feat(glfw): add window size function

1 files changed, 22 insertions, 0 deletions

diff --git a/glfw/src/window.rs b/glfw/src/window.rs
index 6f5c845..e3e6383 100644
--- a/glfw/src/window.rs
+++ b/glfw/src/window.rs
@@ -118,6 +118,28 @@ impl Window
 
         should_close == crate::ffi::GLFW_TRUE
     }
+
+    /// Retrieves the size of the window.
+    ///
+    /// # Errors
+    /// Will return `Err` if a GLFW platform error occurs.
+    pub fn size(&self) -> Result<Size, Error>
+    {
+        let mut width = 0;
+        let mut height = 0;
+
+        // SAFETY: The initialize function (called when the window is created) makes sure
+        // the current thread is the main thread
+        unsafe { crate::ffi::glfwGetWindowSize(self.handle, &mut width, &mut height) };
+
+        get_glfw_error()?;
+
+        #[allow(clippy::cast_sign_loss)]
+        Ok(Size {
+            width: width as u32,
+            height: height as u32,
+        })
+    }
 }
 
 /// Window size.