macos: render a terminal in the slide window

macos/Ghostty.xcodeproj/project.pbxproj

@@ -65,6 +65,7 @@
 		A5CBD05C2CA0C5C70017A1AE /* SlideTerminal.xib in Resources */ = {isa = PBXBuildFile; fileRef = A5CBD05B2CA0C5C70017A1AE /* SlideTerminal.xib */; };
 		A5CBD05E2CA0C5EC0017A1AE /* SlideTerminalController.swift in Sources */ = {isa = PBXBuildFile; fileRef = A5CBD05D2CA0C5E70017A1AE /* SlideTerminalController.swift */; };
 		A5CBD0602CA0C90A0017A1AE /* SlideTerminalWindow.swift in Sources */ = {isa = PBXBuildFile; fileRef = A5CBD05F2CA0C9080017A1AE /* SlideTerminalWindow.swift */; };
+		A5CBD0642CA122E70017A1AE /* SlideTerminalPosition.swift in Sources */ = {isa = PBXBuildFile; fileRef = A5CBD0632CA122E70017A1AE /* SlideTerminalPosition.swift */; };
 		A5CC36132C9CD72D004D6760 /* SecureInputOverlay.swift in Sources */ = {isa = PBXBuildFile; fileRef = A5CC36122C9CD729004D6760 /* SecureInputOverlay.swift */; };
 		A5CC36152C9CDA06004D6760 /* View+Extension.swift in Sources */ = {isa = PBXBuildFile; fileRef = A5CC36142C9CDA03004D6760 /* View+Extension.swift */; };
 		A5CDF1912AAF9A5800513312 /* ConfigurationErrors.xib in Resources */ = {isa = PBXBuildFile; fileRef = A5CDF1902AAF9A5800513312 /* ConfigurationErrors.xib */; };
@@ -139,6 +140,7 @@
 		A5CBD05B2CA0C5C70017A1AE /* SlideTerminal.xib */ = {isa = PBXFileReference; lastKnownFileType = file.xib; path = SlideTerminal.xib; sourceTree = "<group>"; };
 		A5CBD05D2CA0C5E70017A1AE /* SlideTerminalController.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SlideTerminalController.swift; sourceTree = "<group>"; };
 		A5CBD05F2CA0C9080017A1AE /* SlideTerminalWindow.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SlideTerminalWindow.swift; sourceTree = "<group>"; };
+		A5CBD0632CA122E70017A1AE /* SlideTerminalPosition.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SlideTerminalPosition.swift; sourceTree = "<group>"; };
 		A5CC36122C9CD729004D6760 /* SecureInputOverlay.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SecureInputOverlay.swift; sourceTree = "<group>"; };
 		A5CC36142C9CDA03004D6760 /* View+Extension.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "View+Extension.swift"; sourceTree = "<group>"; };
 		A5CDF1902AAF9A5800513312 /* ConfigurationErrors.xib */ = {isa = PBXFileReference; lastKnownFileType = file.xib; path = ConfigurationErrors.xib; sourceTree = "<group>"; };
@@ -393,6 +395,7 @@
 			children = (
 				A5CBD05B2CA0C5C70017A1AE /* SlideTerminal.xib */,
 				A5CBD05D2CA0C5E70017A1AE /* SlideTerminalController.swift */,
+				A5CBD0632CA122E70017A1AE /* SlideTerminalPosition.swift */,
 				A5CBD05F2CA0C9080017A1AE /* SlideTerminalWindow.swift */,
 			);
 			path = SlideTerminal;
@@ -548,6 +551,7 @@
 				A5D0AF3D2B37804400D21823 /* CodableBridge.swift in Sources */,
 				A5D0AF3B2B36A1DE00D21823 /* TerminalRestorable.swift in Sources */,
 				C1F26EA72B738B9900404083 /* NSView+Extension.swift in Sources */,
+				A5CBD0642CA122E70017A1AE /* SlideTerminalPosition.swift in Sources */,
 				A596309C2AEE1C9E00D64628 /* TerminalController.swift in Sources */,
 				A5CC36152C9CDA06004D6760 /* View+Extension.swift in Sources */,
 				A56D58892ACDE6CA00508D2C /* ServiceProvider.swift in Sources */,

macos/Sources/App/macOS/AppDelegate.swift

@@ -170,7 +170,7 @@ class AppDelegate: NSObject,
             //terminalManager.newWindow()
         }
 
-        foo = SlideTerminalController(window: nil)
+        foo = SlideTerminalController(ghostty, baseConfig: nil)
         foo?.showWindow(self)
     }
 

macos/Sources/Features/SlideTerminal/SlideTerminalController.swift

@@ -4,39 +4,77 @@ import SwiftUI
 import GhosttyKit
 
 /// Controller for the slide-style terminal.
-class SlideTerminalController: NSWindowController {
+class SlideTerminalController: NSWindowController, TerminalViewDelegate, TerminalViewModel {
     override var windowNibName: NSNib.Name? { "SlideTerminal" }
 
