void AccessibilityTableCell::rowIndexRange(std::pair<unsigned, unsigned>& rowRange)
{
if (!m_renderer || !m_renderer->isTableCell())
return;
RenderTableCell* renderCell = toRenderTableCell(m_renderer);
rowRange.first = renderCell->rowIndex();
rowRange.second = renderCell->rowSpan();
// since our table might have multiple sections, we have to offset our row appropriately
RenderTableSection* section = renderCell->section();
RenderTable* table = renderCell->table();
if (!table || !section)
return;
RenderTableSection* tableSection = table->topSection();
unsigned rowOffset = 0;
while (tableSection) {
if (tableSection == section)
break;
rowOffset += tableSection->numRows();
tableSection = table->sectionBelow(tableSection, SkipEmptySections);
}
rowRange.first += rowOffset;
}
void AccessibilityTableCell::rowIndexRange(pair<int, int>& rowRange)
{
if (!m_renderer || !m_renderer->isTableCell())
return;
RenderTableCell* renderCell = toRenderTableCell(m_renderer);
rowRange.first = renderCell->rowIndex();
rowRange.second = renderCell->rowSpan();
// since our table might have multiple sections, we have to offset our row appropriately
RenderTableSection* section = renderCell->section();
RenderTable* table = renderCell->table();
if (!table || !section)
return;
// FIXME: This will skip a table with just a tfoot. Should fix by using RenderTable::topSection.
RenderTableSection* tableSection = table->header();
if (!tableSection)
tableSection = table->firstBody();
unsigned rowOffset = 0;
while (tableSection) {
if (tableSection == section)
break;
rowOffset += tableSection->numRows();
tableSection = table->sectionBelow(tableSection, SkipEmptySections);
}
rowRange.first += rowOffset;
}
void AccessibilityTableCell::rowIndexRange(std::pair<unsigned, unsigned>& rowRange)
{
if (!m_renderer || !m_renderer->isTableCell())
return;
RenderTableCell* renderCell = toRenderTableCell(m_renderer);
rowRange.first = renderCell->rowIndex();
rowRange.second = renderCell->rowSpan();
// since our table might have multiple sections, we have to offset our row appropriately
RenderTableSection* section = renderCell->section();
RenderTable* table = renderCell->table();
if (!table || !section)
return;
RenderTableSection* footerSection = table->footer();
unsigned rowOffset = 0;
for (RenderTableSection* tableSection = table->topSection(); tableSection; tableSection = table->sectionBelow(tableSection, SkipEmptySections)) {
// Don't add row offsets for bottom sections that are placed in before the body section.
if (tableSection == footerSection)
continue;
if (tableSection == section)
break;
rowOffset += tableSection->numRows();
}
rowRange.first += rowOffset;
}
void RenderTableCol::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
{
RenderBox::styleDidChange(diff, oldStyle);
// If border was changed, notify table.
if (parent()) {
RenderTable* table = this->table();
if (table && !table->selfNeedsLayout() && !table->normalChildNeedsLayout() && oldStyle && oldStyle->border() != style().border())
table->invalidateCollapsedBorders();
else if (oldStyle->width() != style().width()) {
for (auto& section : childrenOfType<RenderTableSection>(*table)) {
unsigned nEffCols = table->numEffCols();
for (unsigned j = 0; j < nEffCols; j++) {
unsigned rowCount = section.numRows();
for (unsigned i = 0; i < rowCount; i++) {
RenderTableCell* cell = section.primaryCellAt(i, j);
if (!cell)
continue;
cell->setPreferredLogicalWidthsDirty(true);
}
}
}
}
}
}
void AccessibilityTableCell::rowIndexRange(pair<int, int>& rowRange)
{
if (!m_renderer)
return;
RenderTableCell* renderCell = static_cast<RenderTableCell*>(m_renderer);
rowRange.first = renderCell->row();
rowRange.second = renderCell->rowSpan();
// since our table might have multiple sections, we have to offset our row appropriately
RenderTableSection* section = renderCell->section();
RenderTable* table = renderCell->table();
if (!table || !section)
return;
RenderTableSection* tableSection = table->header();
if (!tableSection)
tableSection = table->firstBody();
unsigned rowOffset = 0;
while (tableSection) {
if (tableSection == section)
break;
rowOffset += tableSection->numRows();
tableSection = table->sectionBelow(tableSection, true);
}
rowRange.first += rowOffset;
}
void TableCellPainter::paintBoxDecorationBackground(const PaintInfo& paintInfo, const LayoutPoint& paintOffset)
{
if (!paintInfo.shouldPaintWithinRoot(&m_renderTableCell))
return;
RenderTable* tableElt = m_renderTableCell.table();
if (!tableElt->collapseBorders() && m_renderTableCell.style()->emptyCells() == HIDE && !m_renderTableCell.firstChild())
return;
LayoutRect paintRect = paintBounds(paintOffset, DoNotAddOffsetFromParent);
RenderDrawingRecorder recorder(paintInfo.context, m_renderTableCell, paintInfo.phase, pixelSnappedIntRect(paintRect));
if (recorder.canUseCachedDrawing())
return;
BoxPainter::paintBoxShadow(paintInfo, paintRect, m_renderTableCell.style(), Normal);
// Paint our cell background.
