// The following rules apply for resolving conflicts and figuring out which border
// to use.
// (1) Borders with the 'border-style' of 'hidden' take precedence over all other conflicting
// borders. Any border with this value suppresses all borders at this location.
// (2) Borders with a style of 'none' have the lowest priority. Only if the border properties of all
// the elements meeting at this edge are 'none' will the border be omitted (but note that 'none' is
// the default value for the border style.)
// (3) If none of the styles are 'hidden' and at least one of them is not 'none', then narrow borders
// are discarded in favor of wider ones. If several have the same 'border-width' then styles are preferred
// in this order: 'double', 'solid', 'dashed', 'dotted', 'ridge', 'outset', 'groove', and the lowest: 'inset'.
// (4) If border styles differ only in color, then a style set on a cell wins over one on a row,
// which wins over a row group, column, column group and, lastly, table. It is undefined which color
// is used when two elements of the same type disagree.
static CollapsedBorderValue compareBorders(const CollapsedBorderValue& border1, const CollapsedBorderValue& border2)
{
// Sanity check the values passed in. If either is null, return the other.
if (!border2.exists())
return border1;
if (!border1.exists())
return border2;
// Rule #1 above.
if (border1.style() == BHIDDEN || border2.style() == BHIDDEN)
return CollapsedBorderValue(); // No border should exist at this location.
// Rule #2 above. A style of 'none' has lowest priority and always loses to any other border.
if (border2.style() == BNONE)
return border1;
if (border1.style() == BNONE)
return border2;
// The first part of rule #3 above. Wider borders win.
if (border1.width() != border2.width())
return border1.width() > border2.width() ? border1 : border2;
// The borders have equal width. Sort by border style.
if (border1.style() != border2.style())
return border1.style() > border2.style() ? border1 : border2;
// The border have the same width and style. Rely on precedence (cell over row over row group, etc.)
return border1.precedence >= border2.precedence ? border1 : border2;
}
void RenderTableCell::paintCollapsedBorder(GraphicsContext* graphicsContext, const IntRect& paintRect)
{
if (!table()->currentBorderStyle() || graphicsContext->paintingDisabled())
return;
CollapsedBorderValue leftVal = collapsedLeftBorder();
CollapsedBorderValue rightVal = collapsedRightBorder();
CollapsedBorderValue topVal = collapsedTopBorder();
CollapsedBorderValue bottomVal = collapsedBottomBorder();
// Adjust our x/y/width/height so that we paint the collapsed borders at the correct location.
int topWidth = topVal.width();
int bottomWidth = bottomVal.width();
int leftWidth = leftVal.width();
int rightWidth = rightVal.width();
int x = paintRect.x() - leftWidth / 2;
int y = paintRect.y() - topWidth / 2;
int w = paintRect.width() + leftWidth / 2 + (rightWidth + 1) / 2;
int h = paintRect.height() + topWidth / 2 + (bottomWidth + 1) / 2;
EBorderStyle topStyle = collapsedBorderStyle(topVal.style());
EBorderStyle bottomStyle = collapsedBorderStyle(bottomVal.style());
EBorderStyle leftStyle = collapsedBorderStyle(leftVal.style());
EBorderStyle rightStyle = collapsedBorderStyle(rightVal.style());
bool renderTop = topStyle > BHIDDEN && !topVal.isTransparent();
bool renderBottom = bottomStyle > BHIDDEN && !bottomVal.isTransparent();
bool renderLeft = leftStyle > BHIDDEN && !leftVal.isTransparent();
bool renderRight = rightStyle > BHIDDEN && !rightVal.isTransparent();
// We never paint diagonals at the joins. We simply let the border with the highest
// precedence paint on top of borders with lower precedence.
