Struct Screen 

pub struct Screen {
    pub rows: usize,
    pub columns: usize,
    pub cursor: usize,
    pub alarm: bool,
    pub keyboard_locked: bool,
    /* private fields */
}

Fields

rows: usize

columns: usize

cursor: usize

alarm: bool

keyboard_locked: bool

Implementations

impl Screen

pub fn new(rows: usize, columns: usize) -> Self

pub fn size(&self) -> usize

pub fn position(&self, address: usize) -> (usize, usize)

Row and column (both from 1) of a buffer address.

pub fn address(&self, row: usize, column: usize) -> usize

pub fn fields(&self) -> Vec<FieldView>

Every field, in buffer order; empty when the screen is unformatted.

pub fn field_at(&self, address: usize) -> Option<FieldView>

The field a buffer address falls in.

pub fn field_data(&self, field: &FieldView) -> Vec<u8>

pub fn apply(&mut self, stream: &[u8]) -> Result<(), String>

Applies an outbound data stream: a command, its WCC, then orders and data.

pub fn type_at(&mut self, address: usize, text: &[u8]) -> Result<(), String>

The operator typing text (EBCDIC) at an address: it must be in an unprotected field, and it sets the field’s modified bit. Typing stops at the end of the field.

pub fn erase_eof(&mut self, address: usize) -> Result<(), String>

ERASE EOF: clears the rest of the field at an address and sets its modified bit.

pub fn read_modified(&self, aid: u8) -> Vec<u8>

The inbound stream an AID key sends: Read Modified, or the short read of CLEAR and the PA keys (the AID alone). Nulls in a field’s data are not sent.

pub fn render(&self, page: &CodePage) -> String

The screen as text: attribute positions and nulls as spaces, non-display fields blank.

Trait Implementations

impl Clone for Screen

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Screen

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for Screen

impl PartialEq for Screen

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Screen