Draws a framed rectangle on the current context using the specified coordinates and colors.
The coordinates specify the interior box. The border extends outside of the box using the given width.
| x1 |
the left X coordinate |
| y1 |
the top Y coordinate |
| x2 |
the right X coordinate |
| y2 |
the bottom Y coordinate |
| width |
the width of the frame |
| c |
the colors |