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diff --git a/chromium/ui/events/ozone/evdev/libgestures_glue/gesture_interpreter_libevdev_cros.h b/chromium/ui/events/ozone/evdev/libgestures_glue/gesture_interpreter_libevdev_cros.h
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+++ b/chromium/ui/events/ozone/evdev/libgestures_glue/gesture_interpreter_libevdev_cros.h
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+// Copyright 2014 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_LIBGESTURES_GLUE_GESTURE_INTERPRETER_LIBEVDEV_CROS_H_
+#define UI_EVENTS_OZONE_EVDEV_LIBGESTURES_GLUE_GESTURE_INTERPRETER_LIBEVDEV_CROS_H_
+
+#include <gestures/gestures.h>
+#include <libevdev/libevdev.h>
+
+#include "base/callback.h"
+#include "base/memory/scoped_ptr.h"
+#include "ui/events/ozone/evdev/cursor_delegate_evdev.h"
+#include "ui/events/ozone/evdev/events_ozone_evdev_export.h"
+#include "ui/events/ozone/evdev/libgestures_glue/event_reader_libevdev_cros.h"
+
+namespace ui {
+
+class Event;
+class EventDeviceInfo;
+class EventModifiersEvdev;
+class CursorDelegateEvdev;
+
+typedef base::Callback<void(Event*)> EventDispatchCallback;
+
+// Convert libevdev-cros events to ui::Events using libgestures.
+//
+// This builds a GestureInterpreter for an input device (touchpad or
+// mouse).
+//
+// Raw input events must be preprocessed into a form suitable for
+// libgestures. The kernel protocol only emits changes to the device state,
+// so changes must be accumulated until a sync event. The full device state
+// at sync is then processed by libgestures.
+//
+// Once we have the state at sync, we convert it to a HardwareState object
+// and forward it to libgestures. If any gestures are produced, they are
+// converted to ui::Events and dispatched.
+class EVENTS_OZONE_EVDEV_EXPORT GestureInterpreterLibevdevCros
+ : public EventReaderLibevdevCros::Delegate {
+ public:
+ GestureInterpreterLibevdevCros(EventModifiersEvdev* modifiers,
+ CursorDelegateEvdev* cursor,
+ const EventDispatchCallback& callback);
+ virtual ~GestureInterpreterLibevdevCros();
+
+ // Overriden from ui::EventReaderLibevdevCros::Delegate
+ virtual void OnLibEvdevCrosOpen(Evdev* evdev,
+ EventStateRec* evstate) OVERRIDE;
+ virtual void OnLibEvdevCrosEvent(Evdev* evdev,
+ EventStateRec* evstate,
+ const timeval& time) OVERRIDE;
+
+ // Handler for gesture events generated from libgestures.
+ void OnGestureReady(const Gesture* gesture);
+
+ private:
+ void OnGestureMove(const Gesture* gesture, const GestureMove* move);
+ void OnGestureScroll(const Gesture* gesture, const GestureScroll* move);
+ void OnGestureButtonsChange(const Gesture* gesture,
+ const GestureButtonsChange* move);
+ void Dispatch(Event* event);
+ void DispatchMouseButton(unsigned int modifier, bool down);
+
+ // Shared modifier state.
+ EventModifiersEvdev* modifiers_;
+
+ // Shared cursor state.
+ CursorDelegateEvdev* cursor_;
+
+ // Callback for dispatching events.
+ EventDispatchCallback dispatch_callback_;
+
+ // Gestures interpretation state.
+ gestures::GestureInterpreter* interpreter_;
+
+ DISALLOW_COPY_AND_ASSIGN(GestureInterpreterLibevdevCros);
+};
+
+} // namspace ui
+
+#endif // UI_EVENTS_OZONE_EVDEV_LIBGESTURES_GLUE_GESTURE_INTERPRETER_LIBEVDEV_CROS_H_