Index: ui/events/ozone/evdev/touch_noise/touch_noise_finder.h |
diff --git a/ui/events/ozone/evdev/touch_noise/touch_noise_finder.h b/ui/events/ozone/evdev/touch_noise/touch_noise_finder.h |
new file mode 100644 |
index 0000000000000000000000000000000000000000..3d5ffec35170680fa895fe172bb1ffa4b0d5d450 |
--- /dev/null |
+++ b/ui/events/ozone/evdev/touch_noise/touch_noise_finder.h |
@@ -0,0 +1,48 @@ |
+// Copyright 2015 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 UI_EVENTS_OZONE_EVDEV_TOUCH_NOISE_TOUCH_NOISE_FINDER_H_ |
+#define UI_EVENTS_OZONE_EVDEV_TOUCH_NOISE_TOUCH_NOISE_FINDER_H_ |
+ |
+#include <bitset> |
+#include <vector> |
+ |
+#include "base/basictypes.h" |
+#include "base/time/time.h" |
+#include "ui/events/ozone/evdev/events_ozone_evdev_export.h" |
+#include "ui/events/ozone/evdev/touch_evdev_types.h" |
+ |
+namespace ui { |
+class TouchNoiseFilter; |
+ |
+// Finds touches which are likely touch noise. |
+class EVENTS_OZONE_EVDEV_EXPORT TouchNoiseFinder { |
+ public: |
+ TouchNoiseFinder(); |
+ ~TouchNoiseFinder(); |
+ |
+ // Updates which ABS_MT_SLOTs are likely noise. |touches| should contain all |
+ // of the in-progress touches at |time| (including suspected noisy touches). |
+ // |touches| should have at most one entry per ABS_MT_SLOT. |
+ void HandleTouches(const std::vector<InProgressTouchEvdev>& touches, |
+ base::TimeDelta time); |
+ |
+ // Returns whether the in-progress touch at ABS_MT_SLOT |slot| is likely |
+ // noise. |
+ bool SlotHasNoise(size_t slot) const; |
+ |
+ private: |
+ friend class TouchEventConverterEvdevTouchNoiseTest; |
+ |
+ // The slots which are likely noise. |
+ std::bitset<kNumTouchEvdevSlots> slots_with_noise_; |
+ |
+ std::vector<TouchNoiseFilter*> filters_; |
+ |
+ DISALLOW_COPY_AND_ASSIGN(TouchNoiseFinder); |
+}; |
+ |
+} // namespace ui |
+ |
+#endif // UI_EVENTS_OZONE_EVDEV_TOUCH_NOISE_TOUCH_NOISE_FINDER_H_ |