Function mupdf_sys::fz_new_pixmap_from_pixmap

pub unsafe extern "C" fn fz_new_pixmap_from_pixmap(
    ctx: *mut fz_context, 
    pixmap: *mut fz_pixmap, 
    rect: *const fz_irect
) -> *mut fz_pixmap

Create a new pixmap that represents a subarea of the specified pixmap. A reference is taken to this pixmap that will be dropped on destruction.

The supplied rectangle must be wholly contained within the original pixmap.

Returns a pointer to the new pixmap. Throws exception on failure to allocate.