Implement block-out-from window rule, fix alpha on window screenshots

niri-config/src/lib.rs

@@ -699,6 +699,8 @@ pub struct WindowRule {
     pub draw_border_with_background: Option<bool>,
     #[knuffel(child, unwrap(argument))]
     pub opacity: Option<f32>,
+    #[knuffel(child, unwrap(argument))]
+    pub block_out_from: Option<BlockOutFrom>,
 }
 
 // Remember to update the PartialEq impl when adding fields!
@@ -723,6 +725,12 @@ impl PartialEq for Match {
     }
 }
 
+#[derive(knuffel::DecodeScalar, Debug, Clone, Copy, PartialEq, Eq)]
+pub enum BlockOutFrom {
+    Screencast,
+    ScreenCapture,
+}
+
 #[derive(Debug, Default, PartialEq)]
 pub struct Binds(pub Vec<Bind>);
 
@@ -915,6 +923,8 @@ impl From<niri_ipc::Action> for Action {
 
 #[derive(knuffel::Decode, Debug, Default, PartialEq)]
 pub struct DebugConfig {
+    #[knuffel(child, unwrap(argument))]
+    pub preview_render: Option<PreviewRender>,
     #[knuffel(child)]
     pub dbus_interfaces_in_non_session_instances: bool,
     #[knuffel(child)]
@@ -931,6 +941,12 @@ pub struct DebugConfig {
     pub emulate_zero_presentation_time: bool,
 }
 
+#[derive(knuffel::DecodeScalar, Debug, Clone, Copy, PartialEq, Eq)]
+pub enum PreviewRender {
+    Screencast,
+    ScreenCapture,
+}
+
 impl Config {
     pub fn load(path: &Path) -> miette::Result<Self> {
         let _span = tracy_client::span!("Config::load");