gecko-dev/layout/tables/nsTableCellFrame.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
*
* The contents of this file are subject to the Netscape Public
* License Version 1.1 (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 Netscape are
* Copyright (C) 1998 Netscape Communications Corporation. All
* Rights Reserved.
*
* Contributor(s):
* Pierre Phaneuf <pp@ludusdesign.com>
*/
#include "nsTableFrame.h"
#include "nsTableColFrame.h"
#include "nsTableCellFrame.h"
#include "nsTableFrame.h"
#include "nsIReflowCommand.h"
#include "nsIStyleContext.h"
#include "nsStyleConsts.h"
#include "nsIPresContext.h"
#include "nsIRenderingContext.h"
#include "nsCSSRendering.h"
#include "nsIContent.h"
#include "nsIHTMLContent.h"
#include "nsHTMLIIDs.h"
#include "nsHTMLParts.h"
#include "nsHTMLValue.h"
#include "nsHTMLAtoms.h"
#include "nsHTMLIIDs.h"
#include "nsVoidArray.h"
#include "nsIView.h"
#include "nsStyleUtil.h"
#include "nsLayoutAtoms.h"
#include "nsIFrameManager.h"
#include "nsIPresShell.h"
#include "nsCOMPtr.h"
#include "nsIHTMLTableCellElement.h"
#include "nsIDOMHTMLTableCellElement.h"
//TABLECELL SELECTION
#include "nsIFrameSelection.h"
#include "nsILookAndFeel.h"
static NS_DEFINE_IID(kIHTMLTableCellElementIID, NS_IHTMLTABLECELLELEMENT_IID);
static NS_DEFINE_IID(kIDOMHTMLTableCellElementIID, NS_IDOMHTMLTABLECELLELEMENT_IID);
nsTableCellFrame::nsTableCellFrame()
{
mColIndex = 0;
mPriorAvailWidth = 0;
mBorderEdges = nsnull;
}
nsTableCellFrame::~nsTableCellFrame()
{
delete mBorderEdges;
}
NS_IMETHODIMP
nsTableCellFrame::Init(nsIPresContext* aPresContext,
nsIContent* aContent,
nsIFrame* aParent,
nsIStyleContext* 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;
}
NS_IMETHODIMP
nsTableCellFrame::AttributeChanged(nsIPresContext* aPresContext,
nsIContent* aChild,
PRInt32 aNameSpaceID,
nsIAtom* aAttribute,
PRInt32 aHint)
{
// 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::SetPass1MaxElementSize(const nsSize& aMaxElementSize)
{
mPass1MaxElementSize.height = aMaxElementSize.height;
nscoord maxElemWidth = aMaxElementSize.width;
// the max elem width needs to be set to the max of aMaxElementSize.width and
// the width attribute if both nowrap and width are present on the cell.
const nsStylePosition* stylePosition;
GetStyleData(eStyleStruct_Position, ((const nsStyleStruct *&)stylePosition));
if (stylePosition->mWidth.GetUnit() == eStyleUnit_Coord) {
nscoord styleWidth = stylePosition->mWidth.GetCoordValue();
if (styleWidth > 0) {
nsIDOMHTMLTableCellElement* cellContent = nsnull;
nsresult rv = mContent->QueryInterface(kIDOMHTMLTableCellElementIID, (void **)&cellContent);
if (cellContent && NS_SUCCEEDED(rv)) {
PRBool nowrap = PR_FALSE;
cellContent->GetNoWrap(&nowrap);
if (nowrap) {
maxElemWidth = PR_MAX(maxElemWidth, styleWidth);
}
NS_RELEASE(cellContent);
}
}
}
mPass1MaxElementSize.width = 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)) && (nsnull!=tableFrame)) {
SetColIndex(aColIndex);
if (NS_STYLE_BORDER_COLLAPSE == tableFrame->GetBorderCollapseStyle()) {
if (mBorderEdges) delete mBorderEdges; // this could be non null during a reinitialization
mBorderEdges = new nsBorderEdges;
mBorderEdges->mOutsideEdge=PR_FALSE;
PRInt32 rowspan = tableFrame->GetEffectiveRowSpan(*this);
PRInt32 i;
for (i=0; i<rowspan; i++) {
nsBorderEdge *borderToAdd = new nsBorderEdge();
mBorderEdges->mEdges[NS_SIDE_LEFT].AppendElement(borderToAdd);
borderToAdd = new nsBorderEdge();
mBorderEdges->mEdges[NS_SIDE_RIGHT].AppendElement(borderToAdd);
}
PRInt32 colspan = tableFrame->GetEffectiveColSpan(*this);
for (i=0; i<colspan; i++) {
nsBorderEdge *borderToAdd = new nsBorderEdge();
