1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759
use std::{
any::Any,
fmt::{self, Display, Formatter},
sync::{Arc, Mutex, Weak},
};
use log::warn;
use wayland_client::{
globals::GlobalList,
protocol::wl_output::{self, Subpixel, Transform},
Connection, Dispatch, Proxy, QueueHandle, WEnum,
};
use wayland_protocols::xdg::xdg_output::zv1::client::{
zxdg_output_manager_v1::{self, ZxdgOutputManagerV1},
zxdg_output_v1,
};
use crate::{
globals::GlobalData,
registry::{GlobalProxy, ProvidesRegistryState, RegistryHandler},
};
/// Simplified event handler for [`wl_output::WlOutput`].
/// See [`OutputState`].
pub trait OutputHandler: Sized {
fn output_state(&mut self) -> &mut OutputState;
/// A new output has been advertised.
fn new_output(
&mut self,
conn: &Connection,
qh: &QueueHandle<Self>,
output: wl_output::WlOutput,
);
/// An existing output has changed.
fn update_output(
&mut self,
conn: &Connection,
qh: &QueueHandle<Self>,
output: wl_output::WlOutput,
);
/// An output is no longer advertised.
///
/// The info passed to this function was the state of the output before destruction.
fn output_destroyed(
&mut self,
conn: &Connection,
qh: &QueueHandle<Self>,
output: wl_output::WlOutput,
);
}
type ScaleWatcherFn =
dyn Fn(&mut dyn Any, &Connection, &dyn Any, &wl_output::WlOutput) + Send + Sync;
/// A handler for delegating [`wl_output::WlOutput`](wayland_client::protocol::wl_output::WlOutput).
///
/// When implementing [`ProvidesRegistryState`],
/// [`registry_handlers!`](crate::registry_handlers) may be used to delegate all
/// output events to an instance of this type. It will internally store the internal state of all
/// outputs and allow querying them via the `OutputState::outputs` and `OutputState::info` methods.
///
/// ## Example
///
/// ```
/// use smithay_client_toolkit::output::{OutputHandler,OutputState};
/// use smithay_client_toolkit::registry::{ProvidesRegistryState,RegistryHandler};
/// # use smithay_client_toolkit::registry::RegistryState;
/// use smithay_client_toolkit::{registry_handlers,delegate_output, delegate_registry};
/// use wayland_client::{Connection,QueueHandle,protocol::wl_output};
///
/// struct ExampleState {
/// # registry_state: RegistryState,
/// // The state is usually kept as an attribute of the application state.
/// output_state: OutputState,
/// }
///
/// // When using `OutputState`, an implementation of `OutputHandler` should be supplied:
/// impl OutputHandler for ExampleState {
/// // Custom implementation handling output events here ...
/// # fn output_state(&mut self) -> &mut OutputState {
/// # &mut self.output_state
/// # }
/// #
/// # fn new_output(&mut self, _: &Connection, _: &QueueHandle<Self>, _: wl_output::WlOutput) {
/// # }
/// #
/// # fn update_output(&mut self, _: &Connection, _: &QueueHandle<Self>, _: wl_output::WlOutput) {
/// # }
/// #
/// # fn output_destroyed(&mut self, _: &Connection, _: &QueueHandle<Self>, _: wl_output::WlOutput) {
/// # }
/// }
///
/// // Delegating to the registry is required to use `OutputState`.
/// delegate_registry!(ExampleState);
/// delegate_output!(ExampleState);
///
/// impl ProvidesRegistryState for ExampleState {
/// # fn registry(&mut self) -> &mut RegistryState {
/// # &mut self.registry_state
/// # }
/// // ...
