feat: auto-convert pixels to percentage on Todo Mode unit change

Author: tomdaly

Rectangle/PrefsWindow/SettingsViewController.swift

@@ -152,9 +152,13 @@ class SettingsViewController: NSViewController {
             Logger.log("Expected a pop up button to have a selected item with a valid tag matching a value of TodoSidebarWidthUnit. Got: \(String(describing: tag))")
             return
         }
-
         Defaults.todoSidebarWidthUnit.value = unit
 
+        let toPixels = (unit == .pixels)
+        let newValue = TodoManager.convertWidth(Defaults.todoSidebarWidth.value, toPixels: toPixels)
+        Defaults.todoSidebarWidth.value = newValue
+        todoAppWidthField.stringValue = String(newValue)
+
         TodoManager.moveAllIfNeeded(false)
     }
 

Rectangle/TodoMode/TodoManager.swift

@@ -246,6 +246,17 @@ class TodoManager {
         }
     }
 
+    static func convertWidth(_ value: Float, toPixels: Bool) -> Float {
+        TodoManager.refreshTodoScreen()
+        guard let screenWidth = TodoManager.todoScreen?.frame.width else { return value }
+
+        if toPixels {
+            return ((value * 0.01) * Float(screenWidth)).rounded()
+        } else {
+            return ((value / Float(screenWidth)) * 100).rounded()
+        }
+    }
+
     static func execute(parameters: ExecutionParameters) -> Bool {
         if [.leftTodo, .rightTodo].contains(parameters.action) {
             moveAll()