| /* |
| * Copyright (C) 2004, 2005 Nikolas Zimmermann <zimmermann@kde.org> |
| * Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@kde.org> |
| * Copyright (C) 2007 Eric Seidel <eric@webkit.org> |
| * Copyright (C) 2008 Apple Inc. All rights reserved. |
| * Copyright (C) 2009 Cameron McCormack <cam@mcc.id.au> |
| * Copyright (C) Research In Motion Limited 2010. All rights reserved. |
| * |
| * 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_ANIMATION) |
| #include "SVGAnimationElement.h" |
| |
| #include "Attribute.h" |
| #include "CSSComputedStyleDeclaration.h" |
| #include "CSSParser.h" |
| #include "CSSPropertyNames.h" |
| #include "Color.h" |
| #include "Document.h" |
| #include "Event.h" |
| #include "EventListener.h" |
| #include "FloatConversion.h" |
| #include "HTMLNames.h" |
| #include "PlatformString.h" |
| #include "SVGElementInstance.h" |
| #include "SVGNames.h" |
| #include "SVGParserUtilities.h" |
| #include "SVGStyledElement.h" |
| #include "SVGURIReference.h" |
| #include "SVGUseElement.h" |
| #include "XLinkNames.h" |
| #include <wtf/StdLibExtras.h> |
| |
| using namespace std; |
| |
| namespace WebCore { |
| |
| // Animated property definitions |
| DEFINE_ANIMATED_BOOLEAN(SVGAnimationElement, SVGNames::externalResourcesRequiredAttr, ExternalResourcesRequired, externalResourcesRequired) |
| |
| SVGAnimationElement::SVGAnimationElement(const QualifiedName& tagName, Document* document) |
| : SVGSMILElement(tagName, document) |
| , m_animationValid(false) |
| { |
| } |
| |
| static void parseKeyTimes(const String& parse, Vector<float>& result, bool verifyOrder) |
| { |
| result.clear(); |
| Vector<String> parseList; |
| parse.split(';', parseList); |
| for (unsigned n = 0; n < parseList.size(); ++n) { |
| String timeString = parseList[n]; |
| bool ok; |
| float time = timeString.toFloat(&ok); |
| if (!ok || time < 0 || time > 1) |
| goto fail; |
| if (verifyOrder) { |
| if (!n) { |
| if (time) |
| goto fail; |
| } else if (time < result.last()) |
| goto fail; |
| } |
| result.append(time); |
| } |
| return; |
| fail: |
| result.clear(); |
| } |
| |
| static void parseKeySplines(const String& parse, Vector<UnitBezier>& result) |
| { |
| result.clear(); |
| if (parse.isEmpty()) |
| return; |
| const UChar* cur = parse.characters(); |
| const UChar* end = cur + parse.length(); |
| |
| skipOptionalSpaces(cur, end); |
| |
| bool delimParsed = false; |
| while (cur < end) { |
| delimParsed = false; |
| float posA = 0; |
| if (!parseNumber(cur, end, posA)) { |
| result.clear(); |
| return; |
| } |
| |
| float posB = 0; |
| if (!parseNumber(cur, end, posB)) { |
| result.clear(); |
| return; |
| } |
| |
| float posC = 0; |
| if (!parseNumber(cur, end, posC)) { |
| result.clear(); |
| return; |
| } |
| |
| float posD = 0; |
| if (!parseNumber(cur, end, posD, false)) { |
| result.clear(); |
| return; |
| } |
| |
| skipOptionalSpaces(cur, end); |
| |
| if (cur < end && *cur == ';') { |
| delimParsed = true; |
| cur++; |
| } |
| skipOptionalSpaces(cur, end); |
| |
| result.append(UnitBezier(posA, posB, posC, posD)); |
| } |
| if (!(cur == end && !delimParsed)) |
| result.clear(); |
| } |
| |
| void SVGAnimationElement::parseMappedAttribute(Attribute* attr) |
| { |
| if (attr->name() == SVGNames::valuesAttr) |
| attr->value().string().split(';', m_values); |
| else if (attr->name() == SVGNames::keyTimesAttr) |
| parseKeyTimes(attr->value(), m_keyTimes, true); |
| else if (attr->name() == SVGNames::keyPointsAttr && hasTagName(SVGNames::animateMotionTag)) { |
| // This is specified to be an animateMotion attribute only but it is simpler to put it here |
| // where the other timing calculatations are. |
| parseKeyTimes(attr->value(), m_keyPoints, false); |
| } else if (attr->name() == SVGNames::keySplinesAttr) |
| parseKeySplines(attr->value(), m_keySplines); |