paintBackgroundsBehindCell(paintInfo, paintOffset, &m_renderTableCell);
BoxPainter::paintBoxShadow(paintInfo, paintRect, m_renderTableCell.style(), Inset);
if (!m_renderTableCell.style()->hasBorder() || tableElt->collapseBorders())
return;
BoxPainter::paintBorder(m_renderTableCell, paintInfo, paintRect, m_renderTableCell.style());
}
void TableCellPainter::paintBackgroundsBehindCell(const PaintInfo& paintInfo, const LayoutPoint& paintOffset, RenderObject* backgroundObject)
{
if (!paintInfo.shouldPaintWithinRoot(&m_renderTableCell))
return;
if (!backgroundObject)
return;
if (m_renderTableCell.style()->visibility() != VISIBLE)
return;
RenderTable* tableElt = m_renderTableCell.table();
if (!tableElt->collapseBorders() && m_renderTableCell.style()->emptyCells() == HIDE && !m_renderTableCell.firstChild())
return;
Color c = backgroundObject->resolveColor(CSSPropertyBackgroundColor);
const FillLayer& bgLayer = backgroundObject->style()->backgroundLayers();
LayoutRect paintRect = paintBounds(paintOffset, backgroundObject != &m_renderTableCell ? AddOffsetFromParent : DoNotAddOffsetFromParent);
if (bgLayer.hasImage() || c.alpha()) {
// We have to clip here because the background would paint
// on top of the borders otherwise. This only matters for cells and rows.
bool shouldClip = backgroundObject->hasLayer() && (backgroundObject == &m_renderTableCell || backgroundObject == m_renderTableCell.parent()) && tableElt->collapseBorders();
GraphicsContextStateSaver stateSaver(*paintInfo.context, shouldClip);
if (shouldClip) {
LayoutRect clipRect(paintRect.location(), m_renderTableCell.size());
clipRect.expand(m_renderTableCell.borderInsets());
paintInfo.context->clip(clipRect);
}
BoxPainter(m_renderTableCell).paintFillLayers(paintInfo, c, bgLayer, paintRect, BackgroundBleedNone, CompositeSourceOver, backgroundObject);
}
}
void RenderTableCell::paintBoxDecorations(PaintInfo& paintInfo, int tx, int ty)
{
#if PLATFORM(WKC)
CRASH_IF_STACK_OVERFLOW(WKC_STACK_MARGIN_DEFAULT);
#endif
RenderTable* tableElt = table();
if (!tableElt->collapseBorders() && style()->emptyCells() == HIDE && !firstChild())
return;
int w = width();
int h = height();
if (style()->boxShadow())
paintBoxShadow(paintInfo.context, tx, ty, w, h, style(), Normal);
// Paint our cell background.
paintBackgroundsBehindCell(paintInfo, tx, ty, this);
if (style()->boxShadow())
paintBoxShadow(paintInfo.context, tx, ty, w, h, style(), Inset);
if (!style()->hasBorder() || tableElt->collapseBorders())
return;
paintBorder(paintInfo.context, tx, ty, w, h, style());
}
void RenderTableRow::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
{
ASSERT(style()->display() == TABLE_ROW);
RenderBox::styleDidChange(diff, oldStyle);
propagateStyleToAnonymousChildren();
if (section() && oldStyle && style()->logicalHeight() != oldStyle->logicalHeight())
section()->rowLogicalHeightChanged(rowIndex());
// If border was changed, notify table.
if (parent()) {
RenderTable* table = this->table();
if (table && !table->selfNeedsLayout() && !table->normalChildNeedsLayout() && oldStyle && oldStyle->border() != style()->border())
table->invalidateCollapsedBorders();
if (table && oldStyle && diff == StyleDifferenceLayout && needsLayout() && table->collapseBorders() && borderWidthChanged(oldStyle, style())) {
// If the border width changes on a row, we need to make sure the cells in the row know to lay out again.
