Sync ui/events to chromium @ https://codereview.chromium.org/1210203002

ui/events/ozone/evdev/tablet_event_converter_evdev.h

+// 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_TABLET_EVENT_CONVERTER_EVDEV_H_
+#define UI_EVENTS_OZONE_TABLET_EVENT_CONVERTER_EVDEV_H_
+
+#include "base/files/file_path.h"
+#include "base/message_loop/message_pump_libevent.h"
+#include "ui/events/event.h"
+#include "ui/events/ozone/evdev/cursor_delegate_evdev.h"
+#include "ui/events/ozone/evdev/event_converter_evdev.h"
+#include "ui/events/ozone/evdev/event_device_info.h"
+#include "ui/events/ozone/evdev/event_modifiers_evdev.h"
+#include "ui/events/ozone/evdev/events_ozone_evdev_export.h"
+
+struct input_event;
+
+namespace ui {
+
+class DeviceEventDispatcherEvdev;
+
+class EVENTS_OZONE_EVDEV_EXPORT TabletEventConverterEvdev
+    : public EventConverterEvdev {
+ public:
+  TabletEventConverterEvdev(int fd,
+                            base::FilePath path,
+                            int id,
+                            InputDeviceType type,
+                            CursorDelegateEvdev* cursor,
+                            const EventDeviceInfo& info,
+                            DeviceEventDispatcherEvdev* dispatcher);
+  ~TabletEventConverterEvdev() override;
+
+  // EventConverterEvdev:
+  void OnFileCanReadWithoutBlocking(int fd) override;
+
+  void ProcessEvents(const struct input_event* inputs, int count);
+
+ private:
+  friend class MockTabletEventConverterEvdev;
+  void ConvertKeyEvent(const input_event& input);
+  void ConvertAbsEvent(const input_event& input);
+  void DispatchMouseButton(const input_event& input);
+  void UpdateCursor();
+
+  // Flush events delimited by EV_SYN. This is useful for handling
+  // non-axis-aligned movement properly.
+  void FlushEvents(const input_event& input);
+
+  // Controller for watching the input fd.
+  base::MessagePumpLibevent::FileDescriptorWatcher controller_;
+
+  // Shared cursor state.
+  CursorDelegateEvdev* cursor_;
+
+  // Dispatcher for events.
+  DeviceEventDispatcherEvdev* dispatcher_;
+
+  int y_abs_location_ = 0;
+  int x_abs_location_ = 0;
+  int x_abs_min_;
+  int y_abs_min_;
+  int x_abs_range_;
+  int y_abs_range_;
+
+  // BTN_TOOL_ code for the active device
+  int stylus_ = 0;
+
+  // Whether we need to move the cursor
+  bool abs_value_dirty_ = false;
+
+  // Set if we drop events in kernel (SYN_DROPPED) or in process.
+  bool dropped_events_ = false;
+
+  DISALLOW_COPY_AND_ASSIGN(TabletEventConverterEvdev);
+};
+
+}  // namespace ui
+
+#endif  // UI_EVENTS_OZONE_TABLET_EVENT_CONVERTER_EVDEV_H_