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
13 * distribution.
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,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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
37namespace WebCore {
38
39AnimatableStrokeDasharrayList::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
48PassRefPtr<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
60bool AnimatableStrokeDasharrayList::usesDefaultInterpolationWith(const AnimatableValue* value) const
61{
62    return false;
63}
64
65PassRefPtrWillBeRawPtr<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
95void AnimatableStrokeDasharrayList::trace(Visitor* visitor)
96{
97    AnimatableRepeatable::trace(visitor);
98}
99
100} // namespace WebCore
101