SDL mouse driver ignores touchscreen events

[stawnPTL]

We're using the SDL display and mouse drivers. We had naively assumed that if the UI worked with a mouse then it'd work with a touchscreen, however touchscreen events are completely ignored.

In our use case I fixed this by adding the following to mouse_handler(), but not sure if this is the correct general solution. Maybe you'd prefer it if this went into a separate touchscreen driver.

        case SDL_FINGERUP:
            left_button_down = false;
            last_x = LV_HOR_RES_MAX * event->tfinger.x / MONITOR_ZOOM;
            last_y = LV_VER_RES_MAX * event->tfinger.y / MONITOR_ZOOM;
            break;
        case SDL_FINGERDOWN:
            left_button_down = true;
            last_x = LV_HOR_RES_MAX * event->tfinger.x / MONITOR_ZOOM;
            last_y = LV_VER_RES_MAX * event->tfinger.y / MONITOR_ZOOM;
            break;
        case SDL_FINGERMOTION:
            last_x = LV_HOR_RES_MAX * event->tfinger.x / MONITOR_ZOOM;
            last_y = LV_VER_RES_MAX * event->tfinger.y / MONITOR_ZOOM;
            break;

[embeddedt]

Hmm, that's interesting. I thought that mouse events would still be emulated for compatibility purposes.

I think your solution is reasonable and shouldn't break anything on non-touchscreen devices.

[kisvegabor]

I think it's fine to add it to the mouse driver for simplicity.

Can you send a Pull request?