Part 3 of cc/ directory shuffles: animation

cc/keyframed_animation_curve.cc

-// Copyright 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "cc/keyframed_animation_curve.h"
-
-namespace cc {
-
-namespace {
-
-template <class Keyframe>
-void InsertKeyframe(scoped_ptr<Keyframe> keyframe,
-                    ScopedPtrVector<Keyframe>& keyframes) {
-  // Usually, the keyframes will be added in order, so this loop would be
-  // unnecessary and we should skip it if possible.
-  if (!keyframes.empty() && keyframe->Time() < keyframes.back()->Time()) {
-    for (size_t i = 0; i < keyframes.size(); ++i) {
-      if (keyframe->Time() < keyframes[i]->Time()) {
-        keyframes.insert(keyframes.begin() + i, keyframe.Pass());
-        return;
-      }
-    }
-  }
-
-  keyframes.push_back(keyframe.Pass());
-}
-
-scoped_ptr<TimingFunction> CloneTimingFunction(
-    const TimingFunction* timing_function) {
-  DCHECK(timing_function);
-  scoped_ptr<AnimationCurve> curve(timing_function->Clone());
-  return scoped_ptr<TimingFunction>(
-      static_cast<TimingFunction*>(curve.release()));
-}
-
-}  // namespace
-
-Keyframe::Keyframe(double time, scoped_ptr<TimingFunction> timing_function)
-    : time_(time),
-      timing_function_(timing_function.Pass()) {}
-
-Keyframe::~Keyframe() {}
-
-double Keyframe::Time() const {
-  return time_;
-}
-
-scoped_ptr<FloatKeyframe> FloatKeyframe::Create(
-    double time,
-    float value,
-    scoped_ptr<TimingFunction> timing_function) {
-  return make_scoped_ptr(
-      new FloatKeyframe(time, value, timing_function.Pass()));
-}
-
-FloatKeyframe::FloatKeyframe(double time,
-                             float value,
-                             scoped_ptr<TimingFunction> timing_function)
-    : Keyframe(time, timing_function.Pass()),
-      value_(value) {}
-
-FloatKeyframe::~FloatKeyframe() {}
-
-float FloatKeyframe::Value() const {
-  return value_;
-}
-
-scoped_ptr<FloatKeyframe> FloatKeyframe::Clone() const {
-  scoped_ptr<TimingFunction> func;
-  if (timing_function())
-    func = CloneTimingFunction(timing_function());
-  return FloatKeyframe::Create(Time(), Value(), func.Pass());
-}
-
-scoped_ptr<TransformKeyframe> TransformKeyframe::Create(
-    double time,
-    const TransformOperations& value,
-    scoped_ptr<TimingFunction> timing_function) {
-  return make_scoped_ptr(
-      new TransformKeyframe(time, value, timing_function.Pass()));
-}
-
-TransformKeyframe::TransformKeyframe(double time,
-                                     const TransformOperations& value,
-                                     scoped_ptr<TimingFunction> timing_function)
-    : Keyframe(time, timing_function.Pass()),
-      value_(value) {}
-
-TransformKeyframe::~TransformKeyframe() {}
-
-const TransformOperations& TransformKeyframe::Value() const {
-  return value_;
-}
-
-scoped_ptr<TransformKeyframe> TransformKeyframe::Clone() const {
-  scoped_ptr<TimingFunction> func;
-  if (timing_function())
-    func = CloneTimingFunction(timing_function());
-  return TransformKeyframe::Create(Time(), Value(), func.Pass());
-}
-
-scoped_ptr<KeyframedFloatAnimationCurve> KeyframedFloatAnimationCurve::
-    Create() {
-  return make_scoped_ptr(new KeyframedFloatAnimationCurve);
-}
-
-KeyframedFloatAnimationCurve::KeyframedFloatAnimationCurve() {}
-
-KeyframedFloatAnimationCurve::~KeyframedFloatAnimationCurve() {}
-
-void KeyframedFloatAnimationCurve::AddKeyframe(
-    scoped_ptr<FloatKeyframe> keyframe) {
-  InsertKeyframe(keyframe.Pass(), keyframes_);
-}
-
-double KeyframedFloatAnimationCurve::Duration() const {
-  return keyframes_.back()->Time() - keyframes_.front()->Time();
-}
-
-scoped_ptr<AnimationCurve> KeyframedFloatAnimationCurve::Clone() const {
-  scoped_ptr<KeyframedFloatAnimationCurve> to_return(
-      KeyframedFloatAnimationCurve::Create());
-  for (size_t i = 0; i < keyframes_.size(); ++i)
-    to_return->AddKeyframe(keyframes_[i]->Clone());
-  return to_return.PassAs<AnimationCurve>();
-}
-
-float KeyframedFloatAnimationCurve::GetValue(double t) const {
-  if (t <= keyframes_.front()->Time())
-    return keyframes_.front()->Value();
-
-  if (t >= keyframes_.back()->Time())
-    return keyframes_.back()->Value();
-
-  size_t i = 0;
-  for (; i < keyframes_.size() - 1; ++i) {
-    if (t < keyframes_[i+1]->Time())
-      break;
-  }
-
-  float progress =
-      static_cast<float>((t - keyframes_[i]->Time()) /
-                         (keyframes_[i+1]->Time() - keyframes_[i]->Time()));
-
-  if (keyframes_[i]->timing_function())
-    progress = keyframes_[i]->timing_function()->GetValue(progress);
-
-  return keyframes_[i]->Value() +
-      (keyframes_[i+1]->Value() - keyframes_[i]->Value()) * progress;
-}
-
-scoped_ptr<KeyframedTransformAnimationCurve> KeyframedTransformAnimationCurve::
-    Create() {
-  return make_scoped_ptr(new KeyframedTransformAnimationCurve);
-}
-
-KeyframedTransformAnimationCurve::KeyframedTransformAnimationCurve() {}
-
-KeyframedTransformAnimationCurve::~KeyframedTransformAnimationCurve() {}
-
-void KeyframedTransformAnimationCurve::AddKeyframe(
-    scoped_ptr<TransformKeyframe> keyframe) {
-  InsertKeyframe(keyframe.Pass(), keyframes_);
-}
-
-double KeyframedTransformAnimationCurve::Duration() const {
-  return keyframes_.back()->Time() - keyframes_.front()->Time();
-}
-
-scoped_ptr<AnimationCurve> KeyframedTransformAnimationCurve::Clone() const {
-  scoped_ptr<KeyframedTransformAnimationCurve> to_return(
-      KeyframedTransformAnimationCurve::Create());
-  for (size_t i = 0; i < keyframes_.size(); ++i)
-    to_return->AddKeyframe(keyframes_[i]->Clone());
-  return to_return.PassAs<AnimationCurve>();
-}
-
-gfx::Transform KeyframedTransformAnimationCurve::GetValue(double t) const {
-  if (t <= keyframes_.front()->Time())
-    return keyframes_.front()->Value().Apply();
-
-  if (t >= keyframes_.back()->Time())
-    return keyframes_.back()->Value().Apply();
-
-  size_t i = 0;
-  for (; i < keyframes_.size() - 1; ++i) {
-    if (t < keyframes_[i+1]->Time())
-      break;
-  }
-
-  double progress = (t - keyframes_[i]->Time()) /
-                    (keyframes_[i+1]->Time() - keyframes_[i]->Time());
-
-  if (keyframes_[i]->timing_function())
-    progress = keyframes_[i]->timing_function()->GetValue(progress);
-
-  return keyframes_[i+1]->Value().Blend(keyframes_[i]->Value(), progress);
-}
-
-}  // namespace cc