Remove old Aura Gesture Detection Pipeline.

ui/events/gestures/gesture_point.h

-// Copyright (c) 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.
-
-#ifndef UI_EVENTS_GESTURES_GESTURE_POINT_H_
-#define UI_EVENTS_GESTURES_GESTURE_POINT_H_
-
-#include "base/basictypes.h"
-#include "ui/events/gestures/velocity_calculator.h"
-#include "ui/gfx/point.h"
-#include "ui/gfx/rect.h"
-
-namespace ui {
-class TouchEvent;
-
-// A GesturePoint represents a single touch-point/finger during a gesture
-// recognition process.
-class GesturePoint {
- public:
-  GesturePoint();
-  ~GesturePoint();
-
-  // Resets various states.
-  void Reset();
-
-  void ResetVelocity();
-
-  // Updates some states when a Tap gesture has been recognized for this point.
-  void UpdateForTap();
-
-  // Updates some states when a Scroll gesture has been recognized for this
-  // point.
-  void UpdateForScroll();
-
-  // Updates states depending on the event and the gesture-state.
-  void UpdateValues(const TouchEvent& event);
-
-  // Responds according to the state of the gesture point (i.e. the point can
-  // represent a click or scroll etc.)
-  bool IsInClickWindow(const TouchEvent& event) const;
-  bool IsInDoubleClickWindow(const TouchEvent& event) const;
-  bool IsInTripleClickWindow(const TouchEvent& event) const;
-  bool IsInFlickWindow(const TouchEvent& event);
-  bool IsInHorizontalRailWindow() const;
-  bool IsInVerticalRailWindow() const;
-  bool IsInsideTouchSlopRegion(const TouchEvent& event) const;
-  bool IsInScrollWindow(const TouchEvent& event) const;
-  bool BreaksHorizontalRail();
-  bool BreaksVerticalRail();
-  bool DidScroll(const TouchEvent& event, int distance) const;
-
-  const gfx::PointF& first_touch_position() const {
-    return first_touch_position_;
-  }
-
-  double last_touch_time() const { return last_touch_time_; }
-  const gfx::PointF& last_touch_position() const {
-    return last_touch_position_;
-  }
-  float x() const { return last_touch_position_.x(); }
-  float y() const { return last_touch_position_.y(); }
-
-  // point_id_ is used to drive GestureSequence::ProcessTouchEventForGesture.
-  // point_ids are maintained such that the set of point_ids is always
-  // contiguous, from 0 to the number of current touches.
-  // A lower point_id indicates that a touch occurred first.
-  // A negative point_id indicates that the GesturePoint is not currently
-  // associated with a touch.
-  void set_point_id(int point_id) { point_id_ = point_id; }
-  int point_id() const { return point_id_; }
-
-  void set_touch_id(int touch_id) { touch_id_ = touch_id; }
-  int touch_id() const { return touch_id_; }
-
-  bool in_use() const { return point_id_ >= 0; }
-
-  gfx::Vector2dF ScrollDelta() const;
-
-  float XVelocity() { return velocity_calculator_.XVelocity(); }
-  float YVelocity() { return velocity_calculator_.YVelocity(); }
-
-  const gfx::RectF& enclosing_rectangle() const { return enclosing_rect_; }
-
-  void set_source_device_id(int source_device_id) {
-    source_device_id_ = source_device_id;
-  }
-  int source_device_id() const { return source_device_id_; }
-
- private:
-  // Various statistical functions to manipulate gestures.
-
-  bool IsInClickTimeWindow() const;
-  bool IsInClickAggregateTimeWindow(double before, double after) const;
-  bool IsPointInsideDoubleTapTouchSlopRegion(
-      gfx::PointF p1, gfx::PointF p2) const;
-  bool IsOverMinFlickSpeed();
-
-  // Returns -1, 0, 1 for |v| below the negative velocity threshold,
-  // in [-threshold, threshold] or above respectively.
-  int ScrollVelocityDirection(float v);
-
-  // The enclosing rectangle represents a rectangular touch region generated
-  // by a sequence of ET_TOUCH_PRESSED, ET_TOUCH_MOVED, and ET_TOUCH_RELEASED
-  // events forming a GESTURE_TAP event. The enclosing rectangle is updated
-  // to be the union of the touch data from each of these events. It is
-  // cleared on a ET_TOUCH_PRESSED event (i.e., at the beginning of a possible
-  // GESTURE_TAP event) or when Reset is called.
-  void UpdateEnclosingRectangle(const TouchEvent& event);
-  void clear_enclosing_rectangle() { enclosing_rect_ = gfx::RectF(); }
-
-  // The position of the first touchdown event.
-  gfx::PointF first_touch_position_;
-  double first_touch_time_;
-
-  gfx::PointF second_last_touch_position_;
-  double second_last_touch_time_;
-
-  gfx::PointF last_touch_position_;
-  double last_touch_time_;
-
-  double second_last_tap_time_;
-  gfx::PointF second_last_tap_position_;
-
-  double last_tap_time_;
-  gfx::PointF last_tap_position_;
-
-  VelocityCalculator velocity_calculator_;
-
-  int point_id_;
-  int touch_id_;
-
-  // Represents the rectangle that encloses the circles/ellipses
-  // generated by a sequence of touch events
-  gfx::RectF enclosing_rect_;
-
-  int source_device_id_;
-
-  float max_touch_move_in_pixels_for_click_squared_;
-  float max_distance_between_taps_for_double_tap_squared_;
-
-  DISALLOW_COPY_AND_ASSIGN(GesturePoint);
-};
-
-}  // namespace ui
-
-#endif  // UI_EVENTS_GESTURES_GESTURE_POINT_H_