| 摘要 |
An image display apparatus and a method for operating the same are disclosed. The method for operating an image display apparatus includes setting a position and size of a first undo/redo region based on a gaze of a user if the gaze of the user is to a first position, displaying the set first undo/redo region, extending the first undo/redo region based on movement of the gaze of the user if the gaze of the user is moved from the first position to a second position, displaying a second undo/redo region obtained by extending the first undo/redo region, reducing the size of the second undo/redo region if a time when the gaze of the user is to the second position exceeds a predetermined time, and displaying a third undo/redo region obtained by reducing the second undo/redo region. |
