Function sdlMouseWheelFilter

ddio/lnxmouse.cpp:346–395

}

int sdlMouseWheelFilter(SDL_Event const *event) {
  ASSERT(event->type == SDL_MOUSEWHEEL);

  const SDL_MouseWheelEvent *ev = &event->wheel;
  t_mse_event mevt;

  // !!! FIXME: this ignores horizontal wheels for now, since Descent3 doesn't currently have a concept of them
  // !!! FIXME: (vertical mouse wheels are represented as mouse buttons 4 and 5, incorrectly, on all platforms).
  // !!! FIXME: this will require improvements to the engine before this changes here, though.

  if (ev->y > 0) { /* Mouse scroll up */
    DDIO_mouse_state.btn_mask |= MOUSE_B5;
    DIM_buttons.down_count[4]++;
    DIM_buttons.time_down[4] = timer_GetTime();
    DIM_buttons.is_down[4] = true;
    mevt.btn = 4;
    mevt.state = true;
    MB_queue.send(mevt);

    // send an immediate release event, as if the "button" was clicked. !!! FIXME: this also needs improvements in the engine.
    // don't remove from btn_mask
    DIM_buttons.up_count[4]++;
    DIM_buttons.is_down[4] = false;
    DIM_buttons.time_up[4] = timer_GetTime();
    mevt.btn = 4;
    mevt.state = false;
    MB_queue.send(mevt);
    //		mprintf(0, "MOUSE Scrollwheel: Rolled Up\n");
  } else if (ev->y < 0) { /* Mouse scroll down */
    DDIO_mouse_state.btn_mask |= MOUSE_B6;
    DIM_buttons.down_count[5]++;
    DIM_buttons.time_down[5] = timer_GetTime();
    DIM_buttons.is_down[5] = true;
    mevt.btn = 5;
    mevt.state = true;
    MB_queue.send(mevt);

    // send an immediate release event, as if the "button" was clicked. !!! FIXME: this also needs improvements in the engine.
    // don't remove from btn_mask
    DIM_buttons.up_count[5]++;
    DIM_buttons.is_down[5] = false;
    DIM_buttons.time_up[5] = timer_GetTime();
    mevt.btn = 5;
    mevt.state = false;
    MB_queue.send(mevt);
    //		mprintf(0, "MOUSE Scrollwheel: Rolled Down\n");
  }

  return 0;
}

int sdlMouseMotionFilter(SDL_Event const *event) {
  /*