rename slide to quick terminal

macos/Sources/Features/QuickTerminal/QuickTerminalWindow.swift

@@ -0,0 +1,39 @@
+import Cocoa
+
+class QuickTerminalWindow: NSWindow {
+    // Both of these must be true for windows without decorations to be able to
+    // still become key/main and receive events.
+    override var canBecomeKey: Bool { return true }
+    override var canBecomeMain: Bool { return true }
+    
+    override func awakeFromNib() {
+        super.awakeFromNib()
+
+        // Note: almost all of this stuff can be done in the nib/xib directly
+        // but I prefer to do it programmatically because the properties we
+        // care about are less hidden.
+
+        // Remove the title completely. This will make the window square. One
+        // downside is it also hides the cursor indications of resize but the
+        // window remains resizable.
+        self.styleMask.remove(.titled)
+
+        // We need to set our window level to a high value. In testing, only
+        // popUpMenu and above do what we want. This gets it above the menu bar
+        // and lets us render off screen.
+        self.level = .popUpMenu
+
+        // This plus the level above was what was needed for the animation to work,
+        // because it gets the window off screen properly. Plus we add some fields
+        // we just want the behavior of.
+        self.collectionBehavior = [
+            // We want this to be part of every space because it is a singleton.
+            .canJoinAllSpaces,
+
+            // We don't want to be part of command-tilde
+            .ignoresCycle,
+
+            // We never support fullscreen
+            .fullScreenNone]
+    }
+}