1/*
2 * Copyright (C) 2019 Apple 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
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#pragma once
27
28#include "SVGAnimationAdditiveFunction.h"
29
30namespace WebCore {
31
32template<typename ListType>
33class SVGAnimationAdditiveListFunction : public SVGAnimationAdditiveFunction {
34public:
35 template<typename... Arguments>
36 SVGAnimationAdditiveListFunction(AnimationMode animationMode, CalcMode calcMode, bool isAccumulated, bool isAdditive, Arguments&&... arguments)
37 : SVGAnimationAdditiveFunction(animationMode, calcMode, isAccumulated, isAdditive)
38 , m_from(ListType::create(std::forward<Arguments>(arguments)...))
39 , m_to(ListType::create(std::forward<Arguments>(arguments)...))
40 , m_toAtEndOfDuration(ListType::create(std::forward<Arguments>(arguments)...))
41 {
42 }
43
44protected:
45 const Ref<ListType>& toAtEndOfDuration() const { return !m_toAtEndOfDuration->isEmpty() ? m_toAtEndOfDuration : m_to; }
46
47 bool adjustAnimatedList(AnimationMode animationMode, float percentage, RefPtr<ListType>& animated, bool resizeAnimatedIfNeeded = true)
48 {
49 if (!m_to->numberOfItems())
50 return false;
51
52 if (m_from->numberOfItems() && m_from->size() != m_to->size()) {
53 if (percentage >= 0.5)
54 *animated = m_to;
55 else if (animationMode != AnimationMode::To)
56 *animated = m_from;
57 return false;
58 }
59
60 if (resizeAnimatedIfNeeded && animated->size() < m_to->size())
61 animated->resize(m_to->size());
62 return true;
63 }
64
65 Ref<ListType> m_from;
66 Ref<ListType> m_to;
67 Ref<ListType> m_toAtEndOfDuration;
68};
69
70}
71