static bool isDirectReference(const SVGElement& element)
{
return isSVGPathElement(element)
|| isSVGRectElement(element)
|| isSVGCircleElement(element)
|| isSVGEllipseElement(element)
|| isSVGPolygonElement(element)
|| isSVGPolylineElement(element)
|| isSVGTextElement(element);
}
bool SVGTSpanElement::rendererIsNeeded(const RenderStyle& style)
{
if (parentNode()
&& (isSVGAElement(*parentNode())
#if ENABLE(SVG_FONTS)
|| isSVGAltGlyphElement(*parentNode())
#endif
|| isSVGTextElement(*parentNode())
|| isSVGTextPathElement(*parentNode())
|| isSVGTSpanElement(*parentNode())))
return Element::rendererIsNeeded(style);
return false;
}
AffineTransform SVGGraphicsElement::calculateAnimatedLocalTransform() const
{
AffineTransform matrix;
const ComputedStyle* style = layoutObject() ? layoutObject()->style() : nullptr;
// If CSS property was set, use that, otherwise fallback to attribute (if set).
if (style && style->hasTransform()) {
TransformationMatrix transform;
float zoom = style->effectiveZoom();
// SVGTextElements need special handling for the text positioning code.
if (isSVGTextElement(this)) {
// Do not take into account SVG's zoom rules, transform-origin, or percentage values.
style->applyTransform(transform, LayoutSize(0, 0), ComputedStyle::ExcludeTransformOrigin, ComputedStyle::IncludeMotionPath, ComputedStyle::IncludeIndependentTransformProperties);
} else {
// CSS transforms operate with pre-scaled lengths. To make this work with SVG
// (which applies the zoom factor globally, at the root level) we
//
// * pre-scale the bounding box (to bring it into the same space as the other CSS values)
// * invert the zoom factor (to effectively compute the CSS transform under a 1.0 zoom)
//
// Note: objectBoundingBox is an emptyRect for elements like pattern or clipPath.
// See the "Object bounding box units" section of http://dev.w3.org/csswg/css3-transforms/
if (zoom != 1) {
FloatRect scaledBBox = layoutObject()->objectBoundingBox();
scaledBBox.scale(zoom);
transform.scale(1 / zoom);
style->applyTransform(transform, scaledBBox, ComputedStyle::IncludeTransformOrigin, ComputedStyle::IncludeMotionPath, ComputedStyle::IncludeIndependentTransformProperties);
transform.scale(zoom);
} else {
style->applyTransform(transform, layoutObject()->objectBoundingBox(), ComputedStyle::IncludeTransformOrigin, ComputedStyle::IncludeMotionPath, ComputedStyle::IncludeIndependentTransformProperties);
}
}
// Flatten any 3D transform.
matrix = transform.toAffineTransform();
} else {
m_transform->currentValue()->concatenate(matrix);
}
if (hasSVGRareData())
return *svgRareData()->animateMotionTransform() * matrix;
return matrix;
}
