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 <bitset>
   9
  10 #include "base/files/file_path.h"
  11 #include "base/message_loop/message_pump_libevent.h"
  12 #include "ui/events/devices/input_device.h"
  13 #include "ui/events/event.h"
  14 #include "ui/events/ozone/evdev/cursor_delegate_evdev.h"
  15 #include "ui/events/ozone/evdev/event_converter_evdev.h"
  16 #include "ui/events/ozone/evdev/event_device_info.h"
  17 #include "ui/events/ozone/evdev/event_modifiers_evdev.h"
  18 #include "ui/events/ozone/evdev/events_ozone_evdev_export.h"
  19 #include "ui/events/ozone/evdev/keyboard_evdev.h"
  20 #include "ui/events/ozone/evdev/mouse_button_map_evdev.h"
  21
  22 struct input_event;
  23
  24 namespace ui {
  25
  26 class DeviceEventDispatcherEvdev;
  27
  28 class EVENTS_OZONE_EVDEV_EXPORT EventConverterEvdevImpl
  29     : public EventConverterEvdev {
  30  public:
  31   EventConverterEvdevImpl(int fd,
  32                           base::FilePath path,
  33                           int id,
  34                           const EventDeviceInfo& info,
  35                           CursorDelegateEvdev* cursor,
  36                           DeviceEventDispatcherEvdev* dispatcher);
  37   ~EventConverterEvdevImpl() override;
  38
  39   // EventConverterEvdev:
  40   void OnFileCanReadWithoutBlocking(int fd) override;
  41   bool HasKeyboard() const override;
  42   bool HasTouchpad() const override;
  43   bool HasCapsLockLed() const override;
  44   void SetKeyFilter(bool enable_filter,
  45                     std::vector<DomCode> allowed_keys) override;
  46   void OnDisabled() override;
  47
  48   void ProcessEvents(const struct input_event* inputs, int count);
  49
  50  private:
  51   void ConvertKeyEvent(const input_event& input);
  52   void ConvertMouseMoveEvent(const input_event& input);
  53   void OnKeyChange(unsigned int key,
  54                    bool down,
  55                    const base::TimeDelta& timestamp);
  56   void ReleaseKeys();
  57   void ReleaseMouseButtons();
  58   void OnLostSync();
  59   void DispatchMouseButton(const input_event& input);
  60   void OnButtonChange(int code, bool down, const base::TimeDelta& timestamp);
  61
  62   // Flush events delimited by EV_SYN. This is useful for handling
  63   // non-axis-aligned movement properly.
  64   void FlushEvents(const input_event& input);
  65
  66   // Input modalities for this device.
  67   bool has_keyboard_;
  68   bool has_touchpad_;
  69
  70   // LEDs for this device.
  71   bool has_caps_lock_led_;
  72
  73   // Save x-axis events of relative devices to be flushed at EV_SYN time.
  74   int x_offset_ = 0;
  75
  76   // Save y-axis events of relative devices to be flushed at EV_SYN time.
  77   int y_offset_ = 0;
  78
  79   // Controller for watching the input fd.
  80   base::MessagePumpLibevent::FileDescriptorWatcher controller_;
  81
  82   // The evdev codes of the keys which should be blocked.
  83   std::bitset<KEY_CNT> blocked_keys_;
  84
  85   // Pressed keys bitset.
  86   std::bitset<KEY_CNT> key_state_;
  87
  88   // Last mouse button state.
  89   static const int kMouseButtonCount = BTN_JOYSTICK - BTN_MOUSE;
  90   std::bitset<kMouseButtonCount> mouse_button_state_;
  91
  92   // Shared cursor state.
  93   CursorDelegateEvdev* cursor_;
  94
  95   // Callbacks for dispatching events.
  96   DeviceEventDispatcherEvdev* dispatcher_;
  97
  98   DISALLOW_COPY_AND_ASSIGN(EventConverterEvdevImpl);
  99 };
 100
 101 }  // namespace ui
 102
 103 #endif  // UI_EVENTS_OZONE_EVDEV_EVENT_CONVERTER_EVDEV_IMPL_H_
 104