// Copyright 2014 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/blink/web_transform_animation_curve_impl.h"

#include "cc/animation/keyframed_animation_curve.h"
#include "cc/animation/timing_function.h"
#include "cc/animation/transform_operations.h"
#include "cc/blink/web_animation_curve_common.h"
#include "cc/blink/web_transform_operations_impl.h"

using blink::WebTransformKeyframe;

namespace cc_blink {

WebTransformAnimationCurveImpl::WebTransformAnimationCurveImpl()
    : curve_(cc::KeyframedTransformAnimationCurve::Create()) {
}

WebTransformAnimationCurveImpl::~WebTransformAnimationCurveImpl() {
}

blink::WebCompositorAnimationCurve::AnimationCurveType
WebTransformAnimationCurveImpl::type() const {
  return WebCompositorAnimationCurve::AnimationCurveTypeTransform;
}

void WebTransformAnimationCurveImpl::add(const WebTransformKeyframe& keyframe) {
  add(keyframe, TimingFunctionTypeEase);
}

void WebTransformAnimationCurveImpl::add(const WebTransformKeyframe& keyframe,
                                         TimingFunctionType type) {
  const cc::TransformOperations& transform_operations =
      static_cast<const WebTransformOperationsImpl&>(keyframe.value())
          .AsTransformOperations();
  curve_->AddKeyframe(cc::TransformKeyframe::Create(
      base::TimeDelta::FromSecondsD(keyframe.time()), transform_operations,
      CreateTimingFunction(type)));
}

void WebTransformAnimationCurveImpl::add(const WebTransformKeyframe& keyframe,
                                         double x1,
                                         double y1,
                                         double x2,
                                         double y2) {
  const cc::TransformOperations& transform_operations =
      static_cast<const WebTransformOperationsImpl&>(keyframe.value())
          .AsTransformOperations();
  curve_->AddKeyframe(cc::TransformKeyframe::Create(
      base::TimeDelta::FromSecondsD(keyframe.time()), transform_operations,
      cc::CubicBezierTimingFunction::Create(x1, y1, x2, y2)));
}

void WebTransformAnimationCurveImpl::add(const WebTransformKeyframe& keyframe,
                                         int steps,
                                         float steps_start_offset) {
  const cc::TransformOperations& transform_operations =
      static_cast<const WebTransformOperationsImpl&>(keyframe.value())
          .AsTransformOperations();
  curve_->AddKeyframe(cc::TransformKeyframe::Create(
      base::TimeDelta::FromSecondsD(keyframe.time()), transform_operations,
      cc::StepsTimingFunction::Create(steps, steps_start_offset)));
}

void WebTransformAnimationCurveImpl::setLinearTimingFunction() {
  curve_->SetTimingFunction(nullptr);
}

void WebTransformAnimationCurveImpl::setCubicBezierTimingFunction(
    TimingFunctionType type) {
  curve_->SetTimingFunction(CreateTimingFunction(type));
}

void WebTransformAnimationCurveImpl::setCubicBezierTimingFunction(double x1,
                                                                  double y1,
                                                                  double x2,
                                                                  double y2) {
  curve_->SetTimingFunction(
      cc::CubicBezierTimingFunction::Create(x1, y1, x2, y2).Pass());
}

void WebTransformAnimationCurveImpl::setStepsTimingFunction(
    int number_of_steps,
    float steps_start_offset) {
  curve_->SetTimingFunction(cc::StepsTimingFunction::Create(
                                number_of_steps, steps_start_offset).Pass());
}

scoped_ptr<cc::AnimationCurve>
WebTransformAnimationCurveImpl::CloneToAnimationCurve() const {
  return curve_->Clone();
}

}  // namespace cc_blink