blob: fc21bf76ed89c6af84b0d944d1d64296404aed73 [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 "config.h"
#if ENABLE(SVG)
#include "SVGPathElement.h"
#include "Attribute.h"
#include "RenderSVGPath.h"
#include "RenderSVGResource.h"
#include "SVGElementInstance.h"
#include "SVGMPathElement.h"
#include "SVGNames.h"
#include "SVGPathSegArcAbs.h"
#include "SVGPathSegArcRel.h"
#include "SVGPathSegClosePath.h"
#include "SVGPathSegCurvetoCubicAbs.h"
#include "SVGPathSegCurvetoCubicRel.h"
#include "SVGPathSegCurvetoCubicSmoothAbs.h"
#include "SVGPathSegCurvetoCubicSmoothRel.h"
#include "SVGPathSegCurvetoQuadraticAbs.h"
#include "SVGPathSegCurvetoQuadraticRel.h"
#include "SVGPathSegCurvetoQuadraticSmoothAbs.h"
#include "SVGPathSegCurvetoQuadraticSmoothRel.h"
#include "SVGPathSegLinetoAbs.h"
#include "SVGPathSegLinetoHorizontalAbs.h"
#include "SVGPathSegLinetoHorizontalRel.h"
#include "SVGPathSegLinetoRel.h"
#include "SVGPathSegLinetoVerticalAbs.h"
#include "SVGPathSegLinetoVerticalRel.h"
#include "SVGPathSegList.h"
#include "SVGPathSegListBuilder.h"
#include "SVGPathSegListPropertyTearOff.h"
#include "SVGPathSegMovetoAbs.h"
#include "SVGPathSegMovetoRel.h"
#include "SVGPathUtilities.h"
#include "SVGSVGElement.h"
namespace WebCore {
// Define custom animated property 'd'.
const SVGPropertyInfo* SVGPathElement::dPropertyInfo()
{
static const SVGPropertyInfo* s_propertyInfo = 0;
if (!s_propertyInfo) {
s_propertyInfo = new SVGPropertyInfo(AnimatedPath,
PropertyIsReadWrite,
SVGNames::dAttr,
SVGNames::dAttr.localName(),
&SVGPathElement::synchronizeD,
&SVGPathElement::lookupOrCreateDWrapper);
}
return s_propertyInfo;
}
// Animated property definitions
DEFINE_ANIMATED_NUMBER(SVGPathElement, SVGNames::pathLengthAttr, PathLength, pathLength)
DEFINE_ANIMATED_BOOLEAN(SVGPathElement, SVGNames::externalResourcesRequiredAttr, ExternalResourcesRequired, externalResourcesRequired)
BEGIN_REGISTER_ANIMATED_PROPERTIES(SVGPathElement)
REGISTER_LOCAL_ANIMATED_PROPERTY(d)
REGISTER_LOCAL_ANIMATED_PROPERTY(pathLength)
REGISTER_LOCAL_ANIMATED_PROPERTY(externalResourcesRequired)
REGISTER_PARENT_ANIMATED_PROPERTIES(SVGGraphicsElement)
END_REGISTER_ANIMATED_PROPERTIES
inline SVGPathElement::SVGPathElement(const QualifiedName& tagName, Document& document)
: SVGGraphicsElement(tagName, document)
, m_pathByteStream(std::make_unique<SVGPathByteStream>())
, m_pathSegList(PathSegUnalteredRole)
, m_isAnimValObserved(false)
{
ASSERT(hasTagName(SVGNames::pathTag));
registerAnimatedPropertiesForSVGPathElement();
}
PassRefPtr<SVGPathElement> SVGPathElement::create(const QualifiedName& tagName, Document& document)
{
return adoptRef(new SVGPathElement(tagName, document));
}
float SVGPathElement::getTotalLength()
{
float totalLength = 0;
getTotalLengthOfSVGPathByteStream(pathByteStream(), totalLength);
return totalLength;
}
SVGPoint SVGPathElement::getPointAtLength(float length)
{
SVGPoint point;
getPointAtLengthOfSVGPathByteStream(pathByteStream(), length, point);
return point;
}
unsigned SVGPathElement::getPathSegAtLength(float length)
{
unsigned pathSeg = 0;
getSVGPathSegAtLengthFromSVGPathByteStream(pathByteStream(), length, pathSeg);
return pathSeg;
}
PassRefPtr<SVGPathSegClosePath> SVGPathElement::createSVGPathSegClosePath(SVGPathSegRole role)
{
return SVGPathSegClosePath::create(this, role);
}
PassRefPtr<SVGPathSegMovetoAbs> SVGPathElement::createSVGPathSegMovetoAbs(float x, float y, SVGPathSegRole role)
{
return SVGPathSegMovetoAbs::create(this, role, x, y);
}
PassRefPtr<SVGPathSegMovetoRel> SVGPathElement::createSVGPathSegMovetoRel(float x, float y, SVGPathSegRole role)
{
return SVGPathSegMovetoRel::create(this, role, x, y);
