int RenderBR::lineHeight(bool firstLine, bool /*isRootLineBox*/) const
{
if (firstTextBox() && !firstTextBox()->isText())
return 0;
if (firstLine) {
RenderStyle* s = style(firstLine);
Length lh = s->lineHeight();
if (lh.isNegative()) {
if (s == style()) {
if (m_lineHeight == -1)
m_lineHeight = RenderObject::lineHeight(false);
return m_lineHeight;
}
return s->font().lineSpacing();
}
if (lh.isPercent())
return lh.calcMinValue(s->fontSize());
return lh.value();
}
if (m_lineHeight == -1)
m_lineHeight = RenderObject::lineHeight(false);
return m_lineHeight;
}
PositionWithAffinity LayoutSVGInlineText::positionForPoint(const LayoutPoint& point)
{
if (!firstTextBox() || !textLength())
return createPositionWithAffinity(0, DOWNSTREAM);
ASSERT(m_scalingFactor);
float baseline = m_scaledFont.fontMetrics().floatAscent() / m_scalingFactor;
LayoutBlock* containingBlock = this->containingBlock();
ASSERT(containingBlock);
// Map local point to absolute point, as the character origins stored in the text fragments use absolute coordinates.
FloatPoint absolutePoint(point);
absolutePoint.moveBy(containingBlock->location());
float closestDistance = std::numeric_limits<float>::max();
float closestDistancePosition = 0;
const SVGTextFragment* closestDistanceFragment = 0;
SVGInlineTextBox* closestDistanceBox = 0;
AffineTransform fragmentTransform;
for (InlineTextBox* box = firstTextBox(); box; box = box->nextTextBox()) {
if (!box->isSVGInlineTextBox())
continue;
SVGInlineTextBox* textBox = toSVGInlineTextBox(box);
Vector<SVGTextFragment>& fragments = textBox->textFragments();
unsigned textFragmentsSize = fragments.size();
for (unsigned i = 0; i < textFragmentsSize; ++i) {
const SVGTextFragment& fragment = fragments.at(i);
FloatRect fragmentRect(fragment.x, fragment.y - baseline, fragment.width, fragment.height);
fragment.buildFragmentTransform(fragmentTransform);
if (!fragmentTransform.isIdentity())
fragmentRect = fragmentTransform.mapRect(fragmentRect);
float distance = 0;
if (!fragmentRect.contains(absolutePoint))
distance = squaredDistanceToClosestPoint(fragmentRect, absolutePoint);
if (distance <= closestDistance) {
closestDistance = distance;
closestDistanceBox = textBox;
closestDistanceFragment = &fragment;
closestDistancePosition = fragmentRect.x();
}
}
}
if (!closestDistanceFragment)
return createPositionWithAffinity(0, DOWNSTREAM);
int offset = closestDistanceBox->offsetForPositionInFragment(*closestDistanceFragment, absolutePoint.x() - closestDistancePosition, true);
return createPositionWithAffinity(offset + closestDistanceBox->start(), offset > 0 ? VP_UPSTREAM_IF_POSSIBLE : DOWNSTREAM);
}
VisiblePosition RenderSVGInlineText::positionForPoint(const LayoutPoint& point, const RenderRegion*)
{
if (!firstTextBox() || !textLength())
return createVisiblePosition(0, DOWNSTREAM);
float baseline = m_scaledFont.fontMetrics().floatAscent();
RenderBlock* containingBlock = this->containingBlock();
ASSERT(containingBlock);
// Map local point to absolute point, as the character origins stored in the text fragments use absolute coordinates.
FloatPoint absolutePoint(point);
absolutePoint.moveBy(containingBlock->location());
float closestDistance = std::numeric_limits<float>::max();
float closestDistancePosition = 0;
const SVGTextFragment* closestDistanceFragment = nullptr;
SVGInlineTextBox* closestDistanceBox = nullptr;
AffineTransform fragmentTransform;
for (InlineTextBox* box = firstTextBox(); box; box = box->nextTextBox()) {
if (!is<SVGInlineTextBox>(*box))
continue;
auto& textBox = downcast<SVGInlineTextBox>(*box);
Vector<SVGTextFragment>& fragments = textBox.textFragments();
unsigned textFragmentsSize = fragments.size();
for (unsigned i = 0; i < textFragmentsSize; ++i) {
const SVGTextFragment& fragment = fragments.at(i);
FloatRect fragmentRect(fragment.x, fragment.y - baseline, fragment.width, fragment.height);
fragment.buildFragmentTransform(fragmentTransform);
if (!fragmentTransform.isIdentity())
fragmentRect = fragmentTransform.mapRect(fragmentRect);
float distance = powf(fragmentRect.x() - absolutePoint.x(), 2) +
powf(fragmentRect.y() + fragmentRect.height() / 2 - absolutePoint.y(), 2);
if (distance < closestDistance) {
closestDistance = distance;
closestDistanceBox = &textBox;
closestDistanceFragment = &fragment;
closestDistancePosition = fragmentRect.x();
}
}
}
if (!closestDistanceFragment)
return createVisiblePosition(0, DOWNSTREAM);
int offset = closestDistanceBox->offsetForPositionInFragment(*closestDistanceFragment, absolutePoint.x() - closestDistancePosition, true);
return createVisiblePosition(offset + closestDistanceBox->start(), offset > 0 ? VP_UPSTREAM_IF_POSSIBLE : DOWNSTREAM);
}
VisiblePosition RenderSVGInlineText::positionForPoint(const IntPoint& point)
{
if (!firstTextBox() || !textLength())
return createVisiblePosition(0, DOWNSTREAM);
RenderStyle* style = this->style();
ASSERT(style);
int baseline = style->font().ascent();
RenderBlock* containingBlock = this->containingBlock();
ASSERT(containingBlock);
// Map local point to absolute point, as the character origins stored in the text fragments use absolute coordinates.
