameRect.height); Invalidate(aPresContext, rect, PR_FALSE); } } return NS_OK; } PRIntn nsTableCellFrame::GetSkipSides() const { PRIntn skip = 0; if (nsnull != mPrevInFlow) { skip |= 1 << NS_SIDE_TOP; } if (nsnull != mNextInFlow) { skip |= 1 << NS_SIDE_BOTTOM; } return skip; } PRBool nsTableCellFrame::ParentDisablesSelection() const //override default behavior { PRBool returnval; if (NS_FAILED(GetSelected(&returnval))) return PR_FALSE; if (returnval) return PR_TRUE; return nsFrame::ParentDisablesSelection(); } // Align the cell's child frame within the cell void nsTableCellFrame::VerticallyAlignChild(nsIPresContext* aPresContext, const nsHTMLReflowState& aReflowState, nscoord aMaxAscent) { const nsStyleTextReset* textStyle = GetStyleTextReset(); /* XXX: remove tableFrame when border-collapse inherits */ GET_PIXELS_TO_TWIPS(aPresContext, p2t); nsMargin borderPadding = nsTableFrame::GetBorderPadding(aReflowState, p2t, this); nscoord topInset = borderPadding.top; nscoord bottomInset = borderPadding.bottom; // As per bug 10207, we map 'sub', 'super', 'text-top', 'text-bottom', // length and percentage values to 'baseline' // XXX It seems that we don't get to see length and percentage values here // because the Style System has already fixed the error and mapped them // to whatever is inherited from the parent, i.e, 'middle' in most cases. PRUint8 verticalAlignFlags = NS_STYLE_VERTICAL_ALIGN_BASELINE; if (textStyle->mVerticalAlign.GetUnit() == eStyleUnit_Enumerated) { verticalAlignFlags = textStyle->mVerticalAlign.GetIntValue(); if (verticalAlignFlags != NS_STYLE_VERTICAL_ALIGN_TOP && verticalAlignFlags != NS_STYLE_VERTICAL_ALIGN_MIDDLE && verticalAlignFlags != NS_STYLE_VERTICAL_ALIGN_BOTTOM) { verticalAlignFlags = NS_STYLE_VERTICAL_ALIGN_BASELINE; } } nscoord height = mRect.height; nsIFrame* firstKid = mFrames.FirstChild(); nsRect kidRect = firstKid->GetRect(); nscoord childHeight = kidRect.height; // Vertically align the child nscoord kidYTop = 0; switch (verticalAlignFlags) { case NS_STYLE_VERTICAL_ALIGN_BASELINE: // Align the baselines of the child frame with the baselines of // other children in the same row which have 'vertical-align: baseline' kidYTop = topInset + aMaxAscent - GetDesiredAscent(); break; case NS_STYLE_VERTICAL_ALIGN_TOP: // Align the top of the child frame with the top of the content area, kidYTop = topInset; break; case NS_STYLE_VERTICAL_ALIGN_BOTTOM: // Align the bottom of the child frame with the bottom of the content area, kidYTop = height - childHeight - bottomInset; break; default: case NS_STYLE_VERTICAL_ALIGN_MIDDLE: // Align the middle of the child frame with the middle of the content area, kidYTop = (height - childHeight - bottomInset + topInset) / 2; float p2t; aPresContext->GetScaledPixelsToTwips(&p2t); kidYTop = nsTableFrame::RoundToPixel(kidYTop, p2t, eAlwaysRoundDown); } firstKid->SetPosition(nsPoint(kidRect.x, kidYTop)); if (kidYTop != kidRect.y) { // Make sure any child views are correctly positioned. We know the inner table // cell won't have a view nsContainerFrame::PositionChildViews(aPresContext, firstKid); } } // As per bug 10207, we map 'sub', 