| else { |
| if (SVGTests::parseMappedAttribute(attr)) |
| return; |
| if (SVGExternalResourcesRequired::parseMappedAttribute(attr)) |
| return; |
| SVGSMILElement::parseMappedAttribute(attr); |
| } |
| } |
| |
| void SVGAnimationElement::attributeChanged(Attribute* attr, bool preserveDecls) |
| { |
| // Assumptions may not hold after an attribute change. |
| m_animationValid = false; |
| SVGSMILElement::attributeChanged(attr, preserveDecls); |
| } |
| |
| void SVGAnimationElement::synchronizeProperty(const QualifiedName& attrName) |
| { |
| SVGSMILElement::synchronizeProperty(attrName); |
| |
| if (attrName == anyQName()) { |
| synchronizeExternalResourcesRequired(); |
| SVGTests::synchronizeProperties(this, attrName); |
| return; |
| } |
| |
| if (SVGExternalResourcesRequired::isKnownAttribute(attrName)) |
| synchronizeExternalResourcesRequired(); |
| else if (SVGTests::isKnownAttribute(attrName)) |
| SVGTests::synchronizeProperties(this, attrName); |
| } |
| |
| float SVGAnimationElement::getStartTime() const |
| { |
| return narrowPrecisionToFloat(intervalBegin().value()); |
| } |
| |
| float SVGAnimationElement::getCurrentTime() const |
| { |
| return narrowPrecisionToFloat(elapsed().value()); |
| } |
| |
| float SVGAnimationElement::getSimpleDuration(ExceptionCode&) const |
| { |
| return narrowPrecisionToFloat(simpleDuration().value()); |
| } |
| |
| void SVGAnimationElement::beginElement() |
| { |
| beginElementAt(0); |
| } |
| |
| void SVGAnimationElement::beginElementAt(float offset) |
| { |
| addBeginTime(elapsed() + offset); |
| } |
| |
| void SVGAnimationElement::endElement() |
| { |
| endElementAt(0); |
| } |
| |
| void SVGAnimationElement::endElementAt(float offset) |
| { |
| addEndTime(elapsed() + offset); |
| } |
| |
| SVGAnimationElement::AnimationMode SVGAnimationElement::animationMode() const |
| { |
| // http://www.w3.org/TR/2001/REC-smil-animation-20010904/#AnimFuncValues |
| if (hasTagName(SVGNames::setTag)) |
| return ToAnimation; |
| if (!animationPath().isEmpty()) |
| return PathAnimation; |
| if (hasAttribute(SVGNames::valuesAttr)) |
| return ValuesAnimation; |
| if (!toValue().isEmpty()) |
| return fromValue().isEmpty() ? ToAnimation : FromToAnimation; |
| if (!byValue().isEmpty()) |
| return fromValue().isEmpty() ? ByAnimation : FromByAnimation; |
| return NoAnimation; |
| } |
| |
| SVGAnimationElement::CalcMode SVGAnimationElement::calcMode() const |
| { |
| DEFINE_STATIC_LOCAL(const AtomicString, discrete, ("discrete")); |
| DEFINE_STATIC_LOCAL(const AtomicString, linear, ("linear")); |
| DEFINE_STATIC_LOCAL(const AtomicString, paced, ("paced")); |
| DEFINE_STATIC_LOCAL(const AtomicString, spline, ("spline")); |
| const AtomicString& value = getAttribute(SVGNames::calcModeAttr); |
| if (value == discrete) |
| return CalcModeDiscrete; |
| if (value == linear) |
| return CalcModeLinear; |
| if (value == paced) |
| return CalcModePaced; |
| if (value == spline) |
| return CalcModeSpline; |
| return hasTagName(SVGNames::animateMotionTag) ? CalcModePaced : CalcModeLinear; |
| } |
| |
| SVGAnimationElement::AttributeType SVGAnimationElement::attributeType() const |
| { |
| DEFINE_STATIC_LOCAL(const AtomicString, css, ("CSS")); |
| DEFINE_STATIC_LOCAL(const AtomicString, xml, ("XML")); |
| const AtomicString& value = getAttribute(SVGNames::attributeTypeAttr); |
| if (value == css) |
| return AttributeTypeCSS; |
| if (value == xml) |
| return AttributeTypeXML; |
| return AttributeTypeAuto; |
| } |
| |
| String SVGAnimationElement::toValue() const |
| { |
| return getAttribute(SVGNames::toAttr); |
| } |
| |
| String SVGAnimationElement::byValue() const |
| { |
| return getAttribute(SVGNames::byAttr); |
| } |
| |
| String SVGAnimationElement::fromValue() const |
| { |
| return getAttribute(SVGNames::fromAttr); |
| } |
| |
