A compressor has a swash plate and shoes. Surfaces of the swash plate slides on flat surfaces of the shoes. A sliding film is formed on each of the swash plate surfaces. The sliding films are formed of a polyamide-imide resin that contains at least solid lubricant. The polyamide-amide resin has a tensile strength at room temperature of 200 MPa. The isocyanate component, which is a crude material of the polyamide-imide resin, contains 5 % to 90 % by mol of 3,3'-dimethylbiphenyl-4,4'-diisocyanate. The number average molecular weight of the polyamide-imide resin is no less than 20,000. When a base portion of the swash plate is made of an aluminum-based metal, the sliding films are formed on the base portion with middle layers made of anodized aluminium in between.