+    /// The app instance that this terminal view will represent.
+    let ghostty: Ghostty.App
+
+    /// The position fo the slide terminal.
+    let position: SlideTerminalPosition
+
+    /// The surface tree for this window.
+    @Published var surfaceTree: Ghostty.SplitNode? = nil
+
+    init(_ ghostty: Ghostty.App,
+         position: SlideTerminalPosition = .top,
+         baseConfig base: Ghostty.SurfaceConfiguration? = nil,
+         surfaceTree tree: Ghostty.SplitNode? = nil
+    ) {
+        self.ghostty = ghostty
+        self.position = position
+
+        super.init(window: nil)
+
+        // Initialize our initial surface.
+        guard let ghostty_app = ghostty.app else { preconditionFailure("app must be loaded") }
+        self.surfaceTree = tree ?? .leaf(.init(ghostty_app, baseConfig: base))
+    }
+
+    required init?(coder: NSCoder) {
+        fatalError("init(coder:) is not supported for this view")
+    }
+
+    // MARK: NSWindowController
+
     override func windowDidLoad() {
         guard let window = self.window else { return }
 
-        // Make the window full width
+        // The slide window is not restorable (yet!). "Yet" because in theory we can
-        let screenFrame = NSScreen.main?.frame ?? .zero
+        // make this restorable, but it isn't currently implemented.
-        window.setFrame(NSRect(
+        window.isRestorable = false
-            x: 0,
-            y: 0,
-            width: screenFrame.size.width,
-            height: window.frame.size.height
-        ), display: false)
 
-        slideWindowIn(window: window)
+        // Setup our content
+        window.contentView = NSHostingView(rootView: TerminalView(
+            ghostty: self.ghostty,
+            viewModel: self,
+            delegate: self
+        ))
+
+        // Animate the window in
+        slideWindowIn(window: window, from: position)
     }
 
-    private func slideWindowIn(window: NSWindow) {
+    //MARK: TerminalViewDelegate
+
+    func cellSizeDidChange(to: NSSize) {
+        guard ghostty.config.windowStepResize else { return }
+        self.window?.contentResizeIncrements = to
+    }
+
+    func surfaceTreeDidChange() {
+        if (surfaceTree == nil) {
+            self.window?.close()
+        }
+    }
+
+    // MARK: Slide Logic
+
+    private func slideWindowIn(window: NSWindow, from position: SlideTerminalPosition) {
         guard let screen = NSScreen.main else { return }
 
-        // Determine our final position. Our final position is exactly
-        // pinned against the top menu bar.
-        let windowFrame = window.frame
-        let finalY = screen.visibleFrame.maxY - windowFrame.height
-
         // Move our window off screen to the top
-        window.setFrameOrigin(.init(
+        position.setInitial(in: window, on: screen)
-            x: windowFrame.origin.x,
-            y: screen.frame.maxY))
-
-        // Set the window invisible
-        window.alphaValue = 0
 
         // Move it to the visible position since animation requires this
         window.makeKeyAndOrderFront(nil)
@@ -46,17 +84,7 @@ class SlideTerminalController: NSWindowController {
         NSAnimationContext.runAnimationGroup { context in
             context.duration = 0.3
             context.timingFunction = .init(name: .easeIn)
-
+            position.setFinal(in: window.animator(), on: screen)
-            let animator = window.animator()
-            animator.setFrame(.init(
-                origin: .init(x: windowFrame.origin.x, y: finalY),
-                size: windowFrame.size
-            ), display: true)
-            animator.alphaValue = 1
         }
     }
 }
-
-enum SlideTerminalLocation {
-    case top
-}

macos/Sources/Features/SlideTerminal/SlideTerminalPosition.swift

@@ -0,0 +1,41 @@
+import Cocoa
+
+enum SlideTerminalPosition {
+    case top
+
+    /// Set the initial state for a window for animating out of this position.
+    func setInitial(in window: NSWindow, on screen: NSScreen) {
+        // We always start invisible
+        window.alphaValue = 0
+
+        // Position depends
+        switch (self) {
+        case .top:
+            window.setFrame(.init(
+                origin: .init(
+                    x: 0,
+                    y: screen.frame.maxY),
+                size: .init(
+                    width: screen.frame.width,
+                    height: window.frame.height)
+            ), display: false)
+        }
+    }
+
+    /// Set the final state for a window in this position.
+    func setFinal(in window: NSWindow, on screen: NSScreen) {
+        // We always end visible
+        window.alphaValue = 1
+
+        // Position depends
+        switch (self) {
+        case .top:
+            window.setFrame(.init(
+                origin: .init(
+                    x: window.frame.origin.x,
+                    y: screen.visibleFrame.maxY - window.frame.height),
+                size: window.frame.size
+            ), display: true)
+        }
+    }
+}

macos/Sources/Features/SlideTerminal/SlideTerminalWindow.swift

@@ -23,9 +23,6 @@ class SlideTerminalWindow: NSWindow {
         // and lets us render off screen.
         self.level = .popUpMenu
 
-        self.isMovableByWindowBackground = true
-        self.isMovable = true
-
         self.collectionBehavior = [
             // We want this to be part of every space because it is a singleton.
             .canJoinAllSpaces,

macos/Sources/Features/Terminal/TerminalView.swift

@@ -18,6 +18,7 @@ protocol TerminalViewDelegate: AnyObject {
     /// not called initially.
     func surfaceTreeDidChange()
 
+    /// This is called when a split is zoomed.
     func zoomStateDidChange(to: Bool)
 }