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| 1 /* | 1 /* |
| 2 * Copyright (C) 2013 Google Inc. All rights reserved. | 2 * Copyright (C) 2013 Google Inc. All rights reserved. |
| 3 * | 3 * |
| 4 * Redistribution and use in source and binary forms, with or without | 4 * Redistribution and use in source and binary forms, with or without |
| 5 * modification, are permitted provided that the following conditions are | 5 * modification, are permitted provided that the following conditions are |
| 6 * met: | 6 * met: |
| 7 * | 7 * |
| 8 * * Redistributions of source code must retain the above copyright | 8 * * Redistributions of source code must retain the above copyright |
| 9 * notice, this list of conditions and the following disclaimer. | 9 * notice, this list of conditions and the following disclaimer. |
| 10 * * Redistributions in binary form must reproduce the above | 10 * * Redistributions in binary form must reproduce the above |
| (...skipping 16 matching lines...) Expand all Loading... |
| 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 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. | 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 29 */ | 29 */ |
| 30 | 30 |
| 31 #include "core/animation/animatable/AnimatableRepeatable.h" | 31 #include "core/animation/animatable/AnimatableRepeatable.h" |
| 32 | 32 |
| 33 #include "wtf/MathExtras.h" | 33 #include "wtf/MathExtras.h" |
| 34 | 34 |
| 35 namespace blink { | 35 namespace blink { |
| 36 | 36 |
| 37 bool AnimatableRepeatable::usesDefaultInterpolationWith( | |
| 38 const AnimatableValue* value) const { | |
| 39 const Vector<RefPtr<AnimatableValue>>& fromValues = m_values; | |
| 40 const Vector<RefPtr<AnimatableValue>>& toValues = | |
| 41 toAnimatableRepeatable(value)->m_values; | |
| 42 DCHECK(!fromValues.isEmpty() && !toValues.isEmpty()); | |
| 43 size_t size = lowestCommonMultiple(fromValues.size(), toValues.size()); | |
| 44 DCHECK_GT(size, 0U); | |
| 45 for (size_t i = 0; i < size; ++i) { | |
| 46 const AnimatableValue* from = fromValues[i % fromValues.size()].get(); | |
| 47 const AnimatableValue* to = toValues[i % toValues.size()].get(); | |
| 48 // Spec: If a pair of values cannot be interpolated, then the lists are not | |
| 49 // interpolable. | |
| 50 if (AnimatableValue::usesDefaultInterpolation(from, to)) | |
| 51 return true; | |
| 52 } | |
| 53 return false; | |
| 54 } | |
| 55 | |
| 56 bool AnimatableRepeatable::interpolateLists( | |
| 57 const Vector<RefPtr<AnimatableValue>>& fromValues, | |
| 58 const Vector<RefPtr<AnimatableValue>>& toValues, | |
| 59 double fraction, | |
| 60 Vector<RefPtr<AnimatableValue>>& interpolatedValues) { | |
| 61 // Interpolation behaviour spec: | |
| 62 // http://www.w3.org/TR/css3-transitions/#animtype-repeatable-list | |
| 63 DCHECK(interpolatedValues.isEmpty()); | |
| 64 DCHECK(!fromValues.isEmpty() && !toValues.isEmpty()); | |
| 65 size_t size = lowestCommonMultiple(fromValues.size(), toValues.size()); | |
| 66 DCHECK_GT(size, 0U); | |
| 67 for (size_t i = 0; i < size; ++i) { | |
| 68 const AnimatableValue* from = fromValues[i % fromValues.size()].get(); | |
| 69 const AnimatableValue* to = toValues[i % toValues.size()].get(); | |
| 70 // Spec: If a pair of values cannot be interpolated, then the lists are not | |
| 71 // interpolable. | |
| 72 if (AnimatableValue::usesDefaultInterpolation(from, to)) | |
| 73 return false; | |
| 74 interpolatedValues.push_back(interpolate(from, to, fraction)); | |
| 75 } | |
| 76 return true; | |
| 77 } | |
| 78 | |
| 79 PassRefPtr<AnimatableValue> AnimatableRepeatable::interpolateTo( | |
| 80 const AnimatableValue* value, | |
| 81 double fraction) const { | |
| 82 Vector<RefPtr<AnimatableValue>> interpolatedValues; | |
| 83 bool success = | |
| 84 interpolateLists(m_values, toAnimatableRepeatable(value)->m_values, | |
| 85 fraction, interpolatedValues); | |
| 86 if (success) | |
| 87 return create(interpolatedValues); | |
| 88 return defaultInterpolateTo(this, value, fraction); | |
| 89 } | |
| 90 | |
| 91 bool AnimatableRepeatable::equalTo(const AnimatableValue* value) const { | 37 bool AnimatableRepeatable::equalTo(const AnimatableValue* value) const { |
| 92 const Vector<RefPtr<AnimatableValue>>& otherValues = | 38 const Vector<RefPtr<AnimatableValue>>& otherValues = |
| 93 toAnimatableRepeatable(value)->m_values; | 39 toAnimatableRepeatable(value)->m_values; |
| 94 if (m_values.size() != otherValues.size()) | 40 if (m_values.size() != otherValues.size()) |
| 95 return false; | 41 return false; |
| 96 for (size_t i = 0; i < m_values.size(); ++i) { | 42 for (size_t i = 0; i < m_values.size(); ++i) { |
| 97 if (!m_values[i]->equals(otherValues[i].get())) | 43 if (!m_values[i]->equals(otherValues[i].get())) |
| 98 return false; | 44 return false; |
| 99 } | 45 } |
| 100 return true; | 46 return true; |
| 101 } | 47 } |
| 102 | 48 |
| 103 } // namespace blink | 49 } // namespace blink |
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