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- // 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_
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