}
PassRefPtr<SVGPathSegLinetoAbs> SVGPathElement::createSVGPathSegLinetoAbs(float x, float y, SVGPathSegRole role)
{
return SVGPathSegLinetoAbs::create(this, role, x, y);
}
PassRefPtr<SVGPathSegLinetoRel> SVGPathElement::createSVGPathSegLinetoRel(float x, float y, SVGPathSegRole role)
{
return SVGPathSegLinetoRel::create(this, role, x, y);
}
PassRefPtr<SVGPathSegCurvetoCubicAbs> SVGPathElement::createSVGPathSegCurvetoCubicAbs(float x, float y, float x1, float y1, float x2, float y2, SVGPathSegRole role)
{
return SVGPathSegCurvetoCubicAbs::create(this, role, x, y, x1, y1, x2, y2);
}
PassRefPtr<SVGPathSegCurvetoCubicRel> SVGPathElement::createSVGPathSegCurvetoCubicRel(float x, float y, float x1, float y1, float x2, float y2, SVGPathSegRole role)
{
return SVGPathSegCurvetoCubicRel::create(this, role, x, y, x1, y1, x2, y2);
}
PassRefPtr<SVGPathSegCurvetoQuadraticAbs> SVGPathElement::createSVGPathSegCurvetoQuadraticAbs(float x, float y, float x1, float y1, SVGPathSegRole role)
{
return SVGPathSegCurvetoQuadraticAbs::create(this, role, x, y, x1, y1);
}
PassRefPtr<SVGPathSegCurvetoQuadraticRel> SVGPathElement::createSVGPathSegCurvetoQuadraticRel(float x, float y, float x1, float y1, SVGPathSegRole role)
{
return SVGPathSegCurvetoQuadraticRel::create(this, role, x, y, x1, y1);
}
PassRefPtr<SVGPathSegArcAbs> SVGPathElement::createSVGPathSegArcAbs(float x, float y, float r1, float r2, float angle, bool largeArcFlag, bool sweepFlag, SVGPathSegRole role)
{
return SVGPathSegArcAbs::create(this, role, x, y, r1, r2, angle, largeArcFlag, sweepFlag);
}
PassRefPtr<SVGPathSegArcRel> SVGPathElement::createSVGPathSegArcRel(float x, float y, float r1, float r2, float angle, bool largeArcFlag, bool sweepFlag, SVGPathSegRole role)
{
return SVGPathSegArcRel::create(this, role, x, y, r1, r2, angle, largeArcFlag, sweepFlag);
}
PassRefPtr<SVGPathSegLinetoHorizontalAbs> SVGPathElement::createSVGPathSegLinetoHorizontalAbs(float x, SVGPathSegRole role)
{
return SVGPathSegLinetoHorizontalAbs::create(this, role, x);
}
PassRefPtr<SVGPathSegLinetoHorizontalRel> SVGPathElement::createSVGPathSegLinetoHorizontalRel(float x, SVGPathSegRole role)
{
return SVGPathSegLinetoHorizontalRel::create(this, role, x);
}
PassRefPtr<SVGPathSegLinetoVerticalAbs> SVGPathElement::createSVGPathSegLinetoVerticalAbs(float y, SVGPathSegRole role)
{
return SVGPathSegLinetoVerticalAbs::create(this, role, y);
}
PassRefPtr<SVGPathSegLinetoVerticalRel> SVGPathElement::createSVGPathSegLinetoVerticalRel(float y, SVGPathSegRole role)
{
return SVGPathSegLinetoVerticalRel::create(this, role, y);
}
PassRefPtr<SVGPathSegCurvetoCubicSmoothAbs> SVGPathElement::createSVGPathSegCurvetoCubicSmoothAbs(float x, float y, float x2, float y2, SVGPathSegRole role)
{
return SVGPathSegCurvetoCubicSmoothAbs::create(this, role, x, y, x2, y2);
}
PassRefPtr<SVGPathSegCurvetoCubicSmoothRel> SVGPathElement::createSVGPathSegCurvetoCubicSmoothRel(float x, float y, float x2, float y2, SVGPathSegRole role)
{
return SVGPathSegCurvetoCubicSmoothRel::create(this, role, x, y, x2, y2);
}
PassRefPtr<SVGPathSegCurvetoQuadraticSmoothAbs> SVGPathElement::createSVGPathSegCurvetoQuadraticSmoothAbs(float x, float y, SVGPathSegRole role)
{
return SVGPathSegCurvetoQuadraticSmoothAbs::create(this, role, x, y);
}
PassRefPtr<SVGPathSegCurvetoQuadraticSmoothRel> SVGPathElement::createSVGPathSegCurvetoQuadraticSmoothRel(float x, float y, SVGPathSegRole role)
{
return SVGPathSegCurvetoQuadraticSmoothRel::create(this, role, x, y);
}
bool SVGPathElement::isSupportedAttribute(const QualifiedName& attrName)
{
DEFINE_STATIC_LOCAL(HashSet<QualifiedName>, supportedAttributes, ());
