| // Copyright 2019 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 COMPONENTS_EXO_RELATIVE_POINTER_DELEGATE_H_ |
| #define COMPONENTS_EXO_RELATIVE_POINTER_DELEGATE_H_ |
| |
| #include "base/time/time.h" |
| #include "ui/gfx/geometry/vector2d_f.h" |
| |
| namespace exo { |
| class Pointer; |
| |
| // Handles sending relative mouse movements. |
| class RelativePointerDelegate { |
| public: |
| // Called at the top of the pointer's destructor, to give observers a |
| // chance to remove themselves. |
| virtual void OnPointerDestroying(Pointer* pointer) = 0; |
| |
| // Called to indicate motion. |relative_motion| is given in screen-terms, |
| // whereas |ordinal_motion| comes from hardware and e.g. is not accelerated. |
| virtual void OnPointerRelativeMotion( |
| base::TimeTicks time_stamp, |
| const gfx::Vector2dF& relative_motion, |
| const gfx::Vector2dF& ordinal_motion) = 0; |
| |
| protected: |
| virtual ~RelativePointerDelegate() {} |
| }; |
| |
| } // namespace exo |
| |
| #endif // COMPONENTS_EXO_RELATIVE_POINTER_DELEGATE_H_ |