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/animatable/AnimatableClipPathOperation.h"
33
34namespace blink {
35
36bool AnimatableClipPathOperation::usesDefaultInterpolationWith(const AnimatableValue* value) const
37{
38    const AnimatableClipPathOperation* toOperation = toAnimatableClipPathOperation(value);
39
40    if (m_operation->type() != ClipPathOperation::SHAPE || toOperation->m_operation->type() != ClipPathOperation::SHAPE)
41        return true;
42
43    const BasicShape* fromShape = toShapeClipPathOperation(clipPathOperation())->basicShape();
44    const BasicShape* toShape = toShapeClipPathOperation(toOperation->clipPathOperation())->basicShape();
45
46    return !fromShape->canBlend(toShape);
47}
48
49PassRefPtrWillBeRawPtr<AnimatableValue> AnimatableClipPathOperation::interpolateTo(const AnimatableValue* value, double fraction) const
50{
51    if (usesDefaultInterpolationWith(value))
52        return defaultInterpolateTo(this, value, fraction);
53
54    const AnimatableClipPathOperation* toOperation = toAnimatableClipPathOperation(value);
55    const BasicShape* fromShape = toShapeClipPathOperation(clipPathOperation())->basicShape();
56    const BasicShape* toShape = toShapeClipPathOperation(toOperation->clipPathOperation())->basicShape();
57
58    return AnimatableClipPathOperation::create(ShapeClipPathOperation::create(toShape->blend(fromShape, fraction)).get());
59}
60
61bool AnimatableClipPathOperation::equalTo(const AnimatableValue* value) const
62{
63    const ClipPathOperation* operation = toAnimatableClipPathOperation(value)->m_operation.get();
64    return m_operation == operation || (m_operation && operation && *m_operation == *operation);
65}
66
67}
68