mBorderEdges->mEdges[NS_SIDE_TOP].AppendElement(borderToAdd);
borderToAdd = new nsBorderEdge();
mBorderEdges->mEdges[NS_SIDE_BOTTOM].AppendElement(borderToAdd);
}
}
}
}
nsresult nsTableCellFrame::SetColIndex(PRInt32 aColIndex)
{
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(&cell);
nsCOMPtr<nsIContent> cell;
nsresult rv = GetContent(getter_AddRefs(cell));
if (NS_FAILED(rv) || !cell)
return rv;
nsIHTMLTableCellElement* cellContent = nsnull;
rv = cell->QueryInterface(kIHTMLTableCellElementIID,
(void **)&cellContent); // cellContent: REFCNT++
if (cellContent && NS_SUCCEEDED(rv)) { // it's a table cell
cellContent->SetColIndex(aColIndex);
NS_RELEASE(cellContent);
}
return rv;
}
void nsTableCellFrame::SetBorderEdgeLength(PRUint8 aSide,
PRInt32 aIndex,
nscoord aLength)
{
NS_PRECONDITION(mBorderEdges, "haven't allocated border edges struct");
if ((NS_SIDE_LEFT==aSide) || (NS_SIDE_RIGHT==aSide))
{
PRInt32 baseRowIndex;
GetRowIndex(baseRowIndex);
PRInt32 rowIndex = aIndex-baseRowIndex;
nsBorderEdge *border = (nsBorderEdge *)(mBorderEdges->mEdges[aSide].ElementAt(rowIndex));
if (border) {
border->mLength = aLength;
}
}
else {
NS_ASSERTION(PR_FALSE, "bad arg aSide passed to SetBorderEdgeLength");
}
}
NS_METHOD nsTableCellFrame::Paint(nsIPresContext* aPresContext,
nsIRenderingContext& aRenderingContext,
const nsRect& aDirtyRect,
nsFramePaintLayer aWhichLayer)
{
const nsStyleDisplay* disp =
(const nsStyleDisplay*)mStyleContext->GetStyleData(eStyleStruct_Display);
if (NS_FRAME_PAINT_LAYER_BACKGROUND == aWhichLayer) {
if (disp->IsVisibleOrCollapsed()) {
const nsStyleColor* myColor =
(const nsStyleColor*)mStyleContext->GetStyleData(eStyleStruct_Color);
//TABLECELL SELECTION
PRInt16 displaySelection;
displaySelection = DisplaySelection(aPresContext);
if (displaySelection)
{
nsFrameState frameState;
PRBool isSelected;
GetFrameState(&frameState);
isSelected = (frameState & NS_FRAME_SELECTED_CONTENT) == NS_FRAME_SELECTED_CONTENT;
if (isSelected)
{
nsCOMPtr<nsIPresShell> shell;
nsresult result = aPresContext->GetShell(getter_AddRefs(shell));
if (NS_FAILED(result))
return result;
nsCOMPtr<nsIFrameSelection> frameSelection;
result = shell->GetFrameSelection(getter_AddRefs(frameSelection));
if (NS_SUCCEEDED(result))
{
PRBool tableCellSelectionMode;
result = frameSelection->GetTableCellSelection(&tableCellSelectionMode);
if (NS_SUCCEEDED(result) && tableCellSelectionMode)
{
frameSelection->GetTableCellSelectionStyleColor(&myColor);
if(displaySelection==nsISelectionController::SELECTION_DISABLED)
{
((nsStyleColor *)myColor)->mBackgroundColor = NS_RGB(176,176,176);// disabled color
}
else
{
nsILookAndFeel* look = nsnull;
if (NS_SUCCEEDED(aPresContext->GetLookAndFeel(&look)) && look) {
look->GetColor(nsILookAndFeel::eColor_TextSelectBackground, ((nsStyleColor *)myColor)->mBackgroundColor);//VERY BAD CAST..TEMPORARY
NS_RELEASE(look);
}
}
}
}
}
}
//END SELECTION
const nsStyleSpacing* mySpacing =
(const nsStyleSpacing*)mStyleContext->GetStyleData(eStyleStruct_Spacing);
NS_ASSERTION(nsnull!=myColor, "bad style color");
NS_ASSERTION(nsnull!=mySpacing, "bad style spacing");
const nsStyleTable* cellTableStyle;
GetStyleData(eStyleStruct_Table, ((const nsStyleStruct *&)cellTableStyle));
nsRect rect(0, 0, mRect.width, mRect.height);
// only non empty cells render their background
if (PR_FALSE == GetContentEmpty()) {
nsCSSRendering::PaintBackground(aPresContext, aRenderingContext, this,
aDirtyRect, rect, *myColor, *mySpacing, 0, 0);
}
// empty cells do not render their border
PRBool renderBorder = PR_TRUE;
if (PR_TRUE==GetContentEmpty())
{
if (NS_STYLE_TABLE_EMPTY_CELLS_HIDE==cellTableStyle->mEmptyCells)
renderBorder=PR_FALSE;
