smithay/anvil/src/output_map.rs

510 lines
18 KiB
Rust

use std::{cell::RefCell, rc::Rc};
use smithay::{
reexports::{
wayland_protocols::xdg_shell::server::xdg_toplevel,
wayland_server::{
protocol::{
wl_output,
wl_surface::{self, WlSurface},
},
Display, Global, UserDataMap,
},
},
utils::{Logical, Point, Rectangle, Size},
wayland::{
compositor::{with_surface_tree_downward, SubsurfaceCachedState, TraversalAction},
output::{self, Mode, PhysicalProperties},
},
};
use crate::shell::SurfaceData;
#[derive(Debug)]
pub struct Output {
name: String,
output: output::Output,
global: Option<Global<wl_output::WlOutput>>,
surfaces: Vec<WlSurface>,
layer_surfaces: RefCell<Vec<wl_surface::WlSurface>>,
current_mode: Mode,
scale: f32,
output_scale: i32,
location: Point<i32, Logical>,
userdata: UserDataMap,
}
impl Output {
fn new<N>(
name: N,
location: Point<i32, Logical>,
display: &mut Display,
physical: PhysicalProperties,
mode: Mode,
logger: slog::Logger,
) -> Self
where
N: AsRef<str>,
{
let (output, global) = output::Output::new(display, name.as_ref().into(), physical, logger);
let scale = std::env::var(format!("ANVIL_SCALE_{}", name.as_ref()))
.ok()
.and_then(|s| s.parse::<f32>().ok())
.unwrap_or(1.0)
.max(1.0);
let output_scale = scale.round() as i32;
output.change_current_state(Some(mode), None, Some(output_scale), Some(location));
output.set_preferred(mode);
Self {
name: name.as_ref().to_owned(),
global: Some(global),
output,
location,
surfaces: Vec::new(),
layer_surfaces: Default::default(),
current_mode: mode,
scale,
output_scale,
userdata: Default::default(),
}
}
pub fn userdata(&self) -> &UserDataMap {
&self.userdata
}
pub fn geometry(&self) -> Rectangle<i32, Logical> {
let loc = self.location();
let size = self.size();
Rectangle { loc, size }
}
pub fn size(&self) -> Size<i32, Logical> {
self.current_mode
.size
.to_f64()
.to_logical(self.scale as f64)
.to_i32_round()
}
pub fn location(&self) -> Point<i32, Logical> {
self.location
}
pub fn scale(&self) -> f32 {
self.scale
}
pub fn name(&self) -> &str {
self.name.as_str()
}
pub fn current_mode(&self) -> Mode {
self.current_mode
}
/// Add a layer surface to this output
pub fn add_layer_surface(&self, layer: wl_surface::WlSurface) {
self.layer_surfaces.borrow_mut().push(layer);
}
/// Get all layer surfaces assigned to this output
pub fn layer_surfaces(&self) -> Vec<wl_surface::WlSurface> {
self.layer_surfaces.borrow().iter().cloned().collect()
}
}
impl Drop for Output {
fn drop(&mut self) {
self.global.take().unwrap().destroy();
}
}
#[derive(Debug)]
pub struct OutputMap {
display: Rc<RefCell<Display>>,
outputs: Vec<Output>,
window_map: Rc<RefCell<crate::window_map::WindowMap>>,
logger: slog::Logger,
}
impl OutputMap {
pub fn new(
display: Rc<RefCell<Display>>,
window_map: Rc<RefCell<crate::window_map::WindowMap>>,
logger: ::slog::Logger,
) -> Self {
Self {
display,
outputs: Vec::new(),
window_map,
logger,
}
}
pub fn arrange(&mut self) {
// First recalculate the outputs location
let mut output_x = 0;
for output in self.outputs.iter_mut() {
let output_x_shift = output_x - output.location.x;
// If the scale changed we shift all windows on that output
// so that the location of the window will stay the same on screen
if output_x_shift != 0 {
let mut window_map = self.window_map.borrow_mut();
for surface in output.surfaces.iter() {
let toplevel = window_map.find(surface);
if let Some(toplevel) = toplevel {
let current_location = window_map.location(&toplevel);
if let Some(mut location) = current_location {
if output.geometry().contains(location) {
location.x += output_x_shift;
window_map.set_location(&toplevel, location);
}
}
}
}
}
output.location.x = output_x;
output.location.y = 0;
output
.output
.change_current_state(None, None, None, Some(output.location));
output_x += output.size().w;
}
// Check if any windows are now out of outputs range
// and move them to the primary output
let primary_output_location = self.with_primary().map(|o| o.location()).unwrap_or_default();
let mut window_map = self.window_map.borrow_mut();
// TODO: This is a bit unfortunate, we save the windows in a temp vector
// cause we can not call window_map.set_location within the closure.
