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 "core/svg/SVGAnimatedAngle.h"
22
23#include "bindings/v8/ExceptionStatePlaceholder.h"
24#include "core/svg/SVGAnimateElement.h"
25#include "core/svg/SVGMarkerElement.h"
26
27namespace WebCore {
28
29SVGAnimatedAngleAnimator::SVGAnimatedAngleAnimator(SVGAnimationElement* animationElement, SVGElement* contextElement)
30    : SVGAnimatedTypeAnimator(AnimatedAngle, animationElement, contextElement)
31{
32}
33
34PassOwnPtr<SVGAnimatedType> SVGAnimatedAngleAnimator::constructFromString(const String& string)
35{
36    OwnPtr<SVGAnimatedType> animatedType = SVGAnimatedType::createAngleAndEnumeration(new pair<SVGAngle, unsigned>);
37    pair<SVGAngle, unsigned>& animatedPair = animatedType->angleAndEnumeration();
38
39    SVGAngle angle;
40    SVGMarkerOrientType orientType = SVGPropertyTraits<SVGMarkerOrientType>::fromString(string,  angle);
41    if (orientType > 0)
42        animatedPair.second = orientType;
43    if (orientType == SVGMarkerOrientAngle)
44        animatedPair.first = angle;
45
46    return animatedType.release();
47}
48
49PassOwnPtr<SVGAnimatedType> SVGAnimatedAngleAnimator::startAnimValAnimation(const SVGElementAnimatedPropertyList& animatedTypes)
50{
51    return SVGAnimatedType::createAngleAndEnumeration(constructFromBaseValues<SVGAnimatedAngle, SVGAnimatedEnumeration>(animatedTypes));
52}
53
54void SVGAnimatedAngleAnimator::stopAnimValAnimation(const SVGElementAnimatedPropertyList& animatedTypes)
55{
56    stopAnimValAnimationForTypes<SVGAnimatedAngle, SVGAnimatedEnumeration>(animatedTypes);
57}
58
59void SVGAnimatedAngleAnimator::resetAnimValToBaseVal(const SVGElementAnimatedPropertyList& animatedTypes, SVGAnimatedType* type)
60{
61    resetFromBaseValues<SVGAnimatedAngle, SVGAnimatedEnumeration>(animatedTypes, type, &SVGAnimatedType::angleAndEnumeration);
62}
63
64void SVGAnimatedAngleAnimator::animValWillChange(const SVGElementAnimatedPropertyList& animatedTypes)
65{
66    animValWillChangeForTypes<SVGAnimatedAngle, SVGAnimatedEnumeration>(animatedTypes);
67}
68
69void SVGAnimatedAngleAnimator::animValDidChange(const SVGElementAnimatedPropertyList& animatedTypes)
70{
71    animValDidChangeForTypes<SVGAnimatedAngle, SVGAnimatedEnumeration>(animatedTypes);
72}
73
74void SVGAnimatedAngleAnimator::addAnimatedTypes(SVGAnimatedType* from, SVGAnimatedType* to)
75{
76    ASSERT(from->type() == AnimatedAngle);
77    ASSERT(from->type() == to->type());
78
79    const pair<SVGAngle, unsigned>& fromAngleAndEnumeration = from->angleAndEnumeration();
80    pair<SVGAngle, unsigned>& toAngleAndEnumeration = to->angleAndEnumeration();
81    // Only respect by animations, if from and by are both specified in angles (and not eg. 'auto').
82    if (fromAngleAndEnumeration.second != toAngleAndEnumeration.second || fromAngleAndEnumeration.second != SVGMarkerOrientAngle)
83        return;
84    const SVGAngle& fromAngle = fromAngleAndEnumeration.first;
85    SVGAngle& toAngle = toAngleAndEnumeration.first;
86    toAngle.setValue(toAngle.value() + fromAngle.value());
87}
88
89void SVGAnimatedAngleAnimator::calculateAnimatedValue(float percentage, unsigned repeatCount, SVGAnimatedType* from, SVGAnimatedType* to, SVGAnimatedType* toAtEndOfDuration, SVGAnimatedType* animated)
90{
91    ASSERT(m_animationElement);
92    ASSERT(m_contextElement);
93
94    const pair<SVGAngle, unsigned>& fromAngleAndEnumeration = m_animationElement->animationMode() == ToAnimation ? animated->angleAndEnumeration() : from->angleAndEnumeration();
95    const pair<SVGAngle, unsigned>& toAngleAndEnumeration = to->angleAndEnumeration();
96    const pair<SVGAngle, unsigned>& toAtEndOfDurationAngleAndEnumeration = toAtEndOfDuration->angleAndEnumeration();
97    pair<SVGAngle, unsigned>& animatedAngleAndEnumeration = animated->angleAndEnumeration();
98
99    if (fromAngleAndEnumeration.second != toAngleAndEnumeration.second) {
100        // Animating from eg. auto to 90deg, or auto to 90deg.
101        if (fromAngleAndEnumeration.second == SVGMarkerOrientAngle) {
102            // Animating from an angle value to eg. 'auto' - this disabled additive as 'auto' is a keyword..
103            if (toAngleAndEnumeration.second == SVGMarkerOrientAuto) {
104                if (percentage < 0.5f) {
105                    animatedAngleAndEnumeration.first = fromAngleAndEnumeration.first;
106                    animatedAngleAndEnumeration.second = SVGMarkerOrientAngle;
107                    return;
108                }
109                animatedAngleAndEnumeration.first.setValue(0);
110                animatedAngleAndEnumeration.second = SVGMarkerOrientAuto;
111                return;
112            }
113            animatedAngleAndEnumeration.first.setValue(0);
114            animatedAngleAndEnumeration.second = SVGMarkerOrientUnknown;
115            return;
116        }
117    }
118
119    // From 'auto' to 'auto'.
120    if (fromAngleAndEnumeration.second == SVGMarkerOrientAuto) {
121        animatedAngleAndEnumeration.first.setValue(0);
122        animatedAngleAndEnumeration.second = SVGMarkerOrientAuto;
123        return;
124    }
125
126    // If the enumeration value is not angle or auto, its unknown.
127    if (fromAngleAndEnumeration.second != SVGMarkerOrientAngle) {
128        animatedAngleAndEnumeration.first.setValue(0);
129        animatedAngleAndEnumeration.second = SVGMarkerOrientUnknown;
130        return;
131    }
132
133    // Regular from angle to angle animation, with all features like additive etc.
134    animatedAngleAndEnumeration.second = SVGMarkerOrientAngle;
135
136    SVGAngle& animatedSVGAngle = animatedAngleAndEnumeration.first;
137    const SVGAngle& toAtEndOfDurationSVGAngle = toAtEndOfDurationAngleAndEnumeration.first;
138    float animatedAngle = animatedSVGAngle.value();
139    m_animationElement->animateAdditiveNumber(percentage, repeatCount, fromAngleAndEnumeration.first.value(), toAngleAndEnumeration.first.value(), toAtEndOfDurationSVGAngle.value(), animatedAngle);
140    animatedSVGAngle.setValue(animatedAngle);
141}
142
143float SVGAnimatedAngleAnimator::calculateDistance(const String& fromString, const String& toString)
144{
145    SVGAngle from = SVGAngle();
146    from.setValueAsString(fromString, ASSERT_NO_EXCEPTION);
147    SVGAngle to = SVGAngle();
148    to.setValueAsString(toString, ASSERT_NO_EXCEPTION);
149    return fabsf(to.value() - from.value());
150}
151
152}
153