| bool SVGAnimationElement::isAdditive() const |
| { |
| DEFINE_STATIC_LOCAL(const AtomicString, sum, ("sum")); |
| const AtomicString& value = getAttribute(SVGNames::additiveAttr); |
| return value == sum || animationMode() == ByAnimation; |
| } |
| |
| bool SVGAnimationElement::isAccumulated() const |
| { |
| DEFINE_STATIC_LOCAL(const AtomicString, sum, ("sum")); |
| const AtomicString& value = getAttribute(SVGNames::accumulateAttr); |
| return value == sum && animationMode() != ToAnimation; |
| } |
| |
| bool SVGAnimationElement::isTargetAttributeCSSProperty(SVGElement* targetElement, const QualifiedName& attributeName) |
| { |
| ASSERT(targetElement); |
| if (!targetElement->isStyled()) |
| return false; |
| |
| return SVGStyledElement::isAnimatableCSSProperty(attributeName); |
| } |
| |
| void SVGAnimationElement::setTargetAttributeAnimatedValue(const String& value) |
| { |
| if (!hasValidAttributeType()) |
| return; |
| SVGElement* targetElement = this->targetElement(); |
| QualifiedName attributeName = this->attributeName(); |
| if (!targetElement || attributeName == anyQName() || value.isNull()) |
| return; |
| |
| // We don't want the instance tree to get rebuild. Instances are updated in the loop below. |
| if (targetElement->isStyled()) |
| static_cast<SVGStyledElement*>(targetElement)->setInstanceUpdatesBlocked(true); |
| |
| bool attributeIsCSSProperty = isTargetAttributeCSSProperty(targetElement, attributeName); |
| // Stop animation, if attributeType is set to CSS by the user, but the attribute itself is not a CSS property. |
| if (!attributeIsCSSProperty && attributeType() == AttributeTypeCSS) |
| return; |
| |
| ExceptionCode ec; |
| if (attributeIsCSSProperty) { |
| // FIXME: This should set the override style, not the inline style. |
| // Sadly override styles are not yet implemented. |
| targetElement->style()->setProperty(attributeName.localName(), value, "", ec); |
| } else { |
| // FIXME: This should set the 'presentation' value, not the actual |
| // attribute value. Whatever that means in practice. |
| targetElement->setAttribute(attributeName, value, ec); |
| } |
| |
| if (targetElement->isStyled()) |
| static_cast<SVGStyledElement*>(targetElement)->setInstanceUpdatesBlocked(false); |
| |
| // If the target element is used in an <use> instance tree, update that as well. |
| const HashSet<SVGElementInstance*>& instances = targetElement->instancesForElement(); |
| const HashSet<SVGElementInstance*>::const_iterator end = instances.end(); |
| for (HashSet<SVGElementInstance*>::const_iterator it = instances.begin(); it != end; ++it) { |
| SVGElement* shadowTreeElement = (*it)->shadowTreeElement(); |
| if (!shadowTreeElement) |
| continue; |
| if (attributeIsCSSProperty) |
| shadowTreeElement->style()->setProperty(attributeName.localName(), value, "", ec); |
| else |
| shadowTreeElement->setAttribute(attributeName, value, ec); |
| (*it)->correspondingUseElement()->setNeedsStyleRecalc(); |
| } |
| } |
| |
| void SVGAnimationElement::calculateKeyTimesForCalcModePaced() |
| { |
| ASSERT(calcMode() == CalcModePaced); |
| ASSERT(animationMode() == ValuesAnimation); |
| |
| unsigned valuesCount = m_values.size(); |
| ASSERT(valuesCount > 1); |
| Vector<float> keyTimesForPaced; |
| float totalDistance = 0; |
| keyTimesForPaced.append(0); |
| for (unsigned n = 0; n < valuesCount - 1; ++n) { |
| // Distance in any units |
| float distance = calculateDistance(m_values[n], m_values[n + 1]); |
| if (distance < 0) |
| return; |
| totalDistance += distance; |
| keyTimesForPaced.append(distance); |
| } |
| if (!totalDistance) |
| return; |
| |
| // Normalize. |
| for (unsigned n = 1; n < keyTimesForPaced.size() - 1; ++n) |
| keyTimesForPaced[n] = keyTimesForPaced[n - 1] + keyTimesForPaced[n] / totalDistance; |
| keyTimesForPaced[keyTimesForPaced.size() - 1] = 1; |
| |