}
if (PR_TRUE==renderBorder)
{
PRIntn skipSides = GetSkipSides();
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)) && (nsnull!=tableFrame))
{
const nsStyleTable* tableStyle;
tableFrame->GetStyleData(eStyleStruct_Table, ((const nsStyleStruct *&)tableStyle));
if (NS_STYLE_BORDER_SEPARATE == tableFrame->GetBorderCollapseStyle())
{
nsCSSRendering::PaintBorder(aPresContext, aRenderingContext, this,
aDirtyRect, rect, *mySpacing, mStyleContext, skipSides);
}
else
{
nsCSSRendering::PaintBorderEdges(aPresContext, aRenderingContext, this,
aDirtyRect, rect, mBorderEdges, mStyleContext, skipSides);
}
}
}
}
}
#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
// 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);
}
PaintChildren(aPresContext, aRenderingContext, aDirtyRect, aWhichLayer);
if ((0 != offset.x) || (0 != offset.y)) {
aRenderingContext.PopState(clipState);
}
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->GetNextSibling(&kid);
}
}
//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<nsIPresShell> shell;
nsresult result = aPresContext->GetShell(getter_AddRefs(shell));
if (NS_FAILED(result))
return result;
nsCOMPtr<nsIFrameSelection> 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(frameRect);
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();
}
void nsTableCellFrame::SetBorderEdge(PRUint8 aSide,
PRInt32 aRowIndex,
PRInt32 aColIndex,
nsBorderEdge *aBorder,
nscoord aOddAmountToAdd)
{
NS_PRECONDITION(mBorderEdges, "haven't allocated border edges struct");
nsBorderEdge *border = nsnull;
switch (aSide)
{
case NS_SIDE_TOP:
{
PRInt32 baseColIndex;
GetColIndex(baseColIndex);
PRInt32 colIndex = aColIndex-baseColIndex;
border = (nsBorderEdge *)(mBorderEdges->mEdges[aSide].ElementAt(colIndex));
mBorderEdges->mMaxBorderWidth.top = PR_MAX(aBorder->mWidth+aOddAmountToAdd, mBorderEdges->mMaxBorderWidth.top);
break;
}
case NS_SIDE_BOTTOM:
{
PRInt32 baseColIndex;
GetColIndex(baseColIndex);
PRInt32 colIndex = aColIndex-baseColIndex;
border = (nsBorderEdge *)(mBorderEdges->mEdges[aSide].ElementAt(colIndex));
mBorderEdges->mMaxBorderWidth.bottom = PR_MAX(aBorder->mWidth+aOddAmountToAdd, mBorderEdges->mMaxBorderWidth.bottom);
break;
}
case NS_SIDE_LEFT:
{
PRInt32 baseRowIndex;
GetRowIndex(baseRowIndex);
PRInt32 rowIndex = aRowIndex-baseRowIndex;
border = (nsBorderEdge *)(mBorderEdges->mEdges[aSide].ElementAt(rowIndex));
mBorderEdges->mMaxBorderWidth.left = PR_MAX(aBorder->mWidth+aOddAmountToAdd, mBorderEdges->mMaxBorderWidth.left);
break;
}
case NS_SIDE_RIGHT:
{
PRInt32 baseRowIndex;
GetRowIndex(baseRowIndex);
PRInt32 rowIndex = aRowIndex-baseRowIndex;
border = (nsBorderEdge *)(mBorderEdges->mEdges[aSide].ElementAt(rowIndex));
mBorderEdges->mMaxBorderWidth.right = PR_MAX(aBorder->mWidth+aOddAmountToAdd, mBorderEdges->mMaxBorderWidth.right);
break;
}
}
if (nsnull!=border) {
*border=*aBorder;
border->mWidth += aOddAmountToAdd;
}
else {
//XXX determine why this was asserting (after beta)
//NS_ASSERTION(PR_FALSE, "bad border edge state");
}
}
/**
*
* Align the cell's child frame within the cell
*
*/
void nsTableCellFrame::VerticallyAlignChild(nsIPresContext* aPresContext,
const nsHTMLReflowState& aReflowState)
{
const nsStyleText* textStyle =
(const nsStyleText*)mStyleContext->GetStyleData(eStyleStruct_Text);
/* XXX: remove tableFrame when border-collapse inherits */
nsTableFrame* tableFrame = nsnull;
(void) nsTableFrame::GetTableFrame(this, tableFrame);
nsMargin borderPadding;
GetCellBorder (borderPadding, tableFrame);
nsMargin padding = nsTableFrame::GetPadding(aReflowState, this);
borderPadding += padding;
nscoord topInset = borderPadding.top;
