SVGAnimateMotionElement.cpp [plain text]
#include "config.h"
#include "SVGAnimateMotionElement.h"
#include "AffineTransform.h"
#include "Attribute.h"
#include "ElementIterator.h"
#include "RenderObject.h"
#include "RenderSVGResource.h"
#include "SVGElementInstance.h"
#include "SVGImageElement.h"
#include "SVGMPathElement.h"
#include "SVGNames.h"
#include "SVGParserUtilities.h"
#include "SVGPathData.h"
#include "SVGPathElement.h"
#include "SVGPathUtilities.h"
#include "SVGTransformList.h"
#include <wtf/MathExtras.h>
#include <wtf/NeverDestroyed.h>
#include <wtf/StdLibExtras.h>
#include <wtf/text/StringView.h>
namespace WebCore {
using namespace SVGNames;
inline SVGAnimateMotionElement::SVGAnimateMotionElement(const QualifiedName& tagName, Document& document)
: SVGAnimationElement(tagName, document)
, m_hasToPointAtEndOfDuration(false)
{
setCalcMode(CalcModePaced);
ASSERT(hasTagName(animateMotionTag));
}
PassRefPtr<SVGAnimateMotionElement> SVGAnimateMotionElement::create(const QualifiedName& tagName, Document& document)
{
return adoptRef(new SVGAnimateMotionElement(tagName, document));
}
bool SVGAnimateMotionElement::hasValidAttributeType()
{
SVGElement* targetElement = this->targetElement();
if (!targetElement)
return false;
if (!targetElement->isSVGGraphicsElement())
return false;
if (targetElement->hasTagName(gTag)
|| targetElement->hasTagName(defsTag)
|| targetElement->hasTagName(useTag)
|| isSVGImageElement(targetElement)
|| targetElement->hasTagName(switchTag)
|| targetElement->hasTagName(pathTag)
|| targetElement->hasTagName(rectTag)
|| targetElement->hasTagName(circleTag)
|| targetElement->hasTagName(ellipseTag)
|| targetElement->hasTagName(lineTag)
|| targetElement->hasTagName(polylineTag)
|| targetElement->hasTagName(polygonTag)
|| targetElement->hasTagName(textTag)
|| targetElement->hasTagName(clipPathTag)
|| targetElement->hasTagName(maskTag)
|| targetElement->hasTagName(SVGNames::aTag)
|| targetElement->hasTagName(foreignObjectTag)
)
return true;
return false;
}
bool SVGAnimateMotionElement::hasValidAttributeName()
{
return true;
}
bool SVGAnimateMotionElement::isSupportedAttribute(const QualifiedName& attrName)
{
static NeverDestroyed<HashSet<QualifiedName>> supportedAttributes;
if (supportedAttributes.get().isEmpty())
supportedAttributes.get().add(SVGNames::pathAttr);
return supportedAttributes.get().contains<SVGAttributeHashTranslator>(attrName);
}
void SVGAnimateMotionElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
{
if (!isSupportedAttribute(name)) {
SVGAnimationElement::parseAttribute(name, value);
return;
}
if (name == SVGNames::pathAttr) {
m_path = Path();
buildPathFromString(value, m_path);
updateAnimationPath();
return;
}
ASSERT_NOT_REACHED();
}
SVGAnimateMotionElement::RotateMode SVGAnimateMotionElement::rotateMode() const
{
DEPRECATED_DEFINE_STATIC_LOCAL(const AtomicString, autoVal, ("auto", AtomicString::ConstructFromLiteral));
DEPRECATED_DEFINE_STATIC_LOCAL(const AtomicString, autoReverse, ("auto-reverse", AtomicString::ConstructFromLiteral));
const AtomicString& rotate = getAttribute(SVGNames::rotateAttr);
if (rotate == autoVal)
return RotateAuto;
if (rotate == autoReverse)
return RotateAutoReverse;
return RotateAngle;
}
void SVGAnimateMotionElement::updateAnimationPath()
{
m_animationPath = Path();
bool foundMPath = false;
for (auto& mPath : childrenOfType<SVGMPathElement>(*this)) {
SVGPathElement* pathElement = mPath.pathElement();
if (pathElement) {
updatePathFromGraphicsElement(pathElement, m_animationPath);
foundMPath = true;
break;
}
}
if (!foundMPath && fastHasAttribute(SVGNames::pathAttr))
m_animationPath = m_path;
updateAnimationMode();
}
static bool parsePoint(const String& s, FloatPoint& point)
{
if (s.isEmpty())
return false;
auto upconvertedCharacters = StringView(s).upconvertedCharacters();
const UChar* cur = upconvertedCharacters;
const UChar* end = cur + s.length();
if (!skipOptionalSVGSpaces(cur, end))
return false;
float x = 0;
if (!parseNumber(cur, end, x))
return false;
float y = 0;
if (!parseNumber(cur, end, y))
return false;
point = FloatPoint(x, y);
return !skipOptionalSVGSpaces(cur, end);
}
void SVGAnimateMotionElement::resetAnimatedType()
{
if (!hasValidAttributeType())
return;
SVGElement* targetElement = this->targetElement();
if (!targetElement)
