[wip] gpui hello world

Cargo.toml

@@ -6,3 +6,4 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+gpui = { git = "https://github.com/zed-industries/zed" }

flake.nix

@@ -24,9 +24,29 @@
         ];
 
         buildInputs = [
+          curl
+          fontconfig
+          freetype
+          libgit2
+          openssl
+          sqlite
+          zlib
+          zstd
+          vulkan-loader
+        ] ++ lib.optionals stdenv.isLinux [
+          alsa-lib
+          libxkbcommon
+          wayland
+          xorg.libxcb
         ];
       };
 
+    env = {
+      LD_LIBRARY_PATH = with pkgs; lib.makeLibraryPath [
+        vulkan-loader
+      ];
+    };
+
     formatter.x86_64-linux = nixpkgs.legacyPackages.x86_64-linux.nixfmt;
   };
 }

src/main.rs

@@ -1,3 +1,39 @@
-fn main() {
-    println!("Hello, world!");
+use gpui::*;
+
+struct HelloWorld {
+    text: SharedString,
+}
+
+impl Render for HelloWorld {
+    fn render(&mut self, _cx: &mut ViewContext<Self>) -> impl IntoElement {
+        div()
+            .flex()
+            .bg(rgb(0x2e7d32))
+            .size(Length::Definite(Pixels(300.0).into()))
+            .justify_center()
+            .items_center()
+            .shadow_lg()
+            .border()
+            .border_color(rgb(0x0000ff))
+            .text_xl()
+            .text_color(rgb(0xffffff))
+            .child(format!("Hello, {}!", &self.text))
+    }
+}
+
+fn main() {
+    App::new().run(|cx: &mut AppContext| {
+        let bounds = Bounds::centered(None, size(px(600.0), px(600.0)), cx);
+        cx.open_window(
+            WindowOptions {
+                bounds: Some(bounds),
+                ..Default::default()
+            },
+            |cx| {
+                cx.new_view(|_cx| HelloWorld {
+                    text: "World".into(),
+                })
+            },
+        );
+    });
 }