nscoord bottomInset = borderPadding.bottom;
PRUint8 verticalAlignFlags = NS_STYLE_VERTICAL_ALIGN_MIDDLE;
if (textStyle->mVerticalAlign.GetUnit() == eStyleUnit_Enumerated) {
verticalAlignFlags = textStyle->mVerticalAlign.GetIntValue();
}
nscoord height = mRect.height;
nsRect kidRect;
nsIFrame* firstKid = mFrames.FirstChild();
firstKid->GetRect(kidRect);
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 align = baseline
// XXX Not yet implemented, so fall through to top
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;
}
firstKid->MoveTo(aPresContext, 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);
}
}
PRInt32 nsTableCellFrame::GetRowSpan()
{
PRInt32 rowSpan=1;
nsIHTMLContent *hc=nsnull;
nsresult rv = mContent->QueryInterface(kIHTMLContentIID, (void**) &hc);
if (NS_OK==rv)
{
nsHTMLValue val;
hc->GetHTMLAttribute(nsHTMLAtoms::rowspan, val);
if (eHTMLUnit_Integer == val.GetUnit()) {
rowSpan=val.GetIntValue();
}
NS_RELEASE(hc);
}
return rowSpan;
}
PRInt32 nsTableCellFrame::GetColSpan()
{
PRInt32 colSpan=1;
nsIHTMLContent *hc=nsnull;
nsresult rv = mContent->QueryInterface(kIHTMLContentIID, (void**) &hc);
if (NS_OK==rv)
{
nsHTMLValue val;
hc->GetHTMLAttribute(nsHTMLAtoms::colspan, val);
if (eHTMLUnit_Integer == val.GetUnit()) {
colSpan=val.GetIntValue();
}
NS_RELEASE(hc);
}
return colSpan;
}
static
void DebugCheckChildSize(nsIFrame* aChild,
nsHTMLReflowMetrics& aMet,
nsSize& aAvailSize,
PRBool aIsPass2Reflow)
{
/* approved for commenting out by rickg
if (aMet.width > aAvailSize.width) {
nsAutoString tmp;
aChild->GetFrameName(tmp);
printf("WARNING: cell ");
fputs(tmp, stdout);
printf(" content has desired width %d given avail width %d\n",
aMet.width, aAvailSize.width);
}
*/
if (aIsPass2Reflow) {
if ((aMet.width < 0) || (aMet.width > 60000)) {
printf("WARNING: cell content %p has large width %d \n", aChild, aMet.width);
}
if ((aMet.height < 0) || (aMet.height > 60000)) {
printf("WARNING: cell content %p has large height %d \n", aChild, aMet.height);
}
}
if (aMet.maxElementSize) {
nscoord tmp = aMet.maxElementSize->width;
if ((tmp < 0) || (tmp > 60000)) {
printf("WARNING: cell content %p has large max element width %d \n", aChild, tmp);
}
tmp = aMet.maxElementSize->height;
if ((tmp < 0) || (tmp > 60000)) {
printf("WARNING: cell content %p has large max element height %d \n", aChild, tmp);
}
}
}
/**
*/
NS_METHOD nsTableCellFrame::Reflow(nsIPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus)
{
DO_GLOBAL_REFLOW_COUNT("nsTableCellFrame", aReflowState.reason);
if (nsDebugTable::gRflCell) nsTableFrame::DebugReflow("TC::Rfl", this, &aReflowState, nsnull);
nsresult rv = NS_OK;
// this should probably be cached somewhere
nsCompatibility compatMode;
aPresContext->GetCompatibilityMode(&compatMode);
// Initialize out parameter
if (nsnull != aDesiredSize.maxElementSize) {
aDesiredSize.maxElementSize->width = 0;
aDesiredSize.maxElementSize->height = 0;
}
aStatus = NS_FRAME_COMPLETE;
nsSize availSize(aReflowState.availableWidth, aReflowState.availableHeight);
nsSize maxElementSize;
nsSize *pMaxElementSize = aDesiredSize.maxElementSize;
if (NS_UNCONSTRAINEDSIZE==aReflowState.availableWidth)
pMaxElementSize = &maxElementSize;
/* XXX: remove tableFrame when border-collapse inherits */
nsTableFrame* tableFrame=nsnull;
rv = nsTableFrame::GetTableFrame(this, tableFrame);
nsMargin borderPadding = aReflowState.mComputedPadding;
nsMargin border;
GetCellBorder(border, tableFrame);
if ((NS_UNCONSTRAINEDSIZE == availSize.width) || !GetContentEmpty()) {
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)
{
// We *must* do this otherwise incremental reflow that's
// passing through will not work right.
