evdev: Factor common code out of key & touch converters

ui/events/ozone/evdev/touch_event_converter.h

 // Copyright 2013 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_EVENT_CONVERTER_EVDEV_H_
 #define UI_EVENTS_OZONE_EVDEV_TOUCH_EVENT_CONVERTER_EVDEV_H_
 
 #include <bitset>
 
 #include "base/compiler_specific.h"
 #include "base/files/file_path.h"
 #include "ui/events/event_constants.h"
 #include "ui/events/events_export.h"
+#include "ui/events/ozone/evdev/event_converter.h"
+#include "ui/events/ozone/evdev/event_modifiers.h"
 #include "ui/events/ozone/event_converter_ozone.h"
 
 namespace ui {
 
 class TouchEvent;
 
-class EVENTS_EXPORT TouchEventConverterEvdev : public EventConverterOzone {
+class EVENTS_EXPORT TouchEventConverterEvdev : public EventConverterEvdev {
  public:
   enum {
     MAX_FINGERS = 11
   };
-  TouchEventConverterEvdev(int fd, base::FilePath path);
+  TouchEventConverterEvdev(int fd,
+                           base::FilePath path,
+                           EventModifiersEvdev* modifiers);
   virtual ~TouchEventConverterEvdev();
 
+ protected:
+  void ProcessEvents(const struct input_event* inputs, int count) OVERRIDE;
+
  private:
   friend class MockTouchEventConverterEvdev;
 
   // Unsafe part of initialization.
   void Init();
 
-  // Overidden from base::MessagePumpLibevent::Watcher.
-  virtual void OnFileCanReadWithoutBlocking(int fd) OVERRIDE;
-  virtual void OnFileCanWriteWithoutBlocking(int fd) OVERRIDE;
-
   // Pressure values.
   int pressure_min_;
   int pressure_max_;  // Used to normalize pressure values.
 
   // Touch scaling.
   float x_scale_;
   float y_scale_;
 
   // Maximum coordinate-values allowed for the events.
   int x_max_;
   int y_max_;
 
   // Touch point currently being updated from the /dev/input/event* stream.
   int current_slot_;
 
-  // File descriptor for the /dev/input/event* instance.
-  int fd_;
-
-  // Path to input device.
-  base::FilePath path_;
-
   // Bit field tracking which in-progress touch points have been modified
   // without a syn event.
   std::bitset<MAX_FINGERS> altered_slots_;
 
   struct InProgressEvents {
     int x_;
     int y_;
     int id_;  // Device reported "unique" touch point id; -1 means not active
     int finger_;  // "Finger" id starting from 0; -1 means not active
 
     EventType type_;
     int major_;
     float pressure_;
   };
 
   // In-progress touch points.
   InProgressEvents events_[MAX_FINGERS];
 
   DISALLOW_COPY_AND_ASSIGN(TouchEventConverterEvdev);
 };
 
 }  // namespace ui
 
 #endif  // UI_EVENTS_OZONE_EVDEV_TOUCH_EVENT_CONVERTER_EVDEV_H_