Photoshop: Auto align-crop without image edge losses

When rotate canvas causes a loss of image during a 'straighten' (after using ruler tool to get angle), I must go back in history to undo crop, then add white space and fill-in black areas....

Suggestion: have an option for white background images (such as text on a page or music that has lines that should be horizontal) that auto correct to NOT lose image from auto-crop and does not make any black or transparent areas (also auto-fill to same color as edge/background).

Option may call for setting some characteristics such as background color.