Merge pull request #227 from aepsil0n/grab-cursor

Implement grabbing of the mouse pointer for X11

src/window.rs

@@ -414,6 +414,22 @@ impl Window {
     pub fn set_cursor_position(&self, x: i32, y: i32) -> Result<(), ()> {
         self.window.set_cursor_position(x, y)
     }
+
+    /// Grabs the mouse cursor. The cursor's motion will be confined to this
+    /// window and the window has exclusive access to further events regarding
+    /// the cursor.
+    /// Fails if it is not possible to grab the window for some reason, e.g.
+    /// when another window has already done so.
+    /// Has no effect on Android.
+    pub fn grab_cursor(&self) -> Result<(), String> {
+        self.window.grab_cursor()
+    }
+
+    /// Release a previously grabbed mouse cursor.
+    pub fn ungrab_cursor(&self) {
+        self.window.ungrab_cursor();
+    }
+
 }
 
 impl gl_common::GlFunctionsSource for Window {