// This only happens when borders are collapsed, since they end up affecting the border sides of the cell
// itself.
for (RenderBox* childBox = firstChildBox(); childBox; childBox = childBox->nextSiblingBox()) {
if (!childBox->isTableCell())
continue;
childBox->setChildNeedsLayout(true, MarkOnlyThis);
}
}
}
}
IntRect RenderTableRow::getAbsoluteRepaintRect()
{
// For now, just repaint the whole table.
// FIXME: Find a better way to do this, e.g., need to repaint all the cells that we
// might have propagated a background color into.
RenderTable* parentTable = table();
if (parentTable)
return parentTable->getAbsoluteRepaintRect();
else
return IntRect();
}
void RenderTableCol::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
{
RenderBox::styleDidChange(diff, oldStyle);
// If border was changed, notify table.
if (parent()) {
RenderTable* table = this->table();
if (table && !table->selfNeedsLayout() && !table->normalChildNeedsLayout() && oldStyle && oldStyle->border() != style()->border())
table->invalidateCollapsedBorders();
}
}
void RenderTableCell::paintMask(PaintInfo& paintInfo, IntSize paintOffset)
{
if (style()->visibility() != VISIBLE || paintInfo.phase != PaintPhaseMask)
return;
RenderTable* tableElt = table();
if (!tableElt->collapseBorders() && style()->emptyCells() == HIDE && !firstChild())
return;
paintMaskImages(paintInfo, IntRect(toPoint(paintOffset), size()));
}
void TableCellPainter::paintMask(const PaintInfo& paintInfo, const LayoutPoint& paintOffset)
{
if (m_renderTableCell.style()->visibility() != VISIBLE || paintInfo.phase != PaintPhaseMask)
return;
RenderTable* tableElt = m_renderTableCell.table();
if (!tableElt->collapseBorders() && m_renderTableCell.style()->emptyCells() == HIDE && !m_renderTableCell.firstChild())
return;
BoxPainter(m_renderTableCell).paintMaskImages(paintInfo, paintBounds(paintOffset, DoNotAddOffsetFromParent));
}
LayoutRect RenderTableCol::clippedOverflowRectForRepaint(const RenderLayerModelObject* repaintContainer) const
{
// For now, just repaint the whole table.
// FIXME: Find a better way to do this, e.g., need to repaint all the cells that we
// might have propagated a background color or borders into.
// FIXME: check for repaintContainer each time here?
RenderTable* parentTable = table();
if (!parentTable)
return LayoutRect();
return parentTable->clippedOverflowRectForRepaint(repaintContainer);
}
static bool shouldEmitTabBeforeNode(Node* node)
{
RenderObject* r = node->renderer();
// Table cells are delimited by tabs.
if (!r || !isTableCell(node))
return false;
// Want a tab before every cell other than the first one
RenderTableCell* rc = static_cast<RenderTableCell*>(r);
RenderTable* t = rc->table();
return t && (t->cellBefore(rc) || t->cellAbove(rc));
}
void RenderTableCell::readyWRATHWidgetBackgroundsBehindCell(PaintedWidgetsOfWRATHHandle& handle,
PaintInfoOfWRATH& paintInfo, int tx, int ty,
RenderObject* backgroundObject)
{
RenderTableCell_ReadyWRATHWidgetBackgroundsBehindCell *d(RenderTableCell_ReadyWRATHWidgetBackgroundsBehindCell::object(this, handle));
ContextOfWRATH::AutoPushNode autoPushRoot(paintInfo.wrath_context, d->m_root_node);
d->m_fill_layers.visible(false);
if (!paintInfo.shouldPaintWithinRoot(this))
return;
if (!backgroundObject)
return;
if (style()->visibility() != VISIBLE)
return;
RenderTable* tableElt = table();
if (!tableElt->collapseBorders() && style()->emptyCells() == HIDE && !firstChild())
return;
if (backgroundObject != this) {
tx += x();
ty += y();
}
int w = width();
int h = height();
Color c = backgroundObject->style()->visitedDependentColor(CSSPropertyBackgroundColor);
const FillLayer* bgLayer = backgroundObject->style()->backgroundLayers();
if (bgLayer->hasImage() || c.isValid()) {
// We have to clip here because the background would paint
// on top of the borders otherwise. This only matters for cells and rows.
