Trait DrawCallback 

pub trait DrawCallback: Sync + Send {
    // Required methods
    fn init(
        &mut self,
        width: usize,
        height: usize,
        option: Option<InitOptions>,
    ) -> Result<Option<CallbackResponse>, Box<dyn Error>>;
    fn draw(
        &mut self,
        start_x: usize,
        start_y: usize,
        width: usize,
        height: usize,
        data: &[u8],
        option: Option<DrawOptions>,
    ) -> Result<Option<CallbackResponse>, Box<dyn Error>>;
    fn terminate(
        &mut self,
        term: Option<TerminateOptions>,
    ) -> Result<Option<CallbackResponse>, Box<dyn Error>>;
    fn next(
        &mut self,
        next: Option<NextOptions>,
    ) -> Result<Option<CallbackResponse>, Box<dyn Error>>;
    fn verbose(
        &mut self,
        verbose: &str,
        option: Option<VerboseOptions>,
    ) -> Result<Option<CallbackResponse>, Box<dyn Error>>;
    fn set_metadata(
        &mut self,
        key: &str,
        value: DataMap,
    ) -> Result<Option<CallbackResponse>, Box<dyn Error>>;
}

Receives decoded image data from compatibility decode entry points.

Required Methods

fn init( &mut self, width: usize, height: usize, option: Option<InitOptions>, ) -> Result<Option<CallbackResponse>, Box<dyn Error>>

fn draw( &mut self, start_x: usize, start_y: usize, width: usize, height: usize, data: &[u8], option: Option<DrawOptions>, ) -> Result<Option<CallbackResponse>, Box<dyn Error>>

fn terminate( &mut self, term: Option<TerminateOptions>, ) -> Result<Option<CallbackResponse>, Box<dyn Error>>

fn next( &mut self, next: Option<NextOptions>, ) -> Result<Option<CallbackResponse>, Box<dyn Error>>

fn verbose( &mut self, verbose: &str, option: Option<VerboseOptions>, ) -> Result<Option<CallbackResponse>, Box<dyn Error>>

fn set_metadata( &mut self, key: &str, value: DataMap, ) -> Result<Option<CallbackResponse>, Box<dyn Error>>

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors