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window-list: Fix live window previews

The wf-live-previews plugin now only creates a single output instead of recreating a new output on each hover, so the result is no lag spikes and speedier tooltip popups.

by soreau, Thursday, 26 February 2026, 06:22:54 (1772086974), pushed by soreau, Thursday, 26 February 2026, 06:23:23 (1772087003)

Author identity: Scott Moreau <oreaus@gmail.com>

167100e18a77d9bb4e4f8456cb3bb00fe405adcf

applets/wf-window-list/__init__.py

@@ -269,7 +269,6 @@ class WindowButton(Gtk.ToggleButton):

                                
                                
                                
                            
                                
                                    
                                        
                                            
                                                        return
                                        
                                        
                                            
                                            
                                            
                                            
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        
                                            
                                                    message = self.window_list.get_msg_template("live_previews/release_output")
                                        
                                        
                                            
                                            
                                            
                                            
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        
                                            
                                                    self.wf_sock.send_json(message)
                                        
                                        
                                            
                                            
                                            
                                            
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        
                                                self.window_list.set_live_preview_output(None)
                                        
                                        
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        
                                            
                                            
                                        
                                        
                                            
                                            
                                            
                                            
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        
                                            
                                                def show_menu(self, gesture, n_presses, x, y):
                                        
                                        
                                            
                                            
                                            
                                            
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        
                                            
                                                    if self.window_list.live_preview_tooltips:
                                        
                                        
                                            
                                            
                                            
                                            
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        

@@ -607,7 +606,6 @@ class WFWindowList(panorama_panel.Applet):

                                
                                
                                
                            
                                
                                    
                                        
                                            
                                                    return self.output
                                        
                                        
                                            
                                            
                                            
                                            
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        
                                            
                                            
                                        
                                        
                                            
                                            
                                            
                                            
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        
                                            
                                                def wl_output_enter(self, output, name):
                                        
                                        
                                            
                                            
                                            
                                            
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        
                                                self.set_live_preview_output(None)
                                        
                                        
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        
                                            
                                                    if name.startswith("live-preview"):
                                        
                                        
                                            
                                            
                                            
                                            
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        
                                            
                                                        self.set_live_preview_output(output)
                                        
                                        
                                            
                                            
                                            
                                            
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        
                                            
                                                        return
                                        
                                        
                                            
                                            
                                            
                                            
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        
                                        
                                            
                                            
                                            
                                            
                                        
                                    
                                
                                
                                
                            
                            
                                

main.py

@@ -777,6 +777,7 @@ class PanoramaPanel(Gtk.Application):

                                
                                
                                
                            
                                
                                    
                                        
                                            
                                                    self.applets_window = None
                                        
                                        
                                            
                                            
                                            
                                            
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        
                                            
                                                    self.edit_mode = False
                                        
                                        
                                            
                                            
                                            
                                            
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        
                                            
                                                    self.output_proxies = []
                                        
                                        
                                            
                                            
                                            
                                            
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        
                                                self.live_preview_output = None
                                        
                                        
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        
                                            
                                                    self.drags = {}
                                        
                                        
                                            
                                            
                                            
                                            
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        
                                            
                                                    self.wl_output_ids = set()
                                        
                                        
                                            
                                            
                                            
                                            
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        
                                            
                                                    self.started = False
                                        
                                        
                                            
                                            
                                            
                                            
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        

@@ -905,6 +906,8 @@ class PanoramaPanel(Gtk.Application):

                                
                                
                                
                            
                                
                                    
                                        
                                            
                                                            self.foreign_toplevel_manager.dispatcher["toplevel"] = self.on_new_toplevel
                                        
                                        
                                            
                                            
                                            
                                            
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        
                                            
                                                            self.foreign_toplevel_manager.dispatcher["finished"] = self.on_foreign_toplevel_manager_finish
                                        
                                        
                                            
                                            
                                            
                                            
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        
                                            
                                                            self.wl_display.roundtrip()
                                        
                                        
                                            
                                            
                                            
                                            
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        
                                                    else:
                                        
                                        
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        
                                                        self.live_preview_output = output
                                        
                                        
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        
                                            
                                                        print(f"Monitor {output.name} ({interface}) connected", file=sys.stderr)
                                        
                                        
                                            
                                            
                                            
                                            
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        
                                            
                                                    elif interface == "wl_seat":
                                        
                                        
                                            
                                            
                                            
                                            
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        
                                            
                                                        self.wl_seat = registry.bind(name, WlSeat, version)
                                        
                                        
                                            
                                            
                                            
                                            
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        

@@ -988,6 +991,7 @@ class PanoramaPanel(Gtk.Application):

                                
                                
                                
                            
                                
                                    
                                        
                                            
                                                            panel.present()
                                        
                                        
                                            
                                            
                                            
                                            
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        
                                            
                                                            panel.realize()
                                        
                                        
                                            
                                            
                                            
                                            
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        
                                            
                                                            panel.monitor_name = my_monitor.get_connector()
                                        
                                        
                                            
                                            
                                            
                                            
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        
                                                        panel.wl_output_enter(self.live_preview_output, self.live_preview_output.name)
                                        
                                        
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        
                                            
                                            
                                        
                                        
                                            
                                            
                                            
                                            
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        
                                            
                                                def do_startup(self):
                                        
                                        
                                            
                                            
                                            
                                            
                                        
                                    
                                
                                
                                
                            
                                
                                    
                                        
                                            
                                                    Gtk.Application.do_startup(self)