Enum Request

#[non_exhaustive]
pub enum Request<'a> {
    SetCursor {
        serial: u32,
        surface: Option<WlSurface>,
        hotspot_x: i32,
        hotspot_y: i32,
    },
    Destroy,
}

Available on crate feature client only.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

SetCursor

set the tablet tool’s surface

Sets the surface of the cursor used for this tool on the given tablet. This request only takes effect if the tool is in proximity of one of the requesting client’s surfaces or the surface parameter is the current pointer surface. If there was a previous surface set with this request it is replaced. If surface is NULL, the cursor image is hidden.

The parameters hotspot_x and hotspot_y define the position of the pointer surface relative to the pointer location. Its top-left corner is always at (x, y) - (hotspot_x, hotspot_y), where (x, y) are the coordinates of the pointer location, in surface-local coordinates.

On surface.attach requests to the pointer surface, hotspot_x and hotspot_y are decremented by the x and y parameters passed to the request. Attach must be confirmed by wl_surface.commit as usual.

The hotspot can also be updated by passing the currently set pointer surface to this request with new values for hotspot_x and hotspot_y.

The current and pending input regions of the wl_surface are cleared, and wl_surface.set_input_region is ignored until the wl_surface is no longer used as the cursor. When the use as a cursor ends, the current and pending input regions become undefined, and the wl_surface is unmapped.

This request gives the surface the role of a cursor. The role assigned by this request is the same as assigned by wl_pointer.set_cursor meaning the same surface can be used both as a wl_pointer cursor and a wp_tablet cursor. If the surface already has another role, it raises a protocol error. The surface may be used on multiple tablets and across multiple seats.

Fields

serial: u32

serial of the enter event

surface: Option<WlSurface>

hotspot_x: i32

surface-local x coordinate

hotspot_y: i32

surface-local y coordinate

Destroy

destroy the tool object

This destroys the client’s resource for this tool object.

This is a destructor, once sent this object cannot be used any longer.

Implementations

impl<'a> Request<'a>

pub fn opcode(&self) -> u16

Get the opcode number of this message

Trait Implementations

impl<'a> Debug for Request<'a>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.