let mut windows_to_move = Vec::new();
window_map.with_windows_from_bottom_to_top(|kind, _, &bbox| {
let within_outputs = self.outputs.iter().any(|o| o.geometry().overlaps(bbox));
if !within_outputs {
windows_to_move.push((kind.to_owned(), primary_output_location));
}
});
for (window, location) in windows_to_move.drain(..) {
window_map.set_location(&window, location);
}
// Update the size and location for maximized and fullscreen windows
window_map.with_windows_from_bottom_to_top(|kind, location, _| {
if let crate::window_map::Kind::Xdg(xdg) = kind {
if let Some(state) = xdg.current_state() {
if state.states.contains(xdg_toplevel::State::Maximized)
|| state.states.contains(xdg_toplevel::State::Fullscreen)
{
let output_geometry = if let Some(output) = state.fullscreen_output.as_ref() {
self.find_by_output(output).map(|o| o.geometry())
} else {
self.find_by_position(location).map(|o| o.geometry())
};
if let Some(geometry) = output_geometry {
if location != geometry.loc {
windows_to_move.push((kind.to_owned(), geometry.loc));
}
let res = xdg.with_pending_state(|pending_state| {
pending_state.size = Some(geometry.size);
});
if res.is_ok() {
xdg.send_configure();
}
}
}
}
}
});
for (window, location) in windows_to_move.drain(..) {
window_map.set_location(&window, location);
}
for output in self.outputs.iter() {
window_map.layers.arange_layers(output);
}
}
pub fn add<N>(&mut self, name: N, physical: PhysicalProperties, mode: Mode) -> &Output
where
N: AsRef<str>,
{
// Append the output to the end of the existing
// outputs by placing it after the current overall
// width
let location = (self.width(), 0);
let output = Output::new(
name,
location.into(),
&mut *self.display.borrow_mut(),
physical,
mode,
self.logger.clone(),
);
self.outputs.push(output);
// We call arrange here albeit the output is only appended and
// this would not affect windows, but arrange could re-organize
// outputs from a configuration.
self.arrange();
self.outputs.last().unwrap()
}
pub fn retain<F>(&mut self, f: F)
where
F: FnMut(&Output) -> bool,
{
self.outputs.retain(f);
self.arrange();
}
pub fn width(&self) -> i32 {
// This is a simplification, we only arrange the outputs on the y axis side-by-side
// so that the total width is simply the sum of all output widths.
self.outputs.iter().fold(0, |acc, output| acc + output.size().w)
}
pub fn height(&self, x: i32) -> Option<i32> {
// This is a simplification, we only arrange the outputs on the y axis side-by-side
self.outputs
.iter()
.find(|output| {
let geometry = output.geometry();
x >= geometry.loc.x && x < (geometry.loc.x + geometry.size.w)
})
.map(|output| output.size().h)
}
pub fn is_empty(&self) -> bool {
self.outputs.is_empty()
}
pub fn with_primary(&self) -> Option<&Output> {
self.outputs.get(0)
}
pub fn find<F>(&self, f: F) -> Option<&Output>
where
F: FnMut(&&Output) -> bool,
{
self.outputs.iter().find(f)
}
pub fn find_by_output(&self, output: &wl_output::WlOutput) -> Option<&Output> {
self.find(|o| o.output.owns(output))
}
pub fn find_by_layer_surface(&self, surface: &wl_surface::WlSurface) -> Option<&Output> {
self.find(|o| {
o.layer_surfaces
.borrow()
.iter()
.any(|s| s.as_ref().equals(surface.as_ref()))
})
}
pub fn find_by_name<N>(&self, name: N) -> Option<&Output>
where
N: AsRef<str>,
{
self.find(|o| o.name == name.as_ref())
}
pub fn find_by_position(&self, position: Point<i32, Logical>) -> Option<&Output> {
self.find(|o| o.geometry().contains(position))
}
pub fn find_by_index(&self, index: usize) -> Option<&Output> {
self.outputs.get(index)
}
pub fn update<F>(&mut self, mode: Option<Mode>, scale: Option<f32>, mut f: F)
where
F: FnMut(&Output) -> bool,
{
let output = self.outputs.iter_mut().find(|o| f(&**o));
if let Some(output) = output {
if let Some(mode) = mode {
output.output.delete_mode(output.current_mode);
output
.output
.change_current_state(Some(mode), None, Some(output.output_scale), None);