'super', 'text-top', 'text-bottom', // length and percentage values to 'baseline' // XXX It seems that we don't get to see length and percentage values here // because the Style System has already fixed the error and mapped them // to whatever is inherited from the parent, i.e, 'middle' in most cases. PRBool nsTableCellFrame::HasVerticalAlignBaseline() { const nsStyleTextReset* textStyle = GetStyleTextReset(); if (textStyle->mVerticalAlign.GetUnit() == eStyleUnit_Enumerated) { PRUint8 verticalAlignFlags = textStyle->mVerticalAlign.GetIntValue(); if (verticalAlignFlags == NS_STYLE_VERTICAL_ALIGN_TOP || verticalAlignFlags == NS_STYLE_VERTICAL_ALIGN_MIDDLE || verticalAlignFlags == NS_STYLE_VERTICAL_ALIGN_BOTTOM) { return PR_FALSE; } } return PR_TRUE; } PRInt32 nsTableCellFrame::GetRowSpan() { PRInt32 rowSpan=1; nsCOMPtr hc(do_QueryInterface(mContent)); if (hc) { nsHTMLValue val; hc->GetHTMLAttribute(nsHTMLAtoms::rowspan, val); if (eHTMLUnit_Integer == val.GetUnit()) { rowSpan=val.GetIntValue(); } } return rowSpan; } PRInt32 nsTableCellFrame::GetColSpan() { PRInt32 colSpan=1; nsCOMPtr hc(do_QueryInterface(mContent)); if (hc) { nsHTMLValue val; hc->GetHTMLAttribute(nsHTMLAtoms::colspan, val); if (eHTMLUnit_Integer == val.GetUnit()) { colSpan=val.GetIntValue(); } } return colSpan; } #ifdef DEBUG #define PROBABLY_TOO_LARGE 1000000 static void DebugCheckChildSize(nsIFrame* aChild, nsHTMLReflowMetrics& aMet, nsSize& aAvailSize, PRBool aIsPass2Reflow) { if (aIsPass2Reflow) { if ((aMet.width < 0) || (aMet.width > PROBABLY_TOO_LARGE)) { printf("WARNING: cell content %p has large width %d \n", aChild, aMet.width); } } if (aMet.mComputeMEW) { nscoord tmp = aMet.mMaxElementWidth; if ((tmp < 0) || (tmp > PROBABLY_TOO_LARGE)) { printf("WARNING: cell content %p has large max element width %d \n", aChild, tmp); } } } #endif // the computed height for the cell, which descendents use for percent height calculations // it is the height (minus border, padding) of the cell's first in flow during its final // reflow without an unconstrained height. static nscoord CalcUnpaginagedHeight(nsIPresContext* aPresContext, nsTableCellFrame& aCellFrame, nsTableFrame& aTableFrame, nscoord aVerticalBorderPadding) { const nsTableCellFrame* firstCellInFlow = (nsTableCellFrame*)aCellFrame.GetFirstInFlow(); nsTableFrame* firstTableInFlow = (nsTableFrame*)aTableFrame.GetFirstInFlow(); nsTableRowFrame* row = NS_STATIC_CAST(nsTableRowFrame*, firstCellInFlow->GetParent()); nsTableRowGroupFrame* firstRGInFlow = NS_STATIC_CAST(nsTableRowGroupFrame*, row->GetParent()); PRInt32 rowIndex; firstCellInFlow->GetRowIndex(rowIndex); PRInt32 rowSpan = aTableFrame.GetEffectiveRowSpan(*firstCellInFlow); nscoord cellSpacing = firstTableInFlow->GetCellSpacingX(); nscoord computedHeight = ((rowSpan - 1) * cellSpacing) - aVerticalBorderPadding; PRInt32 rowX; for (row = firstRGInFlow->GetFirstRow(), rowX = 0; row; row = row->GetNextRow(), rowX++) { if (rowX > rowIndex + rowSpan - 1) { break; } else if (rowX >= rowIndex) { computedHeight += row->GetUnpaginatedHeight(aPresContext); } } return computedHeight; } NS_METHOD nsTableCellFrame::Reflow(nsIPresContext* 