| // Use key times calculated based on pacing instead of the user provided ones. |
| m_keyTimes.swap(keyTimesForPaced); |
| } |
| |
| static inline double solveEpsilon(double duration) { return 1 / (200 * duration); } |
| |
| unsigned SVGAnimationElement::calculateKeyTimesIndex(float percent) const |
| { |
| unsigned index; |
| unsigned keyTimesCount = m_keyTimes.size(); |
| for (index = 1; index < keyTimesCount; ++index) { |
| if (m_keyTimes[index] >= percent) |
| break; |
| } |
| return --index; |
| } |
| |
| float SVGAnimationElement::calculatePercentForSpline(float percent, unsigned splineIndex) const |
| { |
| ASSERT(calcMode() == CalcModeSpline); |
| ASSERT(splineIndex < m_keySplines.size()); |
| UnitBezier bezier = m_keySplines[splineIndex]; |
| SMILTime duration = simpleDuration(); |
| if (!duration.isFinite()) |
| duration = 100.0; |
| return narrowPrecisionToFloat(bezier.solve(percent, solveEpsilon(duration.value()))); |
| } |
| |
| float SVGAnimationElement::calculatePercentFromKeyPoints(float percent) const |
| { |
| ASSERT(!m_keyPoints.isEmpty()); |
| ASSERT(calcMode() != CalcModePaced); |
| ASSERT(m_keyTimes.size() > 1); |
| ASSERT(m_keyPoints.size() == m_keyTimes.size()); |
| |
| unsigned index = calculateKeyTimesIndex(percent); |
| float fromPercent = m_keyTimes[index]; |
| float toPercent = m_keyTimes[index + 1]; |
| float fromKeyPoint = m_keyPoints[index]; |
| float toKeyPoint = m_keyPoints[index + 1]; |
| |
| if (calcMode() == CalcModeDiscrete) |
| return percent == 1 ? toKeyPoint : fromKeyPoint; |
| |
| float keyPointPercent = percent == 1 ? 1 : (percent - fromPercent) / (toPercent - fromPercent); |
| |
| if (calcMode() == CalcModeSpline) { |
| ASSERT(m_keySplines.size() == m_keyPoints.size() - 1); |
| keyPointPercent = calculatePercentForSpline(keyPointPercent, index); |
| } |
| return (toKeyPoint - fromKeyPoint) * keyPointPercent + fromKeyPoint; |
| } |
| |
| void SVGAnimationElement::currentValuesFromKeyPoints(float percent, float& effectivePercent, String& from, String& to) const |
| { |
| ASSERT(!m_keyPoints.isEmpty()); |
| ASSERT(m_keyPoints.size() == m_keyTimes.size()); |
| ASSERT(calcMode() != CalcModePaced); |
| effectivePercent = calculatePercentFromKeyPoints(percent); |
| unsigned index = effectivePercent == 1 ? m_values.size() - 2 : static_cast<unsigned>(effectivePercent * (m_values.size() - 1)); |
| from = m_values[index]; |
| to = m_values[index + 1]; |
| } |
| |
| void SVGAnimationElement::currentValuesForValuesAnimation(float percent, float& effectivePercent, String& from, String& to) const |
| { |
| unsigned valuesCount = m_values.size(); |
| ASSERT(m_animationValid); |
| ASSERT(valuesCount > 1); |
| |
| CalcMode calcMode = this->calcMode(); |
| if (!m_keyPoints.isEmpty() && calcMode != CalcModePaced) |
| return currentValuesFromKeyPoints(percent, effectivePercent, from, to); |
| |
| unsigned keyTimesCount = m_keyTimes.size(); |
| ASSERT(!keyTimesCount || valuesCount == keyTimesCount); |
| ASSERT(!keyTimesCount || (keyTimesCount > 1 && !m_keyTimes[0])); |
| |
| unsigned index = calculateKeyTimesIndex(percent); |
| if (calcMode == CalcModeDiscrete) { |
| if (!keyTimesCount) |
| index = percent == 1 ? valuesCount - 1 : static_cast<unsigned>(percent * valuesCount); |
| from = m_values[index]; |
| to = m_values[index]; |
| effectivePercent = 0; |
| return; |
| } |
| |
| float fromPercent; |
| float toPercent; |
| if (keyTimesCount) { |
| fromPercent = m_keyTimes[index]; |
| toPercent = m_keyTimes[index + 1]; |
| } else { |
| index = static_cast<unsigned>(percent * (valuesCount - 1)); |
| fromPercent = static_cast<float>(index) / (valuesCount - 1); |
| toPercent = static_cast<float>(index + 1) / (valuesCount - 1); |
| } |
| |
| if (index == valuesCount - 1) |
| --index; |
| from = m_values[index]; |
| to = m_values[index + 1]; |