output.output.set_preferred(mode);
output.current_mode = mode;
}
if let Some(scale) = scale {
// Calculate in which direction the scale changed
let rescale = output.scale() / scale;
{
// We take the current location of our toplevels and move them
// to the same location using the new scale
let mut window_map = self.window_map.borrow_mut();
for surface in output.surfaces.iter() {
let toplevel = window_map.find(surface);
if let Some(toplevel) = toplevel {
let current_location = window_map.location(&toplevel);
if let Some(location) = current_location {
let output_geometry = output.geometry();
if output_geometry.contains(location) {
let mut toplevel_output_location =
(location - output_geometry.loc).to_f64();
toplevel_output_location.x *= rescale as f64;
toplevel_output_location.y *= rescale as f64;
window_map.set_location(
&toplevel,
output_geometry.loc + toplevel_output_location.to_i32_round(),
);
}
}
}
}
}
let output_scale = scale.round() as i32;
output.scale = scale;
if output.output_scale != output_scale {
output.output_scale = output_scale;
output.output.change_current_state(
Some(output.current_mode),
None,
Some(output_scale),
None,
);
}
}
}
self.arrange();
}
pub fn update_by_name<N: AsRef<str>>(&mut self, mode: Option<Mode>, scale: Option<f32>, name: N) {
self.update(mode, scale, |o| o.name() == name.as_ref())
}
pub fn update_scale_by_name<N: AsRef<str>>(&mut self, scale: f32, name: N) {
self.update_by_name(None, Some(scale), name)
}
pub fn update_mode_by_name<N: AsRef<str>>(&mut self, mode: Mode, name: N) {
self.update_by_name(Some(mode), None, name)
}
pub fn refresh(&mut self) {
// Clean-up dead surfaces
self.outputs.iter_mut().for_each(|o| {
o.surfaces.retain(|s| s.as_ref().is_alive());
o.layer_surfaces.borrow_mut().retain(|s| s.as_ref().is_alive());
});
let window_map = self.window_map.clone();
window_map
.borrow()
.with_windows_from_bottom_to_top(|kind, location, &bbox| {
for output in self.outputs.iter_mut() {
// Check if the bounding box of the toplevel intersects with
// the output, if not no surface in the tree can intersect with
// the output.
if !output.geometry().overlaps(bbox) {
if let Some(surface) = kind.get_surface() {
with_surface_tree_downward(
surface,
(),
|_, _, _| TraversalAction::DoChildren(()),
|wl_surface, _, _| {
if output.surfaces.contains(wl_surface) {
output.output.leave(wl_surface);
output.surfaces.retain(|s| s != wl_surface);
}
},
|_, _, _| true,
)
}
continue;
}
if let Some(surface) = kind.get_surface() {
with_surface_tree_downward(
surface,
location,
|_, states, location| {
let mut location = *location;
let data = states.data_map.get::<RefCell<SurfaceData>>();
if data.is_some() {
if states.role == Some("subsurface") {
let current = states.cached_state.current::<SubsurfaceCachedState>();
location += current.location;
}
TraversalAction::DoChildren(location)
} else {
// If the parent surface is unmapped, then the child surfaces are hidden as
// well, no need to consider them here.
TraversalAction::SkipChildren
}
},
|wl_surface, states, &loc| {
let data = states.data_map.get::<RefCell<SurfaceData>>();
if let Some(size) = data.and_then(|d| d.borrow().size()) {
let surface_rectangle = Rectangle { loc, size };
if output.geometry().overlaps(surface_rectangle) {
// We found a matching output, check if we already sent enter
if !output.surfaces.contains(wl_surface) {
output.output.enter(wl_surface);
output.surfaces.push(wl_surface.clone());
}
} else {
// Surface does not match output, if we sent enter earlier
// we should now send leave
if output.surfaces.contains(wl_surface) {
output.output.leave(wl_surface);
output.surfaces.retain(|s| s != wl_surface);
}
}
} else {
// Maybe the the surface got unmapped, send leave on output
if output.surfaces.contains(wl_surface) {
output.output.leave(wl_surface);
output.surfaces.retain(|s| s != wl_surface);
}
}
},
|_, _, _| true,
)
}
}
});
}
}