bool shouldClip = backgroundObject->hasLayer() && (backgroundObject == this || backgroundObject == parent()) && tableElt->collapseBorders();
ContextOfWRATH::AutoPushNode autoPushClip(paintInfo.wrath_context, d->m_clip_node);
d->m_clip_node.widget()->node()->clipping_active(false);
if (shouldClip) {
IntRect clipRect(tx + borderLeft(), ty + borderTop(),
w - borderLeft() - borderRight(), h - borderTop() - borderBottom());
ContextOfWRATH::set_clipping(d->m_clip_node, clipRect);
d->m_clip_node.widget()->node()->clipping_active(true);
}
readyWRATHWidgetFillLayers(d->m_fill_layers, paintInfo, c, bgLayer, tx, ty, w, h, BackgroundBleedNone, CompositeSourceOver, backgroundObject);
d->m_fill_layers.visible(true);
}
}
void RenderContainer::addChild(RenderObject* newChild, RenderObject* beforeChild)
{
bool needsTable = false;
if (newChild->isListItem())
updateListMarkerNumbers(beforeChild ? beforeChild : m_lastChild);
else if (newChild->isTableCol() && newChild->style()->display() == TABLE_COLUMN_GROUP)
needsTable = !isTable();
else if (newChild->isRenderBlock() && newChild->style()->display() == TABLE_CAPTION)
needsTable = !isTable();
else if (newChild->isTableSection())
needsTable = !isTable();
else if (newChild->isTableRow())
needsTable = !isTableSection();
else if (newChild->isTableCell()) {
needsTable = !isTableRow();
// I'm not 100% sure this is the best way to fix this, but without this
// change we recurse infinitely when trying to render the CSS2 test page:
// http://www.bath.ac.uk/%7Epy8ieh/internet/eviltests/htmlbodyheadrendering2.html.
// See Radar 2925291.
if (needsTable && isTableCell() && !m_firstChild && !newChild->isTableCell())
needsTable = false;
}
if (needsTable) {
RenderTable* table;
RenderObject* afterChild = beforeChild ? beforeChild->previousSibling() : m_lastChild;
if (afterChild && afterChild->isAnonymous() && afterChild->isTable())
table = static_cast<RenderTable*>(afterChild);
else {
table = new (renderArena()) RenderTable(document() /* is anonymous */);
RefPtr<RenderStyle> newStyle = RenderStyle::create();
newStyle->inheritFrom(style());
newStyle->setDisplay(TABLE);
table->setStyle(newStyle.release());
addChild(table, beforeChild);
}
table->addChild(newChild);
} else {
// just add it...
insertChildNode(newChild, beforeChild);
}
if (newChild->isText() && newChild->style()->textTransform() == CAPITALIZE) {
RefPtr<StringImpl> textToTransform = static_cast<RenderText*>(newChild)->originalText();
if (textToTransform)
static_cast<RenderText*>(newChild)->setText(textToTransform.release(), true);
}
}
void RenderTableRow::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
{
RenderBox::styleDidChange(diff, oldStyle);
propagateStyleToAnonymousChildren();
if (parent())
updateBeforeAndAfterContent();
// If border was changed, notify table.
if (parent()) {
RenderTable* table = this->table();
if (table && !table->selfNeedsLayout() && !table->normalChildNeedsLayout() && oldStyle && oldStyle->border() != style()->border())
table->invalidateCollapsedBorders();
}
}
void RenderTableCell::paintMask(PaintInfo& paintInfo, int tx, int ty)
{
#if PLATFORM(WKC)
CRASH_IF_STACK_OVERFLOW(WKC_STACK_MARGIN_DEFAULT);
#endif
if (style()->visibility() != VISIBLE || paintInfo.phase != PaintPhaseMask)
return;
RenderTable* tableElt = table();
if (!tableElt->collapseBorders() && style()->emptyCells() == HIDE && !firstChild())
return;
int w = width();
int h = height();
paintMaskImages(paintInfo, tx, ty, w, h);
}
void AccessibilityTable::addChildren()
{
if (!isAccessibilityTable()) {
AccessibilityRenderObject::addChildren();
return;
}
ASSERT(!m_haveChildren);
m_haveChildren = true;
if (!m_renderer || !m_renderer->isTable())
return;
RenderTable* table = toRenderTable(m_renderer);
// Go through all the available sections to pull out the rows and add them as children.
table->recalcSectionsIfNeeded();
unsigned maxColumnCount = 0;
RenderTableSection* footer = table->footer();
for (RenderTableSection* tableSection = table->topSection(); tableSection; tableSection = table->sectionBelow(tableSection, SkipEmptySections)) {
if (tableSection == footer)
continue;
addChildrenFromSection(tableSection, maxColumnCount);
}
// Process the footer last, in case it was ordered earlier in the DOM.
