ui/events/ozone/evdev/event_converter_evdev_impl.h

   1 // Copyright 2014 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_EVENT_CONVERTER_EVDEV_IMPL_H_
   6 #define UI_EVENTS_OZONE_EVDEV_EVENT_CONVERTER_EVDEV_IMPL_H_
   7
   8 #include "base/files/file_path.h"
   9 #include "base/message_loop/message_pump_libevent.h"
  10 #include "ui/events/devices/input_device.h"
  11 #include "ui/events/event.h"
  12 #include "ui/events/ozone/evdev/cursor_delegate_evdev.h"
  13 #include "ui/events/ozone/evdev/event_converter_evdev.h"
  14 #include "ui/events/ozone/evdev/event_device_info.h"
  15 #include "ui/events/ozone/evdev/event_modifiers_evdev.h"
  16 #include "ui/events/ozone/evdev/events_ozone_evdev_export.h"
  17 #include "ui/events/ozone/evdev/keyboard_evdev.h"
  18 #include "ui/events/ozone/evdev/mouse_button_map_evdev.h"
  19
  20 struct input_event;
  21
  22 namespace ui {
  23
  24 class EVENTS_OZONE_EVDEV_EXPORT EventConverterEvdevImpl
  25     : public EventConverterEvdev {
  26  public:
  27   EventConverterEvdevImpl(int fd,
  28                           base::FilePath path,
  29                           int id,
  30                           InputDeviceType type,
  31                           const EventDeviceInfo& info,
  32                           EventModifiersEvdev* modifiers,
  33                           MouseButtonMapEvdev* button_map,
  34                           CursorDelegateEvdev* cursor,
  35                           KeyboardEvdev* keyboard,
  36                           const EventDispatchCallback& callback);
  37   ~EventConverterEvdevImpl() override;
  38
  39   // EventConverterEvdev:
  40   void OnFileCanReadWithoutBlocking(int fd) override;
  41   bool HasKeyboard() const override;
  42
  43   void ProcessEvents(const struct input_event* inputs, int count);
  44
  45  private:
  46   void ConvertKeyEvent(const input_event& input);
  47
  48   void ConvertMouseMoveEvent(const input_event& input);
  49
  50   void DispatchMouseButton(const input_event& input);
  51
  52   // Flush events delimited by EV_SYN. This is useful for handling
  53   // non-axis-aligned movement properly.
  54   void FlushEvents();
  55
  56   // Input modalities for this device.
  57   bool has_keyboard_;
  58
  59   // Save x-axis events of relative devices to be flushed at EV_SYN time.
  60   int x_offset_;
  61
  62   // Save y-axis events of relative devices to be flushed at EV_SYN time.
  63   int y_offset_;
  64
  65   // Controller for watching the input fd.
  66   base::MessagePumpLibevent::FileDescriptorWatcher controller_;
  67
  68   // Shared cursor state.
  69   CursorDelegateEvdev* cursor_;
  70
  71   // Shared keyboard state.
  72   KeyboardEvdev* keyboard_;
  73
  74   // Modifier key state (shift, ctrl, etc).
  75   EventModifiersEvdev* modifiers_;
  76
  77   // Shared mouse button map.
  78   MouseButtonMapEvdev* button_map_;
  79
  80   // Callback for dispatching events.
  81   EventDispatchCallback callback_;
  82
  83   DISALLOW_COPY_AND_ASSIGN(EventConverterEvdevImpl);
  84 };
  85
  86 }  // namespace ui
  87
  88 #endif  // UI_EVENTS_OZONE_EVDEV_EVENT_CONVERTER_EVDEV_IMPL_H_
  89