AffineTransform SVGGraphicsElement::animatedLocalTransform() const
{
AffineTransform matrix;
RenderStyle* style = renderer() ? &renderer()->style() : nullptr;
// If CSS property was set, use that, otherwise fallback to attribute (if set).
if (style && style->hasTransform()) {
// 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/
TransformationMatrix transform;
style->applyTransform(transform, renderer()->objectBoundingBox());
// Flatten any 3D transform.
matrix = transform.toAffineTransform();
// CSS bakes the zoom factor into lengths, including translation components.
// In order to align CSS & SVG transforms, we need to invert this operation.
float zoom = style->effectiveZoom();
if (zoom != 1) {
matrix.setE(matrix.e() / zoom);
matrix.setF(matrix.f() / zoom);
}
} else
transform().concatenate(matrix);
if (m_supplementalTransform)
return *m_supplementalTransform * matrix;
return matrix;
}
AffineTransform SVGGraphicsElement::calculateAnimatedLocalTransform() const
{
AffineTransform matrix;
RenderStyle* style = renderer() ? renderer()->style() : 0;
// 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, IntSize(0, 0), RenderStyle::ExcludeTransformOrigin);
} 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 = renderer()->objectBoundingBox();
scaledBBox.scale(zoom);
transform.scale(1 / zoom);
style->applyTransform(transform, scaledBBox);
transform.scale(zoom);
} else {
style->applyTransform(transform, renderer()->objectBoundingBox());
}
}
// Flatten any 3D transform.
matrix = transform.toAffineTransform();
} else {
m_transform->currentValue()->concatenate(matrix);
}
if (hasSVGRareData())
return *svgRareData()->animateMotionTransform() * matrix;
return matrix;
}
bool AnimationBase::computeTransformedExtentViaMatrix(const FloatRect& rendererBox, const RenderStyle& style, LayoutRect& bounds) const
{
TransformationMatrix transform;
style.applyTransform(transform, rendererBox, RenderStyle::IncludeTransformOrigin);
if (!transform.isAffine())
return false;
TransformationMatrix::Decomposed2Type fromDecomp;
transform.decompose2(fromDecomp);
// Any rotation prevents us from using a simple start/end rect union.
if (fromDecomp.angle)
return false;
bounds = LayoutRect(transform.mapRect(bounds));
return true;
}
AffineTransform SVGStyledTransformableElement::animatedLocalTransform() const
{
AffineTransform matrix;
RenderStyle* style = renderer() ? renderer()->style() : 0;
// if CSS property was set, use that, otherwise fallback to attribute (if set)
if (style && style->hasTransform()) {
TransformationMatrix t;
// For now, the transform-origin is not taken into account
// Also, any percentage values will not be taken into account
style->applyTransform(t, IntSize(0, 0), RenderStyle::ExcludeTransformOrigin);
// Flatten any 3D transform
matrix = t.toAffineTransform();
} else
transform().concatenate(matrix);
if (m_supplementalTransform)
return *m_supplementalTransform * matrix;
return matrix;
}
AffineTransform SVGGraphicsElement::animatedLocalTransform() const
{
AffineTransform matrix;
RenderStyle* style = renderer() ? &renderer()->style() : nullptr;
// If CSS property was set, use that, otherwise fallback to attribute (if set).
if (style && style->hasTransform()) {
// 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/
TransformationMatrix transform;
style->applyTransform(transform, renderer()->objectBoundingBox());
// Flatten any 3D transform.
matrix = transform.toAffineTransform();
} else
transform().concatenate(matrix);
if (m_supplementalTransform)
return *m_supplementalTransform * matrix;
return matrix;
}
// We override SVGGraphics::animatedLocalTransform() so that the transform-origin
// is not taken into account.
AffineTransform SVGTextElement::animatedLocalTransform() const
{
AffineTransform matrix;
RenderStyle* style = renderer() ? &renderer()->style() : nullptr;
// if CSS property was set, use that, otherwise fallback to attribute (if set)
if (style && style->hasTransform()) {
TransformationMatrix t;
// For now, the transform-origin is not taken into account
// Also, any percentage values will not be taken into account
style->applyTransform(t, FloatRect(0, 0, 0, 0), RenderStyle::ExcludeTransformOrigin);
// Flatten any 3D transform
matrix = t.toAffineTransform();
} else
transform().concatenate(matrix);
const AffineTransform* transform = const_cast<SVGTextElement*>(this)->supplementalTransform();
if (transform)
return *transform * matrix;
return matrix;
}