if (footer)
addChildrenFromSection(footer, maxColumnCount);
AXObjectCache* axCache = m_renderer->document().axObjectCache();
// make the columns based on the number of columns in the first body
unsigned length = maxColumnCount;
for (unsigned i = 0; i < length; ++i) {
AccessibilityTableColumn* column = toAccessibilityTableColumn(axCache->getOrCreate(ColumnRole));
column->setColumnIndex((int)i);
column->setParent(this);
m_columns.append(column);
if (!column->accessibilityIsIgnored())
m_children.append(column);
}
AccessibilityObject* headerContainerObject = headerContainer();
if (headerContainerObject && !headerContainerObject->accessibilityIsIgnored())
m_children.append(headerContainerObject);
}
void RenderTableRow::styleDidChange(StyleDifference diff, const RenderStyle* oldStyle)
{
ASSERT(style()->display() == TABLE_ROW);
RenderBox::styleDidChange(diff, oldStyle);
propagateStyleToAnonymousChildren();
if (section() && oldStyle && style()->logicalHeight() != oldStyle->logicalHeight())
section()->rowLogicalHeightChanged(rowIndex());
// If border was changed, notify table.
if (parent()) {
RenderTable* table = this->table();
if (table && !table->selfNeedsLayout() && !table->normalChildNeedsLayout() && oldStyle && oldStyle->border() != style()->border())
table->invalidateCollapsedBorders();
}
}
void Control::parsePanoramaControl(ZVision *engine, Common::SeekableReadStream &stream) {
RenderTable *renderTable = engine->getRenderManager()->getRenderTable();
renderTable->setRenderState(RenderTable::PANORAMA);
// Loop until we find the closing brace
Common::String line = stream.readLine();
trimCommentsAndWhiteSpace(&line);
while (!stream.eos() && !line.contains('}')) {
if (line.matchString("angle*", true)) {
float fov;
sscanf(line.c_str(), "angle(%f)", &fov);
renderTable->setPanoramaFoV(fov);
} else if (line.matchString("linscale*", true)) {
float scale;
sscanf(line.c_str(), "linscale(%f)", &scale);
renderTable->setPanoramaScale(scale);
} else if (line.matchString("reversepana*", true)) {
uint reverse;
sscanf(line.c_str(), "reversepana(%u)", &reverse);
if (reverse == 1) {
renderTable->setPanoramaReverse(true);
}
} else if (line.matchString("zeropoint*", true)) {
uint point;
sscanf(line.c_str(), "zeropoint(%u)", &point);
renderTable->setPanoramaZeroPoint(point);
}
line = stream.readLine();
trimCommentsAndWhiteSpace(&line);
}
renderTable->generateRenderTable();
}
AccessibilityObject* AccessibilityTableColumn::headerObject()
{
if (!m_parent)
return 0;
RenderObject* renderer = m_parent->renderer();
if (!renderer)
return 0;
if (!m_parent->isAccessibilityTable())
return 0;
AccessibilityTable* parentTable = toAccessibilityTable(m_parent);
if (parentTable->isAriaTable()) {
AccessibilityChildrenVector rowChildren = children();
unsigned childrenCount = rowChildren.size();
for (unsigned i = 0; i < childrenCount; ++i) {
AccessibilityObject* cell = rowChildren[i].get();
if (cell->ariaRoleAttribute() == ColumnHeaderRole)
return cell;
}
return 0;
}
if (!renderer->isTable())
return 0;
RenderTable* table = toRenderTable(renderer);
AccessibilityObject* headerObject = 0;
// try the <thead> section first. this doesn't require th tags
headerObject = headerObjectForSection(table->header(), false);
if (headerObject)
return headerObject;
// now try for <th> tags in the first body
headerObject = headerObjectForSection(table->firstBody(), true);
return headerObject;
}
static bool shouldEmitNewlinesBeforeAndAfterNode(Node* node)
{
// Block flow (versus inline flow) is represented by having
// a newline both before and after the element.
RenderObject* r = node->renderer();
if (!r) {
return (node->hasTagName(blockquoteTag)
|| node->hasTagName(ddTag)
|| node->hasTagName(divTag)
|| node->hasTagName(dlTag)
|| node->hasTagName(dtTag)
|| node->hasTagName(h1Tag)
|| node->hasTagName(h2Tag)
|| node->hasTagName(h3Tag)
|| node->hasTagName(h4Tag)
|| node->hasTagName(h5Tag)
|| node->hasTagName(h6Tag)
|| node->hasTagName(hrTag)
|| node->hasTagName(liTag)
|| node->hasTagName(listingTag)
|| node->hasTagName(olTag)
|| node->hasTagName(pTag)
|| node->hasTagName(preTag)
|| node->hasTagName(trTag)
|| node->hasTagName(ulTag));
}
// Need to make an exception for table cells, because they are blocks, but we
// want them tab-delimited rather than having newlines before and after.