///
/// registry_handlers!(OutputState);
/// }
/// ```
pub struct OutputState {
xdg: GlobalProxy<ZxdgOutputManagerV1>,
outputs: Vec<OutputInner>,
callbacks: Vec<Weak<ScaleWatcherFn>>,
}
impl fmt::Debug for OutputState {
fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
fmt.debug_struct("OutputState")
.field("xdg", &self.xdg)
.field("outputs", &self.outputs)
.field("callbacks", &self.callbacks.len())
.finish()
}
}
pub struct ScaleWatcherHandle(Arc<ScaleWatcherFn>);
impl fmt::Debug for ScaleWatcherHandle {
fn fmt(&self, fmt: &mut fmt::Formatter) -> fmt::Result {
fmt.debug_struct("ScaleWatcherHandle").finish_non_exhaustive()
}
}
impl OutputState {
pub fn new<
D: Dispatch<wl_output::WlOutput, OutputData>
+ Dispatch<zxdg_output_v1::ZxdgOutputV1, OutputData>
+ Dispatch<zxdg_output_manager_v1::ZxdgOutputManagerV1, GlobalData>
+ 'static,
>(
global_list: &GlobalList,
qh: &QueueHandle<D>,
) -> OutputState {
let (outputs, xdg) = global_list.contents().with_list(|globals| {
let outputs: Vec<wl_output::WlOutput> = crate::registry::bind_all(
global_list.registry(),
globals,
qh,
1..=4,
OutputData::new,
)
.expect("Failed to bind global");
let xdg =
crate::registry::bind_one(global_list.registry(), globals, qh, 1..=3, GlobalData)
.into();
(outputs, xdg)
});
let mut output_state = OutputState { xdg, outputs: vec![], callbacks: vec![] };
for wl_output in outputs {
output_state.setup(wl_output, qh);
}
output_state
}
/// Returns an iterator over all outputs.
pub fn outputs(&self) -> impl Iterator<Item = wl_output::WlOutput> {
self.outputs.iter().map(|output| &output.wl_output).cloned().collect::<Vec<_>>().into_iter()
}
/// Returns information about an output.
///
/// This may be none if the output has been destroyed or the compositor has not sent information about the
/// output yet.
pub fn info(&self, output: &wl_output::WlOutput) -> Option<OutputInfo> {
self.outputs
.iter()
.find(|inner| &inner.wl_output == output)
.and_then(|inner| inner.current_info.clone())
}
pub fn add_scale_watcher<F, D>(data: &mut D, f: F) -> ScaleWatcherHandle
where
D: OutputHandler + 'static,
F: Fn(&mut D, &Connection, &QueueHandle<D>, &wl_output::WlOutput) + Send + Sync + 'static,
{
let state = data.output_state();
let rv = ScaleWatcherHandle(Arc::new(move |data, conn, qh, output| {
if let (Some(data), Some(qh)) = (data.downcast_mut(), qh.downcast_ref()) {
f(data, conn, qh, output);
}
}));
state.callbacks.retain(|f| f.upgrade().is_some());
state.callbacks.push(Arc::downgrade(&rv.0));
rv
}
fn setup<D>(&mut self, wl_output: wl_output::WlOutput, qh: &QueueHandle<D>)
where
D: Dispatch<zxdg_output_v1::ZxdgOutputV1, OutputData> + 'static,
{
let data = wl_output.data::<OutputData>().unwrap().clone();
let pending_info = data.0.lock().unwrap().clone();
let name = pending_info.id;
let version = wl_output.version();
let pending_xdg = self.xdg.get().is_ok();
let xdg_output = if pending_xdg {
let xdg = self.xdg.get().unwrap();
Some(xdg.get_xdg_output(&wl_output, qh, data))
} else {
None
};
let inner = OutputInner {
name,
wl_output,
xdg_output,
just_created: true,
// wl_output::done was added in version 2.
// If we have an output at version 1, assume the data was already sent.
current_info: if version > 1 { None } else { Some(OutputInfo::new(name)) },
pending_info,
pending_wl: true,
pending_xdg,
};
self.outputs.push(inner);
}
}
#[derive(Debug, Clone)]
pub struct OutputData(Arc<Mutex<OutputInfo>>);
impl OutputData {
pub fn new(name: u32) -> OutputData {
OutputData(Arc::new(Mutex::new(OutputInfo::new(name))))
}
/// Get the output scale factor.
pub fn scale_factor(&self) -> i32 {
let guard = self.0.lock().unwrap();
guard.scale_factor
}
/// Get the output transform.
pub fn transform(&self) -> wl_output::Transform {
let guard = self.0.lock().unwrap();
guard.transform
}
/// Access the underlying [`OutputInfo`].
///
/// Reentrant calls within the `callback` will deadlock.
pub fn with_output_info<T, F: FnOnce(&OutputInfo) -> T>(&self, callback: F) -> T {
let guard = self.0.lock().unwrap();
callback(&guard)
}
}
#[derive(Debug, Clone)]
pub struct Mode {
/// Number of pixels of this mode in format `(width, height)`
///
/// for example `(1920, 1080)`
pub dimensions: (i32, i32),
/// Refresh rate for this mode.
///
/// The refresh rate is specified in terms of millihertz (mHz). To convert approximately to Hertz,
/// divide the value by 1000.
