Struct Dummy

pub struct Dummy;

Dummy backend that does nothing and immediately exits.

Mostly used for testing.

Implementations

impl Dummy

pub fn init() -> Box<dyn Backend>

where Dummy: Sized,

Creates a new dummy backend.

Trait Implementations

impl Backend for Dummy

fn name(&self) -> &str

Returns a name to identify the backend.

fn set_title(&mut self, _title: String)

Sets the title for the backend.

fn refresh(&mut self)

Refresh the screen.

fn has_colors(&self) -> bool

Should return true if this backend supports colors.

fn screen_size(&self) -> XY<usize>

Returns the screen size.

fn poll_event(&mut self) -> Option<Event>

Polls the backend for any input.

fn move_to(&self, _: XY<usize>)

Move the cursor to the given cell.

fn print(&self, _: &str)

Print some text at the current cursor.

fn clear(&self, _: Color)

Clears the screen with the given color.

fn set_color(&self, colors: ColorPair) -> ColorPair

Starts using a new color.

fn set_effect(&self, _: Effect)

Enables the given effect.

fn unset_effect(&self, _: Effect)

Disables the given effect.

fn is_persistent(&self) -> bool

Returns true if the backend has persistent output.