Moving input related classes to the input folder.

remoting/client/ui/input_strategy.h

-// Copyright 2017 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 REMOTING_CLIENT_UI_INPUT_STRATEGY_H_
-#define REMOTING_CLIENT_UI_INPUT_STRATEGY_H_
-
-#include "remoting/client/ui/view_matrix.h"
-
-namespace remoting {
-
-class DesktopViewport;
-
-// This is an interface used by GestureInterpreter to customize the way gestures
-// are handled.
-class InputStrategy {
- public:
-  enum InputFeedbackType {
-    TAP_FEEDBACK,
-    DRAG_FEEDBACK,
-  };
-
-  enum Gesture {
-    NONE,
-    ZOOM,
-    DRAG,
-  };
-
-  virtual ~InputStrategy() {}
-
-  // Called when the GestureInterpreter receives a zoom gesture. The
-  // implementation is responsible for modifying the viewport and observing the
-  // change.
-  virtual void HandleZoom(const ViewMatrix::Point& pivot,
-                          float scale,
-                          DesktopViewport* viewport) = 0;
-
-  // Called when the GestureInterpreter receives a pan gesture. The
-  // implementation is responsible for modifying the viewport and observing the
-  // change.
-  // simultaneous_gesture: Gesture that is simultaneously in progress.
-  // Returns true if this changes the cursor position.
-  virtual bool HandlePan(const ViewMatrix::Vector2D& translation,
-                         Gesture simultaneous_gesture,
-                         DesktopViewport* viewport) = 0;
-
-  // Called when a touch input (which will end up injecting a mouse event at
-  // certain position in the host) is done at |touch_point|.
-  // The implementation should move the cursor to proper position.
-  virtual void TrackTouchInput(const ViewMatrix::Point& touch_point,
-                               const DesktopViewport& viewport) = 0;
-
-  // Returns the current cursor position.
-  virtual ViewMatrix::Point GetCursorPosition() const = 0;
-
-  // Maps a vector (or movement) in the surface coordinate to the vector to be
-  // used on the desktop. For example it can be used to map a scroll gesture
-  // on the screen to change in mouse wheel position.
-  virtual ViewMatrix::Vector2D MapScreenVectorToDesktop(
-      const ViewMatrix::Vector2D& delta,
-      const DesktopViewport& viewport) const = 0;
-
-  // Returns the maximum radius of the feedback animation on the surface's
-  // coordinate for the given input type. The feedback will then be shown on the
-  // cursor positions returned by GetCursorPosition(). Return 0 if no feedback
-  // should be shown.
-  virtual float GetFeedbackRadius(InputFeedbackType type) const = 0;
-
-  // Returns true if the input strategy maintains a visible cursor on the
-  // desktop.
-  virtual bool IsCursorVisible() const = 0;
-};
-
-}  // namespace remoting
-#endif  // REMOTING_CLIENT_UI_INPUT_STRATEGY_H_