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/*
* Copyright (C) Research In Motion Limited 2011. 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"
#include "core/svg/SVGAnimatedLength.h"
#include "bindings/v8/ExceptionStatePlaceholder.h"
#include "core/svg/SVGAnimateElement.h"
#include "core/svg/SVGAnimatedNumber.h"
namespace WebCore {
SVGAnimatedLengthAnimator::SVGAnimatedLengthAnimator(SVGAnimationElement* animationElement, SVGElement* contextElement)
: SVGAnimatedTypeAnimator(AnimatedLength, animationElement, contextElement)
, m_lengthMode(SVGLength::lengthModeForAnimatedLengthAttribute(animationElement->attributeName()))
{
}
static inline SVGLength& sharedSVGLength(SVGLengthMode mode, const String& valueAsString)
{
DEFINE_STATIC_LOCAL(SVGLength, sharedLength, ());
sharedLength.setValueAsString(valueAsString, mode, ASSERT_NO_EXCEPTION);
return sharedLength;
}
PassOwnPtr<SVGAnimatedType> SVGAnimatedLengthAnimator::constructFromString(const String& string)
{
return SVGAnimatedType::createLength(new SVGLength(m_lengthMode, string));
}
PassOwnPtr<SVGAnimatedType> SVGAnimatedLengthAnimator::startAnimValAnimation(const SVGElementAnimatedPropertyList& animatedTypes)
{
return SVGAnimatedType::createLength(constructFromBaseValue<SVGAnimatedLength>(animatedTypes));
}
void SVGAnimatedLengthAnimator::stopAnimValAnimation(const SVGElementAnimatedPropertyList& animatedTypes)
{
stopAnimValAnimationForType<SVGAnimatedLength>(animatedTypes);
}
void SVGAnimatedLengthAnimator::resetAnimValToBaseVal(const SVGElementAnimatedPropertyList& animatedTypes, SVGAnimatedType* type)
{
resetFromBaseValue<SVGAnimatedLength>(animatedTypes, type, &SVGAnimatedType::length);
}
void SVGAnimatedLengthAnimator::animValWillChange(const SVGElementAnimatedPropertyList& animatedTypes)
{
animValWillChangeForType<SVGAnimatedLength>(animatedTypes);
}
void SVGAnimatedLengthAnimator::animValDidChange(const SVGElementAnimatedPropertyList& animatedTypes)
{
animValDidChangeForType<SVGAnimatedLength>(animatedTypes);
}
void SVGAnimatedLengthAnimator::addAnimatedTypes(SVGAnimatedType* from, SVGAnimatedType* to)
{
ASSERT(from->type() == AnimatedLength);
ASSERT(from->type() == to->type());
SVGLengthContext lengthContext(m_contextElement);
const SVGLength& fromLength = from->length();
SVGLength& toLength = to->length();
toLength.setValue(toLength.value(lengthContext) + fromLength.value(lengthContext), lengthContext, ASSERT_NO_EXCEPTION);
}
static SVGLength parseLengthFromString(SVGAnimationElement* animationElement, const String& string)
{
return sharedSVGLength(SVGLength::lengthModeForAnimatedLengthAttribute(animationElement->attributeName()), string);
}
void SVGAnimatedLengthAnimator::calculateAnimatedValue(float percentage, unsigned repeatCount, SVGAnimatedType* from, SVGAnimatedType* to, SVGAnimatedType* toAtEndOfDuration, SVGAnimatedType* animated)
{
ASSERT(m_animationElement);
ASSERT(m_contextElement);
SVGLength fromSVGLength = m_animationElement->animationMode() == ToAnimation ? animated->length() : from->length();
SVGLength toSVGLength = to->length();
const SVGLength& toAtEndOfDurationSVGLength = toAtEndOfDuration->length();
SVGLength& animatedSVGLength = animated->length();
// Apply CSS inheritance rules.
m_animationElement->adjustForInheritance<SVGLength>(parseLengthFromString, m_animationElement->fromPropertyValueType(), fromSVGLength, m_contextElement);
m_animationElement->adjustForInheritance<SVGLength>(parseLengthFromString, m_animationElement->toPropertyValueType(), toSVGLength, m_contextElement);
SVGLengthContext lengthContext(m_contextElement);
float animatedNumber = animatedSVGLength.value(lengthContext);
SVGLengthType unitType = percentage < 0.5 ? fromSVGLength.unitType() : toSVGLength.unitType();
m_animationElement->animateAdditiveNumber(percentage, repeatCount, fromSVGLength.value(lengthContext), toSVGLength.value(lengthContext), toAtEndOfDurationSVGLength.value(lengthContext), animatedNumber);
animatedSVGLength.setValue(lengthContext, animatedNumber, m_lengthMode, unitType, ASSERT_NO_EXCEPTION);
}
float SVGAnimatedLengthAnimator::calculateDistance(const String& fromString, const String& toString)
{
ASSERT(m_animationElement);
ASSERT(m_contextElement);
SVGLengthMode lengthMode = SVGLength::lengthModeForAnimatedLengthAttribute(m_animationElement->attributeName());
SVGLength from = SVGLength(lengthMode, fromString);
SVGLength to = SVGLength(lengthMode, toString);
SVGLengthContext lengthContext(m_contextElement);
return fabsf(to.value(lengthContext) - from.value(lengthContext));
}
}
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