if (isTableCell(node))
return false;
// Need to make an exception for table row elements, because they are neither
// "inline" or "RenderBlock", but we want newlines for them.
if (r->isTableRow()) {
RenderTable* t = static_cast<RenderTableRow*>(r)->table();
if (t && !t->isInline())
return true;
}
return !r->isInline() && r->isRenderBlock() && !r->isFloatingOrPositioned() && !r->isBody();
}
void RenderTableCell::paintBackgroundsBehindCell(PaintInfo& paintInfo, int tx, int ty, RenderObject* backgroundObject)
{
#if PLATFORM(WKC)
CRASH_IF_STACK_OVERFLOW(WKC_STACK_MARGIN_DEFAULT);
#endif
if (!backgroundObject)
return;
if (style()->visibility() != VISIBLE)
return;
RenderTable* tableElt = table();
if (!tableElt->collapseBorders() && style()->emptyCells() == HIDE && !firstChild())
return;
if (backgroundObject != this) {
tx += x();
ty += y();
}
int w = width();
int h = height();
Color c = backgroundObject->style()->backgroundColor();
const FillLayer* bgLayer = backgroundObject->style()->backgroundLayers();
if (bgLayer->hasImage() || c.isValid()) {
// We have to clip here because the background would paint
// on top of the borders otherwise. This only matters for cells and rows.
bool shouldClip = backgroundObject->hasLayer() && (backgroundObject == this || backgroundObject == parent()) && tableElt->collapseBorders();
if (shouldClip) {
IntRect clipRect(tx + borderLeft(), ty + borderTop(),
w - borderLeft() - borderRight(), h - borderTop() - borderBottom());
paintInfo.context->save();
paintInfo.context->clip(clipRect);
}
paintFillLayers(paintInfo, c, bgLayer, tx, ty, w, h);
if (shouldClip)
paintInfo.context->restore();
}
}
HTMLTableElement* AccessibilityTable::tableElement() const
{
if (!m_renderer->isTable())
return nullptr;
RenderTable* table = toRenderTable(m_renderer);
if (table->element() && isHTMLTableElement(table->element()))
return toHTMLTableElement(table->element());
// If the table has a display:table-row-group, then the RenderTable does not have a pointer to it's HTMLTableElement.
// We can instead find it by asking the firstSection for its parent.
RenderTableSection* firstBody = table->firstBody();
if (!firstBody || !firstBody->element())
return nullptr;
Element* actualTable = firstBody->element()->parentElement();
if (!actualTable || !isHTMLTableElement(actualTable))
return nullptr;
return toHTMLTableElement(actualTable);
}
void RenderTableCell::paintBackgroundsBehindCell(PaintInfo& paintInfo, int tx, int ty, RenderObject* backgroundObject)
{
if (!paintInfo.shouldPaintWithinRoot(this))
return;
if (!backgroundObject)
return;
if (style()->visibility() != VISIBLE)
return;
RenderTable* tableElt = table();
if (!tableElt->collapseBorders() && style()->emptyCells() == HIDE && !firstChild())
return;
if (backgroundObject != this) {
tx += x();
ty += y();
}
int w = width();
int h = height();
Color c = backgroundObject->style()->visitedDependentColor(CSSPropertyBackgroundColor);
const FillLayer* bgLayer = backgroundObject->style()->backgroundLayers();
if (bgLayer->hasImage() || c.isValid()) {
// We have to clip here because the background would paint
// on top of the borders otherwise. This only matters for cells and rows.
bool shouldClip = backgroundObject->hasLayer() && (backgroundObject == this || backgroundObject == parent()) && tableElt->collapseBorders();
GraphicsContextStateSaver stateSaver(*paintInfo.context, shouldClip);
if (shouldClip) {
IntRect clipRect(tx + borderLeft(), ty + borderTop(),
w - borderLeft() - borderRight(), h - borderTop() - borderBottom());
paintInfo.context->clip(clipRect);
}
paintFillLayers(paintInfo, c, bgLayer, IntRect(tx, ty, w, h), BackgroundBleedNone, CompositeSourceOver, backgroundObject);
}
}
void RenderTableCell::paintBoxDecorations(PaintInfo& paintInfo, int tx, int ty)
{
if (!paintInfo.shouldPaintWithinRoot(this))
return;
RenderTable* tableElt = table();
if (!tableElt->collapseBorders() && style()->emptyCells() == HIDE && !firstChild())
return;
IntRect paintRect = IntRect(IntPoint(tx, ty), size());
paintBoxShadow(paintInfo, paintRect, style(), Normal);
// Paint our cell background.
