Rename classes related to top controls

cc/input/top_controls_manager.h

-// Copyright 2013 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.
-
-#ifndef CC_INPUT_TOP_CONTROLS_MANAGER_H_
-#define CC_INPUT_TOP_CONTROLS_MANAGER_H_
-
-#include <memory>
-
-#include "base/macros.h"
-#include "base/memory/weak_ptr.h"
-#include "base/time/time.h"
-#include "cc/input/top_controls_state.h"
-#include "cc/layers/layer_impl.h"
-#include "ui/gfx/geometry/size.h"
-#include "ui/gfx/geometry/vector2d_f.h"
-
-namespace cc {
-
-class LayerTreeImpl;
-class TopControlsManagerClient;
-
-// Manages the position of the top controls.
-class CC_EXPORT TopControlsManager
-    : public base::SupportsWeakPtr<TopControlsManager> {
- public:
-  enum AnimationDirection {
-    NO_ANIMATION,
-    SHOWING_CONTROLS,
-    HIDING_CONTROLS
-  };
-
-  static std::unique_ptr<TopControlsManager> Create(
-      TopControlsManagerClient* client,
-      float top_controls_show_threshold,
-      float top_controls_hide_threshold);
-  virtual ~TopControlsManager();
-
-  // The offset from the window top to the top edge of the controls. Runs from 0
-  // (controls fully shown) to negative values (down is positive).
-  float ControlsTopOffset() const;
-  // The amount of offset of the web content area. Same as the current shown
-  // height of the top controls.
-  float ContentTopOffset() const;
-  float TopControlsShownRatio() const;
-  float TopControlsHeight() const;
-
-  // The amount of offset of the web content area, calculating from the bottom.
-  // Same as the current shown height of the bottom controls.
-  float ContentBottomOffset() const;
-  // Similar to TopControlsHeight(), this method should return a static value.
-  // The current animated height should be acquired from ContentBottomOffset().
-  float BottomControlsHeight() const;
-  float BottomControlsShownRatio() const;
-
-  bool has_animation() const { return animation_direction_ != NO_ANIMATION; }
-  AnimationDirection animation_direction() { return animation_direction_; }
-
-  void UpdateTopControlsState(TopControlsState constraints,
-                              TopControlsState current,
-                              bool animate);
-
-  void ScrollBegin();
-  gfx::Vector2dF ScrollBy(const gfx::Vector2dF& pending_delta);
-  void ScrollEnd();
-
-  // The caller should ensure that |Pinch{Begin,End}| are called within
-  // the scope of |Scroll{Begin,End}|.
-  void PinchBegin();
-  void PinchEnd();
-
-  void MainThreadHasStoppedFlinging();
-
-  gfx::Vector2dF Animate(base::TimeTicks monotonic_time);
-
- protected:
-  TopControlsManager(TopControlsManagerClient* client,
-                     float top_controls_show_threshold,
-                     float top_controls_hide_threshold);
-
- private:
-  void ResetAnimations();
-  void SetupAnimation(AnimationDirection direction);
-  void StartAnimationIfNecessary();
-  bool IsAnimationComplete(float new_ratio);
-  void ResetBaseline();
-  // Offset computation regardless of top or bottom control state.
-  float ContentOffsetInternal() const;
-
-  TopControlsManagerClient* client_;  // The client manages the lifecycle of
-                                      // this.
-
-  base::TimeTicks animation_start_time_;
-  float animation_start_value_;
-  base::TimeTicks animation_stop_time_;
-  float animation_stop_value_;
-  AnimationDirection animation_direction_;
-
-  TopControlsState permitted_state_;
-
-  // Accumulated scroll delta since last baseline reset
-  float accumulated_scroll_delta_;
-
-  // Content offset when last baseline reset occurred
-  float baseline_content_offset_;
-
-  // The percent height of the visible top control such that it must be shown
-  // when the user stops the scroll.
-  float top_controls_show_threshold_;
-
-  // The percent height of the visible top control such that it must be hidden
-  // when the user stops the scroll.
-  float top_controls_hide_threshold_;
-
-  bool pinch_gesture_active_;
-
-  DISALLOW_COPY_AND_ASSIGN(TopControlsManager);
-};
-
-}  // namespace cc
-
-#endif  // CC_INPUT_TOP_CONTROLS_MANAGER_H_