cli: add randr subcommand

src/utils/gfx_api_ext.rs

@@ -0,0 +1,25 @@
+use jay_config::video::GfxApi;
+
+pub trait GfxApiExt: Sized {
+    fn to_str(&self) -> &'static str;
+
+    fn from_str_lossy(s: &str) -> Option<Self>;
+}
+
+impl GfxApiExt for GfxApi {
+    fn to_str(&self) -> &'static str {
+        match self {
+            GfxApi::OpenGl => "OpenGl",
+            GfxApi::Vulkan => "Vulkan",
+            _ => "unknown",
+        }
+    }
+
+    fn from_str_lossy(s: &str) -> Option<Self> {
+        match &*s.to_ascii_lowercase() {
+            "opengl" => Some(Self::OpenGl),
+            "vulkan" => Some(Self::Vulkan),
+            _ => None,
+        }
+    }
+}