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| 1 // Copyright 2015 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #ifndef UI_EVENTS_OZONE_EVDEV_TOUCH_NOISE_FAR_APART_TAPS_TOUCH_NOISE_FILTER_H_ |
| 6 #define UI_EVENTS_OZONE_EVDEV_TOUCH_NOISE_FAR_APART_TAPS_TOUCH_NOISE_FILTER_H_ |
| 7 |
| 8 #include "base/macros.h" |
| 9 #include "base/time/time.h" |
| 10 #include "ui/events/ozone/evdev/touch_noise/touch_noise_filter.h" |
| 11 #include "ui/gfx/geometry/point_f.h" |
| 12 |
| 13 namespace ui { |
| 14 |
| 15 class FarApartTapsTouchNoiseFilter : public TouchNoiseFilter { |
| 16 public: |
| 17 FarApartTapsTouchNoiseFilter() {} |
| 18 ~FarApartTapsTouchNoiseFilter() override {} |
| 19 |
| 20 // TouchNoiseFilter: |
| 21 void FilterFrame(Frame* previous, Frame* next) override; |
| 22 |
| 23 private: |
| 24 struct Tap { |
| 25 Tap() {} |
| 26 Tap(base::TimeDelta start, const gfx::PointF& location) |
| 27 : start(start), location(location) {} |
| 28 |
| 29 bool is_valid() const { return start != base::TimeDelta(); } |
| 30 void Invalidate() { start = base::TimeDelta(); } |
| 31 |
| 32 base::TimeDelta start; |
| 33 gfx::PointF location; |
| 34 }; |
| 35 |
| 36 // Tracks in progress taps in slots. |
| 37 Tap tracked_taps_[kNumSlots]; |
| 38 |
| 39 DISALLOW_COPY_AND_ASSIGN(FarApartTapsTouchNoiseFilter); |
| 40 }; |
| 41 |
| 42 } // namespace ui |
| 43 |
| 44 #endif // UI_EVENTS_OZONE_EVDEV_TOUCH_NOISE_FAR_APART_TAPS_TOUCH_NOISE_FILTER_H
_ |
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