Enum wayland_protocols::unstable::tablet::v2::server::zwp_tablet_pad_strip_v2::Event

#[non_exhaustive]
pub enum Event {
    Source {
        source: Source,
    },
    Position {
        position: u32,
    },
    Stop,
    Frame {
        time: u32,
    },
}

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.

Source

Fields

source: Source

strip event source

Source information for strip events.

This event does not occur on its own. It is sent before a wp_tablet_pad_strip.frame event and carries the source information for all events within that frame.

The source specifies how this event was generated. If the source is wp_tablet_pad_strip.source.finger, a wp_tablet_pad_strip.stop event will be sent when the user lifts their finger off the device.

This event is optional. If the source is unknown for an interaction, no event is sent.

Position

Fields

position: u32

position changed

Sent whenever the position on a strip changes.

The position is normalized to a range of [0, 65535], the 0-value represents the top-most and/or left-most position of the strip in the pad’s current rotation.

Stop

interaction stopped

Stop notification for strip events.

For some wp_tablet_pad_strip.source types, a wp_tablet_pad_strip.stop event is sent to notify a client that the interaction with the strip has terminated. This enables the client to implement kinetic scrolling. See the wp_tablet_pad_strip.source documentation for information on when this event may be generated.

Any wp_tablet_pad_strip.position events with the same source after this event should be considered as the start of a new interaction.

Frame

Fields

time: u32

end of a strip event sequence

Indicates the end of a set of events that represent one logical hardware strip event. A client is expected to accumulate the data in all events within the frame before proceeding.

All wp_tablet_pad_strip events before a wp_tablet_pad_strip.frame event belong logically together. For example, on termination of a finger interaction on a strip the compositor will send a wp_tablet_pad_strip.source event, a wp_tablet_pad_strip.stop event and a wp_tablet_pad_strip.frame event.

A wp_tablet_pad_strip.frame event is sent for every logical event group, even if the group only contains a single wp_tablet_pad_strip event. Specifically, a client may get a sequence: position, frame, position, frame, etc.

Trait Implementations

impl Debug for Event

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

Formats the value using the given formatter.

impl MessageGroup for Event

const MESSAGES: &'static [MessageDesc] = _

Wire representation of this MessageGroup

type Map = ResourceMap

The wrapper type for ObjectMap allowing the mapping of Object and NewId arguments to the object map during parsing.

fn is_destructor(&self) -> bool

Whether this message is a destructor

fn opcode(&self) -> u16

The opcode of this message

fn since(&self) -> u32

The minimal object version for which this message exists

fn child<Meta: ObjectMetadata>(
    opcode: u16,
    version: u32,
    meta: &Meta
) -> Option<Object<Meta>>

Retrieve the child Object associated with this message if any

fn from_raw(msg: Message, map: &mut Self::Map) -> Result<Self, ()>

Construct a message from its raw representation

fn into_raw(self, sender_id: u32) -> Message

Turn this message into its raw representation

unsafe fn from_raw_c(
    obj: *mut c_void,
    opcode: u32,
    args: *const wl_argument
) -> Result<Event, ()>

Construct a message of this group from its C representation

fn as_raw_c_in<F, T>(self, f: F) -> T where
    F: FnOnce(u32, &mut [wl_argument]) -> T, 

Build a C representation of this message