///
/// This value could be zero if an output has no correct refresh rate, such as a virtual output.
pub refresh_rate: i32,
/// Whether this is the current mode for this output.
///
/// Per the Wayland protocol, non-current modes are deprecated and clients should not rely on deprecated
/// modes.
pub current: bool,
/// Whether this is the preferred mode for this output.
pub preferred: bool,
}
impl Display for Mode {
fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
if self.current {
write!(f, "(current) ")?;
}
if self.preferred {
write!(f, "(preferred) ")?;
}
write!(
f,
"{}×{}px @ {}.{:03} Hz",
self.dimensions.0,
self.dimensions.1,
// Print the refresh rate in hertz since it is more familiar unit.
self.refresh_rate / 1000,
self.refresh_rate % 1000
)
}
}
/// Information about an output.
#[derive(Debug, Clone)]
#[non_exhaustive]
pub struct OutputInfo {
/// The id of the output.
///
/// This corresponds to the global `name` of the wl_output.
pub id: u32,
/// The model name of this output as advertised by the server.
pub model: String,
/// The make name of this output as advertised by the server.
pub make: String,
/// Location of the top-left corner of this output in compositor space.
///
/// Note that the compositor may decide to always report (0,0) if it decides clients are not allowed to
/// know this information.
pub location: (i32, i32),
/// Physical dimensions of this output, in millimeters.
///
/// This value may be set to (0, 0) if a physical size does not make sense for the output (e.g. projectors
/// and virtual outputs).
pub physical_size: (i32, i32),
/// The subpixel layout for this output.
pub subpixel: Subpixel,
/// The current transformation applied to this output
///
/// You can pre-render your buffers taking this information into account and advertising it via
/// `wl_buffer.set_transform` for better performance.
pub transform: Transform,
/// The scaling factor of this output
///
/// Any buffer whose scaling factor does not match the one of the output it is displayed on will be
/// rescaled accordingly.
///
/// For example, a buffer of scaling factor 1 will be doubled in size if the output scaling factor is 2.
///
/// You can pre-render your buffers taking this information into account and advertising it via
/// `wl_surface.set_buffer_scale` so you may advertise a higher detail image.
pub scale_factor: i32,
/// Possible modes for an output.
pub modes: Vec<Mode>,
/// Logical position in global compositor space
pub logical_position: Option<(i32, i32)>,
/// Logical size in global compositor space
pub logical_size: Option<(i32, i32)>,
/// The name of the this output as advertised by the surface.
///
/// Examples of names include 'HDMI-A-1', 'WL-1', 'X11-1', etc. However, do not assume that the name is a
/// reflection of an underlying DRM connector, X11 connection, etc.
///
/// Compositors are not required to provide a name for the output and the value may be [`None`].
///
/// The name will be [`None`] if the compositor does not support version 4 of the wl-output protocol or
/// version 2 of the zxdg-output-v1 protocol.
pub name: Option<String>,
/// The description of this output as advertised by the server
///
/// The description is a UTF-8 string with no convention defined for its contents. The description is not
/// guaranteed to be unique among all wl_output globals. Examples might include 'Foocorp 11" Display' or
/// 'Virtual X11 output via :1'.
///
/// Compositors are not required to provide a description of the output and the value may be [`None`].
///
/// The value will be [`None`] if the compositor does not support version 4 of the wl-output
/// protocol, version 2 of the zxdg-output-v1 protocol.
