Now select the object and then click on the Gradient/Image Fill Edit Tool.

You will now have a selection box in the middle of the object.

With this box, you can rotate, move or resize the image fill by selecting on of 8 handles. The resize cursor looks like a double sided arrow, the rotate cursor looks like a circle with an arrow on the end of it, and the move cursor is a large plus sign. Click and drag to resize or rotate the image.

The same applies to the gradient filled objects as well.