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// Copyright 2019 The Chromium Authors
// 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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