const Path& BasicShapeCircle::path(const FloatRect& boundingBox)
{
float centerX = floatValueForCenterCoordinate(m_centerX, boundingBox.width());
float centerY = floatValueForCenterCoordinate(m_centerY, boundingBox.height());
float radius = floatValueForRadiusInBox(boundingBox.width(), boundingBox.height());
return cachedEllipsePath(FloatRect(centerX - radius + boundingBox.x(), centerY - radius + boundingBox.y(), radius * 2, radius * 2));
}
float BasicShapeCircle::floatValueForRadiusInBox(float boxWidth, float boxHeight) const
{
if (m_radius.type() == BasicShapeRadius::Value)
return floatValueForLength(m_radius.value(), sqrtf((boxWidth * boxWidth + boxHeight * boxHeight) / 2));
float centerX = floatValueForCenterCoordinate(m_centerX, boxWidth);
float centerY = floatValueForCenterCoordinate(m_centerY, boxHeight);
if (m_radius.type() == BasicShapeRadius::ClosestSide)
return std::min(std::min(centerX, boxWidth - centerX), std::min(centerY, boxHeight - centerY));
// If radius.type() == BasicShapeRadius::FarthestSide.
return std::max(std::max(centerX, boxWidth - centerX), std::max(centerY, boxHeight - centerY));
}
void BasicShapeEllipse::path(Path& path, const FloatRect& boundingBox)
{
ASSERT(path.isEmpty());
float centerX = floatValueForCenterCoordinate(m_centerX, boundingBox.width());
float centerY = floatValueForCenterCoordinate(m_centerY, boundingBox.height());
float radiusX = floatValueForRadiusInBox(m_radiusX, centerX, boundingBox.width());
float radiusY = floatValueForRadiusInBox(m_radiusY, centerY, boundingBox.height());
path.addEllipse(FloatRect(
centerX - radiusX + boundingBox.x(),
centerY - radiusY + boundingBox.y(),
radiusX * 2,
radiusY * 2));
}
std::unique_ptr<Shape> Shape::createShape(const BasicShape* basicShape, const LayoutSize& logicalBoxSize, WritingMode writingMode, float margin)
{
ASSERT(basicShape);
bool horizontalWritingMode = isHorizontalWritingMode(writingMode);
float boxWidth = horizontalWritingMode ? logicalBoxSize.width() : logicalBoxSize.height();
float boxHeight = horizontalWritingMode ? logicalBoxSize.height() : logicalBoxSize.width();
std::unique_ptr<Shape> shape;
switch (basicShape->type()) {
case BasicShape::BasicShapeCircleType: {
const BasicShapeCircle* circle = static_cast<const BasicShapeCircle*>(basicShape);
float centerX = floatValueForCenterCoordinate(circle->centerX(), boxWidth);
float centerY = floatValueForCenterCoordinate(circle->centerY(), boxHeight);
float radius = circle->floatValueForRadiusInBox(boxWidth, boxHeight);
FloatPoint logicalCenter = physicalPointToLogical(FloatPoint(centerX, centerY), logicalBoxSize.height(), writingMode);
shape = createCircleShape(logicalCenter, radius);
break;
}
case BasicShape::BasicShapeEllipseType: {
const BasicShapeEllipse* ellipse = static_cast<const BasicShapeEllipse*>(basicShape);
float centerX = floatValueForCenterCoordinate(ellipse->centerX(), boxWidth);
float centerY = floatValueForCenterCoordinate(ellipse->centerY(), boxHeight);
float radiusX = ellipse->floatValueForRadiusInBox(ellipse->radiusX(), centerX, boxWidth);
float radiusY = ellipse->floatValueForRadiusInBox(ellipse->radiusY(), centerY, boxHeight);
FloatPoint logicalCenter = physicalPointToLogical(FloatPoint(centerX, centerY), logicalBoxSize.height(), writingMode);
shape = createEllipseShape(logicalCenter, FloatSize(radiusX, radiusY));
break;
}
case BasicShape::BasicShapePolygonType: {
const BasicShapePolygon& polygon = *static_cast<const BasicShapePolygon*>(basicShape);
const Vector<Length>& values = polygon.values();
size_t valuesSize = values.size();
ASSERT(!(valuesSize % 2));
std::unique_ptr<Vector<FloatPoint>> vertices = std::make_unique<Vector<FloatPoint>>(valuesSize / 2);
for (unsigned i = 0; i < valuesSize; i += 2) {
FloatPoint vertex(
floatValueForLength(values.at(i), boxWidth),
floatValueForLength(values.at(i + 1), boxHeight));
(*vertices)[i / 2] = physicalPointToLogical(vertex, logicalBoxSize.height(), writingMode);
}
shape = createPolygonShape(WTF::move(vertices), polygon.windRule());
break;
}
case BasicShape::BasicShapeInsetType: {
const BasicShapeInset& inset = *static_cast<const BasicShapeInset*>(basicShape);
float left = floatValueForLength(inset.left(), boxWidth);
float top = floatValueForLength(inset.top(), boxHeight);
FloatRect rect(left,
top,
std::max<float>(boxWidth - left - floatValueForLength(inset.right(), boxWidth), 0),
std::max<float>(boxHeight - top - floatValueForLength(inset.bottom(), boxHeight), 0));
FloatRect logicalRect = physicalRectToLogical(rect, logicalBoxSize.height(), writingMode);
FloatSize boxSize(boxWidth, boxHeight);
FloatSize topLeftRadius = physicalSizeToLogical(floatSizeForLengthSize(inset.topLeftRadius(), boxSize), writingMode);
FloatSize topRightRadius = physicalSizeToLogical(floatSizeForLengthSize(inset.topRightRadius(), boxSize), writingMode);
FloatSize bottomLeftRadius = physicalSizeToLogical(floatSizeForLengthSize(inset.bottomLeftRadius(), boxSize), writingMode);
FloatSize bottomRightRadius = physicalSizeToLogical(floatSizeForLengthSize(inset.bottomRightRadius(), boxSize), writingMode);
FloatRoundedRect::Radii cornerRadii(topLeftRadius, topRightRadius, bottomLeftRadius, bottomRightRadius);
cornerRadii.scale(calcBorderRadiiConstraintScaleFor(logicalRect, cornerRadii));
shape = createInsetShape(FloatRoundedRect(logicalRect, cornerRadii));
break;
}
default:
ASSERT_NOT_REACHED();
}
shape->m_writingMode = writingMode;
shape->m_margin = margin;
return shape;
}