paintBackgroundsBehindCell(paintInfo, tx, ty, this);
paintBoxShadow(paintInfo, paintRect, style(), Inset);
if (!style()->hasBorder() || tableElt->collapseBorders())
return;
paintBorder(paintInfo, paintRect, style());
}
void RenderTableCell::readyWRATHWidgetBoxDecorations(PaintedWidgetsOfWRATHHandle& handle,
PaintInfoOfWRATH& paintInfo, int tx, int ty)
{
RenderTableCell_ReadyWRATHWidgetBoxDecorations *d(RenderTableCell_ReadyWRATHWidgetBoxDecorations::object(this, handle));
ContextOfWRATH::AutoPushNode autoPushRoot(paintInfo.wrath_context, d->m_root_node);
d->m_box_shadow.visible(false);
d->m_backgrounds.visible(false);
d->m_latter_box_shadow.visible(false);
d->m_border.visible(false);
if (!paintInfo.shouldPaintWithinRoot(this))
return;
RenderTable* tableElt = table();
if (!tableElt->collapseBorders() && style()->emptyCells() == HIDE && !firstChild())
return;
int w = width();
int h = height();
readyWRATHWidgetBoxShadow(d->m_box_shadow, paintInfo.wrath_context, tx, ty, w, h, style(), Normal);
d->m_box_shadow.visible(true);
// Paint our cell background.
readyWRATHWidgetBackgroundsBehindCell(d->m_backgrounds, paintInfo, tx, ty, this);
d->m_backgrounds.visible(true);
readyWRATHWidgetBoxShadow(d->m_latter_box_shadow, paintInfo.wrath_context, tx, ty, w, h, style(), Inset);
d->m_latter_box_shadow.visible(true);
if (!style()->hasBorder() || tableElt->collapseBorders())
return;
readyWRATHWidgetBorder(d->m_border, paintInfo.wrath_context, tx, ty, w, h, style());
d->m_border.visible(true);
}
bool AccessibilityTable::isDataTable() const
{
if (!m_renderer)
return false;
// Do not consider it a data table is it has an ARIA role.
if (hasARIARole())
return false;
// When a section of the document is contentEditable, all tables should be
// treated as data tables, otherwise users may not be able to work with rich
// text editors that allow creating and editing tables.
if (node() && node()->hasEditableStyle())
return true;
// This employs a heuristic to determine if this table should appear.
// Only "data" tables should be exposed as tables.
// Unfortunately, there is no good way to determine the difference
// between a "layout" table and a "data" table.
RenderTable* table = toRenderTable(m_renderer);
if (!table->element() || !isHTMLTableElement(table->element()))
return false;
// if there is a caption element, summary, THEAD, or TFOOT section, it's most certainly a data table
HTMLTableElement* tableElement = toHTMLTableElement(table->element());
if (!tableElement->summary().isEmpty() || tableElement->tHead() || tableElement->tFoot() || tableElement->caption())
return true;
// if someone used "rules" attribute than the table should appear
if (!tableElement->rules().isEmpty())
return true;
// if there's a colgroup or col element, it's probably a data table.
for (const auto& child : childrenOfType<Element>(*tableElement)) {
if (child.hasTagName(colTag) || child.hasTagName(colgroupTag))
return true;
}
// go through the cell's and check for tell-tale signs of "data" table status
// cells have borders, or use attributes like headers, abbr, scope or axis
table->recalcSectionsIfNeeded();
RenderTableSection* firstBody = table->firstBody();
if (!firstBody)
return false;
int numCols = firstBody->numColumns();
int numRows = firstBody->numRows();
// If there's only one cell, it's not a good AXTable candidate.
if (numRows == 1 && numCols == 1)
return false;
// If there are at least 20 rows, we'll call it a data table.
if (numRows >= 20)
return true;
// Store the background color of the table to check against cell's background colors.
