virtual-output: add support for virtual outputs

src/control_center/cc_sidebar.rs

@@ -18,6 +18,7 @@ enum PaneName {
     LookAndFeel,
     Clients,
     WindowSearch,
+    VirtualOutputs,
 }
 
 impl PaneName {
@@ -33,6 +34,7 @@ impl PaneName {
             PaneName::LookAndFeel => "Look and Feel",
             PaneName::Clients => "Clients",
             PaneName::WindowSearch => "Window Search",
+            PaneName::VirtualOutputs => "Virtual Outputs",
         }
     }
 }
@@ -79,6 +81,9 @@ impl ControlCenterInner {
                                 PaneName::WindowSearch => {
                                     PaneType::WindowSearch(self.create_window_search_pane())
                                 }
+                                PaneName::VirtualOutputs => {
+                                    PaneType::VirtualOutputs(self.create_virtual_outputs_pane())
+                                }
                             };
                             self.open(tree, ty);
                             ui.ctx().request_repaint();

src/control_center/cc_virtual_outputs.rs

@@ -0,0 +1,49 @@
+use {
+    crate::{
+        control_center::ControlCenterInner, egui_adapter::egui_platform::icons::ICON_CLOSE,
+        state::State,
+    },
+    egui::Ui,
+    std::rc::Rc,
+};
+
+pub struct VirtualOutputsPane {
+    state: Rc<State>,
+    new: String,
+}
+
+impl ControlCenterInner {
+    pub fn create_virtual_outputs_pane(self: &Rc<Self>) -> VirtualOutputsPane {
+        VirtualOutputsPane {
+            state: self.state.clone(),
+            new: Default::default(),
+        }
+    }
+}
+
+impl VirtualOutputsPane {
+    pub fn title(&self, res: &mut String) {
+        res.push_str("Virtual Outputs");
+    }
+
+    pub fn show(&mut self, ui: &mut Ui) {
+        let s = &self.state;
+        let mut outputs: Vec<_> = s.virtual_outputs.outputs.lock().keys().cloned().collect();
+        outputs.sort();
+        for o in &outputs {
+            ui.horizontal(|ui| {
+                if ui.button(ICON_CLOSE).clicked() {
+                    s.virtual_outputs.remove_output(s, o);
+                }
+                ui.label(o);
+            });
+        }
+        ui.horizontal(|ui| {
+            ui.text_edit_singleline(&mut self.new);
+            if ui.button("Add").clicked() {
+                s.virtual_outputs.get_or_create(s, &self.new);
+                ui.ctx().request_repaint();
+            }
+        });
+    }
+}