FloatPoint absolutePoint(point);
absolutePoint.move(containingBlock->x(), containingBlock->y());
float closestDistance = std::numeric_limits<float>::max();
float closestDistancePosition = 0;
const SVGTextFragment* closestDistanceFragment = 0;
SVGInlineTextBox* closestDistanceBox = 0;
for (InlineTextBox* box = firstTextBox(); box; box = box->nextTextBox()) {
ASSERT(box->isSVGInlineTextBox());
SVGInlineTextBox* textBox = static_cast<SVGInlineTextBox*>(box);
Vector<SVGTextFragment>& fragments = textBox->textFragments();
unsigned textFragmentsSize = fragments.size();
for (unsigned i = 0; i < textFragmentsSize; ++i) {
const SVGTextFragment& fragment = fragments.at(i);
FloatRect fragmentRect(fragment.x, fragment.y - baseline, fragment.width, fragment.height);
if (!fragment.transform.isIdentity())
fragmentRect = fragment.transform.mapRect(fragmentRect);
float distance = powf(fragmentRect.x() - absolutePoint.x(), 2) +
powf(fragmentRect.y() + fragmentRect.height() / 2 - absolutePoint.y(), 2);
if (distance < closestDistance) {
closestDistance = distance;
closestDistanceBox = textBox;
closestDistanceFragment = &fragment;
closestDistancePosition = fragmentRect.x();
}
}
}
if (!closestDistanceFragment)
return createVisiblePosition(0, DOWNSTREAM);
int offset = closestDistanceBox->offsetForPositionInFragment(*closestDistanceFragment, absolutePoint.x() - closestDistancePosition, true);
return createVisiblePosition(offset + closestDistanceBox->start(), offset > 0 ? VP_UPSTREAM_IF_POSSIBLE : DOWNSTREAM);
}
IntRect RenderSVGInlineText::linesBoundingBox() const
{
IntRect boundingBox;
for (InlineTextBox* box = firstTextBox(); box; box = box->nextTextBox())
boundingBox.unite(box->calculateBoundaries());
return boundingBox;
}
FloatRect LayoutSVGInlineText::floatLinesBoundingBox() const
{
FloatRect boundingBox;
for (InlineTextBox* box = firstTextBox(); box; box = box->nextTextBox())
boundingBox.unite(box->calculateBoundaries().toFloatRect());
return boundingBox;
}
IntRect RenderSVGInlineText::computeAbsoluteRectForRange(int startPos, int endPos)
{
IntRect rect;
RenderBlock* cb = containingBlock();
if (!cb || !cb->container())
return rect;
RenderSVGRoot* root = findSVGRootObject(parent());
if (!root)
return rect;
for (InlineTextBox* box = firstTextBox(); box; box = box->nextTextBox())
rect.unite(box->selectionRect(0, 0, startPos, endPos));
// Mimic RenderBox::computeAbsoluteRepaintRect() functionality. But only the subset needed for SVG and respecting SVG transformations.
int x, y;
cb->container()->absolutePosition(x, y);
// Remove HTML parent translation offsets here! These need to be retrieved from the RenderSVGRoot object.
// But do take the containingBlocks's container position into account, ie. SVG text in scrollable <div>.
AffineTransform htmlParentCtm = root->RenderContainer::absoluteTransform();
FloatRect fixedRect(narrowPrecisionToFloat(rect.x() + x - xPos() - htmlParentCtm.e()), narrowPrecisionToFloat(rect.y() + y - yPos() - htmlParentCtm.f()), rect.width(), rect.height());
return enclosingIntRect(absoluteTransform().mapRect(fixedRect));
}
VisiblePosition RenderSVGInlineText::positionForCoordinates(int x, int y)
{
SVGInlineTextBox* textBox = static_cast<SVGInlineTextBox*>(firstTextBox());
if (!textBox || textLength() == 0)
return VisiblePosition(element(), 0, DOWNSTREAM);
SVGRootInlineBox* rootBox = textBox->svgRootInlineBox();
RenderObject* object = rootBox ? rootBox->object() : 0;
if (!object)
return VisiblePosition(element(), 0, DOWNSTREAM);
int offset = 0;
for (SVGInlineTextBox* box = textBox; box; box = static_cast<SVGInlineTextBox*>(box->nextTextBox())) {
if (box->svgCharacterHitsPosition(x + object->xPos(), y + object->yPos(), offset)) {
// If we're not at the end/start of the box, stop looking for other selected boxes.
