From 1e5c17dffad25874210a1087387e119d91da1a2c Mon Sep 17 00:00:00 2001
From: Mitchell Hashimoto <mitchell.hashimoto@gmail.com>
Date: Fri, 28 Oct 2022 10:02:32 -0700
Subject: [PATCH] Comment to show native access

---
 pkg/objc/property.zig |  8 ++++++++
 src/Window.zig        | 47 +++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 55 insertions(+)

diff --git a/pkg/objc/property.zig b/pkg/objc/property.zig
index 110516b0e..9adcb3c20 100644
--- a/pkg/objc/property.zig
+++ b/pkg/objc/property.zig
@@ -9,6 +9,14 @@ pub const Property = extern struct {
     pub fn getName(self: Property) [:0]const u8 {
         return std.mem.sliceTo(c.property_getName(self.value), 0);
     }
+
+    /// Returns the value of a property attribute given the attribute name.
+    pub fn copyAttributeValue(self: Property, attr: [:0]const u8) ?[:0]u8 {
+        return std.mem.sliceTo(
+            c.property_copyAttributeValue(self.value, attr.ptr) orelse return null,
+            0,
+        );
+    }
 };
 
 test {
diff --git a/src/Window.zig b/src/Window.zig
index 6ec16425d..fa409771f 100644
--- a/src/Window.zig
+++ b/src/Window.zig
@@ -24,6 +24,11 @@ const Config = @import("config.zig").Config;
 const input = @import("input.zig");
 const DevMode = @import("DevMode.zig");
 
+// Get native API access on certain platforms so we can do more customization.
+const glfwNative = glfw.Native(.{
+    .cocoa = builtin.os.tag == .macos,
+});
+
 const log = std.log.scoped(.window);
 
 // The preallocation size for the write request pool. This should be big
@@ -173,6 +178,48 @@ pub fn create(alloc: Allocator, loop: libuv.Loop, config: *const Config) !*Windo
     errdefer window.destroy();
     try Renderer.windowInit(window);
 
+    // TEST
+    // if (builtin.os.tag == .macos) {
+    //     const id = glfwNative.getCocoaWindow(window) orelse unreachable;
+    //     const nswindow = objc.Object.fromId(id);
+    //     const NSWindow = nswindow.getClass().?;
+    //
+    //     {
+    //         const prop = NSWindow.getProperty("titlebarAppearsTransparent").?;
+    //         const setter = if (prop.copyAttributeValue("S")) |val| setter: {
+    //             defer objc.free(val);
+    //             break :setter objc.sel(val);
+    //         } else objc.sel("setTitlebarAppearsTransparent:");
+    //
+    //         nswindow.msgSend(void, setter, .{true});
+    //     }
+    //
+    //     {
+    //         const NSColor = objc.Class.getClass("NSColor").?;
+    //         const nscolor = NSColor.msgSend(
+    //             objc.Object,
+    //             objc.sel("colorWithSRGBRed:green:blue:alpha:"),
+    //             .{
+    //                 1.0,
+    //                 0.0,
+    //                 0.0,
+    //                 // @intToFloat(f32, config.background.r) / 255.0,
+    //                 // @intToFloat(f32, config.background.g) / 255.0,
+    //                 // @intToFloat(f32, config.background.b) / 255.0,
+    //                 1.0,
+    //             },
+    //         );
+    //
+    //         const prop = NSWindow.getProperty("backgroundColor").?;
+    //         const setter = if (prop.copyAttributeValue("S")) |val| setter: {
+    //             defer objc.free(val);
+    //             break :setter objc.sel(val);
+    //         } else objc.sel("setBackgroundColor:");
+    //
+    //         nswindow.msgSend(void, setter, .{nscolor});
+    //     }
+    // }
+
     // Determine our DPI configurations so we can properly configure
     // font points to pixels and handle other high-DPI scaling factors.
     const content_scale = try window.getContentScale();