nsIFrame* next;
aReflowState.reflowCommand->GetNext(next);
// if it is a StyleChanged reflow targeted at this cell frame,
// handle that here
// first determine if this frame is the target or not
nsIFrame *target=nsnull;
rv = aReflowState.reflowCommand->GetTarget(target);
if ((PR_TRUE==NS_SUCCEEDED(rv)) && (nsnull!=target))
{
if (this==target)
{
nsIReflowCommand::ReflowType type;
aReflowState.reflowCommand->GetType(type);
if (nsIReflowCommand::StyleChanged==type)
{
isStyleChanged = PR_TRUE;
}
else {
NS_ASSERTION(PR_FALSE, "table cell target of illegal incremental reflow type");
}
}
}
// if any of these conditions are not true, we just pass the reflow command down
}
// 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(pMaxElementSize, aDesiredSize.mFlags);
kidSize.width=kidSize.height=kidSize.ascent=kidSize.descent=0;
SetPriorAvailWidth(aReflowState.availableWidth);
nsIFrame* firstKid = mFrames.FirstChild();
nsHTMLReflowState kidReflowState(aPresContext, aReflowState, firstKid,
availSize);
// If it was a style change targeted at us, then reflow the child using
// the special reflow reason
if (isStyleChanged) {
kidReflowState.reason = eReflowReason_StyleChange;
kidReflowState.reflowCommand = 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 (eReflowReason_Initial == aReflowState.reason) {
kidOrigin.MoveTo(leftInset, topInset);
} else {
// handle percent padding-left which was 0 during initial reflow
if (eStyleUnit_Percent == aReflowState.mStyleSpacing->mPadding.GetLeftUnit()) {
nsRect kidRect;
firstKid->GetRect(kidRect);
// only move in the x direction for the same reason as above
kidOrigin.MoveTo(leftInset, kidRect.y);
firstKid->MoveTo(aPresContext, leftInset, kidRect.y);
}
firstKid->GetOrigin(kidOrigin);
}
if (nsDebugTable::gRflArea) nsTableFrame::DebugReflow("Area::Rfl en", firstKid, &kidReflowState, nsnull);
ReflowChild(firstKid, aPresContext, kidSize, kidReflowState,
kidOrigin.x, kidOrigin.y, 0, aStatus);
if (nsDebugTable::gRflArea) nsTableFrame::DebugReflow("Area::Rfl ex", firstKid, nsnull, &kidSize, aStatus);
#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);
}
const nsStylePosition* pos;
GetStyleData(eStyleStruct_Position, ((const nsStyleStruct *&)pos));
// calculate the min cell width
float p2t;
aPresContext->GetScaledPixelsToTwips(&p2t);
nscoord onePixel = NSIntPixelsToTwips(1, p2t);
nscoord smallestMinWidth = onePixel;
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)) {
// Standard mode should probably be 0 pixels high instead of 1
PRInt32 pixHeight = (eCompatibility_Standard == compatMode) ? 1 : 2;
kidSize.height = NSIntPixelsToTwips(pixHeight, p2t);
if ((nsnull != aDesiredSize.maxElementSize) && (0 == pMaxElementSize->height))
pMaxElementSize->height = kidSize.height;
}
}
// end 0 dimensioned cells
kidSize.width = PR_MAX(kidSize.width, smallestMinWidth);
// Place the child
//////////////////////////////// HACK //////////////////////////////
kidSize.width = PR_MIN(kidSize.width, availSize.width);
///////////////////////////// END HACK /////////////////////////////
FinishReflowChild(firstKid, aPresContext, kidSize,
kidOrigin.x, kidOrigin.y, 0);
// Return our size and our result
// 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;
}
// 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;
}
// set the cell's desired size and max element size
