Trait ascii_canvas::AsciiView

pub trait AsciiView {
    fn columns(&self) -> usize;
    fn read_char(&mut self, row: usize, column: usize) -> char;
    fn write_char(&mut self, row: usize, column: usize, ch: char, style: Style);
}

AsciiView is a view onto an AsciiCanvas which potentially applies transformations along the way (e.g., shifting, adding styling information). Most of the main drawing methods for AsciiCanvas are defined as inherent methods on an AsciiView trait object.

Required Methods

fn columns(&self) -> usize

fn read_char(&mut self, row: usize, column: usize) -> char

fn write_char(&mut self, row: usize, column: usize, ch: char, style: Style)

Methods

impl<'a> AsciiView + 'a

fn draw_vertical_line(&mut self, rows: Range<usize>, column: usize)

Draws a line for the given range of rows at the given column.

fn draw_horizontal_line(&mut self, row: usize, columns: Range<usize>)

Draws a horizontal line along a given row for the given range of columns.

fn write_chars<I>(&mut self, row: usize, column: usize, chars: I, style: Style) where
    I: Iterator<Item = char>, 

Writes characters in the given style at the given position.

fn shift<'c>(&'c mut self, row: usize, column: usize) -> ShiftedView<'c>

Creates a new view onto the same canvas, but writing at an offset.

fn styled<'c>(&'c mut self, style: Style) -> StyleView<'c>

Creates a new view onto the same canvas, but applying a style to all the characters written.

Implementors

• impl AsciiView for AsciiCanvas
• impl<'canvas> AsciiView for ShiftedView<'canvas>
• impl<'canvas> AsciiView for StyleView<'canvas>