Hollywood Actor Johnny Depp is still struggling with his estranged wife Amber Heard in court. And according to new reports, Amber is claiming Johhny accidentally cut his fingertip in a fit of rage. TMZ reports below..Johnny Depp accidentally cut off his fingertip in a fit of rage ... then dipped the stump in dark blue paint and wrote on the wall in paint and blood the name "Billy Bob" -- the actor with whom Johnny accused Amber Heard of cheating -- this according to Amber and her people." The photo after the cut is a little graphicTMZ has obtained this gruesome photo of Johnny's butchered finger -- It's an exhibit in her domestic violence case against Johnny.We're told the incident went down in March of last year, just a month after Amber and Johnny married. They were in avilla in Australia when a fierce argument erupted.According to Amber's version of events Johnny, who was drunk and high on ecstasy, smashed several bottles and windows and also slammed a plastic phone against the wall unit. She claims a piece of one of the items cut off a portion of his forefinger.Amber's version goes on ... she's a painter and had dark blue paint in the room. She claims Johnny dipped what remained of his forefinger in the paint and then used the gnarly digit to write various words on the wall, including "Billy Bob" and "Easy Amber."Amber had done a movie withBilly Bob Thorntonand she claims Johnny accused the 2 of sleeping together -- something she strongly denied, adding he accused her of infidelity with other men as well.Amber's people say Johnny didn't get medical help for nearly 24 hours, so doctors could not reattach the fingertip ... they used a flap from his hand to sew on a new tip.