Reimplement cursor functions

src/control/mod.rs

@@ -387,6 +387,50 @@ pub trait Device: super::Device {
         let _info = drm_ffi::gem::close(self.as_raw_fd(), handle.0.get())?;
         Ok(())
     }
+
+    /// Sets a hardware-cursor on the given crtc with the image of a given buffer
+    /// 
+    /// A buffer argument of `None` will clear the cursor.
+    fn set_cursor<B>(&self, crtc: crtc::Handle, buffer: Option<&B>) -> Result<(), SystemError>
+    where
+        B: buffer::Buffer + 'static, 
+    {
+        let (id, w, h) = buffer
+            .map(|buf| {
+                let (w, h) = buf.size();
+                (buf.handle().0.get(), w, h)
+            })
+            .unwrap_or((0, 0, 0));
+        drm_ffi::mode::set_cursor(self.as_raw_fd(), crtc.as_ref().get(), id, w, h)?;
+
+        Ok(())
+    }
+
+    /// Sets a hardware-cursor on the given crtc with the image of a given buffer
+    /// and a hotspot marking the click point of the cursor.
+    /// 
+    /// A buffer argument of `None` will clear the cursor.
+    fn set_cursor2<B>(&self, crtc: crtc::Handle, buffer: Option<&B>, hotspot: (i32, i32)) -> Result<(), SystemError>
+    where
+        B: buffer::Buffer + 'static, 
+    {
+        let (id, w, h) = buffer
+            .map(|buf| {
+                let (w, h) = buf.size();
+                (buf.handle().0.get(), w, h)
+            })
+            .unwrap_or((0, 0, 0));
+        drm_ffi::mode::set_cursor2(self.as_raw_fd(), crtc.as_ref().get(), id, w, h, hotspot.0, hotspot.1)?;
+
+        Ok(())
+    }
+
+    /// Moves a set cursor on a given crtc
+    fn move_cursor(&self, crtc: crtc::Handle, pos: (i32, i32)) -> Result<(), SystemError> {
+        drm_ffi::mode::move_cursor(self.as_raw_fd(), crtc.as_ref().get(), pos.0, pos.1)?;
+
+        Ok(())
+    }
 }
 
 /// The set of [ResourceHandles](ResourceHandle.t.html) that a