cc/blink/web_scroll_offset_animation_curve_impl.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "cc/blink/web_scroll_offset_animation_curve_impl.h"
   6
   7 #include "cc/animation/scroll_offset_animation_curve.h"
   8 #include "cc/animation/timing_function.h"
   9 #include "cc/blink/web_animation_curve_common.h"
  10
  11 using blink::WebFloatPoint;
  12
  13 namespace cc_blink {
  14
  15 WebScrollOffsetAnimationCurveImpl::WebScrollOffsetAnimationCurveImpl(
  16     WebFloatPoint target_value,
  17     TimingFunctionType timing_function)
  18     : curve_(cc::ScrollOffsetAnimationCurve::Create(
  19           gfx::ScrollOffset(target_value.x, target_value.y),
  20           CreateTimingFunction(timing_function))) {
  21 }
  22
  23 WebScrollOffsetAnimationCurveImpl::~WebScrollOffsetAnimationCurveImpl() {
  24 }
  25
  26 blink::WebCompositorAnimationCurve::AnimationCurveType
  27 WebScrollOffsetAnimationCurveImpl::type() const {
  28   return WebCompositorAnimationCurve::AnimationCurveTypeScrollOffset;
  29 }
  30
  31 void WebScrollOffsetAnimationCurveImpl::setInitialValue(
  32     WebFloatPoint initial_value) {
  33   curve_->SetInitialValue(gfx::ScrollOffset(initial_value.x, initial_value.y));
  34 }
  35
  36 WebFloatPoint WebScrollOffsetAnimationCurveImpl::getValue(double time) const {
  37   gfx::ScrollOffset value =
  38       curve_->GetValue(base::TimeDelta::FromSecondsD(time));
  39   return WebFloatPoint(value.x(), value.y());
  40 }
  41
  42 double WebScrollOffsetAnimationCurveImpl::duration() const {
  43   return curve_->Duration().InSecondsF();
  44 }
  45
  46 WebFloatPoint WebScrollOffsetAnimationCurveImpl::targetValue() const {
  47   gfx::ScrollOffset target = curve_->target_value();
  48   return WebFloatPoint(target.x(), target.y());
  49 }
  50
  51 void WebScrollOffsetAnimationCurveImpl::updateTarget(double time,
  52                                                      WebFloatPoint new_target) {
  53   curve_->UpdateTarget(time, gfx::ScrollOffset(new_target.x, new_target.y));
  54 }
  55
  56 scoped_ptr<cc::AnimationCurve>
  57 WebScrollOffsetAnimationCurveImpl::CloneToAnimationCurve() const {
  58   return curve_->Clone();
  59 }
  60
  61 }  // namespace cc_blink