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| 1 // Copyright 2012 The Chromium Authors. All rights reserved. | 1 // Copyright 2012 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #include "cc/timing_function.h" | 5 #include "cc/timing_function.h" |
| 6 | 6 |
| 7 #include "third_party/skia/include/core/SkMath.h" | 7 #include "third_party/skia/include/core/SkMath.h" |
| 8 | 8 |
| 9 // TODO(danakj) These methods come from SkInterpolator.cpp. When such a method | 9 // TODO(danakj) These methods come from SkInterpolator.cpp. When such a method |
| 10 // is available in the public Skia API, we should switch to using that. | 10 // is available in the public Skia API, we should switch to using that. |
| (...skipping 66 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 77 } // namespace | 77 } // namespace |
| 78 | 78 |
| 79 namespace cc { | 79 namespace cc { |
| 80 | 80 |
| 81 TimingFunction::TimingFunction() { | 81 TimingFunction::TimingFunction() { |
| 82 } | 82 } |
| 83 | 83 |
| 84 TimingFunction::~TimingFunction() { | 84 TimingFunction::~TimingFunction() { |
| 85 } | 85 } |
| 86 | 86 |
| 87 double TimingFunction::duration() const { | 87 double TimingFunction::Duration() const { |
| 88 return 1.0; | 88 return 1.0; |
| 89 } | 89 } |
| 90 | 90 |
| 91 scoped_ptr<CubicBezierTimingFunction> CubicBezierTimingFunction::create( | 91 scoped_ptr<CubicBezierTimingFunction> CubicBezierTimingFunction::create( |
| 92 double x1, double y1, double x2, double y2) { | 92 double x1, double y1, double x2, double y2) { |
| 93 return make_scoped_ptr(new CubicBezierTimingFunction(x1, y1, x2, y2)); | 93 return make_scoped_ptr(new CubicBezierTimingFunction(x1, y1, x2, y2)); |
| 94 } | 94 } |
| 95 | 95 |
| 96 CubicBezierTimingFunction::CubicBezierTimingFunction(double x1, double y1, | 96 CubicBezierTimingFunction::CubicBezierTimingFunction(double x1, double y1, |
| 97 double x2, double y2) | 97 double x2, double y2) |
| 98 : x1_(SkDoubleToScalar(x1)), | 98 : x1_(SkDoubleToScalar(x1)), |
| 99 y1_(SkDoubleToScalar(y1)), | 99 y1_(SkDoubleToScalar(y1)), |
| 100 x2_(SkDoubleToScalar(x2)), | 100 x2_(SkDoubleToScalar(x2)), |
| 101 y2_(SkDoubleToScalar(y2)) { | 101 y2_(SkDoubleToScalar(y2)) { |
| 102 } | 102 } |
| 103 | 103 |
| 104 CubicBezierTimingFunction::~CubicBezierTimingFunction() { | 104 CubicBezierTimingFunction::~CubicBezierTimingFunction() { |
| 105 } | 105 } |
| 106 | 106 |
| 107 float CubicBezierTimingFunction::getValue(double x) const { | 107 float CubicBezierTimingFunction::GetValue(double x) const { |
| 108 SkScalar value = SkUnitCubicInterp(x1_, y1_, x2_, y2_, x); | 108 SkScalar value = SkUnitCubicInterp(x1_, y1_, x2_, y2_, x); |
| 109 return SkScalarToFloat(value); | 109 return SkScalarToFloat(value); |
| 110 } | 110 } |
| 111 | 111 |
| 112 scoped_ptr<AnimationCurve> CubicBezierTimingFunction::clone() const { | 112 scoped_ptr<AnimationCurve> CubicBezierTimingFunction::Clone() const { |
| 113 return make_scoped_ptr( | 113 return make_scoped_ptr( |
| 114 new CubicBezierTimingFunction(*this)).PassAs<AnimationCurve>(); | 114 new CubicBezierTimingFunction(*this)).PassAs<AnimationCurve>(); |
| 115 } | 115 } |
| 116 | 116 |
| 117 // These numbers come from http://www.w3.org/TR/css3-transitions/#transition-tim
ing-function_tag. | 117 // These numbers come from |
| 118 // http://www.w3.org/TR/css3-transitions/#transition-timing-function_tag. |
| 118 scoped_ptr<TimingFunction> EaseTimingFunction::create() { | 119 scoped_ptr<TimingFunction> EaseTimingFunction::create() { |
| 119 return CubicBezierTimingFunction::create( | 120 return CubicBezierTimingFunction::create( |
| 120 0.25, 0.1, 0.25, 1).PassAs<TimingFunction>(); | 121 0.25, 0.1, 0.25, 1).PassAs<TimingFunction>(); |
| 121 } | 122 } |
| 122 | 123 |
| 123 scoped_ptr<TimingFunction> EaseInTimingFunction::create() { | 124 scoped_ptr<TimingFunction> EaseInTimingFunction::create() { |
| 124 return CubicBezierTimingFunction::create( | 125 return CubicBezierTimingFunction::create( |
| 125 0.42, 0, 1.0, 1).PassAs<TimingFunction>(); | 126 0.42, 0, 1.0, 1).PassAs<TimingFunction>(); |
| 126 } | 127 } |
| 127 | 128 |
| 128 scoped_ptr<TimingFunction> EaseOutTimingFunction::create() { | 129 scoped_ptr<TimingFunction> EaseOutTimingFunction::create() { |
| 129 return CubicBezierTimingFunction::create( | 130 return CubicBezierTimingFunction::create( |
| 130 0, 0, 0.58, 1).PassAs<TimingFunction>(); | 131 0, 0, 0.58, 1).PassAs<TimingFunction>(); |
| 131 } | 132 } |
| 132 | 133 |
| 133 scoped_ptr<TimingFunction> EaseInOutTimingFunction::create() { | 134 scoped_ptr<TimingFunction> EaseInOutTimingFunction::create() { |
| 134 return CubicBezierTimingFunction::create( | 135 return CubicBezierTimingFunction::create( |
| 135 0.42, 0, 0.58, 1).PassAs<TimingFunction>(); | 136 0.42, 0, 0.58, 1).PassAs<TimingFunction>(); |
| 136 } | 137 } |
| 137 | 138 |
| 138 } // namespace cc | 139 } // namespace cc |
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