Implement window rule reloading and min/max size rules

src/niri.rs

@@ -114,7 +114,7 @@ use crate::utils::spawning::CHILD_ENV;
 use crate::utils::{
     center, center_f64, get_monotonic_time, make_screenshot_path, output_size, write_png_rgba8,
 };
-use crate::window::{Mapped, Unmapped};
+use crate::window::{InitialConfigureState, Mapped, ResolvedWindowRules, Unmapped};
 use crate::{animation, niri_render_elements};
 
 const CLEAR_COLOR: [f32; 4] = [0.2, 0.2, 0.2, 1.];
@@ -761,6 +761,7 @@ impl State {
         let mut reload_xkb = None;
         let mut libinput_config_changed = false;
         let mut output_config_changed = false;
+        let mut window_rules_changed = false;
         let mut old_config = self.niri.config.borrow_mut();
 
         // Reload the cursor.
@@ -802,6 +803,10 @@ impl State {
             self.niri.hotkey_overlay.on_hotkey_config_updated();
         }
 
+        if config.window_rules != old_config.window_rules {
+            window_rules_changed = true;
+        }
+
         *old_config = config;
 
         // Release the borrow.
@@ -865,6 +870,30 @@ impl State {
             }
         }
 
+        if window_rules_changed {
+            let _span = tracy_client::span!("recompute window rules");
+
+            let window_rules = &self.niri.config.borrow().window_rules;
+
+            for unmapped in self.niri.unmapped_windows.values_mut() {
+                if let InitialConfigureState::Configured { rules, .. } = &mut unmapped.state {
+                    *rules = ResolvedWindowRules::compute(
+                        window_rules,
+                        unmapped.window.toplevel().expect("no X11 support"),
+                    );
+                }
+            }
+
+            let mut windows = vec![];
+            self.niri.layout.with_windows_mut(|mapped, _| {
+                mapped.rules = ResolvedWindowRules::compute(window_rules, mapped.toplevel());
+                windows.push(mapped.window.clone());
+            });
+            for win in windows {
+                self.niri.layout.update_window(&win);
+            }
+        }
+
         // Can't really update xdg-decoration settings since we have to hide the globals for CSD
         // due to the SDL2 bug... I don't imagine clients are prepared for the xdg-decoration
         // global suddenly appearing? Either way, right now it's live-reloaded in a sense that new