if (supportedAttributes.isEmpty()) {
SVGLangSpace::addSupportedAttributes(supportedAttributes);
SVGExternalResourcesRequired::addSupportedAttributes(supportedAttributes);
supportedAttributes.add(SVGNames::dAttr);
supportedAttributes.add(SVGNames::pathLengthAttr);
}
return supportedAttributes.contains<SVGAttributeHashTranslator>(attrName);
}
void SVGPathElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
{
if (!isSupportedAttribute(name)) {
SVGGraphicsElement::parseAttribute(name, value);
return;
}
if (name == SVGNames::dAttr) {
if (!buildSVGPathByteStreamFromString(value, m_pathByteStream.get(), UnalteredParsing))
document().accessSVGExtensions()->reportError("Problem parsing d=\"" + value + "\"");
return;
}
if (name == SVGNames::pathLengthAttr) {
setPathLengthBaseValue(value.toFloat());
if (pathLengthBaseValue() < 0)
document().accessSVGExtensions()->reportError("A negative value for path attribute <pathLength> is not allowed");
return;
}
if (SVGLangSpace::parseAttribute(name, value))
return;
if (SVGExternalResourcesRequired::parseAttribute(name, value))
return;
ASSERT_NOT_REACHED();
}
void SVGPathElement::svgAttributeChanged(const QualifiedName& attrName)
{
if (!isSupportedAttribute(attrName)) {
SVGGraphicsElement::svgAttributeChanged(attrName);
return;
}
SVGElementInstance::InvalidationGuard invalidationGuard(this);
RenderSVGPath* renderer = toRenderSVGPath(this->renderer());
if (attrName == SVGNames::dAttr) {
if (m_pathSegList.shouldSynchronize && !SVGAnimatedProperty::lookupWrapper<SVGPathElement, SVGAnimatedPathSegListPropertyTearOff>(this, dPropertyInfo())->isAnimating()) {
SVGPathSegList newList(PathSegUnalteredRole);
buildSVGPathSegListFromByteStream(m_pathByteStream.get(), this, newList, UnalteredParsing);
m_pathSegList.value = newList;
}
if (renderer)
renderer->setNeedsShapeUpdate();
invalidateMPathDependencies();
}
if (renderer)
RenderSVGResource::markForLayoutAndParentResourceInvalidation(renderer);
}
void SVGPathElement::invalidateMPathDependencies()
{
// <mpath> can only reference <path> but this dependency is not handled in
// markForLayoutAndParentResourceInvalidation so we update any mpath dependencies manually.
if (HashSet<SVGElement*>* dependencies = document().accessSVGExtensions()->setOfElementsReferencingTarget(this)) {
HashSet<SVGElement*>::iterator end = dependencies->end();
for (HashSet<SVGElement*>::iterator it = dependencies->begin(); it != end; ++it) {
if ((*it)->hasTagName(SVGNames::mpathTag))
toSVGMPathElement(*it)->targetPathChanged();
}
}
}
Node::InsertionNotificationRequest SVGPathElement::insertedInto(ContainerNode& rootParent)
{
SVGGraphicsElement::insertedInto(rootParent);
invalidateMPathDependencies();
return InsertionDone;
}
void SVGPathElement::removedFrom(ContainerNode& rootParent)
{
SVGGraphicsElement::removedFrom(rootParent);
invalidateMPathDependencies();
}
SVGPathByteStream* SVGPathElement::pathByteStream() const
{
SVGAnimatedProperty* property = SVGAnimatedProperty::lookupWrapper<SVGPathElement, SVGAnimatedPathSegListPropertyTearOff>(this, dPropertyInfo());
if (!property || !property->isAnimating())
return m_pathByteStream.get();
return static_cast<SVGAnimatedPathSegListPropertyTearOff*>(property)->animatedPathByteStream();
}
PassRefPtr<SVGAnimatedProperty> SVGPathElement::lookupOrCreateDWrapper(SVGElement* contextElement)
{
ASSERT(contextElement);
SVGPathElement* ownerType = toSVGPathElement(contextElement);
if (SVGAnimatedProperty* property = SVGAnimatedProperty::lookupWrapper<SVGPathElement, SVGAnimatedPathSegListPropertyTearOff>(ownerType, dPropertyInfo()))
return property;
// Build initial SVGPathSegList.
