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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/dom/SVGEllipseElement.h"
#include "mozilla/dom/SVGEllipseElementBinding.h"
#include "mozilla/gfx/2D.h"
#include "mozilla/gfx/PathHelpers.h"
#include "mozilla/RefPtr.h"
NS_IMPL_NS_NEW_NAMESPACED_SVG_ELEMENT(Ellipse)
using namespace mozilla::gfx;
namespace mozilla {
namespace dom {
JSObject*
SVGEllipseElement::WrapNode(JSContext *aCx, JS::Handle<JSObject*> aGivenProto)
{
return SVGEllipseElementBinding::Wrap(aCx, this, aGivenProto);
}
nsSVGElement::LengthInfo SVGEllipseElement::sLengthInfo[4] =
{
{ &nsGkAtoms::cx, 0, nsIDOMSVGLength::SVG_LENGTHTYPE_NUMBER, SVGContentUtils::X },
{ &nsGkAtoms::cy, 0, nsIDOMSVGLength::SVG_LENGTHTYPE_NUMBER, SVGContentUtils::Y },
{ &nsGkAtoms::rx, 0, nsIDOMSVGLength::SVG_LENGTHTYPE_NUMBER, SVGContentUtils::X },
{ &nsGkAtoms::ry, 0, nsIDOMSVGLength::SVG_LENGTHTYPE_NUMBER, SVGContentUtils::Y },
};
//----------------------------------------------------------------------
// Implementation
SVGEllipseElement::SVGEllipseElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo)
: SVGEllipseElementBase(aNodeInfo)
{
}
//----------------------------------------------------------------------
// nsIDOMNode methods
NS_IMPL_ELEMENT_CLONE_WITH_INIT(SVGEllipseElement)
//----------------------------------------------------------------------
// nsIDOMSVGEllipseElement methods
already_AddRefed<SVGAnimatedLength>
SVGEllipseElement::Cx()
{
return mLengthAttributes[CX].ToDOMAnimatedLength(this);
}
already_AddRefed<SVGAnimatedLength>
SVGEllipseElement::Cy()
{
return mLengthAttributes[CY].ToDOMAnimatedLength(this);
}
already_AddRefed<SVGAnimatedLength>
SVGEllipseElement::Rx()
{
return mLengthAttributes[RX].ToDOMAnimatedLength(this);
}
already_AddRefed<SVGAnimatedLength>
SVGEllipseElement::Ry()
{
return mLengthAttributes[RY].ToDOMAnimatedLength(this);
}
//----------------------------------------------------------------------
// nsSVGElement methods
/* virtual */ bool
SVGEllipseElement::HasValidDimensions() const
{
return mLengthAttributes[RX].IsExplicitlySet() &&
mLengthAttributes[RX].GetAnimValInSpecifiedUnits() > 0 &&
mLengthAttributes[RY].IsExplicitlySet() &&
mLengthAttributes[RY].GetAnimValInSpecifiedUnits() > 0;
}
nsSVGElement::LengthAttributesInfo
SVGEllipseElement::GetLengthInfo()
{
return LengthAttributesInfo(mLengthAttributes, sLengthInfo,
ArrayLength(sLengthInfo));
}
//----------------------------------------------------------------------
// nsSVGPathGeometryElement methods
bool
SVGEllipseElement::GetGeometryBounds(Rect* aBounds,
const StrokeOptions& aStrokeOptions,
const Matrix& aToBoundsSpace,
const Matrix* aToNonScalingStrokeSpace)
{
float x, y, rx, ry;
GetAnimatedLengthValues(&x, &y, &rx, &ry, nullptr);
if (rx <= 0.f || ry <= 0.f) {
// Rendering of the element is disabled
*aBounds = Rect(aToBoundsSpace.TransformPoint(Point(x, y)), Size());
return true;
}
if (aToBoundsSpace.IsRectilinear()) {
// Optimize the case where we can treat the ellipse as a rectangle and
// still get tight bounds.
if (aStrokeOptions.mLineWidth > 0.f) {
if (aToNonScalingStrokeSpace) {
if (aToNonScalingStrokeSpace->IsRectilinear()) {
MOZ_ASSERT(!aToNonScalingStrokeSpace->IsSingular());
Rect userBounds(x - rx, y - ry, 2 * rx, 2 * ry);
SVGContentUtils::RectilinearGetStrokeBounds(
userBounds, aToBoundsSpace, *aToNonScalingStrokeSpace,
aStrokeOptions.mLineWidth, aBounds);
return true;
}
return false;
}
rx += aStrokeOptions.mLineWidth / 2.f;
ry += aStrokeOptions.mLineWidth / 2.f;
}
Rect rect(x - rx, y - ry, 2 * rx, 2 * ry);
*aBounds = aToBoundsSpace.TransformBounds(rect);
return true;
}
return false;
}
already_AddRefed<Path>
SVGEllipseElement::BuildPath(PathBuilder* aBuilder)
{
float x, y, rx, ry;
GetAnimatedLengthValues(&x, &y, &rx, &ry, nullptr);
if (rx <= 0.0f || ry <= 0.0f) {
return nullptr;
}
EllipseToBezier(aBuilder, Point(x, y), Size(rx, ry));
return aBuilder->Finish();
}
} // namespace dom
} // namespace mozilla
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