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;
}
DrawResult
TableBackgroundPainter::PaintRow(nsTableRowFrame* aFrame,
const TableBackgroundData& aRowGroupBGData,
TableBackgroundData aRowBGData,
bool aPassThrough)
{
MOZ_ASSERT(aFrame, "null frame");
/* Load row data */
WritingMode wm = aFrame->GetWritingMode();
if (aPassThrough) {
aRowBGData.MakeInvisible();
} else {
if (mIsBorderCollapse && aRowBGData.ShouldSetBCBorder()) {
LogicalMargin border(wm);
nsTableRowFrame* nextRow = aFrame->GetNextRow();
if (nextRow) { //outer bStart after us is inner bEnd for us
border.BEnd(wm) = nextRow->GetOuterBStartContBCBorderWidth();
}
else { //acquire rg's bEnd border
nsTableRowGroupFrame* rowGroup = static_cast<nsTableRowGroupFrame*>(aFrame->GetParent());
rowGroup->GetContinuousBCBorderWidth(wm, border);
}
//get the rest of the borders; will overwrite all but bEnd
aFrame->GetContinuousBCBorderWidth(wm, border);
aRowBGData.SetBCBorder(border.GetPhysicalMargin(wm));
}
aPassThrough = !aRowBGData.IsVisible();
}
/* Translate */
if (eOrigin_TableRow == mOrigin) {
/* If we originate from the row, then make the row the origin. */
aRowBGData.mRect.MoveTo(0, 0);
}
//else: Use row group's coord system -> no translation necessary
DrawResult result = DrawResult::SUCCESS;
for (nsTableCellFrame* cell = aFrame->GetFirstCell(); cell; cell = cell->GetNextCell()) {
nsRect cellBGRect, rowBGRect, rowGroupBGRect, colBGRect;
ComputeCellBackgrounds(cell, aRowGroupBGData, aRowBGData,
cellBGRect, rowBGRect,
rowGroupBGRect, colBGRect);
// Find the union of all the cell background layers.
nsRect combinedRect(cellBGRect);
combinedRect.UnionRect(combinedRect, rowBGRect);
combinedRect.UnionRect(combinedRect, rowGroupBGRect);
combinedRect.UnionRect(combinedRect, colBGRect);
if (combinedRect.Intersects(mDirtyRect)) {
bool passCell = aPassThrough || cell->IsPseudoStackingContextFromStyle();
DrawResult cellResult =
PaintCell(cell, aRowGroupBGData, aRowBGData,
cellBGRect, rowBGRect, rowGroupBGRect, colBGRect, passCell);
UpdateDrawResult(&result, cellResult);
}
}
return result;
}
DrawResult
TableBackgroundPainter::PaintRowGroup(nsTableRowGroupFrame* aFrame,
TableBackgroundData aRowGroupBGData,
bool aPassThrough)
{
MOZ_ASSERT(aFrame, "null frame");
nsTableRowFrame* firstRow = aFrame->GetFirstRow();
WritingMode wm = aFrame->GetWritingMode();
/* Load row group data */
if (aPassThrough) {
aRowGroupBGData.MakeInvisible();
} else {
if (mIsBorderCollapse && aRowGroupBGData.ShouldSetBCBorder()) {
LogicalMargin border(wm);
if (firstRow) {
//pick up first row's bstart border (= rg bstart border)
firstRow->GetContinuousBCBorderWidth(wm, border);
/* (row group doesn't store its bstart border) */
}
//overwrite sides+bottom borders with rg's own
aFrame->GetContinuousBCBorderWidth(wm, border);
aRowGroupBGData.SetBCBorder(border.GetPhysicalMargin(wm));
}
aPassThrough = !aRowGroupBGData.IsVisible();
}
/* translate everything into row group coord system*/
if (eOrigin_TableRowGroup != mOrigin) {
TranslateContext(aRowGroupBGData.mRect.x, aRowGroupBGData.mRect.y);
}
nsRect rgRect = aRowGroupBGData.mRect;
aRowGroupBGData.mRect.MoveTo(0, 0);
/* Find the right row to start with */
// Note that mDirtyRect - mRenderPt is guaranteed to be in the row
// group's coordinate system here, so passing its .y to
// GetFirstRowContaining is ok.
nscoord overflowAbove;
nsIFrame* cursor = aFrame->GetFirstRowContaining(mDirtyRect.y - mRenderPt.y, &overflowAbove);
// Sadly, it seems like there may be non-row frames in there... or something?
// There are certainly null-checks in GetFirstRow() and GetNextRow(). :(
while (cursor && cursor->GetType() != nsGkAtoms::tableRowFrame) {
cursor = cursor->GetNextSibling();
}
// It's OK if cursor is null here.
nsTableRowFrame* row = static_cast<nsTableRowFrame*>(cursor);
if (!row) {
// No useful cursor; just start at the top. Don't bother to set up a
// cursor; if we've gotten this far then we've already built the display
// list for the rowgroup, so not having a cursor means that there's some
// good reason we don't have a cursor and we shouldn't create one here.
row = firstRow;
}
DrawResult result = DrawResult::SUCCESS;
/* Finally paint */
for (; row; row = row->GetNextRow()) {
TableBackgroundData rowBackgroundData(row);
// Be sure to consider our positions both pre- and post-relative
// positioning, since we potentially need to paint at both places.
nscoord rowY = std::min(rowBackgroundData.mRect.y, row->GetNormalPosition().y);
// Intersect wouldn't handle rowspans.
if (cursor &&
(mDirtyRect.YMost() - mRenderPt.y) <= (rowY - overflowAbove)) {
// All done; cells originating in later rows can't intersect mDirtyRect.
break;
}
DrawResult rowResult =
PaintRow(row, aRowGroupBGData, rowBackgroundData,
aPassThrough || row->IsPseudoStackingContextFromStyle());
UpdateDrawResult(&result, rowResult);
}
/* translate back into table coord system */
if (eOrigin_TableRowGroup != mOrigin) {
TranslateContext(-rgRect.x, -rgRect.y);
}
return result;
}
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;
}