const RenderStyle& tableStyle = table->style();
Color tableBGColor = tableStyle.visitedDependentColor(CSSPropertyBackgroundColor);
// check enough of the cells to find if the table matches our criteria
// Criteria:
// 1) must have at least one valid cell (and)
// 2) at least half of cells have borders (or)
// 3) at least half of cells have different bg colors than the table, and there is cell spacing
unsigned validCellCount = 0;
unsigned borderedCellCount = 0;
unsigned backgroundDifferenceCellCount = 0;
unsigned cellsWithTopBorder = 0;
unsigned cellsWithBottomBorder = 0;
unsigned cellsWithLeftBorder = 0;
unsigned cellsWithRightBorder = 0;
Color alternatingRowColors[5];
int alternatingRowColorCount = 0;
int headersInFirstColumnCount = 0;
for (int row = 0; row < numRows; ++row) {
int headersInFirstRowCount = 0;
for (int col = 0; col < numCols; ++col) {
RenderTableCell* cell = firstBody->primaryCellAt(row, col);
if (!cell)
continue;
Element* cellElement = cell->element();
if (!cellElement)
continue;
if (cell->width() < 1 || cell->height() < 1)
continue;
validCellCount++;
bool isTHCell = cellElement->hasTagName(thTag);
// If the first row is comprised of all <th> tags, assume it is a data table.
if (!row && isTHCell)
headersInFirstRowCount++;
// If the first column is comprised of all <th> tags, assume it is a data table.
if (!col && isTHCell)
headersInFirstColumnCount++;
// In this case, the developer explicitly assigned a "data" table attribute.
if (cellElement->hasTagName(tdTag) || cellElement->hasTagName(thTag)) {
HTMLTableCellElement* tableCellElement = toHTMLTableCellElement(cellElement);
if (!tableCellElement->headers().isEmpty() || !tableCellElement->abbr().isEmpty()
|| !tableCellElement->axis().isEmpty() || !tableCellElement->scope().isEmpty())
return true;
}
const RenderStyle& renderStyle = cell->style();
// If the empty-cells style is set, we'll call it a data table.
if (renderStyle.emptyCells() == HIDE)
return true;
// If a cell has matching bordered sides, call it a (fully) bordered cell.
if ((cell->borderTop() > 0 && cell->borderBottom() > 0)
|| (cell->borderLeft() > 0 && cell->borderRight() > 0))
borderedCellCount++;
// Also keep track of each individual border, so we can catch tables where most
// cells have a bottom border, for example.
if (cell->borderTop() > 0)
cellsWithTopBorder++;
if (cell->borderBottom() > 0)
cellsWithBottomBorder++;
if (cell->borderLeft() > 0)
cellsWithLeftBorder++;
if (cell->borderRight() > 0)
cellsWithRightBorder++;
// If the cell has a different color from the table and there is cell spacing,
// then it is probably a data table cell (spacing and colors take the place of borders).
Color cellColor = renderStyle.visitedDependentColor(CSSPropertyBackgroundColor);
if (table->hBorderSpacing() > 0 && table->vBorderSpacing() > 0
&& tableBGColor != cellColor && cellColor.alpha() != 1)
backgroundDifferenceCellCount++;
// If we've found 10 "good" cells, we don't need to keep searching.
if (borderedCellCount >= 10 || backgroundDifferenceCellCount >= 10)
return true;
// For the first 5 rows, cache the background color so we can check if this table has zebra-striped rows.
if (row < 5 && row == alternatingRowColorCount) {
RenderObject* renderRow = cell->parent();
if (!renderRow || !renderRow->isBoxModelObject() || !toRenderBoxModelObject(renderRow)->isTableRow())
continue;
const RenderStyle& rowRenderStyle = renderRow->style();
Color rowColor = rowRenderStyle.visitedDependentColor(CSSPropertyBackgroundColor);
alternatingRowColors[alternatingRowColorCount] = rowColor;
alternatingRowColorCount++;
}
}
if (!row && headersInFirstRowCount == numCols && numCols > 1)
return true;
}
if (headersInFirstColumnCount == numRows && numRows > 1)
return true;
// if there is less than two valid cells, it's not a data table
if (validCellCount <= 1)
return false;
// half of the cells had borders, it's a data table
unsigned neededCellCount = validCellCount / 2;
if (borderedCellCount >= neededCellCount
|| cellsWithTopBorder >= neededCellCount
|| cellsWithBottomBorder >= neededCellCount
|| cellsWithLeftBorder >= neededCellCount
|| cellsWithRightBorder >= neededCellCount)
return true;
// half had different background colors, it's a data table
if (backgroundDifferenceCellCount >= neededCellCount)
return true;
// Check if there is an alternating row background color indicating a zebra striped style pattern.
if (alternatingRowColorCount > 2) {
Color firstColor = alternatingRowColors[0];
for (int k = 1; k < alternatingRowColorCount; k++) {
// If an odd row was the same color as the first row, its not alternating.
if (k % 2 == 1 && alternatingRowColors[k] == firstColor)
return false;
// If an even row is not the same as the first row, its not alternating.
if (!(k % 2) && alternatingRowColors[k] != firstColor)
return false;
}
return true;
}
return false;
}