Add WTF::move()
[WebKit-https.git] / Source / WebCore / svg / SVGAnimatedPath.cpp
1 /*
2  * Copyright (C) Research In Motion Limited 2011, 2012. All rights reserved.
3  *
4  * This library is free software; you can redistribute it and/or
5  * modify it under the terms of the GNU Library General Public
6  * License as published by the Free Software Foundation; either
7  * version 2 of the License, or (at your option) any later version.
8  *
9  * This library is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12  * Library General Public License for more details.
13  *
14  * You should have received a copy of the GNU Library General Public License
15  * along with this library; see the file COPYING.LIB.  If not, write to
16  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
17  * Boston, MA 02110-1301, USA.
18  */
19
20 #include "config.h"
21 #include "SVGAnimatedPath.h"
22
23 #include "SVGAnimateElement.h"
24 #include "SVGAnimatedPathSegListPropertyTearOff.h"
25 #include "SVGPathUtilities.h"
26
27 namespace WebCore {
28
29 SVGAnimatedPathAnimator::SVGAnimatedPathAnimator(SVGAnimationElement* animationElement, SVGElement* contextElement)
30     : SVGAnimatedTypeAnimator(AnimatedPath, animationElement, contextElement)
31 {
32 }
33
34 std::unique_ptr<SVGAnimatedType> SVGAnimatedPathAnimator::constructFromString(const String& string)
35 {
36     auto byteStream = std::make_unique<SVGPathByteStream>();
37     buildSVGPathByteStreamFromString(string, byteStream.get(), UnalteredParsing);
38     return SVGAnimatedType::createPath(WTF::move(byteStream));
39 }
40
41 std::unique_ptr<SVGAnimatedType> SVGAnimatedPathAnimator::startAnimValAnimation(const SVGElementAnimatedPropertyList& animatedTypes)
42 {
43     ASSERT(animatedTypes.size() >= 1);
44     SVGAnimatedPathSegListPropertyTearOff* property = castAnimatedPropertyToActualType<SVGAnimatedPathSegListPropertyTearOff>(animatedTypes[0].properties[0].get());
45     const SVGPathSegList& baseValue = property->currentBaseValue();
46
47     // Build initial path byte stream.
48     auto byteStream = std::make_unique<SVGPathByteStream>();
49     buildSVGPathByteStreamFromSVGPathSegList(baseValue, byteStream.get(), UnalteredParsing);
50
51     Vector<RefPtr<SVGAnimatedPathSegListPropertyTearOff>> result;
52
53     SVGElementAnimatedPropertyList::const_iterator end = animatedTypes.end();
54     for (SVGElementAnimatedPropertyList::const_iterator it = animatedTypes.begin(); it != end; ++it)
55         result.append(castAnimatedPropertyToActualType<SVGAnimatedPathSegListPropertyTearOff>(it->properties[0].get()));
56
57     SVGElementInstance::InstanceUpdateBlocker blocker(property->contextElement());
58
59     size_t resultSize = result.size();
60     for (size_t i = 0; i < resultSize; ++i)
61         result[i]->animationStarted(byteStream.get(), &baseValue);
62
63     return SVGAnimatedType::createPath(WTF::move(byteStream));
64 }
65
66 void SVGAnimatedPathAnimator::stopAnimValAnimation(const SVGElementAnimatedPropertyList& animatedTypes)
67 {
68     stopAnimValAnimationForType<SVGAnimatedPathSegListPropertyTearOff>(animatedTypes);
69 }
70
71 void SVGAnimatedPathAnimator::resetAnimValToBaseVal(const SVGElementAnimatedPropertyList& animatedTypes, SVGAnimatedType* type)
72 {
73     ASSERT(animatedTypes.size() >= 1);
74     ASSERT(type);
75     ASSERT(type->type() == m_type);
76     const SVGPathSegList& baseValue = castAnimatedPropertyToActualType<SVGAnimatedPathSegListPropertyTearOff>(animatedTypes[0].properties[0].get())->currentBaseValue();
77     buildSVGPathByteStreamFromSVGPathSegList(baseValue, type->path(), UnalteredParsing);
78 }
79
80 void SVGAnimatedPathAnimator::animValWillChange(const SVGElementAnimatedPropertyList& animatedTypes)
81 {
82     animValWillChangeForType<SVGAnimatedPathSegListPropertyTearOff>(animatedTypes);
83 }
84
85 void SVGAnimatedPathAnimator::animValDidChange(const SVGElementAnimatedPropertyList& animatedTypes)
86 {
87     animValDidChangeForType<SVGAnimatedPathSegListPropertyTearOff>(animatedTypes);
88 }
89
90 void SVGAnimatedPathAnimator::addAnimatedTypes(SVGAnimatedType* from, SVGAnimatedType* to)
91 {
92     ASSERT(from->type() == AnimatedPath);
93     ASSERT(from->type() == to->type());
94
95     SVGPathByteStream* fromPath = from->path();
96     SVGPathByteStream* toPath = to->path();
97     unsigned fromPathSize = fromPath->size();
98     if (!fromPathSize || fromPathSize != toPath->size())
99         return;
100     addToSVGPathByteStream(toPath, fromPath);
101 }
102
103 void SVGAnimatedPathAnimator::calculateAnimatedValue(float percentage, unsigned repeatCount, SVGAnimatedType* from, SVGAnimatedType* to, SVGAnimatedType* toAtEndOfDuration, SVGAnimatedType* animated)
104 {
105     ASSERT(m_animationElement);
106     ASSERT(m_contextElement);
107
108     SVGPathByteStream* fromPath = from->path();
109     SVGPathByteStream* toPath = to->path();
110     SVGPathByteStream* toAtEndOfDurationPath = toAtEndOfDuration->path();
111     SVGPathByteStream* animatedPath = animated->path();
112
113     std::unique_ptr<SVGPathByteStream> underlyingPath;
114     bool isToAnimation = m_animationElement->animationMode() == ToAnimation;
115     if (isToAnimation) {
116         underlyingPath = animatedPath->copy();
117         fromPath = underlyingPath.get();
118     }
119
120     // Cache the current animated value before the buildAnimatedSVGPathByteStream() clears animatedPath.
121     std::unique_ptr<SVGPathByteStream> lastAnimatedPath;
122     if (!fromPath->size() || (m_animationElement->isAdditive() && !isToAnimation))
123         lastAnimatedPath = animatedPath->copy();
124
125     // Pass false to 'resizeAnimatedListIfNeeded' here, as the path animation is not a regular Vector<SVGXXX> type, but a SVGPathByteStream, that works differently.
126     if (!m_animationElement->adjustFromToListValues<SVGPathByteStream>(*fromPath, *toPath, *animatedPath, percentage, false))
127         return;
128
129     buildAnimatedSVGPathByteStream(fromPath, toPath, animatedPath, percentage);
130
131     // Handle additive='sum'.
132     if (lastAnimatedPath)
133         addToSVGPathByteStream(animatedPath, lastAnimatedPath.get());
134
135     // Handle accumulate='sum'.
136     if (m_animationElement->isAccumulated() && repeatCount)
137         addToSVGPathByteStream(animatedPath, toAtEndOfDurationPath, repeatCount);
138 }
139
140 float SVGAnimatedPathAnimator::calculateDistance(const String&, const String&)
141 {
142     // FIXME: Support paced animations.
143     return -1;
144 }
145
146 }