[PATCH v1] Added touch support to wayland backend

[Imran Zaman]

Can anyone please comment on it? :)

BR
imran

On Wed, Dec 17, 2014 at 4:11 PM, Imran Zaman <imran.zaman at gmail.com> wrote:

> Nested westons (with wayland backend as child weston) is one possible
> use case for the needed touch support.
>
> Signed-off-by: Imran Zaman <imran.zaman at gmail.com>
> ---
>  src/compositor-wayland.c | 59
> ++++++++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 59 insertions(+)
>
> diff --git a/src/compositor-wayland.c b/src/compositor-wayland.c
> index 65bce39..f125210 100644
> --- a/src/compositor-wayland.c
> +++ b/src/compositor-wayland.c
> @@ -1581,6 +1581,53 @@ static const struct wl_keyboard_listener
> keyboard_listener = {
>  };
>
>  static void
> +input_handle_touch_down(void *data, struct wl_touch *wl_touch,
> +                       uint32_t serial, uint32_t time,
> +                       struct wl_surface *surface, int32_t id, wl_fixed_t
> x_w,
> +                       wl_fixed_t y_w)
> +{
> +       struct wayland_input *input = data;
> +       notify_touch(&input->base, time, id, x_w, y_w, WL_TOUCH_DOWN);
> +}
> +
> +static void
> +input_handle_touch_up(void *data, struct wl_touch *wl_touch,
> +                     uint32_t serial, uint32_t time, int32_t id)
> +{
> +       struct wayland_input *input = data;
> +       notify_touch(&input->base, time, id, 0, 0, WL_TOUCH_UP);
> +}
> +
> +static void
> +input_handle_touch_motion(void *data, struct wl_touch *wl_touch,
> +                         uint32_t time, int32_t id, wl_fixed_t x_w,
> +                         wl_fixed_t y_w)
> +{
> +       struct wayland_input *input = data;
> +       notify_touch(&input->base, time, id, x_w, y_w, WL_TOUCH_MOTION);
> +}
> +
> +static void
> +input_handle_touch_frame(void *data, struct wl_touch *wl_touch)
> +{
> +       struct wayland_input *input = data;
> +       notify_touch_frame(&input->base);
> +}
> +
> +static void
> +input_handle_touch_cancel(void *data, struct wl_touch *wl_touch)
> +{
> +}
> +
> +static const struct wl_touch_listener touch_listener = {
> +               input_handle_touch_down,
> +               input_handle_touch_up,
> +               input_handle_touch_motion,
> +               input_handle_touch_frame,
> +               input_handle_touch_cancel,
> +};
> +
> +static void
>  input_handle_capabilities(void *data, struct wl_seat *seat,
>                           enum wl_seat_capability caps)
>  {
> @@ -1606,6 +1653,18 @@ input_handle_capabilities(void *data, struct
> wl_seat *seat,
>                 wl_keyboard_destroy(input->parent.keyboard);
>                 input->parent.keyboard = NULL;
>         }
> +
> +       if ((caps & WL_SEAT_CAPABILITY_TOUCH) && !input->parent.touch) {
> +               input->parent.touch = wl_seat_get_touch(seat);
> +               weston_seat_init_touch (&input->base);
> +               wl_touch_set_user_data(input->parent.touch, input);
> +               wl_touch_add_listener(input->parent.touch,
> +                               &touch_listener, input);
> +       } else if (!(caps & WL_SEAT_CAPABILITY_TOUCH) &&
> input->parent.touch) {
> +               weston_seat_release_touch (&input->base);
> +               wl_touch_destroy(input->parent.touch);
> +               input->parent.touch = NULL;
> +       }
>  }
>
>  static void
> --
> 1.9.1
>
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