return;
if (AffineTransform* transform = targetElement->supplementalTransform())
transform->makeIdentity();
}
void SVGAnimateMotionElement::clearAnimatedType(SVGElement* targetElement)
{
if (!targetElement)
return;
if (AffineTransform* transform = targetElement->supplementalTransform())
transform->makeIdentity();
}
bool SVGAnimateMotionElement::calculateToAtEndOfDurationValue(const String& toAtEndOfDurationString)
{
parsePoint(toAtEndOfDurationString, m_toPointAtEndOfDuration);
m_hasToPointAtEndOfDuration = true;
return true;
}
bool SVGAnimateMotionElement::calculateFromAndToValues(const String& fromString, const String& toString)
{
m_hasToPointAtEndOfDuration = false;
parsePoint(fromString, m_fromPoint);
parsePoint(toString, m_toPoint);
return true;
}
bool SVGAnimateMotionElement::calculateFromAndByValues(const String& fromString, const String& byString)
{
m_hasToPointAtEndOfDuration = false;
if (animationMode() == ByAnimation && !isAdditive())
return false;
parsePoint(fromString, m_fromPoint);
FloatPoint byPoint;
parsePoint(byString, byPoint);
m_toPoint = FloatPoint(m_fromPoint.x() + byPoint.x(), m_fromPoint.y() + byPoint.y());
return true;
}
void SVGAnimateMotionElement::buildTransformForProgress(AffineTransform* transform, float percentage)
{
ASSERT(!m_animationPath.isEmpty());
bool ok = false;
float positionOnPath = m_animationPath.length() * percentage;
FloatPoint position = m_animationPath.pointAtLength(positionOnPath, ok);
if (!ok)
return;
transform->translate(position.x(), position.y());
RotateMode rotateMode = this->rotateMode();
if (rotateMode != RotateAuto && rotateMode != RotateAutoReverse)
return;
float angle = m_animationPath.normalAngleAtLength(positionOnPath, ok);
if (rotateMode == RotateAutoReverse)
angle += 180;
transform->rotate(angle);
}
void SVGAnimateMotionElement::calculateAnimatedValue(float percentage, unsigned repeatCount, SVGSMILElement*)
{
SVGElement* targetElement = this->targetElement();
if (!targetElement)
return;
AffineTransform* transform = targetElement->supplementalTransform();
if (!transform)
return;
if (RenderObject* targetRenderer = targetElement->renderer())
targetRenderer->setNeedsTransformUpdate();
if (!isAdditive())
transform->makeIdentity();
if (animationMode() != PathAnimation) {
FloatPoint toPointAtEndOfDuration = m_toPoint;
if (isAccumulated() && repeatCount && m_hasToPointAtEndOfDuration)
toPointAtEndOfDuration = m_toPointAtEndOfDuration;
float animatedX = 0;
animateAdditiveNumber(percentage, repeatCount, m_fromPoint.x(), m_toPoint.x(), toPointAtEndOfDuration.x(), animatedX);
float animatedY = 0;
animateAdditiveNumber(percentage, repeatCount, m_fromPoint.y(), m_toPoint.y(), toPointAtEndOfDuration.y(), animatedY);
transform->translate(animatedX, animatedY);
return;
}
buildTransformForProgress(transform, percentage);
if (isAccumulated() && repeatCount) {
for (unsigned i = 0; i < repeatCount; ++i)
buildTransformForProgress(transform, 1);
}
}
void SVGAnimateMotionElement::applyResultsToTarget()
{
SVGElement* targetElement = this->targetElement();
if (!targetElement)
return;
if (RenderElement* renderer = targetElement->renderer())
RenderSVGResource::markForLayoutAndParentResourceInvalidation(*renderer);
AffineTransform* t = targetElement->supplementalTransform();
if (!t)
return;
for (auto* instance : targetElement->instancesForElement()) {
SVGElement* shadowTreeElement = instance->shadowTreeElement();
ASSERT(shadowTreeElement);
AffineTransform* transform = shadowTreeElement->supplementalTransform();
if (!transform)
continue;
transform->setMatrix(t->a(), t->b(), t->c(), t->d(), t->e(), t->f());
if (RenderElement* renderer = shadowTreeElement->renderer()) {
renderer->setNeedsTransformUpdate();
RenderSVGResource::markForLayoutAndParentResourceInvalidation(*renderer);
}
}
}
float SVGAnimateMotionElement::calculateDistance(const String& fromString, const String& toString)
{
FloatPoint from;
FloatPoint to;
if (!parsePoint(fromString, from))
return -1;
if (!parsePoint(toString, to))
return -1;
FloatSize diff = to - from;
return sqrtf(diff.width() * diff.width() + diff.height() * diff.height());
}
void SVGAnimateMotionElement::updateAnimationMode()
{
if (!m_animationPath.isEmpty())
setAnimationMode(PathAnimation);
else
SVGAnimationElement::updateAnimationMode();
}
}