nsresult
TableBackgroundPainter::PaintTableFrame(nsTableFrame* aTableFrame,
nsTableRowGroupFrame* aFirstRowGroup,
nsTableRowGroupFrame* aLastRowGroup,
const nsMargin& aDeflate)
{
NS_PRECONDITION(aTableFrame, "null frame");
TableBackgroundData tableData;
tableData.SetFull(aTableFrame);
tableData.mRect.MoveTo(0,0); //using table's coords
tableData.mRect.Deflate(aDeflate);
if (mIsBorderCollapse && tableData.ShouldSetBCBorder()) {
if (aFirstRowGroup && aLastRowGroup && mNumCols > 0) {
//only handle non-degenerate tables; we need a more robust BC model
//to make degenerate tables' borders reasonable to deal with
nsMargin border, tempBorder;
nsTableColFrame* colFrame = aTableFrame->GetColFrame(mNumCols - 1);
if (colFrame) {
colFrame->GetContinuousBCBorderWidth(tempBorder);
}
border.right = tempBorder.right;
aLastRowGroup->GetContinuousBCBorderWidth(tempBorder);
border.bottom = tempBorder.bottom;
nsTableRowFrame* rowFrame = aFirstRowGroup->GetFirstRow();
if (rowFrame) {
rowFrame->GetContinuousBCBorderWidth(tempBorder);
border.top = tempBorder.top;
}
border.left = aTableFrame->GetContinuousLeftBCBorderWidth();
nsresult rv = tableData.SetBCBorder(border, this);
if (NS_FAILED(rv)) {
tableData.Destroy(mPresContext);
return rv;
}
}
}
if (tableData.IsVisible()) {
nsCSSRendering::PaintBackgroundWithSC(mPresContext, mRenderingContext,
tableData.mFrame, mDirtyRect,
tableData.mRect + mRenderPt,
tableData.mFrame->StyleContext(),
*tableData.mBorder,
mBGPaintFlags);
}
tableData.Destroy(mPresContext);
return NS_OK;
}
TableBackgroundPainter::~TableBackgroundPainter()
{
if (mCols) {
TableBackgroundData* lastColGroup = nullptr;
for (uint32_t i = 0; i < mNumCols; i++) {
if (mCols[i].mColGroup != lastColGroup) {
lastColGroup = mCols[i].mColGroup;
NS_ASSERTION(mCols[i].mColGroup, "colgroup data should not be null - bug 237421");
// we need to wallpaper a over zero pointer deref, bug 237421 will have the real fix
if(lastColGroup)
lastColGroup->Destroy(mPresContext);
delete lastColGroup;
}
mCols[i].mColGroup = nullptr;
mCols[i].mCol.Destroy(mPresContext);
}
delete [] mCols;
}
mRowGroup.Destroy(mPresContext);
mRow.Destroy(mPresContext);
MOZ_COUNT_DTOR(TableBackgroundPainter);
}
nsresult
TableBackgroundPainter::PaintTable(nsTableFrame* aTableFrame,
const nsMargin& aDeflate,
bool aPaintTableBackground)
{
NS_PRECONDITION(aTableFrame, "null table frame");
nsTableFrame::RowGroupArray rowGroups;
aTableFrame->OrderRowGroups(rowGroups);
if (rowGroups.Length() < 1) { //degenerate case
if (aPaintTableBackground) {
PaintTableFrame(aTableFrame, nullptr, nullptr, nsMargin(0,0,0,0));
}
/* No cells; nothing else to paint */
return NS_OK;
}
if (aPaintTableBackground) {
PaintTableFrame(aTableFrame, rowGroups[0], rowGroups[rowGroups.Length() - 1],
aDeflate);
}
/*Set up column background/border data*/
if (mNumCols > 0) {
nsFrameList& colGroupList = aTableFrame->GetColGroups();
NS_ASSERTION(colGroupList.FirstChild(), "table should have at least one colgroup");
mCols = new ColData[mNumCols];
if (!mCols) return NS_ERROR_OUT_OF_MEMORY;
TableBackgroundData* cgData = nullptr;
nsMargin border;
/* BC left borders aren't stored on cols, but the previous column's
right border is the next one's left border.*/
//Start with table's left border.
nscoord lastLeftBorder = aTableFrame->GetContinuousLeftBCBorderWidth();
for (nsTableColGroupFrame* cgFrame = static_cast<nsTableColGroupFrame*>(colGroupList.FirstChild());
cgFrame; cgFrame = static_cast<nsTableColGroupFrame*>(cgFrame->GetNextSibling())) {
if (cgFrame->GetColCount() < 1) {
//No columns, no cells, so no need for data
continue;
}
/*Create data struct for column group*/
cgData = new TableBackgroundData;
if (!cgData) return NS_ERROR_OUT_OF_MEMORY;
cgData->SetFull(cgFrame);
if (mIsBorderCollapse && cgData->ShouldSetBCBorder()) {
border.left = lastLeftBorder;
cgFrame->GetContinuousBCBorderWidth(border);
nsresult rv = cgData->SetBCBorder(border, this);
if (NS_FAILED(rv)) {
cgData->Destroy(mPresContext);
delete cgData;
return rv;
}
}
// Boolean that indicates whether mCols took ownership of cgData
bool cgDataOwnershipTaken = false;
/*Loop over columns in this colgroup*/
for (nsTableColFrame* col = cgFrame->GetFirstColumn(); col;
col = static_cast<nsTableColFrame*>(col->GetNextSibling())) {
/*Create data struct for column*/
uint32_t colIndex = col->GetColIndex();
NS_ASSERTION(colIndex < mNumCols, "prevent array boundary violation");
if (mNumCols <= colIndex)
break;
mCols[colIndex].mCol.SetFull(col);
//Bring column mRect into table's coord system
mCols[colIndex].mCol.mRect.MoveBy(cgData->mRect.x, cgData->mRect.y);
//link to parent colgroup's data
mCols[colIndex].mColGroup = cgData;
cgDataOwnershipTaken = true;
if (mIsBorderCollapse) {
border.left = lastLeftBorder;
lastLeftBorder = col->GetContinuousBCBorderWidth(border);
if (mCols[colIndex].mCol.ShouldSetBCBorder()) {
nsresult rv = mCols[colIndex].mCol.SetBCBorder(border, this);
if (NS_FAILED(rv)) return rv;
}
}
}
if (!cgDataOwnershipTaken) {
cgData->Destroy(mPresContext);
delete cgData;
}
}
}
for (uint32_t i = 0; i < rowGroups.Length(); i++) {
nsTableRowGroupFrame* rg = rowGroups[i];
mRowGroup.SetFrame(rg);
// Need to compute the right rect via GetOffsetTo, since the row
// group may not be a child of the table.
mRowGroup.mRect.MoveTo(rg->GetOffsetTo(aTableFrame));
if (mRowGroup.mRect.Intersects(mDirtyRect - mRenderPt)) {
nsresult rv = PaintRowGroup(rg, rg->IsPseudoStackingContextFromStyle());
if (NS_FAILED(rv)) return rv;
}
}
return NS_OK;
}