cli: add randr subcommand

src/backend.rs

@@ -79,7 +79,12 @@ pub trait Connector {
     fn on_change(&self, cb: Rc<dyn Fn()>);
     fn damage(&self);
     fn drm_dev(&self) -> Option<DrmDeviceId>;
-    fn set_enabled(&self, enabled: bool);
+    fn enabled(&self) -> bool {
+        true
+    }
+    fn set_enabled(&self, enabled: bool) {
+        let _ = enabled;
+    }
     fn drm_feedback(&self) -> Option<Rc<DrmFeedback>> {
         None
     }
@@ -232,4 +237,5 @@ pub trait BackendDrmDevice {
     fn gtx_api(&self) -> GfxApi;
     fn version(&self) -> Result<DrmVersion, DrmError>;
     fn set_direct_scanout_enabled(&self, enabled: bool);
+    fn is_render_device(&self) -> bool;
 }

src/backends/dummy.rs

@@ -53,10 +53,6 @@ impl Connector for DummyOutput {
         None
     }
 
-    fn set_enabled(&self, _enabled: bool) {
-        // nothing
-    }
-
     fn set_mode(&self, _mode: Mode) {
         // nothing
     }

src/backends/metal/video.rs

@@ -130,6 +130,10 @@ impl BackendDrmDevice for MetalDrmDevice {
     fn set_direct_scanout_enabled(&self, enabled: bool) {
         self.direct_scanout_enabled.set(Some(enabled));
     }
+
+    fn is_render_device(&self) -> bool {
+        Some(self.id) == self.backend.ctx.get().map(|c| c.dev_id)
+    }
 }
 
 pub struct HandleEvents {
@@ -846,6 +850,10 @@ impl Connector for MetalConnector {
         Some(self.dev.id)
     }
 
+    fn enabled(&self) -> bool {
+        self.enabled.get()
+    }
+
     fn set_enabled(&self, enabled: bool) {
         if self.enabled.replace(enabled) != enabled {
             if self.display.borrow_mut().connection == ConnectorStatus::Connected {

src/backends/x.rs

@@ -994,6 +994,10 @@ impl BackendDrmDevice for XDrmDevice {
     fn set_direct_scanout_enabled(&self, enabled: bool) {
         let _ = enabled;
     }
+
+    fn is_render_device(&self) -> bool {
+        true
+    }
 }
 
 struct XOutput {
@@ -1055,10 +1059,6 @@ impl Connector for XOutput {
         Some(self.backend.drm_device_id)
     }
 
-    fn set_enabled(&self, _enabled: bool) {
-        // nothing
-    }
-
     fn set_mode(&self, _mode: Mode) {
         log::warn!("X backend doesn't support changing the connector mode");
     }

src/cli.rs

@@ -2,14 +2,15 @@ mod generate;
 mod idle;
 mod log;
 mod quit;
+mod randr;
 mod run_privileged;
 pub mod screenshot;
 mod seat_test;
 mod set_log_level;
 mod unlock;
 
 use {
-    crate::{compositor::start_compositor, portal},
+    crate::{cli::randr::RandrArgs, compositor::start_compositor, portal},
     ::log::Level,
     clap::{Args, Parser, Subcommand, ValueEnum},
     clap_complete::Shell,
@@ -55,6 +56,8 @@ pub enum Cmd {
     SeatTest(SeatTestArgs),
     /// Run the desktop portal.
     Portal,
+    /// Inspect/modify graphics card and connector settings.
+    Randr(RandrArgs),
     #[cfg(feature = "it")]
     RunTests,
 }
@@ -217,6 +220,7 @@ pub fn main() {
         Cmd::RunPrivileged(a) => run_privileged::main(cli.global, a),
         Cmd::SeatTest(a) => seat_test::main(cli.global, a),
         Cmd::Portal => portal::run(cli.global),
+        Cmd::Randr(a) => randr::main(cli.global, a),
         #[cfg(feature = "it")]
         Cmd::RunTests => crate::it::run_tests(),
     }