1/*
2 * Copyright (C) 2018-2019 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 "SVGAnimationFunction.h"
29
30namespace WebCore {
31
32class SVGAnimationAdditiveFunction : public SVGAnimationFunction {
33public:
34 SVGAnimationAdditiveFunction(AnimationMode animationMode, CalcMode calcMode, bool isAccumulated, bool isAdditive)
35 : SVGAnimationFunction(animationMode)
36 , m_calcMode(calcMode)
37 , m_isAccumulated(isAccumulated)
38 , m_isAdditive(isAdditive)
39 {
40 }
41
42 void setFromAndByValues(SVGElement* targetElement, const String& from, const String& by) override
43 {
44 setFromAndToValues(targetElement, from, by);
45 addFromAndToValues(targetElement);
46 }
47
48 void setToAtEndOfDurationValue(const String&) override
49 {
50 ASSERT_NOT_REACHED();
51 }
52
53protected:
54 float animate(float progress, unsigned repeatCount, float from, float to, float toAtEndOfDuration, float animated)
55 {
56 float number;
57 if (m_calcMode == CalcMode::Discrete)
58 number = progress < 0.5 ? from : to;
59 else
60 number = (to - from) * progress + from;
61
62 if (m_isAccumulated && repeatCount)
63 number += toAtEndOfDuration * repeatCount;
64
65 if (m_isAdditive && m_animationMode != AnimationMode::To)
66 number += animated;
67
68 return number;
69 }
70
71 CalcMode m_calcMode;
72 bool m_isAccumulated;
73 bool m_isAdditive;
74};
75
76}
77