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->GetScaledPixelsToTwips(&p2t); // 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->GetCompatibilityMode(&compatMode); // Initialize out parameter if (aDesiredSize.mComputeMEW) { aDesiredSize.mMaxElementWidth = 0; } aStatus = NS_FRAME_COMPLETE; nsSize availSize(aReflowState.availableWidth, availHeight); PRBool contentEmptyBeforeReflow = GetContentEmpty(); /* 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) || !contentEmptyBeforeReflow) { 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(); PRBool isPaginated; aPresContext->IsPaginated(&isPaginated); nscoord computedPaginatedHeight = 0; if (aReflowState.mFlags.mSpecialHeightReflow || (HadSpecialReflow() && (eReflowReason_Incremental == aReflowState.reason))) { ((nsHTMLReflowState&)aReflowState).mComputedHeight = mRect.height - topInset - bottomInset; DISPLAY_REFLOW_CHANGE(); } else if (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 kidReflowState.mPercentHeightObserver = (nsIPercentHeightObserver *)this; // 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(aPresContext, mRect); } #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) { // 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) && contentEmptyBeforeReflow) { // 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 kidSize.width = PR_MIN(kidSize.width, availSize.width); } //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; 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; } PRBool nsTableCellFrame::ConvertToPixelValue(nsHTMLValue& aValue, PRInt32 aDefault, PRInt32& aResult) { if (aValue.GetUnit() == eHTMLUnit_Pixel) aResult = aValue.GetPixelValue(); else if (aValue.GetUnit() == eHTMLUnit_Empty) aResult = aDefault; else { NS_ERROR("Unit must be pixel or empty"); return PR_FALSE; } return PR_TRUE; } /* ----- global methods ----- */ NS_IMPL_ADDREF_INHERITED(nsTableCellFrame, nsHTMLContainerFrame) NS_IMPL_RELEASE_INHERITED(nsTableCellFrame, nsHTMLContainerFrame) nsresult nsTableCellFrame::QueryInterface(const nsIID& aIID, void** aInstancePtr) { if (NULL == aInstancePtr) { return NS_ERROR_NULL_POINTER; } if (aIID.Equals(NS_GET_IID(nsITableCellLayout))) { *aInstancePtr = (void*) (nsITableCellLayout *)this; return NS_OK; } if (aIID.Equals(NS_GET_IID(nsIPercentHeightObserver))) { *aInstancePtr = (void*) (nsIPercentHeightObserver *)this; return NS_OK; } return nsHTMLContainerFrame::QueryInterface(aIID, aInstancePtr); } #ifdef ACCESSIBILITY NS_IMETHODIMP nsTableCellFrame::GetAccessible(nsIAccessible** aAccessible) { nsCOMPtr accService = do_GetService("@mozilla.org/accessibilityService;1"); if (accService) { return accService->CreateHTMLTableCellAccessible(NS_STATIC_CAST(nsIFrame*, this), aAccessible); } return NS_ERROR_FAILURE; } #endif /* This is primarily for editor access via nsITableLayout */ NS_IMETHODIMP nsTableCellFrame::GetCellIndexes(PRInt32 &aRowIndex, PRInt32 &aColIndex) { nsresult res = GetRowIndex(aRowIndex); if (NS_FAILED(res)) { aColIndex = 0; return res; } aColIndex = mBits.mColIndex; return NS_OK; } NS_IMETHODIMP nsTableCellFrame::GetPreviousCellInColumn(nsITableCellLayout **aCellLayout) { if (!aCellLayout) return NS_ERROR_NULL_POINTER; *aCellLayout = nsnull; nsTableFrame* tableFrame = nsnull; nsresult rv = nsTableFrame::GetTableFrame(this, tableFrame); if (NS_FAILED(rv)) return rv; if (!tableFrame) return NS_ERROR_FAILURE; // Get current cell location PRInt32 rowIndex, colIndex; GetCellIndexes(rowIndex, colIndex); if (colIndex > 0) { // Get the cellframe at previous colIndex nsTableCellFrame *cellFrame = tableFrame->GetCellFrameAt(rowIndex, colIndex-1); if (!cellFrame) return NS_ERROR_FAILURE; return CallQueryInterface(cellFrame, aCellLayout); } return NS_ERROR_FAILURE; } NS_IMETHODIMP nsTableCellFrame::GetNextCellInColumn(nsITableCellLayout **aCellLayout) { if (!aCellLayout) return NS_ERROR_NULL_POINTER; *aCellLayout = nsnull; nsTableFrame* tableFrame = nsnull; nsresult rv = nsTableFrame::GetTableFrame(this, tableFrame); if (NS_FAILED(rv)) return rv; if (!tableFrame) return NS_ERROR_FAILURE; // Get current cell location PRInt32 rowIndex, colIndex; GetCellIndexes(rowIndex, colIndex); // Get the cellframe at next colIndex nsTableCellFrame *cellFrame = tableFrame->GetCellFrameAt(rowIndex, colIndex+1); if (!cellFrame) return NS_ERROR_FAILURE; return CallQueryInterface(cellFrame, aCellLayout); } nsresult NS_NewTableCellFrame(nsIPresShell* aPresShell, PRBool aIsBorderCollapse, nsIFrame** aNewFrame) { NS_PRECONDITION(aNewFrame, "null OUT ptr"); if (nsnull == aNewFrame) { return NS_ERROR_NULL_POINTER; } nsTableCellFrame* it = (aIsBorderCollapse) ? new (aPresShell) nsBCTableCellFrame : new (aPresShell) nsTableCellFrame; if (nsnull == it) { return NS_ERROR_OUT_OF_MEMORY; } *aNewFrame = it; return NS_OK; } nsMargin* nsTableCellFrame::GetBorderWidth(float aPixelsToTwips, nsMargin& aBorder) const { aBorder.left = aBorder.right = aBorder.top = aBorder.bottom = 0; const nsStyleBorder* borderData = GetStyleBorder(); borderData->GetBorder(aBorder); return &aBorder; } NS_IMETHODIMP nsTableCellFrame::GetFrameType(nsIAtom** aType) const { NS_PRECONDITION(nsnull != aType, "null OUT parameter pointer"); *aType = nsLayoutAtoms::tableCellFrame; NS_ADDREF(*aType); return NS_OK; } #ifdef DEBUG NS_IMETHODIMP nsTableCellFrame::GetFrameName(nsAString& aResult) const { return MakeFrameName(NS_LITERAL_STRING("TableCell"), aResult); } #endif void nsTableCellFrame::SetCollapseOffsetX(nsIPresContext* aPresContext, nscoord aXOffset) { // Get the frame property (creating a point struct if necessary) nsPoint* offset = (nsPoint*)nsTableFrame::GetProperty(aPresContext, this, nsLayoutAtoms::collapseOffsetProperty, PR_TRUE); if (offset) { offset->x = aXOffset; } } void nsTableCellFrame::SetCollapseOffsetY(nsIPresContext* aPresContext, nscoord aYOffset) { // Get the property (creating a point struct if necessary) nsPoint* offset = (nsPoint*)nsTableFrame::GetProperty(aPresContext, this, nsLayoutAtoms::collapseOffsetProperty, PR_TRUE); if (offset) { offset->y = aYOffset; } } void nsTableCellFrame::GetCollapseOffset(nsIPresContext* aPresContext, nsPoint& aOffset) { // See if the property is set nsPoint* offset = (nsPoint*)nsTableFrame::GetProperty(aPresContext, this, nsLayoutAtoms::collapseOffsetProperty); if (offset) { aOffset = *offset; } else { aOffset.MoveTo(0, 0); } } // nsBCTableCellFrame nsBCTableCellFrame::nsBCTableCellFrame() :nsTableCellFrame() { mTopBorder = mRightBorder = mBottomBorder = mLeftBorder = 0; } nsBCTableCellFrame::~nsBCTableCellFrame() { } NS_IMETHODIMP nsBCTableCellFrame::GetFrameType(nsIAtom** aType) const { NS_PRECONDITION(nsnull != aType, "null OUT parameter pointer"); *aType = nsLayoutAtoms::bcTableCellFrame; NS_ADDREF(*aType); return NS_OK; } #ifdef DEBUG NS_IMETHODIMP nsBCTableCellFrame::GetFrameName(nsAString& aResult) const { return MakeFrameName(NS_LITERAL_STRING("BCTableCell"), aResult); } #endif void nsBCTableCellFrame::SetBorderWidth(const nsMargin& aBorder) { mTopBorder = aBorder.top; mRightBorder = aBorder.right; mBottomBorder = aBorder.bottom; mLeftBorder = aBorder.left; } nsMargin* nsBCTableCellFrame::GetBorderWidth(float aPixelsToTwips, nsMargin& aBorder) const { aBorder.top = (aPixelsToTwips) ? NSToCoordRound(aPixelsToTwips * mTopBorder) : mTopBorder; aBorder.right = (aPixelsToTwips) ? NSToCoordRound(aPixelsToTwips * mRightBorder) : mRightBorder; aBorder.bottom = (aPixelsToTwips) ? NSToCoordRound(aPixelsToTwips * mBottomBorder): mBottomBorder; aBorder.left = (aPixelsToTwips) ? NSToCoordRound(aPixelsToTwips * mLeftBorder): mLeftBorder; return &aBorder; } nscoord nsBCTableCellFrame::GetBorderWidth(PRUint8 aSide) const { switch(aSide) { case NS_SIDE_TOP: return (PRUint8)mTopBorder; case NS_SIDE_RIGHT: return (PRUint8)mRightBorder; case NS_SIDE_BOTTOM: return (PRUint8)mBottomBorder; default: return (PRUint8)mLeftBorder; } } void nsBCTableCellFrame::SetBorderWidth(PRUint8 aSide, nscoord aValue) { switch(aSide) { case NS_SIDE_TOP: mTopBorder = aValue; break; case NS_SIDE_RIGHT: mRightBorder = aValue; break; case NS_SIDE_BOTTOM: mBottomBorder = aValue; break; default: mLeftBorder = aValue; } } void nsBCTableCellFrame::PaintUnderlay(nsIPresContext& aPresContext, nsIRenderingContext& aRenderingContext, const nsRect& aDirtyRect, PRUint32& aFlags, const nsStyleTableBorder& aCellTableStyle, const nsStyleBorder& aStyleBorder, const nsStylePadding& aStylePadding, PRBool aVisibleBackground, PRBool& aPaintChildren) { // Draw the background only during pass1. if (aVisibleBackground && !(aFlags & BORDER_COLLAPSE_BACKGROUNDS)) { // make border-width reflect border-collapse assigned border GET_PIXELS_TO_TWIPS(&aPresContext, p2t); nsMargin borderWidth; GetBorderWidth(p2t, borderWidth); nsStyleBorder myBorder = aStyleBorder; nsStyleCoord coord(borderWidth.top); myBorder.mBorder.SetTop(coord); coord.SetCoordValue(borderWidth.right); myBorder.mBorder.SetRight(coord); coord.SetCoordValue(borderWidth.bottom); myBorder.mBorder.SetBottom(coord); coord.SetCoordValue(borderWidth.left); myBorder.mBorder.SetLeft(coord); myBorder.RecalcData(); nsRect rect(0, 0, mRect.width, mRect.height); nsCSSRendering::PaintBackground(&aPresContext, aRenderingContext, this, aDirtyRect, rect, myBorder, aStylePadding, PR_TRUE); // borders are painted by nsTableFrame } // don't paint the children if it's pass1 aPaintChildren = (aFlags & BORDER_COLLAPSE_BACKGROUNDS); }