CollapsedBorders borders;
borders.addBorder(topVal, BSTop, renderTop, x, y, x + w, y + topWidth, topStyle);
borders.addBorder(bottomVal, BSBottom, renderBottom, x, y + h - bottomWidth, x + w, y + h, bottomStyle);
borders.addBorder(leftVal, BSLeft, renderLeft, x, y, x + leftWidth, y + h, leftStyle);
borders.addBorder(rightVal, BSRight, renderRight, x + w - rightWidth, y, x + w, y + h, rightStyle);
const AffineTransform& currentCTM = graphicsContext->getCTM();
bool antialias = !currentCTM.isIdentityOrTranslationOrFlipped();
for (CollapsedBorder* border = borders.nextBorder(); border; border = borders.nextBorder()) {
if (border->borderValue == *table()->currentBorderStyle())
drawLineForBoxSide(graphicsContext, border->x1, border->y1, border->x2, border->y2, border->side,
border->borderValue.color(), border->style, 0, 0, antialias);
}
}
void RenderTableCell::paintCollapsedBorder(GraphicsContext* graphicsContext, int tx, int ty, int w, int h)
{
if (!table()->currentBorderStyle())
return;
bool rtl = table()->style()->direction() == RTL;
CollapsedBorderValue leftVal = collapsedLeftBorder(rtl);
CollapsedBorderValue rightVal = collapsedRightBorder(rtl);
CollapsedBorderValue topVal = collapsedTopBorder();
CollapsedBorderValue bottomVal = collapsedBottomBorder();
// Adjust our x/y/width/height so that we paint the collapsed borders at the correct location.
int topWidth = topVal.width();
int bottomWidth = bottomVal.width();
int leftWidth = leftVal.width();
int rightWidth = rightVal.width();
tx -= leftWidth / 2;
ty -= topWidth / 2;
w += leftWidth / 2 + (rightWidth + 1) / 2;
h += topWidth / 2 + (bottomWidth + 1) / 2;
EBorderStyle topStyle = collapsedBorderStyle(topVal.style());
EBorderStyle bottomStyle = collapsedBorderStyle(bottomVal.style());
EBorderStyle leftStyle = collapsedBorderStyle(leftVal.style());
EBorderStyle rightStyle = collapsedBorderStyle(rightVal.style());
bool renderTop = topStyle > BHIDDEN && !topVal.isTransparent();
bool renderBottom = bottomStyle > BHIDDEN && !bottomVal.isTransparent();
bool renderLeft = leftStyle > BHIDDEN && !leftVal.isTransparent();
bool renderRight = rightStyle > BHIDDEN && !rightVal.isTransparent();
// We never paint diagonals at the joins. We simply let the border with the highest
// precedence paint on top of borders with lower precedence.
CollapsedBorders borders;
borders.addBorder(topVal, BSTop, renderTop, tx, ty, tx + w, ty + topWidth, topStyle);
borders.addBorder(bottomVal, BSBottom, renderBottom, tx, ty + h - bottomWidth, tx + w, ty + h, bottomStyle);
borders.addBorder(leftVal, BSLeft, renderLeft, tx, ty, tx + leftWidth, ty + h, leftStyle);
borders.addBorder(rightVal, BSRight, renderRight, tx + w - rightWidth, ty, tx + w, ty + h, rightStyle);
for (CollapsedBorder* border = borders.nextBorder(); border; border = borders.nextBorder()) {
if (border->borderValue == *table()->currentBorderStyle())
drawLineForBoxSide(graphicsContext, border->x1, border->y1, border->x2, border->y2, border->side,
border->borderValue.color(), style()->color(), border->style, 0, 0);
}
}
// The following rules apply for resolving conflicts and figuring out which border
// to use.
// (1) Borders with the 'border-style' of 'hidden' take precedence over all other conflicting
// borders. Any border with this value suppresses all borders at this location.
// (2) Borders with a style of 'none' have the lowest priority. Only if the border properties of all
// the elements meeting at this edge are 'none' will the border be omitted (but note that 'none' is
// the default value for the border style.)
// (3) If none of the styles are 'hidden' and at least one of them is not 'none', then narrow borders
// are discarded in favor of wider ones. If several have the same 'border-width' then styles are preferred
// in this order: 'double', 'solid', 'dashed', 'dotted', 'ridge', 'outset', 'groove', and the lowest: 'inset'.
// (4) If border styles differ only in color, then a style set on a cell wins over one on a row,
// which wins over a row group, column, column group and, lastly, table. It is undefined which color
// is used when two elements of the same type disagree.
static int compareBorders(const CollapsedBorderValue& border1, const CollapsedBorderValue& border2)
{
// Sanity check the values passed in. The null border have lowest priority.
if (!border2.exists()) {
if (!border1.exists())
return 0;
return 1;
}
if (!border1.exists())
return -1;
// Rule #1 above.
if (border2.style() == BHIDDEN) {
if (border1.style() == BHIDDEN)
return 0;
return -1;
}
if (border1.style() == BHIDDEN)
return 1;
// Rule #2 above. A style of 'none' has lowest priority and always loses to any other border.