pub description: Option<String>,
}
#[macro_export]
macro_rules! delegate_output {
($(@<$( $lt:tt $( : $clt:tt $(+ $dlt:tt )* )? ),+>)? $ty: ty) => {
$crate::reexports::client::delegate_dispatch!($(@< $( $lt $( : $clt $(+ $dlt )* )? ),+ >)? $ty: [
$crate::reexports::client::protocol::wl_output::WlOutput: $crate::output::OutputData
] => $crate::output::OutputState);
$crate::reexports::client::delegate_dispatch!($(@< $( $lt $( : $clt $(+ $dlt )* )? ),+ >)? $ty: [
$crate::reexports::protocols::xdg::xdg_output::zv1::client::zxdg_output_manager_v1::ZxdgOutputManagerV1: $crate::globals::GlobalData
] => $crate::output::OutputState);
$crate::reexports::client::delegate_dispatch!($(@< $( $lt $( : $clt $(+ $dlt )* )? ),+ >)? $ty: [
$crate::reexports::protocols::xdg::xdg_output::zv1::client::zxdg_output_v1::ZxdgOutputV1: $crate::output::OutputData
] => $crate::output::OutputState);
};
}
impl<D> Dispatch<wl_output::WlOutput, OutputData, D> for OutputState
where
D: Dispatch<wl_output::WlOutput, OutputData> + OutputHandler + 'static,
{
fn event(
state: &mut D,
output: &wl_output::WlOutput,
event: wl_output::Event,
data: &OutputData,
conn: &Connection,
qh: &QueueHandle<D>,
) {
let inner = match state
.output_state()
.outputs
.iter_mut()
.find(|inner| &inner.wl_output == output)
{
Some(inner) => inner,
None => {
warn!("Received {event:?} for dead wl_output");
return;
}
};
match event {
wl_output::Event::Geometry {
x,
y,
physical_width,
physical_height,
subpixel,
make,
model,
transform,
} => {
inner.pending_info.location = (x, y);
inner.pending_info.physical_size = (physical_width, physical_height);
inner.pending_info.subpixel = match subpixel {
WEnum::Value(subpixel) => subpixel,
WEnum::Unknown(_) => todo!("Warn about invalid subpixel value"),
};
inner.pending_info.make = make;
inner.pending_info.model = model;
inner.pending_info.transform = match transform {
WEnum::Value(subpixel) => subpixel,
WEnum::Unknown(_) => todo!("Warn about invalid transform value"),
};
inner.pending_wl = true;
}
wl_output::Event::Mode { flags, width, height, refresh } => {
// Remove the old mode
inner.pending_info.modes.retain(|mode| {
mode.dimensions != (width, height) || mode.refresh_rate != refresh
});
let flags = match flags {
WEnum::Value(flags) => flags,
WEnum::Unknown(_) => panic!("Invalid flags"),
};
let current = flags.contains(wl_output::Mode::Current);
let preferred = flags.contains(wl_output::Mode::Preferred);
// Any mode that isn't current is deprecated, let's deprecate any existing modes that may be
// marked as current.
//
// If a new mode is advertised as preferred, then mark the existing preferred mode as not.
for mode in &mut inner.pending_info.modes {
// This mode is no longer preferred.
if preferred {
mode.preferred = false;
}
// This mode is no longer current.
if current {
mode.current = false;
}
}
// Now create the new mode.
inner.pending_info.modes.push(Mode {
dimensions: (width, height),
refresh_rate: refresh,
current,
preferred,
});
inner.pending_wl = true;
}
wl_output::Event::Scale { factor } => {
inner.pending_info.scale_factor = factor;
inner.pending_wl = true;
}
wl_output::Event::Name { name } => {
inner.pending_info.name = Some(name);
inner.pending_wl = true;
}
wl_output::Event::Description { description } => {
inner.pending_info.description = Some(description);
inner.pending_wl = true;
}
wl_output::Event::Done => {
let info = inner.pending_info.clone();
inner.current_info = Some(info.clone());
inner.pending_wl = false;
// Set the user data, see if we need to run scale callbacks
let run_callbacks = data.set(info);
// Don't call `new_output` until we have xdg output info
if !inner.pending_xdg {
if inner.just_created {
inner.just_created = false;
state.new_output(conn, qh, output.clone());
} else {
state.update_output(conn, qh, output.clone());
}
}
if run_callbacks {
let callbacks = state.output_state().callbacks.clone();
for cb in callbacks {
if let Some(cb) = cb.upgrade() {
cb(state, conn, qh, output);
}
}
}
}
_ => unreachable!(),
}
}
}
impl<D> Dispatch<zxdg_output_manager_v1::ZxdgOutputManagerV1, GlobalData, D> for OutputState
where
D: Dispatch<zxdg_output_manager_v1::ZxdgOutputManagerV1, GlobalData> + OutputHandler,
{
fn event(
_: &mut D,
_: &zxdg_output_manager_v1::ZxdgOutputManagerV1,
_: zxdg_output_manager_v1::Event,
_: &GlobalData,
_: &Connection,
_: &QueueHandle<D>,
) {
unreachable!("zxdg_output_manager_v1 has no events")
}
}
impl<D> Dispatch<zxdg_output_v1::ZxdgOutputV1, OutputData, D> for OutputState
where
D: Dispatch<zxdg_output_v1::ZxdgOutputV1, OutputData> + OutputHandler,
{
fn event(
state: &mut D,
output: &zxdg_output_v1::ZxdgOutputV1,
event: zxdg_output_v1::Event,
data: &OutputData,
conn: &Connection,
qh: &QueueHandle<D>,
) {
let inner = match state
.output_state()
.outputs
.iter_mut()
.find(|inner| inner.xdg_output.as_ref() == Some(output))
{
Some(inner) => inner,
None => {
warn!("Received {event:?} for dead xdg_output");
return;
}
};
// zxdg_output_v1::done is deprecated in version 3. So we only need
// to wait for wl_output::done, once we get any xdg output info.
