Struct wlroots::backend::Headless

pub struct Headless { /* fields omitted */ }

In this backend the only resource the compositor uses is the Wayland file descriptor. It doesn't try to grab actual keyboard/pointers and it doesn't render anything.

This backend is useful for testing as you can easily add "fake" inputs and outputs.

Methods

impl Headless

pub unsafe fn new(     display: *mut wl_display,     render_setup_func: Option<UnsafeRenderSetupFunction> ) -> Self

Creates a headless backend.

A headless backend has no outputs or inputs by default.

pub fn add_output(&self, width: c_uint, height: c_uint) -> Option<Handle>

Create a new headless output backed by an in-memory EGL framebuffer.

You can read pixels from this framebuffer via Renderer::read_pixels but it is otherwise not displayed.

pub fn add_input_device(     &self,     input_type: wlr_input_device_type ) -> Option<Handle>

Creates a new input device.

The caller is responsible for manually raising any event signals on the new input device if it wants to simulate input events.

pub fn is_headless_input_device(&self, input_device: &Device) -> bool

pub fn is_headless_output(&self, output: &Output) -> bool

pub unsafe fn as_ptr(&self) -> *mut wlr_backend

Trait Implementations

impl Eq for Headless

impl PartialEq<Headless> for Headless

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

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

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

This method tests for !=.

impl Hash for Headless

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given [Hasher].

fn hash_slice<H>(data: &[Self], state: &mut H) where     H: Hasher,

Feeds a slice of this type into the given [Hasher].

impl Debug for Headless

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

Formats the value using the given formatter.