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      1 /*
      2  * Copyright (C) 2013 Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
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     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #include "config.h"
     32 #include "core/animation/AnimatableStrokeDasharrayList.h"
     33 
     34 #include "bindings/v8/ExceptionStatePlaceholder.h"
     35 #include "core/animation/AnimatableSVGLength.h"
     36 
     37 namespace WebCore {
     38 
     39 AnimatableStrokeDasharrayList::AnimatableStrokeDasharrayList(PassRefPtr<SVGLengthList> passLengths)
     40 {
     41     RefPtr<SVGLengthList> lengths = passLengths;
     42     SVGLengthList::ConstIterator it = lengths->begin();
     43     SVGLengthList::ConstIterator itEnd = lengths->end();
     44     for (; it != itEnd; ++it)
     45         m_values.append(AnimatableSVGLength::create(*it));
     46 }
     47 
     48 PassRefPtr<SVGLengthList> AnimatableStrokeDasharrayList::toSVGLengthList() const
     49 {
     50     RefPtr<SVGLengthList> lengths = SVGLengthList::create();
     51     for (size_t i = 0; i < m_values.size(); ++i) {
     52         RefPtr<SVGLength> length = toAnimatableSVGLength(m_values[i].get())->toSVGLength()->clone();
     53         if (length->valueInSpecifiedUnits() < 0)
     54             length->setValueInSpecifiedUnits(0);
     55         lengths->append(length);
     56     }
     57     return lengths.release();
     58 }
     59 
     60 bool AnimatableStrokeDasharrayList::usesDefaultInterpolationWith(const AnimatableValue* value) const
     61 {
     62     return false;
     63 }
     64 
     65 PassRefPtrWillBeRawPtr<AnimatableValue> AnimatableStrokeDasharrayList::interpolateTo(const AnimatableValue* value, double fraction) const
     66 {
     67     WillBeHeapVector<RefPtrWillBeMember<AnimatableValue> > from = m_values;
     68     WillBeHeapVector<RefPtrWillBeMember<AnimatableValue> > to = toAnimatableStrokeDasharrayList(value)->m_values;
     69 
     70     // The spec states that if the sum of all values is zero, this should be
     71     // treated like a value of 'none', which means that a solid line is drawn.
     72     // Since we animate to and from values of zero, treat a value of 'none' the
     73     // same. If both the two and from values are 'none', we return 'none'
     74     // rather than '0 0'.
     75     if (from.isEmpty() && to.isEmpty())
     76         return takeConstRef(this);
     77     if (from.isEmpty() || to.isEmpty()) {
     78         DEFINE_STATIC_REF_WILL_BE_PERSISTENT(AnimatableSVGLength, zeroPixels, (AnimatableSVGLength::create(SVGLength::create())));
     79         if (from.isEmpty()) {
     80             from.append(zeroPixels);
     81             from.append(zeroPixels);
     82         }
     83         if (to.isEmpty()) {
     84             to.append(zeroPixels);
     85             to.append(zeroPixels);
     86         }
     87     }
     88 
     89     WillBeHeapVector<RefPtrWillBeMember<AnimatableValue> > interpolatedValues;
     90     bool success = interpolateLists(from, to, fraction, interpolatedValues);
     91     ASSERT_UNUSED(success, success);
     92     return adoptRefWillBeNoop(new AnimatableStrokeDasharrayList(interpolatedValues));
     93 }
     94 
     95 void AnimatableStrokeDasharrayList::trace(Visitor* visitor)
     96 {
     97     AnimatableRepeatable::trace(visitor);
     98 }
     99 
    100 } // namespace WebCore
    101