aDesiredSize.width = cellWidth;
aDesiredSize.height = cellHeight;
aDesiredSize.ascent = topInset;
aDesiredSize.descent = bottomInset;
if (aDesiredSize.mFlags & NS_REFLOW_CALC_MAX_WIDTH) {
aDesiredSize.mMaximumWidth = kidSize.mMaximumWidth + leftInset + rightInset;
}
if (nsnull!=aDesiredSize.maxElementSize) {
*aDesiredSize.maxElementSize = *pMaxElementSize;
if (0!=pMaxElementSize->height) {
aDesiredSize.maxElementSize->height += topInset + bottomInset;
}
aDesiredSize.maxElementSize->width = PR_MAX(smallestMinWidth, aDesiredSize.maxElementSize->width);
aDesiredSize.maxElementSize->width += leftInset + rightInset;
}
// remember my desired size for this reflow
SetDesiredSize(aDesiredSize);
aDesiredSize.ascent = aDesiredSize.height;
aDesiredSize.descent = 0;
if (nsDebugTable::gRflCell) nsTableFrame::DebugReflow("TC::Rfl ex", this, nsnull, &aDesiredSize, aStatus);
return NS_OK;
}
/**
*
* Update the border style to map to the HTML border style
*
*/
void nsTableCellFrame::MapHTMLBorderStyle(nsIPresContext* aPresContext,
nsStyleSpacing& aSpacingStyle,
nsTableFrame* aTableFrame)
{
//adjust the border style based on the table rules attribute
const nsStyleTable* tableStyle;
aTableFrame->GetStyleData(eStyleStruct_Table, (const nsStyleStruct *&)tableStyle);
switch (tableStyle->mRules)
{
case NS_STYLE_TABLE_RULES_NONE:
aSpacingStyle.SetBorderStyle(NS_SIDE_TOP, NS_STYLE_BORDER_STYLE_NONE);
aSpacingStyle.SetBorderStyle(NS_SIDE_LEFT, NS_STYLE_BORDER_STYLE_NONE);
aSpacingStyle.SetBorderStyle(NS_SIDE_BOTTOM, NS_STYLE_BORDER_STYLE_NONE);
aSpacingStyle.SetBorderStyle(NS_SIDE_RIGHT, NS_STYLE_BORDER_STYLE_NONE);
break;
case NS_STYLE_TABLE_RULES_COLS:
aSpacingStyle.SetBorderStyle(NS_SIDE_TOP, NS_STYLE_BORDER_STYLE_NONE);
aSpacingStyle.SetBorderStyle(NS_SIDE_BOTTOM, NS_STYLE_BORDER_STYLE_NONE);
break;
case NS_STYLE_TABLE_RULES_ROWS:
aSpacingStyle.SetBorderStyle(NS_SIDE_LEFT, NS_STYLE_BORDER_STYLE_NONE);
aSpacingStyle.SetBorderStyle(NS_SIDE_RIGHT, NS_STYLE_BORDER_STYLE_NONE);
break;
default:
// do nothing for "GROUPS" or "ALL" or for any illegal value
// "GROUPS" will be handled in nsTableFrame::ProcessGroupRules
break;
}
}
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;
}
void nsTableCellFrame::MapBorderPadding(nsIPresContext* aPresContext)
{
// Check to see if the table has cell padding or defined for the table. If true,
// then this setting overrides any specific border or padding information in the
// cell. If these attributes are not defined, the the cells attributes are used
nsTableFrame* tableFrame;
nsTableFrame::GetTableFrame(this, tableFrame);
NS_ASSERTION(tableFrame,"Table must not be null");
if (!tableFrame)
return;
// get the table frame style context, and from it get cellpadding, cellspacing, and border info
const nsStyleTable* tableStyle;
tableFrame->GetStyleData(eStyleStruct_Table, (const nsStyleStruct *&)tableStyle);
const nsStyleSpacing* tableSpacingStyle;
tableFrame->GetStyleData(eStyleStruct_Spacing,(const nsStyleStruct *&)tableSpacingStyle);
nsStyleSpacing* spacingData = (nsStyleSpacing*)mStyleContext->GetMutableStyleData(eStyleStruct_Spacing);
float p2t;
aPresContext->GetPixelsToTwips(&p2t);
// Get the table's cellpadding or use 2 pixels as the default if it is not set.
// This assumes that ua.css does not set padding for the cell.
