int32_t Engine::HandleInput()

in PlayAssetDelivery/NativeSample/Teapot/src/main/cpp/TeapotNativeActivity.cpp [203:260]
48 lines of code
9 McCabe index (conditional complexity)

int32_t Engine::HandleInput(android_app *app, AInputEvent *event) {
  Engine *eng = (Engine *) app->userData;
  if (AInputEvent_getType(event) == AINPUT_EVENT_TYPE_MOTION) {
    ndk_helper::GESTURE_STATE doubleTapState =
        eng->doubletap_detector_.Detect(event);
    ndk_helper::GESTURE_STATE tapState = eng->tap_detector_.Detect(event);
    ndk_helper::GESTURE_STATE dragState = eng->drag_detector_.Detect(event);
    ndk_helper::GESTURE_STATE pinchState = eng->pinch_detector_.Detect(event);

    // Double tap detector has a priority over other detectors
    if (doubleTapState == ndk_helper::GESTURE_STATE_ACTION) {
      // Detect double tap
      eng->tap_camera_.Reset(true);
      double_tap = true;
    } else if (tapState == ndk_helper::GESTURE_STATE_ACTION) {
      ndk_helper::Vec2 tapPoint = eng->tap_detector_.GetPointers();
      tapPoint.Dump();
    } else {
      // Handle drag state
      if (dragState & ndk_helper::GESTURE_STATE_START) {
        // Otherwise, start dragging
        ndk_helper::Vec2 v;
        eng->drag_detector_.GetPointer(v);
        eng->TransformPosition(v);
        eng->tap_camera_.BeginDrag(v);
      } else if (dragState & ndk_helper::GESTURE_STATE_MOVE) {
        ndk_helper::Vec2 v;
        eng->drag_detector_.GetPointer(v);
        eng->TransformPosition(v);
        eng->tap_camera_.Drag(v);
      } else if (dragState & ndk_helper::GESTURE_STATE_END) {
        eng->tap_camera_.EndDrag();
      }

      // Handle pinch state
      if (pinchState & ndk_helper::GESTURE_STATE_START) {
        // Start new pinch
        ndk_helper::Vec2 v1;
        ndk_helper::Vec2 v2;
        eng->pinch_detector_.GetPointers(v1, v2);
        eng->TransformPosition(v1);
        eng->TransformPosition(v2);
        eng->tap_camera_.BeginPinch(v1, v2);
      } else if (pinchState & ndk_helper::GESTURE_STATE_MOVE) {
        // Multi touch
        // Start new pinch
        ndk_helper::Vec2 v1;
        ndk_helper::Vec2 v2;
        eng->pinch_detector_.GetPointers(v1, v2);
        eng->TransformPosition(v1);
        eng->TransformPosition(v2);
        eng->tap_camera_.Pinch(v1, v2);
      }
    }
    return 1;
  }
  return 0;
}