if output.version() >= 3 {
inner.pending_xdg = false;
}
match event {
zxdg_output_v1::Event::LogicalPosition { x, y } => {
inner.pending_info.logical_position = Some((x, y));
if output.version() < 3 {
inner.pending_xdg = true;
}
}
zxdg_output_v1::Event::LogicalSize { width, height } => {
inner.pending_info.logical_size = Some((width, height));
if output.version() < 3 {
inner.pending_xdg = true;
}
}
zxdg_output_v1::Event::Name { name } => {
if inner.wl_output.version() < 4 {
inner.pending_info.name = Some(name);
}
if output.version() < 3 {
inner.pending_xdg = true;
}
}
zxdg_output_v1::Event::Description { description } => {
if inner.wl_output.version() < 4 {
inner.pending_info.description = Some(description);
}
if output.version() < 3 {
inner.pending_xdg = true;
}
}
zxdg_output_v1::Event::Done => {
// This event is deprecated starting in version 3, wl_output::done should be sent instead.
if output.version() < 3 {
let info = inner.pending_info.clone();
inner.current_info = Some(info.clone());
inner.pending_xdg = false;
// Set the user data
data.set(info);
let pending_wl = inner.pending_wl;
let just_created = inner.just_created;
let output = inner.wl_output.clone();
if just_created {
inner.just_created = false;
}
if !pending_wl {
if just_created {
state.new_output(conn, qh, output);
} else {
state.update_output(conn, qh, output);
}
}
}
}
_ => unreachable!(),
}
}
}
impl<D> RegistryHandler<D> for OutputState
where
D: Dispatch<wl_output::WlOutput, OutputData>
+ Dispatch<zxdg_output_v1::ZxdgOutputV1, OutputData>
+ Dispatch<zxdg_output_manager_v1::ZxdgOutputManagerV1, GlobalData>
+ OutputHandler
+ ProvidesRegistryState
+ 'static,
{
fn new_global(
data: &mut D,
_: &Connection,
qh: &QueueHandle<D>,
name: u32,
interface: &str,
_version: u32,
) {
if interface == "wl_output" {
let output = data
.registry()
.bind_specific(qh, name, 1..=4, OutputData::new(name))
.expect("Failed to bind global");
data.output_state().setup(output, qh);
}
}
fn remove_global(
data: &mut D,
conn: &Connection,
qh: &QueueHandle<D>,
name: u32,
interface: &str,
) {
if interface == "wl_output" {
let output = data
.output_state()
.outputs
.iter()
.position(|o| o.name == name)
.expect("Removed non-existing output");
let wl_output = data.output_state().outputs[output].wl_output.clone();
data.output_destroyed(conn, qh, wl_output);
let output = data.output_state().outputs.remove(output);
if let Some(xdg_output) = &output.xdg_output {
xdg_output.destroy();
}
if output.wl_output.version() >= 3 {
output.wl_output.release();
}
}
}
}
impl OutputInfo {
fn new(id: u32) -> OutputInfo {
OutputInfo {
id,
model: String::new(),
make: String::new(),
location: (0, 0),
physical_size: (0, 0),
subpixel: Subpixel::Unknown,
transform: Transform::Normal,
scale_factor: 1,
modes: vec![],
logical_position: None,
logical_size: None,
name: None,
description: None,
}
}
}
impl OutputData {
pub(crate) fn set(&self, info: OutputInfo) -> bool {
let mut guard = self.0.lock().unwrap();
let rv = guard.scale_factor != info.scale_factor;
*guard = info;
rv
}
}
#[derive(Debug)]
struct OutputInner {
/// The name of the wl_output global.
name: u32,
wl_output: wl_output::WlOutput,
xdg_output: Option<zxdg_output_v1::ZxdgOutputV1>,
/// Whether this output was just created and has not an event yet.
just_created: bool,
current_info: Option<OutputInfo>,
pending_info: OutputInfo,
pending_wl: bool,
pending_xdg: bool,
}