nscoord defaultPadding = tableFrame->GetCellPadding();
if (-1 == defaultPadding) { // not set in table
defaultPadding = NSIntPixelsToTwips(1, p2t);
}
// if the padding is not already set, set it to the table's cellpadding
if (eStyleUnit_Null == spacingData->mPadding.GetTopUnit())
spacingData->mPadding.SetTop(defaultPadding);
if (eStyleUnit_Null == spacingData->mPadding.GetRightUnit())
spacingData->mPadding.SetRight(defaultPadding);
if (eStyleUnit_Null == spacingData->mPadding.GetBottomUnit())
spacingData->mPadding.SetBottom(defaultPadding);
if (eStyleUnit_Null == spacingData->mPadding.GetLeftUnit())
spacingData->mPadding.SetLeft(defaultPadding);
MapHTMLBorderStyle(aPresContext, *spacingData, tableFrame);
MapVAlignAttribute(aPresContext, tableFrame);
MapHAlignAttribute(aPresContext, tableFrame);
}
/* XXX: this code will not work properly until the style and layout code has been updated
* as outlined in Bugzilla bug report 1802 and 915 */
void nsTableCellFrame::MapVAlignAttribute(nsIPresContext* aPresContext, nsTableFrame *aTableFrame)
{
const nsStyleText* textStyle;
GetStyleData(eStyleStruct_Text,(const nsStyleStruct *&)textStyle);
// check if valign is set on the cell
// this condition will also be true if we inherited valign from the row or rowgroup
if (textStyle->mVerticalAlign.GetUnit() == eStyleUnit_Enumerated) {
return; // valign is already set on this cell
}
// check if valign is set on the cell's COL (or COLGROUP by inheritance)
nsTableColFrame* colFrame;
PRInt32 colIndex;
GetColIndex(colIndex);
aTableFrame->GetColumnFrame(colIndex, colFrame);
if (colFrame) {
const nsStyleText* colTextStyle;
colFrame->GetStyleData(eStyleStruct_Text,(const nsStyleStruct *&)colTextStyle);
if (colTextStyle->mVerticalAlign.GetUnit() == eStyleUnit_Enumerated) {
nsStyleText* cellTextStyle = (nsStyleText*)mStyleContext->GetMutableStyleData(eStyleStruct_Text);
cellTextStyle->mVerticalAlign.SetIntValue(colTextStyle->mVerticalAlign.GetIntValue(), eStyleUnit_Enumerated);
return; // valign set from COL info
}
}
// otherwise, set the vertical align attribute to the HTML default
nsStyleText* cellTextStyle = (nsStyleText*)mStyleContext->GetMutableStyleData(eStyleStruct_Text);
cellTextStyle->mVerticalAlign.SetIntValue(NS_STYLE_VERTICAL_ALIGN_MIDDLE, eStyleUnit_Enumerated);
}
/* XXX: this code will not work properly until the style and layout code has been updated
* as outlined in Bugzilla bug report 1802 and 915.
* In particular, mTextAlign has to be an nsStyleCoord, not just an int */
void nsTableCellFrame::MapHAlignAttribute(nsIPresContext* aPresContext,
nsTableFrame* aTableFrame)
{
#if 0
const nsStyleText* textStyle;
GetStyleData(eStyleStruct_Text,(const nsStyleStruct *&)textStyle);
// check if halign is set on the cell
// cells do not inherited halign from the row or rowgroup
if (NS_STYLE_TEXT_ALIGN_DEFAULT != textStyle->mTextAlign) {
return; // text align is already set on this cell
}
// check if halign is set on the cell's ROW (or ROWGROUP by inheritance)
nsIFrame* rowFrame;
GetParent(&rowFrame);
const nsStyleText* rowTextStyle;
rowFrame->GetStyleData(eStyleStruct_Text,(const nsStyleStruct *&)rowTextStyle);
if (NS_STYLE_TEXT_ALIGN_DEFAULT != rowTextStyle->mTextAlign) {
nsStyleText* cellTextStyle = (nsStyleText*)mStyleContext->GetMutableStyleData(eStyleStruct_Text);
cellTextStyle->mTextAlign = rowTextStyle->mTextAlign;
return; // halign set from ROW info
}
// check if halign is set on the cell's COL (or COLGROUP by inheritance)
nsTableColFrame* colFrame;
PRInt32 colIndex;
GetColIndex(colIndex);
aTableFrame->GetColumnFrame(colIndex, colFrame);
if (colFrame) {
const nsStyleText* colTextStyle;
colFrame->GetStyleData(eStyleStruct_Text,(const nsStyleStruct *&)colTextStyle);
if (NS_STYLE_TEXT_ALIGN_DEFAULT != colTextStyle->mTextAlign) {
nsStyleText* cellTextStyle = (nsStyleText*)mStyleContext->GetMutableStyleData(eStyleStruct_Text);
cellTextStyle->mTextAlign = colTextStyle->mTextAlign;
return; // halign set from COL info
}
}
// otherwise, set the text align to the HTML default (center for TH, left for TD)
nsStyleText* cellTextStyle = (nsStyleText*)mStyleContext->GetMutableStyleData(eStyleStruct_Text);
nsIAtom* tag;
if (mContent) {
mContent->GetTag(tag);
if (tag) {
cellTextStyle->mTextAlign = (nsHTMLAtoms::th == tag)
