ozone: evdev: Add gamepad support

ui/events/event.cc

Index: ui/events/event.cc
diff --git a/ui/events/event.cc b/ui/events/event.cc
index 64f06d0cae3d0fbef8a52b7a4c723663beca8582..3c8133704b5b74ba536a505d065cc110af2bf52f 100644
--- a/ui/events/event.cc
+++ b/ui/events/event.cc
@@ -80,6 +80,10 @@ const char* EventTypeName(EventType type) {
     CASE_TYPE(ET_POINTER_EXITED);
     CASE_TYPE(ET_POINTER_WHEEL_CHANGED);
     CASE_TYPE(ET_POINTER_CAPTURE_CHANGED);
+    CASE_TYPE(ET_GAMEPAD_BTN_PRESSED);
+    CASE_TYPE(ET_GAMEPAD_BTN_RELEASED);
+    CASE_TYPE(ET_GAMEPAD_ABS_MOVED);
+    CASE_TYPE(ET_GAMEPAD_FRAME);
     CASE_TYPE(ET_GESTURE_SCROLL_BEGIN);
     CASE_TYPE(ET_GESTURE_SCROLL_END);
     CASE_TYPE(ET_GESTURE_SCROLL_UPDATE);
@@ -161,6 +165,10 @@ SourceEventType EventTypeToLatencySourceEventType(EventType type) {
     case ET_DROP_TARGET_EVENT:
     case ET_CANCEL_MODE:
     case ET_UMA_DATA:
+    case ET_GAMEPAD_BTN_PRESSED:
+    case ET_GAMEPAD_BTN_RELEASED:
+    case ET_GAMEPAD_ABS_MOVED:
+    case ET_GAMEPAD_FRAME:
       return SourceEventType::OTHER;
 
     case ET_TOUCH_RELEASED:
@@ -209,6 +217,10 @@ bool X11EventHasNonStandardState(const base::NativeEvent& event) {
 
 // static
 std::unique_ptr<Event> Event::Clone(const Event& event) {
+  if (event.IsGamepadEvent()) {
+    return base::MakeUnique<GamepadEvent>(
+        static_cast<const GamepadEvent&>(event));
+  }
   if (event.IsKeyEvent()) {
     return base::MakeUnique<KeyEvent>(static_cast<const KeyEvent&>(event));
   }
@@ -285,6 +297,16 @@ const GestureEvent* Event::AsGestureEvent() const {
   return static_cast<const GestureEvent*>(this);
 }
 
+GamepadEvent* Event::AsGamepadEvent() {
+  CHECK(IsGamepadEvent());
+  return static_cast<GamepadEvent*>(this);
+}
+
+const GamepadEvent* Event::AsGamepadEvent() const {
+  CHECK(IsGamepadEvent());
+  return static_cast<const GamepadEvent*>(this);
+}
+
 KeyEvent* Event::AsKeyEvent() {
   CHECK(IsKeyEvent());
   return static_cast<KeyEvent*>(this);
@@ -1087,6 +1109,19 @@ PointerEvent::PointerEvent(EventType type,
 }
 
 const int PointerEvent::kMousePointerId = std::numeric_limits<int32_t>::max();
+////////////////////////////////////////////////////////////////////////////////
+// GamepadEvent
+
+GamepadEvent::GamepadEvent(EventType type,
+                           double value,
+                           uint16_t code,
+                           base::TimeTicks timestamp)
+    : Event(type, timestamp, 0), value_(value), code_(code) {}
+
+GamepadEvent::GamepadEvent(const GamepadEvent& gamepad_event)
+    : Event(gamepad_event.type(), gamepad_event.time_stamp(), 0),
+      value_(gamepad_event.value_),
+      code_(gamepad_event.code_) {}
 
 ////////////////////////////////////////////////////////////////////////////////
 // KeyEvent