From d18e1c879bcc68a4c4db68f4cebaa16193b26bdd Mon Sep 17 00:00:00 2001
From: Mitchell Hashimoto <m@mitchellh.com>
Date: Sun, 22 Sep 2024 21:35:07 -0700
Subject: [PATCH] macos: restrict resizing based on sliding terminal position

---
 .../SlideTerminal/SlideTerminalController.swift       |  7 ++++++-
 .../SlideTerminal/SlideTerminalPosition.swift         | 11 +++++++++++
 2 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/macos/Sources/Features/SlideTerminal/SlideTerminalController.swift b/macos/Sources/Features/SlideTerminal/SlideTerminalController.swift
index c117ae0f1..12f785843 100644
--- a/macos/Sources/Features/SlideTerminal/SlideTerminalController.swift
+++ b/macos/Sources/Features/SlideTerminal/SlideTerminalController.swift
@@ -10,7 +10,7 @@ class SlideTerminalController: NSWindowController, NSWindowDelegate, TerminalVie
     /// The app instance that this terminal view will represent.
     let ghostty: Ghostty.App
 
-    /// The position fo the slide terminal.
+    /// The position for the slide terminal.
     let position: SlideTerminalPosition
 
     /// The surface tree for this window.
@@ -65,6 +65,11 @@ class SlideTerminalController: NSWindowController, NSWindowDelegate, TerminalVie
         slideOut()
     }
 
+    func windowWillResize(_ sender: NSWindow, to frameSize: NSSize) -> NSSize {
+        guard let screen = NSScreen.main else { return frameSize }
+        return position.restrictFrameSize(frameSize, on: screen)
+    }
+
     //MARK: TerminalViewDelegate
 
     func cellSizeDidChange(to: NSSize) {
diff --git a/macos/Sources/Features/SlideTerminal/SlideTerminalPosition.swift b/macos/Sources/Features/SlideTerminal/SlideTerminalPosition.swift
index 3ef7d7dcc..72f8d9483 100644
--- a/macos/Sources/Features/SlideTerminal/SlideTerminalPosition.swift
+++ b/macos/Sources/Features/SlideTerminal/SlideTerminalPosition.swift
@@ -35,6 +35,17 @@ enum SlideTerminalPosition {
         }
     }
 
+    /// Restrict the frame size during resizing.
+    func restrictFrameSize(_ size: NSSize, on screen: NSScreen) -> NSSize {
+        var finalSize = size
+        switch (self) {
+        case .top:
+            finalSize.width = screen.frame.width
+        }
+
+        return finalSize
+    }
+
     /// The initial point origin for this position.
     func initialOrigin(for window: NSWindow, on screen: NSScreen) -> CGPoint {
         switch (self) {