Move animation code to new ui/base/animation directory....

app/multi_animation.cc

-// Copyright (c) 2010 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 "app/multi_animation.h"
-
-#include "app/animation_delegate.h"
-#include "base/logging.h"
-
-// Default interval, in ms.
-static const int kDefaultInterval = 20;
-
-static int TotalTime(const MultiAnimation::Parts& parts) {
-  int time_ms = 0;
-  for (size_t i = 0; i < parts.size(); ++i) {
-    DCHECK(parts[i].end_time_ms - parts[i].start_time_ms >= parts[i].time_ms);
-    time_ms += parts[i].time_ms;
-  }
-  return time_ms;
-}
-
-MultiAnimation::MultiAnimation(const Parts& parts)
-    : Animation(base::TimeDelta::FromMilliseconds(kDefaultInterval)),
-      parts_(parts),
-      cycle_time_ms_(TotalTime(parts)),
-      current_value_(0),
-      current_part_index_(0),
-      continuous_(true) {
-  DCHECK(!parts_.empty());
-}
-
-MultiAnimation::~MultiAnimation() {}
-
-double MultiAnimation::GetCurrentValue() const {
-  return current_value_;
-}
-
-void MultiAnimation::Step(base::TimeTicks time_now) {
-  double last_value = current_value_;
-  size_t last_index = current_part_index_;
-
-  int delta = static_cast<int>((time_now - start_time()).InMilliseconds());
-  if (delta >= cycle_time_ms_ && !continuous_) {
-    current_part_index_ = parts_.size() - 1;
-    current_value_ = Tween::CalculateValue(parts_[current_part_index_].type, 1);
-    Stop();
-    return;
-  }
-  delta %= cycle_time_ms_;
-  const Part& part = GetPart(&delta, &current_part_index_);
-  double percent = static_cast<double>(delta + part.start_time_ms) /
-        static_cast<double>(part.end_time_ms);
-  DCHECK(percent <= 1);
-  current_value_ = Tween::CalculateValue(part.type, percent);
-
-  if ((current_value_ != last_value || current_part_index_ != last_index) &&
-      delegate()) {
-    delegate()->AnimationProgressed(this);
-  }
-}
-
-void MultiAnimation::SetStartTime(base::TimeTicks start_time) {
-  Animation::SetStartTime(start_time);
-  current_value_ = 0;
-  current_part_index_ = 0;
-}
-
-const MultiAnimation::Part& MultiAnimation::GetPart(int* time_ms,
-                                                    size_t* part_index) {
-  DCHECK(*time_ms < cycle_time_ms_);
-
-  for (size_t i = 0; i < parts_.size(); ++i) {
-    if (*time_ms < parts_[i].time_ms) {
-      *part_index = i;
-      return parts_[i];
-    }
-
-    *time_ms -= parts_[i].time_ms;
-  }
-  NOTREACHED();
-  *time_ms = 0;
-  *part_index = 0;
-  return parts_[0];
-}