if (border2.style() == BNONE) {
if (border1.style() == BNONE)
return 0;
return 1;
}
if (border1.style() == BNONE)
return -1;
// The first part of rule #3 above. Wider borders win.
if (border1.width() != border2.width())
return border1.width() < border2.width() ? -1 : 1;
// The borders have equal width. Sort by border style.
if (border1.style() != border2.style())
return border1.style() < border2.style() ? -1 : 1;
// The border have the same width and style. Rely on precedence (cell over row over row group, etc.)
if (border1.precedence() == border2.precedence())
return 0;
return border1.precedence() < border2.precedence() ? -1 : 1;
}
void RenderTableCell::readyWRATHWidgetCollapsedBorder(PaintedWidgetsOfWRATHHandle& handle,
ContextOfWRATH *wrath_context,
int tx, int ty, int w, int h)
{
RenderTableCell_ReadyWRATHWidgetCollapsedBorder *d(RenderTableCell_ReadyWRATHWidgetCollapsedBorder::object(this, handle));
ContextOfWRATH::AutoPushNode autoPushRoot(wrath_context, d->m_root_node);
ContextOfWRATH::AutoPushNode autoPushSkip(wrath_context, d->m_skip_node);
if (!table()->currentBorderStyle()) {
d->m_skip_node.widget()->visible(false);
return;
}
d->m_skip_node.widget()->visible(true);
CollapsedBorderValue leftVal = collapsedLeftBorder();
CollapsedBorderValue rightVal = collapsedRightBorder();
CollapsedBorderValue topVal = collapsedTopBorder();
CollapsedBorderValue bottomVal = collapsedBottomBorder();
// Adjust our x/y/width/height so that we paint the collapsed borders at the correct location.
int topWidth = topVal.width();
int bottomWidth = bottomVal.width();
int leftWidth = leftVal.width();
int rightWidth = rightVal.width();
tx -= leftWidth / 2;
ty -= topWidth / 2;
w += leftWidth / 2 + (rightWidth + 1) / 2;
h += topWidth / 2 + (bottomWidth + 1) / 2;
EBorderStyle topStyle = collapsedBorderStyle(topVal.style());
EBorderStyle bottomStyle = collapsedBorderStyle(bottomVal.style());
EBorderStyle leftStyle = collapsedBorderStyle(leftVal.style());
EBorderStyle rightStyle = collapsedBorderStyle(rightVal.style());
bool renderTop = topStyle > BHIDDEN && !topVal.isTransparent();
bool renderBottom = bottomStyle > BHIDDEN && !bottomVal.isTransparent();
bool renderLeft = leftStyle > BHIDDEN && !leftVal.isTransparent();
bool renderRight = rightStyle > BHIDDEN && !rightVal.isTransparent();
// We never paint diagonals at the joins. We simply let the border with the highest
// precedence paint on top of borders with lower precedence.
CollapsedBorders borders;
borders.addBorder(topVal, BSTop, renderTop, tx, ty, tx + w, ty + topWidth, topStyle);
borders.addBorder(bottomVal, BSBottom, renderBottom, tx, ty + h - bottomWidth, tx + w, ty + h, bottomStyle);
borders.addBorder(leftVal, BSLeft, renderLeft, tx, ty, tx + leftWidth, ty + h, leftStyle);
borders.addBorder(rightVal, BSRight, renderRight, tx + w - rightWidth, ty, tx + w, ty + h, rightStyle);
/*
[WRATH-DANGER]: These are not used at the moment
const AffineTransform& currentCTM = graphicsContext->getCTM();
bool antialias = !currentCTM.isIdentityOrTranslationOrFlipped();
*/
d->m_top.visible(false);
d->m_bottom.visible(false);
d->m_left.visible(false);
d->m_right.visible(false);
for (CollapsedBorder* border = borders.nextBorder(); border; border = borders.nextBorder()) {
if (border->borderValue == *table()->currentBorderStyle()) {
PaintedWidgetsOfWRATHHandle* bh = NULL;
if (border->borderValue == topVal)
bh = &d->m_top;
else if (border->borderValue == bottomVal)
bh = &d->m_bottom;
else if (border->borderValue == leftVal)
bh = &d->m_left;
else if (border->borderValue == rightVal)
bh = &d->m_right;
else
ASSERT_NOT_REACHED();
bh->visible(true);