| ASSERT(toPercent > fromPercent); |
| effectivePercent = percent == 1 ? 1 : (percent - fromPercent) / (toPercent - fromPercent); |
| |
| if (calcMode == CalcModeSpline) { |
| ASSERT(m_keySplines.size() == m_values.size() - 1); |
| effectivePercent = calculatePercentForSpline(effectivePercent, index); |
| } |
| } |
| |
| void SVGAnimationElement::startedActiveInterval() |
| { |
| m_animationValid = false; |
| |
| if (!hasValidAttributeType()) |
| return; |
| |
| // These validations are appropriate for all animation modes. |
| if (hasAttribute(SVGNames::keyPointsAttr) && m_keyPoints.size() != m_keyTimes.size()) |
| return; |
| |
| AnimationMode animationMode = this->animationMode(); |
| CalcMode calcMode = this->calcMode(); |
| if (calcMode == CalcModeSpline) { |
| unsigned splinesCount = m_keySplines.size() + 1; |
| if ((hasAttribute(SVGNames::keyPointsAttr) && m_keyPoints.size() != splinesCount) |
| || (animationMode == ValuesAnimation && m_values.size() != splinesCount)) |
| return; |
| } |
| |
| String from = fromValue(); |
| String to = toValue(); |
| String by = byValue(); |
| if (animationMode == NoAnimation) |
| return; |
| if (animationMode == FromToAnimation) |
| m_animationValid = calculateFromAndToValues(from, to); |
| else if (animationMode == ToAnimation) { |
| // For to-animations the from value is the current accumulated value from lower priority animations. |
| // The value is not static and is determined during the animation. |
| m_animationValid = calculateFromAndToValues(String(), to); |
| } else if (animationMode == FromByAnimation) |
| m_animationValid = calculateFromAndByValues(from, by); |
| else if (animationMode == ByAnimation) |
| m_animationValid = calculateFromAndByValues(String(), by); |
| else if (animationMode == ValuesAnimation) { |
| m_animationValid = m_values.size() > 1 |
| && (calcMode == CalcModePaced || !hasAttribute(SVGNames::keyTimesAttr) || hasAttribute(SVGNames::keyPointsAttr) || (m_values.size() == m_keyTimes.size())) |
| && (calcMode == CalcModeDiscrete || !m_keyTimes.size() || m_keyTimes.last() == 1) |
| && (calcMode != CalcModeSpline || ((m_keySplines.size() && (m_keySplines.size() == m_values.size() - 1)) || m_keySplines.size() == m_keyPoints.size() - 1)) |
| && (!hasAttribute(SVGNames::keyPointsAttr) || (m_keyTimes.size() > 1 && m_keyTimes.size() == m_keyPoints.size())); |
| if (calcMode == CalcModePaced && m_animationValid) |
| calculateKeyTimesForCalcModePaced(); |
| } else if (animationMode == PathAnimation) |
| m_animationValid = calcMode == CalcModePaced || !hasAttribute(SVGNames::keyPointsAttr) || (m_keyTimes.size() > 1 && m_keyTimes.size() == m_keyPoints.size()); |
| } |
| |
| void SVGAnimationElement::updateAnimation(float percent, unsigned repeat, SVGSMILElement* resultElement) |
| { |
| if (!m_animationValid) |
| return; |
| |
| float effectivePercent; |
| CalcMode mode = calcMode(); |
| if (animationMode() == ValuesAnimation) { |
| String from; |
| String to; |
| currentValuesForValuesAnimation(percent, effectivePercent, from, to); |
| if (from != m_lastValuesAnimationFrom || to != m_lastValuesAnimationTo) { |
| m_animationValid = calculateFromAndToValues(from, to); |
| if (!m_animationValid) |
| return; |
| m_lastValuesAnimationFrom = from; |
| m_lastValuesAnimationTo = to; |
| } |
| } else if (!m_keyPoints.isEmpty() && mode != CalcModePaced) |
| effectivePercent = calculatePercentFromKeyPoints(percent); |
| else if (m_keyPoints.isEmpty() && mode == CalcModeSpline && m_keyTimes.size() > 1) |
| effectivePercent = calculatePercentForSpline(percent, calculateKeyTimesIndex(percent)); |
| else |
| effectivePercent = percent; |
| |
| calculateAnimatedValue(effectivePercent, repeat, resultElement); |
| } |
| |
| void SVGAnimationElement::endedActiveInterval() |
| { |
| } |
| |
| } |
| #endif // ENABLE(SVG_ANIMATION) |
| |
