Struct runa_wayland_protocols::wayland::wl_pointer::v9::events::AxisRelativeDirection

pub struct AxisRelativeDirection {
    pub axis: Axis,
    pub direction: AxisRelativeDirection,
}

axis relative physical direction event

Relative directional information of the entity causing the axis motion.

For a wl_pointer.axis event, the wl_pointer.axis_relative_direction event specifies the movement direction of the entity causing the wl_pointer.axis event. For example:

• if a user’s fingers on a touchpad move down and this causes a wl_pointer.axis vertical_scroll down event, the physical direction is ‘identical’
• if a user’s fingers on a touchpad move down and this causes a wl_pointer.axis vertical_scroll up scroll up event (‘natural scrolling’), the physical direction is ‘inverted’.

A client may use this information to adjust scroll motion of components. Specifically, enabling natural scrolling causes the content to change direction compared to traditional scrolling. Some widgets like volume control sliders should usually match the physical direction regardless of whether natural scrolling is active. This event enables clients to match the scroll direction of a widget to the physical direction.

This event does not occur on its own, it is coupled with a wl_pointer.axis event that represents this axis value. The protocol guarantees that each axis_relative_direction event is always followed by exactly one axis event with the same axis number within the same wl_pointer.frame. Note that the protocol allows for other events to occur between the axis_relative_direction and its coupled axis event.

The axis number is identical to the axis number in the associated axis event.

The order of wl_pointer.axis_relative_direction, wl_pointer.axis_discrete and wl_pointer.axis_source is not guaranteed.

Fields

axis: Axis

direction: AxisRelativeDirection

Implementations

impl AxisRelativeDirection

pub const OPCODE: u16 = 10u16

Trait Implementations

impl Clone for AxisRelativeDirection

fn clone(&self) -> AxisRelativeDirection

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for AxisRelativeDirection

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

Formats the value using the given formatter.

impl<'a> Deserialize<'a> for AxisRelativeDirection

fn deserialize(data: &'a [u8], fds: &'a [RawFd]) -> Result<Self, Error>

Deserialize from the given buffer. Returns deserialized message, and number of bytes and file descriptors consumed, respectively.

impl PartialEq<AxisRelativeDirection> for AxisRelativeDirection

fn eq(&self, other: &AxisRelativeDirection) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for AxisRelativeDirection

fn serialize<Fds: Extend<OwnedFd>>(self, buf: &mut BytesMut, fds: &mut Fds)

Serialize into the buffered writer. This function returns no errors, failures in seializing are generally program errors, and triggers panicking.

fn len(&self) -> u16

How many bytes will this message serialize to. Including the 8 byte header.

fn nfds(&self) -> u8

How many file descriptors will this message serialize to.

impl Copy for AxisRelativeDirection

impl Eq for AxisRelativeDirection

impl StructuralEq for AxisRelativeDirection

impl StructuralPartialEq for AxisRelativeDirection