turbo-vision 0.9.0

A Rust implementation of the classic Borland Turbo Vision text-mode UI framework
Documentation 
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// (C) 2025 - Enzo Lombardi

//! Background view - solid color background fill for containers.

use crate::core::geometry::Rect;
use crate::core::event::Event;
use crate::core::draw::DrawBuffer;
use crate::core::palette::Attr;
use crate::terminal::Terminal;
use super::view::{View, write_line_to_terminal};

/// Background view - fills its bounds with a pattern character
/// Matches Borland's TBackground (tbackgro.cc)
pub struct Background {
    bounds: Rect,
    pattern: char,
    attr: Attr,
}

impl Background {
    pub fn new(bounds: Rect, pattern: char, attr: Attr) -> Self {
        Self {
            bounds,
            pattern,
            attr,
        }
    }
}

impl View for Background {
    fn bounds(&self) -> Rect {
        self.bounds
    }

    fn set_bounds(&mut self, bounds: Rect) {
        self.bounds = bounds;
    }

    fn draw(&mut self, terminal: &mut Terminal) {
        let width = self.bounds.width() as usize;
        let mut buf = DrawBuffer::new(width);
        buf.move_char(0, self.pattern, self.attr, width);

        // Draw every row
        for y in self.bounds.a.y..self.bounds.b.y {
            write_line_to_terminal(terminal, self.bounds.a.x, y, &buf);
        }
    }

    fn handle_event(&mut self, _event: &mut Event) {
        // Background doesn't handle events
    }
}