readyWRATHWidgetDrawLineForBoxSide(*bh, wrath_context, border->x1, border->y1, border->x2, border->y2, border->side,
border->borderValue.color(), border->style, 0, 0, false /*antialias*/);
}
}
}
void TableCellPainter::paintCollapsedBorders(const PaintInfo& paintInfo, const LayoutPoint& paintOffset)
{
ASSERT(paintInfo.phase == PaintPhaseCollapsedTableBorders);
if (!paintInfo.shouldPaintWithinRoot(&m_renderTableCell) || m_renderTableCell.style()->visibility() != VISIBLE)
return;
LayoutRect paintRect = paintBounds(paintOffset, AddOffsetFromParent);
if (paintRect.y() - m_renderTableCell.table()->outerBorderTop() >= paintInfo.rect.maxY())
return;
if (paintRect.maxY() + m_renderTableCell.table()->outerBorderBottom() <= paintInfo.rect.y())
return;
if (!m_renderTableCell.table()->currentBorderValue())
return;
RenderDrawingRecorder recorder(paintInfo.context, m_renderTableCell, paintInfo.phase, paintRect);
if (recorder.canUseCachedDrawing())
return;
const RenderStyle* styleForCellFlow = m_renderTableCell.styleForCellFlow();
CollapsedBorderValue leftVal = cachedCollapsedLeftBorder(styleForCellFlow);
CollapsedBorderValue rightVal = cachedCollapsedRightBorder(styleForCellFlow);
CollapsedBorderValue topVal = cachedCollapsedTopBorder(styleForCellFlow);
CollapsedBorderValue bottomVal = cachedCollapsedBottomBorder(styleForCellFlow);
// Adjust our x/y/width/height so that we paint the collapsed borders at the correct location.
int topWidth = topVal.width();
int bottomWidth = bottomVal.width();
int leftWidth = leftVal.width();
int rightWidth = rightVal.width();
IntRect borderRect = pixelSnappedIntRect(paintRect.x() - leftWidth / 2,
paintRect.y() - topWidth / 2,
paintRect.width() + leftWidth / 2 + (rightWidth + 1) / 2,
paintRect.height() + topWidth / 2 + (bottomWidth + 1) / 2);
EBorderStyle topStyle = collapsedBorderStyle(topVal.style());
EBorderStyle bottomStyle = collapsedBorderStyle(bottomVal.style());
EBorderStyle leftStyle = collapsedBorderStyle(leftVal.style());
EBorderStyle rightStyle = collapsedBorderStyle(rightVal.style());
bool renderTop = topStyle > BHIDDEN && !topVal.isTransparent();
bool renderBottom = bottomStyle > BHIDDEN && !bottomVal.isTransparent();
bool renderLeft = leftStyle > BHIDDEN && !leftVal.isTransparent();
bool renderRight = rightStyle > BHIDDEN && !rightVal.isTransparent();
// We never paint diagonals at the joins. We simply let the border with the highest
// precedence paint on top of borders with lower precedence.
CollapsedBorders borders;
borders.addBorder(topVal, BSTop, renderTop, borderRect.x(), borderRect.y(), borderRect.maxX(), borderRect.y() + topWidth, topStyle);
borders.addBorder(bottomVal, BSBottom, renderBottom, borderRect.x(), borderRect.maxY() - bottomWidth, borderRect.maxX(), borderRect.maxY(), bottomStyle);
borders.addBorder(leftVal, BSLeft, renderLeft, borderRect.x(), borderRect.y(), borderRect.x() + leftWidth, borderRect.maxY(), leftStyle);
borders.addBorder(rightVal, BSRight, renderRight, borderRect.maxX() - rightWidth, borderRect.y(), borderRect.maxX(), borderRect.maxY(), rightStyle);
GraphicsContext* graphicsContext = paintInfo.context;
bool antialias = BoxPainter::shouldAntialiasLines(graphicsContext);
for (CollapsedBorder* border = borders.nextBorder(); border; border = borders.nextBorder()) {
if (border->borderValue.isSameIgnoringColor(*m_renderTableCell.table()->currentBorderValue())) {
ObjectPainter::drawLineForBoxSide(graphicsContext, border->x1, border->y1, border->x2, border->y2, border->side,
border->borderValue.color().resolve(m_renderTableCell.resolveColor(CSSPropertyColor)), border->style, 0, 0, antialias);
}
}
}