? NS_STYLE_TEXT_ALIGN_CENTER
: NS_STYLE_TEXT_ALIGN_LEFT;
}
NS_IF_RELEASE(tag);
}
#endif
}
// Subclass hook for style post processing
NS_METHOD nsTableCellFrame::DidSetStyleContext(nsIPresContext* aPresContext)
{
#ifdef NOISY_STYLE
printf("nsTableCellFrame::DidSetStyleContext \n");
#endif
MapBorderPadding(aPresContext);
mStyleContext->RecalcAutomaticData(aPresContext);
return NS_OK;
}
/* ----- 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;
} else {
return nsHTMLContainerFrame::QueryInterface(aIID, aInstancePtr);
}
}
/* 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 = 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)
cellFrame->QueryInterface(NS_GET_IID(nsITableCellLayout), (void **)aCellLayout);
}
return NS_OK;
}
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)
cellFrame->QueryInterface(NS_GET_IID(nsITableCellLayout), (void **)aCellLayout);
return NS_OK;
}
nsresult
NS_NewTableCellFrame(nsIPresShell* aPresShell, nsIFrame** aNewFrame)
{
NS_PRECONDITION(aNewFrame, "null OUT ptr");
if (nsnull == aNewFrame) {
return NS_ERROR_NULL_POINTER;
}
nsTableCellFrame* it = new (aPresShell) nsTableCellFrame;
if (nsnull == it) {
return NS_ERROR_OUT_OF_MEMORY;
}
*aNewFrame = it;
return NS_OK;
}
/* ----- methods from CellLayoutData ----- */
/**
* Given an Edge, find the opposing edge (top<-->bottom, left<-->right)
*
**/
PRUint8 nsTableCellFrame::GetOpposingEdge(PRUint8 aEdge)
{
PRUint8 result;
switch (aEdge)
{
case NS_SIDE_LEFT:
result = NS_SIDE_RIGHT;
break;
case NS_SIDE_RIGHT:
result = NS_SIDE_LEFT;
break;
case NS_SIDE_TOP:
result = NS_SIDE_BOTTOM;
break;
case NS_SIDE_BOTTOM:
result = NS_SIDE_TOP;
break;
default:
result = NS_SIDE_TOP;
}
return result;
}
void
nsTableCellFrame::GetCellBorder(nsMargin& aBorder,
nsTableFrame* aTableFrame)
{
aBorder.left = aBorder.right = aBorder.top = aBorder.bottom = 0;
if (nsnull==aTableFrame) {
return;
}
if (NS_STYLE_BORDER_COLLAPSE==aTableFrame->GetBorderCollapseStyle()) {
NS_PRECONDITION(mBorderEdges, "haven't allocated border edges struct");
aBorder = mBorderEdges->mMaxBorderWidth;
} else {
const nsStyleSpacing* spacing;
GetStyleData(eStyleStruct_Spacing, (const nsStyleStruct*&)spacing);
spacing->GetBorder(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(nsString& aResult) const
{
return MakeFrameName("TableCell", aResult);
}
#endif
// Destructor function for the collapse offset frame property
static void
DestroyPointFunc(nsIPresContext* aPresContext,
nsIFrame* aFrame,
nsIAtom* aPropertyName,
void* aPropertyValue)
{
delete (nsPoint*)aPropertyValue;
}
static nsPoint*
GetCollapseOffsetProperty(nsIPresContext* aPresContext,
nsIFrame* aFrame,
PRBool aCreateIfNecessary = PR_FALSE)
{
nsCOMPtr<nsIPresShell> presShell;
aPresContext->GetShell(getter_AddRefs(presShell));
if (presShell) {
nsCOMPtr<nsIFrameManager> frameManager;
presShell->GetFrameManager(getter_AddRefs(frameManager));
if (frameManager) {
void* value;
frameManager->GetFrameProperty(aFrame, nsLayoutAtoms::collapseOffsetProperty,
0, &value);
if (value) {
return (nsPoint*)value; // the property already exists
} else if (aCreateIfNecessary) {
// The property isn't set yet, so allocate a new point, set the property,
// and return the newly allocated point
nsPoint* offset = new nsPoint(0, 0);
frameManager->SetFrameProperty(aFrame, nsLayoutAtoms::collapseOffsetProperty,
offset, DestroyPointFunc);
return offset;
}
}
}
return nsnull;
}
void nsTableCellFrame::SetCollapseOffsetX(nsIPresContext* aPresContext,
nscoord aXOffset)
{
// Get the frame property (creating a point struct if necessary)
nsPoint* offset = ::GetCollapseOffsetProperty(aPresContext, this, 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 = ::GetCollapseOffsetProperty(aPresContext, this, PR_TRUE);
if (offset) {
offset->y = aYOffset;
}
}
void nsTableCellFrame::GetCollapseOffset(nsIPresContext* aPresContext,
nsPoint& aOffset)
{
// See if the property is set
nsPoint* offset = ::GetCollapseOffsetProperty(aPresContext, this);
if (offset) {
aOffset = *offset;
} else {
aOffset.MoveTo(0, 0);
}
}
#ifdef DEBUG
NS_IMETHODIMP
nsTableCellFrame::SizeOf(nsISizeOfHandler* aHandler, PRUint32* aResult) const
{
if (!aResult) {
return NS_ERROR_NULL_POINTER;
}
PRUint32 sum = sizeof(*this);
*aResult = sum;
return NS_OK;
}
#endif