blob: 376621ab047c763fd9bb2b4e43e4cf339a441bbb [file] [log] [blame]
/*
* Copyright (C) 2004, 2005, 2006, 2008 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@kde.org>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "core/svg/SVGCircleElement.h"
#include "core/css/StyleChangeReason.h"
#include "core/layout/svg/LayoutSVGEllipse.h"
#include "core/svg/SVGLength.h"
namespace blink {
inline SVGCircleElement::SVGCircleElement(Document& document)
: SVGGeometryElement(SVGNames::circleTag, document),
cx_(SVGAnimatedLength::Create(this,
SVGNames::cxAttr,
SVGLength::Create(SVGLengthMode::kWidth),
CSSPropertyCx)),
cy_(SVGAnimatedLength::Create(this,
SVGNames::cyAttr,
SVGLength::Create(SVGLengthMode::kHeight),
CSSPropertyCy)),
r_(SVGAnimatedLength::Create(this,
SVGNames::rAttr,
SVGLength::Create(SVGLengthMode::kOther),
CSSPropertyR)) {
AddToPropertyMap(cx_);
AddToPropertyMap(cy_);
AddToPropertyMap(r_);
}
void SVGCircleElement::Trace(blink::Visitor* visitor) {
visitor->Trace(cx_);
visitor->Trace(cy_);
visitor->Trace(r_);
SVGGeometryElement::Trace(visitor);
}
DEFINE_NODE_FACTORY(SVGCircleElement)
Path SVGCircleElement::AsPath() const {
Path path;
SVGLengthContext length_context(this);
DCHECK(GetLayoutObject());
const ComputedStyle& style = GetLayoutObject()->StyleRef();
const SVGComputedStyle& svg_style = style.SvgStyle();
float r = length_context.ValueForLength(svg_style.R(), style,
SVGLengthMode::kOther);
if (r > 0) {
FloatPoint center(length_context.ResolveLengthPair(svg_style.Cx(),
svg_style.Cy(), style));
FloatSize radii(r, r);
path.AddEllipse(FloatRect(center - radii, radii.ScaledBy(2)));
}
return path;
}
void SVGCircleElement::CollectStyleForPresentationAttribute(
const QualifiedName& name,
const AtomicString& value,
MutableCSSPropertyValueSet* style) {
SVGAnimatedPropertyBase* property = PropertyFromAttribute(name);
if (property == cx_) {
AddPropertyToPresentationAttributeStyle(style, property->CssPropertyId(),
&cx_->CssValue());
} else if (property == cy_) {
AddPropertyToPresentationAttributeStyle(style, property->CssPropertyId(),
&cy_->CssValue());
} else if (property == r_) {
AddPropertyToPresentationAttributeStyle(style, property->CssPropertyId(),
&r_->CssValue());
} else {
SVGGeometryElement::CollectStyleForPresentationAttribute(name, value,
style);
}
}
void SVGCircleElement::SvgAttributeChanged(const QualifiedName& attr_name) {
if (attr_name == SVGNames::rAttr || attr_name == SVGNames::cxAttr ||
attr_name == SVGNames::cyAttr) {
SVGElement::InvalidationGuard invalidation_guard(this);
InvalidateSVGPresentationAttributeStyle();
SetNeedsStyleRecalc(kLocalStyleChange,
StyleChangeReasonForTracing::FromAttribute(attr_name));
UpdateRelativeLengthsInformation();
LayoutSVGShape* layout_object = ToLayoutSVGShape(this->GetLayoutObject());
if (!layout_object)
return;
layout_object->SetNeedsShapeUpdate();
MarkForLayoutAndParentResourceInvalidation(layout_object);
return;
}
SVGGraphicsElement::SvgAttributeChanged(attr_name);
}
bool SVGCircleElement::SelfHasRelativeLengths() const {
return cx_->CurrentValue()->IsRelative() ||
cy_->CurrentValue()->IsRelative() || r_->CurrentValue()->IsRelative();
}
LayoutObject* SVGCircleElement::CreateLayoutObject(const ComputedStyle&) {
return new LayoutSVGEllipse(this);
}
} // namespace blink