if (box->direction() == LTR) {
if (offset <= (int) box->end() + 1)
break;
} else {
if (offset > (int) box->start())
break;
}
}
}
return VisiblePosition(element(), offset, DOWNSTREAM);
}
FloatQuad RenderSVGInlineText::computeRepaintQuadForRange(RenderBoxModelObject* repaintContainer, int startPos, int endPos)
{
RenderBlock* cb = containingBlock();
if (!cb || !cb->container())
return FloatQuad();
RenderSVGRoot* root = findSVGRootObject(parent());
if (!root)
return FloatQuad();
IntRect rect;
for (InlineTextBox* box = firstTextBox(); box; box = box->nextTextBox())
rect.unite(box->selectionRect(0, 0, startPos, endPos));
return localToContainerQuad(FloatQuad(rect), repaintContainer);
}
PositionWithAffinity LayoutSVGInlineText::positionForPoint(const LayoutPoint& point)
{
if (!hasTextBoxes() || !textLength())
return createPositionWithAffinity(0);
ASSERT(m_scalingFactor);
float baseline = m_scaledFont.getFontMetrics().floatAscent() / m_scalingFactor;
LayoutBlock* containingBlock = this->containingBlock();
ASSERT(containingBlock);
// Map local point to absolute point, as the character origins stored in the text fragments use absolute coordinates.
FloatPoint absolutePoint(point);
absolutePoint.moveBy(containingBlock->location());
float closestDistance = std::numeric_limits<float>::max();
float closestDistancePosition = 0;
const SVGTextFragment* closestDistanceFragment = nullptr;
SVGInlineTextBox* closestDistanceBox = nullptr;
for (InlineTextBox* box = firstTextBox(); box; box = box->nextTextBox()) {
if (!box->isSVGInlineTextBox())
continue;
SVGInlineTextBox* textBox = toSVGInlineTextBox(box);
for (const SVGTextFragment& fragment : textBox->textFragments()) {
FloatRect fragmentRect = fragment.boundingBox(baseline);
float distance = 0;
if (!fragmentRect.contains(absolutePoint))
distance = fragmentRect.squaredDistanceTo(absolutePoint);
if (distance <= closestDistance) {
closestDistance = distance;
closestDistanceBox = textBox;
closestDistanceFragment = &fragment;
closestDistancePosition = fragmentRect.x();
}
}
}
if (!closestDistanceFragment)
return createPositionWithAffinity(0);
int offset = closestDistanceBox->offsetForPositionInFragment(*closestDistanceFragment, LayoutUnit(absolutePoint.x() - closestDistancePosition), true);
return createPositionWithAffinity(offset + closestDistanceBox->start(), offset > 0 ? VP_UPSTREAM_IF_POSSIBLE : TextAffinity::Downstream);
}
VisiblePosition RenderSVGInlineText::positionForPoint(const IntPoint& point)
{
SVGInlineTextBox* textBox = static_cast<SVGInlineTextBox*>(firstTextBox());
if (!textBox || textLength() == 0)
return createVisiblePosition(0, DOWNSTREAM);
SVGRootInlineBox* rootBox = textBox->svgRootInlineBox();
RenderBlock* object = rootBox ? rootBox->block() : 0;
if (!object)
return createVisiblePosition(0, DOWNSTREAM);
int closestOffsetInBox = 0;
// FIXME: This approach is wrong. The correct code would first find the
// closest SVGInlineTextBox to the point, and *then* ask only that inline box
// what the closest text offset to that point is. This code instead walks
// through all boxes in order, so when you click "near" a box, you'll actually
// end up returning the nearest offset in the last box, even if the
// nearest offset to your click is contained in another box.
for (SVGInlineTextBox* box = textBox; box; box = static_cast<SVGInlineTextBox*>(box->nextTextBox())) {
if (box->svgCharacterHitsPosition(point.x() + object->x(), point.y() + object->y(), closestOffsetInBox)) {
// If we're not at the end/start of the box, stop looking for other selected boxes.
if (box->direction() == LTR) {
if (closestOffsetInBox <= (int) box->end() + 1)
break;
} else {
if (closestOffsetInBox > (int) box->start())
break;
}
}
}
return createVisiblePosition(closestOffsetInBox, DOWNSTREAM);
}
int RenderBR::baselinePosition(bool firstLine, bool isRootLineBox) const
{
if (firstTextBox() && !firstTextBox()->isText())
return 0;
return RenderText::baselinePosition(firstLine, isRootLineBox);
}
InlineBox *RenderBR::inlineBox(int offset, EAffinity affinity)
{
return firstTextBox();
}