buildSVGPathSegListFromByteStream(ownerType->m_pathByteStream.get(), ownerType, ownerType->m_pathSegList.value, UnalteredParsing);
return SVGAnimatedProperty::lookupOrCreateWrapper<SVGPathElement, SVGAnimatedPathSegListPropertyTearOff, SVGPathSegList>
(ownerType, dPropertyInfo(), ownerType->m_pathSegList.value);
}
void SVGPathElement::synchronizeD(SVGElement* contextElement)
{
ASSERT(contextElement);
SVGPathElement* ownerType = toSVGPathElement(contextElement);
if (!ownerType->m_pathSegList.shouldSynchronize)
return;
ownerType->m_pathSegList.synchronize(ownerType, dPropertyInfo()->attributeName, ownerType->m_pathSegList.value.valueAsString());
}
SVGPathSegListPropertyTearOff* SVGPathElement::pathSegList()
{
m_pathSegList.shouldSynchronize = true;
return static_cast<SVGPathSegListPropertyTearOff*>(static_pointer_cast<SVGAnimatedPathSegListPropertyTearOff>(lookupOrCreateDWrapper(this))->baseVal());
}
SVGPathSegListPropertyTearOff* SVGPathElement::normalizedPathSegList()
{
// FIXME: https://bugs.webkit.org/show_bug.cgi?id=15412 - Implement normalized path segment lists!
return 0;
}
SVGPathSegListPropertyTearOff* SVGPathElement::animatedPathSegList()
{
m_pathSegList.shouldSynchronize = true;
m_isAnimValObserved = true;
return static_cast<SVGPathSegListPropertyTearOff*>(static_pointer_cast<SVGAnimatedPathSegListPropertyTearOff>(lookupOrCreateDWrapper(this))->animVal());
}
SVGPathSegListPropertyTearOff* SVGPathElement::animatedNormalizedPathSegList()
{
// FIXME: https://bugs.webkit.org/show_bug.cgi?id=15412 - Implement normalized path segment lists!
return 0;
}
void SVGPathElement::pathSegListChanged(SVGPathSegRole role, ListModification listModification)
{
switch (role) {
case PathSegNormalizedRole:
// FIXME: https://bugs.webkit.org/show_bug.cgi?id=15412 - Implement normalized path segment lists!
break;
case PathSegUnalteredRole:
if (listModification == ListModificationAppend) {
ASSERT(!m_pathSegList.value.isEmpty());
appendSVGPathByteStreamFromSVGPathSeg(m_pathSegList.value.last(), m_pathByteStream.get(), UnalteredParsing);
} else
buildSVGPathByteStreamFromSVGPathSegList(m_pathSegList.value, m_pathByteStream.get(), UnalteredParsing);
break;
case PathSegUndefinedRole:
return;
}
invalidateSVGAttributes();
RenderSVGPath* renderer = toRenderSVGPath(this->renderer());
if (!renderer)
return;
renderer->setNeedsShapeUpdate();
RenderSVGResource::markForLayoutAndParentResourceInvalidation(renderer);
}
FloatRect SVGPathElement::getBBox(StyleUpdateStrategy styleUpdateStrategy)
{
if (styleUpdateStrategy == AllowStyleUpdate)
document().updateLayoutIgnorePendingStylesheets();
RenderSVGPath* renderer = toRenderSVGPath(this->renderer());
// FIXME: Eventually we should support getBBox for detached elements.
if (!renderer)
return FloatRect();
return renderer->path().boundingRect();
}
RenderElement* SVGPathElement::createRenderer(PassRef<RenderStyle> style)
{
// By default, any subclass is expected to do path-based drawing
return new RenderSVGPath(*this, std::move(style));
}
}
#endif // ENABLE(SVG)