Initial public release of Warp.

Repo-Sync-Origin: warpdotdev/warp-internal@12af1d983b

crates/warpui/src/windowing/winit/windows/system_caption_buttons.rs

@@ -0,0 +1,42 @@
+use super::window_attribute::get_window_attribute;
+use super::WindowAttributeErr;
+use windows::Win32::Foundation::RECT;
+use windows::Win32::Graphics::Dwm;
+use winit::window::Window as WinitWindow;
+
+#[derive(Debug)]
+pub struct SystemCaptionButtonData {
+    bounds: RECT,
+}
+
+#[derive(Debug)]
+pub enum SystemCaptionButtonSide {
+    Left,
+    Right,
+}
+
+impl SystemCaptionButtonData {
+    pub fn total_width(&self) -> i32 {
+        self.bounds.right - self.bounds.left
+    }
+
+    pub fn side(&self) -> SystemCaptionButtonSide {
+        if self.bounds.left == 0 {
+            SystemCaptionButtonSide::Left
+        } else {
+            SystemCaptionButtonSide::Right
+        }
+    }
+}
+
+/// Retrieves the system caption button's bounds using the window's
+/// CAPTION_BUTTON_BOUNDS attribute.
+pub fn get_system_caption_button_bounds(
+    window: &WinitWindow,
+) -> Result<SystemCaptionButtonData, WindowAttributeErr> {
+    let caption_button_bounds = get_window_attribute(window, Dwm::DWMWA_CAPTION_BUTTON_BOUNDS)?;
+
+    Ok(SystemCaptionButtonData {
+        bounds: caption_button_bounds,
+    })
+}